forked from AuroraMiddleware/gtk
43c212ac28
This patch makes that work using 1 of 2 options: 1. Add all missing enums to the switch statement or 2. Cast the switch argument to a uint to avoid having to do that (mostly for GdkEventType). I even found a bug while doing that: clearing a GtkImage with a surface did not notify thae surface property. The reason for enabling this flag even though it is tedious at times is that it is very useful when adding values to an enum, because it makes GTK immediately warn about all the switch statements where this enum is relevant. And I expect changes to enums to be frequent during the GTK4 development cycle.
599 lines
18 KiB
C
599 lines
18 KiB
C
/* GDK - The GIMP Drawing Kit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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* Modified by the GTK+ Team and others 1997-2010. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#include "config.h"
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#include "gdkinternals.h"
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#include "gdkframeclockprivate.h"
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#include "gdkframeclockidle.h"
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#include "gdk.h"
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#ifdef G_OS_WIN32
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#include <windows.h>
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#endif
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#define FRAME_INTERVAL 16667 /* microseconds */
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struct _GdkFrameClockIdlePrivate
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{
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GTimer *timer;
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/* timer_base is used to avoid ever going backward */
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gint64 timer_base;
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gint64 frame_time;
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gint64 min_next_frame_time;
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gint64 sleep_serial;
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guint flush_idle_id;
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guint paint_idle_id;
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guint freeze_count;
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guint updating_count;
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GdkFrameClockPhase requested;
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GdkFrameClockPhase phase;
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guint in_paint_idle : 1;
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#ifdef G_OS_WIN32
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guint begin_period : 1;
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#endif
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};
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static gboolean gdk_frame_clock_flush_idle (void *data);
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static gboolean gdk_frame_clock_paint_idle (void *data);
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G_DEFINE_TYPE_WITH_PRIVATE (GdkFrameClockIdle, gdk_frame_clock_idle, GDK_TYPE_FRAME_CLOCK)
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static gint64 sleep_serial;
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static gint64 sleep_source_prepare_time;
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static GSource *sleep_source;
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static gboolean
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sleep_source_prepare (GSource *source,
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gint *timeout)
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{
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sleep_source_prepare_time = g_source_get_time (source);
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*timeout = -1;
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return FALSE;
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}
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static gboolean
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sleep_source_check (GSource *source)
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{
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if (g_source_get_time (source) != sleep_source_prepare_time)
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sleep_serial++;
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return FALSE;
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}
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static gboolean
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sleep_source_dispatch (GSource *source,
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GSourceFunc callback,
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gpointer user_data)
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{
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return TRUE;
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}
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static GSourceFuncs sleep_source_funcs = {
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sleep_source_prepare,
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sleep_source_check,
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sleep_source_dispatch,
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NULL /* finalize */
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};
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static gint64
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get_sleep_serial (void)
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{
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if (sleep_source == NULL)
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{
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sleep_source = g_source_new (&sleep_source_funcs, sizeof (GSource));
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g_source_set_priority (sleep_source, G_PRIORITY_HIGH);
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g_source_attach (sleep_source, NULL);
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g_source_unref (sleep_source);
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}
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return sleep_serial;
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}
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static void
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gdk_frame_clock_idle_init (GdkFrameClockIdle *frame_clock_idle)
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{
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GdkFrameClockIdlePrivate *priv;
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frame_clock_idle->priv = priv =
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gdk_frame_clock_idle_get_instance_private (frame_clock_idle);
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priv->freeze_count = 0;
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}
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static void
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gdk_frame_clock_idle_dispose (GObject *object)
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{
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GdkFrameClockIdlePrivate *priv = GDK_FRAME_CLOCK_IDLE (object)->priv;
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if (priv->flush_idle_id != 0)
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{
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g_source_remove (priv->flush_idle_id);
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priv->flush_idle_id = 0;
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}
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if (priv->paint_idle_id != 0)
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{
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g_source_remove (priv->paint_idle_id);
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priv->paint_idle_id = 0;
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}
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#ifdef G_OS_WIN32
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if (priv->begin_period)
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{
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timeEndPeriod(1);
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priv->begin_period = FALSE;
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}
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#endif
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G_OBJECT_CLASS (gdk_frame_clock_idle_parent_class)->dispose (object);
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}
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static gint64
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compute_frame_time (GdkFrameClockIdle *idle)
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{
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GdkFrameClockIdlePrivate *priv = idle->priv;
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gint64 computed_frame_time;
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gint64 elapsed;
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elapsed = g_get_monotonic_time () + priv->timer_base;
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if (elapsed < priv->frame_time)
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{
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/* clock went backward. adapt to that by forevermore increasing
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* timer_base. For now, assume we've gone forward in time 1ms.
