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-rw-r--r--app/widgets/gimpview.c856
1 files changed, 856 insertions, 0 deletions
diff --git a/app/widgets/gimpview.c b/app/widgets/gimpview.c
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--- /dev/null
+++ b/app/widgets/gimpview.c
@@ -0,0 +1,856 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimpview.c
+ * Copyright (C) 2001-2006 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 <string.h>
+
+#include <gegl.h>
+#include <gtk/gtk.h>
+
+#include "libgimpcolor/gimpcolor.h"
+#include "libgimpmath/gimpmath.h"
+#include "libgimpbase/gimpbase.h"
+#include "libgimpwidgets/gimpwidgets.h"
+
+#include "widgets-types.h"
+
+#include "core/gimpcontext.h"
+#include "core/gimpmarshal.h"
+#include "core/gimpviewable.h"
+
+#include "gimpdnd.h"
+#include "gimpview.h"
+#include "gimpview-popup.h"
+#include "gimpviewrenderer.h"
+#include "gimpviewrenderer-utils.h"
+
+
+enum
+{
+ SET_VIEWABLE,
+ CLICKED,
+ DOUBLE_CLICKED,
+ CONTEXT,
+ LAST_SIGNAL
+};
+
+
+static void gimp_view_dispose (GObject *object);
+
+static void gimp_view_realize (GtkWidget *widget);
+static void gimp_view_unrealize (GtkWidget *widget);
+static void gimp_view_map (GtkWidget *widget);
+static void gimp_view_unmap (GtkWidget *widget);
+static void gimp_view_size_request (GtkWidget *widget,
+ GtkRequisition *requisition);
+static void gimp_view_size_allocate (GtkWidget *widget,
+ GtkAllocation *allocation);
+static void gimp_view_style_set (GtkWidget *widget,
+ GtkStyle *prev_style);
+static gboolean gimp_view_expose_event (GtkWidget *widget,
+ GdkEventExpose *event);
+static gboolean gimp_view_button_press_event (GtkWidget *widget,
+ GdkEventButton *bevent);
+static gboolean gimp_view_button_release_event (GtkWidget *widget,
+ GdkEventButton *bevent);
+static gboolean gimp_view_enter_notify_event (GtkWidget *widget,
+ GdkEventCrossing *event);
+static gboolean gimp_view_leave_notify_event (GtkWidget *widget,
+ GdkEventCrossing *event);
+
+static void gimp_view_real_set_viewable (GimpView *view,
+ GimpViewable *old,
+ GimpViewable *viewable);
+
+static void gimp_view_update_callback (GimpViewRenderer *renderer,
+ GimpView *view);
+
+static void gimp_view_monitor_changed (GimpView *view);
+
+static GimpViewable * gimp_view_drag_viewable (GtkWidget *widget,
+ GimpContext **context,
+ gpointer data);
+static GdkPixbuf * gimp_view_drag_pixbuf (GtkWidget *widget,
+ gpointer data);
+
+
+G_DEFINE_TYPE (GimpView, gimp_view, GTK_TYPE_WIDGET)
+
+#define parent_class gimp_view_parent_class
+
+static guint view_signals[LAST_SIGNAL] = { 0 };
+
+
+static void
+gimp_view_class_init (GimpViewClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+ GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
+
+ view_signals[SET_VIEWABLE] =
+ g_signal_new ("set-viewable",
+ G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_FIRST,
+ G_STRUCT_OFFSET (GimpViewClass, set_viewable),
