+}
+
+static void tick(void *p, double delta)
+{
+ static double elapsed = 0;
+ double seconds_per_frame = 1.0/15;
+ struct lbx_imginfo info;
+ GtkSpinButton *spin;
+ GtkToggleButton *play;
+ unsigned frame;
+
+ if (!image)
+ return;
+
+ lbximg_getinfo(image, &info);
+ spin = GTK_SPIN_BUTTON(gtk_builder_get_object(builder, "framespin"));
+ play = GTK_TOGGLE_BUTTON(gtk_builder_get_object(builder, "playbutton"));
+
+ frame = gtk_spin_button_get_value_as_int(spin);
+ if (!gtk_toggle_button_get_active(play))
+ return;
+
+ elapsed += delta;
+ while (elapsed > seconds_per_frame) {
+ elapsed -= seconds_per_frame;
+
+ if (++frame >= info.nframes) {
+ if (!info.looping) {
+ gtk_toggle_button_set_active(play, FALSE);
+ break;
+ }
+
+ frame = info.loopstart;
+ }
+
+ gtk_spin_button_set_value(spin, frame);
+ }
+}
+
+static gboolean timeout(gpointer data)
+{
+ static double lasttime = INFINITY;
+ static GTimer *timer;
+
+ if (isinf(lasttime)) {
+ timer = g_timer_new();
+ if (timer) {
+ lasttime = 0;
+ }
+ } else {
+ double time = g_timer_elapsed(timer, NULL);
+
+ tick(data, time - lasttime);
+ lasttime = time;
+ }
+
+ return TRUE;
+}
+
+gboolean canvas_expose(GtkWidget *canvas, GdkEventExpose *event, gpointer data)
+{
+ if (!framebuf)
+ return TRUE;
+
+ gdk_draw_rectangle(canvas->window, bg_gc, TRUE,
+ event->area.x, event->area.y,
+ event->area.width, event->area.height);
+
+ gdk_draw_pixbuf(canvas->window, NULL, framebuf,
+ event->area.x, event->area.y, event->area.x, event->area.y,
+ event->area.width, event->area.height,
+ GDK_RGB_DITHER_NORMAL, 0, 0);
+
+ return TRUE;
+}
+
+static int init_framedata(int reset)
+{
+ struct lbx_imginfo info;
+ GtkSpinButton *spin;
+
+ if (!image)
+ return 0;
+
+ lbximg_getinfo(image, &info);
+ framebuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8,
+ info.width, info.height);
+ if (!framebuf) {
+ printf("failed to allocate pixbuf\n");
+ return -1;
+ }
+
+ gtk_widget_set_size_request(canvas, info.width, info.height);
+
+ spin = GTK_SPIN_BUTTON(gtk_builder_get_object(builder, "framespin"));
+ gtk_spin_button_set_range(spin, 0, info.nframes-1);
+ gtk_spin_button_set_value(spin, 0);
+ set_frame(spin, NULL);