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/* Benchmark/Themes
*
* This demo continuously switches themes, like some of you.
*
* Warning: This demo involves rapidly flashing changes and may
* be hazardous to photosensitive viewers.
*/
#include <gtk/gtk.h>
static guint tick_cb;
typedef struct {
const char *name;
gboolean dark;
} Theme;
static Theme themes[] = {
{ "Adwaita", FALSE },
{ "Adwaita", TRUE },
{ "HighContrast", FALSE },
{ "HighContrastInverse", FALSE }
};
static int theme;
static gboolean
change_theme (GtkWidget *widget,
GdkFrameClock *frame_clock,
gpointer data)
{
GtkWidget *label = data;
Theme next = themes[theme++ % G_N_ELEMENTS (themes)];
char *name;
g_object_set (gtk_settings_get_default (),
"gtk-theme-name", next.name,
"gtk-application-prefer-dark-theme", next.dark,
NULL);
name = g_strconcat (next.name, next.dark ? " (dark)" : NULL, NULL);
gtk_window_set_title (GTK_WINDOW (widget), name);
g_free (name);
if (frame_clock)
{
char *fps;
fps = g_strdup_printf ("%.2f fps", gdk_frame_clock_get_fps (frame_clock));
gtk_label_set_label (GTK_LABEL (label), fps);
g_free (fps);
}
else
gtk_label_set_label (GTK_LABEL (label), "");
return G_SOURCE_CONTINUE;
}
static void
toggle_cycle (GObject *button,
GParamSpec *pspec,
gpointer data)
{
GtkWidget *warning = data;
gboolean active;
GtkWidget *window;
g_object_get (button, "active", &active, NULL);
window = gtk_widget_get_ancestor (GTK_WIDGET (button), GTK_TYPE_WINDOW);
if (active && !tick_cb)
{
gtk_window_present (GTK_WINDOW (warning));
}
else if (!active && tick_cb)
{
gtk_widget_remove_tick_callback (window, tick_cb);
tick_cb = 0;
}
}
static void
warning_closed (GtkDialog *warning,
int response_id,
gpointer data)
{
GtkWidget *window;
GtkWidget *button;
gtk_widget_hide (GTK_WIDGET (warning));
window = gtk_widget_get_ancestor (GTK_WIDGET (data), GTK_TYPE_WINDOW);
button = GTK_WIDGET (g_object_get_data (G_OBJECT (window), "button"));
if (response_id == GTK_RESPONSE_OK)
tick_cb = gtk_widget_add_tick_callback (window, change_theme, data, NULL);
else
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button), FALSE);
}
GtkWidget *
do_themes (GtkWidget *do_widget)
{
static GtkWidget *window = NULL;
if (!window)
{
GtkBuilder *builder;
GtkWidget *button;
GtkWidget *label;
GtkWidget *warning;
builder = gtk_builder_new_from_resource ("/themes/themes.ui");
window = GTK_WIDGET (gtk_builder_get_object (builder, "window"));
g_object_add_weak_pointer (G_OBJECT (window), (gpointer *)&window);
gtk_window_set_display (GTK_WINDOW (window),
gtk_widget_get_display (do_widget));
label = GTK_WIDGET (gtk_builder_get_object (builder, "fps"));
warning = GTK_WIDGET (gtk_builder_get_object (builder, "warning"));
g_signal_connect (warning, "response", G_CALLBACK (warning_closed), label);
button = GTK_WIDGET (gtk_builder_get_object (builder, "toggle"));
g_object_set_data (G_OBJECT (window), "button", button);
g_signal_connect (button, "notify::active", G_CALLBACK (toggle_cycle), warning);
gtk_widget_realize (window);
g_object_unref (builder);
}
if (!gtk_widget_get_visible (window))
gtk_widget_show (window);
else
gtk_window_destroy (GTK_WINDOW (window));
return window;
}
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