+ NULL, NULL,
+ gimp_marshal_VOID__OBJECT_OBJECT,
+ G_TYPE_NONE, 2,
+ GIMP_TYPE_VIEWABLE, GIMP_TYPE_VIEWABLE);
+
+ view_signals[CLICKED] =
+ g_signal_new ("clicked",
+ G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_FIRST,
+ G_STRUCT_OFFSET (GimpViewClass, clicked),
+ NULL, NULL,
+ gimp_marshal_VOID__FLAGS,
+ G_TYPE_NONE, 1,
+ GDK_TYPE_MODIFIER_TYPE);
+
+ view_signals[DOUBLE_CLICKED] =
+ g_signal_new ("double-clicked",
+ G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_FIRST,
+ G_STRUCT_OFFSET (GimpViewClass, double_clicked),
+ NULL, NULL,
+ gimp_marshal_VOID__VOID,
+ G_TYPE_NONE, 0);
+
+ view_signals[CONTEXT] =
+ g_signal_new ("context",
+ G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_FIRST,
+ G_STRUCT_OFFSET (GimpViewClass, context),
+ NULL, NULL,
+ gimp_marshal_VOID__VOID,
+ G_TYPE_NONE, 0);
+
+ object_class->dispose = gimp_view_dispose;
+
+ widget_class->activate_signal = view_signals[CLICKED];
+ widget_class->realize = gimp_view_realize;
+ widget_class->unrealize = gimp_view_unrealize;
+ widget_class->map = gimp_view_map;
+ widget_class->unmap = gimp_view_unmap;
+ widget_class->size_request = gimp_view_size_request;
+ widget_class->size_allocate = gimp_view_size_allocate;
+ widget_class->style_set = gimp_view_style_set;
+ widget_class->expose_event = gimp_view_expose_event;
+ widget_class->button_press_event = gimp_view_button_press_event;
+ widget_class->button_release_event = gimp_view_button_release_event;
+ widget_class->enter_notify_event = gimp_view_enter_notify_event;
+ widget_class->leave_notify_event = gimp_view_leave_notify_event;
+
+ klass->set_viewable = gimp_view_real_set_viewable;
+ klass->clicked = NULL;
+ klass->double_clicked = NULL;
+ klass->context = NULL;
+}
+
+static void
+gimp_view_init (GimpView *view)
+{
+ gtk_widget_set_has_window (GTK_WIDGET (view), FALSE);
+ gtk_widget_add_events (GTK_WIDGET (view),
+ GDK_BUTTON_PRESS_MASK |
+ GDK_BUTTON_RELEASE_MASK |
+ GDK_ENTER_NOTIFY_MASK |
+ GDK_LEAVE_NOTIFY_MASK);
+
+ view->clickable = FALSE;
+ view->eat_button_events = TRUE;
+ view->show_popup = FALSE;
+ view->expand = FALSE;
+
+ view->in_button = FALSE;
+ view->has_grab = FALSE;
+ view->press_state = 0;
+
+ gimp_widget_track_monitor (GTK_WIDGET (view),
+ G_CALLBACK (gimp_view_monitor_changed),
+ NULL);
+}
+
+static void
+gimp_view_dispose (GObject *object)
+{
+ GimpView *view = GIMP_VIEW (object);
+
+ if (view->viewable)
+ gimp_view_set_viewable (view, NULL);
+
+ g_clear_object (&view->renderer);
+
+ G_OBJECT_CLASS (parent_class)->dispose (object);
+}
+
+static void
+gimp_view_realize (GtkWidget *widget)
+{
+ GimpView *view = GIMP_VIEW (widget);
+ GtkAllocation allocation;
+ GdkWindowAttr attributes;
+ gint attributes_mask;
+
+ GTK_WIDGET_CLASS (parent_class)->realize (widget);
+
+ gtk_widget_get_allocation (widget, &allocation);
+
+ attributes.window_type = GDK_WINDOW_CHILD;
+ attributes.x = allocation.x;
