Adding upstream version 2:9.1.0016.upstream/2%9.1.0016

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 7375 insertions, 0 deletions

diff --git a/src/gui_gtk_x11.c b/src/gui_gtk_x11.c
new file mode 100644
index 0000000..87838b9
--- /dev/null
+++ b/src/gui_gtk_x11.c
@@ -0,0 +1,7375 @@
+/* vi:set ts=8 sts=4 sw=4 noet:
+ *
+ * VIM - Vi IMproved		by Bram Moolenaar
+ *
+ * Do ":help uganda"  in Vim to read copying and usage conditions.
+ * Do ":help credits" in Vim to see a list of people who contributed.
+ * See README.txt for an overview of the Vim source code.
+ */
+
+/*
+ * Porting to GTK+ was done by:
+ *
+ * (C) 1998,1999,2000 by Marcin Dalecki <martin@dalecki.de>
+ *
+ * With GREAT support and continuous encouragements by Andy Kahn and of
+ * course Bram Moolenaar!
+ *
+ * Support for GTK+ 2 was added by:
+ *
+ * (C) 2002,2003  Jason Hildebrand  <jason@peaceworks.ca>
+ *		  Daniel Elstner  <daniel.elstner@gmx.net>
+ *
+ * Support for GTK+ 3 was added by:
+ *
+ * 2016  Kazunobu Kuriyama  <kazunobu.kuriyama@gmail.com>
+ */
+
+#include "vim.h"
+#ifdef USE_GRESOURCE
+#include "auto/gui_gtk_gresources.h"
+#endif
+
+#ifdef FEAT_GUI_GNOME
+// Gnome redefines _() and N_().  Grrr...
+# ifdef _
+#  undef _
+# endif
+# ifdef N_
+#  undef N_
+# endif
+# ifdef textdomain
+#  undef textdomain
+# endif
+# ifdef bindtextdomain
+#  undef bindtextdomain
+# endif
+# ifdef bind_textdomain_codeset
+#  undef bind_textdomain_codeset
+# endif
+# if defined(FEAT_GETTEXT) && !defined(ENABLE_NLS)
+#  define ENABLE_NLS	// so the texts in the dialog boxes are translated
+# endif
+# include <gnome.h>
+# include "version.h"
+// missing prototype in bonobo-dock-item.h
+extern void bonobo_dock_item_set_behavior(BonoboDockItem *dock_item, BonoboDockItemBehavior beh);
+#endif
+
+#if !defined(FEAT_GUI_GTK) && defined(PROTO)
+// When generating prototypes we don't want syntax errors.
+# define GdkAtom int
+# define GdkEventExpose int
+# define GdkEventFocus int
+# define GdkEventVisibility int
+# define GdkEventProperty int
+# define GtkContainer int
+# define GtkTargetEntry int
+# define GtkType int
+# define GtkWidget int
+# define gint int
+# define gpointer int
+# define guint int
+# define GdkEventKey int
+# define GdkEventSelection int
+# define GtkSelectionData int
+# define GdkEventMotion int
+# define GdkEventButton int
+# define GdkDragContext int
+# define GdkEventConfigure int
+# define GdkEventClient int
+#else
+# if GTK_CHECK_VERSION(3,0,0)
+#  include <gdk/gdkkeysyms-compat.h>
+#  include <gtk/gtkx.h>
+# else
+#  include <gdk/gdkkeysyms.h>
+# endif
+# include <gdk/gdk.h>
+# ifdef MSWIN
+#  include <gdk/gdkwin32.h>
+# else
+#  include <gdk/gdkx.h>
+# endif
+# include <gtk/gtk.h>
+# include "gui_gtk_f.h"
+#endif
+
+#ifdef HAVE_X11_SUNKEYSYM_H
+# include <X11/Sunkeysym.h>
+#endif
+
+/*
+ * Easy-to-use macro for multihead support.
+ */
+#define GET_X_ATOM(atom)	gdk_x11_atom_to_xatom_for_display( \
+				    gtk_widget_get_display(gui.mainwin), atom)
+
+// Selection type distinguishers
+enum
+{
+    TARGET_TYPE_NONE,
+    TARGET_UTF8_STRING,
+    TARGET_STRING,
+    TARGET_COMPOUND_TEXT,
+    TARGET_HTML,
+    TARGET_TEXT,
+    TARGET_TEXT_URI_LIST,
+    TARGET_TEXT_PLAIN,
+    TARGET_VIM,
+    TARGET_VIMENC
+};
+
+/*
+ * Table of selection targets supported by Vim.
+ * Note: Order matters, preferred types should come first.
+ */
+static const GtkTargetEntry selection_targets[] =
+{
+    {VIMENC_ATOM_NAME,	0, TARGET_VIMENC},
+    {VIM_ATOM_NAME,	0, TARGET_VIM},
+    {"text/html",	0, TARGET_HTML},
+    {"UTF8_STRING",	0, TARGET_UTF8_STRING},
+    {"COMPOUND_TEXT",	0, TARGET_COMPOUND_TEXT},
+    {"TEXT",		0, TARGET_TEXT},
+    {"STRING",		0, TARGET_STRING}
+};
+#define N_SELECTION_TARGETS ARRAY_LENGTH(selection_targets)
+
+#ifdef FEAT_DND
+/*
+ * Table of DnD targets supported by Vim.
+ * Note: Order matters, preferred types should come first.
+ */
+static const GtkTargetEntry dnd_targets[] =
+{
+    {"text/uri-list",	0, TARGET_TEXT_URI_LIST},
+    {"text/html",	0, TARGET_HTML},
+    {"UTF8_STRING",	0, TARGET_UTF8_STRING},
+    {"STRING",		0, TARGET_STRING},
+    {"text/plain",	0, TARGET_TEXT_PLAIN}
+};
+# define N_DND_TARGETS ARRAY_LENGTH(dnd_targets)
+#endif
+
+
+/*
+ * "Monospace" is a standard font alias that should be present
+ * on all proper Pango/fontconfig installations.
+ */
+# define DEFAULT_FONT	"Monospace 10"
+
+#if defined(FEAT_GUI_GNOME) && defined(FEAT_SESSION)
+# define USE_GNOME_SESSION
+#endif
+
+#if !defined(FEAT_GUI_GNOME)
+/*
+ * Atoms used to communicate save-yourself from the X11 session manager. There
+ * is no need to move them into the GUI struct, since they should be constant.
+ */
+static GdkAtom wm_protocols_atom = GDK_NONE;
+static GdkAtom save_yourself_atom = GDK_NONE;
+#endif
+
+/*
+ * Atoms used to control/reference X11 selections.
+ */
+static GdkAtom html_atom = GDK_NONE;
+static GdkAtom utf8_string_atom = GDK_NONE;
+static GdkAtom vim_atom = GDK_NONE;	// Vim's own special selection format
+static GdkAtom vimenc_atom = GDK_NONE;	// Vim's extended selection format
+
+/*
+ * Keycodes recognized by vim.
+ * NOTE: when changing this, the table in gui_x11.c probably needs the same
+ * change!
+ */
+static struct special_key
+{
+    guint key_sym;
+    char_u code0;
+    char_u code1;
+}
+const special_keys[] =
+{
+    {GDK_Up,		'k', 'u'},
+    {GDK_Down,		'k', 'd'},
+    {GDK_Left,		'k', 'l'},
+    {GDK_Right,		'k', 'r'},
+    {GDK_F1,		'k', '1'},
+    {GDK_F2,		'k', '2'},
+    {GDK_F3,		'k', '3'},
+    {GDK_F4,		'k', '4'},
+    {GDK_F5,		'k', '5'},
+    {GDK_F6,		'k', '6'},
+    {GDK_F7,		'k', '7'},
+    {GDK_F8,		'k', '8'},
+    {GDK_F9,		'k', '9'},
+    {GDK_F10,		'k', ';'},
+    {GDK_F11,		'F', '1'},
+    {GDK_F12,		'F', '2'},
+    {GDK_F13,		'F', '3'},
+    {GDK_F14,		'F', '4'},
+    {GDK_F15,		'F', '5'},
+    {GDK_F16,		'F', '6'},
+    {GDK_F17,		'F', '7'},
+    {GDK_F18,		'F', '8'},
+    {GDK_F19,		'F', '9'},
+    {GDK_F20,		'F', 'A'},
+    {GDK_F21,		'F', 'B'},
+    {GDK_Pause,		'F', 'B'}, // Pause == F21 according to netbeans.txt
+    {GDK_F22,		'F', 'C'},
+    {GDK_F23,		'F', 'D'},
+    {GDK_F24,		'F', 'E'},
+    {GDK_F25,		'F', 'F'},
+    {GDK_F26,		'F', 'G'},
+    {GDK_F27,		'F', 'H'},
+    {GDK_F28,		'F', 'I'},
+    {GDK_F29,		'F', 'J'},
+    {GDK_F30,		'F', 'K'},
+    {GDK_F31,		'F', 'L'},
+    {GDK_F32,		'F', 'M'},
+    {GDK_F33,		'F', 'N'},
+    {GDK_F34,		'F', 'O'},
+    {GDK_F35,		'F', 'P'},
+#ifdef SunXK_F36
+    {SunXK_F36,		'F', 'Q'},
+    {SunXK_F37,		'F', 'R'},
+#endif
+    {GDK_Help,		'%', '1'},
+    {GDK_Undo,		'&', '8'},
+    {GDK_BackSpace,	'k', 'b'},
+    {GDK_Insert,	'k', 'I'},
+    {GDK_Delete,	'k', 'D'},
+    {GDK_3270_BackTab,	'k', 'B'},
+    {GDK_Clear,		'k', 'C'},
+    {GDK_Home,		'k', 'h'},
+    {GDK_End,		'@', '7'},
+    {GDK_Prior,		'k', 'P'},
+    {GDK_Next,		'k', 'N'},
+    {GDK_Print,		'%', '9'},
+    // Keypad keys:
+    {GDK_KP_Left,	'k', 'l'},
+    {GDK_KP_Right,	'k', 'r'},
+    {GDK_KP_Up,		'k', 'u'},
+    {GDK_KP_Down,	'k', 'd'},
+    {GDK_KP_Insert,	KS_EXTRA, (char_u)KE_KINS},
+    {GDK_KP_Delete,	KS_EXTRA, (char_u)KE_KDEL},
+    {GDK_KP_Home,	'K', '1'},
+    {GDK_KP_End,	'K', '4'},
+    {GDK_KP_Prior,	'K', '3'},  // page up
+    {GDK_KP_Next,	'K', '5'},  // page down
+
+    {GDK_KP_Add,	'K', '6'},
+    {GDK_KP_Subtract,	'K', '7'},
+    {GDK_KP_Divide,	'K', '8'},
+    {GDK_KP_Multiply,	'K', '9'},
+    {GDK_KP_Enter,	'K', 'A'},
+    {GDK_KP_Decimal,	'K', 'B'},
+
+    {GDK_KP_0,		'K', 'C'},
+    {GDK_KP_1,		'K', 'D'},
+    {GDK_KP_2,		'K', 'E'},
+    {GDK_KP_3,		'K', 'F'},
+    {GDK_KP_4,		'K', 'G'},
+    {GDK_KP_5,		'K', 'H'},
+    {GDK_KP_6,		'K', 'I'},
+    {GDK_KP_7,		'K', 'J'},
+    {GDK_KP_8,		'K', 'K'},
+    {GDK_KP_9,		'K', 'L'},
+
+    // End of list marker:
+    {0, 0, 0}
+};
+
+/*
+ * Flags for command line options table below.
+ */
+#define ARG_FONT	1
+#define ARG_GEOMETRY	2
+#define ARG_REVERSE	3
+#define ARG_NOREVERSE	4
+#define ARG_BACKGROUND	5
+#define ARG_FOREGROUND	6
+#define ARG_ICONIC	7
+#define ARG_ROLE	8
+#define ARG_NETBEANS	9
+#define ARG_XRM		10	// ignored
+#define ARG_MENUFONT	11	// ignored
+#define ARG_INDEX_MASK	0x00ff
+#define ARG_HAS_VALUE	0x0100	// a value is expected after the argument
+#define ARG_NEEDS_GUI	0x0200	// need to initialize the GUI for this
+#define ARG_FOR_GTK	0x0400	// argument is handled by GTK+ or GNOME
+#define ARG_COMPAT_LONG	0x0800	// accept -foo but substitute with --foo
+#define ARG_KEEP	0x1000	// don't remove argument from argv[]
+
+/*
+ * This table holds all the X GUI command line options allowed.  This includes
+ * the standard ones so that we can skip them when Vim is started without the
+ * GUI (but the GUI might start up later).
+ *
+ * When changing this, also update doc/gui_x11.txt and the usage message!!!
+ */
+typedef struct
+{
+    const char	    *name;
+    unsigned int    flags;
+}
+cmdline_option_T;
+
+static const cmdline_option_T cmdline_options[] =
+{
+    // We handle these options ourselves
+    {"-fn",		ARG_FONT|ARG_HAS_VALUE},
+    {"-font",		ARG_FONT|ARG_HAS_VALUE},
+    {"-geom",		ARG_GEOMETRY|ARG_HAS_VALUE},
+    {"-geometry",	ARG_GEOMETRY|ARG_HAS_VALUE},
+    {"-rv",		ARG_REVERSE},
+    {"-reverse",	ARG_REVERSE},
+    {"+rv",		ARG_NOREVERSE},
+    {"+reverse",	ARG_NOREVERSE},
+    {"-bg",		ARG_BACKGROUND|ARG_HAS_VALUE},
+    {"-background",	ARG_BACKGROUND|ARG_HAS_VALUE},
+    {"-fg",		ARG_FOREGROUND|ARG_HAS_VALUE},
+    {"-foreground",	ARG_FOREGROUND|ARG_HAS_VALUE},
+    {"-iconic",		ARG_ICONIC},
+    {"--role",		ARG_ROLE|ARG_HAS_VALUE},
+#ifdef FEAT_NETBEANS_INTG
+    {"-nb",		ARG_NETBEANS},	      // non-standard value format
+    {"-xrm",		ARG_XRM|ARG_HAS_VALUE},		// not implemented
+    {"-mf",		ARG_MENUFONT|ARG_HAS_VALUE},	// not implemented
+    {"-menufont",	ARG_MENUFONT|ARG_HAS_VALUE},	// not implemented
+#endif
+    // Arguments handled by GTK (and GNOME) internally.
+    {"--g-fatal-warnings",	ARG_FOR_GTK},
+    {"--gdk-debug",		ARG_FOR_GTK|ARG_HAS_VALUE},
+    {"--gdk-no-debug",		ARG_FOR_GTK|ARG_HAS_VALUE},
+    {"--gtk-debug",		ARG_FOR_GTK|ARG_HAS_VALUE},
+    {"--gtk-no-debug",		ARG_FOR_GTK|ARG_HAS_VALUE},
+    {"--gtk-module",		ARG_FOR_GTK|ARG_HAS_VALUE},
+    {"--sync",			ARG_FOR_GTK},
+    {"--display",		ARG_FOR_GTK|ARG_HAS_VALUE|ARG_COMPAT_LONG},
+    {"--name",			ARG_FOR_GTK|ARG_HAS_VALUE|ARG_COMPAT_LONG},
+    {"--class",			ARG_FOR_GTK|ARG_HAS_VALUE|ARG_COMPAT_LONG},
+    {"--screen",		ARG_FOR_GTK|ARG_HAS_VALUE},
+    {"--gxid-host",		ARG_FOR_GTK|ARG_HAS_VALUE},
+    {"--gxid-port",		ARG_FOR_GTK|ARG_HAS_VALUE},
+#ifdef FEAT_GUI_GNOME
+    {"--load-modules",		ARG_FOR_GTK|ARG_HAS_VALUE},
+    {"--sm-client-id",		ARG_FOR_GTK|ARG_HAS_VALUE},
+    {"--sm-config-prefix",	ARG_FOR_GTK|ARG_HAS_VALUE},
+    {"--sm-disable",		ARG_FOR_GTK},
+    {"--oaf-ior-fd",		ARG_FOR_GTK|ARG_HAS_VALUE},
+    {"--oaf-activate-iid",	ARG_FOR_GTK|ARG_HAS_VALUE},
+    {"--oaf-private",		ARG_FOR_GTK},
+    {"--enable-sound",		ARG_FOR_GTK},
+    {"--disable-sound",		ARG_FOR_GTK},
+    {"--espeaker",		ARG_FOR_GTK|ARG_HAS_VALUE},
+    {"-?",			ARG_FOR_GTK|ARG_NEEDS_GUI},
+    {"--help",			ARG_FOR_GTK|ARG_NEEDS_GUI|ARG_KEEP},
+    {"--usage",			ARG_FOR_GTK|ARG_NEEDS_GUI},
+# if 0 // conflicts with Vim's own --version argument
+    {"--version",		ARG_FOR_GTK|ARG_NEEDS_GUI},
+# endif
+    {"--disable-crash-dialog",	ARG_FOR_GTK},
+#endif
+    {NULL, 0}
+};
+
+static int    gui_argc = 0;
+static char **gui_argv = NULL;
+
+static const char *role_argument = NULL;
+#if defined(USE_GNOME_SESSION)
+static const char *restart_command = NULL;
+static       char *abs_restart_command = NULL;
+#endif
+static int found_iconic_arg = FALSE;
+
+#ifdef FEAT_GUI_GNOME
+/*
+ * Can't use Gnome if --socketid given
+ */
+static int using_gnome = 0;
+#else
+# define using_gnome 0
+#endif
+
+// Comment out the following line to ignore code for resize history tracking.
+#define TRACK_RESIZE_HISTORY
+#ifdef TRACK_RESIZE_HISTORY
+/*
+ * Keep a short term resize history so that stale gtk responses can be
+ * discarded.
+ * When a gtk_window_resize() request is sent to gtk, the width/height of
+ * the request is saved. Recent stale requests are kept around in a list.
+ * See https://github.com/vim/vim/issues/10123
+ */
+# if 0  // Change to 1 to enable ch_log() calls for debugging.
+#  ifdef FEAT_EVAL
+#   define ENABLE_RESIZE_HISTORY_LOG
+#  endif
+# endif
+
+/*
+ * History item of a resize request.
+ * Width and height are of gui.mainwin.
+ */
+typedef struct resize_history {
+    int used;	    // If true, can't match for discard. Only matches once.
+    int width;
+    int height;
+# ifdef ENABLE_RESIZE_HISTORY_LOG
+    int seq;	    // for ch_log messages
+# endif
+    struct resize_history *next;
+} resize_hist_T;
+
+// never NULL during execution
+static resize_hist_T *latest_resize_hist;
+// list of stale resize requests
+static resize_hist_T *old_resize_hists;
+
+/*
+ * Used when calling gtk_window_resize().
+ * Create a resize request history item, put previous request on stale list.
+ * Width/height are the size of the request for the gui.mainwin.
+ */
+    static void
+alloc_resize_hist(int width, int height)
+{
+    // alloc a new resize hist, save current in list of old history
+    resize_hist_T *prev_hist = latest_resize_hist;
+    resize_hist_T *new_hist = ALLOC_CLEAR_ONE(resize_hist_T);
+
+    new_hist->width = width;
+    new_hist->height = height;
+    latest_resize_hist = new_hist;
+
+    // previous hist item becomes head of list
+    prev_hist->next = old_resize_hists;
+    old_resize_hists = prev_hist;
+
+# ifdef ENABLE_RESIZE_HISTORY_LOG
+    new_hist->seq = prev_hist->seq + 1;
+    ch_log(NULL, "gui_gtk: New resize seq %d (%d, %d) [%d, %d]",
+	   new_hist->seq, width, height, (int)Columns, (int)Rows);
+# endif
+}
+
+/*
+ * Free everything on the stale resize history list.
+ * This list is empty when there are no outstanding resize requests.
+ */
+    static void
+clear_resize_hists(void)
+{
+# ifdef ENABLE_RESIZE_HISTORY_LOG
+    int		    i = 0;
+# endif
+
+    if (latest_resize_hist)
+	latest_resize_hist->used = TRUE;
+    while (old_resize_hists != NULL)
+    {
+	resize_hist_T *next_hist = old_resize_hists->next;
+
+	vim_free(old_resize_hists);
+	old_resize_hists = next_hist;
+# ifdef ENABLE_RESIZE_HISTORY_LOG
+	i++;
+# endif
+    }
+# ifdef ENABLE_RESIZE_HISTORY_LOG
+    ch_log(NULL, "gui_gtk: free %d hists", i);
+# endif
+}
+
+// true if hist item is unused and matches w,h
+# define MATCH_WIDTH_HEIGHT(hist, w, h) \
+	  (!hist->used && hist->width == w && hist->height == h)
+
+/*
+ * Search the resize hist list.
+ * Return true if the specified width,height match an item in the list that
+ * has never matched before. Mark the matching item as used so it will
+ * not match again.
+ */
+    static int
+match_stale_width_height(int width, int height)
+{
+    resize_hist_T *hist = old_resize_hists;
+
+    for (hist = old_resize_hists; hist != NULL; hist = hist->next)
+	if (MATCH_WIDTH_HEIGHT(hist, width, height))
+	{
+# ifdef ENABLE_RESIZE_HISTORY_LOG
+	    ch_log(NULL, "gui_gtk: discard seq %d, cur seq %d",
+		   hist->seq, latest_resize_hist->seq);
+# endif
+	    hist->used = TRUE;
+	    return TRUE;
+	}
+    return FALSE;
+}
+
+# if defined(EXITFREE)
+    static void
+free_all_resize_hist(void)
+{
+    clear_resize_hists();
+    vim_free(latest_resize_hist);
+}
+# endif
+#endif
+
+/*
+ * GTK doesn't set the GDK_BUTTON1_MASK state when dragging a touch. Add this
+ * state when dragging.
+ */
+static guint dragging_button_state = 0;
+
+/*
+ * Parse the GUI related command-line arguments.  Any arguments used are
+ * deleted from argv, and *argc is decremented accordingly.  This is called
+ * when vim is started, whether or not the GUI has been started.
+ */
+    void
+gui_mch_prepare(int *argc, char **argv)
+{
+    const cmdline_option_T  *option;
+    int			    i	= 0;
+    int			    len = 0;
+
+#if defined(USE_GNOME_SESSION)
+    /*
+     * Determine the command used to invoke Vim, to be passed as restart
+     * command to the session manager.	If argv[0] contains any directory
+     * components try building an absolute path, otherwise leave it as is.
+     */
+    restart_command = argv[0];
+
+    if (strchr(argv[0], G_DIR_SEPARATOR) != NULL)
+    {
+	char_u buf[MAXPATHL];
+
+	if (mch_FullName((char_u *)argv[0], buf, (int)sizeof(buf), TRUE) == OK)
+	{
+	    abs_restart_command = (char *)vim_strsave(buf);
+	    restart_command = abs_restart_command;
+	}
+    }
+#endif
+
+    /*
+     * Move all the entries in argv which are relevant to GTK+ and GNOME
+     * into gui_argv.  Freed later in gui_mch_init().
+     */
+    gui_argc = 0;
+    gui_argv = ALLOC_MULT(char *, *argc + 1);
+
+    g_return_if_fail(gui_argv != NULL);
+
+    gui_argv[gui_argc++] = argv[i++];
+
+    while (i < *argc)
+    {
+	// Don't waste CPU cycles on non-option arguments.
+	if (argv[i][0] != '-' && argv[i][0] != '+')
+	{
+	    ++i;
+	    continue;
+	}
+
+	// Look for argv[i] in cmdline_options[] table.
+	for (option = &cmdline_options[0]; option->name != NULL; ++option)
+	{
+	    len = strlen(option->name);
+
+	    if (strncmp(argv[i], option->name, len) == 0)
+	    {
+		if (argv[i][len] == '\0')
+		    break;
+		// allow --foo=bar style
+		if (argv[i][len] == '=' && (option->flags & ARG_HAS_VALUE))
+		    break;
+#ifdef FEAT_NETBEANS_INTG
+		// darn, -nb has non-standard syntax
+		if (vim_strchr((char_u *)":=", argv[i][len]) != NULL
+			&& (option->flags & ARG_INDEX_MASK) == ARG_NETBEANS)
+		    break;
+#endif
+	    }
+	    else if ((option->flags & ARG_COMPAT_LONG)
+			&& strcmp(argv[i], option->name + 1) == 0)
+	    {
+		// Replace the standard X arguments "-name" and "-display"
+		// with their GNU-style long option counterparts.
+		argv[i] = (char *)option->name;
+		break;
+	    }
+	}
+	if (option->name == NULL) // no match
+	{
+	    ++i;
+	    continue;
+	}
+
+	if (option->flags & ARG_FOR_GTK)
+	{
+	    // Move the argument into gui_argv, which
+	    // will later be passed to gtk_init_check()
+	    gui_argv[gui_argc++] = argv[i];
+	}
+	else
+	{
+	    char *value = NULL;
+
+	    // Extract the option's value if there is one.
+	    // Accept both "--foo bar" and "--foo=bar" style.
+	    if (option->flags & ARG_HAS_VALUE)
+	    {
+		if (argv[i][len] == '=')
+		    value = &argv[i][len + 1];
+		else if (i + 1 < *argc && strcmp(argv[i + 1], "--") != 0)
+		    value = argv[i + 1];
+	    }
+
+	    // Check for options handled by Vim itself
+	    switch (option->flags & ARG_INDEX_MASK)
+	    {
+		case ARG_REVERSE:
+		    found_reverse_arg = TRUE;
+		    break;
+		case ARG_NOREVERSE:
+		    found_reverse_arg = FALSE;
+		    break;
+		case ARG_FONT:
+		    font_argument = value;
+		    break;
+		case ARG_GEOMETRY:
+		    if (value != NULL)
+			gui.geom = vim_strsave((char_u *)value);
+		    break;
+		case ARG_BACKGROUND:
+		    background_argument = value;
+		    break;
+		case ARG_FOREGROUND:
+		    foreground_argument = value;
+		    break;
+		case ARG_ICONIC:
+		    found_iconic_arg = TRUE;
+		    break;
+		case ARG_ROLE:
+		    role_argument = value; // used later in gui_mch_open()
+		    break;
+#ifdef FEAT_NETBEANS_INTG
+		case ARG_NETBEANS:
+		    gui.dofork = FALSE; // don't fork() when starting GUI
+		    netbeansArg = argv[i];
+		    break;
+#endif
+		default:
+		    break;
+	    }
+	}
+
+	// These arguments make gnome_program_init() print a message and exit.
+	// Must start the GUI for this, otherwise ":gui" will exit later!
+	// Only when the GUI can start.
+	if ((option->flags & ARG_NEEDS_GUI)
+				      && gui_mch_early_init_check(FALSE) == OK)
+	    gui.starting = TRUE;
+
+	if (option->flags & ARG_KEEP)
+	    ++i;
+	else
+	{
+	    // Remove the flag from the argument vector.
+	    if (--*argc > i)
+	    {
+		int n_strip = 1;
+
+		// Move the argument's value as well, if there is one.
+		if ((option->flags & ARG_HAS_VALUE)
+			&& argv[i][len] != '='
+			&& strcmp(argv[i + 1], "--") != 0)
+		{
+		    ++n_strip;
+		    --*argc;
+		    if (option->flags & ARG_FOR_GTK)
+			gui_argv[gui_argc++] = argv[i + 1];
+		}
+
+		if (*argc > i)
+		    mch_memmove(&argv[i], &argv[i + n_strip],
+						(*argc - i) * sizeof(char *));
+	    }
+	    argv[*argc] = NULL;
+	}
+    }
+
+    gui_argv[gui_argc] = NULL;
+}
+
+#if defined(EXITFREE) || defined(PROTO)
+    void
+gui_mch_free_all(void)
+{
+    vim_free(gui_argv);
+#if defined(USE_GNOME_SESSION)
+    vim_free(abs_restart_command);
+#endif
+#ifdef TRACK_RESIZE_HISTORY
+    free_all_resize_hist();
+#endif
+}
+#endif
+
+#if !GTK_CHECK_VERSION(3,0,0)
+/*
+ * This should be maybe completely removed.
+ * Doesn't seem possible, since check_copy_area() relies on
+ * this information.  --danielk
+ */
+    static gint
+visibility_event(GtkWidget *widget UNUSED,
+		 GdkEventVisibility *event,
+		 gpointer data UNUSED)
+{
+    gui.visibility = event->state;
+    /*
+     * When we do an gdk_window_copy_area(), and the window is partially
+     * obscured, we want to receive an event to tell us whether it worked
+     * or not.
+     */
+    if (gui.text_gc != NULL)
+	gdk_gc_set_exposures(gui.text_gc,
+			     gui.visibility != GDK_VISIBILITY_UNOBSCURED);
+    return FALSE;
+}
+#endif // !GTK_CHECK_VERSION(3,0,0)
+
+/*
+ * Redraw the corresponding portions of the screen.
+ */
+#if GTK_CHECK_VERSION(3,0,0)
+    static gboolean
+draw_event(GtkWidget *widget UNUSED,
+	   cairo_t   *cr,
+	   gpointer   user_data UNUSED)
+{
+    // Skip this when the GUI isn't set up yet, will redraw later.
+    if (gui.starting)
+	return FALSE;
+
+    out_flush();		// make sure all output has been processed
+				// for GTK+ 3, may induce other draw events.
+
+    cairo_set_source_surface(cr, gui.surface, 0, 0);
+
+    {
+	cairo_rectangle_list_t *list = NULL;
+
+	list = cairo_copy_clip_rectangle_list(cr);
+	if (list->status != CAIRO_STATUS_CLIP_NOT_REPRESENTABLE)
+	{
+	    int i;
+
+	    for (i = 0; i < list->num_rectangles; i++)
+	    {
+		const cairo_rectangle_t *rect = &list->rectangles[i];
+		cairo_rectangle(cr, rect->x, rect->y,
+						    rect->width, rect->height);
+		cairo_fill(cr);
+	    }
+	}
+	cairo_rectangle_list_destroy(list);
+    }
+
+    return FALSE;
+}
+#else // !GTK_CHECK_VERSION(3,0,0)
+    static gint
+expose_event(GtkWidget *widget UNUSED,
+	     GdkEventExpose *event,
+	     gpointer data UNUSED)
+{
+    // Skip this when the GUI isn't set up yet, will redraw later.
+    if (gui.starting)
+	return FALSE;
+
+    out_flush();		// make sure all output has been processed
+    gui_redraw(event->area.x, event->area.y,
+	       event->area.width, event->area.height);
+
+    // Clear the border areas if needed
+    if (event->area.x < FILL_X(0))
+	gdk_window_clear_area(gui.drawarea->window, 0, 0, FILL_X(0), 0);
+    if (event->area.y < FILL_Y(0))
+	gdk_window_clear_area(gui.drawarea->window, 0, 0, 0, FILL_Y(0));
+    if (event->area.x > FILL_X(Columns))
+	gdk_window_clear_area(gui.drawarea->window,
+			      FILL_X((int)Columns), 0, 0, 0);
+    if (event->area.y > FILL_Y(Rows))
+	gdk_window_clear_area(gui.drawarea->window, 0, FILL_Y((int)Rows), 0, 0);
+
+    return FALSE;
+}
+#endif // !GTK_CHECK_VERSION(3,0,0)
+
+#ifdef FEAT_CLIENTSERVER
+/*
+ * Handle changes to the "Comm" property
+ */
+    static gint
+property_event(GtkWidget *widget,
+	       GdkEventProperty *event,
+	       gpointer data UNUSED)
+{
+    if (event->type == GDK_PROPERTY_NOTIFY
+	    && event->state == (int)GDK_PROPERTY_NEW_VALUE
+	    && GDK_WINDOW_XID(event->window) == commWindow
+	    && GET_X_ATOM(event->atom) == commProperty)
+    {
+	XEvent xev;
+
+	// Translate to XLib
+	xev.xproperty.type = PropertyNotify;
+	xev.xproperty.atom = commProperty;
+	xev.xproperty.window = commWindow;
+	xev.xproperty.state = PropertyNewValue;
+	serverEventProc(GDK_WINDOW_XDISPLAY(gtk_widget_get_window(widget)),
+								      &xev, 0);
+    }
+    return FALSE;
+}
+#endif // defined(FEAT_CLIENTSERVER)
+
+/*
+ * Handle changes to the "Xft/DPI" setting
+ */
+    static void
+gtk_settings_xft_dpi_changed_cb(GtkSettings *gtk_settings UNUSED,
+				    GParamSpec *pspec UNUSED,
+				    gpointer data UNUSED)
+{
+    // Create a new PangoContext for this screen, and initialize it
+    // with the current font if necessary.