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*/
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/* hmm. just fix GTimer? */
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computed_frame_time = priv->frame_time + 1;
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priv->timer_base += (priv->frame_time - elapsed) + 1;
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}
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else
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{
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computed_frame_time = elapsed;
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}
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return computed_frame_time;
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}
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static gint64
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gdk_frame_clock_idle_get_frame_time (GdkFrameClock *clock)
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{
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GdkFrameClockIdlePrivate *priv = GDK_FRAME_CLOCK_IDLE (clock)->priv;
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gint64 computed_frame_time;
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/* can't change frame time during a paint */
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if (priv->phase != GDK_FRAME_CLOCK_PHASE_NONE &&
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priv->phase != GDK_FRAME_CLOCK_PHASE_FLUSH_EVENTS)
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return priv->frame_time;
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/* Outside a paint, pick something close to "now" */
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computed_frame_time = compute_frame_time (GDK_FRAME_CLOCK_IDLE (clock));
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/* 16ms is 60fps. We only update frame time that often because we'd
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* like to try to keep animations on the same start times.
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* get_frame_time() would normally be used outside of a paint to
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* record an animation start time for example.
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*/
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if ((computed_frame_time - priv->frame_time) > FRAME_INTERVAL)
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priv->frame_time = computed_frame_time;
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return priv->frame_time;
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}
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#define RUN_FLUSH_IDLE(priv) \
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((priv)->freeze_count == 0 && \
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((priv)->requested & GDK_FRAME_CLOCK_PHASE_FLUSH_EVENTS) != 0)
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/* The reason why we track updating_count separately here and don't
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* just add GDK_FRAME_CLOCK_PHASE_UPDATE into ->request on every frame
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* is so that we can avoid doing one more frame when an animation
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* is cancelled.
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*/
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#define RUN_PAINT_IDLE(priv) \
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((priv)->freeze_count == 0 && \
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(((priv)->requested & ~GDK_FRAME_CLOCK_PHASE_FLUSH_EVENTS) != 0 || \
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(priv)->updating_count > 0))
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static void
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maybe_start_idle (GdkFrameClockIdle *clock_idle)
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{
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GdkFrameClockIdlePrivate *priv = clock_idle->priv;
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if (RUN_FLUSH_IDLE (priv) || RUN_PAINT_IDLE (priv))
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{
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guint min_interval = 0;
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if (priv->min_next_frame_time != 0)
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{
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gint64 now = compute_frame_time (clock_idle);
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gint64 min_interval_us = MAX (priv->min_next_frame_time, now) - now;
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min_interval = (min_interval_us + 500) / 1000;
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}
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if (priv->flush_idle_id == 0 && RUN_FLUSH_IDLE (priv))
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{
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priv->flush_idle_id = gdk_threads_add_timeout_full (GDK_PRIORITY_EVENTS + 1,
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min_interval,
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gdk_frame_clock_flush_idle,
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g_object_ref (clock_idle),
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(GDestroyNotify) g_object_unref);
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g_source_set_name_by_id (priv->flush_idle_id, "[gtk+] gdk_frame_clock_flush_idle");
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}
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if (!priv->in_paint_idle &&
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priv->paint_idle_id == 0 && RUN_PAINT_IDLE (priv))
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{
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priv->paint_idle_id = gdk_threads_add_timeout_full (GDK_PRIORITY_REDRAW,
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min_interval,
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gdk_frame_clock_paint_idle,
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g_object_ref (clock_idle),
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(GDestroyNotify) g_object_unref);
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g_source_set_name_by_id (priv->paint_idle_id, "[gtk+] gdk_frame_clock_paint_idle");
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}
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}
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}
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static void
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maybe_stop_idle (GdkFrameClockIdle *clock_idle)
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{
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GdkFrameClockIdlePrivate *priv = clock_idle->priv;
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if (priv->flush_idle_id != 0 && !RUN_FLUSH_IDLE (priv))
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{
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g_source_remove (priv->flush_idle_id);
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priv->flush_idle_id = 0;
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}
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if (priv->paint_idle_id != 0 && !RUN_PAINT_IDLE (priv))
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{
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g_source_remove (priv->paint_idle_id);
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priv->paint_idle_id = 0;
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}
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}
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static gint64
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compute_min_next_frame_time (GdkFrameClockIdle *clock_idle,
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gint64 last_frame_time)
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{
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gint64 presentation_time;
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gint64 refresh_interval;
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gdk_frame_clock_get_refresh_info (GDK_FRAME_CLOCK (clock_idle),