+ attributes.y = allocation.y;
+ attributes.width = allocation.width;
+ attributes.height = allocation.height;
+ attributes.wclass = GDK_INPUT_ONLY;
+ attributes.event_mask = gtk_widget_get_events (widget);
+
+ attributes_mask = GDK_WA_X | GDK_WA_Y;
+
+ view->event_window = gdk_window_new (gtk_widget_get_window (widget),
+ &attributes, attributes_mask);
+ gdk_window_set_user_data (view->event_window, view);
+}
+
+static void
+gimp_view_unrealize (GtkWidget *widget)
+{
+ GimpView *view = GIMP_VIEW (widget);
+
+ if (view->event_window)
+ {
+ gdk_window_set_user_data (view->event_window, NULL);
+ gdk_window_destroy (view->event_window);
+ view->event_window = NULL;
+ }
+
+ GTK_WIDGET_CLASS (parent_class)->unrealize (widget);
+}
+
+static void
+gimp_view_map (GtkWidget *widget)
+{
+ GimpView *view = GIMP_VIEW (widget);
+
+ GTK_WIDGET_CLASS (parent_class)->map (widget);
+
+ if (view->event_window)
+ gdk_window_show (view->event_window);
+}
+
+static void
+gimp_view_unmap (GtkWidget *widget)
+{
+ GimpView *view = GIMP_VIEW (widget);
+
+ if (view->has_grab)
+ {
+ gtk_grab_remove (widget);
+ view->has_grab = FALSE;
+ }
+
+ if (view->event_window)
+ gdk_window_hide (view->event_window);
+
+ GTK_WIDGET_CLASS (parent_class)->unmap (widget);
+}
+
+static void
+gimp_view_size_request (GtkWidget *widget,
+ GtkRequisition *requisition)
+{
+ GimpView *view = GIMP_VIEW (widget);
+
+ if (view->expand)
+ {
+ requisition->width = 2 * view->renderer->border_width + 1;
+ requisition->height = 2 * view->renderer->border_width + 1;
+ }
+ else
+ {
+ requisition->width = (view->renderer->width +
+ 2 * view->renderer->border_width);
+ requisition->height = (view->renderer->height +
+ 2 * view->renderer->border_width);
+ }
+}
+
+static void
+gimp_view_size_allocate (GtkWidget *widget,
+ GtkAllocation *allocation)
+{
+ GimpView *view = GIMP_VIEW (widget);
+ gint width;
+ gint height;
+
+ if (view->expand)
+ {
+ width = MIN (GIMP_VIEWABLE_MAX_PREVIEW_SIZE,
+ allocation->width - 2 * view->renderer->border_width);
+ height = MIN (GIMP_VIEWABLE_MAX_PREVIEW_SIZE,
+ allocation->height - 2 * view->renderer->border_width);
+
+ if (view->renderer->width != width ||
+ view->renderer->height != height)
+ {
+ gint border_width = view->renderer->border_width;
+
+ if (view->renderer->size != -1 && view->renderer->viewable)
+ {
+ gint view_width;
+ gint view_height;
+ gint scaled_width;
+ gint scaled_height;
+
+ gimp_viewable_get_preview_size (view->renderer->viewable,
+ GIMP_VIEWABLE_MAX_PREVIEW_SIZE,
+ view->renderer->is_popup,
+ view->renderer->dot_for_dot,
+ &view_width,
+ &view_height);
+
+ gimp_viewable_calc_preview_size (view_width, view_height,
+ width, height,
+ TRUE, 1.0, 1.0,
+ &scaled_width, &scaled_height,
+ NULL);
+
+ if (scaled_width > width)
+ {
+ scaled_height = scaled_height * width / scaled_width;
+ scaled_width = scaled_width * width / scaled_width;
+ }
+ else if (scaled_height > height)