+    if (gui.text_context != NULL)
+	g_object_unref(gui.text_context);
+
+    gui.text_context = gtk_widget_create_pango_context(gui.mainwin);
+    pango_context_set_base_dir(gui.text_context, PANGO_DIRECTION_LTR);
+
+    if (gui.norm_font != NULL)
+    {
+	// force default font
+	gui_mch_init_font(*p_guifont == NUL ? NULL : p_guifont, FALSE);
+	gui_set_shellsize(TRUE, FALSE, RESIZE_BOTH);
+    }
+}
+
+typedef gboolean timeout_cb_type;
+
+/*
+ * Start a timer that will invoke the specified callback.
+ * Returns the ID of the timer.
+ */
+    static guint
+timeout_add(int time, timeout_cb_type (*callback)(gpointer), int *flagp)
+{
+    return g_timeout_add((guint)time, (GSourceFunc)callback, flagp);
+}
+
+    static void
+timeout_remove(guint timer)
+{
+    g_source_remove(timer);
+}
+
+
+/////////////////////////////////////////////////////////////////////////////
+// Focus handlers:
+
+
+/*
+ * This is a simple state machine:
+ * BLINK_NONE	not blinking at all
+ * BLINK_OFF	blinking, cursor is not shown
+ * BLINK_ON	blinking, cursor is shown
+ */
+
+#define BLINK_NONE  0
+#define BLINK_OFF   1
+#define BLINK_ON    2
+
+static int blink_state = BLINK_NONE;
+static long_u blink_waittime = 700;
+static long_u blink_ontime = 400;
+static long_u blink_offtime = 250;
+static guint blink_timer = 0;
+
+    int
+gui_mch_is_blinking(void)
+{
+    return blink_state != BLINK_NONE;
+}
+
+    int
+gui_mch_is_blink_off(void)
+{
+    return blink_state == BLINK_OFF;
+}
+
+    void
+gui_mch_set_blinking(long waittime, long on, long off)
+{
+    blink_waittime = waittime;
+    blink_ontime = on;
+    blink_offtime = off;
+}
+
+/*
+ * Stop the cursor blinking.  Show the cursor if it wasn't shown.
+ */
+    void
+gui_mch_stop_blink(int may_call_gui_update_cursor)
+{
+    if (blink_timer)
+    {
+	timeout_remove(blink_timer);
+	blink_timer = 0;
+    }
+    if (blink_state == BLINK_OFF && may_call_gui_update_cursor)
+    {
+	gui_update_cursor(TRUE, FALSE);
+#if !GTK_CHECK_VERSION(3,0,0)
+	gui_mch_flush();
+#endif
+    }
+    blink_state = BLINK_NONE;
+}
+
+    static timeout_cb_type
+blink_cb(gpointer data UNUSED)
+{
+    if (blink_state == BLINK_ON)
+    {
+	gui_undraw_cursor();
+	blink_state = BLINK_OFF;
+	blink_timer = timeout_add(blink_offtime, blink_cb, NULL);
+    }
+    else
+    {
+	gui_update_cursor(TRUE, FALSE);
+	blink_state = BLINK_ON;
+	blink_timer = timeout_add(blink_ontime, blink_cb, NULL);
+    }
+#if !GTK_CHECK_VERSION(3,0,0)
+    gui_mch_flush();
+#endif
+
+    return FALSE;		// don't happen again
+}
+
+/*
+ * Start the cursor blinking.  If it was already blinking, this restarts the
+ * waiting time and shows the cursor.
+ */
+    void
+gui_mch_start_blink(void)
+{
+    if (blink_timer)
+    {
+	timeout_remove(blink_timer);
+	blink_timer = 0;
+    }
+    // Only switch blinking on if none of the times is zero
+    if (blink_waittime && blink_ontime && blink_offtime && gui.in_focus)
+    {
+	blink_timer = timeout_add(blink_waittime, blink_cb, NULL);
+	blink_state = BLINK_ON;
+	gui_update_cursor(TRUE, FALSE);
+#if !GTK_CHECK_VERSION(3,0,0)
+	gui_mch_flush();
+#endif
+    }
+}
+
+    static gint
+enter_notify_event(GtkWidget *widget UNUSED,
+		   GdkEventCrossing *event UNUSED,
+		   gpointer data UNUSED)
+{
+    if (blink_state == BLINK_NONE)
+	gui_mch_start_blink();
+
+    // make sure keyboard input goes there
+    if (gtk_socket_id == 0 || !gtk_widget_has_focus(gui.drawarea))
+	gtk_widget_grab_focus(gui.drawarea);
+
+    return FALSE;
+}
+
+    static gint
+leave_notify_event(GtkWidget *widget UNUSED,
+		   GdkEventCrossing *event UNUSED,
+		   gpointer data UNUSED)
+{
+    if (blink_state != BLINK_NONE)
+	gui_mch_stop_blink(TRUE);
+
+    return FALSE;
+}
+
+    static gint
+focus_in_event(GtkWidget *widget,
+	       GdkEventFocus *event UNUSED,
+	       gpointer data UNUSED)
+{
+    gui_focus_change(TRUE);
+
+    if (blink_state == BLINK_NONE)
+	gui_mch_start_blink();
+
+    // make sure keyboard input goes to the draw area (if this is focus for a
+    // window)
+    if (widget != gui.drawarea)
+	gtk_widget_grab_focus(gui.drawarea);
+
+    return TRUE;
+}
+
+    static gint
+focus_out_event(GtkWidget *widget UNUSED,
+		GdkEventFocus *event UNUSED,
+		gpointer data UNUSED)
+{
+    gui_focus_change(FALSE);
+
+    if (blink_state != BLINK_NONE)
+	gui_mch_stop_blink(TRUE);
+
+    return TRUE;
+}
+
+
+/*
+ * Translate a GDK key value to UTF-8 independently of the current locale.
+ * The output is written to string, which must have room for at least 6 bytes
+ * plus the NUL terminator.  Returns the length in bytes.
+ *
+ * event->string is evil; see here why:
+ * http://developer.gnome.org/doc/API/2.0/gdk/gdk-Event-Structures.html#GdkEventKey
+ */
+    static int
+keyval_to_string(unsigned int keyval, char_u *string)
+{
+    int	    len;
+    guint32 uc;
+
+    uc = gdk_keyval_to_unicode(keyval);
+    if (uc != 0)
+    {
+	// Translate a normal key to UTF-8.  This doesn't work for dead
+	// keys of course, you _have_ to use an input method for that.
+	len = utf_char2bytes((int)uc, string);
+    }
+    else
+    {
+	// Translate keys which are represented by ASCII control codes in Vim.
+	// There are only a few of those; most control keys are translated to
+	// special terminal-like control sequences.
+	len = 1;
+	switch (keyval)
+	{
+	    case GDK_Tab: case GDK_KP_Tab: case GDK_ISO_Left_Tab:
+		string[0] = TAB;
+		break;
+	    case GDK_Linefeed:
+		string[0] = NL;
+		break;
+	    case GDK_Return: case GDK_ISO_Enter: case GDK_3270_Enter:
+		string[0] = CAR;
+		break;
+	    case GDK_Escape:
+		string[0] = ESC;
+		break;
+	    default:
+		len = 0;
+		break;
+	}
+    }
+    string[len] = NUL;
+
+    return len;
+}
+
+    static int
+modifiers_gdk2vim(guint state)
+{
+    int modifiers = 0;
+
+    if (state & GDK_SHIFT_MASK)
+	modifiers |= MOD_MASK_SHIFT;
+    if (state & GDK_CONTROL_MASK)
+	modifiers |= MOD_MASK_CTRL;
+    if (state & GDK_MOD1_MASK)
+	modifiers |= MOD_MASK_ALT;
+#if GTK_CHECK_VERSION(2,10,0)
+    if (state & GDK_SUPER_MASK)
+	modifiers |= MOD_MASK_META;
+#endif
+    if (state & GDK_MOD4_MASK)
+	modifiers |= MOD_MASK_META;
+
+    return modifiers;
+}
+
+    static int
+modifiers_gdk2mouse(guint state)
+{
+    int modifiers = 0;
+
+    if (state & GDK_SHIFT_MASK)
+	modifiers |= MOUSE_SHIFT;
+    if (state & GDK_CONTROL_MASK)
+	modifiers |= MOUSE_CTRL;
+    if (state & GDK_MOD1_MASK)
+	modifiers |= MOUSE_ALT;
+
+    return modifiers;
+}
+
+/*
+ * Main keyboard handler:
+ */
+    static gint
+key_press_event(GtkWidget *widget UNUSED,
+		GdkEventKey *event,
+		gpointer data UNUSED)
+{
+    // For GTK+ 2 we know for sure how large the string might get.
+    // (That is, up to 6 bytes + NUL + CSI escapes + safety measure.)
+    char_u	string[32], string2[32];
+    guint	key_sym;
+    int		len;
+    int		i;
+    int		modifiers;
+    int		key;
+    guint	state;
+    char_u	*s, *d;
+    int		ctrl_prefix_added = 0;
+
+    gui.event_time = event->time;
+    key_sym = event->keyval;
+    state = event->state;
+
+#ifdef FEAT_XIM
+    if (xim_queue_key_press_event(event, TRUE))
+	return TRUE;
+#endif
+
+#ifdef SunXK_F36
+    /*
+     * These keys have bogus lookup strings, and trapping them here is
+     * easier than trying to XRebindKeysym() on them with every possible
+     * combination of modifiers.
+     */
+    if (key_sym == SunXK_F36 || key_sym == SunXK_F37)
+	len = 0;
+    else
+#endif
+    {
+	len = keyval_to_string(key_sym, string2);
+
+	// Careful: convert_input() doesn't handle the NUL character.
+	// No need to convert pure ASCII anyway, thus the len > 1 check.
+	if (len > 1 && input_conv.vc_type != CONV_NONE)
+	    len = convert_input(string2, len, sizeof(string2));
+
+	s = string2;
+	d = string;
+	for (i = 0; i < len; ++i)
+	{
+	    *d++ = s[i];
+	    if (d[-1] == CSI && d + 2 < string + sizeof(string))
+	    {
+		// Turn CSI into K_CSI.
+		*d++ = KS_EXTRA;
+		*d++ = (int)KE_CSI;
+	    }
+	}
+	len = d - string;
+    }
+
+    // Shift-Tab results in Left_Tab, but we want <S-Tab>
+    if (key_sym == GDK_ISO_Left_Tab)
+    {
+	key_sym = GDK_Tab;
+	state |= GDK_SHIFT_MASK;
+    }
+
+#ifdef FEAT_MENU
+    // If there is a menu and 'wak' is "yes", or 'wak' is "menu" and the key
+    // is a menu shortcut, we ignore everything with the ALT modifier.
+    if ((state & GDK_MOD1_MASK)
+	    && gui.menu_is_active
+	    && (*p_wak == 'y'
+		|| (*p_wak == 'm'
+		    && len == 1
+		    && gui_is_menu_shortcut(string[0]))))
+	// For GTK2 we return false to signify that we haven't handled the
+	// keypress, so that gtk will handle the mnemonic or accelerator.
+	return FALSE;
+#endif
+
+    // We used to apply Alt/Meta to the key here (Mod1Mask), but that is now
+    // done later, the same as it happens for the terminal.  Hopefully that
+    // works for everybody...
+
+    // Check for special keys.	Also do this when len == 1 (key has an ASCII
+    // value) to detect backspace, delete and keypad keys.
+    if (len == 0 || len == 1)
+    {
+	for (i = 0; special_keys[i].key_sym != 0; i++)
+	{
+	    if (special_keys[i].key_sym == key_sym)
+	    {
+		string[0] = CSI;
+		string[1] = special_keys[i].code0;
+		string[2] = special_keys[i].code1;
+		len = -3;
+		break;
+	    }
+	}
+    }
+
+#ifdef GDK_KEY_dead_circumflex
+    // Belgian Ctrl+[ workaround
+    if (len == 0 && key_sym == GDK_KEY_dead_circumflex)
+    {
+	string[0] = CSI;
+	string[1] = KS_MODIFIER;
+	string[2] = MOD_MASK_CTRL;
+	string[3] = '[';
+	len = 4;
+	add_to_input_buf(string, len);
+	// workaround has to return here, otherwise our fake string[] entries
+	// are confusing code downstream
+	return TRUE;
+    }
+#endif
+
+    if (len == 0)   // Unrecognized key
+	return TRUE;
+
+    // For some keys a shift modifier is translated into another key code.
+    if (len == -3)
+	key = TO_SPECIAL(string[1], string[2]);
+    else
+    {
+	string[len] = NUL;
+	key = mb_ptr2char(string);
+    }
+
+    // Handle modifiers.
+    modifiers = modifiers_gdk2vim(state);
+
+    // Recognize special keys.
+    key = simplify_key(key, &modifiers);
+    if (key == CSI)
+	key = K_CSI;
+    if (IS_SPECIAL(key))
+    {
+	string[0] = CSI;
+	string[1] = K_SECOND(key);
+	string[2] = K_THIRD(key);
+	len = 3;
+    }
+    else
+    {
+	// Some keys need adjustment when the Ctrl modifier is used.
+	key = may_adjust_key_for_ctrl(modifiers, key);
+
+	// May remove the Shift modifier if it's included in the key.
+	modifiers = may_remove_shift_modifier(modifiers, key);
+
+	len = mb_char2bytes(key, string);
+    }
+
+    if (modifiers != 0)
+    {
+	string2[0] = CSI;
+	string2[1] = KS_MODIFIER;
+	string2[2] = modifiers;
+	add_to_input_buf(string2, 3);
+	if (modifiers == 0x4)
+	    ctrl_prefix_added = 1;
+    }
+
+    // Check if the key interrupts.
+    {
+	int int_ch = check_for_interrupt(key, modifiers);
+
+	if (int_ch != NUL)
+	{
+	    trash_input_buf();
+	    string[0] = int_ch;
+	    len = 1;
+	}
+    }
+
+    // workaround for German keyboard, where instead of '[' char we have code
+    // sequence of bytes 195, 188 (UTF-8 for "u-umlaut")
+    if (ctrl_prefix_added && len == 2
+		    && ((int)string[0]) == 195
+		    && ((int)string[1]) == 188)
+    {
+	string[0] = 91; // ASCII('[')
+	len = 1;
+    }
+    add_to_input_buf(string, len);
+
+    // blank out the pointer if necessary
+    if (p_mh)
+	gui_mch_mousehide(TRUE);
+
+    return TRUE;
+}
+
+#if defined(FEAT_XIM) || GTK_CHECK_VERSION(3,0,0)
+    static gboolean
+key_release_event(GtkWidget *widget UNUSED,
+		  GdkEventKey *event UNUSED,
+		  gpointer data UNUSED)
+{
+# if defined(FEAT_XIM)
+    gui.event_time = event->time;
+    /*
+     * GTK+ 2 input methods may do fancy stuff on key release events too.
+     * With the default IM for instance, you can enter any UCS code point
+     * by holding down CTRL-SHIFT and typing hexadecimal digits.
+     */
+    return xim_queue_key_press_event(event, FALSE);
+# else
+    return TRUE;
+# endif
+}
+#endif
+
+
+/////////////////////////////////////////////////////////////////////////////
+// Selection handlers:
+
+// Remember when clip_lose_selection was called from here, we must not call
+// gtk_selection_owner_set() then.
+static int in_selection_clear_event = FALSE;
+
+    static gint
+selection_clear_event(GtkWidget		*widget UNUSED,
+		      GdkEventSelection	*event,
+		      gpointer		user_data UNUSED)
+{
+    in_selection_clear_event = TRUE;
+    if (event->selection == clip_plus.gtk_sel_atom)
+	clip_lose_selection(&clip_plus);
+    else
+	clip_lose_selection(&clip_star);
+    in_selection_clear_event = FALSE;
+
+    return TRUE;
+}
+
+#define RS_NONE	0	// selection_received_cb() not called yet
+#define RS_OK	1	// selection_received_cb() called and OK
+#define RS_FAIL	2	// selection_received_cb() called and failed
+static int received_selection = RS_NONE;
+
+    static void
+selection_received_cb(GtkWidget		*widget UNUSED,
+		      GtkSelectionData	*data,
+		      guint		time_ UNUSED,
+		      gpointer		user_data UNUSED)
+{
+    Clipboard_T	    *cbd;
+    char_u	    *text;
+    char_u	    *tmpbuf = NULL;
+    guchar	    *tmpbuf_utf8 = NULL;
+    int		    len;
+    int		    motion_type = MAUTO;
+
+    if (gtk_selection_data_get_selection(data) == clip_plus.gtk_sel_atom)
+	cbd = &clip_plus;
+    else
+	cbd = &clip_star;
+
+    text = (char_u *)gtk_selection_data_get_data(data);
+    len = gtk_selection_data_get_length(data);
+
+    if (text == NULL || len <= 0)
+    {
+	received_selection = RS_FAIL;
+	// clip_free_selection(cbd); ???
+
+	return;
+    }
+
+    if (gtk_selection_data_get_data_type(data) == vim_atom)
+    {
+	motion_type = *text++;
+	--len;
+    }
+    else if (gtk_selection_data_get_data_type(data) == vimenc_atom)
+    {
+	char_u		*enc;
+	vimconv_T	conv;
+
+	motion_type = *text++;
+	--len;
+
+	enc = text;
+	text += STRLEN(text) + 1;
+	len -= text - enc;
+
+	// If the encoding of the text is different from 'encoding', attempt
+	// converting it.
+	conv.vc_type = CONV_NONE;
+	convert_setup(&conv, enc, p_enc);
+	if (conv.vc_type != CONV_NONE)
+	{
+	    tmpbuf = string_convert(&conv, text, &len);
+	    if (tmpbuf != NULL)
+		text = tmpbuf;
+	    convert_setup(&conv, NULL, NULL);
+	}
+    }
+
+    // gtk_selection_data_get_text() handles all the nasty details
+    // and targets and encodings etc.  This rocks so hard.
+    else
+    {
+	tmpbuf_utf8 = gtk_selection_data_get_text(data);
+	if (tmpbuf_utf8 != NULL)
+	{
+	    len = STRLEN(tmpbuf_utf8);
+	    if (input_conv.vc_type != CONV_NONE)
+	    {
+		tmpbuf = string_convert(&input_conv, tmpbuf_utf8, &len);
+		if (tmpbuf != NULL)
+		    text = tmpbuf;
+	    }
+	    else
+		text = tmpbuf_utf8;
+	}
+	else if (len >= 2 && text[0] == 0xff && text[1] == 0xfe)
+	{
+	    vimconv_T conv;
+
+	    // UTF-16, we get this for HTML
+	    conv.vc_type = CONV_NONE;
+	    convert_setup_ext(&conv, (char_u *)"utf-16le", FALSE, p_enc, TRUE);
+
+	    if (conv.vc_type != CONV_NONE)
+	    {
+		text += 2;
+		len -= 2;
+		tmpbuf = string_convert(&conv, text, &len);
+		convert_setup(&conv, NULL, NULL);
+	    }
+	    if (tmpbuf != NULL)
+		text = tmpbuf;
+	}
+    }
+
+    // Chop off any trailing NUL bytes.  OpenOffice sends these.
+    while (len > 0 && text[len - 1] == NUL)
+	--len;
+
+    clip_yank_selection(motion_type, text, (long)len, cbd);
+    received_selection = RS_OK;
+    vim_free(tmpbuf);
+    g_free(tmpbuf_utf8);
+}
+
+/*
+ * Prepare our selection data for passing it to the external selection
+ * client.
+ */
+    static void
+selection_get_cb(GtkWidget	    *widget UNUSED,
+		 GtkSelectionData   *selection_data,
+		 guint		    info,
+		 guint		    time_ UNUSED,
+		 gpointer	    user_data UNUSED)
+{
+    char_u	    *string;
+    char_u	    *tmpbuf;
+    long_u	    tmplen;
+    int		    length;
+    int		    motion_type;
+    GdkAtom	    type;
+    Clipboard_T    *cbd;
+
+    if (gtk_selection_data_get_selection(selection_data)
+	    == clip_plus.gtk_sel_atom)
+	cbd = &clip_plus;
+    else
+	cbd = &clip_star;
+
+    if (!cbd->owned)
+	return;			// Shouldn't ever happen
+
+    if (info != (guint)TARGET_STRING
+	    && (!clip_html || info != (guint)TARGET_HTML)
+	    && info != (guint)TARGET_UTF8_STRING
+	    && info != (guint)TARGET_VIMENC
+	    && info != (guint)TARGET_VIM
+	    && info != (guint)TARGET_COMPOUND_TEXT
+	    && info != (guint)TARGET_TEXT)
+	return;
+
+    // get the selection from the '*'/'+' register
+    clip_get_selection(cbd);
+
+    motion_type = clip_convert_selection(&string, &tmplen, cbd);
+    if (motion_type < 0 || string == NULL)
+	return;
+    // Due to int arguments we can't handle more than G_MAXINT.  Also
+    // reserve one extra byte for NUL or the motion type; just in case.
+    // (Not that pasting 2G of text is ever going to work, but... ;-)
+    length = MIN(tmplen, (long_u)(G_MAXINT - 1));
+
+    if (info == (guint)TARGET_VIM)
+    {
+	tmpbuf = alloc(length + 1);
+	if (tmpbuf != NULL)
+	{
+	    tmpbuf[0] = motion_type;
+	    mch_memmove(tmpbuf + 1, string, (size_t)length);
+	}
+	// For our own format, the first byte contains the motion type
+	++length;
+	vim_free(string);
+	string = tmpbuf;
+	type = vim_atom;
+    }
+
+    else if (info == (guint)TARGET_HTML)
+    {
+	vimconv_T conv;
+
+	// Since we get utf-16, we probably should set it as well.
+	conv.vc_type = CONV_NONE;
+	convert_setup_ext(&conv, p_enc, TRUE, (char_u *)"utf-16le", FALSE);
+	if (conv.vc_type != CONV_NONE)
+	{
+	    tmpbuf = string_convert(&conv, string, &length);
+	    convert_setup(&conv, NULL, NULL);
+	    vim_free(string);
+	    string = tmpbuf;
+	}
+
+	// Prepend the BOM: "fffe"
+	if (string != NULL)
+	{
+	    tmpbuf = alloc(length + 2);
+	    if (tmpbuf != NULL)
+	    {
+		tmpbuf[0] = 0xff;
+		tmpbuf[1] = 0xfe;
+		mch_memmove(tmpbuf + 2, string, (size_t)length);
+		vim_free(string);
+		string = tmpbuf;
+		length += 2;
+	    }
+
+#if !GTK_CHECK_VERSION(3,0,0)
+	    // Looks redundant even for GTK2 because these values are
+	    // overwritten by gtk_selection_data_set() that follows.
+	    selection_data->type = selection_data->target;
+	    selection_data->format = 16;	// 16 bits per char
+#endif
+	    gtk_selection_data_set(selection_data, html_atom, 16,
+							      string, length);
+	    vim_free(string);
+	}
+	return;
+    }
+    else if (info == (guint)TARGET_VIMENC)
+    {
+	int l = STRLEN(p_enc);
+
+	// contents: motion_type 'encoding' NUL text
+	tmpbuf = alloc(length + l + 2);
+	if (tmpbuf != NULL)
+	{
+	    tmpbuf[0] = motion_type;
+	    STRCPY(tmpbuf + 1, p_enc);
+	    mch_memmove(tmpbuf + l + 2, string, (size_t)length);
+	    length += l + 2;
+	    vim_free(string);
+	    string = tmpbuf;
+	}
+	type = vimenc_atom;
+    }
+
+    // gtk_selection_data_set_text() handles everything for us.  This is
+    // so easy and simple and cool, it'd be insane not to use it.
+    else
+    {
+	if (output_conv.vc_type != CONV_NONE)
+	{
+	    tmpbuf = string_convert(&output_conv, string, &length);
+	    vim_free(string);
+	    if (tmpbuf == NULL)
+		return;
+	    string = tmpbuf;
+	}
+	// Validate the string to avoid runtime warnings
+	if (g_utf8_validate((const char *)string, (gssize)length, NULL))
+	{
+	    gtk_selection_data_set_text(selection_data,
+					(const char *)string, length);
+	}
+	vim_free(string);
+	return;
+    }
+
+    if (string != NULL)
+    {
+#if !GTK_CHECK_VERSION(3,0,0)
+	// Looks redundant even for GTK2 because these values are
+	// overwritten by gtk_selection_data_set() that follows.
+	selection_data->type = selection_data->target;
+	selection_data->format = 8;	// 8 bits per char
+#endif
+	gtk_selection_data_set(selection_data, type, 8, string, length);
+	vim_free(string);
+    }
+}
+
+/*
+ * Check if the GUI can be started.  Called before gvimrc is sourced and
+ * before fork().
+ * Return OK or FAIL.
+ */
+    int
+gui_mch_early_init_check(int give_message)
+{
+    char_u *p;
+
+    // Guess that when $DISPLAY isn't set the GUI can't start.
+    p = mch_getenv((char_u *)"DISPLAY");
+    if (p == NULL || *p == NUL)
+    {
+	gui.dying = TRUE;
+	if (give_message)
+	    emsg(_((char *)e_cannot_open_display));
+	return FAIL;
+    }
+    return OK;
+}
+
+/*
+ * Check if the GUI can be started.  Called before gvimrc is sourced but after
+ * fork().
+ * Return OK or FAIL.
+ */
+    int
+gui_mch_init_check(void)
+{
+#ifdef USE_GRESOURCE
+    static int res_registered = FALSE;
+
+    if (!res_registered)
+    {
+	// Call this function in the GUI process; otherwise, the resources
+	// won't be available.  Don't call it twice.
+	res_registered = TRUE;
+	gui_gtk_register_resource();
+    }
+#endif
+
+#if GTK_CHECK_VERSION(3,10,0)
+    // Vim currently assumes that Gtk means X11, so it cannot use native Gtk
+    // support for other backends such as Wayland.
+    gdk_set_allowed_backends ("x11");
+#endif
+
+#ifdef FEAT_GUI_GNOME
+    if (gtk_socket_id == 0)
+	using_gnome = 1;
+#endif
+
+    // This defaults to argv[0], but we want it to match the name of the
+    // shipped gvim.desktop so that Vim's windows can be associated with this
+    // file.
+    g_set_prgname("gvim");
+
+    // Don't use gtk_init() or gnome_init(), it exits on failure.
+    if (!gtk_init_check(&gui_argc, &gui_argv))
+    {
+	gui.dying = TRUE;
+	emsg(_((char *)e_cannot_open_display));
+	return FAIL;
+    }
+
+    return OK;
+}
+
+/////////////////////////////////////////////////////////////////////////////
+// Mouse handling callbacks
+
+
+static guint mouse_click_timer = 0;
+static int mouse_timed_out = TRUE;
+
+/*
+ * Timer used to recognize multiple clicks of the mouse button
+ */
+    static timeout_cb_type
+mouse_click_timer_cb(gpointer data)
+{
+    // we don't use this information currently
+    int *timed_out = (int *) data;
+
+    *timed_out = TRUE;
+    return FALSE;		// don't happen again
+}
+
+static guint		motion_repeat_timer  = 0;
+static int		motion_repeat_offset = FALSE;
+static timeout_cb_type	motion_repeat_timer_cb(gpointer);
+
+    static void
+process_motion_notify(int x, int y, GdkModifierType state)
+{
+    int	    button;
+    int_u   vim_modifiers;
+    GtkAllocation allocation;
+
+    // Need to add GDK_BUTTON1_MASK state when dragging a touch.
+    state |= dragging_button_state;
+
+    button = (state & (GDK_BUTTON1_MASK | GDK_BUTTON2_MASK |
+		       GDK_BUTTON3_MASK | GDK_BUTTON4_MASK |
+		       GDK_BUTTON5_MASK))
+	      ? MOUSE_DRAG : ' ';
+
+    // If our pointer is currently hidden, then we should show it.
+    gui_mch_mousehide(FALSE);
+
+    // Just moving the rodent above the drawing area without any button
+    // being pressed.
+    if (button != MOUSE_DRAG)
+    {
+	gui_mouse_moved(x, y);
+	return;
+    }
+
+    // translate modifier coding between the main engine and GTK
+    vim_modifiers = modifiers_gdk2mouse(state);
+
+    // inform the editor engine about the occurrence of this event
+    gui_send_mouse_event(button, x, y, FALSE, vim_modifiers);
+
+    /*
+     * Auto repeat timer handling.
+     */
+    gtk_widget_get_allocation(gui.drawarea, &allocation);
+
+    if (x < 0 || y < 0
+	    || x >= allocation.width
+	    || y >= allocation.height)
+    {
+
+	int dx;
+	int dy;
+	int offshoot;
+	int delay = 10;
+
+	// Calculate the maximal distance of the cursor from the drawing area.
+	// (offshoot can't become negative here!).
+	dx = x < 0 ? -x : x - allocation.width;
+	dy = y < 0 ? -y : y - allocation.height;
+
+	offshoot = dx > dy ? dx : dy;
+
+	// Make a linearly decaying timer delay with a threshold of 5 at a
+	// distance of 127 pixels from the main window.
+	//
+	// One could think endlessly about the most ergonomic variant here.
+	// For example it could make sense to calculate the distance from the
+	// drags start instead...
+	//
+	// Maybe a parabolic interpolation would suite us better here too...
+	if (offshoot > 127)
+	{
+	    // 5 appears to be somehow near to my perceptual limits :-).
+	    delay = 5;
+	}
+	else
+	{
+	    delay = (130 * (127 - offshoot)) / 127 + 5;
+	}
+
+	// shoot again
+	if (!motion_repeat_timer)
+	    motion_repeat_timer = timeout_add(delay, motion_repeat_timer_cb,
+									 NULL);
+    }
+}
+
+#if GTK_CHECK_VERSION(3,0,0)
+    static GdkDevice *
+gui_gtk_get_pointer_device(GtkWidget *widget)
+{
+    GdkWindow * const win = gtk_widget_get_window(widget);
+    GdkDisplay * const dpy = gdk_window_get_display(win);
+# if GTK_CHECK_VERSION(3,20,0)
+    GdkSeat * const seat = gdk_display_get_default_seat(dpy);
+    return gdk_seat_get_pointer(seat);
+# else
+    GdkDeviceManager * const mngr = gdk_display_get_device_manager(dpy);
+    return gdk_device_manager_get_client_pointer(mngr);
+# endif
+}
+
+    static GdkWindow *
+gui_gtk_get_pointer(GtkWidget       *widget,
+		    gint	    *x,
+		    gint	    *y,
+		    GdkModifierType *state)
+{
+    GdkWindow * const win = gtk_widget_get_window(widget);
+    GdkDevice * const dev = gui_gtk_get_pointer_device(widget);
+    return gdk_window_get_device_position(win, dev , x, y, state);
+}
+
+# if defined(FEAT_GUI_TABLINE) || defined(PROTO)
+    static GdkWindow *
+gui_gtk_window_at_position(GtkWidget *widget,
+			   gint      *x,
+			   gint      *y)
+{
+    GdkDevice * const dev = gui_gtk_get_pointer_device(widget);
+    return gdk_device_get_window_at_position(dev, x, y);
+}
+# endif
+#else // !GTK_CHECK_VERSION(3,0,0)
+# define gui_gtk_get_pointer(wid, x, y, s) \
+    gdk_window_get_pointer((wid)->window, x, y, s)
+# define gui_gtk_window_at_position(wid, x, y)	gdk_window_at_pointer(x, y)
+#endif
+
+/*
+ * Timer used to recognize multiple clicks of the mouse button.
+ */
+    static timeout_cb_type
+motion_repeat_timer_cb(gpointer data UNUSED)
+{
+    int		    x;
+    int		    y;
+    GdkModifierType state;
+
+    gui_gtk_get_pointer(gui.drawarea, &x, &y, &state);
+
+    if (!(state & (GDK_BUTTON1_MASK | GDK_BUTTON2_MASK |
+		   GDK_BUTTON3_MASK | GDK_BUTTON4_MASK |
+		   GDK_BUTTON5_MASK)))
+    {
+	motion_repeat_timer = 0;
+	return FALSE;
+    }
+
+    // If there already is a mouse click in the input buffer, wait another
+    // time (otherwise we would create a backlog of clicks)
+    if (vim_used_in_input_buf() > 10)
+	return TRUE;
+
+    motion_repeat_timer = 0;
+
+    /*
+     * Fake a motion event.
+     * Trick: Pretend the mouse moved to the next character on every other
+     * event, otherwise drag events will be discarded, because they are still
+     * in the same character.
