mirror of
https://gitlab.gnome.org/GNOME/gtk.git
synced 2024-11-14 04:31:09 +00:00
166 lines
3.9 KiB
C
166 lines
3.9 KiB
C
/* Benchmark/Frames
|
|
*
|
|
* This demo is intentionally as simple as possible, to see what
|
|
* framerate the windowing system can deliver on its own.
|
|
*
|
|
* It does nothing but change the drawn color, for every frame.
|
|
*/
|
|
|
|
#include <gtk/gtk.h>
|
|
|
|
typedef struct
|
|
{
|
|
GtkWidget parent_instance;
|
|
|
|
GdkRGBA color1;
|
|
GdkRGBA color2;
|
|
guint64 time2;
|
|
float t;
|
|
|
|
guint tick_cb;
|
|
} ColorWidget;
|
|
|
|
typedef struct
|
|
{
|
|
GtkWidgetClass parent_class;
|
|
} ColorWidgetClass;
|
|
|
|
G_DEFINE_TYPE (ColorWidget, color_widget, GTK_TYPE_WIDGET)
|
|
|
|
#define TIME_SPAN (3.0 * G_TIME_SPAN_SECOND)
|
|
|
|
static gboolean
|
|
change_color (GtkWidget *widget,
|
|
GdkFrameClock *frame_clock,
|
|
gpointer data)
|
|
{
|
|
ColorWidget *color = (ColorWidget *)widget;
|
|
gint64 time;
|
|
|
|
time = gdk_frame_clock_get_frame_time (frame_clock);
|
|
|
|
if (time >= color->time2)
|
|
{
|
|
color->time2 = time + TIME_SPAN;
|
|
|
|
color->color1 = color->color2;
|
|
color->color2.red = g_random_double_range (0, 1);
|
|
color->color2.green = g_random_double_range (0, 1);
|
|
color->color2.blue = g_random_double_range (0, 1);
|
|
color->color2.alpha = 1;
|
|
}
|
|
|
|
color->t = 1 - (color->time2 - time) / TIME_SPAN;
|
|
|
|
gtk_widget_queue_draw (widget);
|
|
|
|
return G_SOURCE_CONTINUE;
|
|
}
|
|
|
|
static void
|
|
color_widget_snapshot (GtkWidget *widget,
|
|
GtkSnapshot *snapshot)
|
|
{
|
|
ColorWidget *color = (ColorWidget *)widget;
|
|
float w, h;
|
|
GdkRGBA c;
|
|
|
|
w = gtk_widget_get_width (widget);
|
|
h = gtk_widget_get_height (widget);
|
|
|
|
c.red = (1 - color->t) * color->color1.red + color->t * color->color2.red;
|
|
c.green = (1 - color->t) * color->color1.green + color->t * color->color2.green;
|
|
c.blue = (1 - color->t) * color->color1.blue + color->t * color->color2.blue;
|
|
c.alpha = 1;
|
|
|
|
gtk_snapshot_append_color (snapshot, &c, &GRAPHENE_RECT_INIT (0, 0, w, h));
|
|
}
|
|
|
|
static void
|
|
color_widget_init (ColorWidget *color)
|
|
{
|
|
gtk_widget_add_tick_callback (GTK_WIDGET (color), change_color, NULL, NULL);
|
|
gtk_widget_set_hexpand (GTK_WIDGET (color), TRUE);
|
|
gtk_widget_set_vexpand (GTK_WIDGET (color), TRUE);
|
|
}
|
|
|
|
static void
|
|
color_widget_class_init (ColorWidgetClass *class)
|
|
{
|
|
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
|
|
|
|
widget_class->snapshot = color_widget_snapshot;
|
|
}
|
|
|
|
GtkWidget *
|
|
color_widget_new (void)
|
|
{
|
|
return g_object_new (color_widget_get_type (), NULL);
|
|
}
|
|
|
|
static gboolean
|
|
update_fps_label (gpointer data)
|
|
{
|
|
GtkWidget *label = GTK_WIDGET (data);
|
|
GdkFrameClock *frame_clock;
|
|
|
|
frame_clock = gtk_widget_get_frame_clock (label);
|
|
|
|
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
|
|
remove_id (gpointer data)
|
|
{
|
|
guint id = GPOINTER_TO_UINT (data);
|
|
|
|
g_source_remove (id);
|
|
}
|
|
|
|
GtkWidget *
|
|
do_frames (GtkWidget *do_widget)
|
|
{
|
|
static GtkWidget *window = NULL;
|
|
|
|
if (!window)
|
|
{
|
|
GtkBuilder *builder;
|
|
GtkWidget *box;
|
|
GtkWidget *label;
|
|
guint id;
|
|
|
|
builder = gtk_builder_new_from_resource ("/frames/frames.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"));
|
|
box = GTK_WIDGET (gtk_builder_get_object (builder, "box"));
|
|
|
|
gtk_box_append (GTK_BOX (box), color_widget_new ());
|
|
|
|
id = g_timeout_add (500, update_fps_label, label);
|
|
g_object_set_data_full (G_OBJECT (label), "tick_cb",
|
|
GUINT_TO_POINTER (id), remove_id);
|
|
}
|
|
|
|
if (!gtk_widget_get_visible (window))
|
|
gtk_widget_show (window);
|
|
else
|
|
gtk_window_destroy (GTK_WINDOW (window));
|
|
|
|
return window;
|
|
}
|