+ {
+ scaled_width = scaled_width * height / scaled_height;
+ scaled_height = scaled_height * height / scaled_height;
+ }
+
+ gimp_view_renderer_set_size (view->renderer,
+ MAX (scaled_width, scaled_height),
+ border_width);
+ }
+ else
+ {
+ gimp_view_renderer_set_size_full (view->renderer,
+ width, height,
+ border_width);
+ }
+
+ gimp_view_renderer_remove_idle (view->renderer);
+ }
+ }
+
+ width = (view->renderer->width +
+ 2 * view->renderer->border_width);
+ height = (view->renderer->height +
+ 2 * view->renderer->border_width);
+
+ if (allocation->width > width)
+ allocation->x += (allocation->width - width) / 2;
+
+ if (allocation->height > height)
+ allocation->y += (allocation->height - height) / 2;
+
+ allocation->width = width;
+ allocation->height = height;
+
+ GTK_WIDGET_CLASS (parent_class)->size_allocate (widget, allocation);
+
+ if (gtk_widget_get_realized (widget))
+ gdk_window_move_resize (view->event_window,
+ allocation->x,
+ allocation->y,
+ allocation->width,
+ allocation->height);
+}
+
+static void
+gimp_view_style_set (GtkWidget *widget,
+ GtkStyle *prev_style)
+{
+ GimpView *view = GIMP_VIEW (widget);
+
+ GTK_WIDGET_CLASS (parent_class)->style_set (widget, prev_style);
+
+ gimp_view_renderer_invalidate (view->renderer);
+}
+
+static gboolean
+gimp_view_expose_event (GtkWidget *widget,
+ GdkEventExpose *event)
+{
+ if (gtk_widget_is_drawable (widget))
+ {
+ GtkAllocation allocation;
+ cairo_t *cr;
+
+ gtk_widget_get_allocation (widget, &allocation);
+
+ cr = gdk_cairo_create (event->window);
+ gdk_cairo_region (cr, event->region);
+ cairo_clip (cr);
+
+ cairo_translate (cr, allocation.x, allocation.y);
+
+ gimp_view_renderer_draw (GIMP_VIEW (widget)->renderer,
+ widget, cr,
+ allocation.width,
+ allocation.height);
+
+ cairo_destroy (cr);
+ }
+
+ return FALSE;
+}
+
+
+#define DEBUG_MEMSIZE 1
+
+#ifdef DEBUG_MEMSIZE
+extern gboolean gimp_debug_memsize;
+#endif
+
+static gboolean
+gimp_view_button_press_event (GtkWidget *widget,
+ GdkEventButton *bevent)
+{
+ GimpView *view = GIMP_VIEW (widget);
+
+#ifdef DEBUG_MEMSIZE
+ if (bevent->type == GDK_BUTTON_PRESS && bevent->button == 2)
+ {
+ gimp_debug_memsize = TRUE;
+
+ gimp_object_get_memsize (GIMP_OBJECT (view->viewable), NULL);
+
+ gimp_debug_memsize = FALSE;
+ }
+#endif /* DEBUG_MEMSIZE */
+
+ if (! view->clickable &&
+ ! view->show_popup)
+ return FALSE;
+
+ if (! gtk_widget_get_realized (widget))
+ return FALSE;
+
+ if (bevent->type == GDK_BUTTON_PRESS)
+ {
+ if (gdk_event_triggers_context_menu ((GdkEvent *) bevent))
+ {
+ view->press_state = 0;
+
+ g_signal_emit (widget, view_signals[CONTEXT], 0);
+ }
+ else if (bevent->button == 1)
+ {
+ gtk_grab_add (widget);
+
+ view->has_grab = TRUE;
+ view->press_state = bevent->state;
+
+ if (view->show_popup && view->viewable)
+ {
+ gimp_view_popup_show (widget, bevent,
+ view->renderer->context,
+ view->viewable,
+ view->renderer->width,