+     */
+    if (motion_repeat_offset)
+	x += gui.char_width;
+
+    motion_repeat_offset = !motion_repeat_offset;
+    process_motion_notify(x, y, state);
+
+    // Don't happen again.  We will get reinstalled in the synthetic event
+    // if needed -- thus repeating should still work.
+    return FALSE;
+}
+
+    static gint
+motion_notify_event(GtkWidget *widget,
+		    GdkEventMotion *event,
+		    gpointer data UNUSED)
+{
+    if (event->is_hint)
+    {
+	int		x;
+	int		y;
+	GdkModifierType	state;
+
+	gui_gtk_get_pointer(widget, &x, &y, &state);
+	process_motion_notify(x, y, state);
+    }
+    else
+    {
+	process_motion_notify((int)event->x, (int)event->y,
+			      (GdkModifierType)event->state);
+    }
+
+    return TRUE; // handled
+}
+
+
+/*
+ * Mouse button handling.  Note please that we are capturing multiple click's
+ * by our own timeout mechanism instead of the one provided by GTK+ itself.
+ * This is due to the way the generic VIM code is recognizing multiple clicks.
+ */
+    static gint
+button_press_event(GtkWidget *widget,
+		   GdkEventButton *event,
+		   gpointer data UNUSED)
+{
+    int button;
+    int repeated_click = FALSE;
+    int x, y;
+    int_u vim_modifiers;
+
+    gui.event_time = event->time;
+
+    // Make sure we have focus now we've been selected
+    if (gtk_socket_id != 0 && !gtk_widget_has_focus(widget))
+	gtk_widget_grab_focus(widget);
+
+    /*
+     * Don't let additional events about multiple clicks send by GTK to us
+     * after the initial button press event confuse us.
+     */
+    if (event->type != GDK_BUTTON_PRESS)
+	return FALSE;
+
+    x = event->x;
+    y = event->y;
+
+    // Handle multiple clicks
+    if (!mouse_timed_out && mouse_click_timer)
+    {
+	timeout_remove(mouse_click_timer);
+	mouse_click_timer = 0;
+	repeated_click = TRUE;
+    }
+
+    mouse_timed_out = FALSE;
+    mouse_click_timer = timeout_add(p_mouset, mouse_click_timer_cb,
+							     &mouse_timed_out);
+
+    switch (event->button)
+    {
+	// Keep in sync with gui_x11.c.
+	// Buttons 4-7 are handled in scroll_event()
+	case 1:
+		button = MOUSE_LEFT;
+		// needed for touch-drag
+		dragging_button_state |= GDK_BUTTON1_MASK;
+		break;
+	case 2: button = MOUSE_MIDDLE; break;
+	case 3: button = MOUSE_RIGHT; break;
+	case 8: button = MOUSE_X1; break;
+	case 9: button = MOUSE_X2; break;
+	default:
+	    return FALSE;		// Unknown button
+    }
+
+#ifdef FEAT_XIM
+    // cancel any preediting
+    if (im_is_preediting())
+	xim_reset();
+#endif
+
+    vim_modifiers = modifiers_gdk2mouse(event->state);
+
+    gui_send_mouse_event(button, x, y, repeated_click, vim_modifiers);
+
+    return TRUE;
+}
+
+/*
+ * GTK+ 2 abstracts scrolling via the GdkEventScroll.
+ */
+    static gboolean
+scroll_event(GtkWidget *widget,
+	     GdkEventScroll *event,
+	     gpointer data UNUSED)
+{
+    int	    button;
+    int_u   vim_modifiers;
+
+    if (gtk_socket_id != 0 && !gtk_widget_has_focus(widget))
+	gtk_widget_grab_focus(widget);
+
+    switch (event->direction)
+    {
+	case GDK_SCROLL_UP:
+	    button = MOUSE_4;
+	    break;
+	case GDK_SCROLL_DOWN:
+	    button = MOUSE_5;
+	    break;
+	case GDK_SCROLL_LEFT:
+	    button = MOUSE_7;
+	    break;
+	case GDK_SCROLL_RIGHT:
+	    button = MOUSE_6;
+	    break;
+	default: // This shouldn't happen
+	    return FALSE;
+    }
+
+# ifdef FEAT_XIM
+    // cancel any preediting
+    if (im_is_preediting())
+	xim_reset();
+# endif
+
+    vim_modifiers = modifiers_gdk2mouse(event->state);
+
+    gui_send_mouse_event(button, (int)event->x, (int)event->y,
+							FALSE, vim_modifiers);
+
+    return TRUE;
+}
+
+
+    static gint
+button_release_event(GtkWidget *widget UNUSED,
+		     GdkEventButton *event,
+		     gpointer data UNUSED)
+{
+    int x, y;
+    int_u vim_modifiers;
+
+    gui.event_time = event->time;
+
+    // Remove any motion "machine gun" timers used for automatic further
+    // extension of allocation areas if outside of the applications window
+    // area .
+    if (motion_repeat_timer)
+    {
+	timeout_remove(motion_repeat_timer);
+	motion_repeat_timer = 0;
+    }
+
+    x = event->x;
+    y = event->y;
+
+    vim_modifiers = modifiers_gdk2mouse(event->state);
+
+    gui_send_mouse_event(MOUSE_RELEASE, x, y, FALSE, vim_modifiers);
+
+    switch (event->button)
+    {
+	case 1:  // MOUSE_LEFT
+	    dragging_button_state = 0;
+	    break;
+    }
+
+    return TRUE;
+}
+
+
+#ifdef FEAT_DND
+/////////////////////////////////////////////////////////////////////////////
+// Drag aNd Drop support handlers.
+
+/*
+ * Count how many items there may be and separate them with a NUL.
+ * Apparently the items are separated with \r\n.  This is not documented,
+ * thus be careful not to go past the end.	Also allow separation with
+ * NUL characters.
+ */
+    static int
+count_and_decode_uri_list(char_u *out, char_u *raw, int len)
+{
+    int		i;
+    char_u	*p = out;
+    int		count = 0;
+
+    for (i = 0; i < len; ++i)
+    {
+	if (raw[i] == NUL || raw[i] == '\n' || raw[i] == '\r')
+	{
+	    if (p > out && p[-1] != NUL)
+	    {
+		++count;
+		*p++ = NUL;
+	    }
+	}
+	else if (raw[i] == '%' && i + 2 < len && hexhex2nr(raw + i + 1) > 0)
+	{
+	    *p++ = hexhex2nr(raw + i + 1);
+	    i += 2;
+	}
+	else
+	    *p++ = raw[i];
+    }
+    if (p > out && p[-1] != NUL)
+    {
+	*p = NUL;	// last item didn't have \r or \n
+	++count;
+    }
+    return count;
+}
+
+/*
+ * Parse NUL separated "src" strings.  Make it an array "outlist" form.  On
+ * this process, URI which protocol is not "file:" are removed.  Return
+ * length of array (less than "max").
+ */
+    static int
+filter_uri_list(char_u **outlist, int max, char_u *src)
+{
+    int	i, j;
+
+    for (i = j = 0; i < max; ++i)
+    {
+	outlist[i] = NULL;
+	if (STRNCMP(src, "file:", 5) == 0)
+	{
+	    src += 5;
+	    if (STRNCMP(src, "//localhost", 11) == 0)
+		src += 11;
+	    while (src[0] == '/' && src[1] == '/')
+		++src;
+	    outlist[j++] = vim_strsave(src);
+	}
+	src += STRLEN(src) + 1;
+    }
+    return j;
+}
+
+    static char_u **
+parse_uri_list(int *count, char_u *data, int len)
+{
+    int	    n	    = 0;
+    char_u  *tmp    = NULL;
+    char_u  **array = NULL;
+
+    if (data != NULL && len > 0 && (tmp = alloc(len + 1)) != NULL)
+    {
+	n = count_and_decode_uri_list(tmp, data, len);
+	if (n > 0 && (array = ALLOC_MULT(char_u *, n)) != NULL)
+	    n = filter_uri_list(array, n, tmp);
+    }
+    vim_free(tmp);
+    *count = n;
+    return array;
+}
+
+    static void
+drag_handle_uri_list(GdkDragContext	*context,
+		     GtkSelectionData	*data,
+		     guint		time_,
+		     GdkModifierType	state,
+		     gint		x,
+		     gint		y)
+{
+    char_u  **fnames;
+    int	    nfiles = 0;
+
+    fnames = parse_uri_list(&nfiles,
+	    (char_u *)gtk_selection_data_get_data(data),
+	    gtk_selection_data_get_length(data));
+
+    if (fnames != NULL && nfiles > 0)
+    {
+	int_u   modifiers;
+
+	gtk_drag_finish(context, TRUE, FALSE, time_); // accept
+
+	modifiers = modifiers_gdk2mouse(state);
+
+	gui_handle_drop(x, y, modifiers, fnames, nfiles);
+    }
+    else
+	vim_free(fnames);
+}
+
+    static void
+drag_handle_text(GdkDragContext	    *context,
+		 GtkSelectionData   *data,
+		 guint		    time_,
+		 GdkModifierType    state)
+{
+    char_u  dropkey[6] = {CSI, KS_MODIFIER, 0, CSI, KS_EXTRA, (char_u)KE_DROP};
+    char_u  *text;
+    int	    len;
+    char_u  *tmpbuf = NULL;
+
+    text = (char_u *)gtk_selection_data_get_data(data);
+    len = gtk_selection_data_get_length(data);
+
+    if (gtk_selection_data_get_data_type(data) == utf8_string_atom)
+    {
+	if (input_conv.vc_type != CONV_NONE)
+	    tmpbuf = string_convert(&input_conv, text, &len);
+	if (tmpbuf != NULL)
+	    text = tmpbuf;
+    }
+
+    dnd_yank_drag_data(text, (long)len);
+    gtk_drag_finish(context, TRUE, FALSE, time_); // accept
+    vim_free(tmpbuf);
+
+    dropkey[2] = modifiers_gdk2vim(state);
+
+    if (dropkey[2] != 0)
+	add_to_input_buf(dropkey, (int)sizeof(dropkey));
+    else
+	add_to_input_buf(dropkey + 3, (int)(sizeof(dropkey) - 3));
+}
+
+/*
+ * DND receiver.
+ */
+    static void
+drag_data_received_cb(GtkWidget		*widget,
+		      GdkDragContext	*context,
+		      gint		x,
+		      gint		y,
+		      GtkSelectionData	*data,
+		      guint		info,
+		      guint		time_,
+		      gpointer		user_data UNUSED)
+{
+    GdkModifierType state;
+
+    // Guard against trash
+    const guchar * const data_data = gtk_selection_data_get_data(data);
+    const gint data_length = gtk_selection_data_get_length(data);
+    const gint data_format = gtk_selection_data_get_format(data);
+
+    if (data_data == NULL
+	    || data_length <= 0
+	    || data_format != 8
+	    || data_data[data_length] != '\0')
+    {
+	gtk_drag_finish(context, FALSE, FALSE, time_);
+	return;
+    }
+
+    // Get the current modifier state for proper distinguishment between
+    // different operations later.
+    gui_gtk_get_pointer(widget, NULL, NULL, &state);
+
+    // Not sure about the role of "text/plain" here...
+    if (info == (guint)TARGET_TEXT_URI_LIST)
+	drag_handle_uri_list(context, data, time_, state, x, y);
+    else
+	drag_handle_text(context, data, time_, state);
+
+}
+#endif // FEAT_DND
+
+
+#if defined(USE_GNOME_SESSION)
+/*
+ * GnomeClient interact callback.  Check for unsaved buffers that cannot
+ * be abandoned and pop up a dialog asking the user for confirmation if
+ * necessary.
+ */
+    static void
+sm_client_check_changed_any(GnomeClient	    *client UNUSED,
+			    gint	    key,
+			    GnomeDialogType type UNUSED,
+			    gpointer	    data UNUSED)
+{
+    cmdmod_T	save_cmdmod;
+    gboolean	shutdown_cancelled;
+
+    save_cmdmod = cmdmod;
+
+# ifdef FEAT_BROWSE
+    cmdmod.cmod_flags |= CMOD_BROWSE;
+# endif
+# if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)
+    cmdmod.cmod_flags |= CMOD_CONFIRM;
+# endif
+    /*
+     * If there are changed buffers, present the user with
+     * a dialog if possible, otherwise give an error message.
+     */
+    shutdown_cancelled = check_changed_any(FALSE, FALSE);
+
+    exiting = FALSE;
+    cmdmod = save_cmdmod;
+    setcursor(); // position the cursor
+    out_flush();
+    /*
+     * If the user hit the [Cancel] button the whole shutdown
+     * will be cancelled.  Wow, quite powerful feature (:
+     */
+    gnome_interaction_key_return(key, shutdown_cancelled);
+}
+
+/*
+ * "save_yourself" signal handler.  Initiate an interaction to ask the user
+ * for confirmation if necessary.  Save the current editing session and tell
+ * the session manager how to restart Vim.
+ */
+    static gboolean
+sm_client_save_yourself(GnomeClient	    *client,
+			gint		    phase UNUSED,
+			GnomeSaveStyle	    save_style UNUSED,
+			gboolean	    shutdown UNUSED,
+			GnomeInteractStyle  interact_style,
+			gboolean	    fast UNUSED,
+			gpointer	    data UNUSED)
+{
+    static const char	suffix[] = "-session.vim";
+    char		*session_file;
+    unsigned int	len;
+    gboolean		success;
+
+    // Always request an interaction if possible.  check_changed_any()
+    // won't actually show a dialog unless any buffers have been modified.
+    // There doesn't seem to be an obvious way to check that without
+    // automatically firing the dialog.  Anyway, it works just fine.
+    if (interact_style == GNOME_INTERACT_ANY)
+	gnome_client_request_interaction(client, GNOME_DIALOG_NORMAL,
+					 &sm_client_check_changed_any,
+					 NULL);
+    out_flush();
+    ml_sync_all(FALSE, FALSE); // preserve all swap files
+
+    // The path is unique for each session save.  We do neither know nor care
+    // which session script will actually be used later.  This decision is in
+    // the domain of the session manager.
+    session_file = gnome_config_get_real_path(
+			gnome_client_get_config_prefix(client));
+    len = strlen(session_file);
+
+    if (len > 0 && session_file[len-1] == G_DIR_SEPARATOR)
+	--len; // get rid of the superfluous trailing '/'
+
+    session_file = g_renew(char, session_file, len + sizeof(suffix));
+    memcpy(session_file + len, suffix, sizeof(suffix));
+
+    success = write_session_file((char_u *)session_file);
+
+    if (success)
+    {
+	const char  *argv[8];
+	int	    i;
+
+	// Tell the session manager how to wipe out the stored session data.
+	// This isn't as dangerous as it looks, don't worry :)	session_file
+	// is a unique absolute filename.  Usually it'll be something like
+	// `/home/user/.gnome2/vim-XXXXXX-session.vim'.
+	i = 0;
+	argv[i++] = "rm";
+	argv[i++] = session_file;
+	argv[i] = NULL;
+
+	gnome_client_set_discard_command(client, i, (char **)argv);
+
+	// Tell the session manager how to restore the just saved session.
+	// This is easily done thanks to Vim's -S option.  Pass the -f flag
+	// since there's no need to fork -- it might even cause confusion.
+	// Also pass the window role to give the WM something to match on.
+	// The role is set in gui_mch_open(), thus should _never_ be NULL.
+	i = 0;
+	argv[i++] = restart_command;
+	argv[i++] = "-f";
+	argv[i++] = "-g";
+	argv[i++] = "--role";
+	argv[i++] = gtk_window_get_role(GTK_WINDOW(gui.mainwin));
+	argv[i++] = "-S";
+	argv[i++] = session_file;
+	argv[i] = NULL;
+
+	gnome_client_set_restart_command(client, i, (char **)argv);
+	gnome_client_set_clone_command(client, 0, NULL);
+    }
+
+    g_free(session_file);
+
+    return success;
+}
+
+/*
+ * Called when the session manager wants us to die.  There isn't much to save
+ * here since "save_yourself" has been emitted before (unless serious trouble
+ * is happening).
+ */
+    static void
+sm_client_die(GnomeClient *client UNUSED, gpointer data UNUSED)
+{
+    // Don't write messages to the GUI anymore
+    full_screen = FALSE;
+
+    vim_strncpy(IObuff, (char_u *)
+		    _("Vim: Received \"die\" request from session manager\n"),
+		    IOSIZE - 1);
+    preserve_exit();
+}
+
+/*
+ * Connect our signal handlers to be notified on session save and shutdown.
+ */
+    static void
+setup_save_yourself(void)
+{
+    GnomeClient *client;
+
+    client = gnome_master_client();
+    if (client == NULL)
+	return;
+
+    // Must use the deprecated gtk_signal_connect() for compatibility
+    // with GNOME 1.  Arrgh, zombies!
+    gtk_signal_connect(GTK_OBJECT(client), "save_yourself",
+	    GTK_SIGNAL_FUNC(&sm_client_save_yourself), NULL);
+    gtk_signal_connect(GTK_OBJECT(client), "die",
+	    GTK_SIGNAL_FUNC(&sm_client_die), NULL);
+}
+
+#else // !USE_GNOME_SESSION
+
+# ifdef USE_XSMP
+/*
+ * GTK tells us that XSMP needs attention
+ */
+    static gboolean
+local_xsmp_handle_requests(
+    GIOChannel		*source UNUSED,
+    GIOCondition	condition,
+    gpointer		data)
+{
+    if (condition == G_IO_IN)
+    {
+	// Do stuff; maybe close connection
+	if (xsmp_handle_requests() == FAIL)
+	    g_io_channel_unref((GIOChannel *)data);
+	return TRUE;
+    }
+    // Error
+    g_io_channel_unref((GIOChannel *)data);
+    xsmp_close();
+    return TRUE;
+}
+# endif // USE_XSMP
+
+/*
+ * Setup the WM_PROTOCOLS to indicate we want the WM_SAVE_YOURSELF event.
+ * This is an ugly use of X functions.	GTK doesn't offer an alternative.
+ */
+    static void
+setup_save_yourself(void)
+{
+    Atom    *existing_atoms = NULL;
+    int	    count = 0;
+
+# ifdef USE_XSMP
+    if (xsmp_icefd != -1)
+    {
+	/*
+	 * Use XSMP is preference to legacy WM_SAVE_YOURSELF;
+	 * set up GTK IO monitor
+	 */
+	GIOChannel *g_io = g_io_channel_unix_new(xsmp_icefd);
+
+	g_io_add_watch(g_io, G_IO_IN | G_IO_ERR | G_IO_HUP,
+				  local_xsmp_handle_requests, (gpointer)g_io);
+	g_io_channel_unref(g_io);
+    }
+    else
+# endif
+    {
+	// Fall back to old method
+
+	// first get the existing value
+	GdkWindow * const mainwin_win = gtk_widget_get_window(gui.mainwin);
+
+	if (XGetWMProtocols(GDK_WINDOW_XDISPLAY(mainwin_win),
+		    GDK_WINDOW_XID(mainwin_win),
+		    &existing_atoms, &count))
+	{
+	    Atom	*new_atoms;
+	    Atom	save_yourself_xatom;
+	    int	i;
+
+	    save_yourself_xatom = GET_X_ATOM(save_yourself_atom);
+
+	    // check if WM_SAVE_YOURSELF isn't there yet
+	    for (i = 0; i < count; ++i)
+		if (existing_atoms[i] == save_yourself_xatom)
+		    break;
+
+	    if (i == count)
+	    {
+		// allocate an Atoms array which is one item longer
+		new_atoms = ALLOC_MULT(Atom, count + 1);
+		if (new_atoms != NULL)
+		{
+		    memcpy(new_atoms, existing_atoms, count * sizeof(Atom));
+		    new_atoms[count] = save_yourself_xatom;
+		    XSetWMProtocols(GDK_WINDOW_XDISPLAY(mainwin_win),
+			    GDK_WINDOW_XID(mainwin_win),
+			    new_atoms, count + 1);
+		    vim_free(new_atoms);
+		}
+	    }
+	    XFree(existing_atoms);
+	}
+    }
+}
+
+/*
+ * Installing a global event filter seems to be the only way to catch
+ * client messages of type WM_PROTOCOLS without overriding GDK's own
+ * client message event filter.  Well, that's still better than trying
+ * to guess what the GDK filter had done if it had been invoked instead
+ *
+ * GTK2_FIXME:	This doesn't seem to work.  For some reason we never
+ * receive WM_SAVE_YOURSELF even though everything is set up correctly.
+ * I have the nasty feeling modern session managers just don't send this
+ * deprecated message anymore.	Addition: confirmed by several people.
+ *
+ * The GNOME session support is much cooler anyway.  Unlike this ugly
+ * WM_SAVE_YOURSELF hack it actually stores the session...  And yes,
+ * it should work with KDE as well.
+ */
+    static GdkFilterReturn
+global_event_filter(GdkXEvent *xev,
+		    GdkEvent *event UNUSED,
+		    gpointer data UNUSED)
+{
+    XEvent *xevent = (XEvent *)xev;
+
+    if (xevent != NULL
+	    && xevent->type == ClientMessage
+	    && xevent->xclient.message_type == GET_X_ATOM(wm_protocols_atom)
+	    && (long_u)xevent->xclient.data.l[0]
+					    == GET_X_ATOM(save_yourself_atom))
+    {
+	out_flush();
+	ml_sync_all(FALSE, FALSE); // preserve all swap files
+	/*
+	 * Set the window's WM_COMMAND property, to let the window manager
+	 * know we are done saving ourselves.  We don't want to be
+	 * restarted, thus set argv to NULL.
+	 */
+	XSetCommand(GDK_WINDOW_XDISPLAY(gtk_widget_get_window(gui.mainwin)),
+		    GDK_WINDOW_XID(gtk_widget_get_window(gui.mainwin)),
+		    NULL, 0);
+	return GDK_FILTER_REMOVE;
+    }
+
+    return GDK_FILTER_CONTINUE;
+}
+#endif // !USE_GNOME_SESSION
+
+
+/*
+ * Setup the window icon & xcmdsrv comm after the main window has been realized.
+ */
+    static void
+mainwin_realize(GtkWidget *widget UNUSED, gpointer data UNUSED)
+{
+// If you get an error message here, you still need to unpack the runtime
+// archive!
+#ifdef magick
+# undef magick
+#endif
+  // A bit hackish, but avoids casting later and allows optimization
+# define static static const
+#define magick vim32x32
+#include "../runtime/vim32x32.xpm"
+#undef magick
+#define magick vim16x16
+#include "../runtime/vim16x16.xpm"
+#undef magick
+#define magick vim48x48
+#include "../runtime/vim48x48.xpm"
+#undef magick
+# undef static
+
+    GdkWindow * const mainwin_win = gtk_widget_get_window(gui.mainwin);
+
+    // When started with "--echo-wid" argument, write window ID on stdout.
+    if (echo_wid_arg)
+    {
+	printf("WID: %ld\n", (long)GDK_WINDOW_XID(mainwin_win));
+	fflush(stdout);
+    }
+
+    if (vim_strchr(p_go, GO_ICON) != NULL)
+    {
+	/*
+	 * Add an icon to the main window. For fun and convenience of the user.
+	 */
+	GList *icons = NULL;
+
+	icons = g_list_prepend(icons, gdk_pixbuf_new_from_xpm_data(vim16x16));
+	icons = g_list_prepend(icons, gdk_pixbuf_new_from_xpm_data(vim32x32));
+	icons = g_list_prepend(icons, gdk_pixbuf_new_from_xpm_data(vim48x48));
+
+	gtk_window_set_icon_list(GTK_WINDOW(gui.mainwin), icons);
+
+	// TODO: is this type cast OK?
+	g_list_foreach(icons, (GFunc)(void *)&g_object_unref, NULL);
+	g_list_free(icons);
+    }
+
+#if !defined(USE_GNOME_SESSION)
+    // Register a handler for WM_SAVE_YOURSELF with GDK's low-level X I/F
+    gdk_window_add_filter(NULL, &global_event_filter, NULL);
+#endif
+    // Setup to indicate to the window manager that we want to catch the
+    // WM_SAVE_YOURSELF event.	For GNOME, this connects to the session
+    // manager instead.
+#if defined(USE_GNOME_SESSION)
+    if (using_gnome)
+#endif
+	setup_save_yourself();
+
+#ifdef FEAT_CLIENTSERVER
+    if (serverName == NULL && serverDelayedStartName != NULL)
+    {
+	// This is a :gui command in a plain vim with no previous server
+	commWindow = GDK_WINDOW_XID(mainwin_win);
+
+	(void)serverRegisterName(GDK_WINDOW_XDISPLAY(mainwin_win),
+				 serverDelayedStartName);
+    }
+    else
+    {
+	/*
+	 * Cannot handle "XLib-only" windows with gtk event routines, we'll
+	 * have to change the "server" registration to that of the main window
+	 * If we have not registered a name yet, remember the window.
+	 */
+	serverChangeRegisteredWindow(GDK_WINDOW_XDISPLAY(mainwin_win),
+				     GDK_WINDOW_XID(mainwin_win));
+    }
+    gtk_widget_add_events(gui.mainwin, GDK_PROPERTY_CHANGE_MASK);
+    g_signal_connect(G_OBJECT(gui.mainwin), "property-notify-event",
+		     G_CALLBACK(property_event), NULL);
+#endif
+}
+
+    static GdkCursor *
+create_blank_pointer(void)
+{
+    GdkWindow	*root_window = NULL;
+#if GTK_CHECK_VERSION(3,0,0)
+    GdkPixbuf   *blank_mask;
+#else
+    GdkPixmap	*blank_mask;
+#endif
+    GdkCursor	*cursor;
+#if GTK_CHECK_VERSION(3,0,0)
+    GdkRGBA	color = { 0.0, 0.0, 0.0, 0.0 };
+#else
+    GdkColor	color = { 0, 0, 0, 0 };
+    char	blank_data[] = { 0x0 };
+#endif
+
+#if GTK_CHECK_VERSION(3,12,0)
+    {
+	GdkWindow * const win = gtk_widget_get_window(gui.mainwin);
+	GdkScreen * const scrn = gdk_window_get_screen(win);
+	root_window = gdk_screen_get_root_window(scrn);
+    }
+#else
+    root_window = gtk_widget_get_root_window(gui.mainwin);
+#endif
+
+    // Create a pseudo blank pointer, which is in fact one pixel by one pixel
+    // in size.
+#if GTK_CHECK_VERSION(3,0,0)
+    {
+	cairo_surface_t *surf;
+	cairo_t		*cr;
+
+	surf = cairo_image_surface_create(CAIRO_FORMAT_A1, 1, 1);
+	cr = cairo_create(surf);
+
+	cairo_set_source_rgba(cr,
+			     color.red,
+			     color.green,
+			     color.blue,
+			     color.alpha);
+	cairo_rectangle(cr, 0, 0, 1, 1);
+	cairo_fill(cr);
+	cairo_destroy(cr);
+
+	blank_mask = gdk_pixbuf_get_from_surface(surf, 0, 0, 1, 1);
+	cairo_surface_destroy(surf);
+
+	cursor = gdk_cursor_new_from_pixbuf(gdk_window_get_display(root_window),
+					    blank_mask, 0, 0);
+	g_object_unref(blank_mask);
+    }
+#else
+    blank_mask = gdk_bitmap_create_from_data(root_window, blank_data, 1, 1);
+    cursor = gdk_cursor_new_from_pixmap(blank_mask, blank_mask,
+					&color, &color, 0, 0);
+    gdk_bitmap_unref(blank_mask);
+#endif
+
+    return cursor;
+}
+
+    static void
+mainwin_screen_changed_cb(GtkWidget  *widget,
+			  GdkScreen  *previous_screen UNUSED,
+			  gpointer   data UNUSED)
+{
+    if (!gtk_widget_has_screen(widget))
+	return;
+
+    /*
+     * Recreate the invisible mouse cursor.
+     */
+    if (gui.blank_pointer != NULL)
+#if GTK_CHECK_VERSION(3,0,0)
+	g_object_unref(G_OBJECT(gui.blank_pointer));
+#else
+	gdk_cursor_unref(gui.blank_pointer);
+#endif
+
+    gui.blank_pointer = create_blank_pointer();
+
+    if (gui.pointer_hidden && gtk_widget_get_window(gui.drawarea) != NULL)
+	gdk_window_set_cursor(gtk_widget_get_window(gui.drawarea),
+		gui.blank_pointer);
+
+    /*
+     * Create a new PangoContext for this screen, and initialize it
+     * with the current font if necessary.
+     */
+    if (gui.text_context != NULL)
+	g_object_unref(gui.text_context);
+
+    gui.text_context = gtk_widget_create_pango_context(widget);
+    pango_context_set_base_dir(gui.text_context, PANGO_DIRECTION_LTR);
+
+    if (gui.norm_font != NULL)
+    {
+	gui_mch_init_font(p_guifont, FALSE);
+	gui_set_shellsize(TRUE, FALSE, RESIZE_BOTH);
+    }
+}
+
+/*
+ * After the drawing area comes up, we calculate all colors and create the
+ * dummy blank cursor.
+ *
+ * Don't try to set any VIM scrollbar sizes anywhere here. I'm relying on the
+ * fact that the main VIM engine doesn't take them into account anywhere.
+ */
+    static void
+drawarea_realize_cb(GtkWidget *widget, gpointer data UNUSED)
+{
+    GtkWidget *sbar;
+    GtkAllocation allocation;
+
+#ifdef FEAT_XIM
+    xim_init();
+#endif
+    gui_mch_new_colors();
+#if GTK_CHECK_VERSION(3,0,0)
+    gui.surface = gdk_window_create_similar_surface(
+	    gtk_widget_get_window(widget),
+	    CAIRO_CONTENT_COLOR_ALPHA,
+	    gtk_widget_get_allocated_width(widget),
+	    gtk_widget_get_allocated_height(widget));
+#else
+    gui.text_gc = gdk_gc_new(gui.drawarea->window);
+#endif
+
+    gui.blank_pointer = create_blank_pointer();
+    if (gui.pointer_hidden)
+	gdk_window_set_cursor(gtk_widget_get_window(widget), gui.blank_pointer);
+
+    // get the actual size of the scrollbars, if they are realized
+    sbar = firstwin->w_scrollbars[SBAR_LEFT].id;
+    if (!sbar || (!gui.which_scrollbars[SBAR_LEFT]
+				    && firstwin->w_scrollbars[SBAR_RIGHT].id))
+	sbar = firstwin->w_scrollbars[SBAR_RIGHT].id;
+    gtk_widget_get_allocation(sbar, &allocation);
+    if (sbar && gtk_widget_get_realized(sbar) && allocation.width)
+	gui.scrollbar_width = allocation.width;
+
+    sbar = gui.bottom_sbar.id;
+    if (sbar && gtk_widget_get_realized(sbar) && allocation.height)
+	gui.scrollbar_height = allocation.height;
+}
+
+/*
+ * Properly clean up on shutdown.
+ */
+    static void
+drawarea_unrealize_cb(GtkWidget *widget UNUSED, gpointer data UNUSED)
+{
+    // Don't write messages to the GUI anymore
+    full_screen = FALSE;
+
+#ifdef FEAT_XIM
+    im_shutdown();
+#endif
+    if (gui.ascii_glyphs != NULL)
+    {
+	pango_glyph_string_free(gui.ascii_glyphs);
+	gui.ascii_glyphs = NULL;
+    }
+    if (gui.ascii_font != NULL)
+    {
+	g_object_unref(gui.ascii_font);
+	gui.ascii_font = NULL;
+    }
+    g_object_unref(gui.text_context);
+    gui.text_context = NULL;
+
+#if GTK_CHECK_VERSION(3,0,0)
+    if (gui.surface != NULL)
+    {
+	cairo_surface_destroy(gui.surface);
+	gui.surface = NULL;
+    }
+#else
+    g_object_unref(gui.text_gc);
+    gui.text_gc = NULL;
+#endif
+
+#if GTK_CHECK_VERSION(3,0,0)
+    g_object_unref(G_OBJECT(gui.blank_pointer));
+#else
+    gdk_cursor_unref(gui.blank_pointer);
+#endif
+    gui.blank_pointer = NULL;
+}
+
+#if GTK_CHECK_VERSION(3,22,2)
+    static void
+drawarea_style_updated_cb(GtkWidget *widget UNUSED,
+			 gpointer data UNUSED)
+#else
+    static void
+drawarea_style_set_cb(GtkWidget	*widget UNUSED,
+		      GtkStyle	*previous_style UNUSED,
+		      gpointer	data UNUSED)
+#endif
+{
+    gui_mch_new_colors();
+}
+
+#if GTK_CHECK_VERSION(3,0,0)
+    static gboolean
+drawarea_configure_event_cb(GtkWidget	      *widget,
+			    GdkEventConfigure *event,
+			    gpointer	       data UNUSED)
+{
+    static int cur_width = 0;
+    static int cur_height = 0;
+
+    g_return_val_if_fail(event
+	    && event->width >= 1 && event->height >= 1, TRUE);
+
+# if GTK_CHECK_VERSION(3,22,2) && !GTK_CHECK_VERSION(3,22,4)
+    // As of 3.22.2, GdkWindows have started distributing configure events to
+    // their "native" children (https://git.gnome.org/browse/gtk+/commit/?h=gtk-3-22&id=12579fe71b3b8f79eb9c1b80e429443bcc437dd0).
