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-rw-r--r--app/widgets/gimppanedbox.c959
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+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimppanedbox.c
+ * Copyright (C) 2001-2005 Michael Natterer <mitch@gimp.org>
+ * Copyright (C) 2009-2011 Martin Nordholts <martinn@src.gnome.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>
+#ifdef GDK_DISABLE_DEPRECATED
+#undef GDK_DISABLE_DEPRECATED
+#endif
+#include <gtk/gtk.h>
+
+#include "libgimpcolor/gimpcolor.h"
+#include "libgimpwidgets/gimpwidgets.h"
+
+#include "widgets-types.h"
+
+#include "core/gimp.h"
+#include "core/gimpcontext.h"
+#include "core/gimpmarshal.h"
+
+#include "gimpdialogfactory.h"
+#include "gimpdnd.h"
+#include "gimpdockable.h"
+#include "gimpdockbook.h"
+#include "gimpmenudock.h"
+#include "gimppanedbox.h"
+#include "gimptoolbox.h"
+
+#include "gimp-log.h"
+
+
+/**
+ * Defines the size of the area that dockables can be dropped on in
+ * order to be inserted and get space on their own (rather than
+ * inserted among others and sharing space)
+ */
+#define DROP_AREA_SIZE 6
+
+#define DROP_HIGHLIGHT_MIN_SIZE 32
+#define DROP_HIGHLIGHT_COLOR "#215d9c"
+#define DROP_HIGHLIGHT_OPACITY_ACTIVE 1.0
+#define DROP_HIGHLIGHT_OPACITY_INACTIVE 0.5
+
+#define INSERT_INDEX_UNUSED G_MININT
+
+
+struct _GimpPanedBoxPrivate
+{
+ /* Widgets that are separated by panes */
+ GList *widgets;
+
+ /* Windows used for drag-and-drop output */
+ GdkWindow *dnd_windows[3];
+ GdkDragContext *dnd_context;
+ gint dnd_paned_position;
+ gint dnd_idle_id;
+
+ /* The insert index to use on drop */
+ gint insert_index;
+
+ /* Callback on drop */
+ GimpPanedBoxDroppedFunc dropped_cb;
+ gpointer dropped_cb_data;
+
+ /* A drag handler offered to handle drag events */
+ GimpPanedBox *drag_handler;
+};
+
+
+static void gimp_paned_box_dispose (GObject *object);
+
+static void gimp_paned_box_drag_leave (GtkWidget *widget,
+ GdkDragContext *context,
+ guint time);
+static gboolean gimp_paned_box_drag_motion (GtkWidget *widget,
+ GdkDragContext *context,
+ gint x,
+ gint y,
+ guint time);
+static gboolean gimp_paned_box_drag_drop (GtkWidget *widget,
+ GdkDragContext *context,
+ gint x,
+ gint y,
+ guint time);
+static void gimp_paned_box_realize (GtkWidget *widget);
+static void gimp_paned_box_unrealize (GtkWidget *widget);
+static void gimp_paned_box_set_widget_drag_handler (GtkWidget *widget,
+ GimpPanedBox *handler);
+static gint gimp_paned_box_get_drop_area_size (GimpPanedBox *paned_box);
+
+static void gimp_paned_box_drag_callback (GdkDragContext *context,
+ gboolean begin,
+ GimpPanedBox *paned_box);
+
+
+G_DEFINE_TYPE_WITH_PRIVATE (GimpPanedBox, gimp_paned_box, GTK_TYPE_BOX)
+
+#define parent_class gimp_paned_box_parent_class
+