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last_frame_time,
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&refresh_interval, &presentation_time);
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if (presentation_time == 0)
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return last_frame_time + refresh_interval;
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else
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return presentation_time + refresh_interval / 2;
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}
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static gboolean
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gdk_frame_clock_flush_idle (void *data)
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{
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GdkFrameClock *clock = GDK_FRAME_CLOCK (data);
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GdkFrameClockIdle *clock_idle = GDK_FRAME_CLOCK_IDLE (clock);
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GdkFrameClockIdlePrivate *priv = clock_idle->priv;
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priv->flush_idle_id = 0;
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if (priv->phase != GDK_FRAME_CLOCK_PHASE_NONE)
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return FALSE;
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priv->phase = GDK_FRAME_CLOCK_PHASE_FLUSH_EVENTS;
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priv->requested &= ~GDK_FRAME_CLOCK_PHASE_FLUSH_EVENTS;
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_gdk_frame_clock_emit_flush_events (clock);
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if ((priv->requested & ~GDK_FRAME_CLOCK_PHASE_FLUSH_EVENTS) != 0 ||
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priv->updating_count > 0)
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priv->phase = GDK_FRAME_CLOCK_PHASE_BEFORE_PAINT;
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else
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priv->phase = GDK_FRAME_CLOCK_PHASE_NONE;
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return FALSE;
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}
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static gboolean
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gdk_frame_clock_paint_idle (void *data)
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{
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GdkFrameClock *clock = GDK_FRAME_CLOCK (data);
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GdkFrameClockIdle *clock_idle = GDK_FRAME_CLOCK_IDLE (clock);
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GdkFrameClockIdlePrivate *priv = clock_idle->priv;
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gboolean skip_to_resume_events;
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GdkFrameTimings *timings = NULL;
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priv->paint_idle_id = 0;
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priv->in_paint_idle = TRUE;
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priv->min_next_frame_time = 0;
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skip_to_resume_events =
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(priv->requested & ~(GDK_FRAME_CLOCK_PHASE_FLUSH_EVENTS | GDK_FRAME_CLOCK_PHASE_RESUME_EVENTS)) == 0 &&
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priv->updating_count == 0;
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if (priv->phase > GDK_FRAME_CLOCK_PHASE_BEFORE_PAINT)
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{
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timings = gdk_frame_clock_get_current_timings (clock);
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}
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if (!skip_to_resume_events)
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{
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switch (priv->phase)
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{
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case GDK_FRAME_CLOCK_PHASE_FLUSH_EVENTS:
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break;
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case GDK_FRAME_CLOCK_PHASE_NONE:
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case GDK_FRAME_CLOCK_PHASE_BEFORE_PAINT:
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if (priv->freeze_count == 0)
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{
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priv->frame_time = compute_frame_time (clock_idle);
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_gdk_frame_clock_begin_frame (clock);
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timings = gdk_frame_clock_get_current_timings (clock);
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timings->frame_time = priv->frame_time;
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timings->slept_before = priv->sleep_serial != get_sleep_serial ();
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priv->phase = GDK_FRAME_CLOCK_PHASE_BEFORE_PAINT;
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/* We always emit ::before-paint and ::after-paint if
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* any of the intermediate phases are requested and
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* they don't get repeated if you freeze/thaw while
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* in them.
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*/
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priv->requested &= ~GDK_FRAME_CLOCK_PHASE_BEFORE_PAINT;
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_gdk_frame_clock_emit_before_paint (clock);
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priv->phase = GDK_FRAME_CLOCK_PHASE_UPDATE;
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}
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/* fallthrough */
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case GDK_FRAME_CLOCK_PHASE_UPDATE:
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if (priv->freeze_count == 0)
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{
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if ((priv->requested & GDK_FRAME_CLOCK_PHASE_UPDATE) != 0 ||
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priv->updating_count > 0)
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{
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priv->requested &= ~GDK_FRAME_CLOCK_PHASE_UPDATE;
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_gdk_frame_clock_emit_update (clock);
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}
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}
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/* fallthrough */
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case GDK_FRAME_CLOCK_PHASE_LAYOUT:
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if (priv->freeze_count == 0)
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{
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int iter;
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#ifdef G_ENABLE_DEBUG
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if (GDK_DEBUG_CHECK (FRAMES))
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{
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if (priv->phase != GDK_FRAME_CLOCK_PHASE_LAYOUT &&
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(priv->requested & GDK_FRAME_CLOCK_PHASE_LAYOUT))
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timings->layout_start_time = g_get_monotonic_time ();
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}
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#endif /* G_ENABLE_DEBUG */
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priv->phase = GDK_FRAME_CLOCK_PHASE_LAYOUT;
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/* We loop in the layout phase, because we don't want to progress
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* into the paint phase with invalid size allocations. This may
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* happen in some situation like races between user window
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* resizes and natural size changes.
