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-rw-r--r--app/widgets/gimppopup.c344
1 files changed, 344 insertions, 0 deletions
diff --git a/app/widgets/gimppopup.c b/app/widgets/gimppopup.c
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+++ b/app/widgets/gimppopup.c
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+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimppopup.c
+ * Copyright (C) 2003-2014 Michael Natterer <mitch@gimp.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <gegl.h>
+#include <gtk/gtk.h>
+#include <gdk/gdkkeysyms.h>
+
+#include "libgimpwidgets/gimpwidgets.h"
+
+#include "widgets-types.h"
+
+#include "core/gimpmarshal.h"
+
+#include "gimppopup.h"
+
+
+enum
+{
+ CANCEL,
+ CONFIRM,
+ LAST_SIGNAL
+};
+
+
+static gboolean gimp_popup_map_event (GtkWidget *widget,
+ GdkEventAny *event);
+static gboolean gimp_popup_button_press (GtkWidget *widget,
+ GdkEventButton *bevent);
+static gboolean gimp_popup_key_press (GtkWidget *widget,
+ GdkEventKey *kevent);
+
+static void gimp_popup_real_cancel (GimpPopup *popup);
+static void gimp_popup_real_confirm (GimpPopup *popup);
+
+
+G_DEFINE_TYPE (GimpPopup, gimp_popup, GTK_TYPE_WINDOW)
+
+#define parent_class gimp_popup_parent_class
+
+static guint popup_signals[LAST_SIGNAL];
+
+
+static void
+gimp_popup_class_init (GimpPopupClass *klass)
+{
+ GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
+ GtkBindingSet *binding_set;
+
+ popup_signals[CANCEL] =
+ g_signal_new ("cancel",
+ G_OBJECT_CLASS_TYPE (klass),
+ G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
+ G_STRUCT_OFFSET (GimpPopupClass, cancel),
+ NULL, NULL,
+ gimp_marshal_VOID__VOID,
+ G_TYPE_NONE, 0);
+
+ popup_signals[CONFIRM] =
+ g_signal_new ("confirm",
+ G_OBJECT_CLASS_TYPE (klass),
+ G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
+ G_STRUCT_OFFSET (GimpPopupClass, confirm),
+ NULL, NULL,
+ gimp_marshal_VOID__VOID,
+ G_TYPE_NONE, 0);
+
+ widget_class->map_event = gimp_popup_map_event;
+ widget_class->button_press_event = gimp_popup_button_press;
+ widget_class->key_press_event = gimp_popup_key_press;
+
+ klass->cancel = gimp_popup_real_cancel;
+ klass->confirm = gimp_popup_real_confirm;
+
+ binding_set = gtk_binding_set_by_class (klass);
+
+ gtk_binding_entry_add_signal (binding_set, GDK_KEY_Escape, 0,
+ "cancel", 0);
+ gtk_binding_entry_add_signal (binding_set, GDK_KEY_Return, 0,
+ "confirm", 0);
+ gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Enter, 0,
+ "confirm", 0);
+ gtk_binding_entry_add_signal (binding_set, GDK_KEY_ISO_Enter, 0,
+ "confirm", 0);
+ gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, 0,
+ "confirm", 0);
+ gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, 0,
+ "confirm", 0);
+}
+
+static void
+gimp_popup_init (GimpPopup *popup)
+{
+}
+
+static void
+gimp_popup_grab_notify (GtkWidget *widget,
+ gboolean was_grabbed)
+{
+ if (was_grabbed)
+ return;
+
+ /* ignore grabs on one of our children, like a scrollbar */
+ if (gtk_widget_is_ancestor (gtk_grab_get_current (), widget))
+ return;
+
+ g_signal_emit (widget, popup_signals[CANCEL], 0);
+}
+
+static gboolean
+gimp_popup_grab_broken_event (GtkWidget *widget,
+ GdkEventGrabBroken *event)
+{
+ gimp_popup_grab_notify (widget, FALSE);
+
+ return FALSE;
+}
+
+static gboolean
+gimp_popup_map_event (GtkWidget *widget,
+ G_GNUC_UNUSED GdkEventAny *event)
+{
+ GTK_WIDGET_CLASS (parent_class)->map_event (widget, event);
+
+ /* grab with owner_events == TRUE so the popup's widgets can
+ * receive events. we filter away events outside this toplevel
+ * away in button_press()
+ */
+ if (gdk_pointer_grab (gtk_widget_get_window (widget), TRUE,
+ GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK |
+ GDK_POINTER_MOTION_MASK,
+ NULL, NULL, GDK_CURRENT_TIME) == GDK_GRAB_SUCCESS)
+ {
+ if (gdk_keyboard_grab (gtk_widget_get_window (widget), TRUE,
+ GDK_CURRENT_TIME) == GDK_GRAB_SUCCESS)
+ {
+ gtk_grab_add (widget);
+
+ g_signal_connect (widget, "grab-notify",
+ G_CALLBACK (gimp_popup_grab_notify),
+ widget);
+ g_signal_connect (widget, "grab-broken-event",
+ G_CALLBACK (gimp_popup_grab_broken_event),
+ widget);
+
+ return FALSE;
+ }
+ else
+ {
+ gdk_display_pointer_ungrab (gtk_widget_get_display (widget),
+ GDK_CURRENT_TIME);
+ }
+ }
+
+ /* if we could not grab, destroy the popup instead of leaving it
+ * around uncloseable.