+static const GtkTargetEntry dialog_target_table[] = { GIMP_TARGET_DIALOG };
+
+
+static void
+gimp_paned_box_class_init (GimpPanedBoxClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+ GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
+
+ object_class->dispose = gimp_paned_box_dispose;
+
+ widget_class->drag_leave = gimp_paned_box_drag_leave;
+ widget_class->drag_motion = gimp_paned_box_drag_motion;
+ widget_class->drag_drop = gimp_paned_box_drag_drop;
+ widget_class->realize = gimp_paned_box_realize;
+ widget_class->unrealize = gimp_paned_box_unrealize;
+}
+
+static void
+gimp_paned_box_init (GimpPanedBox *paned_box)
+{
+ paned_box->p = gimp_paned_box_get_instance_private (paned_box);
+
+ /* Setup DND */
+ gtk_drag_dest_set (GTK_WIDGET (paned_box),
+ 0,
+ dialog_target_table, G_N_ELEMENTS (dialog_target_table),
+ GDK_ACTION_MOVE);
+
+ gimp_dockbook_add_drag_callback (
+ (GimpDockbookDragCallback) gimp_paned_box_drag_callback,
+ paned_box);
+}
+
+static void
+gimp_paned_box_dispose (GObject *object)
+{
+ GimpPanedBox *paned_box = GIMP_PANED_BOX (object);
+
+ if (paned_box->p->dnd_idle_id)
+ {
+ g_source_remove (paned_box->p->dnd_idle_id);
+
+ paned_box->p->dnd_idle_id = 0;
+ }
+
+ while (paned_box->p->widgets)
+ {
+ GtkWidget *widget = paned_box->p->widgets->data;
+
+ g_object_ref (widget);
+ gimp_paned_box_remove_widget (paned_box, widget);
+ gtk_widget_destroy (widget);
+ g_object_unref (widget);
+ }
+
+ gimp_dockbook_remove_drag_callback (
+ (GimpDockbookDragCallback) gimp_paned_box_drag_callback,
+ paned_box);
+
+ G_OBJECT_CLASS (parent_class)->dispose (object);
+}
+
+static void
+gimp_paned_box_realize (GtkWidget *widget)
+{
+ GTK_WIDGET_CLASS (parent_class)->realize (widget);
+
+ /* We realize() dnd_window on demand in
+ * gimp_paned_box_show_separators()
+ */
+}
+
+static void
+gimp_paned_box_unrealize (GtkWidget *widget)
+{
+ GimpPanedBox *paned_box = GIMP_PANED_BOX (widget);
+ gint i;
+
+ for (i = 0; i < G_N_ELEMENTS (paned_box->p->dnd_windows); i++)
+ {
+ GdkWindow *window = paned_box->p->dnd_windows[i];
+
+ if (window)
+ {
+ gdk_window_set_user_data (window, NULL);
+ gdk_window_destroy (window);
+
+ paned_box->p->dnd_windows[i] = NULL;
+ }
+ }
+
+ GTK_WIDGET_CLASS (parent_class)->unrealize (widget);
+}
+
+static void
+gimp_paned_box_set_widget_drag_handler (GtkWidget *widget,
+ GimpPanedBox *drag_handler)
+{
+ /* Hook us in for drag events. We could abstract this properly and
+ * put gimp_paned_box_will_handle_drag() in an interface for
+ * example, but it doesn't feel worth it at this point
+ *
+ * Note that we don't have 'else if's because a widget can be both a
+ * dock and a toolbox for example, in which case we want to set a
+ * drag handler in two ways
+ *
+ * We so need to introduce some abstractions here...