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*/
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iter = 0;
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while ((priv->requested & GDK_FRAME_CLOCK_PHASE_LAYOUT) &&
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priv->freeze_count == 0 && iter++ < 4)
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{
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priv->requested &= ~GDK_FRAME_CLOCK_PHASE_LAYOUT;
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_gdk_frame_clock_emit_layout (clock);
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}
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if (iter == 5)
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g_warning ("gdk-frame-clock: layout continuously requested, giving up after 4 tries");
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}
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/* fallthrough */
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case GDK_FRAME_CLOCK_PHASE_PAINT:
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if (priv->freeze_count == 0)
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{
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#ifdef G_ENABLE_DEBUG
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if (GDK_DEBUG_CHECK (FRAMES))
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{
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if (priv->phase != GDK_FRAME_CLOCK_PHASE_PAINT &&
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(priv->requested & GDK_FRAME_CLOCK_PHASE_PAINT))
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timings->paint_start_time = g_get_monotonic_time ();
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}
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#endif /* G_ENABLE_DEBUG */
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priv->phase = GDK_FRAME_CLOCK_PHASE_PAINT;
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if (priv->requested & GDK_FRAME_CLOCK_PHASE_PAINT)
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{
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priv->requested &= ~GDK_FRAME_CLOCK_PHASE_PAINT;
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_gdk_frame_clock_emit_paint (clock);
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}
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}
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/* fallthrough */
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case GDK_FRAME_CLOCK_PHASE_AFTER_PAINT:
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if (priv->freeze_count == 0)
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{
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priv->requested &= ~GDK_FRAME_CLOCK_PHASE_AFTER_PAINT;
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_gdk_frame_clock_emit_after_paint (clock);
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/* the ::after-paint phase doesn't get repeated on freeze/thaw,
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*/
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priv->phase = GDK_FRAME_CLOCK_PHASE_NONE;
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#ifdef G_ENABLE_DEBUG
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if (GDK_DEBUG_CHECK (FRAMES))
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timings->frame_end_time = g_get_monotonic_time ();
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#endif /* G_ENABLE_DEBUG */
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}
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/* fallthrough */
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case GDK_FRAME_CLOCK_PHASE_RESUME_EVENTS:
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default:
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;
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}
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}
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#ifdef G_ENABLE_DEBUG
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if (GDK_DEBUG_CHECK (FRAMES))
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{
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if (timings && timings->complete)
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_gdk_frame_clock_debug_print_timings (clock, timings);
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}
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#endif /* G_ENABLE_DEBUG */
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if (priv->requested & GDK_FRAME_CLOCK_PHASE_RESUME_EVENTS)
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{
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priv->requested &= ~GDK_FRAME_CLOCK_PHASE_RESUME_EVENTS;
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_gdk_frame_clock_emit_resume_events (clock);
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}
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if (priv->freeze_count == 0)
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priv->phase = GDK_FRAME_CLOCK_PHASE_NONE;
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priv->in_paint_idle = FALSE;
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/* If there is throttling in the backend layer, then we'll do another
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* update as soon as the backend unthrottles (if there is work to do),
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* otherwise we need to figure when the next frame should be.