+ */
+ g_signal_emit (widget, popup_signals[CANCEL], 0);
+ return FALSE;
+}
+
+static gboolean
+gimp_popup_button_press (GtkWidget *widget,
+ GdkEventButton *bevent)
+{
+ GtkWidget *event_widget;
+ gboolean cancel = FALSE;
+
+ event_widget = gtk_get_event_widget ((GdkEvent *) bevent);
+
+ if (event_widget == widget)
+ {
+ GtkAllocation allocation;
+
+ gtk_widget_get_allocation (widget, &allocation);
+
+ /* the event was on the popup, which can either be really on the
+ * popup or outside gimp (owner_events == TRUE, see map())
+ */
+ if (bevent->x < 0 ||
+ bevent->y < 0 ||
+ bevent->x > allocation.width ||
+ bevent->y > allocation.height)
+ {
+ /* the event was outsde gimp */
+
+ cancel = TRUE;
+ }
+ }
+ else if (gtk_widget_get_toplevel (event_widget) != widget)
+ {
+ /* the event was on a gimp widget, but not inside the popup */
+
+ cancel = TRUE;
+ }
+
+ if (cancel)
+ g_signal_emit (widget, popup_signals[CANCEL], 0);
+
+ return cancel;
+}
+
+static gboolean
+gimp_popup_key_press (GtkWidget *widget,
+ GdkEventKey *kevent)
+{
+ GtkWidget *focus = gtk_window_get_focus (GTK_WINDOW (widget));
+ gboolean activate_binding = TRUE;
+
+ if (focus &&
+ (GTK_IS_EDITABLE (focus) ||
+ GTK_IS_TEXT_VIEW (focus)) &&
+ (kevent->keyval == GDK_KEY_space ||
+ kevent->keyval == GDK_KEY_KP_Space))
+ {
+ /* if a text widget has the focus, and the key was space,
+ * don't manually activate the binding to allow entering the
+ * space in the focus widget.
+ */
+ activate_binding = FALSE;
+ }
+
+ if (activate_binding)
+ {
+ GtkBindingSet *binding_set;
+
+ binding_set = gtk_binding_set_by_class (g_type_class_peek (GIMP_TYPE_POPUP));
+
+ /* invoke the popup's binding entries manually, because
+ * otherwise the focus widget (GtkTreeView e.g.) would consume
+ * it
+ */
+ if (gtk_binding_set_activate (binding_set,
+ kevent->keyval,
+ kevent->state,
+ GTK_OBJECT (widget)))
+ {
+ return TRUE;
+ }
+ }
+
+ return GTK_WIDGET_CLASS (parent_class)->key_press_event (widget, kevent);
+}
+
+static void
+gimp_popup_real_cancel (GimpPopup *popup)
+{
+ GtkWidget *widget = GTK_WIDGET (popup);
+
+ if (gtk_grab_get_current () == widget)
+ gtk_grab_remove (widget);
+
+ gtk_widget_destroy (widget);
+}
+
+static void
+gimp_popup_real_confirm (GimpPopup *popup)
+{
+ GtkWidget *widget = GTK_WIDGET (popup);
+
+ if (gtk_grab_get_current () == widget)
+ gtk_grab_remove (widget);
+
+ gtk_widget_destroy (widget);
+}
+
+void
+gimp_popup_show (GimpPopup *popup,
+ GtkWidget *widget)
+{
+ GdkScreen *screen;
+ GtkRequisition requisition;
+ GtkAllocation allocation;
+ GdkRectangle rect;
+ gint monitor;
+ gint orig_x;
+ gint orig_y;
+ gint x;
+ gint y;
+
+ g_return_if_fail (GIMP_IS_POPUP (popup));
+ g_return_if_fail (GTK_IS_WIDGET (widget));
+
+ gtk_widget_size_request (GTK_WIDGET (popup), &requisition);
+
+ gtk_widget_get_allocation (widget, &allocation);
+ gdk_window_get_origin (gtk_widget_get_window (widget), &orig_x, &orig_y);
+
+ if (! gtk_widget_get_has_window (widget))
+ {
+ orig_x += allocation.x;
+ orig_y += allocation.y;
+ }
+
+ screen = gtk_widget_get_screen (widget);
+
+ monitor = gdk_screen_get_monitor_at_point (screen, orig_x, orig_y);
+ gdk_screen_get_monitor_workarea (screen, monitor, &rect);
+
+ if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
+ {
+ x = orig_x + allocation.width - requisition.width;
+
+ if (x < rect.x)
+ x -= allocation.width - requisition.width;
+ }
+ else
+ {
+ x = orig_x;
+
+ if (x + requisition.width > rect.x + rect.width)
+ x += allocation.width - requisition.width;
+ }
+
+ y = orig_y + allocation.height;
+
+ if (y + requisition.height > rect.y + rect.height)
+ y = orig_y - requisition.height;
+
+ gtk_window_set_screen (GTK_WINDOW (popup), screen);
+ gtk_window_set_transient_for (GTK_WINDOW (popup),
+ GTK_WINDOW (gtk_widget_get_toplevel (widget)));
+
+ gtk_window_move (GTK_WINDOW (popup), x, y);
+ gtk_widget_show (GTK_WIDGET (popup));
+}