+ */
+
+ if (GIMP_IS_DOCKBOOK (widget))
+ {
+ gimp_dockbook_set_drag_handler (GIMP_DOCKBOOK (widget),
+ drag_handler);
+ }
+
+ if (GIMP_IS_DOCK (widget))
+ {
+ GimpPanedBox *dock_paned_box = NULL;
+ dock_paned_box = GIMP_PANED_BOX (gimp_dock_get_vbox (GIMP_DOCK (widget)));
+ gimp_paned_box_set_drag_handler (dock_paned_box, drag_handler);
+ }
+
+ if (GIMP_IS_TOOLBOX (widget))
+ {
+ GimpToolbox *toolbox = GIMP_TOOLBOX (widget);
+ gimp_toolbox_set_drag_handler (toolbox, drag_handler);
+ }
+}
+
+static gint
+gimp_paned_box_get_drop_area_size (GimpPanedBox *paned_box)
+{
+ gint drop_area_size = 0;
+
+ if (! paned_box->p->widgets)
+ {
+ GtkAllocation allocation;
+ GtkOrientation orientation;
+
+ gtk_widget_get_allocation (GTK_WIDGET (paned_box), &allocation);
+ orientation = gtk_orientable_get_orientation (GTK_ORIENTABLE (paned_box));
+
+ if (orientation == GTK_ORIENTATION_HORIZONTAL)
+ drop_area_size = allocation.width;
+ else if (orientation == GTK_ORIENTATION_VERTICAL)
+ drop_area_size = allocation.height;
+ }
+
+ drop_area_size = MAX (drop_area_size, DROP_AREA_SIZE);
+
+ return drop_area_size;
+}
+
+static gboolean
+gimp_paned_box_get_handle_drag (GimpPanedBox *paned_box,
+ GdkDragContext *context,
+ gint x,
+ gint y,
+ guint time,
+ gint *insert_index,
+ GeglRectangle *area)
+{
+ gint index = INSERT_INDEX_UNUSED;
+ GtkAllocation allocation = { 0, };
+ gint area_x = 0;
+ gint area_y = 0;
+ gint area_w = 0;
+ gint area_h = 0;
+ GtkOrientation orientation = 0;
+ gint drop_area_size = gimp_paned_box_get_drop_area_size (paned_box);
+
+ if (gimp_paned_box_will_handle_drag (paned_box->p->drag_handler,
+ GTK_WIDGET (paned_box),
+ context,
+ x, y,
+ time))
+ {
+ return FALSE;
+ }
+
+ if (gtk_drag_dest_find_target (GTK_WIDGET (paned_box), context, NULL) ==
+ GDK_NONE)
+ {
+ return FALSE;
+ }
+
+ gtk_widget_get_allocation (GTK_WIDGET (paned_box), &allocation);
+
+ /* See if we're at the edge of the dock If there are no dockables,
+ * the entire paned box is a drop area
+ */
+ orientation = gtk_orientable_get_orientation (GTK_ORIENTABLE (paned_box));
+ if (orientation == GTK_ORIENTATION_HORIZONTAL)
+ {
+ area_y = 0;
+ area_h = allocation.height;
+
+ /* If there are no widgets, the drop area is as big as the paned
+ * box
+ */
+ if (! paned_box->p->widgets)
+ area_w = allocation.width;
+ else
+ area_w = drop_area_size;
+
+ if (x < drop_area_size)
+ {
+ index = 0;
+ area_x = 0;
+ }
+ if (x > allocation.width - drop_area_size)
+ {
+ index = -1;
+ area_x = allocation.width - drop_area_size;
+ }
+ }
+ else /* if (orientation = GTK_ORIENTATION_VERTICAL) */
+ {
+ area_x = 0;
+ area_w = allocation.width;
+
+ /* If there are no widgets, the drop area is as big as the paned
+ * box
+ */
+ if (! paned_box->p->widgets)
+ area_h = allocation.height;
+ else
+ area_h = drop_area_size;
+
