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#include <gtk/gtk.h>
struct _GtkBlurBox
{
GtkBox parent_instance;
double radius;
};
typedef struct _GtkBlurBox GtkBlurBox;
struct _GtkBlurBoxClass
{
GtkBoxClass parent_class;
};
typedef struct _GtkBlurBoxClass GtkBlurBoxClass;
static GType gtk_blur_box_get_type (void);
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 = 0;
}
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);
}
static void
quit_cb (GtkWidget *widget,
gpointer data)
{
gboolean *done = data;
*done = TRUE;
g_main_context_wakeup (NULL);
}
int
main (int argc, char **argv)
{
GtkWidget *window;
GtkWidget *blur_box;
GtkWidget *scale;
GtkWidget *value_label;
gboolean done = FALSE;
gtk_init ();
window = gtk_window_new ();
g_signal_connect (window, "destroy", G_CALLBACK (quit_cb), &done);
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_box_append (GTK_BOX (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_box_append (GTK_BOX (blur_box), scale);
gtk_window_set_child (GTK_WINDOW (window), blur_box);
gtk_widget_show (window);
while (!done)
g_main_context_iteration (NULL, TRUE);
return 0;
}
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