mirror of
https://gitlab.gnome.org/GNOME/gtk.git
synced 2024-11-10 10:50:10 +00:00
121 lines
2.7 KiB
C
121 lines
2.7 KiB
C
|
|
#include <gtk/gtk.h>
|
|
|
|
|
|
|
|
struct _GtkBlurBox
|
|
{
|
|
GtkBox parent_instance;
|
|
|
|
double radius;
|
|
};
|
|
typedef struct _GtkBlurBox GtkBlurBox;
|
|
|
|
struct _GtkBlurBoxClass
|
|
{
|
|
GtkBoxClass parent_class;
|
|
};
|
|
typedef struct _GtkBlurBoxClass GtkBlurBoxClass;
|
|
|
|
|
|
G_DEFINE_TYPE (GtkBlurBox, gtk_blur_box, GTK_TYPE_BOX)
|
|
|
|
|
|
static void
|
|
snapshot_blur (GtkWidget *widget,
|
|
GtkSnapshot *snapshot)
|
|
{
|
|
GtkBlurBox *box = (GtkBlurBox *) widget;
|
|
|
|
gtk_snapshot_push_blur (snapshot, box->radius);
|
|
|
|
GTK_WIDGET_CLASS (gtk_blur_box_parent_class)->snapshot (widget, snapshot);
|
|
|
|
gtk_snapshot_pop (snapshot);
|
|
}
|
|
|
|
|
|
static void
|
|
gtk_blur_box_init (GtkBlurBox *box) {
|
|
box->radius = 1;
|
|
}
|
|
|
|
static void
|
|
gtk_blur_box_class_init (GtkBlurBoxClass *klass)
|
|
{
|
|
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
|
|
|
|
widget_class->snapshot = snapshot_blur;
|
|
}
|
|
|
|
static void
|
|
value_changed_cb (GtkRange *range,
|
|
gpointer user_data)
|
|
{
|
|
GtkBlurBox *box = user_data;
|
|
double value = gtk_range_get_value (range);
|
|
|
|
box->radius = value;
|
|
gtk_widget_queue_draw (GTK_WIDGET (box));
|
|
}
|
|
|
|
static void
|
|
value_changed_cb2 (GtkRange *range,
|
|
gpointer user_data)
|
|
{
|
|
GtkLabel *label = user_data;
|
|
double value = gtk_range_get_value (range);
|
|
char *text;
|
|
|
|
text = g_strdup_printf ("%.2f", value);
|
|
gtk_label_set_label (label, text);
|
|
g_free (text);
|
|
}
|
|
|
|
int
|
|
main (int argc, char **argv)
|
|
{
|
|
GtkWidget *window;
|
|
GtkWidget *blur_box;
|
|
GtkWidget *scale;
|
|
GtkWidget *value_label;
|
|
|
|
gtk_init ();
|
|
|
|
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
|
|
blur_box = g_object_new (gtk_blur_box_get_type (),
|
|
"orientation", GTK_ORIENTATION_VERTICAL,
|
|
"spacing", 32,
|
|
NULL);
|
|
|
|
value_label = gtk_label_new ("FF");
|
|
gtk_widget_set_margin_top (value_label, 32);
|
|
{
|
|
PangoAttrList *attrs;
|
|
|
|
attrs = pango_attr_list_new ();
|
|
pango_attr_list_insert (attrs, pango_attr_scale_new (6.0));
|
|
gtk_label_set_attributes (GTK_LABEL (value_label), attrs);
|
|
pango_attr_list_unref (attrs);
|
|
}
|
|
gtk_container_add (GTK_CONTAINER (blur_box), value_label);
|
|
|
|
|
|
scale = gtk_scale_new_with_range (GTK_ORIENTATION_HORIZONTAL, 0, 10, 0.05);
|
|
gtk_widget_set_size_request (scale, 200, -1);
|
|
gtk_widget_set_halign (scale, GTK_ALIGN_CENTER);
|
|
gtk_widget_set_valign (scale, GTK_ALIGN_CENTER);
|
|
gtk_widget_set_hexpand (scale, TRUE);
|
|
g_signal_connect (scale, "value-changed", G_CALLBACK (value_changed_cb), blur_box);
|
|
g_signal_connect (scale, "value-changed", G_CALLBACK (value_changed_cb2), value_label);
|
|
|
|
|
|
gtk_container_add (GTK_CONTAINER (blur_box), scale);
|
|
gtk_container_add (GTK_CONTAINER (window), blur_box);
|
|
|
|
gtk_widget_show (window);
|
|
gtk_main ();
|
|
|
|
return 0;
|
|
}
|