mirror of
https://gitlab.gnome.org/GNOME/gtk.git
synced 2024-12-27 14:10:30 +00:00
f8f391ceb9
The DND part of this demo was broken by recent icon theme changes. Make it work again. And make the demo nicer by breaking out a DemoImage widget.
260 lines
7.6 KiB
C
260 lines
7.6 KiB
C
#include "demoimage.h"
|
|
#include <glib/gi18n.h>
|
|
|
|
struct _DemoImage {
|
|
GtkWidget parent_instance;
|
|
|
|
GtkWidget *image;
|
|
GtkWidget *popover;
|
|
};
|
|
|
|
enum {
|
|
PROP_ICON_NAME = 1
|
|
};
|
|
|
|
G_DEFINE_TYPE(DemoImage, demo_image, GTK_TYPE_WIDGET)
|
|
|
|
static GdkPaintable *
|
|
get_image_paintable (GtkImage *image)
|
|
{
|
|
const gchar *icon_name;
|
|
GtkIconTheme *icon_theme;
|
|
GtkIconPaintable *icon;
|
|
|
|
switch (gtk_image_get_storage_type (image))
|
|
{
|
|
case GTK_IMAGE_PAINTABLE:
|
|
return g_object_ref (gtk_image_get_paintable (image));
|
|
case GTK_IMAGE_ICON_NAME:
|
|
icon_name = gtk_image_get_icon_name (image);
|
|
icon_theme = gtk_icon_theme_get_for_display (gtk_widget_get_display (GTK_WIDGET (image)));
|
|
icon = gtk_icon_theme_lookup_icon (icon_theme,
|
|
icon_name,
|
|
NULL,
|
|
48, 1,
|
|
gtk_widget_get_direction (GTK_WIDGET (image)),
|
|
0);
|
|
if (icon == NULL)
|
|
return NULL;
|
|
return GDK_PAINTABLE (icon);
|
|
|
|
case GTK_IMAGE_EMPTY:
|
|
case GTK_IMAGE_GICON:
|
|
default:
|
|
g_warning ("Image storage type %d not handled",
|
|
gtk_image_get_storage_type (image));
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
static void
|
|
drag_begin (GtkDragSource *source,
|
|
GdkDrag *drag,
|
|
gpointer data)
|
|
{
|
|
GtkWidget *widget = gtk_event_controller_get_widget (GTK_EVENT_CONTROLLER (source));
|
|
DemoImage *demo = DEMO_IMAGE (widget);
|
|
GdkPaintable *paintable;
|
|
|
|
paintable = get_image_paintable (GTK_IMAGE (demo->image));
|
|
if (paintable)
|
|
{
|
|
gtk_drag_icon_set_from_paintable (drag, paintable, -2, -2);
|
|
g_object_unref (paintable);
|
|
}
|
|
}
|
|
|
|
static GdkContentProvider *
|
|
prepare_drag (GtkDragSource *source,
|
|
double x,
|
|
double y,
|
|
gpointer data)
|
|
{
|
|
GtkWidget *widget = gtk_event_controller_get_widget (GTK_EVENT_CONTROLLER (source));
|
|
DemoImage *demo = DEMO_IMAGE (widget);
|
|
GdkPaintable *paintable = get_image_paintable (GTK_IMAGE (demo->image));
|
|
|
|
return gdk_content_provider_new_typed (GDK_TYPE_PAINTABLE, paintable);
|
|
}
|
|
|
|
static gboolean
|
|
drag_drop (GtkDropTarget *dest,
|
|
const GValue *value,
|
|
double x,
|
|
double y,
|
|
gpointer data)
|
|
{
|
|
GtkWidget *widget = gtk_event_controller_get_widget (GTK_EVENT_CONTROLLER (dest));
|
|
DemoImage *demo = DEMO_IMAGE (widget);
|
|
GdkPaintable *paintable = g_value_get_object (value);
|
|
|
|
gtk_image_set_from_paintable (GTK_IMAGE (demo->image), paintable);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
copy_image (GtkWidget *widget,
|
|
const char *action_name,
|
|
GVariant *parameter)
|
|
{
|
|
GdkClipboard *clipboard = gtk_widget_get_clipboard (widget);
|
|
DemoImage *demo = DEMO_IMAGE (widget);
|
|
GdkPaintable *paintable = get_image_paintable (GTK_IMAGE (demo->image));
|
|
GValue value = G_VALUE_INIT;
|
|
|
|
g_value_init (&value, GDK_TYPE_PAINTABLE);
|
|
g_value_set_object (&value, paintable);
|
|
gdk_clipboard_set_value (clipboard, &value);
|
|
g_value_unset (&value);
|
|
|
|
if (paintable)
|
|
g_object_unref (paintable);
|
|
}
|
|
|
|
static void
|
|
paste_image (GtkWidget *widget,
|
|
const char *action_name,
|
|
GVariant *parameter)
|
|
{
|
|
GdkClipboard *clipboard = gtk_widget_get_clipboard (widget);
|
|
DemoImage *demo = DEMO_IMAGE (widget);
|
|
GdkContentProvider *content = gdk_clipboard_get_content (clipboard);
|
|
GValue value = G_VALUE_INIT;
|
|
GdkPaintable *paintable;
|
|
|
|
g_value_init (&value, GDK_TYPE_PAINTABLE);
|
|
if (!gdk_content_provider_get_value (content, &value, NULL))
|
|
return;
|
|
|
|
paintable = GDK_PAINTABLE (g_value_get_object (&value));