+ if (y < drop_area_size)
+ {
+ index = 0;
+ area_y = 0;
+ }
+ if (y > allocation.height - drop_area_size)
+ {
+ index = -1;
+ area_y = allocation.height - drop_area_size;
+ }
+ }
+
+ if (area)
+ {
+ area->x = allocation.x + area_x;
+ area->y = allocation.y + area_y;
+ area->width = area_w;
+ area->height = area_h;
+ }
+
+ if (insert_index)
+ *insert_index = index;
+
+ return index != INSERT_INDEX_UNUSED;
+}
+
+static void
+gimp_paned_box_position_drop_indicator (GimpPanedBox *paned_box,
+ gint index,
+ gint x,
+ gint y,
+ gint width,
+ gint height,
+ gdouble opacity)
+{
+ GtkWidget *widget = GTK_WIDGET (paned_box);
+ GdkWindow *window = paned_box->p->dnd_windows[index];
+ GtkStyle *style = gtk_widget_get_style (widget);
+ GtkStateType state = gtk_widget_get_state (widget);
+ GimpRGB bg;
+ GimpRGB fg;
+ GdkColor color;
+
+ if (! gtk_widget_is_drawable (widget))
+ return;
+
+ /* Create or move the GdkWindow in place */
+ if (! window)
+ {
+ GtkAllocation allocation;
+ GdkWindowAttr attributes;
+
+ gtk_widget_get_allocation (widget, &allocation);
+
+ attributes.x = x;
+ attributes.y = y;
+ attributes.width = width;
+ attributes.height = height;
+ attributes.window_type = GDK_WINDOW_CHILD;
+ attributes.wclass = GDK_INPUT_OUTPUT;
+ attributes.event_mask = gtk_widget_get_events (widget);
+
+ window = gdk_window_new (gtk_widget_get_window (widget),
+ &attributes,
+ GDK_WA_X | GDK_WA_Y);
+ gdk_window_set_user_data (window, widget);
+
+ paned_box->p->dnd_windows[index] = window;
+ }
+ else
+ {
+ gdk_window_move_resize (window,
+ x, y,
+ width, height);
+ }
+
+ gimp_rgb_set_uchar (&bg,
+ style->bg[state].red >> 8,
+ style->bg[state].green >> 8,
+ style->bg[state].blue >> 8);
+ bg.a = 1.0;
+
+ gimp_rgb_parse_hex (&fg, DROP_HIGHLIGHT_COLOR, -1);
+ fg.a = opacity;
+
+ gimp_rgb_composite (&bg, &fg, GIMP_RGB_COMPOSITE_NORMAL);
+
+ color.red = bg.r * 0xffff;
+ color.green = bg.g * 0xffff;
+ color.blue = bg.b * 0xffff;
+
+ gdk_rgb_find_color (gtk_widget_get_colormap (widget), &color);
+
+ gdk_window_set_background (window, &color);
+
+ gdk_window_show (window);
+}
+
+static void
+gimp_paned_box_hide_drop_indicator (GimpPanedBox *paned_box,
+ gint index)
+{
+ if (! paned_box->p->dnd_windows[index])
+ return;
+
+ gdk_window_hide (paned_box->p->dnd_windows[index]);
+}
+
+static void
+gimp_paned_box_drag_leave (GtkWidget *widget,
+ GdkDragContext *context,
+ guint time)
+{
+ GimpPanedBox *paned_box = GIMP_PANED_BOX (widget);
+
+ gimp_paned_box_hide_drop_indicator (paned_box, 0);
+}
+
+static gboolean
+gimp_paned_box_drag_motion (GtkWidget *widget,
+ GdkDragContext *context,
+ gint x,
+ gint y,
+ guint time)
+{
+ GimpPanedBox *paned_box = GIMP_PANED_BOX (widget);
+ gint insert_index;
+ GeglRectangle area;
+ gboolean handle;
+
+ handle = gimp_paned_box_get_handle_drag (paned_box, context, x, y, time,