+    //
+    // As can be seen from the implementation of move_native_children() and
+    // configure_native_child() in gdkwindow.c, those functions actually
+    // propagate configure events to every child, failing to distinguish
+    // "native" one from non-native one.
+    //
+    // Naturally, configure events propagated to here like that are fallacious
+    // and, as a matter of fact, they trigger a geometric collapse of
+    // gui.drawarea in fullscreen and maximized modes.
+    //
+    // To filter out such nuisance events, we are making use of the fact that
+    // the field send_event of such GdkEventConfigures is set to FALSE in
+    // configure_native_child().
+    //
+    // Obviously, this is a terrible hack making GVim depend on GTK's
+    // implementation details.  Therefore, watch out any relevant internal
+    // changes happening in GTK in the feature (sigh).
+    //
+    // Follow-up
+    // After a few weeks later, the GdkWindow change mentioned above was
+    // reverted (https://git.gnome.org/browse/gtk+/commit/?h=gtk-3-22&id=f70039cb9603a02d2369fec4038abf40a1711155).
+    // The corresponding official release is 3.22.4.
+    if (event->send_event == FALSE)
+	return TRUE;
+# endif
+
+    if (event->width == cur_width && event->height == cur_height)
+	return TRUE;
+
+    cur_width = event->width;
+    cur_height = event->height;
+
+    if (gui.surface != NULL)
+	cairo_surface_destroy(gui.surface);
+
+    gui.surface = gdk_window_create_similar_surface(
+	    gtk_widget_get_window(widget),
+	    CAIRO_CONTENT_COLOR_ALPHA,
+	    event->width, event->height);
+
+    gtk_widget_queue_draw(widget);
+
+    return TRUE;
+}
+#endif
+
+/*
+ * Callback routine for the "delete_event" signal on the toplevel window.
+ * Tries to vim gracefully, or refuses to exit with changed buffers.
+ */
+    static gint
+delete_event_cb(GtkWidget *widget UNUSED,
+		GdkEventAny *event UNUSED,
+		gpointer data UNUSED)
+{
+    gui_shell_closed();
+    return TRUE;
+}
+
+#if defined(FEAT_MENU) || defined(FEAT_TOOLBAR) || defined(FEAT_GUI_TABLINE)
+    static int
+get_item_dimensions(GtkWidget *widget, GtkOrientation orientation)
+{
+# ifdef FEAT_GUI_GNOME
+    GtkOrientation item_orientation = GTK_ORIENTATION_HORIZONTAL;
+
+    if (using_gnome && widget != NULL)
+    {
+	GtkWidget *parent;
+	BonoboDockItem *dockitem;
+
+	parent	 = gtk_widget_get_parent(widget);
+	if (G_TYPE_FROM_INSTANCE(parent) == BONOBO_TYPE_DOCK_ITEM)
+	{
+	    // Only menu & toolbar are dock items.  Could tabline be?
+	    // Seem to be only the 2 defined in GNOME
+	    widget = parent;
+	    dockitem = BONOBO_DOCK_ITEM(widget);
+
+	    if (dockitem == NULL || dockitem->is_floating)
+		return 0;
+	    item_orientation = bonobo_dock_item_get_orientation(dockitem);
+	}
+    }
+# else
+#  define item_orientation GTK_ORIENTATION_HORIZONTAL
+# endif
+
+    if (widget != NULL
+	    && item_orientation == orientation
+	    && gtk_widget_get_realized(widget)
+	    && gtk_widget_get_visible(widget))
+    {
+# if GTK_CHECK_VERSION(3,0,0) || !defined(FEAT_GUI_GNOME)
+	GtkAllocation allocation;
+
+	gtk_widget_get_allocation(widget, &allocation);
+	return allocation.height;
+# else
+	if (orientation == GTK_ORIENTATION_HORIZONTAL)
+	    return widget->allocation.height;
+	else
+	    return widget->allocation.width;
+# endif
+    }
+    return 0;
+}
+#endif
+
+    static int
+get_menu_tool_width(void)
+{
+    int width = 0;
+
+#ifdef FEAT_GUI_GNOME // these are never vertical without GNOME
+# ifdef FEAT_MENU
+    width += get_item_dimensions(gui.menubar, GTK_ORIENTATION_VERTICAL);
+# endif
+# ifdef FEAT_TOOLBAR
+    width += get_item_dimensions(gui.toolbar, GTK_ORIENTATION_VERTICAL);
+# endif
+# ifdef FEAT_GUI_TABLINE
+    if (gui.tabline != NULL)
+	width += get_item_dimensions(gui.tabline, GTK_ORIENTATION_VERTICAL);
+# endif
+#endif
+
+    return width;
+}
+
+    static int
+get_menu_tool_height(void)
+{
+    int height = 0;
+
+#ifdef FEAT_MENU
+    height += get_item_dimensions(gui.menubar, GTK_ORIENTATION_HORIZONTAL);
+#endif
+#ifdef FEAT_TOOLBAR
+    height += get_item_dimensions(gui.toolbar, GTK_ORIENTATION_HORIZONTAL);
+#endif
+#ifdef FEAT_GUI_TABLINE
+    if (gui.tabline != NULL)
+	height += get_item_dimensions(gui.tabline, GTK_ORIENTATION_HORIZONTAL);
+#endif
+
+    return height;
+}
+
+// This controls whether we can set the real window hints at
+// start-up when in a GtkPlug.
+// 0 = normal processing (default)
+// 1 = init. hints set, no-one's tried to reset since last check
+// 2 = init. hints set, attempt made to change hints
+static int init_window_hints_state = 0;
+
+    static void
+update_window_manager_hints(int force_width, int force_height)
+{
+    static int old_width  = 0;
+    static int old_height = 0;
+    static int old_min_width  = 0;
+    static int old_min_height = 0;
+    static int old_char_width  = 0;
+    static int old_char_height = 0;
+
+    int width;
+    int height;
+    int min_width;
+    int min_height;
+
+    // At start-up, don't try to set the hints until the initial
+    // values have been used (those that dictate our initial size)
+    // Let forced (i.e., correct) values through always.
+    if (!(force_width && force_height)  &&  init_window_hints_state > 0)
+    {
+	// Don't do it!
+	init_window_hints_state = 2;
+	return;
+    }
+
+    // This also needs to be done when the main window isn't there yet,
+    // otherwise the hints don't work.
+    width  = gui_get_base_width();
+    height = gui_get_base_height();
+# ifdef FEAT_MENU
+    height += tabline_height() * gui.char_height;
+# endif
+    width  += get_menu_tool_width();
+    height += get_menu_tool_height();
+
+    // GtkSockets use GtkPlug's [gui,mainwin] min-size hints to determine
+    // their actual widget size.  When we set our size ourselves (e.g.,
+    // 'set columns=' or init. -geom) we briefly set the min. to the size
+    // we wish to be instead of the legitimate minimum so that we actually
+    // resize correctly.
+    if (force_width && force_height)
+    {
+	min_width  = force_width;
+	min_height = force_height;
+    }
+    else
+    {
+	min_width  = width  + MIN_COLUMNS * gui.char_width;
+	min_height = height + MIN_LINES   * gui.char_height;
+    }
+
+    // Avoid an expose event when the size didn't change.
+    if (width != old_width
+	    || height != old_height
+	    || min_width != old_min_width
+	    || min_height != old_min_height
+	    || gui.char_width != old_char_width
+	    || gui.char_height != old_char_height)
+    {
+	GdkGeometry	geometry;
+	GdkWindowHints	geometry_mask;
+
+	geometry.width_inc   = gui.char_width;
+	geometry.height_inc  = gui.char_height;
+	geometry.base_width  = width;
+	geometry.base_height = height;
+	geometry.min_width   = min_width;
+	geometry.min_height  = min_height;
+	geometry_mask	     = GDK_HINT_BASE_SIZE|GDK_HINT_RESIZE_INC
+			       |GDK_HINT_MIN_SIZE;
+	// Using gui.formwin as geometry widget doesn't work as expected
+	// with GTK+ 2 -- dunno why.  Presumably all the resizing hacks
+	// in Vim confuse GTK+.  For GTK 3 the second argument should be NULL
+	// to make the width/height inc works, despite the docs saying
+	// something else.
+	gtk_window_set_geometry_hints(GTK_WINDOW(gui.mainwin), NULL,
+				      &geometry, geometry_mask);
+	old_width       = width;
+	old_height      = height;
+	old_min_width   = min_width;
+	old_min_height  = min_height;
+	old_char_width  = gui.char_width;
+	old_char_height = gui.char_height;
+    }
+}
+
+#if defined(FEAT_GUI_DARKTHEME) || defined(PROTO)
+    void
+gui_mch_set_dark_theme(int dark)
+{
+# if GTK_CHECK_VERSION(3,0,0)
+    GtkSettings *gtk_settings;
+
+    gtk_settings = gtk_settings_get_for_screen(gdk_screen_get_default());
+    g_object_set(gtk_settings, "gtk-application-prefer-dark-theme", (gboolean)dark, NULL);
+# endif
+}
+#endif // FEAT_GUI_DARKTHEME
+
+#ifdef FEAT_TOOLBAR
+
+/*
+ * This extra effort wouldn't be necessary if we only used stock icons in the
+ * toolbar, as we do for all builtin icons.  But user-defined toolbar icons
+ * shouldn't be treated differently, thus we do need this.
+ */
+    static void
+icon_size_changed_foreach(GtkWidget *widget, gpointer user_data)
+{
+    if (GTK_IS_IMAGE(widget))
+    {
+	GtkImage *image = (GtkImage *)widget;
+
+# if GTK_CHECK_VERSION(3,10,0)
+	if (gtk_image_get_storage_type(image) == GTK_IMAGE_ICON_NAME)
+	{
+	    const GtkIconSize icon_size = GPOINTER_TO_INT(user_data);
+	    const gchar *icon_name;
+
+	    gtk_image_get_icon_name(image, &icon_name, NULL);
+	    image = (GtkImage *)gtk_image_new_from_icon_name(
+							 icon_name, icon_size);
+	}
+# else
+	// User-defined icons are stored in a GtkIconSet
+	if (gtk_image_get_storage_type(image) == GTK_IMAGE_ICON_SET)
+	{
+	    GtkIconSet	*icon_set;
+	    GtkIconSize	icon_size;
+
+	    gtk_image_get_icon_set(image, &icon_set, &icon_size);
+	    icon_size = (GtkIconSize)(long)user_data;
+
+	    gtk_icon_set_ref(icon_set);
+	    gtk_image_set_from_icon_set(image, icon_set, icon_size);
+	    gtk_icon_set_unref(icon_set);
+	}
+# endif
+    }
+    else if (GTK_IS_CONTAINER(widget))
+    {
+	gtk_container_foreach((GtkContainer *)widget,
+			      &icon_size_changed_foreach,
+			      user_data);
+    }
+}
+
+    static void
+set_toolbar_style(GtkToolbar *toolbar)
+{
+    GtkToolbarStyle style;
+    GtkIconSize	    size;
+    GtkIconSize	    oldsize;
+
+    if ((toolbar_flags & (TOOLBAR_TEXT | TOOLBAR_ICONS | TOOLBAR_HORIZ))
+		      == (TOOLBAR_TEXT | TOOLBAR_ICONS | TOOLBAR_HORIZ))
+	style = GTK_TOOLBAR_BOTH_HORIZ;
+    else if ((toolbar_flags & (TOOLBAR_TEXT | TOOLBAR_ICONS))
+		      == (TOOLBAR_TEXT | TOOLBAR_ICONS))
+	style = GTK_TOOLBAR_BOTH;
+    else if (toolbar_flags & TOOLBAR_TEXT)
+	style = GTK_TOOLBAR_TEXT;
+    else
+	style = GTK_TOOLBAR_ICONS;
+
+    gtk_toolbar_set_style(toolbar, style);
+# if !GTK_CHECK_VERSION(3,0,0)
+    gtk_toolbar_set_tooltips(toolbar, (toolbar_flags & TOOLBAR_TOOLTIPS) != 0);
+# endif
+
+    switch (tbis_flags)
+    {
+	case TBIS_TINY:	    size = GTK_ICON_SIZE_MENU;		break;
+	case TBIS_SMALL:    size = GTK_ICON_SIZE_SMALL_TOOLBAR;	break;
+	case TBIS_MEDIUM:   size = GTK_ICON_SIZE_BUTTON;	break;
+	case TBIS_LARGE:    size = GTK_ICON_SIZE_LARGE_TOOLBAR;	break;
+	case TBIS_HUGE:     size = GTK_ICON_SIZE_DND;		break;
+	case TBIS_GIANT:    size = GTK_ICON_SIZE_DIALOG;	break;
+	default:	    size = GTK_ICON_SIZE_INVALID;	break;
+    }
+    oldsize = gtk_toolbar_get_icon_size(toolbar);
+
+    if (size == GTK_ICON_SIZE_INVALID)
+    {
+	// Let global user preferences decide the icon size.
+	gtk_toolbar_unset_icon_size(toolbar);
+	size = gtk_toolbar_get_icon_size(toolbar);
+    }
+    if (size != oldsize)
+    {
+	gtk_container_foreach(GTK_CONTAINER(toolbar),
+			      &icon_size_changed_foreach,
+			      GINT_TO_POINTER((int)size));
+    }
+    gtk_toolbar_set_icon_size(toolbar, size);
+}
+
+#endif // FEAT_TOOLBAR
+
+#if defined(FEAT_GUI_TABLINE) || defined(PROTO)
+static int ignore_tabline_evt = FALSE;
+static GtkWidget *tabline_menu;
+# if !GTK_CHECK_VERSION(3,0,0)
+static GtkTooltips *tabline_tooltip;
+# endif
+static int clicked_page;	    // page clicked in tab line
+
+/*
+ * Handle selecting an item in the tab line popup menu.
+ */
+    static void
+tabline_menu_handler(GtkMenuItem *item UNUSED, gpointer user_data)
+{
+    // Add the string cmd into input buffer
+    send_tabline_menu_event(clicked_page, (int)(long)user_data);
+}
+
+    static void
+add_tabline_menu_item(GtkWidget *menu, char_u *text, int resp)
+{
+    GtkWidget	*item;
+    char_u	*utf_text;
+
+    utf_text = CONVERT_TO_UTF8(text);
+    item = gtk_menu_item_new_with_label((const char *)utf_text);
+    gtk_widget_show(item);
+    CONVERT_TO_UTF8_FREE(utf_text);
+
+    gtk_container_add(GTK_CONTAINER(menu), item);
+    g_signal_connect(G_OBJECT(item), "activate",
+	    G_CALLBACK(tabline_menu_handler),
+	    GINT_TO_POINTER(resp));
+}
+
+/*
+ * Create a menu for the tab line.
+ */
+    static GtkWidget *
+create_tabline_menu(void)
+{
+    GtkWidget *menu;
+
+    menu = gtk_menu_new();
+    add_tabline_menu_item(menu, (char_u *)_("Close tab"), TABLINE_MENU_CLOSE);
+    add_tabline_menu_item(menu, (char_u *)_("New tab"), TABLINE_MENU_NEW);
+    add_tabline_menu_item(menu, (char_u *)_("Open Tab..."), TABLINE_MENU_OPEN);
+
+    return menu;
+}
+
+    static gboolean
+on_tabline_menu(GtkWidget *widget, GdkEvent *event)
+{
+    // Was this button press event ?
+    if (event->type == GDK_BUTTON_PRESS)
+    {
+	GdkEventButton *bevent = (GdkEventButton *)event;
+	int		x = bevent->x;
+	int		y = bevent->y;
+	GtkWidget	*tabwidget;
+	GdkWindow	*tabwin;
+
+	// When ignoring events return TRUE so that the selected page doesn't
+	// change.
+	if (hold_gui_events || cmdwin_type != 0)
+	    return TRUE;
+
+	tabwin = gui_gtk_window_at_position(gui.mainwin, &x, &y);
+
+	gdk_window_get_user_data(tabwin, (gpointer)&tabwidget);
+	clicked_page = GPOINTER_TO_INT(g_object_get_data(G_OBJECT(tabwidget),
+							 "tab_num"));
+
+	// If the event was generated for 3rd button popup the menu.
+	if (bevent->button == 3)
+	{
+# if GTK_CHECK_VERSION(3,22,2)
+	    gtk_menu_popup_at_pointer(GTK_MENU(widget), event);
+# else
+	    gtk_menu_popup(GTK_MENU(widget), NULL, NULL, NULL, NULL,
+						bevent->button, bevent->time);
+# endif
+	    // We handled the event.
+	    return TRUE;
+	}
+	else if (bevent->button == 1)
+	{
+	    if (clicked_page == 0)
+	    {
+		// Click after all tabs moves to next tab page.  When "x" is
+		// small guess it's the left button.
+		send_tabline_event(x < 50 ? -1 : 0);
+	    }
+	}
+	else if (bevent->button == 2)
+	{
+	    if (clicked_page != 0)
+		// Middle mouse click on tabpage label closes that tab.
+		send_tabline_menu_event(clicked_page, TABLINE_MENU_CLOSE);
+	}
+    }
+
+    // We didn't handle the event.
+    return FALSE;
+}
+
+/*
+ * Handle selecting one of the tabs.
+ */
+    static void
+on_select_tab(
+	GtkNotebook	*notebook UNUSED,
+	gpointer	*page UNUSED,
+	gint		idx,
+	gpointer	data UNUSED)
+{
+    if (!ignore_tabline_evt)
+	send_tabline_event(idx + 1);
+}
+
+# if GTK_CHECK_VERSION(2,10,0)
+/*
+ * Handle reordering the tabs (using D&D).
+ */
+    static void
+on_tab_reordered(
+	GtkNotebook	*notebook UNUSED,
+	gpointer	*page UNUSED,
+	gint		idx,
+	gpointer	data UNUSED)
+{
+    if (ignore_tabline_evt)
+	return;
+
+    if ((tabpage_index(curtab) - 1) < idx)
+	tabpage_move(idx + 1);
+    else
+	tabpage_move(idx);
+}
+# endif
+
+/*
+ * Show or hide the tabline.
+ */
+    void
+gui_mch_show_tabline(int showit)
+{
+    if (gui.tabline == NULL)
+	return;
+
+    if (!showit != !gtk_notebook_get_show_tabs(GTK_NOTEBOOK(gui.tabline)))
+    {
+	// Note: this may cause a resize event
+	gtk_notebook_set_show_tabs(GTK_NOTEBOOK(gui.tabline), showit);
+	update_window_manager_hints(0, 0);
+	if (showit)
+	    gtk_widget_set_can_focus(GTK_WIDGET(gui.tabline), FALSE);
+    }
+
+    gui_mch_update();
+}
+
+/*
+ * Return TRUE when tabline is displayed.
+ */
+    int
+gui_mch_showing_tabline(void)
+{
+    return gui.tabline != NULL
+		     && gtk_notebook_get_show_tabs(GTK_NOTEBOOK(gui.tabline));
+}
+
+/*
+ * Update the labels of the tabline.
+ */
+    void
+gui_mch_update_tabline(void)
+{
+    GtkWidget	    *page;
+    GtkWidget	    *event_box;
+    GtkWidget	    *label;
+    tabpage_T	    *tp;
+    int		    nr = 0;
+    int		    tab_num;
+    int		    curtabidx = 0;
+    char_u	    *labeltext;
+
+    if (gui.tabline == NULL)
+	return;
+
+    ignore_tabline_evt = TRUE;
+
+    // Add a label for each tab page.  They all contain the same text area.
+    for (tp = first_tabpage; tp != NULL; tp = tp->tp_next, ++nr)
+    {
+	if (tp == curtab)
+	    curtabidx = nr;
+
+	tab_num = nr + 1;
+
+	page = gtk_notebook_get_nth_page(GTK_NOTEBOOK(gui.tabline), nr);
+	if (page == NULL)
+	{
+	    // Add notebook page
+# if GTK_CHECK_VERSION(3,2,0)
+	    page = gtk_box_new(GTK_ORIENTATION_VERTICAL, 0);
+	    gtk_box_set_homogeneous(GTK_BOX(page), FALSE);
+# else
+	    page = gtk_vbox_new(FALSE, 0);
+# endif
+	    gtk_widget_show(page);
+	    event_box = gtk_event_box_new();
+	    gtk_widget_show(event_box);
+	    label = gtk_label_new("-Empty-");
+# if !GTK_CHECK_VERSION(3,14,0)
+	    gtk_misc_set_padding(GTK_MISC(label), 2, 2);
+# endif
+	    gtk_container_add(GTK_CONTAINER(event_box), label);
+	    gtk_widget_show(label);
+	    gtk_notebook_insert_page(GTK_NOTEBOOK(gui.tabline),
+		    page,
+		    event_box,
+		    nr++);
+# if GTK_CHECK_VERSION(2,10,0)
+	    gtk_notebook_set_tab_reorderable(GTK_NOTEBOOK(gui.tabline),
+		    page,
+		    TRUE);
+# endif
+	}
+
+	event_box = gtk_notebook_get_tab_label(GTK_NOTEBOOK(gui.tabline), page);
+	g_object_set_data(G_OBJECT(event_box), "tab_num",
+						     GINT_TO_POINTER(tab_num));
+	label = gtk_bin_get_child(GTK_BIN(event_box));
+	get_tabline_label(tp, FALSE);
+	labeltext = CONVERT_TO_UTF8(NameBuff);
+	gtk_label_set_text(GTK_LABEL(label), (const char *)labeltext);
+	CONVERT_TO_UTF8_FREE(labeltext);
+
+	get_tabline_label(tp, TRUE);
+	labeltext = CONVERT_TO_UTF8(NameBuff);
+# if GTK_CHECK_VERSION(3,0,0)
+	gtk_widget_set_tooltip_text(event_box, (const gchar *)labeltext);
+# else
+	gtk_tooltips_set_tip(GTK_TOOLTIPS(tabline_tooltip), event_box,
+			     (const char *)labeltext, NULL);
+# endif
+	CONVERT_TO_UTF8_FREE(labeltext);
+    }
+
+    // Remove any old labels.
+    while (gtk_notebook_get_nth_page(GTK_NOTEBOOK(gui.tabline), nr) != NULL)
+	gtk_notebook_remove_page(GTK_NOTEBOOK(gui.tabline), nr);
+
+    if (gtk_notebook_get_current_page(GTK_NOTEBOOK(gui.tabline)) != curtabidx)
+	gtk_notebook_set_current_page(GTK_NOTEBOOK(gui.tabline), curtabidx);
+
+    // Make sure everything is in place before drawing text.
+    gui_mch_update();
+
+    ignore_tabline_evt = FALSE;
+}
+
+/*
+ * Set the current tab to "nr".  First tab is 1.
+ */
+    void
+gui_mch_set_curtab(int nr)
+{
+    if (gui.tabline == NULL)
+	return;
+
+    ignore_tabline_evt = TRUE;
+    if (gtk_notebook_get_current_page(GTK_NOTEBOOK(gui.tabline)) != nr - 1)
+	gtk_notebook_set_current_page(GTK_NOTEBOOK(gui.tabline), nr - 1);
+    ignore_tabline_evt = FALSE;
+}
+
+#endif // FEAT_GUI_TABLINE
+
+/*
+ * Add selection targets for PRIMARY and CLIPBOARD selections.
+ */
+    void
+gui_gtk_set_selection_targets(void)
+{
+    int		    i, j = 0;
+    int		    n_targets = N_SELECTION_TARGETS;
+    GtkTargetEntry  targets[N_SELECTION_TARGETS];
+
+    for (i = 0; i < (int)N_SELECTION_TARGETS; ++i)
+    {
+	// OpenOffice tries to use TARGET_HTML and fails when we don't
+	// return something, instead of trying another target. Therefore only
+	// offer TARGET_HTML when it works.
+	if (!clip_html && selection_targets[i].info == TARGET_HTML)
+	    n_targets--;
+	else
+	    targets[j++] = selection_targets[i];
+    }
+
+    gtk_selection_clear_targets(gui.drawarea, (GdkAtom)GDK_SELECTION_PRIMARY);
+    gtk_selection_clear_targets(gui.drawarea, (GdkAtom)clip_plus.gtk_sel_atom);
+    gtk_selection_add_targets(gui.drawarea,
+			      (GdkAtom)GDK_SELECTION_PRIMARY,
+			      targets, n_targets);
+    gtk_selection_add_targets(gui.drawarea,
+			      (GdkAtom)clip_plus.gtk_sel_atom,
+			      targets, n_targets);
+}
+
+/*
+ * Set up for receiving DND items.
+ */
+    void
+gui_gtk_set_dnd_targets(void)
+{
+    int		    i, j = 0;
+    int		    n_targets = N_DND_TARGETS;
+    GtkTargetEntry  targets[N_DND_TARGETS];
+
+    for (i = 0; i < (int)N_DND_TARGETS; ++i)
+    {
+	if (!clip_html && dnd_targets[i].info == TARGET_HTML)
+	    n_targets--;
+	else
+	    targets[j++] = dnd_targets[i];
+    }
+
+    gtk_drag_dest_unset(gui.drawarea);
+    gtk_drag_dest_set(gui.drawarea,
+		      GTK_DEST_DEFAULT_ALL,
+		      targets, n_targets,
+		      GDK_ACTION_COPY | GDK_ACTION_MOVE);
+}
+
+/*
+ * Initialize the GUI.	Create all the windows, set up all the callbacks etc.
+ * Returns OK for success, FAIL when the GUI can't be started.
+ */
+    int
+gui_mch_init(void)
+{
+    GtkWidget *vbox;
+
+#ifdef FEAT_GUI_GNOME
+    // Initialize the GNOME libraries.	gnome_program_init()/gnome_init()
+    // exits on failure, but that's a non-issue because we already called
+    // gtk_init_check() in gui_mch_init_check().
+    if (using_gnome)
+    {
+	gnome_program_init(VIMPACKAGE, VIM_VERSION_SHORT,
+			   LIBGNOMEUI_MODULE, gui_argc, gui_argv, NULL);
+# if defined(LC_NUMERIC)
+	{
+	    char *p = setlocale(LC_NUMERIC, NULL);
+
+	    // Make sure strtod() uses a decimal point, not a comma. Gnome
+	    // init may change it.
+	    if (p == NULL || strcmp(p, "C") != 0)
+	       setlocale(LC_NUMERIC, "C");
+	}
+# endif
+    }
+#endif
+    VIM_CLEAR(gui_argv);
+
+#if GLIB_CHECK_VERSION(2,1,3)
+    // Set the human-readable application name
+    g_set_application_name("Vim");
+#endif
+    /*
+     * Force UTF-8 output no matter what the value of 'encoding' is.
+     * did_set_string_option() in option.c prohibits changing 'termencoding'
+     * to something else than UTF-8 if the GUI is in use.
+     */
+    set_option_value_give_err((char_u *)"termencoding",
+						     0L, (char_u *)"utf-8", 0);
+
+#ifdef FEAT_TOOLBAR
+    gui_gtk_register_stock_icons();
+#endif
+    // FIXME: Need to install the classic icons and a gtkrc.classic file.
+    // The hard part is deciding install locations and the Makefile magic.
+#if !GTK_CHECK_VERSION(3,0,0)
+# if 0
+    gtk_rc_parse("gtkrc");
+# endif
+#endif
+
+    // Initialize values
+    gui.border_width = 2;
+    gui.scrollbar_width = SB_DEFAULT_WIDTH;
+    gui.scrollbar_height = SB_DEFAULT_WIDTH;
+#if GTK_CHECK_VERSION(3,0,0)
+    gui.fgcolor = g_new(GdkRGBA, 1);
+    gui.bgcolor = g_new(GdkRGBA, 1);
+    gui.spcolor = g_new(GdkRGBA, 1);
+#else
+    // LINTED: avoid warning: conversion to 'unsigned long'
+    gui.fgcolor = g_new0(GdkColor, 1);
+    // LINTED: avoid warning: conversion to 'unsigned long'
+    gui.bgcolor = g_new0(GdkColor, 1);
+    // LINTED: avoid warning: conversion to 'unsigned long'
+    gui.spcolor = g_new0(GdkColor, 1);
+#endif
+
+    // Initialise atoms
+    html_atom = gdk_atom_intern("text/html", FALSE);
+    utf8_string_atom = gdk_atom_intern("UTF8_STRING", FALSE);
+
+    // Set default foreground and background colors.
+    gui.norm_pixel = gui.def_norm_pixel;
+    gui.back_pixel = gui.def_back_pixel;
+
+    if (gtk_socket_id != 0)
+    {
+	GtkWidget *plug;
+
+	// Use GtkSocket from another app.
+	plug = gtk_plug_new_for_display(gdk_display_get_default(),
+					gtk_socket_id);
+	if (plug != NULL && gtk_plug_get_socket_window(GTK_PLUG(plug)) != NULL)
+	{
+	    gui.mainwin = plug;
+	}
+	else
+	{
+	    g_warning("Connection to GTK+ socket (ID %u) failed",
+		      (unsigned int)gtk_socket_id);
+	    // Pretend we never wanted it if it failed (get own window)
+	    gtk_socket_id = 0;
+	}
+    }
+
+    if (gtk_socket_id == 0)
+    {
+#ifdef FEAT_GUI_GNOME
+	if (using_gnome)
+	{
+	    gui.mainwin = gnome_app_new("Vim", NULL);
+# ifdef USE_XSMP
+	    // Use the GNOME save-yourself functionality now.
+	    xsmp_close();
+# endif
+	}
+	else
+#endif
+	    gui.mainwin = gtk_window_new(GTK_WINDOW_TOPLEVEL);
+    }
+
+    gtk_widget_set_name(gui.mainwin, "vim-main-window");
+
+    // Create the PangoContext used for drawing all text.
+    gui.text_context = gtk_widget_create_pango_context(gui.mainwin);
+    pango_context_set_base_dir(gui.text_context, PANGO_DIRECTION_LTR);
+
+    gtk_container_set_border_width(GTK_CONTAINER(gui.mainwin), 0);
+    gtk_widget_add_events(gui.mainwin, GDK_VISIBILITY_NOTIFY_MASK);
+
+    g_signal_connect(G_OBJECT(gui.mainwin), "delete-event",
+		     G_CALLBACK(&delete_event_cb), NULL);
+
+    g_signal_connect(G_OBJECT(gui.mainwin), "realize",
+		     G_CALLBACK(&mainwin_realize), NULL);
+
+    g_signal_connect(G_OBJECT(gui.mainwin), "screen-changed",
+		     G_CALLBACK(&mainwin_screen_changed_cb), NULL);
+
+    gui.accel_group = gtk_accel_group_new();
+    gtk_window_add_accel_group(GTK_WINDOW(gui.mainwin), gui.accel_group);
+
+    // A vertical box holds the menubar, toolbar and main text window.
+#if GTK_CHECK_VERSION(3,2,0)
+    vbox = gtk_box_new(GTK_ORIENTATION_VERTICAL, 0);
+    gtk_box_set_homogeneous(GTK_BOX(vbox), FALSE);
+#else
+    vbox = gtk_vbox_new(FALSE, 0);
+#endif
+
+#ifdef FEAT_GUI_GNOME
+    if (using_gnome)
+    {
+# if defined(FEAT_MENU)
+	// automagically restore menubar/toolbar placement
+	gnome_app_enable_layout_config(GNOME_APP(gui.mainwin), TRUE);
+# endif
+	gnome_app_set_contents(GNOME_APP(gui.mainwin), vbox);
+    }
+    else
+#endif
+    {
+	gtk_container_add(GTK_CONTAINER(gui.mainwin), vbox);
+	gtk_widget_show(vbox);
+    }
+
+#ifdef FEAT_MENU
+    /*
+     * Create the menubar and handle
+     */
+    gui.menubar = gtk_menu_bar_new();
+    gtk_widget_set_name(gui.menubar, "vim-menubar");
+
+    // Avoid that GTK takes <F10> away from us.