|
|
gtk_image_set_from_paintable (GTK_IMAGE (demo->image), paintable);
|
|
g_value_unset (&value);
|
|
}
|
|
|
|
static void
|
|
pressed_cb (GtkGesture *gesture,
|
|
int n_press,
|
|
double x,
|
|
double y,
|
|
gpointer data)
|
|
{
|
|
DemoImage *demo = DEMO_IMAGE (gtk_event_controller_get_widget (GTK_EVENT_CONTROLLER (gesture)));
|
|
|
|
gtk_popover_popup (GTK_POPOVER (demo->popover));
|
|
}
|
|
|
|
static void
|
|
demo_image_init (DemoImage *demo)
|
|
{
|
|
GMenu *menu;
|
|
GMenuItem *item;
|
|
GtkDragSource *source;
|
|
GtkDropTarget *dest;
|
|
GtkGesture *gesture;
|
|
|
|
demo->image = gtk_image_new ();
|
|
gtk_image_set_pixel_size (GTK_IMAGE (demo->image), 48);
|
|
gtk_widget_set_parent (demo->image, GTK_WIDGET (demo));
|
|
|
|
menu = g_menu_new ();
|
|
item = g_menu_item_new (_("_Copy"), "clipboard.copy");
|
|
g_menu_append_item (menu, item);
|
|
|
|
item = g_menu_item_new (_("_Paste"), "clipboard.paste");
|
|
g_menu_append_item (menu, item);
|
|
|
|
demo->popover = gtk_popover_menu_new_from_model (G_MENU_MODEL (menu));
|
|
gtk_widget_set_parent (demo->popover, GTK_WIDGET (demo));
|
|
|
|
source = gtk_drag_source_new ();
|
|
g_signal_connect (source, "prepare", G_CALLBACK (prepare_drag), NULL);
|
|
g_signal_connect (source, "drag-begin", G_CALLBACK (drag_begin), NULL);
|
|
gtk_widget_add_controller (GTK_WIDGET (demo), GTK_EVENT_CONTROLLER (source));
|
|
|
|
dest = gtk_drop_target_new (GDK_TYPE_PAINTABLE, GDK_ACTION_COPY);
|
|
g_signal_connect (dest, "drop", G_CALLBACK (drag_drop), NULL);
|
|
gtk_widget_add_controller (GTK_WIDGET (demo), GTK_EVENT_CONTROLLER (dest));
|
|
|
|
gesture = gtk_gesture_click_new ();
|
|
gtk_gesture_single_set_button (GTK_GESTURE_SINGLE (gesture), GDK_BUTTON_SECONDARY);
|
|
g_signal_connect (gesture, "pressed", G_CALLBACK (pressed_cb), NULL);
|
|
gtk_widget_add_controller (GTK_WIDGET (demo), GTK_EVENT_CONTROLLER (gesture));
|
|
}
|
|
|
|
static void
|
|
demo_image_dispose (GObject *object)
|
|
{
|
|
DemoImage *demo = DEMO_IMAGE (object);
|
|
|
|
g_clear_pointer (&demo->image, gtk_widget_unparent);
|
|
g_clear_pointer (&demo->popover, gtk_widget_unparent);
|
|
|
|
G_OBJECT_CLASS (demo_image_parent_class)->dispose (object);
|
|
}
|
|
|
|
static void
|
|
demo_image_get_property (GObject *object,
|
|
guint prop_id,
|
|
GValue *value,
|
|
GParamSpec *pspec)
|
|
{
|
|
DemoImage *demo = DEMO_IMAGE (object);
|
|
|
|
switch (prop_id)
|
|
{
|
|
case PROP_ICON_NAME:
|
|
g_value_set_string (value, gtk_image_get_icon_name (GTK_IMAGE (demo->image)));
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
demo_image_set_property (GObject *object,
|
|
guint prop_id,
|
|
const GValue *value,
|
|
GParamSpec *pspec)
|
|
{
|
|
DemoImage *demo = DEMO_IMAGE (object);
|
|
|
|
switch (prop_id)
|
|
{
|
|
case PROP_ICON_NAME:
|
|
gtk_image_set_from_icon_name (GTK_IMAGE (demo->image),
|
|
g_value_get_string (value));
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
demo_image_class_init (DemoImageClass *class)
|
|
{
|
|
GObjectClass *object_class = G_OBJECT_CLASS (class);
|
|
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
|
|
|
|
object_class->dispose = demo_image_dispose;
|
|
object_class->get_property = demo_image_get_property;
|
|
object_class->set_property = demo_image_set_property;
|
|
|
|
g_object_class_install_property (object_class, PROP_ICON_NAME,
|
|
g_param_spec_string ("icon-name", "Icon name", "Icon name",
|
|
NULL, G_PARAM_READWRITE));
|
|
|
|
gtk_widget_class_set_layout_manager_type (widget_class, GTK_TYPE_BIN_LAYOUT);
|
|
|
|
gtk_widget_class_install_action (widget_class, "clipboard.copy", NULL, copy_image);
|
|
gtk_widget_class_install_action (widget_class, "clipboard.paste", NULL, paste_image);
|
|
}
|
|
|
|
GtkWidget *
|
|
demo_image_new (const char *icon_name)
|
|
{
|
|
return g_object_new (DEMO_TYPE_IMAGE, "icon-name", icon_name, NULL);
|
|
}
|