+ &insert_index, &area);
+
+ /* If we are at the edge, show a GdkWindow to communicate that a
+ * drop will create a new dock column
+ */
+ if (handle)
+ {
+ gimp_paned_box_position_drop_indicator (paned_box,
+ 0,
+ area.x,
+ area.y,
+ area.width,
+ area.height,
+ DROP_HIGHLIGHT_OPACITY_ACTIVE);
+ }
+ else
+ {
+ gimp_paned_box_hide_drop_indicator (paned_box, 0);
+ }
+
+ /* Save the insert index for drag-drop */
+ paned_box->p->insert_index = insert_index;
+
+ gdk_drag_status (context, handle ? GDK_ACTION_MOVE : 0, time);
+
+ /* Return TRUE so drag_leave() is called */
+ return handle;
+}
+
+static gboolean
+gimp_paned_box_drag_drop (GtkWidget *widget,
+ GdkDragContext *context,
+ gint x,
+ gint y,
+ guint time)
+{
+ GimpPanedBox *paned_box = GIMP_PANED_BOX (widget);
+ gboolean dropped = FALSE;
+
+ if (gimp_paned_box_will_handle_drag (paned_box->p->drag_handler,
+ widget,
+ context,
+ x, y,
+ time))
+ {
+ return FALSE;
+ }
+
+ if (paned_box->p->dropped_cb)
+ {
+ GtkWidget *source = gtk_drag_get_source_widget (context);
+
+ if (source)
+ dropped = paned_box->p->dropped_cb (source,
+ paned_box->p->insert_index,
+ paned_box->p->dropped_cb_data);
+ }
+
+ gtk_drag_finish (context, dropped, TRUE, time);
+
+ return TRUE;
+}
+
+static gboolean
+gimp_paned_box_drag_callback_idle (GimpPanedBox *paned_box)
+{
+ GtkAllocation allocation;
+ GtkOrientation orientation;
+ GeglRectangle area;
+
+ paned_box->p->dnd_idle_id = 0;
+
+ gtk_widget_get_allocation (GTK_WIDGET (paned_box), &allocation);
+ orientation = gtk_orientable_get_orientation (GTK_ORIENTABLE (paned_box));
+
+ #define ADD_AREA(index, left, top) \
+ if (gimp_paned_box_get_handle_drag ( \
+ paned_box, \
+ paned_box->p->dnd_context, \
+ (left), (top), \
+ 0, \
+ NULL, &area)) \
+ { \
+ gimp_paned_box_position_drop_indicator ( \
+ paned_box, \
+ index, \
+ area.x, area.y, area.width, area.height, \
+ DROP_HIGHLIGHT_OPACITY_INACTIVE); \
+ }
+
+ if (! paned_box->p->widgets)
+ {
+ ADD_AREA (1, allocation.width / 2, allocation.height / 2)
+ }
+ else if (orientation == GTK_ORIENTATION_HORIZONTAL)
+ {
+ ADD_AREA (1, 0, allocation.height / 2)
+ ADD_AREA (2, allocation.width - 1, allocation.height / 2)
+ }
+ else
+ {
+ ADD_AREA (1, allocation.width / 2, 0)
+ ADD_AREA (2, allocation.width / 2, allocation.height - 1)
+ }
+
+ #undef ADD_AREA
+
+ return G_SOURCE_REMOVE;
+}
+
+static void
+gimp_paned_box_drag_callback (GdkDragContext *context,
+ gboolean begin,
+ GimpPanedBox *paned_box)
+{
+ GtkWidget *paned;
+ gint position;
+
+ if (! gtk_widget_get_sensitive (GTK_WIDGET (paned_box)))
+ return;
+
+ paned = gtk_widget_get_ancestor (GTK_WIDGET (paned_box),
+ GTK_TYPE_PANED);
+
+ /* apparently, we can be called multiple times when beginning a drag
+ * (possibly a gtk bug); make sure not to leak the idle.
+ *
+ * see issue #4895.
