static void
maybe_start_idle (GdkFrameClockIdle *clock_idle)
{
GdkFrameClockIdlePrivate *priv = clock_idle->priv;
if (RUN_FLUSH_IDLE (priv) || RUN_PAINT_IDLE (priv))
{
guint min_interval = 0;
if (priv->min_next_frame_time != 0)
{
gint64 now = compute_frame_time (clock_idle);
gint64 min_interval_us = MAX (priv->min_next_frame_time, now) - now;
min_interval = (min_interval_us + 500) / 1000;
}
if (priv->flush_idle_id == 0 && RUN_FLUSH_IDLE (priv))
{
priv->flush_idle_id = gdk_threads_add_timeout_full (GDK_PRIORITY_EVENTS + 1,
min_interval,
gdk_frame_clock_flush_idle,
g_object_ref (clock_idle),
(GDestroyNotify) g_object_unref);
g_source_set_name_by_id (priv->flush_idle_id, "[gtk+] gdk_frame_clock_flush_idle");
}
if (!priv->in_paint_idle &&
priv->paint_idle_id == 0 && RUN_PAINT_IDLE (priv))
{
priv->paint_idle_id = gdk_threads_add_timeout_full (GDK_PRIORITY_REDRAW,
min_interval,
gdk_frame_clock_paint_idle,
g_object_ref (clock_idle),
(GDestroyNotify) g_object_unref);
g_source_set_name_by_id (priv->paint_idle_id, "[gtk+] gdk_frame_clock_paint_idle");
}
}
}
static gint64
gdk_frame_clock_idle_get_frame_time (GdkFrameClock *clock)
{
GdkFrameClockIdlePrivate *priv = GDK_FRAME_CLOCK_IDLE (clock)->priv;
gint64 computed_frame_time;
/* can't change frame time during a paint */
if (priv->phase != GDK_FRAME_CLOCK_PHASE_NONE &&
priv->phase != GDK_FRAME_CLOCK_PHASE_FLUSH_EVENTS)
return priv->frame_time;
/* Outside a paint, pick something close to "now" */
computed_frame_time = compute_frame_time (GDK_FRAME_CLOCK_IDLE (clock));
/* 16ms is 60fps. We only update frame time that often because we'd
* like to try to keep animations on the same start times.
* get_frame_time() would normally be used outside of a paint to
* record an animation start time for example.
*/
if ((computed_frame_time - priv->frame_time) > FRAME_INTERVAL)
priv->frame_time = computed_frame_time;
return priv->frame_time;
}
static gboolean
gdk_frame_clock_paint_idle (void *data)
{
GdkFrameClock *clock = GDK_FRAME_CLOCK (data);
GdkFrameClockIdle *clock_idle = GDK_FRAME_CLOCK_IDLE (clock);
GdkFrameClockIdlePrivate *priv = clock_idle->priv;
gboolean skip_to_resume_events;
GdkFrameTimings *timings = NULL;
priv->paint_idle_id = 0;
priv->in_paint_idle = TRUE;
priv->min_next_frame_time = 0;
skip_to_resume_events =
(priv->requested & ~(GDK_FRAME_CLOCK_PHASE_FLUSH_EVENTS | GDK_FRAME_CLOCK_PHASE_RESUME_EVENTS)) == 0 &&
priv->updating_count == 0;
if (priv->phase > GDK_FRAME_CLOCK_PHASE_BEFORE_PAINT)
{
timings = gdk_frame_clock_get_current_timings (clock);
}
if (!skip_to_resume_events)
{
switch (priv->phase)
{
case GDK_FRAME_CLOCK_PHASE_FLUSH_EVENTS:
break;
case GDK_FRAME_CLOCK_PHASE_NONE:
case GDK_FRAME_CLOCK_PHASE_BEFORE_PAINT:
if (priv->freeze_count == 0)
{
priv->frame_time = compute_frame_time (clock_idle);
_gdk_frame_clock_begin_frame (clock);
timings = gdk_frame_clock_get_current_timings (clock);
timings->frame_time = priv->frame_time;
timings->slept_before = priv->sleep_serial != get_sleep_serial ();
priv->phase = GDK_FRAME_CLOCK_PHASE_BEFORE_PAINT;
/* We always emit ::before-paint and ::after-paint if
* any of the intermediate phases are requested and
* they don't get repeated if you freeze/thaw while
* in them.