+ view->renderer->height,
+ view->renderer->dot_for_dot);
+ }
+ }
+ else
+ {
+ view->press_state = 0;
+
+ if (bevent->button == 2)
+ gimp_view_popup_show (widget, bevent,
+ view->renderer->context,
+ view->viewable,
+ view->renderer->width,
+ view->renderer->height,
+ view->renderer->dot_for_dot);
+
+ return FALSE;
+ }
+ }
+ else if (bevent->type == GDK_2BUTTON_PRESS)
+ {
+ if (bevent->button == 1)
+ g_signal_emit (widget, view_signals[DOUBLE_CLICKED], 0);
+ }
+
+ return view->eat_button_events ? TRUE : FALSE;
+}
+
+static gboolean
+gimp_view_button_release_event (GtkWidget *widget,
+ GdkEventButton *bevent)
+{
+ GimpView *view = GIMP_VIEW (widget);
+
+ if (! view->clickable &&
+ ! view->show_popup)
+ return FALSE;
+
+ if (bevent->button == 1)
+ {
+ gtk_grab_remove (widget);
+ view->has_grab = FALSE;
+
+ if (view->clickable && view->in_button)
+ {
+ g_signal_emit (widget, view_signals[CLICKED], 0, view->press_state);
+ }
+ }
+ else
+ {
+ return FALSE;
+ }
+
+ return view->eat_button_events ? TRUE : FALSE;
+}
+
+static gboolean
+gimp_view_enter_notify_event (GtkWidget *widget,
+ GdkEventCrossing *event)
+{
+ GimpView *view = GIMP_VIEW (widget);
+ GtkWidget *event_widget = gtk_get_event_widget ((GdkEvent *) event);
+
+ if ((event_widget == widget) &&
+ (event->detail != GDK_NOTIFY_INFERIOR))
+ {
+ view->in_button = TRUE;
+ }
+
+ return FALSE;
+}
+
+static gboolean
+gimp_view_leave_notify_event (GtkWidget *widget,
+ GdkEventCrossing *event)
+{
+ GimpView *view = GIMP_VIEW (widget);
+ GtkWidget *event_widget = gtk_get_event_widget ((GdkEvent *) event);
+
+ if ((event_widget == widget) &&
+ (event->detail != GDK_NOTIFY_INFERIOR))
+ {
+ view->in_button = FALSE;
+ }
+
+ return FALSE;
+}
+
+static void
+gimp_view_real_set_viewable (GimpView *view,
+ GimpViewable *old,
+ GimpViewable *viewable)
+{
+ GType viewable_type = G_TYPE_NONE;
+
+ if (viewable == view->viewable)
+ return;
+
+ if (viewable)
+ {
+ viewable_type = G_TYPE_FROM_INSTANCE (viewable);
+
+ g_return_if_fail (g_type_is_a (viewable_type,
+ view->renderer->viewable_type));
+ }
+
+ if (view->viewable)
+ {
+ g_object_remove_weak_pointer (G_OBJECT (view->viewable),
+ (gpointer) &view->viewable);
+
+ if (! viewable && ! view->renderer->is_popup)
+ {
+ if (gimp_dnd_viewable_source_remove (GTK_WIDGET (view),
+ G_TYPE_FROM_INSTANCE (view->viewable)))
+ {
+ if (gimp_viewable_get_size (view->viewable, NULL, NULL))
+ gimp_dnd_pixbuf_source_remove (GTK_WIDGET (view));
+
+ gtk_drag_source_unset (GTK_WIDGET (view));
+ }
+ }
+ }
+ else if (viewable && ! view->renderer->is_popup)
+ {
+ if (gimp_dnd_drag_source_set_by_type (GTK_WIDGET (view),
+ GDK_BUTTON1_MASK | GDK_BUTTON2_MASK,
+ viewable_type,
+ GDK_ACTION_COPY))
+ {
+ gimp_dnd_viewable_source_add (GTK_WIDGET (view),
+ viewable_type,
+ gimp_view_drag_viewable,
+ NULL);
+
+ if (gimp_viewable_get_size (viewable, NULL, NULL))
+ gimp_dnd_pixbuf_source_add (GTK_WIDGET (view),