+    {
+	GtkSettings *gtk_settings;
+
+	gtk_settings = gtk_settings_get_for_screen(gdk_screen_get_default());
+	g_object_set(gtk_settings, "gtk-menu-bar-accel", NULL, NULL);
+    }
+
+
+# ifdef FEAT_GUI_GNOME
+    if (using_gnome)
+    {
+	BonoboDockItem *dockitem;
+
+	gnome_app_set_menus(GNOME_APP(gui.mainwin), GTK_MENU_BAR(gui.menubar));
+	dockitem = gnome_app_get_dock_item_by_name(GNOME_APP(gui.mainwin),
+						   GNOME_APP_MENUBAR_NAME);
+	// We don't want the menu to float.
+	bonobo_dock_item_set_behavior(dockitem,
+		bonobo_dock_item_get_behavior(dockitem)
+				       | BONOBO_DOCK_ITEM_BEH_NEVER_FLOATING);
+	gui.menubar_h = GTK_WIDGET(dockitem);
+    }
+    else
+# endif	// FEAT_GUI_GNOME
+    {
+	// Always show the menubar, otherwise <F10> doesn't work.  It may be
+	// disabled in gui_init() later.
+	gtk_widget_show(gui.menubar);
+	gtk_box_pack_start(GTK_BOX(vbox), gui.menubar, FALSE, FALSE, 0);
+    }
+#endif	// FEAT_MENU
+
+#ifdef FEAT_TOOLBAR
+    /*
+     * Create the toolbar and handle
+     */
+    // some aesthetics on the toolbar
+# ifdef USE_GTK3
+    // TODO: Add GTK+ 3 code here using GtkCssProvider if necessary.
+    // N.B.  Since the default value of GtkToolbar::button-relief is
+    // GTK_RELIEF_NONE, there's no need to specify that, probably.
+# else
+    gtk_rc_parse_string(
+	    "style \"vim-toolbar-style\" {\n"
+	    "  GtkToolbar::button_relief = GTK_RELIEF_NONE\n"
+	    "}\n"
+	    "widget \"*.vim-toolbar\" style \"vim-toolbar-style\"\n");
+# endif
+    gui.toolbar = gtk_toolbar_new();
+    gtk_widget_set_name(gui.toolbar, "vim-toolbar");
+    set_toolbar_style(GTK_TOOLBAR(gui.toolbar));
+
+# ifdef FEAT_GUI_GNOME
+    if (using_gnome)
+    {
+	BonoboDockItem *dockitem;
+
+	gnome_app_set_toolbar(GNOME_APP(gui.mainwin), GTK_TOOLBAR(gui.toolbar));
+	dockitem = gnome_app_get_dock_item_by_name(GNOME_APP(gui.mainwin),
+						   GNOME_APP_TOOLBAR_NAME);
+	gui.toolbar_h = GTK_WIDGET(dockitem);
+	// When the toolbar is floating it gets stuck.  So long as that isn't
+	// fixed let's disallow floating.
+	bonobo_dock_item_set_behavior(dockitem,
+		bonobo_dock_item_get_behavior(dockitem)
+				       | BONOBO_DOCK_ITEM_BEH_NEVER_FLOATING);
+	gtk_container_set_border_width(GTK_CONTAINER(gui.toolbar), 0);
+    }
+    else
+# endif	// FEAT_GUI_GNOME
+    {
+	if (vim_strchr(p_go, GO_TOOLBAR) != NULL
+		&& (toolbar_flags & (TOOLBAR_TEXT | TOOLBAR_ICONS)))
+	    gtk_widget_show(gui.toolbar);
+	gtk_box_pack_start(GTK_BOX(vbox), gui.toolbar, FALSE, FALSE, 0);
+    }
+#endif // FEAT_TOOLBAR
+
+#ifdef FEAT_GUI_TABLINE
+    /*
+     * Use a Notebook for the tab pages labels.  The labels are hidden by
+     * default.
+     */
+    gui.tabline = gtk_notebook_new();
+    gtk_widget_show(gui.tabline);
+    gtk_box_pack_start(GTK_BOX(vbox), gui.tabline, FALSE, FALSE, 0);
+    gtk_notebook_set_show_border(GTK_NOTEBOOK(gui.tabline), FALSE);
+    gtk_notebook_set_show_tabs(GTK_NOTEBOOK(gui.tabline), FALSE);
+    gtk_notebook_set_scrollable(GTK_NOTEBOOK(gui.tabline), TRUE);
+# if !GTK_CHECK_VERSION(3,0,0)
+    gtk_notebook_set_tab_border(GTK_NOTEBOOK(gui.tabline), FALSE);
+# endif
+
+# if !GTK_CHECK_VERSION(3,0,0)
+    tabline_tooltip = gtk_tooltips_new();
+    gtk_tooltips_enable(GTK_TOOLTIPS(tabline_tooltip));
+# endif
+
+    {
+	GtkWidget *page, *label, *event_box;
+
+	// Add the first tab.
+# if GTK_CHECK_VERSION(3,2,0)
+	page = gtk_box_new(GTK_ORIENTATION_VERTICAL, 0);
+	gtk_box_set_homogeneous(GTK_BOX(page), FALSE);
+# else
+	page = gtk_vbox_new(FALSE, 0);
+# endif
+	gtk_widget_show(page);
+	gtk_container_add(GTK_CONTAINER(gui.tabline), page);
+	label = gtk_label_new("-Empty-");
+	gtk_widget_show(label);
+	event_box = gtk_event_box_new();
+	gtk_widget_show(event_box);
+	g_object_set_data(G_OBJECT(event_box), "tab_num", GINT_TO_POINTER(1L));
+# if !GTK_CHECK_VERSION(3,14,0)
+	gtk_misc_set_padding(GTK_MISC(label), 2, 2);
+# endif
+	gtk_container_add(GTK_CONTAINER(event_box), label);
+	gtk_notebook_set_tab_label(GTK_NOTEBOOK(gui.tabline), page, event_box);
+# if GTK_CHECK_VERSION(2,10,0)
+	gtk_notebook_set_tab_reorderable(GTK_NOTEBOOK(gui.tabline), page, TRUE);
+# endif
+    }
+
+    g_signal_connect(G_OBJECT(gui.tabline), "switch-page",
+		     G_CALLBACK(on_select_tab), NULL);
+# if GTK_CHECK_VERSION(2,10,0)
+    g_signal_connect(G_OBJECT(gui.tabline), "page-reordered",
+		     G_CALLBACK(on_tab_reordered), NULL);
+# endif
+
+    // Create a popup menu for the tab line and connect it.
+    tabline_menu = create_tabline_menu();
+    g_signal_connect_swapped(G_OBJECT(gui.tabline), "button-press-event",
+	    G_CALLBACK(on_tabline_menu), G_OBJECT(tabline_menu));
+#endif // FEAT_GUI_TABLINE
+
+    gui.formwin = gui_gtk_form_new();
+    gtk_container_set_border_width(GTK_CONTAINER(gui.formwin), 0);
+#if !GTK_CHECK_VERSION(3,0,0)
+    gtk_widget_set_events(gui.formwin, GDK_EXPOSURE_MASK);
+#endif
+#if GTK_CHECK_VERSION(3,22,2)
+    gtk_widget_set_name(gui.formwin, "vim-gtk-form");
+#endif
+
+    gui.drawarea = gtk_drawing_area_new();
+#if GTK_CHECK_VERSION(3,0,0)
+    gui.surface = NULL;
+#endif
+
+    // Determine which events we will filter.
+    gtk_widget_set_events(gui.drawarea,
+			  GDK_EXPOSURE_MASK |
+			  GDK_ENTER_NOTIFY_MASK |
+			  GDK_LEAVE_NOTIFY_MASK |
+			  GDK_BUTTON_PRESS_MASK |
+			  GDK_BUTTON_RELEASE_MASK |
+			  GDK_SCROLL_MASK |
+			  GDK_KEY_PRESS_MASK |
+			  GDK_KEY_RELEASE_MASK |
+			  GDK_POINTER_MOTION_MASK |
+			  GDK_POINTER_MOTION_HINT_MASK);
+
+    gtk_widget_show(gui.drawarea);
+    gui_gtk_form_put(GTK_FORM(gui.formwin), gui.drawarea, 0, 0);
+    gtk_widget_show(gui.formwin);
+    gtk_box_pack_start(GTK_BOX(vbox), gui.formwin, TRUE, TRUE, 0);
+
+    // For GtkSockets, key-presses must go to the focus widget (drawarea)
+    // and not the window.
+    g_signal_connect((gtk_socket_id == 0) ? G_OBJECT(gui.mainwin)
+					  : G_OBJECT(gui.drawarea),
+		       "key-press-event",
+		       G_CALLBACK(key_press_event), NULL);
+#if defined(FEAT_XIM) || GTK_CHECK_VERSION(3,0,0)
+    // Also forward key release events for the benefit of GTK+ 2 input
+    // modules.  Try CTRL-SHIFT-xdigits to enter a Unicode code point.
+    g_signal_connect((gtk_socket_id == 0) ? G_OBJECT(gui.mainwin)
+					  : G_OBJECT(gui.drawarea),
+		     "key-release-event",
+		     G_CALLBACK(&key_release_event), NULL);
+#endif
+    g_signal_connect(G_OBJECT(gui.drawarea), "realize",
+		     G_CALLBACK(drawarea_realize_cb), NULL);
+    g_signal_connect(G_OBJECT(gui.drawarea), "unrealize",
+		     G_CALLBACK(drawarea_unrealize_cb), NULL);
+#if GTK_CHECK_VERSION(3,0,0)
+    g_signal_connect(G_OBJECT(gui.drawarea), "configure-event",
+	    G_CALLBACK(drawarea_configure_event_cb), NULL);
+#endif
+#if GTK_CHECK_VERSION(3,22,2)
+    g_signal_connect_after(G_OBJECT(gui.drawarea), "style-updated",
+			   G_CALLBACK(&drawarea_style_updated_cb), NULL);
+#else
+    g_signal_connect_after(G_OBJECT(gui.drawarea), "style-set",
+			   G_CALLBACK(&drawarea_style_set_cb), NULL);
+#endif
+
+#if !GTK_CHECK_VERSION(3,0,0)
+    gui.visibility = GDK_VISIBILITY_UNOBSCURED;
+#endif
+
+#if !defined(USE_GNOME_SESSION)
+    wm_protocols_atom = gdk_atom_intern("WM_PROTOCOLS", FALSE);
+    save_yourself_atom = gdk_atom_intern("WM_SAVE_YOURSELF", FALSE);
+#endif
+
+    if (gtk_socket_id != 0)
+	// make sure keyboard input can go to the drawarea
+	gtk_widget_set_can_focus(gui.drawarea, TRUE);
+
+    /*
+     * Set clipboard specific atoms
+     */
+    vim_atom = gdk_atom_intern(VIM_ATOM_NAME, FALSE);
+    vimenc_atom = gdk_atom_intern(VIMENC_ATOM_NAME, FALSE);
+    clip_star.gtk_sel_atom = GDK_SELECTION_PRIMARY;
+    clip_plus.gtk_sel_atom = gdk_atom_intern("CLIPBOARD", FALSE);
+
+    /*
+     * Start out by adding the configured border width into the border offset.
+     */
+    gui.border_offset = gui.border_width;
+
+#if GTK_CHECK_VERSION(3,0,0)
+    g_signal_connect(G_OBJECT(gui.drawarea), "draw",
+		     G_CALLBACK(draw_event), NULL);
+#else
+    gtk_signal_connect(GTK_OBJECT(gui.mainwin), "visibility_notify_event",
+		       GTK_SIGNAL_FUNC(visibility_event), NULL);
+    gtk_signal_connect(GTK_OBJECT(gui.drawarea), "expose_event",
+		       GTK_SIGNAL_FUNC(expose_event), NULL);
+#endif
+
+    /*
+     * Only install these enter/leave callbacks when 'p' in 'guioptions'.
+     * Only needed for some window managers.
+     */
+    if (vim_strchr(p_go, GO_POINTER) != NULL)
+    {
+	g_signal_connect(G_OBJECT(gui.drawarea), "leave-notify-event",
+			 G_CALLBACK(leave_notify_event), NULL);
+	g_signal_connect(G_OBJECT(gui.drawarea), "enter-notify-event",
+			 G_CALLBACK(enter_notify_event), NULL);
+    }
+
+    // Real windows can get focus ... GtkPlug, being a mere container can't,
+    // only its widgets.  Arguably, this could be common code and we do not
+    // use the window focus at all, but let's be safe.
+    if (gtk_socket_id == 0)
+    {
+	g_signal_connect(G_OBJECT(gui.mainwin), "focus-out-event",
+			 G_CALLBACK(focus_out_event), NULL);
+	g_signal_connect(G_OBJECT(gui.mainwin), "focus-in-event",
+			 G_CALLBACK(focus_in_event), NULL);
+    }
+    else
+    {
+	g_signal_connect(G_OBJECT(gui.drawarea), "focus-out-event",
+			 G_CALLBACK(focus_out_event), NULL);
+	g_signal_connect(G_OBJECT(gui.drawarea), "focus-in-event",
+			 G_CALLBACK(focus_in_event), NULL);
+#ifdef FEAT_GUI_TABLINE
+	g_signal_connect(G_OBJECT(gui.tabline), "focus-out-event",
+			 G_CALLBACK(focus_out_event), NULL);
+	g_signal_connect(G_OBJECT(gui.tabline), "focus-in-event",
+			 G_CALLBACK(focus_in_event), NULL);
+#endif // FEAT_GUI_TABLINE
+    }
+
+    g_signal_connect(G_OBJECT(gui.drawarea), "motion-notify-event",
+		     G_CALLBACK(motion_notify_event), NULL);
+    g_signal_connect(G_OBJECT(gui.drawarea), "button-press-event",
+		     G_CALLBACK(button_press_event), NULL);
+    g_signal_connect(G_OBJECT(gui.drawarea), "button-release-event",
+		     G_CALLBACK(button_release_event), NULL);
+    g_signal_connect(G_OBJECT(gui.drawarea), "scroll-event",
+		     G_CALLBACK(&scroll_event), NULL);
+
+    /*
+     * Add selection handler functions.
+     */
+    g_signal_connect(G_OBJECT(gui.drawarea), "selection-clear-event",
+		     G_CALLBACK(selection_clear_event), NULL);
+    g_signal_connect(G_OBJECT(gui.drawarea), "selection-received",
+		     G_CALLBACK(selection_received_cb), NULL);
+
+    gui_gtk_set_selection_targets();
+
+    g_signal_connect(G_OBJECT(gui.drawarea), "selection-get",
+		     G_CALLBACK(selection_get_cb), NULL);
+
+    // Pretend we don't have input focus, we will get an event if we do.
+    gui.in_focus = FALSE;
+
+    // Handle changes to the "Xft/DPI" setting.
+    {
+	GtkSettings *gtk_settings =
+			 gtk_settings_get_for_screen(gdk_screen_get_default());
+
+	g_signal_connect(gtk_settings, "notify::gtk-xft-dpi",
+			   G_CALLBACK(gtk_settings_xft_dpi_changed_cb), NULL);
+    }
+
+    return OK;
+}
+
+#if defined(USE_GNOME_SESSION) || defined(PROTO)
+/*
+ * This is called from gui_start() after a fork() has been done.
+ * We have to tell the session manager our new PID.
+ */
+    void
+gui_mch_forked(void)
+{
+    if (!using_gnome)
+	return;
+
+    GnomeClient *client;
+
+    client = gnome_master_client();
+
+    if (client != NULL)
+	gnome_client_set_process_id(client, getpid());
+}
+#endif // USE_GNOME_SESSION
+
+#if GTK_CHECK_VERSION(3,0,0)
+    static GdkRGBA
+color_to_rgba(guicolor_T color)
+{
+    GdkRGBA rgba;
+    rgba.red   = ((color & 0xff0000) >> 16) / 255.0;
+    rgba.green = ((color & 0xff00) >> 8) / 255.0;
+    rgba.blue  = ((color & 0xff)) / 255.0;
+    rgba.alpha = 1.0;
+    return rgba;
+}
+
+    static void
+set_cairo_source_rgba_from_color(cairo_t *cr, guicolor_T color)
+{
+    const GdkRGBA rgba = color_to_rgba(color);
+    cairo_set_source_rgba(cr, rgba.red, rgba.green, rgba.blue, rgba.alpha);
+}
+#endif // GTK_CHECK_VERSION(3,0,0)
+
+/*
+ * Called when the foreground or background color has been changed.
+ * This used to change the graphics contexts directly but we are
+ * currently manipulating them where desired.
+ */
+    void
+gui_mch_new_colors(void)
+{
+    if (gui.drawarea != NULL
+#if GTK_CHECK_VERSION(3,22,2)
+	    && gui.formwin != NULL
+#endif
+	    && gtk_widget_get_window(gui.drawarea) != NULL)
+    {
+#if !GTK_CHECK_VERSION(3,22,2)
+	GdkWindow * const da_win = gtk_widget_get_window(gui.drawarea);
+#endif
+#if GTK_CHECK_VERSION(3,22,2)
+	GtkStyleContext * const context =
+				     gtk_widget_get_style_context(gui.formwin);
+	GtkCssProvider * const provider = gtk_css_provider_new();
+	gchar * const css = g_strdup_printf(
+		"widget#vim-gtk-form {\n"
+		"  background-color: #%.2lx%.2lx%.2lx;\n"
+		"}\n",
+		 (gui.back_pixel >> 16) & 0xff,
+		 (gui.back_pixel >> 8) & 0xff,
+		 gui.back_pixel & 0xff);
+
+	gtk_css_provider_load_from_data(provider, css, -1, NULL);
+	gtk_style_context_add_provider(context,
+		GTK_STYLE_PROVIDER(provider), G_MAXUINT);
+
+	g_free(css);
+	g_object_unref(provider);
+#elif GTK_CHECK_VERSION(3,4,0) // !GTK_CHECK_VERSION(3,22,2)
+	GdkRGBA rgba;
+
+	rgba = color_to_rgba(gui.back_pixel);
+	{
+	    cairo_pattern_t * const pat = cairo_pattern_create_rgba(
+		    rgba.red, rgba.green, rgba.blue, rgba.alpha);
+	    if (pat != NULL)
+	    {
+		gdk_window_set_background_pattern(da_win, pat);
+		cairo_pattern_destroy(pat);
+	    }
+	    else
+		gdk_window_set_background_rgba(da_win, &rgba);
+	}
+#else // !GTK_CHECK_VERSION(3,4,0)
+	GdkColor color = { 0, 0, 0, 0 };
+
+	color.pixel = gui.back_pixel;
+	gdk_window_set_background(da_win, &color);
+#endif // !GTK_CHECK_VERSION(3,22,2)
+    }
+}
+
+/*
+ * This signal informs us about the need to rearrange our sub-widgets.
+ */
+    static gint
+form_configure_event(GtkWidget *widget UNUSED,
+		     GdkEventConfigure *event,
+		     gpointer data UNUSED)
+{
+    int	    usable_height = event->height;
+#ifdef TRACK_RESIZE_HISTORY
+    // Resize requests are made for gui.mainwin;
+    // get its dimensions for searching if this event
+    // is a response to a vim request.
+    int	    w, h;
+    gtk_window_get_size(GTK_WINDOW(gui.mainwin), &w, &h);
+
+# ifdef ENABLE_RESIZE_HISTORY_LOG
+    ch_log(NULL, "gui_gtk: form_configure_event: (%d, %d) [%d, %d]",
+	   w, h, (int)Columns, (int)Rows);
+# endif
+
+    // Look through history of recent vim resize requests.
+    // If this event matches:
+    //	    - "latest resize hist" We're caught up;
+    //		clear the history and process this event.
+    //		If history is, old to new, 100, 99, 100, 99. If this event is
+    //		99 for the stale, it is matched against the current. History
+    //		is cleared, we may bounce, but no worse than before.
+    //	    - "older/stale hist" If match an unused event in history,
+    //		then discard this event, and mark the matching event as used.
+    //	    - "no match" Figure it's a user resize event, clear history.
+    // NOTE: clear history is default, then all incoming events are processed
+
+    if (!MATCH_WIDTH_HEIGHT(latest_resize_hist, w, h)
+					     && match_stale_width_height(w, h))
+	// discard stale event
+	return TRUE;
+    clear_resize_hists();
+#endif
+
+#if GTK_CHECK_VERSION(3,22,2) && !GTK_CHECK_VERSION(3,22,4)
+    // As of 3.22.2, GdkWindows have started distributing configure events to
+    // their "native" children (https://git.gnome.org/browse/gtk+/commit/?h=gtk-3-22&id=12579fe71b3b8f79eb9c1b80e429443bcc437dd0).
+    //
+    // As can be seen from the implementation of move_native_children() and
+    // configure_native_child() in gdkwindow.c, those functions actually
+    // propagate configure events to every child, failing to distinguish
+    // "native" one from non-native one.
+    //
+    // Naturally, configure events propagated to here like that are fallacious
+    // and, as a matter of fact, they trigger a geometric collapse of
+    // gui.formwin.
+    //
+    // To filter out such fallacious events, check if the given event is the
+    // one that was sent out to the right place. Ignore it if not.
+    //
+    // Follow-up
+    // After a few weeks later, the GdkWindow change mentioned above was
+    // reverted (https://git.gnome.org/browse/gtk+/commit/?h=gtk-3-22&id=f70039cb9603a02d2369fec4038abf40a1711155).
+    // The corresponding official release is 3.22.4.
+    if (event->window != gtk_widget_get_window(gui.formwin))
+	return TRUE;
+#endif
+
+    // When in a GtkPlug, we can't guarantee valid heights (as a round
+    // no. of char-heights), so we have to manually sanitise them.
+    // Widths seem to sort themselves out, don't ask me why.
+    if (gtk_socket_id != 0)
+	usable_height -= (gui.char_height - (gui.char_height/2)); // sic.
+
+    gui_gtk_form_freeze(GTK_FORM(gui.formwin));
+    gui_resize_shell(event->width, usable_height);
+    gui_gtk_form_thaw(GTK_FORM(gui.formwin));
+
+    return TRUE;
+}
+
+/*
+ * Function called when window already closed.
+ * We can't do much more here than to trying to preserve what had been done,
+ * since the window is already inevitably going away.
+ */
+    static void
+mainwin_destroy_cb(GObject *object UNUSED, gpointer data UNUSED)
+{
+    // Don't write messages to the GUI anymore
+    full_screen = FALSE;
+
+    gui.mainwin  = NULL;
+    gui.drawarea = NULL;
+
+    if (!exiting) // only do anything if the destroy was unexpected
+    {
+	vim_strncpy(IObuff,
+		(char_u *)_("Vim: Main window unexpectedly destroyed\n"),
+		IOSIZE - 1);
+	preserve_exit();
+    }
+#ifdef USE_GRESOURCE
+    gui_gtk_unregister_resource();
+#endif
+}
+
+    void
+gui_gtk_get_screen_geom_of_win(
+	GtkWidget *wid,
+	int point_x,	    // x position of window if not initialized
+	int point_y,	    // y position of window if not initialized
+	int *screen_x,
+	int *screen_y,
+	int *width,
+	int *height)
+{
+    GdkRectangle geometry;
+    GdkWindow *win = gtk_widget_get_window(wid);
+#if GTK_CHECK_VERSION(3,22,0)
+    GdkDisplay *dpy;
+    GdkMonitor *monitor;
+
+    if (wid != NULL && gtk_widget_get_realized(wid))
+	dpy = gtk_widget_get_display(wid);
+    else
+	dpy = gdk_display_get_default();
+    if (win != NULL)
+	monitor = gdk_display_get_monitor_at_window(dpy, win);
+    else
+	monitor = gdk_display_get_monitor_at_point(dpy, point_x, point_y);
+    gdk_monitor_get_geometry(monitor, &geometry);
+#else
+    GdkScreen* screen;
+    int monitor;
+
+    if (wid != NULL && gtk_widget_has_screen(wid))
+	screen = gtk_widget_get_screen(wid);
+    else
+	screen = gdk_screen_get_default();
+    if (win != NULL)
+	monitor = gdk_screen_get_monitor_at_window(screen, win);
+    else
+	monitor = gdk_screen_get_monitor_at_point(screen, point_x, point_y);
+    gdk_screen_get_monitor_geometry(screen, monitor, &geometry);
+#endif
+    *screen_x = geometry.x;
+    *screen_y = geometry.y;
+    *width = geometry.width;
+    *height = geometry.height;
+}
+
+/*
+ * The screen size is used to make sure the initial window doesn't get bigger
+ * than the screen.  This subtracts some room for menubar, toolbar and window
+ * decorations.
+ */
+    static void
+gui_gtk_get_screen_dimensions(
+	int point_x,
+	int point_y,
+	int *screen_w,
+	int *screen_h)
+{
+    int	    x, y;
+
+    gui_gtk_get_screen_geom_of_win(gui.mainwin, point_x, point_y,
+						   &x, &y, screen_w, screen_h);
+
+    // Subtract 'guiheadroom' from the height to allow some room for the
+    // window manager (task list and window title bar).
+    *screen_h -= p_ghr;
+
+    /*
+     * FIXME: dirty trick: Because the gui_get_base_height() doesn't include
+     * the toolbar and menubar for GTK, we subtract them from the screen
+     * height, so that the window size can be made to fit on the screen.
+     * This should be completely changed later.
+     */
+    *screen_w -= get_menu_tool_width();
+    *screen_h -= get_menu_tool_height();
+}
+
+    void
+gui_mch_get_screen_dimensions(int *screen_w, int *screen_h)
+{
+    gui_gtk_get_screen_dimensions(0, 0, screen_w, screen_h);
+}
+
+
+/*
+ * Bit of a hack to ensure we start GtkPlug windows with the correct window
+ * hints (and thus the required size from -geom), but that after that we
+ * put the hints back to normal (the actual minimum size) so we may
+ * subsequently be resized smaller.  GtkSocket (the parent end) uses the
+ * plug's window 'min hints to set *its* minimum size, but that's also the
+ * only way we have of making ourselves bigger (by set lines/columns).
+ * Thus set hints at start-up to ensure correct init. size, then a
+ * second after the final attempt to reset the real minimum hints (done by
+ * scrollbar init.), actually do the standard hints and stop the timer.
+ * We'll not let the default hints be set while this timer's active.
+ */
+    static timeout_cb_type
+check_startup_plug_hints(gpointer data UNUSED)
+{
+    if (init_window_hints_state == 1)
+    {
+	// Safe to use normal hints now
+	init_window_hints_state = 0;
+	update_window_manager_hints(0, 0);
+	return FALSE;   // stop timer
+    }
+
+    // Keep on trying
+    init_window_hints_state = 1;
+    return TRUE;
+}
+
+/*
+ * Open the GUI window which was created by a call to gui_mch_init().
+ */
+    int
+gui_mch_open(void)
+{
+    guicolor_T fg_pixel = INVALCOLOR;
+    guicolor_T bg_pixel = INVALCOLOR;
+    guint		pixel_width;
+    guint		pixel_height;
+
+    /*
+     * Allow setting a window role on the command line, or invent one
+     * if none was specified.  This is mainly useful for GNOME session
+     * support; allowing the WM to restore window placement.
+     */
+    if (role_argument != NULL)
+    {
+	gtk_window_set_role(GTK_WINDOW(gui.mainwin), role_argument);
+    }
+    else
+    {
+	char *role;
+
+	// Invent a unique-enough ID string for the role
+	role = g_strdup_printf("vim-%u-%u-%u",
+			       (unsigned)mch_get_pid(),
+			       (unsigned)g_random_int(),
+			       (unsigned)time(NULL));
+
+	gtk_window_set_role(GTK_WINDOW(gui.mainwin), role);
+	g_free(role);
+    }
+
+    if (gui_win_x != -1 && gui_win_y != -1)
+	gtk_window_move(GTK_WINDOW(gui.mainwin), gui_win_x, gui_win_y);
+
+    // Determine user specified geometry, if present.
+    if (gui.geom != NULL)
+    {
+	int		mask;
+	unsigned int	w, h;
+	int		x = 0;
+	int		y = 0;
+
+	mask = XParseGeometry((char *)gui.geom, &x, &y, &w, &h);
+
+	if (mask & WidthValue)
+	    Columns = w;
+	if (mask & HeightValue)
+	{
+	    if (p_window > (long)h - 1 || !option_was_set((char_u *)"window"))
+		p_window = h - 1;
+	    Rows = h;
+	}
+	limit_screen_size();
+
+	pixel_width = (guint)(gui_get_base_width() + Columns * gui.char_width);
+	pixel_height = (guint)(gui_get_base_height() + Rows * gui.char_height);
+
+	pixel_width  += get_menu_tool_width();
+	pixel_height += get_menu_tool_height();
+
+	if (mask & (XValue | YValue))
+	{
+	    int ww, hh;
+
+#ifdef FEAT_GUI_GTK
+	    gui_gtk_get_screen_dimensions(x, y, &ww, &hh);
+#else
+	    gui_mch_get_screen_dimensions(&ww, &hh);
+#endif
+	    hh += p_ghr + get_menu_tool_height();
+	    ww += get_menu_tool_width();
+	    if (mask & XNegative)
+		x += ww - pixel_width;
+	    if (mask & YNegative)
+		y += hh - pixel_height;
+	    gtk_window_move(GTK_WINDOW(gui.mainwin), x, y);
+	}
+	VIM_CLEAR(gui.geom);
+
+	// From now until everyone's stopped trying to set the window hints
+	// to their correct minimum values, stop them being set as we need
+	// them to remain at our required size for the parent GtkSocket to
+	// give us the right initial size.
+	if (gtk_socket_id != 0  &&  (mask & WidthValue || mask & HeightValue))
+	{
+	    update_window_manager_hints(pixel_width, pixel_height);
+	    init_window_hints_state = 1;
+	    timeout_add(1000, check_startup_plug_hints, NULL);
+	}
+    }
+
+    pixel_width = (guint)(gui_get_base_width() + Columns * gui.char_width);
+    pixel_height = (guint)(gui_get_base_height() + Rows * gui.char_height);
+    // For GTK2 changing the size of the form widget doesn't cause window
+    // resizing.
+    if (gtk_socket_id == 0)
+	gtk_window_resize(GTK_WINDOW(gui.mainwin), pixel_width, pixel_height);
+    update_window_manager_hints(0, 0);
+
+    if (foreground_argument != NULL)
+	fg_pixel = gui_get_color((char_u *)foreground_argument);
+    if (fg_pixel == INVALCOLOR)
+	fg_pixel = gui_get_color((char_u *)"Black");
+
+    if (background_argument != NULL)
+	bg_pixel = gui_get_color((char_u *)background_argument);
+    if (bg_pixel == INVALCOLOR)
+	bg_pixel = gui_get_color((char_u *)"White");
+
+    if (found_reverse_arg)
+    {
+	gui.def_norm_pixel = bg_pixel;
+	gui.def_back_pixel = fg_pixel;
+    }
+    else
+    {
+	gui.def_norm_pixel = fg_pixel;
+	gui.def_back_pixel = bg_pixel;
+    }
+
+    // Get the colors from the "Normal" and "Menu" group (set in syntax.c or
+    // in a vimrc file)
+    set_normal_colors();
+
+    // Check that none of the colors are the same as the background color
+    gui_check_colors();
+
+    // Get the colors for the highlight groups (gui_check_colors() might have
+    // changed them).
+    highlight_gui_started();	// re-init colors and fonts
+
+    g_signal_connect(G_OBJECT(gui.mainwin), "destroy",
+		     G_CALLBACK(mainwin_destroy_cb), NULL);
+
+    /*
+     * Notify the fixed area about the need to resize the contents of the
+     * gui.formwin, which we use for random positioning of the included
+     * components.
+     *
+     * We connect this signal deferred finally after anything is in place,
+     * since this is intended to handle resizements coming from the window
+     * manager upon us and should not interfere with what VIM is requesting
+     * upon startup.
+     */
+#ifdef TRACK_RESIZE_HISTORY
+    latest_resize_hist = ALLOC_CLEAR_ONE(resize_hist_T);
+#endif
+    g_signal_connect(G_OBJECT(gui.formwin), "configure-event",
+				       G_CALLBACK(form_configure_event), NULL);
+
+#ifdef FEAT_DND
+    // Set up for receiving DND items.
+    gui_gtk_set_dnd_targets();
+
+    g_signal_connect(G_OBJECT(gui.drawarea), "drag-data-received",
+				      G_CALLBACK(drag_data_received_cb), NULL);
+#endif
+
+	// With GTK+ 2, we need to iconify the window before calling show()
+	// to avoid mapping the window for a short time.