+ */
+ if (begin && ! paned_box->p->dnd_context)
+ {
+ paned_box->p->dnd_context = context;
+
+ if (paned)
+ {
+ GtkAllocation allocation;
+
+ gtk_widget_get_allocation (paned, &allocation);
+
+ position = gtk_paned_get_position (GTK_PANED (paned));
+
+ paned_box->p->dnd_paned_position = position;
+
+ if (position < 0)
+ {
+ position = 0;
+ }
+ else if (gtk_widget_is_ancestor (
+ GTK_WIDGET (paned_box),
+ gtk_paned_get_child2 (GTK_PANED (paned))))
+ {
+ position = allocation.width - position;
+ }
+
+ if (position < DROP_HIGHLIGHT_MIN_SIZE)
+ {
+ position = DROP_HIGHLIGHT_MIN_SIZE;
+
+ if (gtk_widget_is_ancestor (
+ GTK_WIDGET (paned_box),
+ gtk_paned_get_child2 (GTK_PANED (paned))))
+ {
+ position = allocation.width - position;
+ }
+
+ gtk_paned_set_position (GTK_PANED (paned), position);
+ }
+ }
+
+ paned_box->p->dnd_idle_id = g_idle_add (
+ (GSourceFunc) gimp_paned_box_drag_callback_idle,
+ paned_box);
+ }
+ else if (! begin && paned_box->p->dnd_context)
+ {
+ if (paned_box->p->dnd_idle_id)
+ {
+ g_source_remove (paned_box->p->dnd_idle_id);
+
+ paned_box->p->dnd_idle_id = 0;
+ }
+
+ paned_box->p->dnd_context = NULL;
+
+ gimp_paned_box_hide_drop_indicator (paned_box, 1);
+ gimp_paned_box_hide_drop_indicator (paned_box, 2);
+
+ if (paned)
+ {
+ gtk_paned_set_position (GTK_PANED (paned),
+ paned_box->p->dnd_paned_position);
+ }
+ }
+}
+
+
+GtkWidget *
+gimp_paned_box_new (gboolean homogeneous,
+ gint spacing,
+ GtkOrientation orientation)
+{
+ return g_object_new (GIMP_TYPE_PANED_BOX,
+ "homogeneous", homogeneous,
+ "spacing", 0,
+ "orientation", orientation,
+ NULL);
+}
+
+void
+gimp_paned_box_set_dropped_cb (GimpPanedBox *paned_box,
+ GimpPanedBoxDroppedFunc dropped_cb,
+ gpointer dropped_cb_data)
+{
+ g_return_if_fail (GIMP_IS_PANED_BOX (paned_box));
+
+ paned_box->p->dropped_cb = dropped_cb;
+ paned_box->p->dropped_cb_data = dropped_cb_data;
+}
+
+/**
+ * gimp_paned_box_add_widget:
+ * @paned_box: A #GimpPanedBox
+ * @widget: The #GtkWidget to add
+ * @index: Where to add the @widget
+ *
+ * Add a #GtkWidget to the #GimpPanedBox in a hierarchy of #GtkPaned:s
+ * so the space can be manually distributed between the widgets.