+ gimp_view_drag_pixbuf,
+ NULL);
+ }
+ }
+
+ gimp_view_renderer_set_viewable (view->renderer, viewable);
+ view->viewable = viewable;
+
+ if (view->viewable)
+ {
+ g_object_add_weak_pointer (G_OBJECT (view->viewable),
+ (gpointer) &view->viewable);
+ }
+}
+
+/* public functions */
+
+GtkWidget *
+gimp_view_new (GimpContext *context,
+ GimpViewable *viewable,
+ gint size,
+ gint border_width,
+ gboolean is_popup)
+{
+ GtkWidget *view;
+
+ g_return_val_if_fail (context == NULL || GIMP_IS_CONTEXT (context), NULL);
+ g_return_val_if_fail (GIMP_IS_VIEWABLE (viewable), NULL);
+
+ view = gimp_view_new_by_types (context,
+ GIMP_TYPE_VIEW,
+ G_TYPE_FROM_INSTANCE (viewable),
+ size, border_width, is_popup);
+
+ if (view)
+ gimp_view_set_viewable (GIMP_VIEW (view), viewable);
+
+ gimp_view_renderer_remove_idle (GIMP_VIEW (view)->renderer);
+
+ return view;
+}
+
+GtkWidget *
+gimp_view_new_full (GimpContext *context,
+ GimpViewable *viewable,
+ gint width,
+ gint height,
+ gint border_width,
+ gboolean is_popup,
+ gboolean clickable,
+ gboolean show_popup)
+{
+ GtkWidget *view;
+
+ g_return_val_if_fail (context == NULL || GIMP_IS_CONTEXT (context), NULL);
+ g_return_val_if_fail (GIMP_IS_VIEWABLE (viewable), NULL);
+
+ view = gimp_view_new_full_by_types (context,
+ GIMP_TYPE_VIEW,
+ G_TYPE_FROM_INSTANCE (viewable),
+ width, height, border_width,
+ is_popup, clickable, show_popup);
+
+ if (view)
+ gimp_view_set_viewable (GIMP_VIEW (view), viewable);
+
+ gimp_view_renderer_remove_idle (GIMP_VIEW (view)->renderer);
+
+ return view;
+}
+
+GtkWidget *
+gimp_view_new_by_types (GimpContext *context,
+ GType view_type,
+ GType viewable_type,
+ gint size,
+ gint border_width,
+ gboolean is_popup)
+{
+ GimpViewRenderer *renderer;
+ GimpView *view;
+
+ g_return_val_if_fail (context == NULL || GIMP_IS_CONTEXT (context), NULL);
+ g_return_val_if_fail (g_type_is_a (view_type, GIMP_TYPE_VIEW), NULL);
+ g_return_val_if_fail (g_type_is_a (viewable_type, GIMP_TYPE_VIEWABLE), NULL);
+ g_return_val_if_fail (size > 0 &&
+ size <= GIMP_VIEWABLE_MAX_PREVIEW_SIZE, NULL);
+ g_return_val_if_fail (border_width >= 0 &&
+ border_width <= GIMP_VIEW_MAX_BORDER_WIDTH, NULL);
+
+ renderer = gimp_view_renderer_new (context, viewable_type, size,
+ border_width, is_popup);
+
+ g_return_val_if_fail (renderer != NULL, NULL);
+
+ view = g_object_new (view_type, NULL);
+
+ g_signal_connect (renderer, "update",
+ G_CALLBACK (gimp_view_update_callback),
+ view);
+
+ view->renderer = renderer;
+
+ return GTK_WIDGET (view);
+}
+
+GtkWidget *
+gimp_view_new_full_by_types (GimpContext *context,
+ GType view_type,
+ GType viewable_type,
+ gint width,
+ gint height,
+ gint border_width,
+ gboolean is_popup,
+ gboolean clickable,
+ gboolean show_popup)
+{
+ GimpViewRenderer *renderer;
+ GimpView *view;
+
+ g_return_val_if_fail (context == NULL || GIMP_IS_CONTEXT (context), NULL);
+ g_return_val_if_fail (g_type_is_a (view_type, GIMP_TYPE_VIEW), NULL);