+	if (found_iconic_arg && gtk_socket_id == 0)
+	    gui_mch_iconify();
+
+    {
+#if defined(FEAT_GUI_GNOME) && defined(FEAT_MENU)
+	unsigned long menu_handler = 0;
+# ifdef FEAT_TOOLBAR
+	unsigned long tool_handler = 0;
+# endif
+	/*
+	 * Urgh hackish :/  For some reason BonoboDockLayout always forces a
+	 * show when restoring the saved layout configuration.	We can't just
+	 * hide the widgets again after gtk_widget_show(gui.mainwin) since it's
+	 * a toplevel window and thus will be realized immediately.  Instead,
+	 * connect signal handlers to hide the widgets just after they've been
+	 * marked visible, but before the main window is realized.
+	 */
+	if (using_gnome && vim_strchr(p_go, GO_MENUS) == NULL)
+	    menu_handler = g_signal_connect_after(gui.menubar_h, "show",
+						  G_CALLBACK(&gtk_widget_hide),
+						  NULL);
+# ifdef FEAT_TOOLBAR
+	if (using_gnome && vim_strchr(p_go, GO_TOOLBAR) == NULL
+		&& (toolbar_flags & (TOOLBAR_TEXT | TOOLBAR_ICONS)))
+	    tool_handler = g_signal_connect_after(gui.toolbar_h, "show",
+						  G_CALLBACK(&gtk_widget_hide),
+						  NULL);
+# endif
+#endif
+	gtk_widget_show(gui.mainwin);
+
+#if defined(FEAT_GUI_GNOME) && defined(FEAT_MENU)
+	if (menu_handler != 0)
+	    g_signal_handler_disconnect(gui.menubar_h, menu_handler);
+# ifdef FEAT_TOOLBAR
+	if (tool_handler != 0)
+	    g_signal_handler_disconnect(gui.toolbar_h, tool_handler);
+# endif
+#endif
+    }
+
+    return OK;
+}
+
+/*
+ * Clean up for when exiting Vim.
+ */
+    void
+gui_mch_exit(int rc UNUSED)
+{
+    // Clean up, unless we don't want to invoke free().
+    if (gui.mainwin != NULL && !really_exiting)
+	gtk_widget_destroy(gui.mainwin);
+}
+
+/*
+ * Get the position of the top left corner of the window.
+ */
+    int
+gui_mch_get_winpos(int *x, int *y)
+{
+    gtk_window_get_position(GTK_WINDOW(gui.mainwin), x, y);
+    return OK;
+}
+
+/*
+ * Set the position of the top left corner of the window to the given
+ * coordinates.
+ */
+    void
+gui_mch_set_winpos(int x, int y)
+{
+    gtk_window_move(GTK_WINDOW(gui.mainwin), x, y);
+}
+
+#if !GTK_CHECK_VERSION(3,0,0)
+# if 0
+static int resize_idle_installed = FALSE;
+/*
+ * Idle handler to force resize.  Used by gui_mch_set_shellsize() to ensure
+ * the shell size doesn't exceed the window size, i.e. if the window manager
+ * ignored our size request.  Usually this happens if the window is maximized.
+ *
+ * FIXME: It'd be nice if we could find a little more orthodox solution.
+ * See also the remark below in gui_mch_set_shellsize().
+ *
+ * DISABLED: When doing ":set lines+=1" this function would first invoke
+ * gui_resize_shell() with the old size, then the normal callback would
+ * report the new size through form_configure_event().  That caused the window
+ * layout to be messed up.
+ */
+    static gboolean
+force_shell_resize_idle(gpointer data)
+{
+    if (gui.mainwin != NULL
+	    && GTK_WIDGET_REALIZED(gui.mainwin)
+	    && GTK_WIDGET_VISIBLE(gui.mainwin))
+    {
+	int width;
+	int height;
+
+	gtk_window_get_size(GTK_WINDOW(gui.mainwin), &width, &height);
+
+	width  -= get_menu_tool_width();
+	height -= get_menu_tool_height();
+
+	gui_resize_shell(width, height);
+    }
+
+    resize_idle_installed = FALSE;
+    return FALSE; // don't call me again
+}
+# endif
+#endif // !GTK_CHECK_VERSION(3,0,0)
+
+/*
+ * Return TRUE if the main window is maximized.
+ */
+    int
+gui_mch_maximized(void)
+{
+    return (gui.mainwin != NULL && gtk_widget_get_window(gui.mainwin) != NULL
+	    && (gdk_window_get_state(gtk_widget_get_window(gui.mainwin))
+					       & GDK_WINDOW_STATE_MAXIMIZED));
+}
+
+/*
+ * Unmaximize the main window
+ */
+    void
+gui_mch_unmaximize(void)
+{
+    if (gui.mainwin != NULL)
+	gtk_window_unmaximize(GTK_WINDOW(gui.mainwin));
+}
+
+/*
+ * Called when the font changed while the window is maximized or GO_KEEPWINSIZE
+ * is set.  Compute the new Rows and Columns.  This is like resizing the
+ * window.
+ */
+    void
+gui_mch_newfont(void)
+{
+    int w, h;
+
+    gtk_window_get_size(GTK_WINDOW(gui.mainwin), &w, &h);
+    w -= get_menu_tool_width();
+    h -= get_menu_tool_height();
+    gui_resize_shell(w, h);
+}
+
+/*
+ * Set the windows size.
+ */
+    void
+gui_mch_set_shellsize(int width, int height,
+		      int min_width UNUSED,  int min_height UNUSED,
+		      int base_width UNUSED, int base_height UNUSED,
+		      int direction UNUSED)
+{
+    // give GTK+ a chance to put all widget's into place
+    gui_mch_update();
+
+    // this will cause the proper resizement to happen too
+    if (gtk_socket_id == 0)
+	update_window_manager_hints(0, 0);
+
+    // With GTK+ 2, changing the size of the form widget doesn't resize
+    // the window.  So let's do it the other way around and resize the
+    // main window instead.
+    width  += get_menu_tool_width();
+    height += get_menu_tool_height();
+
+#ifdef TRACK_RESIZE_HISTORY
+    alloc_resize_hist(width, height); // track the resize request
+#endif
+    if (gtk_socket_id == 0)
+	gtk_window_resize(GTK_WINDOW(gui.mainwin), width, height);
+    else
+	update_window_manager_hints(width, height);
+
+# if !GTK_CHECK_VERSION(3,0,0)
+#  if 0
+    if (!resize_idle_installed)
+    {
+	g_idle_add_full(GDK_PRIORITY_EVENTS + 10,
+			&force_shell_resize_idle, NULL, NULL);
+	resize_idle_installed = TRUE;
+    }
+#  endif
+# endif // !GTK_CHECK_VERSION(3,0,0)
+    /*
+     * Wait until all events are processed to prevent a crash because the
+     * real size of the drawing area doesn't reflect Vim's internal ideas.
+     *
+     * This is a bit of a hack, since Vim is a terminal application with a GUI
+     * on top, while the GUI expects to be the boss.
+     */
+    gui_mch_update();
+}
+
+    void
+gui_mch_settitle(char_u *title, char_u *icon UNUSED)
+{
+    if (title != NULL && output_conv.vc_type != CONV_NONE)
+	title = string_convert(&output_conv, title, NULL);
+
+    gtk_window_set_title(GTK_WINDOW(gui.mainwin), (const char *)title);
+
+    if (output_conv.vc_type != CONV_NONE)
+	vim_free(title);
+}
+
+#if defined(FEAT_MENU) || defined(PROTO)
+    void
+gui_mch_enable_menu(int showit)
+{
+    GtkWidget *widget;
+
+# ifdef FEAT_GUI_GNOME
+    if (using_gnome)
+	widget = gui.menubar_h;
+    else
+# endif
+	widget = gui.menubar;
+
+    // Do not disable the menu while starting up, otherwise F10 doesn't work.
+    if (!showit != !gtk_widget_get_visible(widget) && !gui.starting)
+    {
+	if (showit)
+	    gtk_widget_show(widget);
+	else
+	    gtk_widget_hide(widget);
+
+	update_window_manager_hints(0, 0);
+    }
+}
+#endif // FEAT_MENU
+
+#if defined(FEAT_TOOLBAR) || defined(PROTO)
+    void
+gui_mch_show_toolbar(int showit)
+{
+    GtkWidget *widget;
+
+    if (gui.toolbar == NULL)
+	return;
+
+# ifdef FEAT_GUI_GNOME
+    if (using_gnome)
+	widget = gui.toolbar_h;
+    else
+# endif
+	widget = gui.toolbar;
+
+    if (showit)
+	set_toolbar_style(GTK_TOOLBAR(gui.toolbar));
+
+    if (!showit != !gtk_widget_get_visible(widget))
+    {
+	if (showit)
+	    gtk_widget_show(widget);
+	else
+	    gtk_widget_hide(widget);
+
+	update_window_manager_hints(0, 0);
+    }
+}
+#endif // FEAT_TOOLBAR
+
+/*
+ * Check if a given font is a CJK font. This is done in a very crude manner. It
+ * just see if U+04E00 for zh and ja and U+AC00 for ko are covered in a given
+ * font. Consequently, this function cannot  be used as a general purpose check
+ * for CJK-ness for which fontconfig APIs should be used.  This is only used by
+ * gui_mch_init_font() to deal with 'CJK fixed width fonts'.
+ */
+    static int
+is_cjk_font(PangoFontDescription *font_desc)
+{
+    static const char * const cjk_langs[] =
+	{"zh_CN", "zh_TW", "zh_HK", "ja", "ko"};
+
+    PangoFont	*font;
+    unsigned	i;
+    int		is_cjk = FALSE;
+
+    font = pango_context_load_font(gui.text_context, font_desc);
+
+    if (font == NULL)
+	return FALSE;
+
+    for (i = 0; !is_cjk && i < G_N_ELEMENTS(cjk_langs); ++i)
+    {
+	PangoCoverage	*coverage;
+	gunichar	uc;
+
+	// Valgrind reports a leak for pango_language_from_string(), but the
+	// documentation says "This is owned by Pango and should not be freed".
+	coverage = pango_font_get_coverage(
+		font, pango_language_from_string(cjk_langs[i]));
+
+	if (coverage != NULL)
+	{
+	    uc = (cjk_langs[i][0] == 'k') ? 0xAC00 : 0x4E00;
+	    is_cjk = (pango_coverage_get(coverage, uc) == PANGO_COVERAGE_EXACT);
+#if PANGO_VERSION_CHECK(1, 52, 0)
+	    g_object_unref(coverage);
+#else
+	    pango_coverage_unref(coverage);
+#endif
+	}
+    }
+
+    g_object_unref(font);
+
+    return is_cjk;
+}
+
+/*
+ * Adjust gui.char_height (after 'linespace' was changed).
+ */
+    int
+gui_mch_adjust_charheight(void)
+{
+    PangoFontMetrics	*metrics;
+    int			ascent;
+    int			descent;
+
+    metrics = pango_context_get_metrics(gui.text_context, gui.norm_font,
+				pango_context_get_language(gui.text_context));
+    ascent  = pango_font_metrics_get_ascent(metrics);
+    descent = pango_font_metrics_get_descent(metrics);
+
+    pango_font_metrics_unref(metrics);
+
+    // Round up when the value is more than about 1/16 of a pixel above a whole
+    // pixel (12.0624 becomes 12, 12.07 becomes 13).  Then add 'linespace'.
+    gui.char_height = (ascent + descent + (PANGO_SCALE * 15) / 16)
+						   / PANGO_SCALE + p_linespace;
+    // LINTED: avoid warning: bitwise operation on signed value
+    gui.char_ascent = PANGO_PIXELS(ascent + p_linespace * PANGO_SCALE / 2);
+
+    // A not-positive value of char_height may crash Vim.  Only happens
+    // if 'linespace' is negative (which does make sense sometimes).
+    gui.char_ascent = MAX(gui.char_ascent, 0);
+    gui.char_height = MAX(gui.char_height, gui.char_ascent + 1);
+
+    return OK;
+}
+
+#if GTK_CHECK_VERSION(3,0,0)
+// Callback function used in gui_mch_font_dialog()
+    static gboolean
+font_filter(const PangoFontFamily *family,
+	    const PangoFontFace   *face UNUSED,
+	    gpointer		   data UNUSED)
+{
+    return pango_font_family_is_monospace((PangoFontFamily *)family);
+}
+#endif
+
+/*
+ * Put up a font dialog and return the selected font name in allocated memory.
+ * "oldval" is the previous value.  Return NULL when cancelled.
+ * This should probably go into gui_gtk.c.  Hmm.
+ * FIXME:
+ * The GTK2 font selection dialog has no filtering API.  So we could either
+ * a) implement our own (possibly copying the code from somewhere else) or
+ * b) just live with it.
+ */
+    char_u *
+gui_mch_font_dialog(char_u *oldval)
+{
+    GtkWidget	*dialog;
+    int		response;
+    char_u	*fontname = NULL;
+    char_u	*oldname;
+
+#if GTK_CHECK_VERSION(3,2,0)
+    dialog = gtk_font_chooser_dialog_new(NULL, NULL);
+    gtk_font_chooser_set_filter_func(GTK_FONT_CHOOSER(dialog), font_filter,
+	    NULL, NULL);
+#else
+    dialog = gtk_font_selection_dialog_new(NULL);
+#endif
+
+    gtk_window_set_transient_for(GTK_WINDOW(dialog), GTK_WINDOW(gui.mainwin));
+    gtk_window_set_destroy_with_parent(GTK_WINDOW(dialog), TRUE);
+
+    if (oldval != NULL && oldval[0] != NUL)
+    {
+	if (output_conv.vc_type != CONV_NONE)
+	    oldname = string_convert(&output_conv, oldval, NULL);
+	else
+	    oldname = oldval;
+
+	// Annoying bug in GTK (or Pango): if the font name does not include a
+	// size, zero is used.  Use default point size ten.
+	if (!vim_isdigit(oldname[STRLEN(oldname) - 1]))
+	{
+	    char_u	*p = vim_strnsave(oldname, STRLEN(oldname) + 3);
+
+	    if (p != NULL)
+	    {
+		STRCPY(p + STRLEN(p), " 10");
+		if (oldname != oldval)
+		    vim_free(oldname);
+		oldname = p;
+	    }
+	}
+
+#if GTK_CHECK_VERSION(3,2,0)
+	gtk_font_chooser_set_font(
+		GTK_FONT_CHOOSER(dialog), (const gchar *)oldname);
+#else
+	gtk_font_selection_dialog_set_font_name(
+		GTK_FONT_SELECTION_DIALOG(dialog), (const char *)oldname);
+#endif
+
+	if (oldname != oldval)
+	    vim_free(oldname);
+    }
+    else
+#if GTK_CHECK_VERSION(3,2,0)
+	gtk_font_chooser_set_font(
+		GTK_FONT_CHOOSER(dialog), DEFAULT_FONT);
+#else
+	gtk_font_selection_dialog_set_font_name(
+		GTK_FONT_SELECTION_DIALOG(dialog), DEFAULT_FONT);
+#endif
+
+    response = gtk_dialog_run(GTK_DIALOG(dialog));
+
+    if (response == GTK_RESPONSE_OK)
+    {
+	char *name;
+
+#if GTK_CHECK_VERSION(3,2,0)
+	name = gtk_font_chooser_get_font(GTK_FONT_CHOOSER(dialog));
+#else
+	name = gtk_font_selection_dialog_get_font_name(
+			    GTK_FONT_SELECTION_DIALOG(dialog));
+#endif
+	if (name != NULL)
+	{
+	    char_u  *p;
+
+	    // Apparently some font names include a comma, need to escape
+	    // that, because in 'guifont' it separates names.
+	    p = vim_strsave_escaped((char_u *)name, (char_u *)",");
+	    g_free(name);
+	    if (p != NULL && input_conv.vc_type != CONV_NONE)
+	    {
+		fontname = string_convert(&input_conv, p, NULL);
+		vim_free(p);
+	    }
+	    else
+		fontname = p;
+	}
+    }
+
+    if (response != GTK_RESPONSE_NONE)
+	gtk_widget_destroy(dialog);
+
+    return fontname;
+}
+
+/*
+ * Some monospace fonts don't support a bold weight, and fall back
+ * silently to the regular weight.  But this is no good since our text
+ * drawing function can emulate bold by overstriking.  So let's try
+ * to detect whether bold weight is actually available and emulate it
+ * otherwise.
+ *
+ * Note that we don't need to check for italic style since Xft can
+ * emulate italic on its own, provided you have a proper fontconfig
+ * setup.  We wouldn't be able to emulate it in Vim anyway.
+ */
+    static void
+get_styled_font_variants(void)
+{
+    PangoFontDescription    *bold_font_desc;
+    PangoFont		    *plain_font;
+    PangoFont		    *bold_font;
+
+    gui.font_can_bold = FALSE;
+
+    plain_font = pango_context_load_font(gui.text_context, gui.norm_font);
+
+    if (plain_font == NULL)
+	return;
+
+    bold_font_desc = pango_font_description_copy_static(gui.norm_font);
+    pango_font_description_set_weight(bold_font_desc, PANGO_WEIGHT_BOLD);
+
+    bold_font = pango_context_load_font(gui.text_context, bold_font_desc);
+    /*
+     * The comparison relies on the unique handle nature of a PangoFont*,
+     * i.e. it's assumed that a different PangoFont* won't refer to the
+     * same font.  Seems to work, and failing here isn't critical anyway.
+     */
+    if (bold_font != NULL)
+    {
+	gui.font_can_bold = (bold_font != plain_font);
+	g_object_unref(bold_font);
+    }
+
+    pango_font_description_free(bold_font_desc);
+    if (bold_font != NULL && gui.font_can_bold)
+	g_object_unref(plain_font);
+}
+
+static PangoEngineShape *default_shape_engine = NULL;
+
+/*
+ * Create a map from ASCII characters in the range [32,126] to glyphs
+ * of the current font.  This is used by gui_gtk2_draw_string() to skip
+ * the itemize and shaping process for the most common case.
+ */
+    static void
+ascii_glyph_table_init(void)
+{
+    char_u	    ascii_chars[2 * 128];
+    PangoAttrList   *attr_list;
+    GList	    *item_list;
+    int		    i;
+
+    if (gui.ascii_glyphs != NULL)
+	pango_glyph_string_free(gui.ascii_glyphs);
+    if (gui.ascii_font != NULL)
+	g_object_unref(gui.ascii_font);
+
+    gui.ascii_glyphs = NULL;
+    gui.ascii_font   = NULL;
+
+    // For safety, fill in question marks for the control characters.
+    // Put a space between characters to avoid shaping.
+    for (i = 0; i < 128; ++i)
+    {
+	if (i >= 32 && i < 127)
+	    ascii_chars[2 * i] = i;
+	else
+	    ascii_chars[2 * i] = '?';
+	ascii_chars[2 * i + 1] = ' ';
+    }
+
+    attr_list = pango_attr_list_new();
+    item_list = pango_itemize(gui.text_context, (const char *)ascii_chars,
+			      0, sizeof(ascii_chars), attr_list, NULL);
+
+    if (item_list != NULL && item_list->next == NULL) // play safe
+    {
+	PangoItem   *item;
+	int	    width;
+
+	item  = (PangoItem *)item_list->data;
+	width = gui.char_width * PANGO_SCALE;
+
+	// Remember the shape engine used for ASCII.
+	default_shape_engine = item->analysis.shape_engine;
+
+	gui.ascii_font = item->analysis.font;
+	g_object_ref(gui.ascii_font);
+
+	gui.ascii_glyphs = pango_glyph_string_new();
+
+	pango_shape((const char *)ascii_chars, sizeof(ascii_chars),
+		    &item->analysis, gui.ascii_glyphs);
+
+	g_return_if_fail(gui.ascii_glyphs->num_glyphs == sizeof(ascii_chars));
+
+	for (i = 0; i < gui.ascii_glyphs->num_glyphs; ++i)
+	{
+	    PangoGlyphGeometry *geom;
+
+	    geom = &gui.ascii_glyphs->glyphs[i].geometry;
+	    geom->x_offset += MAX(0, width - geom->width) / 2;
+	    geom->width = width;
+	}
+    }
+
+    // TODO: is this type cast OK?
+    g_list_foreach(item_list, (GFunc)(void *)&pango_item_free, NULL);
+    g_list_free(item_list);
+    pango_attr_list_unref(attr_list);
+}
+
+/*
+ * Initialize Vim to use the font or fontset with the given name.
+ * Return FAIL if the font could not be loaded, OK otherwise.
+ */
+    int
+gui_mch_init_font(char_u *font_name, int fontset UNUSED)
+{
+    PangoFontDescription    *font_desc;
+    PangoLayout		    *layout;
+    int			    width;
+
+    // If font_name is NULL, this means to use the default, which should
+    // be present on all proper Pango/fontconfig installations.
+    if (font_name == NULL)
+	font_name = (char_u *)DEFAULT_FONT;
+
+    font_desc = gui_mch_get_font(font_name, FALSE);
+
+    if (font_desc == NULL)
+	return FAIL;
+
+    gui_mch_free_font(gui.norm_font);
+    gui.norm_font = font_desc;
+
+    pango_context_set_font_description(gui.text_context, font_desc);
+
+    layout = pango_layout_new(gui.text_context);
+    pango_layout_set_text(layout, "MW", 2);
+    pango_layout_get_size(layout, &width, NULL);
+    /*
+     * Set char_width to half the width obtained from pango_layout_get_size()
+     * for CJK fixed_width/bi-width fonts.  An unpatched version of Xft leads
+     * Pango to use the same width for both non-CJK characters (e.g. Latin
+     * letters and numbers) and CJK characters.  This results in 's p a c e d
+     * o u t' rendering when a CJK 'fixed width' font is used. To work around
+     * that, divide the width returned by Pango by 2 if cjk_width is equal to
+     * width for CJK fonts.
+     *
+     * For related bugs, see:
+     * http://bugzilla.gnome.org/show_bug.cgi?id=106618
+     * http://bugzilla.gnome.org/show_bug.cgi?id=106624
+     *
+     * With this, for all four of the following cases, Vim works fine:
+     *	   guifont=CJK_fixed_width_font
+     *	   guifont=Non_CJK_fixed_font
+     *	   guifont=Non_CJK_fixed_font,CJK_Fixed_font
+     *	   guifont=Non_CJK_fixed_font guifontwide=CJK_fixed_font
+     */
+    if (is_cjk_font(gui.norm_font))
+    {
+	int cjk_width;
+
+	// Measure the text extent of U+4E00 and U+4E8C
+	pango_layout_set_text(layout, "\344\270\200\344\272\214", -1);
+	pango_layout_get_size(layout, &cjk_width, NULL);
+
+	if (width == cjk_width)  // Xft not patched
+	    width /= 2;
+    }
+    g_object_unref(layout);
+
+    gui.char_width = (width / 2 + PANGO_SCALE - 1) / PANGO_SCALE;
+
+    // A zero width may cause a crash.	Happens for semi-invalid fontsets.
+    if (gui.char_width <= 0)
+	gui.char_width = 8;
+
+    gui_mch_adjust_charheight();
+
+    // Set the fontname, which will be used for information purposes
+    hl_set_font_name(font_name);
+
+    get_styled_font_variants();
+    ascii_glyph_table_init();
+
+    // Avoid unnecessary overhead if 'guifontwide' is equal to 'guifont'.
+    if (gui.wide_font != NULL
+	&& pango_font_description_equal(gui.norm_font, gui.wide_font))
+    {
+	pango_font_description_free(gui.wide_font);
+	gui.wide_font = NULL;
+    }
+
+    if (gui_mch_maximized())
+    {
+	// Update lines and columns in accordance with the new font, keep the
+	// window maximized.
+	gui_mch_newfont();
+    }
+    else
+    {
+	// Preserve the logical dimensions of the screen.
+	update_window_manager_hints(0, 0);
+    }
+
+    return OK;
+}
+
+/*
+ * Get a reference to the font "name".
+ * Return zero for failure.
+ */
+    GuiFont
+gui_mch_get_font(char_u *name, int report_error)
+{
+    PangoFontDescription    *font;
+
+    // can't do this when GUI is not running
+    if (!gui.in_use || name == NULL)
+	return NULL;
+
+    if (output_conv.vc_type != CONV_NONE)
+    {
+	char_u *buf;
+
+	buf = string_convert(&output_conv, name, NULL);
+	if (buf != NULL)
+	{
+	    font = pango_font_description_from_string((const char *)buf);
+	    vim_free(buf);
+	}
+	else
+	    font = NULL;
+    }
+    else
+	font = pango_font_description_from_string((const char *)name);
+
+    if (font != NULL)
+    {
+	PangoFont *real_font;
+
+	// pango_context_load_font() bails out if no font size is set
+	if (pango_font_description_get_size(font) <= 0)
+	    pango_font_description_set_size(font, 10 * PANGO_SCALE);
+
+	real_font = pango_context_load_font(gui.text_context, font);
+
+	if (real_font == NULL)
+	{
+	    pango_font_description_free(font);
+	    font = NULL;
+	}
+	else
+	    g_object_unref(real_font);
+    }
+
+    if (font == NULL)
+    {
+	if (report_error)
+	    semsg(_((char *)e_unknown_font_str), name);
+	return NULL;
+    }
+
+    return font;
+}
+
+#if defined(FEAT_EVAL) || defined(PROTO)
+/*
+ * Return the name of font "font" in allocated memory.
+ */
+    char_u *
+gui_mch_get_fontname(GuiFont font, char_u *name UNUSED)
+{
+    if (font != NOFONT)
+    {
+	char	*pangoname = pango_font_description_to_string(font);
+
+	if (pangoname != NULL)
+	{
+	    char_u	*s = vim_strsave((char_u *)pangoname);
+
+	    g_free(pangoname);
+	    return s;
+	}
+    }
+    return NULL;
+}
+#endif
+
+/*
+ * If a font is not going to be used, free its structure.
+ */
+    void
+gui_mch_free_font(GuiFont font)
+{
+    if (font != NOFONT)
+	pango_font_description_free(font);
+}
+
+/*
+ * Cmdline expansion for setting 'guifont' / 'guifontwide'. Will enumerate
+ * through all fonts for completion. When setting 'guifont' it will only show
+ * monospace fonts as it's unlikely other fonts would be useful.
+ */
+    void
+gui_mch_expand_font(optexpand_T *args, void *param, int (*add_match)(char_u *val))
+{
+    PangoFontFamily	**font_families = NULL;
+    int			n_families = 0;
+    int			wide = *(int *)param;
+
+    if (args->oe_include_orig_val && *args->oe_opt_value == NUL && !wide)
+    {
+	// If guifont is empty, and we want to fill in the orig value, suggest
+	// the default so the user can modify it.
+	if (add_match((char_u *)DEFAULT_FONT) != OK)
+	    return;
+    }
+
+    pango_context_list_families(
+	    gui.text_context,
+	    &font_families,
+	    &n_families);
+
+    for (int i = 0; i < n_families; i++)
+    {
+	if (!wide && !pango_font_family_is_monospace(font_families[i]))
+	    continue;
+
+	const char* fam_name = pango_font_family_get_name(font_families[i]);
+	if (input_conv.vc_type != CONV_NONE)
+	{
+	    char_u *buf = string_convert(&input_conv, (char_u*)fam_name, NULL);
+	    if (buf != NULL)
+	    {
+		if (add_match(buf) != OK)
+		{
+		    vim_free(buf);
+		    break;
+		}
+		vim_free(buf);
+	    }
+	    else
+		break;
+	}
+	else
+	{
+	    if (add_match((char_u *)fam_name) != OK)
+		break;
+	}
+    }
+
+    g_free(font_families);
+}
+
+/*
+ * Return the Pixel value (color) for the given color name.
+ *
+ * Return INVALCOLOR for error.
+ */
+    guicolor_T
+gui_mch_get_color(char_u *name)
+{
+    guicolor_T color = INVALCOLOR;
+
+    if (!gui.in_use)		// can't do this when GUI not running
+	return color;
+
+    if (name != NULL)
+	color = gui_get_color_cmn(name);
+
+#if GTK_CHECK_VERSION(3,0,0)
+    return color;
+#else
+    if (color == INVALCOLOR)
+	return INVALCOLOR;
+
+    return gui_mch_get_rgb_color(
+	    (color & 0xff0000) >> 16,
+	    (color & 0xff00) >> 8,
+	    color & 0xff);
+#endif
+}
+
+/*
+ * Return the Pixel value (color) for the given RGB values.
+ * Return INVALCOLOR for error.
+ */
+    guicolor_T
+gui_mch_get_rgb_color(int r, int g, int b)
+{
+#if GTK_CHECK_VERSION(3,0,0)
+    return gui_get_rgb_color_cmn(r, g, b);
+#else
+    GdkColor gcolor;
+    int ret;
+
+    gcolor.red = (guint16)(r / 255.0 * 65535 + 0.5);
+    gcolor.green = (guint16)(g / 255.0 * 65535 + 0.5);
+    gcolor.blue = (guint16)(b / 255.0 * 65535 + 0.5);
+
+    ret = gdk_colormap_alloc_color(gtk_widget_get_colormap(gui.drawarea),
+	    &gcolor, FALSE, TRUE);
+
+    return ret != 0 ? (guicolor_T)gcolor.pixel : INVALCOLOR;
+#endif
+}
+
+/*
+ * Set the current text foreground color.
+ */
+    void
+gui_mch_set_fg_color(guicolor_T color)
+{
+#if GTK_CHECK_VERSION(3,0,0)
+    *gui.fgcolor = color_to_rgba(color);
+#else
+    gui.fgcolor->pixel = (unsigned long)color;
+#endif
+}
+
+/*
+ * Set the current text background color.
+ */
+    void
+gui_mch_set_bg_color(guicolor_T color)
+{
+#if GTK_CHECK_VERSION(3,0,0)
+    *gui.bgcolor = color_to_rgba(color);
+#else
+    gui.bgcolor->pixel = (unsigned long)color;
+#endif
+}
+
+/*
+ * Set the current text special color.
+ */
+    void
+gui_mch_set_sp_color(guicolor_T color)
+{
+#if GTK_CHECK_VERSION(3,0,0)
+    *gui.spcolor = color_to_rgba(color);
+#else
+    gui.spcolor->pixel = (unsigned long)color;
+#endif
+}
+
+/*
+ * Function-like convenience macro for the sake of efficiency.
+ */
+#define INSERT_PANGO_ATTR(Attribute, AttrList, Start, End)  \
+    G_STMT_START{					    \
+	PangoAttribute *tmp_attr_;			    \
+	tmp_attr_ = (Attribute);			    \
+	tmp_attr_->start_index = (Start);		    \
+	tmp_attr_->end_index = (End);			    \
+	pango_attr_list_insert((AttrList), tmp_attr_);	    \
+    }G_STMT_END
+
+    static void
+apply_wide_font_attr(char_u *s, int len, PangoAttrList *attr_list)
+{
+    char_u  *start = NULL;
+    char_u  *p;
+    int	    uc;
+
+    for (p = s; p < s + len; p += utf_byte2len(*p))
+    {
+	uc = utf_ptr2char(p);
+
+	if (start == NULL)
+	{
+	    if (uc >= 0x80 && utf_char2cells(uc) == 2)
+		start = p;
+	}
+	else if (uc < 0x80 // optimization shortcut
+		 || (utf_char2cells(uc) != 2 && !utf_iscomposing(uc)))
+	{
+	    INSERT_PANGO_ATTR(pango_attr_font_desc_new(gui.wide_font),
+			      attr_list, start - s, p - s);
+	    start = NULL;
+	}
+    }
+
+    if (start != NULL)
+	INSERT_PANGO_ATTR(pango_attr_font_desc_new(gui.wide_font),
+			  attr_list, start - s, len);
+}
+
+    static int
+count_cluster_cells(char_u *s, PangoItem *item,
+		    PangoGlyphString* glyphs, int i,
+		    int *cluster_width,
+		    int *last_glyph_rbearing)
+{
+    char_u  *p;
+    int	    next;	// glyph start index of next cluster
+    int	    start, end; // string segment of current cluster
+    int	    width;	// real cluster width in Pango units
+    int	    uc;
+    int	    cellcount = 0;
+
+    width = glyphs->glyphs[i].geometry.width;
+
+    for (next = i + 1; next < glyphs->num_glyphs; ++next)
+    {
+	if (glyphs->glyphs[next].attr.is_cluster_start)
+	    break;
+	else if (glyphs->glyphs[next].geometry.width > width)
+	    width = glyphs->glyphs[next].geometry.width;
+    }
+
+    start = item->offset + glyphs->log_clusters[i];
+    end   = item->offset + ((next < glyphs->num_glyphs) ?