+ **/
+void
+gimp_paned_box_add_widget (GimpPanedBox *paned_box,
+ GtkWidget *widget,
+ gint index)
+{
+ gint old_length = 0;
+
+ g_return_if_fail (GIMP_IS_PANED_BOX (paned_box));
+ g_return_if_fail (GTK_IS_WIDGET (widget));
+
+ GIMP_LOG (DND, "Adding GtkWidget %p to GimpPanedBox %p", widget, paned_box);
+
+ /* Calculate length */
+ old_length = g_list_length (paned_box->p->widgets);
+
+ /* If index is invalid append at the end */
+ if (index >= old_length || index < 0)
+ {
+ index = old_length;
+ }
+
+ /* Insert into the list */
+ paned_box->p->widgets = g_list_insert (paned_box->p->widgets, widget, index);
+
+ /* Hook us in for drag events. We could abstract this but it doesn't
+ * seem worth it at this point
+ */
+ gimp_paned_box_set_widget_drag_handler (widget, paned_box);
+
+ /* Insert into the GtkPaned hierarchy */
+ if (old_length == 0)
+ {
+ gtk_box_pack_start (GTK_BOX (paned_box), widget, TRUE, TRUE, 0);
+ }
+ else
+ {
+ GtkWidget *old_widget;
+ GtkWidget *parent;
+ GtkWidget *paned;
+ GtkOrientation orientation;
+
+ /* Figure out what widget to detach */
+ if (index == 0)
+ {
+ old_widget = g_list_nth_data (paned_box->p->widgets, index + 1);
+ }
+ else
+ {
+ old_widget = g_list_nth_data (paned_box->p->widgets, index - 1);
+ }
+
+ parent = gtk_widget_get_parent (old_widget);
+
+ if (old_length > 1 && index > 0)
+ {
+ GtkWidget *grandparent = gtk_widget_get_parent (parent);
+
+ old_widget = parent;
+ parent = grandparent;
+ }
+
+ /* Detach the widget and build up a new hierarchy */
+ g_object_ref (old_widget);
+ gtk_container_remove (GTK_CONTAINER (parent), old_widget);
+
+ /* GtkPaned is abstract :( */
+ orientation = gtk_orientable_get_orientation (GTK_ORIENTABLE (paned_box));
+ paned = gtk_paned_new (orientation);
+
+ if (GTK_IS_PANED (parent))
+ {
+ gtk_paned_pack1 (GTK_PANED (parent), paned, TRUE, FALSE);
+ }
+ else
+ {
+ gtk_box_pack_start (GTK_BOX (parent), paned, TRUE, TRUE, 0);
+ }
+ gtk_widget_show (paned);
+
+ if (index == 0)
+ {
+ gtk_paned_pack1 (GTK_PANED (paned), widget,
+ TRUE, FALSE);
+ gtk_paned_pack2 (GTK_PANED (paned), old_widget,
+ TRUE, FALSE);
+ }
+ else
+ {
+ gtk_paned_pack1 (GTK_PANED (paned), old_widget,
+ TRUE, FALSE);
+ gtk_paned_pack2 (GTK_PANED (paned), widget,
+ TRUE, FALSE);
+ }
+
+ g_object_unref (old_widget);
+ }
+}
+
+/**
+ * gimp_paned_box_remove_widget:
+ * @paned_box: A #GimpPanedBox
+ * @widget: The #GtkWidget to remove
+ *
+ * Remove a #GtkWidget from a #GimpPanedBox added with
+ * gimp_widgets_add_paned_widget().
+ **/
+void
+gimp_paned_box_remove_widget (GimpPanedBox *paned_box,
+ GtkWidget *widget)
+{
+ gint old_length = 0;
+ gint index = 0;
+ GtkWidget *other_widget = NULL;
+ GtkWidget *parent = NULL;
+ GtkWidget *grandparent = NULL;
+
+ g_return_if_fail (GIMP_IS_PANED_BOX (paned_box));
+ g_return_if_fail (GTK_IS_WIDGET (widget));
+
+ GIMP_LOG (DND, "Removing GtkWidget %p from GimpPanedBox %p", widget, paned_box);
+
+ /* Calculate length and index */
+ old_length = g_list_length (paned_box->p->widgets);
+ index = g_list_index (paned_box->p->widgets, widget);
+
+ /* Remove from list */
+ paned_box->p->widgets = g_list_remove (paned_box->p->widgets, widget);
+
+ /* Reset the drag events hook */
+ gimp_paned_box_set_widget_drag_handler (widget, NULL);
+
+ /* Remove from widget hierarchy */
+ if (old_length == 1)
+ {
+ /* The widget might already be parent-less if we are in
+ * destruction, .e.g when closing a dock window.
