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gtk-demo: Port blur demo from GtkBin

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This commit is contained in:
Matthias Clasen 2020-05-03 16:32:33 -04:00
parent d8e47383cb
commit fa848e94d2
3 changed files with 32 additions and 47 deletions
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70
demos/gtk-demo/bluroverlay.c
View File

@ -39,7 +39,7 @@ enum {
static guint signals[LAST_SIGNAL] = { 0 };
static GQuark child_data_quark = 0;
G_DEFINE_TYPE (BlurOverlay, blur_overlay, GTK_TYPE_BIN)
G_DEFINE_TYPE (BlurOverlay, blur_overlay, GTK_TYPE_WIDGET)
static void
blur_overlay_set_overlay_child (GtkWidget *widget,
@ -204,7 +204,7 @@ blur_overlay_size_allocate (GtkWidget *widget,
GtkWidget *child;
GtkWidget *main_widget;
main_widget = gtk_overlay_get_child (GTK_OVERLAY (overlay));
main_widget = overlay->main_widget;
if (main_widget && gtk_widget_get_visible (main_widget))
gtk_widget_size_allocate (main_widget,
&(GtkAllocation) {
@ -290,43 +290,6 @@ blur_overlay_get_child_position (BlurOverlay *overlay,
return TRUE;
}
static void
blur_overlay_add (GtkContainer *container,
GtkWidget *widget)
{
BlurOverlay *overlay = BLUR_OVERLAY (container);
gtk_widget_insert_after (widget, GTK_WIDGET (container), NULL);
overlay->main_widget = widget;
}
static void
blur_overlay_remove (GtkContainer *container,
GtkWidget *widget)
{
BlurOverlay *overlay = BLUR_OVERLAY (container);
gtk_widget_unparent (widget);
if (overlay->main_widget == widget)
overlay->main_widget = NULL;
}
static void
blur_overlay_forall (GtkContainer *overlay,
GtkCallback callback,
gpointer callback_data)
{
GtkWidget *child;
child = gtk_widget_get_first_child (GTK_WIDGET (overlay));
while (child != NULL)
{
GtkWidget *next = gtk_widget_get_next_sibling (child);
(* callback) (child, callback_data);
child = next;
}
}
static void
blur_overlay_snapshot (GtkWidget *widget,
GtkSnapshot *snapshot)
@ -420,21 +383,32 @@ blur_overlay_snapshot (GtkWidget *widget,
gsk_render_node_unref (main_widget_node);
}
static void
blur_overlay_dispose (GObject *object)
{
BlurOverlay *overlay = BLUR_OVERLAY (object);
GtkWidget *child;
g_clear_pointer (&overlay->main_widget, gtk_widget_unparent);
while ((child = gtk_widget_get_first_child (GTK_WIDGET (overlay))))
gtk_widget_unparent (child);
G_OBJECT_CLASS (blur_overlay_parent_class)->dispose (object);
}
static void
blur_overlay_class_init (BlurOverlayClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
GtkContainerClass *container_class = GTK_CONTAINER_CLASS (klass);
object_class->dispose = blur_overlay_dispose;
widget_class->measure = blur_overlay_measure;
widget_class->size_allocate = blur_overlay_size_allocate;
widget_class->snapshot = blur_overlay_snapshot;
container_class->add = blur_overlay_add;
container_class->remove = blur_overlay_remove;
container_class->forall = blur_overlay_forall;
klass->get_child_position = blur_overlay_get_child_position;
signals[GET_CHILD_POSITION] =
@ -477,3 +451,11 @@ blur_overlay_add_overlay (BlurOverlay *overlay,
blur_overlay_set_overlay_child (widget, child);
}
void
blur_overlay_set_child (BlurOverlay *overlay,
GtkWidget *widget)
{
gtk_widget_insert_after (widget, GTK_WIDGET (overlay), NULL);
overlay->main_widget = widget;
}

7
demos/gtk-demo/bluroverlay.h
View File

@ -37,14 +37,14 @@ typedef struct _BlurOverlayClass BlurOverlayClass;
struct _BlurOverlay
{
GtkBin parent_instance;
GtkWidget parent_instance;
GtkWidget *main_widget;
};
struct _BlurOverlayClass
{
GtkBinClass parent_class;
GtkWidgetClass parent_class;
gboolean (*get_child_position) (BlurOverlay *overlay,
GtkWidget *widget,
@ -59,6 +59,9 @@ GDK_AVAILABLE_IN_ALL
void blur_overlay_add_overlay (BlurOverlay *overlay,
GtkWidget *widget,
double blur);
GDK_AVAILABLE_IN_ALL
void blur_overlay_set_child (BlurOverlay *overlay,
GtkWidget *widget);
G_END_DECLS

2
demos/gtk-demo/transparent.c
View File

@ -58,7 +58,7 @@ do_transparent (GtkWidget *do_widget)
blur_overlay_add_overlay (BLUR_OVERLAY (overlay), button, 5.0);
picture = gtk_picture_new_for_resource ("/transparent/portland-rose.jpg");
gtk_overlay_set_child (GTK_OVERLAY (overlay), picture);
blur_overlay_set_child (BLUR_OVERLAY (overlay), picture);
}
if (!gtk_widget_get_visible (window))