+			    glyphs->log_clusters[next] : item->length);
+
+    for (p = s + start; p < s + end; p += utf_byte2len(*p))
+    {
+	uc = utf_ptr2char(p);
+	if (uc < 0x80)
+	    ++cellcount;
+	else if (!utf_iscomposing(uc))
+	    cellcount += utf_char2cells(uc);
+    }
+
+    if (last_glyph_rbearing != NULL
+	    && cellcount > 0 && next == glyphs->num_glyphs)
+    {
+	PangoRectangle ink_rect;
+	/*
+	 * If a certain combining mark had to be taken from a non-monospace
+	 * font, we have to compensate manually by adapting x_offset according
+	 * to the ink extents of the previous glyph.
+	 */
+	pango_font_get_glyph_extents(item->analysis.font,
+				     glyphs->glyphs[i].glyph,
+				     &ink_rect, NULL);
+
+	if (PANGO_RBEARING(ink_rect) > 0)
+	    *last_glyph_rbearing = PANGO_RBEARING(ink_rect);
+    }
+
+    if (cellcount > 0)
+	*cluster_width = width;
+
+    return cellcount;
+}
+
+/*
+ * If there are only combining characters in the cluster, we cannot just
+ * change the width of the previous glyph since there is none.	Therefore
+ * some guesswork is needed.
+ *
+ * If ink_rect.x is negative Pango apparently has taken care of the composing
+ * by itself.  Actually setting x_offset = 0 should be sufficient then, but due
+ * to problems with composing from different fonts we still need to fine-tune
+ * x_offset to avoid ugliness.
+ *
+ * If ink_rect.x is not negative, force overstriking by pointing x_offset to
+ * the position of the previous glyph.	Apparently this happens only with old
+ * X fonts which don't provide the special combining information needed by
+ * Pango.
+ */
+    static void
+setup_zero_width_cluster(PangoItem *item, PangoGlyphInfo *glyph,
+			 int last_cellcount, int last_cluster_width,
+			 int last_glyph_rbearing)
+{
+    PangoRectangle  ink_rect;
+    PangoRectangle  logical_rect;
+    int		    width;
+
+    width = last_cellcount * gui.char_width * PANGO_SCALE;
+    glyph->geometry.x_offset = -width + MAX(0, width - last_cluster_width) / 2;
+    glyph->geometry.width = 0;
+
+    pango_font_get_glyph_extents(item->analysis.font,
+				 glyph->glyph,
+				 &ink_rect, &logical_rect);
+    if (ink_rect.x < 0)
+    {
+	glyph->geometry.x_offset += last_glyph_rbearing;
+	glyph->geometry.y_offset  = logical_rect.height
+		- (gui.char_height - p_linespace) * PANGO_SCALE;
+    }
+    else
+	// If the accent width is smaller than the cluster width, position it
+	// in the middle.
+	glyph->geometry.x_offset = -width + MAX(0, width - ink_rect.width) / 2;
+}
+
+#if GTK_CHECK_VERSION(3,0,0)
+    static void
+draw_glyph_string(int row, int col, int num_cells, int flags,
+		  PangoFont *font, PangoGlyphString *glyphs,
+		  cairo_t *cr)
+#else
+    static void
+draw_glyph_string(int row, int col, int num_cells, int flags,
+		  PangoFont *font, PangoGlyphString *glyphs)
+#endif
+{
+    if (!(flags & DRAW_TRANSP))
+    {
+#if GTK_CHECK_VERSION(3,0,0)
+	cairo_set_source_rgba(cr,
+		gui.bgcolor->red, gui.bgcolor->green, gui.bgcolor->blue,
+		gui.bgcolor->alpha);
+	cairo_rectangle(cr,
+			FILL_X(col), FILL_Y(row),
+			num_cells * gui.char_width, gui.char_height);
+	cairo_fill(cr);
+#else
+	gdk_gc_set_foreground(gui.text_gc, gui.bgcolor);
+
+	gdk_draw_rectangle(gui.drawarea->window,
+			   gui.text_gc,
+			   TRUE,
+			   FILL_X(col),
+			   FILL_Y(row),
+			   num_cells * gui.char_width,
+			   gui.char_height);
+#endif
+    }
+
+#if GTK_CHECK_VERSION(3,0,0)
+    cairo_set_source_rgba(cr,
+	    gui.fgcolor->red, gui.fgcolor->green, gui.fgcolor->blue,
+	    gui.fgcolor->alpha);
+    cairo_move_to(cr, TEXT_X(col), TEXT_Y(row));
+    pango_cairo_show_glyph_string(cr, font, glyphs);
+#else
+    gdk_gc_set_foreground(gui.text_gc, gui.fgcolor);
+
+    gdk_draw_glyphs(gui.drawarea->window,
+		    gui.text_gc,
+		    font,
+		    TEXT_X(col),
+		    TEXT_Y(row),
+		    glyphs);
+#endif
+
+    // redraw the contents with an offset of 1 to emulate bold
+    if ((flags & DRAW_BOLD) && !gui.font_can_bold)
+#if GTK_CHECK_VERSION(3,0,0)
+    {
+	cairo_set_source_rgba(cr,
+		gui.fgcolor->red, gui.fgcolor->green, gui.fgcolor->blue,
+		gui.fgcolor->alpha);
+	cairo_move_to(cr, TEXT_X(col) + 1, TEXT_Y(row));
+	pango_cairo_show_glyph_string(cr, font, glyphs);
+    }
+#else
+	gdk_draw_glyphs(gui.drawarea->window,
+			gui.text_gc,
+			font,
+			TEXT_X(col) + 1,
+			TEXT_Y(row),
+			glyphs);
+#endif
+}
+
+/*
+ * Draw underline and undercurl at the bottom of the character cell.
+ */
+#if GTK_CHECK_VERSION(3,0,0)
+    static void
+draw_under(int flags, int row, int col, int cells, cairo_t *cr)
+#else
+    static void
+draw_under(int flags, int row, int col, int cells)
+#endif
+{
+    int			i;
+    int			offset;
+    static const int	val[8] = {1, 0, 0, 0, 1, 2, 2, 2 };
+    int			y = FILL_Y(row + 1) - 1;
+
+    // Undercurl: draw curl at the bottom of the character cell.
+    if (flags & DRAW_UNDERC)
+    {
+#if GTK_CHECK_VERSION(3,0,0)
+	cairo_set_line_width(cr, 1.0);
+	cairo_set_line_cap(cr, CAIRO_LINE_CAP_BUTT);
+	cairo_set_source_rgba(cr,
+		gui.spcolor->red, gui.spcolor->green, gui.spcolor->blue,
+		gui.spcolor->alpha);
+	cairo_move_to(cr, FILL_X(col) + 1, y - 2 + 0.5);
+	for (i = FILL_X(col) + 1; i < FILL_X(col + cells); ++i)
+	{
+	    offset = val[i % 8];
+	    cairo_line_to(cr, i, y - offset + 0.5);
+	}
+	cairo_stroke(cr);
+#else
+	gdk_gc_set_foreground(gui.text_gc, gui.spcolor);
+	for (i = FILL_X(col); i < FILL_X(col + cells); ++i)
+	{
+	    offset = val[i % 8];
+	    gdk_draw_point(gui.drawarea->window, gui.text_gc, i, y - offset);
+	}
+	gdk_gc_set_foreground(gui.text_gc, gui.fgcolor);
+#endif
+    }
+
+    // Draw a strikethrough line
+    if (flags & DRAW_STRIKE)
+    {
+#if GTK_CHECK_VERSION(3,0,0)
+	cairo_set_line_width(cr, 1.0);
+	cairo_set_line_cap(cr, CAIRO_LINE_CAP_BUTT);
+	cairo_set_source_rgba(cr,
+		gui.spcolor->red, gui.spcolor->green, gui.spcolor->blue,
+		gui.spcolor->alpha);
+	cairo_move_to(cr, FILL_X(col), y + 1 - gui.char_height/2 + 0.5);
+	cairo_line_to(cr, FILL_X(col + cells), y + 1 - gui.char_height/2 + 0.5);
+	cairo_stroke(cr);
+#else
+	gdk_gc_set_foreground(gui.text_gc, gui.spcolor);
+	gdk_draw_line(gui.drawarea->window, gui.text_gc,
+		      FILL_X(col), y + 1 - gui.char_height/2,
+		      FILL_X(col + cells), y + 1 - gui.char_height/2);
+	gdk_gc_set_foreground(gui.text_gc, gui.fgcolor);
+#endif
+    }
+
+    // Underline: draw a line at the bottom of the character cell.
+    if (flags & DRAW_UNDERL)
+    {
+	// When p_linespace is 0, overwrite the bottom row of pixels.
+	// Otherwise put the line just below the character.
+	if (p_linespace > 1)
+	    y -= p_linespace - 1;
+#if GTK_CHECK_VERSION(3,0,0)
+	cairo_set_line_width(cr, 1.0);
+	cairo_set_line_cap(cr, CAIRO_LINE_CAP_BUTT);
+	cairo_set_source_rgba(cr,
+		gui.fgcolor->red, gui.fgcolor->green, gui.fgcolor->blue,
+		gui.fgcolor->alpha);
+	cairo_move_to(cr, FILL_X(col), y + 0.5);
+	cairo_line_to(cr, FILL_X(col + cells), y + 0.5);
+	cairo_stroke(cr);
+#else
+	gdk_draw_line(gui.drawarea->window, gui.text_gc,
+		      FILL_X(col), y,
+		      FILL_X(col + cells) - 1, y);
+#endif
+    }
+}
+
+    int
+gui_gtk2_draw_string(int row, int col, char_u *s, int len, int flags)
+{
+    char_u	*conv_buf = NULL;   // result of UTF-8 conversion
+    char_u	*new_conv_buf;
+    int		convlen;
+    char_u	*sp, *bp;
+    int		plen;
+    int		len_sum;	// return value needs to add up since we are
+				// printing substrings
+    int		byte_sum;	// byte position in string
+    char_u	*cs;		// current *s pointer
+    int		needs_pango;	// look ahead, 0=ascii 1=unicode/ligatures
+    int		should_need_pango = FALSE;
+    int		slen;
+    int		is_ligature;
+    int		is_utf8;
+    char_u	backup_ch;
+
+    if (gui.text_context == NULL || gtk_widget_get_window(gui.drawarea) == NULL)
+	return len;
+
+    if (output_conv.vc_type != CONV_NONE)
+    {
+	/*
+	 * Convert characters from 'encoding' to 'termencoding', which is set
+	 * to UTF-8 by gui_mch_init().	did_set_string_option() in option.c
+	 * prohibits changing this to something else than UTF-8 if the GUI is
+	 * in use.
+	 */
+	convlen = len;
+	conv_buf = string_convert(&output_conv, s, &convlen);
+	g_return_val_if_fail(conv_buf != NULL, len);
+
+	// Correct for differences in char width: some chars are
+	// double-wide in 'encoding' but single-wide in utf-8.  Add a space to
+	// compensate for that.
+	for (sp = s, bp = conv_buf; sp < s + len && bp < conv_buf + convlen; )
+	{
+	    plen = utf_ptr2len(bp);
+	    if ((*mb_ptr2cells)(sp) == 2 && utf_ptr2cells(bp) == 1)
+	    {
+		new_conv_buf = alloc(convlen + 2);
+		if (new_conv_buf == NULL)
+		    return len;
+		plen += bp - conv_buf;
+		mch_memmove(new_conv_buf, conv_buf, plen);
+		new_conv_buf[plen] = ' ';
+		mch_memmove(new_conv_buf + plen + 1, conv_buf + plen,
+							  convlen - plen + 1);
+		vim_free(conv_buf);
+		conv_buf = new_conv_buf;
+		++convlen;
+		bp = conv_buf + plen;
+		plen = 1;
+	    }
+	    sp += (*mb_ptr2len)(sp);
+	    bp += plen;
+	}
+	s = conv_buf;
+	len = convlen;
+    }
+
+    /*
+     * Ligature support and complex utf-8 char optimization:
+     * String received to output to screen can print using pre-cached glyphs
+     * (fast) or Pango (slow). Ligatures and multibype utf-8 must use Pango.
+     * Since we receive mixed content string, split it into logical segments
+     * that are guaranteed to go through glyphs as much as possible. Since
+     * single ligature char prints as ascii, print it that way.
+     */
+    len_sum = 0;    // return value needs to add up since we are printing
+		    // substrings
+    byte_sum = 0;
+    cs = s;
+    // First char decides starting needs_pango mode, 0=ascii 1=utf8/ligatures.
+    // Even if it is ligature char, two chars or more make ligature.
+    // Ascii followed by utf8 is also going through pango.
+    is_utf8 = (*cs & 0x80);
+    is_ligature = gui.ligatures_map[*cs] && (len > 1);
+    if (is_ligature)
+	is_ligature = gui.ligatures_map[*(cs + 1)];
+    if (!is_utf8 && len > 1)
+	is_utf8 = (*(cs + 1) & 0x80) != 0;
+    needs_pango = is_utf8 || is_ligature;
+
+    // split string into ascii and non-ascii (ligatures + utf-8) substrings,
+    // print glyphs or use Pango
+    while (cs < s + len)
+    {
+	slen = 0;
+	while (slen < (len - byte_sum))
+	{
+	    is_ligature = gui.ligatures_map[*(cs + slen)];
+	    // look ahead, single ligature char between ascii is ascii
+	    if (is_ligature && !needs_pango)
+	    {
+		if ((slen + 1) < (len - byte_sum))
+		    is_ligature = gui.ligatures_map[*(cs + slen + 1)];
+		else
+		    is_ligature = 0;
+	    }
+	    is_utf8 = *(cs + slen) & 0x80;
+	    // ascii followed by utf8 could be combining
+	    // if so send it through pango
+	    if ((!is_utf8) && ((slen + 1) < (len - byte_sum)))
+		is_utf8 = (*(cs + slen + 1) & 0x80);
+	    should_need_pango = (is_ligature || is_utf8);
+	    if (needs_pango != should_need_pango) // mode switch
+		break;
+	    if (needs_pango)
+	    {
+		if (is_ligature)
+		{
+		    slen++; // ligature char by char
+		}
+		else // is_utf8
+		{
+		    if ((*(cs + slen) & 0xC0) == 0x80)
+		    {
+			// a continuation, find next 0xC0 != 0x80 but don't
+			// include it
+			while ((slen < (len - byte_sum))
+					    && ((*(cs + slen) & 0xC0) == 0x80))
+			{
+			    slen++;
+			}
+		    }
+		    else if ((*(cs + slen) & 0xE0) == 0xC0)
+		    {
+			// + one byte utf8
+			slen++;
+		    }
+		    else if ((*(cs + slen) & 0xF0) == 0xE0)
+		    {
+			// + two bytes utf8
+			slen += 2;
+		    }
+		    else if ((*(cs + slen) & 0xF8) == 0xF0)
+		    {
+			// + three bytes utf8
+			slen += 3;
+		    }
+		    else
+		    {
+			// this should not happen, try moving forward, Pango
+			// will catch it
+			slen++;
+		    }
+		}
+	    }
+	    else
+	    {
+		slen++; // ascii
+	    }
+	}
+
+	if (slen < len)
+	{
+	    // temporarily zero terminate substring, print, restore char, wrap
+	    backup_ch = *(cs + slen);
+	    *(cs + slen) = NUL;
+	}
+	len_sum += gui_gtk2_draw_string_ext(row, col + len_sum,
+						 cs, slen, flags, needs_pango);
+	if (slen < len)
+	    *(cs + slen) = backup_ch;
+	cs += slen;
+	byte_sum += slen;
+	needs_pango = should_need_pango;
+    }
+    vim_free(conv_buf);
+    return len_sum;
+}
+
+    int
+gui_gtk2_draw_string_ext(
+	int	row,
+	int	col,
+	char_u	*s,
+	int	len,
+	int	flags,
+	int	force_pango)
+{
+    GdkRectangle	area;		    // area for clip mask
+    PangoGlyphString	*glyphs;	    // glyphs of current item
+    int			column_offset = 0;  // column offset in cells
+    int			i;
+#if GTK_CHECK_VERSION(3,0,0)
+    cairo_t		*cr;
+#endif
+
+    /*
+     * Restrict all drawing to the current screen line in order to prevent
+     * fuzzy font lookups from messing up the screen.
+     */
+    area.x = gui.border_offset;
+    area.y = FILL_Y(row);
+    area.width	= gui.num_cols * gui.char_width;
+    area.height = gui.char_height;
+
+#if GTK_CHECK_VERSION(3,0,0)
+    cr = cairo_create(gui.surface);
+    cairo_rectangle(cr, area.x, area.y, area.width, area.height);
+    cairo_clip(cr);
+#else
+    gdk_gc_set_clip_origin(gui.text_gc, 0, 0);
+    gdk_gc_set_clip_rectangle(gui.text_gc, &area);
+#endif
+
+    glyphs = pango_glyph_string_new();
+
+    /*
+     * Optimization hack:  If possible, skip the itemize and shaping process
+     * for pure ASCII strings.	This optimization is particularly effective
+     * because Vim draws space characters to clear parts of the screen.
+     */
+    if (!(flags & DRAW_ITALIC)
+	    && !((flags & DRAW_BOLD) && gui.font_can_bold)
+	    && gui.ascii_glyphs != NULL
+	    && !force_pango)
+    {
+	char_u *p;
+
+	for (p = s; p < s + len; ++p)
+	    if (*p & 0x80)
+		goto not_ascii;
+
+	pango_glyph_string_set_size(glyphs, len);
+
+	for (i = 0; i < len; ++i)
+	{
+	    glyphs->glyphs[i] = gui.ascii_glyphs->glyphs[2 * s[i]];
+	    glyphs->log_clusters[i] = i;
+	}
+
+#if GTK_CHECK_VERSION(3,0,0)
+	draw_glyph_string(row, col, len, flags, gui.ascii_font, glyphs, cr);
+#else
+	draw_glyph_string(row, col, len, flags, gui.ascii_font, glyphs);
+#endif
+
+	column_offset = len;
+    }
+    else
+not_ascii:
+    {
+	PangoAttrList	*attr_list;
+	GList		*item_list;
+	int		cluster_width;
+	int		last_glyph_rbearing;
+	int		cells = 0;  // cells occupied by current cluster
+
+	// Safety check: pango crashes when invoked with invalid utf-8
+	// characters.
+	if (!utf_valid_string(s, s + len))
+	{
+	    column_offset = len;
+	    goto skipitall;
+	}
+
+	// original width of the current cluster
+	cluster_width = PANGO_SCALE * gui.char_width;
+
+	// right bearing of the last non-composing glyph
+	last_glyph_rbearing = PANGO_SCALE * gui.char_width;
+
+	attr_list = pango_attr_list_new();
+
+	// If 'guifontwide' is set then use that for double-width characters.
+	// Otherwise just go with 'guifont' and let Pango do its thing.
+	if (gui.wide_font != NULL)
+	    apply_wide_font_attr(s, len, attr_list);
+
+	if ((flags & DRAW_BOLD) && gui.font_can_bold)
+	    INSERT_PANGO_ATTR(pango_attr_weight_new(PANGO_WEIGHT_BOLD),
+			      attr_list, 0, len);
+	if (flags & DRAW_ITALIC)
+	    INSERT_PANGO_ATTR(pango_attr_style_new(PANGO_STYLE_ITALIC),
+			      attr_list, 0, len);
+	/*
+	 * Break the text into segments with consistent directional level
+	 * and shaping engine.	Pure Latin text needs only a single segment,
+	 * so there's no need to worry about the loop's efficiency.  Better
+	 * try to optimize elsewhere, e.g. reducing exposes and stuff :)
+	 */
+	item_list = pango_itemize(gui.text_context,
+				  (const char *)s, 0, len, attr_list, NULL);
+
+	while (item_list != NULL)
+	{
+	    PangoItem	*item;
+	    int		item_cells = 0; // item length in cells
+
+	    item = (PangoItem *)item_list->data;
+	    item_list = g_list_delete_link(item_list, item_list);
+	    /*
+	     * Increment the bidirectional embedding level by 1 if it is not
+	     * even.  An odd number means the output will be RTL, but we don't
+	     * want that since Vim handles right-to-left text on its own.  It
+	     * would probably be sufficient to just set level = 0, but you can
+	     * never know :)
+	     *
+	     * Unfortunately we can't take advantage of Pango's ability to
+	     * render both LTR and RTL at the same time.  In order to support
+	     * that, Vim's main screen engine would have to make use of Pango
+	     * functionality.
+	     */
+	    item->analysis.level = (item->analysis.level + 1) & (~1U);
+
+	    // HACK: Overrule the shape engine, we don't want shaping to be
+	    // done, because drawing the cursor would change the display.
+	    item->analysis.shape_engine = default_shape_engine;
+
+#ifdef HAVE_PANGO_SHAPE_FULL
+	    pango_shape_full((const char *)s + item->offset, item->length,
+		    (const char *)s, len, &item->analysis, glyphs);
+#else
+	    pango_shape((const char *)s + item->offset, item->length,
+			&item->analysis, glyphs);
+#endif
+	    /*
+	     * Fixed-width hack: iterate over the array and assign a fixed
+	     * width to each glyph, thus overriding the choice made by the
+	     * shaping engine.	We use utf_char2cells() to determine the
+	     * number of cells needed.
+	     *
+	     * Also perform all kind of dark magic to get composing
+	     * characters right (and pretty too of course).
+	     */
+	    for (i = 0; i < glyphs->num_glyphs; ++i)
+	    {
+		PangoGlyphInfo *glyph;
+
+		glyph = &glyphs->glyphs[i];
+
+		if (glyph->attr.is_cluster_start)
+		{
+		    int cellcount;
+
+		    cellcount = count_cluster_cells(
+			s, item, glyphs, i, &cluster_width,
+			(item_list != NULL) ? &last_glyph_rbearing : NULL);
+
+		    if (cellcount > 0)
+		    {
+			int width;
+
+			width = cellcount * gui.char_width * PANGO_SCALE;
+			glyph->geometry.x_offset +=
+					    MAX(0, width - cluster_width) / 2;
+			glyph->geometry.width = width;
+		    }
+		    else
+		    {
+			// If there are only combining characters in the
+			// cluster, we cannot just change the width of the
+			// previous glyph since there is none.	Therefore
+			// some guesswork is needed.
+			setup_zero_width_cluster(item, glyph, cells,
+						 cluster_width,
+						 last_glyph_rbearing);
+		    }
+
+		    item_cells += cellcount;
+		    cells = cellcount;
+		}
+		else if (i > 0)
+		{
+		    int width;
+
+		    // There is a previous glyph, so we deal with combining
+		    // characters the canonical way.
+		    // In some circumstances Pango uses a positive x_offset,
+		    // then use the width of the previous glyph for this one
+		    // and set the previous width to zero.
+		    // Otherwise we get a negative x_offset, Pango has already
+		    // positioned the combining char, keep the widths as they
+		    // are.
+		    // For both adjust the x_offset to position the glyph in
+		    // the middle.
+		    if (glyph->geometry.x_offset >= 0)
+		    {
+			glyphs->glyphs[i].geometry.width =
+					 glyphs->glyphs[i - 1].geometry.width;
+			glyphs->glyphs[i - 1].geometry.width = 0;
+		    }
+		    width = cells * gui.char_width * PANGO_SCALE;
+		    glyph->geometry.x_offset +=
+					    MAX(0, width - cluster_width) / 2;
+		}
+		else // i == 0 "cannot happen"
+		{
+		    glyph->geometry.width = 0;
+		}
+	    }
+
+	    //// Aaaaand action! **
+#if GTK_CHECK_VERSION(3,0,0)
+	    draw_glyph_string(row, col + column_offset, item_cells,
+			      flags, item->analysis.font, glyphs,
+			      cr);
+#else
+	    draw_glyph_string(row, col + column_offset, item_cells,
+			      flags, item->analysis.font, glyphs);
+#endif
+
+	    pango_item_free(item);
+
+	    column_offset += item_cells;
+	}
+
+	pango_attr_list_unref(attr_list);
+    }
+
+skipitall:
+    // Draw underline and undercurl.
+#if GTK_CHECK_VERSION(3,0,0)
+    draw_under(flags, row, col, column_offset, cr);
+#else
+    draw_under(flags, row, col, column_offset);
+#endif
+
+    pango_glyph_string_free(glyphs);
+
+#if GTK_CHECK_VERSION(3,0,0)
+    cairo_destroy(cr);
+    gtk_widget_queue_draw_area(gui.drawarea, area.x, area.y,
+	    area.width, area.height);
+#else
+    gdk_gc_set_clip_rectangle(gui.text_gc, NULL);
+#endif
+
+    return column_offset;
+}
+
+/*
+ * Return OK if the key with the termcap name "name" is supported.
+ */
+    int
+gui_mch_haskey(char_u *name)
+{
+    int i;
+
+    for (i = 0; special_keys[i].key_sym != 0; i++)
+	if (name[0] == special_keys[i].code0
+		&& name[1] == special_keys[i].code1)
+	    return OK;
+    return FAIL;
+}
+
+#if defined(FEAT_EVAL) || defined(PROTO)
+/*
+ * Return the text window-id and display.  Only required for X-based GUI's
+ */
+    int
+gui_get_x11_windis(Window *win, Display **dis)
+{
+    if (gui.mainwin != NULL && gtk_widget_get_window(gui.mainwin) != NULL)
+    {
+	*dis = GDK_WINDOW_XDISPLAY(gtk_widget_get_window(gui.mainwin));
+	*win = GDK_WINDOW_XID(gtk_widget_get_window(gui.mainwin));
+	return OK;
+    }
+
+    *dis = NULL;
+    *win = 0;
+    return FAIL;
+}
+#endif
+
+#if defined(FEAT_CLIENTSERVER) \
+	|| (defined(FEAT_X11) && defined(FEAT_CLIPBOARD)) || defined(PROTO)
+
+    Display *
+gui_mch_get_display(void)
+{
+    if (gui.mainwin != NULL && gtk_widget_get_window(gui.mainwin) != NULL)
+	return GDK_WINDOW_XDISPLAY(gtk_widget_get_window(gui.mainwin));
+    else
+	return NULL;
+}
+#endif
+
+    void
+gui_mch_beep(void)
+{
+    GdkDisplay *display;
+
+    if (gui.mainwin != NULL && gtk_widget_get_realized(gui.mainwin))
+	display = gtk_widget_get_display(gui.mainwin);
+    else
+	display = gdk_display_get_default();
+
+    if (display != NULL)
+	gdk_display_beep(display);
+}
+
+    void
+gui_mch_flash(int msec)
+{
+#if GTK_CHECK_VERSION(3,0,0)
+    // TODO Replace GdkGC with Cairo
+    (void)msec;
+#else
+    GdkGCValues	values;
+    GdkGC	*invert_gc;
+
+    if (gui.drawarea->window == NULL)
+	return;
+
+    values.foreground.pixel = gui.norm_pixel ^ gui.back_pixel;
+    values.background.pixel = gui.norm_pixel ^ gui.back_pixel;
+    values.function = GDK_XOR;
+    invert_gc = gdk_gc_new_with_values(gui.drawarea->window,
+				       &values,
+				       GDK_GC_FOREGROUND |
+				       GDK_GC_BACKGROUND |
+				       GDK_GC_FUNCTION);
+    gdk_gc_set_exposures(invert_gc,
+			 gui.visibility != GDK_VISIBILITY_UNOBSCURED);
+    /*
+     * Do a visual beep by changing back and forth in some undetermined way,
+     * the foreground and background colors.  This is due to the fact that
+     * there can't be really any prediction about the effects of XOR on
+     * arbitrary X11 servers. However this seems to be enough for what we
+     * intend it to do.
+     */
+    gdk_draw_rectangle(gui.drawarea->window, invert_gc,
+		       TRUE,
+		       0, 0,
+		       FILL_X((int)Columns) + gui.border_offset,
+		       FILL_Y((int)Rows) + gui.border_offset);
+
+    gui_mch_flush();
+    ui_delay((long)msec, TRUE);	// wait so many msec
+
+    gdk_draw_rectangle(gui.drawarea->window, invert_gc,
+		       TRUE,
+		       0, 0,
+		       FILL_X((int)Columns) + gui.border_offset,
+		       FILL_Y((int)Rows) + gui.border_offset);
+
+    gdk_gc_destroy(invert_gc);
+#endif
+}
+
+/*
+ * Invert a rectangle from row r, column c, for nr rows and nc columns.
+ */
+    void
+gui_mch_invert_rectangle(int r, int c, int nr, int nc)
+{
+#if GTK_CHECK_VERSION(3,0,0)
+    const GdkRectangle rect = {
+	FILL_X(c), FILL_Y(r), nc * gui.char_width, nr * gui.char_height
+    };
+    cairo_t * const cr = cairo_create(gui.surface);
+
+    cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 1.0);
+# if CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1,9,2)
+    cairo_set_operator(cr, CAIRO_OPERATOR_DIFFERENCE);
+# else
+    // Give an implementation for older cairo versions if necessary.
+# endif
+    cairo_rectangle(cr, rect.x, rect.y, rect.width, rect.height);
+    cairo_fill(cr);
+
+    cairo_destroy(cr);
+
+    gtk_widget_queue_draw_area(gui.drawarea, rect.x, rect.y,
+	    rect.width, rect.height);
+#else
+    GdkGCValues values;
+    GdkGC *invert_gc;
+
+    if (gui.drawarea->window == NULL)
+	return;
+
+    values.function = GDK_INVERT;
+    invert_gc = gdk_gc_new_with_values(gui.drawarea->window,
+				       &values,
+				       GDK_GC_FUNCTION);
+    gdk_gc_set_exposures(invert_gc, gui.visibility !=
+						   GDK_VISIBILITY_UNOBSCURED);
+    gdk_draw_rectangle(gui.drawarea->window, invert_gc,
+		       TRUE,
+		       FILL_X(c), FILL_Y(r),
+		       (nc) * gui.char_width, (nr) * gui.char_height);
+    gdk_gc_destroy(invert_gc);
+#endif
+}
+
+/*
+ * Iconify the GUI window.
+ */
+    void
+gui_mch_iconify(void)
+{
+    gtk_window_iconify(GTK_WINDOW(gui.mainwin));
+}
+
+#if defined(FEAT_EVAL) || defined(PROTO)
+/*
+ * Bring the Vim window to the foreground.
+ */
+    void
+gui_mch_set_foreground(void)
+{
+    // Just calling gtk_window_present() used to work in the past, but now this
+    // sequence appears to be needed:
+    // - Show the window on top of others.
+    // - Present the window (also shows it above others).
+    // - Do not the window on top of others (otherwise it would be stuck there).
+    gtk_window_set_keep_above(GTK_WINDOW(gui.mainwin), TRUE);
+    gui_may_flush();
+    gtk_window_present(GTK_WINDOW(gui.mainwin));
+    gui_may_flush();
+    gtk_window_set_keep_above(GTK_WINDOW(gui.mainwin), FALSE);
+    gui_may_flush();
+}
+#endif
+
+/*
+ * Draw a cursor without focus.
+ */
+    void
+gui_mch_draw_hollow_cursor(guicolor_T color)
+{
+    int		i = 1;
+#if GTK_CHECK_VERSION(3,0,0)
+    cairo_t    *cr;
+#endif
+
+    if (gtk_widget_get_window(gui.drawarea) == NULL)
+	return;
+
+#if GTK_CHECK_VERSION(3,0,0)
+    cr = cairo_create(gui.surface);
+#endif
+
+    gui_mch_set_fg_color(color);
+
+#if GTK_CHECK_VERSION(3,0,0)
+    cairo_set_source_rgba(cr,
+	    gui.fgcolor->red, gui.fgcolor->green, gui.fgcolor->blue,
+	    gui.fgcolor->alpha);
+#else
+    gdk_gc_set_foreground(gui.text_gc, gui.fgcolor);
+#endif
+    if (mb_lefthalve(gui.row, gui.col))
+	i = 2;
+#if GTK_CHECK_VERSION(3,0,0)
+    cairo_set_line_width(cr, 1.0);
+    cairo_set_line_cap(cr, CAIRO_LINE_CAP_BUTT);
+    cairo_rectangle(cr,
+	    FILL_X(gui.col) + 0.5, FILL_Y(gui.row) + 0.5,
+	    i * gui.char_width - 1, gui.char_height - 1);
+    cairo_stroke(cr);
+    cairo_destroy(cr);
+#else
+    gdk_draw_rectangle(gui.drawarea->window, gui.text_gc,
+	    FALSE,
+	    FILL_X(gui.col), FILL_Y(gui.row),
+	    i * gui.char_width - 1, gui.char_height - 1);
+#endif
+}
+
+/*
+ * Draw part of a cursor, "w" pixels wide, and "h" pixels high, using
+ * color "color".