+ */
+ if (gtk_widget_get_parent (widget) != NULL)
+ gtk_container_remove (GTK_CONTAINER (paned_box), widget);
+ }
+ else
+ {
+ g_object_ref (widget);
+
+ parent = gtk_widget_get_parent (GTK_WIDGET (widget));
+ grandparent = gtk_widget_get_parent (parent);
+
+ if (index == 0)
+ other_widget = gtk_paned_get_child2 (GTK_PANED (parent));
+ else
+ other_widget = gtk_paned_get_child1 (GTK_PANED (parent));
+
+ g_object_ref (other_widget);
+
+ gtk_container_remove (GTK_CONTAINER (parent), other_widget);
+ gtk_container_remove (GTK_CONTAINER (parent), GTK_WIDGET (widget));
+
+ gtk_container_remove (GTK_CONTAINER (grandparent), parent);
+
+ if (GTK_IS_PANED (grandparent))
+ gtk_paned_pack1 (GTK_PANED (grandparent), other_widget, TRUE, FALSE);
+ else
+ gtk_box_pack_start (GTK_BOX (paned_box), other_widget, TRUE, TRUE, 0);
+
+ g_object_unref (other_widget);
+
+ g_object_unref (widget);
+ }
+}
+
+/**
+ * gimp_paned_box_will_handle_drag:
+ * @paned_box: A #GimpPanedBox
+ * @widget: The widget that got the drag event
+ * @context: Context from drag event
+ * @x: x from drag event
+ * @y: y from drag event
+ * @time: time from drag event
+ *
+ * Returns: %TRUE if the drag event on @widget will be handled by
+ * @paned_box.
+ **/
+gboolean
+gimp_paned_box_will_handle_drag (GimpPanedBox *paned_box,
+ GtkWidget *widget,
+ GdkDragContext *context,
+ gint x,
+ gint y,
+ gint time)
+{
+ gint paned_box_x = 0;
+ gint paned_box_y = 0;
+ GtkAllocation allocation = { 0, };
+ GtkOrientation orientation = 0;
+ gboolean will_handle = FALSE;
+ gint drop_area_size = 0;
+
+ g_return_val_if_fail (paned_box == NULL ||
+ GIMP_IS_PANED_BOX (paned_box), FALSE);
+
+ /* Check for NULL to allow cleaner client code */
+ if (paned_box == NULL)
+ return FALSE;
+
+ /* Our handler might handle it */
+ if (gimp_paned_box_will_handle_drag (paned_box->p->drag_handler,
+ widget,
+ context,
+ x, y,
+ time))
+ {
+ /* Return TRUE so the client will pass on the drag event */
+ return TRUE;
+ }
+
+ /* If we don't have a common ancenstor we will not handle it */
+ if (! gtk_widget_translate_coordinates (widget,
+ GTK_WIDGET (paned_box),
+ x, y,
+ &paned_box_x, &paned_box_y))
+ {
+ /* Return FALSE so the client can take care of the drag event */
+ return FALSE;
+ }
+
+ /* We now have paned_box coordinates, see if the paned_box will
+ * handle the event
+ */
+ gtk_widget_get_allocation (GTK_WIDGET (paned_box), &allocation);
+ orientation = gtk_orientable_get_orientation (GTK_ORIENTABLE (paned_box));
+ drop_area_size = gimp_paned_box_get_drop_area_size (paned_box);
+ if (orientation == GTK_ORIENTATION_HORIZONTAL)
+ {
+ will_handle = (paned_box_x < drop_area_size ||
+ paned_box_x > allocation.width - drop_area_size);
+ }
+ else /*if (orientation = GTK_ORIENTATION_VERTICAL)*/
+ {
+ will_handle = (paned_box_y < drop_area_size ||
+ paned_box_y > allocation.height - drop_area_size);
+ }
+
+ return will_handle;
+}
+
+void
+gimp_paned_box_set_drag_handler (GimpPanedBox *paned_box,
+ GimpPanedBox *drag_handler)
+{
+ g_return_if_fail (GIMP_IS_PANED_BOX (paned_box));
+
+ paned_box->p->drag_handler = drag_handler;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-18 06:47:59 +0000