+ g_return_val_if_fail (g_type_is_a (viewable_type, GIMP_TYPE_VIEWABLE), NULL);
+ g_return_val_if_fail (width > 0 &&
+ width <= GIMP_VIEWABLE_MAX_PREVIEW_SIZE, NULL);
+ g_return_val_if_fail (height > 0 &&
+ height <= GIMP_VIEWABLE_MAX_PREVIEW_SIZE, NULL);
+ g_return_val_if_fail (border_width >= 0 &&
+ border_width <= GIMP_VIEW_MAX_BORDER_WIDTH, NULL);
+
+ renderer = gimp_view_renderer_new_full (context, viewable_type,
+ width, height, border_width,
+ is_popup);
+
+ g_return_val_if_fail (renderer != NULL, NULL);
+
+ view = g_object_new (view_type, NULL);
+
+ g_signal_connect (renderer, "update",
+ G_CALLBACK (gimp_view_update_callback),
+ view);
+
+ view->renderer = renderer;
+ view->clickable = clickable ? TRUE : FALSE;
+ view->show_popup = show_popup ? TRUE : FALSE;
+
+ return GTK_WIDGET (view);
+}
+
+GimpViewable *
+gimp_view_get_viewable (GimpView *view)
+{
+ g_return_val_if_fail (GIMP_IS_VIEW (view), NULL);
+
+ return view->viewable;
+}
+
+void
+gimp_view_set_viewable (GimpView *view,
+ GimpViewable *viewable)
+{
+ g_return_if_fail (GIMP_IS_VIEW (view));
+ g_return_if_fail (viewable == NULL || GIMP_IS_VIEWABLE (viewable));
+
+ if (viewable == view->viewable)
+ return;
+
+ g_signal_emit (view, view_signals[SET_VIEWABLE], 0, view->viewable, viewable);
+}
+
+void
+gimp_view_set_expand (GimpView *view,
+ gboolean expand)
+{
+ g_return_if_fail (GIMP_IS_VIEW (view));
+
+ if (view->expand != expand)
+ {
+ view->expand = expand ? TRUE : FALSE;
+ gtk_widget_queue_resize (GTK_WIDGET (view));
+ }
+}
+
+
+/* private functions */
+
+static void
+gimp_view_update_callback (GimpViewRenderer *renderer,
+ GimpView *view)
+{
+ GtkWidget *widget = GTK_WIDGET (view);
+ GtkRequisition requisition;
+ gint width;
+ gint height;
+
+ gtk_widget_get_requisition (widget, &requisition);
+
+ width = renderer->width + 2 * renderer->border_width;
+ height = renderer->height + 2 * renderer->border_width;
+
+ if (width != requisition.width ||
+ height != requisition.height)
+ {
+ gtk_widget_queue_resize (widget);
+ }
+ else
+ {
+ gtk_widget_queue_draw (widget);
+ }
+}
+
+static void
+gimp_view_monitor_changed (GimpView *view)
+{
+ if (view->renderer)
+ gimp_view_renderer_free_color_transform (view->renderer);
+}
+
+static GimpViewable *
+gimp_view_drag_viewable (GtkWidget *widget,
+ GimpContext **context,
+ gpointer data)
+{
+ if (context)
+ *context = GIMP_VIEW (widget)->renderer->context;
+
+ return GIMP_VIEW (widget)->viewable;
+}
+
+static GdkPixbuf *
+gimp_view_drag_pixbuf (GtkWidget *widget,
+ gpointer data)
+{
+ GimpView *view = GIMP_VIEW (widget);
+ GimpViewable *viewable = view->viewable;
+ gint width;
+ gint height;
+
+ if (viewable && gimp_viewable_get_size (viewable, &width, &height))
+ return gimp_viewable_get_new_pixbuf (viewable, view->renderer->context,
+ width, height);
+
+ return NULL;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-11 14:40:10 +0000