+ */
+    void
+gui_mch_draw_part_cursor(int w, int h, guicolor_T color)
+{
+    if (gtk_widget_get_window(gui.drawarea) == NULL)
+	return;
+
+    gui_mch_set_fg_color(color);
+
+#if GTK_CHECK_VERSION(3,0,0)
+    {
+	cairo_t *cr;
+
+	cr = cairo_create(gui.surface);
+	cairo_set_source_rgba(cr,
+		gui.fgcolor->red, gui.fgcolor->green, gui.fgcolor->blue,
+		gui.fgcolor->alpha);
+	cairo_rectangle(cr,
+# ifdef FEAT_RIGHTLEFT
+	    // vertical line should be on the right of current point
+	    CURSOR_BAR_RIGHT ? FILL_X(gui.col + 1) - w :
+# endif
+	    FILL_X(gui.col), FILL_Y(gui.row) + gui.char_height - h,
+	    w, h);
+	cairo_fill(cr);
+	cairo_destroy(cr);
+    }
+#else // !GTK_CHECK_VERSION(3,0,0)
+    gdk_gc_set_foreground(gui.text_gc, gui.fgcolor);
+    gdk_draw_rectangle(gui.drawarea->window, gui.text_gc,
+	    TRUE,
+# ifdef FEAT_RIGHTLEFT
+	    // vertical line should be on the right of current point
+	    CURSOR_BAR_RIGHT ? FILL_X(gui.col + 1) - w :
+# endif
+	    FILL_X(gui.col),
+	    FILL_Y(gui.row) + gui.char_height - h,
+	    w, h);
+#endif // !GTK_CHECK_VERSION(3,0,0)
+}
+
+
+/*
+ * Catch up with any queued X11 events.  This may put keyboard input into the
+ * input buffer, call resize call-backs, trigger timers etc.  If there is
+ * nothing in the X11 event queue (& no timers pending), then we return
+ * immediately.
+ */
+    void
+gui_mch_update(void)
+{
+    while (g_main_context_pending(NULL) && !vim_is_input_buf_full())
+	g_main_context_iteration(NULL, TRUE);
+}
+
+    static timeout_cb_type
+input_timer_cb(gpointer data)
+{
+    int *timed_out = (int *) data;
+
+    // Just inform the caller about the occurrence of it
+    *timed_out = TRUE;
+
+    return FALSE;		// don't happen again
+}
+
+#ifdef FEAT_JOB_CHANNEL
+    static timeout_cb_type
+channel_poll_cb(gpointer data UNUSED)
+{
+    // Using an event handler for a channel that may be disconnected does
+    // not work, it hangs.  Instead poll for messages.
+    channel_handle_events(TRUE);
+    parse_queued_messages();
+
+    return TRUE;		// repeat
+}
+#endif
+
+/*
+ * GUI input routine called by gui_wait_for_chars().  Waits for a character
+ * from the keyboard.
+ *  wtime == -1     Wait forever.
+ *  wtime == 0	    This should never happen.
+ *  wtime > 0	    Wait wtime milliseconds for a character.
+ * Returns OK if a character was found to be available within the given time,
+ * or FAIL otherwise.
+ */
+    int
+gui_mch_wait_for_chars(long wtime)
+{
+    int		focus;
+    guint	timer;
+    static int	timed_out;
+    int		retval = FAIL;
+#ifdef FEAT_JOB_CHANNEL
+    guint	channel_timer = 0;
+#endif
+
+    timed_out = FALSE;
+
+    // This timeout makes sure that we will return if no characters arrived in
+    // time. If "wtime" is zero just use one.
+    if (wtime >= 0)
+	timer = timeout_add(wtime == 0 ? 1L : wtime,
+						   input_timer_cb, &timed_out);
+    else
+	timer = 0;
+
+#ifdef FEAT_JOB_CHANNEL
+    // If there is a channel with the keep_open flag we need to poll for input
+    // on them.
+    if (channel_any_keep_open())
+	channel_timer = timeout_add(20, channel_poll_cb, NULL);
+#endif
+
+    focus = gui.in_focus;
+
+    do
+    {
+	// Stop or start blinking when focus changes
+	if (gui.in_focus != focus)
+	{
+	    if (gui.in_focus)
+		gui_mch_start_blink();
+	    else
+		gui_mch_stop_blink(TRUE);
+	    focus = gui.in_focus;
+	}
+
+#ifdef MESSAGE_QUEUE
+# ifdef FEAT_TIMERS
+	did_add_timer = FALSE;
+# endif
+	parse_queued_messages();
+# ifdef FEAT_TIMERS
+	if (did_add_timer)
+	    // Need to recompute the waiting time.
+	    goto theend;
+# endif
+#endif
+
+	/*
+	 * Loop in GTK+ processing  until a timeout or input occurs.
+	 * Skip this if input is available anyway (can happen in rare
+	 * situations, sort of race condition).
+	 */
+	if (!input_available())
+	    g_main_context_iteration(NULL, TRUE);
+
+	// Got char, return immediately
+	if (input_available())
+	{
+	    retval = OK;
+	    goto theend;
+	}
+    } while (wtime < 0 || !timed_out);
+
+    /*
+     * Flush all eventually pending (drawing) events.
+     */
+    gui_mch_update();
+
+theend:
+    if (timer != 0 && !timed_out)
+	timeout_remove(timer);
+#ifdef FEAT_JOB_CHANNEL
+    if (channel_timer != 0)
+	timeout_remove(channel_timer);
+#endif
+
+    return retval;
+}
+
+
+/////////////////////////////////////////////////////////////////////////////
+// Output drawing routines.
+//
+
+
+// Flush any output to the screen
+    void
+gui_mch_flush(void)
+{
+    if (gui.mainwin != NULL && gtk_widget_get_realized(gui.mainwin))
+#if GTK_CHECK_VERSION(2,4,0)
+	gdk_display_flush(gtk_widget_get_display(gui.mainwin));
+#else
+	gdk_display_sync(gtk_widget_get_display(gui.mainwin));
+#endif
+}
+
+/*
+ * Clear a rectangular region of the screen from text pos (row1, col1) to
+ * (row2, col2) inclusive.
+ */
+    void
+gui_mch_clear_block(int row1arg, int col1arg, int row2arg, int col2arg)
+{
+
+    int col1 = check_col(col1arg);
+    int col2 = check_col(col2arg);
+    int row1 = check_row(row1arg);
+    int row2 = check_row(row2arg);
+
+#if GTK_CHECK_VERSION(3,0,0)
+    if (gtk_widget_get_window(gui.drawarea) == NULL)
+	return;
+#else
+    GdkColor color;
+
+    if (gui.drawarea->window == NULL)
+	return;
+
+    color.pixel = gui.back_pixel;
+#endif
+
+#if GTK_CHECK_VERSION(3,0,0)
+    {
+	// Add one pixel to the far right column in case a double-stroked
+	// bold glyph may sit there.
+	const GdkRectangle rect = {
+	    FILL_X(col1), FILL_Y(row1),
+	    (col2 - col1 + 1) * gui.char_width + (col2 == Columns - 1),
+	    (row2 - row1 + 1) * gui.char_height
+	};
+	cairo_t * const cr = cairo_create(gui.surface);
+# if GTK_CHECK_VERSION(3,22,2)
+	set_cairo_source_rgba_from_color(cr, gui.back_pixel);
+# else
+	GdkWindow * const win = gtk_widget_get_window(gui.drawarea);
+	cairo_pattern_t * const pat = gdk_window_get_background_pattern(win);
+	if (pat != NULL)
+	    cairo_set_source(cr, pat);
+	else
+	    set_cairo_source_rgba_from_color(cr, gui.back_pixel);
+# endif
+	cairo_rectangle(cr, rect.x, rect.y, rect.width, rect.height);
+	cairo_fill(cr);
+	cairo_destroy(cr);
+
+	gtk_widget_queue_draw_area(gui.drawarea,
+		rect.x, rect.y, rect.width, rect.height);
+    }
+#else // !GTK_CHECK_VERSION(3,0,0)
+    gdk_gc_set_foreground(gui.text_gc, &color);
+
+    // Clear one extra pixel at the far right, for when bold characters have
+    // spilled over to the window border.
+    gdk_draw_rectangle(gui.drawarea->window, gui.text_gc, TRUE,
+		       FILL_X(col1), FILL_Y(row1),
+		       (col2 - col1 + 1) * gui.char_width
+						      + (col2 == Columns - 1),
+		       (row2 - row1 + 1) * gui.char_height);
+#endif // !GTK_CHECK_VERSION(3,0,0)
+}
+
+#if GTK_CHECK_VERSION(3,0,0)
+    static void
+gui_gtk_window_clear(GdkWindow *win)
+{
+    const GdkRectangle rect = {
+	0, 0, gdk_window_get_width(win), gdk_window_get_height(win)
+    };
+    cairo_t * const cr = cairo_create(gui.surface);
+# if GTK_CHECK_VERSION(3,22,2)
+    set_cairo_source_rgba_from_color(cr, gui.back_pixel);
+# else
+    cairo_pattern_t * const pat = gdk_window_get_background_pattern(win);
+    if (pat != NULL)
+	cairo_set_source(cr, pat);
+    else
+	set_cairo_source_rgba_from_color(cr, gui.back_pixel);
+# endif
+    cairo_rectangle(cr, rect.x, rect.y, rect.width, rect.height);
+    cairo_fill(cr);
+    cairo_destroy(cr);
+
+    gtk_widget_queue_draw_area(gui.drawarea,
+	    rect.x, rect.y, rect.width, rect.height);
+}
+#else
+# define gui_gtk_window_clear(win)  gdk_window_clear(win)
+#endif
+
+    void
+gui_mch_clear_all(void)
+{
+    if (gtk_widget_get_window(gui.drawarea) != NULL)
+	gui_gtk_window_clear(gtk_widget_get_window(gui.drawarea));
+}
+
+#if !GTK_CHECK_VERSION(3,0,0)
+/*
+ * Redraw any text revealed by scrolling up/down.
+ */
+    static void
+check_copy_area(void)
+{
+    GdkEvent	*event;
+    int		expose_count;
+
+    if (gui.visibility != GDK_VISIBILITY_PARTIAL)
+	return;
+
+    // Avoid redrawing the cursor while scrolling or it'll end up where
+    // we don't want it to be.	I'm not sure if it's correct to call
+    // gui_dont_update_cursor() at this point but it works as a quick
+    // fix for now.
+    gui_dont_update_cursor(TRUE);
+
+    do
+    {
+	// Wait to check whether the scroll worked or not.
+	event = gdk_event_get_graphics_expose(gui.drawarea->window);
+
+	if (event == NULL)
+	    break; // received NoExpose event
+
+	gui_redraw(event->expose.area.x, event->expose.area.y,
+		   event->expose.area.width, event->expose.area.height);
+
+	expose_count = event->expose.count;
+	gdk_event_free(event);
+    }
+    while (expose_count > 0); // more events follow
+
+    gui_can_update_cursor();
+}
+#endif // !GTK_CHECK_VERSION(3,0,0)
+
+#if GTK_CHECK_VERSION(3,0,0)
+    static void
+gui_gtk_surface_copy_rect(int dest_x, int dest_y,
+			  int src_x,  int src_y,
+			  int width,  int height)
+{
+    cairo_t * const cr = cairo_create(gui.surface);
+
+    cairo_rectangle(cr, dest_x, dest_y, width, height);
+    cairo_clip(cr);
+    cairo_push_group(cr);
+    cairo_set_source_surface(cr, gui.surface, dest_x - src_x, dest_y - src_y);
+    cairo_paint(cr);
+    cairo_pop_group_to_source(cr);
+    cairo_paint(cr);
+
+    cairo_destroy(cr);
+}
+#endif
+
+/*
+ * Delete the given number of lines from the given row, scrolling up any
+ * text further down within the scroll region.
+ */
+    void
+gui_mch_delete_lines(int row, int num_lines)
+{
+#if GTK_CHECK_VERSION(3,0,0)
+    const int ncols = gui.scroll_region_right - gui.scroll_region_left + 1;
+    const int nrows = gui.scroll_region_bot - row + 1;
+    const int src_nrows = nrows - num_lines;
+
+    gui_gtk_surface_copy_rect(
+	    FILL_X(gui.scroll_region_left), FILL_Y(row),
+	    FILL_X(gui.scroll_region_left), FILL_Y(row + num_lines),
+	    gui.char_width * ncols + 1,     gui.char_height * src_nrows);
+    gui_clear_block(
+	    gui.scroll_region_bot - num_lines + 1, gui.scroll_region_left,
+	    gui.scroll_region_bot,		   gui.scroll_region_right);
+    gtk_widget_queue_draw_area(gui.drawarea,
+	    FILL_X(gui.scroll_region_left), FILL_Y(row),
+	    gui.char_width * ncols + 1,	gui.char_height * nrows);
+#else
+    if (gui.visibility == GDK_VISIBILITY_FULLY_OBSCURED)
+	return;			// Can't see the window
+
+    gdk_gc_set_foreground(gui.text_gc, gui.fgcolor);
+    gdk_gc_set_background(gui.text_gc, gui.bgcolor);
+
+    // copy one extra pixel, for when bold has spilled over
+    gdk_window_copy_area(gui.drawarea->window, gui.text_gc,
+	    FILL_X(gui.scroll_region_left), FILL_Y(row),
+	    gui.drawarea->window,
+	    FILL_X(gui.scroll_region_left),
+	    FILL_Y(row + num_lines),
+	    gui.char_width * (gui.scroll_region_right
+					    - gui.scroll_region_left + 1) + 1,
+	    gui.char_height * (gui.scroll_region_bot - row - num_lines + 1));
+
+    gui_clear_block(gui.scroll_region_bot - num_lines + 1,
+						       gui.scroll_region_left,
+		    gui.scroll_region_bot, gui.scroll_region_right);
+    check_copy_area();
+#endif // !GTK_CHECK_VERSION(3,0,0)
+}
+
+/*
+ * Insert the given number of lines before the given row, scrolling down any
+ * following text within the scroll region.
+ */
+    void
+gui_mch_insert_lines(int row, int num_lines)
+{
+#if GTK_CHECK_VERSION(3,0,0)
+    const int ncols = gui.scroll_region_right - gui.scroll_region_left + 1;
+    const int nrows = gui.scroll_region_bot - row + 1;
+    const int src_nrows = nrows - num_lines;
+
+    gui_gtk_surface_copy_rect(
+	    FILL_X(gui.scroll_region_left), FILL_Y(row + num_lines),
+	    FILL_X(gui.scroll_region_left), FILL_Y(row),
+	    gui.char_width * ncols + 1,     gui.char_height * src_nrows);
+    gui_clear_block(
+	    row,		 gui.scroll_region_left,
+	    row + num_lines - 1, gui.scroll_region_right);
+    gtk_widget_queue_draw_area(gui.drawarea,
+	    FILL_X(gui.scroll_region_left), FILL_Y(row),
+	    gui.char_width * ncols + 1,	gui.char_height * nrows);
+#else
+    if (gui.visibility == GDK_VISIBILITY_FULLY_OBSCURED)
+	return;			// Can't see the window
+
+    gdk_gc_set_foreground(gui.text_gc, gui.fgcolor);
+    gdk_gc_set_background(gui.text_gc, gui.bgcolor);
+
+    // copy one extra pixel, for when bold has spilled over
+    gdk_window_copy_area(gui.drawarea->window, gui.text_gc,
+	    FILL_X(gui.scroll_region_left), FILL_Y(row + num_lines),
+	    gui.drawarea->window,
+	    FILL_X(gui.scroll_region_left), FILL_Y(row),
+	    gui.char_width * (gui.scroll_region_right
+					    - gui.scroll_region_left + 1) + 1,
+	    gui.char_height * (gui.scroll_region_bot - row - num_lines + 1));
+
+    gui_clear_block(row, gui.scroll_region_left,
+				row + num_lines - 1, gui.scroll_region_right);
+    check_copy_area();
+#endif // !GTK_CHECK_VERSION(3,0,0)
+}
+
+/*
+ * X Selection stuff, for cutting and pasting text to other windows.
+ */
+    void
+clip_mch_request_selection(Clipboard_T *cbd)
+{
+    GdkAtom	target;
+    unsigned	i;
+    time_t	start;
+
+    for (i = 0; i < N_SELECTION_TARGETS; ++i)
+    {
+	if (!clip_html && selection_targets[i].info == TARGET_HTML)
+	    continue;
+	received_selection = RS_NONE;
+	target = gdk_atom_intern(selection_targets[i].target, FALSE);
+
+	gtk_selection_convert(gui.drawarea,
+			      cbd->gtk_sel_atom, target,
+			      (guint32)GDK_CURRENT_TIME);
+
+	// Hack: Wait up to three seconds for the selection.  A hang was
+	// noticed here when using the netrw plugin combined with ":gui"
+	// during the FocusGained event.
+	start = time(NULL);
+	while (received_selection == RS_NONE && time(NULL) < start + 3)
+	    g_main_context_iteration(NULL, TRUE);	// wait for selection_received_cb
+
+	if (received_selection != RS_FAIL)
+	    return;
+    }
+
+    // Final fallback position - use the X CUT_BUFFER0 store
+    yank_cut_buffer0(GDK_WINDOW_XDISPLAY(gtk_widget_get_window(gui.mainwin)),
+	    cbd);
+}
+
+/*
+ * Disown the selection.
+ */
+    void
+clip_mch_lose_selection(Clipboard_T *cbd UNUSED)
+{
+    if (in_selection_clear_event)
+	return;
+
+    gtk_selection_owner_set(NULL, cbd->gtk_sel_atom, gui.event_time);
+    gui_mch_update();
+}
+
+/*
+ * Own the selection and return OK if it worked.
+ */
+    int
+clip_mch_own_selection(Clipboard_T *cbd)
+{
+    int success;
+
+    success = gtk_selection_owner_set(gui.drawarea, cbd->gtk_sel_atom,
+				      gui.event_time);
+    gui_mch_update();
+    return (success) ? OK : FAIL;
+}
+
+/*
+ * Send the current selection to the clipboard.  Do nothing for X because we
+ * will fill in the selection only when requested by another app.
+ */
+    void
+clip_mch_set_selection(Clipboard_T *cbd UNUSED)
+{
+}
+
+#if (defined(FEAT_XCLIPBOARD) && defined(USE_SYSTEM)) || defined(PROTO)
+    int
+clip_gtk_owner_exists(Clipboard_T *cbd)
+{
+    return gdk_selection_owner_get(cbd->gtk_sel_atom) != NULL;
+}
+#endif
+
+
+#if defined(FEAT_MENU) || defined(PROTO)
+/*
+ * Make a menu item appear either active or not active (grey or not grey).
+ */
+    void
+gui_mch_menu_grey(vimmenu_T *menu, int grey)
+{
+    if (menu->id == NULL)
+	return;
+
+    if (menu_is_separator(menu->name))
+	grey = TRUE;
+
+    gui_mch_menu_hidden(menu, FALSE);
+    // Be clever about bitfields versus true booleans here!
+    if (!gtk_widget_get_sensitive(menu->id) == !grey)
+    {
+	gtk_widget_set_sensitive(menu->id, !grey);
+	gui_mch_update();
+    }
+}
+
+/*
+ * Make menu item hidden or not hidden.
+ */
+    void
+gui_mch_menu_hidden(vimmenu_T *menu, int hidden)
+{
+    if (menu->id == 0)
+	return;
+
+    if (hidden)
+    {
+	if (gtk_widget_get_visible(menu->id))
+	{
+	    gtk_widget_hide(menu->id);
+	    gui_mch_update();
+	}
+    }
+    else
+    {
+	if (!gtk_widget_get_visible(menu->id))
+	{
+	    gtk_widget_show(menu->id);
+	    gui_mch_update();
+	}
+    }
+}
+
+/*
+ * This is called after setting all the menus to grey/hidden or not.
+ */
+    void
+gui_mch_draw_menubar(void)
+{
+    // just make sure that the visual changes get effect immediately
+    gui_mch_update();
+}
+#endif // FEAT_MENU
+
+/*
+ * Scrollbar stuff.
+ */
+    void
+gui_mch_enable_scrollbar(scrollbar_T *sb, int flag)
+{
+    if (sb->id == NULL)
+	return;
+
+    gtk_widget_set_visible(sb->id, flag);
+    update_window_manager_hints(0, 0);
+}
+
+
+/*
+ * Return the RGB value of a pixel as long.
+ */
+    guicolor_T
+gui_mch_get_rgb(guicolor_T pixel)
+{
+#if GTK_CHECK_VERSION(3,0,0)
+    return (long_u)pixel;
+#else
+    GdkColor color;
+
+    gdk_colormap_query_color(gtk_widget_get_colormap(gui.drawarea),
+			     (unsigned long)pixel, &color);
+
+    return (guicolor_T)(
+	    (((unsigned)color.red   & 0xff00) << 8)
+	 |  ((unsigned)color.green & 0xff00)
+	 | (((unsigned)color.blue  & 0xff00) >> 8));
+#endif
+}
+
+/*
+ * Get current mouse coordinates in text window.
+ */
+    void
+gui_mch_getmouse(int *x, int *y)
+{
+    gui_gtk_get_pointer(gui.drawarea, x, y, NULL);
+}
+
+    void
+gui_mch_setmouse(int x, int y)
+{
+    // Sorry for the Xlib call, but we can't avoid it, since there is no
+    // internal GDK mechanism present to accomplish this.  (and for good
+    // reason...)
+    XWarpPointer(GDK_WINDOW_XDISPLAY(gtk_widget_get_window(gui.drawarea)),
+		 (Window)0, GDK_WINDOW_XID(gtk_widget_get_window(gui.drawarea)),
+		 0, 0, 0U, 0U, x, y);
+}
+
+
+#ifdef FEAT_MOUSESHAPE
+// The last set mouse pointer shape is remembered, to be used when it goes
+// from hidden to not hidden.
+static int last_shape = 0;
+#endif
+
+/*
+ * Use the blank mouse pointer or not.
+ *
+ * hide: TRUE = use blank ptr, FALSE = use parent ptr
+ */
+    void
+gui_mch_mousehide(int hide)
+{
+    if (gui.pointer_hidden == hide)
+	return;
+
+    gui.pointer_hidden = hide;
+    if (gtk_widget_get_window(gui.drawarea) && gui.blank_pointer != NULL)
+    {
+	if (hide)
+	    gdk_window_set_cursor(gtk_widget_get_window(gui.drawarea),
+		    gui.blank_pointer);
+	else
+#ifdef FEAT_MOUSESHAPE
+	    mch_set_mouse_shape(last_shape);
+#else
+	gdk_window_set_cursor(gtk_widget_get_window(gui.drawarea), NULL);
+#endif
+    }
+}
+
+#if defined(FEAT_MOUSESHAPE) || defined(PROTO)
+
+// Table for shape IDs.  Keep in sync with the mshape_names[] table in
+// misc2.c!
+static const int mshape_ids[] =
+{
+    GDK_LEFT_PTR,		// arrow
+    GDK_CURSOR_IS_PIXMAP,	// blank
+    GDK_XTERM,			// beam
+    GDK_SB_V_DOUBLE_ARROW,	// updown
+    GDK_SIZING,			// udsizing
+    GDK_SB_H_DOUBLE_ARROW,	// leftright
+    GDK_SIZING,			// lrsizing
+    GDK_WATCH,			// busy
+    GDK_X_CURSOR,		// no
+    GDK_CROSSHAIR,		// crosshair
+    GDK_HAND1,			// hand1
+    GDK_HAND2,			// hand2
+    GDK_PENCIL,			// pencil
+    GDK_QUESTION_ARROW,		// question
+    GDK_RIGHT_PTR,		// right-arrow
+    GDK_CENTER_PTR,		// up-arrow
+    GDK_LEFT_PTR		// last one
+};
+
+    void
+mch_set_mouse_shape(int shape)
+{
+    int		   id;
+    GdkCursor	   *c;
+
+    if (gtk_widget_get_window(gui.drawarea) == NULL)
+	return;
+
+    if (shape == MSHAPE_HIDE || gui.pointer_hidden)
+	gdk_window_set_cursor(gtk_widget_get_window(gui.drawarea),
+		gui.blank_pointer);
+    else
+    {
+	if (shape >= MSHAPE_NUMBERED)
+	{
+	    id = shape - MSHAPE_NUMBERED;
+	    if (id >= GDK_LAST_CURSOR)
+		id = GDK_LEFT_PTR;
+	    else
+		id &= ~1;	// they are always even (why?)
+	}
+	else if (shape < (int)ARRAY_LENGTH(mshape_ids))
+	    id = mshape_ids[shape];
+	else
+	    return;
+	c = gdk_cursor_new_for_display(
+		gtk_widget_get_display(gui.drawarea), (GdkCursorType)id);
+	gdk_window_set_cursor(gtk_widget_get_window(gui.drawarea), c);
+# if GTK_CHECK_VERSION(3,0,0)
+	g_object_unref(G_OBJECT(c));
+# else
+	gdk_cursor_destroy(c); // Unref, actually.  Bloody GTK+ 1.
+# endif
+    }
+    if (shape != MSHAPE_HIDE)
+	last_shape = shape;
+}
+#endif // FEAT_MOUSESHAPE
+
+
+#if defined(FEAT_SIGN_ICONS) || defined(PROTO)
+/*
+ * Signs are currently always 2 chars wide.  With GTK+ 2, the image will be
+ * scaled down if the current font is not big enough, or scaled up if the image
+ * size is less than 3/4 of the maximum sign size.  With GTK+ 1, the pixmap
+ * will be cut off if the current font is not big enough, or centered if it's
+ * too small.
+ */
+# define SIGN_WIDTH  (2 * gui.char_width)
+# define SIGN_HEIGHT (gui.char_height)
+# define SIGN_ASPECT ((double)SIGN_HEIGHT / (double)SIGN_WIDTH)
+
+    void
+gui_mch_drawsign(int row, int col, int typenr)
+{
+    GdkPixbuf *sign;
+
+    sign = (GdkPixbuf *)sign_get_image(typenr);
+
+    if (sign == NULL || gui.drawarea == NULL
+	    || gtk_widget_get_window(gui.drawarea) == NULL)
+	return;
+
+    int width;
+    int height;
+    int xoffset;
+    int yoffset;
+    int need_scale;
+
+    width  = gdk_pixbuf_get_width(sign);
+    height = gdk_pixbuf_get_height(sign);
+    /*
+     * Decide whether we need to scale.  Allow one pixel of border
+     * width to be cut off, in order to avoid excessive scaling for
+     * tiny differences in font size.
+     * Do scale to fit the height to avoid gaps because of linespacing.
+     */
+    need_scale = (width > SIGN_WIDTH + 2
+	    || height != SIGN_HEIGHT
+	    || (width < 3 * SIGN_WIDTH / 4
+		&& height < 3 * SIGN_HEIGHT / 4));
+    if (need_scale)
+    {
+	double  aspect;
+	int	    w = width;
+	int	    h = height;
+
+	// Keep the original aspect ratio
+	aspect = (double)height / (double)width;
+	width  = (double)SIGN_WIDTH * SIGN_ASPECT / aspect;
+	width  = MIN(width, SIGN_WIDTH);
+	if (((double)(MAX(height, SIGN_HEIGHT)) /
+		    (double)(MIN(height, SIGN_HEIGHT))) < 1.15)
+	{
+	    // Change the aspect ratio by at most 15% to fill the
+	    // available space completely.
+	    height = (double)SIGN_HEIGHT * SIGN_ASPECT / aspect;
+	    height = MIN(height, SIGN_HEIGHT);
+	}
+	else
+	    height = (double)width * aspect;
+
+	if (w == width && h == height)
+	{
+	    // no change in dimensions; don't decrease reference counter
+	    // (below)
+	    need_scale = FALSE;
+	}
+	else
+	{
+	    // This doesn't seem to be worth caching, and doing so would
+	    // complicate the code quite a bit.
+	    sign = gdk_pixbuf_scale_simple(sign, width, height,
+		    GDK_INTERP_BILINEAR);
+	    if (sign == NULL)
+		return; // out of memory
+	}
+    }
+
+    // The origin is the upper-left corner of the pixmap.  Therefore
+    // these offset may become negative if the pixmap is smaller than
+    // the 2x1 cells reserved for the sign icon.
+    xoffset = (width  - SIGN_WIDTH)  / 2;
+    yoffset = (height - SIGN_HEIGHT) / 2;
+
+# if GTK_CHECK_VERSION(3,0,0)
+    {
+	cairo_t	    *cr;
+	cairo_surface_t *bg_surf;
+	cairo_t	    *bg_cr;
+	cairo_surface_t *sign_surf;
+	cairo_t	    *sign_cr;
+
+	cr = cairo_create(gui.surface);
+
+	bg_surf = cairo_surface_create_similar(gui.surface,
+		cairo_surface_get_content(gui.surface),
+		SIGN_WIDTH, SIGN_HEIGHT);
+	bg_cr = cairo_create(bg_surf);
+	cairo_set_source_rgba(bg_cr,
+		gui.bgcolor->red, gui.bgcolor->green, gui.bgcolor->blue,
+		gui.bgcolor->alpha);
+	cairo_paint(bg_cr);
+
+	sign_surf = cairo_surface_create_similar(gui.surface,
+		cairo_surface_get_content(gui.surface),
+		SIGN_WIDTH, SIGN_HEIGHT);
+	sign_cr = cairo_create(sign_surf);
+	gdk_cairo_set_source_pixbuf(sign_cr, sign, -xoffset, -yoffset);
+	cairo_paint(sign_cr);
+
+	cairo_set_operator(sign_cr, CAIRO_OPERATOR_DEST_OVER);
+	cairo_set_source_surface(sign_cr, bg_surf, 0, 0);
+	cairo_paint(sign_cr);
+
+	cairo_set_source_surface(cr, sign_surf, FILL_X(col), FILL_Y(row));
+	cairo_paint(cr);
+
+	cairo_destroy(sign_cr);
+	cairo_surface_destroy(sign_surf);
+	cairo_destroy(bg_cr);
+	cairo_surface_destroy(bg_surf);
+	cairo_destroy(cr);
+
+	gtk_widget_queue_draw_area(gui.drawarea,
+		FILL_X(col), FILL_Y(col), width, height);
+
+    }
+# else // !GTK_CHECK_VERSION(3,0,0)
+    gdk_gc_set_foreground(gui.text_gc, gui.bgcolor);
+
+    gdk_draw_rectangle(gui.drawarea->window,
+	    gui.text_gc,
+	    TRUE,
+	    FILL_X(col),
+	    FILL_Y(row),
+	    SIGN_WIDTH,
+	    SIGN_HEIGHT);
+
+    gdk_pixbuf_render_to_drawable_alpha(sign,
+	    gui.drawarea->window,
+	    MAX(0, xoffset),
+	    MAX(0, yoffset),
+	    FILL_X(col) - MIN(0, xoffset),
+	    FILL_Y(row) - MIN(0, yoffset),
+	    MIN(width,	SIGN_WIDTH),
+	    MIN(height, SIGN_HEIGHT),
+	    GDK_PIXBUF_ALPHA_BILEVEL,
+	    127,
+	    GDK_RGB_DITHER_NORMAL,
+	    0, 0);
+# endif // !GTK_CHECK_VERSION(3,0,0)
+    if (need_scale)
+	g_object_unref(sign);
+}
+
+    void *
+gui_mch_register_sign(char_u *signfile)
+{
+    if (signfile[0] != NUL && signfile[0] != '-' && gui.in_use)
+    {
+	GdkPixbuf   *sign;
+	GError	    *error = NULL;
+	char_u	    *message;
+
+	sign = gdk_pixbuf_new_from_file((const char *)signfile, &error);
+
+	if (error == NULL)
+	    return sign;
+
+	message = (char_u *)error->message;
+
+	if (message != NULL && input_conv.vc_type != CONV_NONE)
+	    message = string_convert(&input_conv, message, NULL);
+
+	if (message != NULL)
+	{
+	    // The error message is already translated and will be more
+	    // descriptive than anything we could possibly do ourselves.
+	    semsg("E255: %s", message);
+
+	    if (input_conv.vc_type != CONV_NONE)
+		vim_free(message);
+	}
+	g_error_free(error);
+    }
+
+    return NULL;
+}
+
+    void
+gui_mch_destroy_sign(void *sign)
+{
+    if (sign != NULL)
+	g_object_unref(sign);
+}
+
+#endif // FEAT_SIGN_ICONS