*/
priv->requested &= ~GDK_FRAME_CLOCK_PHASE_BEFORE_PAINT;
g_signal_emit_by_name (G_OBJECT (clock), "before-paint");
priv->phase = GDK_FRAME_CLOCK_PHASE_UPDATE;
}
/* fallthrough */
case GDK_FRAME_CLOCK_PHASE_UPDATE:
if (priv->freeze_count == 0)
{
if ((priv->requested & GDK_FRAME_CLOCK_PHASE_UPDATE) != 0 ||
priv->updating_count > 0)
{
priv->requested &= ~GDK_FRAME_CLOCK_PHASE_UPDATE;
g_signal_emit_by_name (G_OBJECT (clock), "update");
}
}
/* fallthrough */
case GDK_FRAME_CLOCK_PHASE_LAYOUT:
if (priv->freeze_count == 0)
{
int iter;
#ifdef G_ENABLE_DEBUG
if ((_gdk_debug_flags & GDK_DEBUG_FRAMES) != 0)
{
if (priv->phase != GDK_FRAME_CLOCK_PHASE_LAYOUT &&
(priv->requested & GDK_FRAME_CLOCK_PHASE_LAYOUT))
timings->layout_start_time = g_get_monotonic_time ();
}
#endif /* G_ENABLE_DEBUG */
priv->phase = GDK_FRAME_CLOCK_PHASE_LAYOUT;
/* We loop in the layout phase, because we don't want to progress
* into the paint phase with invalid size allocations. This may
* happen in some situation like races between user window
* resizes and natural size changes.
*/
iter = 0;
while ((priv->requested & GDK_FRAME_CLOCK_PHASE_LAYOUT) &&
priv->freeze_count == 0 && iter++ < 4)
{
priv->requested &= ~GDK_FRAME_CLOCK_PHASE_LAYOUT;
g_signal_emit_by_name (G_OBJECT (clock), "layout");
}
if (iter == 5)
g_warning ("gdk-frame-clock: layout continuously requested, giving up after 4 tries");
}
/* fallthrough */
case GDK_FRAME_CLOCK_PHASE_PAINT:
if (priv->freeze_count == 0)
{
#ifdef G_ENABLE_DEBUG
if ((_gdk_debug_flags & GDK_DEBUG_FRAMES) != 0)
{
if (priv->phase != GDK_FRAME_CLOCK_PHASE_PAINT &&
(priv->requested & GDK_FRAME_CLOCK_PHASE_PAINT))
timings->paint_start_time = g_get_monotonic_time ();
}
#endif /* G_ENABLE_DEBUG */
priv->phase = GDK_FRAME_CLOCK_PHASE_PAINT;
if (priv->requested & GDK_FRAME_CLOCK_PHASE_PAINT)
{
priv->requested &= ~GDK_FRAME_CLOCK_PHASE_PAINT;
g_signal_emit_by_name (G_OBJECT (clock), "paint");
}
}
/* fallthrough */
case GDK_FRAME_CLOCK_PHASE_AFTER_PAINT:
if (priv->freeze_count == 0)
{
priv->requested &= ~GDK_FRAME_CLOCK_PHASE_AFTER_PAINT;
g_signal_emit_by_name (G_OBJECT (clock), "after-paint");
/* the ::after-paint phase doesn't get repeated on freeze/thaw,
*/
priv->phase = GDK_FRAME_CLOCK_PHASE_NONE;
#ifdef G_ENABLE_DEBUG
if ((_gdk_debug_flags & GDK_DEBUG_FRAMES) != 0)
timings->frame_end_time = g_get_monotonic_time ();
#endif /* G_ENABLE_DEBUG */
}
/* fallthrough */
case GDK_FRAME_CLOCK_PHASE_RESUME_EVENTS:
;
}
}
#ifdef G_ENABLE_DEBUG
if ((_gdk_debug_flags & GDK_DEBUG_FRAMES) != 0)
{
if (timings && timings->complete)
_gdk_frame_clock_debug_print_timings (clock, timings);
}
#endif /* G_ENABLE_DEBUG */
if (priv->requested & GDK_FRAME_CLOCK_PHASE_RESUME_EVENTS)
{
priv->requested &= ~GDK_FRAME_CLOCK_PHASE_RESUME_EVENTS;
g_signal_emit_by_name (G_OBJECT (clock), "resume-events");
}
if (priv->freeze_count == 0)
priv->phase = GDK_FRAME_CLOCK_PHASE_NONE;
priv->in_paint_idle = FALSE;
/* If there is throttling in the backend layer, then we'll do another
* update as soon as the backend unthrottles (if there is work to do),
* otherwise we need to figure when the next frame should be.
*/
if (priv->freeze_count == 0)
{
priv->min_next_frame_time = compute_min_next_frame_time (clock_idle,
priv->frame_time);
maybe_start_idle (clock_idle);
}
if (priv->freeze_count == 0)
priv->sleep_serial = get_sleep_serial ();
return FALSE;
}