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*/
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if (priv->freeze_count == 0)
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{
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priv->min_next_frame_time = compute_min_next_frame_time (clock_idle,
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priv->frame_time);
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maybe_start_idle (clock_idle);
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}
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if (priv->freeze_count == 0)
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priv->sleep_serial = get_sleep_serial ();
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return FALSE;
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}
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static void
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gdk_frame_clock_idle_request_phase (GdkFrameClock *clock,
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GdkFrameClockPhase phase)
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|
{
|
|
GdkFrameClockIdle *clock_idle = GDK_FRAME_CLOCK_IDLE (clock);
|
|
GdkFrameClockIdlePrivate *priv = clock_idle->priv;
|
|
|
|
priv->requested |= phase;
|
|
maybe_start_idle (clock_idle);
|
|
}
|
|
|
|
static void
|
|
gdk_frame_clock_idle_begin_updating (GdkFrameClock *clock)
|
|
{
|
|
GdkFrameClockIdle *clock_idle = GDK_FRAME_CLOCK_IDLE (clock);
|
|
GdkFrameClockIdlePrivate *priv = clock_idle->priv;
|
|
|
|
#ifdef G_OS_WIN32
|
|
/* We need a higher resolution timer while doing animations */
|
|
if (priv->updating_count == 0 && !priv->begin_period)
|
|
{
|
|
timeBeginPeriod(1);
|
|
priv->begin_period = TRUE;
|
|
}
|
|
#endif
|
|
|
|
priv->updating_count++;
|
|
maybe_start_idle (clock_idle);
|
|
}
|
|
|
|
static void
|
|
gdk_frame_clock_idle_end_updating (GdkFrameClock *clock)
|
|
{
|
|
GdkFrameClockIdle *clock_idle = GDK_FRAME_CLOCK_IDLE (clock);
|
|
GdkFrameClockIdlePrivate *priv = clock_idle->priv;
|
|
|
|
g_return_if_fail (priv->updating_count > 0);
|
|
|
|
priv->updating_count--;
|
|
maybe_stop_idle (clock_idle);
|
|
|
|
#ifdef G_OS_WIN32
|
|
if (priv->updating_count == 0 && priv->begin_period)
|
|
{
|
|
timeEndPeriod(1);
|
|
priv->begin_period = FALSE;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
static void
|
|
gdk_frame_clock_idle_freeze (GdkFrameClock *clock)
|
|
{
|
|
GdkFrameClockIdle *clock_idle = GDK_FRAME_CLOCK_IDLE (clock);
|
|
GdkFrameClockIdlePrivate *priv = clock_idle->priv;
|
|
|
|
priv->freeze_count++;
|
|
maybe_stop_idle (clock_idle);
|
|
}
|
|
|
|
static void
|
|
gdk_frame_clock_idle_thaw (GdkFrameClock *clock)
|
|
{
|
|
GdkFrameClockIdle *clock_idle = GDK_FRAME_CLOCK_IDLE (clock);
|
|
GdkFrameClockIdlePrivate *priv = clock_idle->priv;
|
|
|
|
g_return_if_fail (priv->freeze_count > 0);
|
|
|
|
priv->freeze_count--;
|
|
if (priv->freeze_count == 0)
|
|
{
|
|
maybe_start_idle (clock_idle);
|
|
/* If nothing is requested so we didn't start an idle, we need
|
|
* to skip to the end of the state chain, since the idle won't
|
|
* run and do it for us.
|
|
*/
|
|
if (priv->paint_idle_id == 0)
|
|
priv->phase = GDK_FRAME_CLOCK_PHASE_NONE;
|
|
|
|
priv->sleep_serial = get_sleep_serial ();
|
|
}
|
|
}
|
|
|
|
static void
|
|
gdk_frame_clock_idle_class_init (GdkFrameClockIdleClass *klass)
|
|
{
|
|
GObjectClass *gobject_class = (GObjectClass*) klass;
|
|
GdkFrameClockClass *frame_clock_class = (GdkFrameClockClass *)klass;
|
|
|
|
gobject_class->dispose = gdk_frame_clock_idle_dispose;
|
|
|
|
frame_clock_class->get_frame_time = gdk_frame_clock_idle_get_frame_time;
|
|
frame_clock_class->request_phase = gdk_frame_clock_idle_request_phase;
|
|
frame_clock_class->begin_updating = gdk_frame_clock_idle_begin_updating;
|
|
frame_clock_class->end_updating = gdk_frame_clock_idle_end_updating;
|
|
frame_clock_class->freeze = gdk_frame_clock_idle_freeze;
|
|
frame_clock_class->thaw = gdk_frame_clock_idle_thaw;
|
|
}
|
|
|
|
GdkFrameClock *
|
|
_gdk_frame_clock_idle_new (void)
|
|
{
|
|
GdkFrameClockIdle *clock;
|
|
|
|
clock = g_object_new (GDK_TYPE_FRAME_CLOCK_IDLE, NULL);
|
|
|
|
return GDK_FRAME_CLOCK (clock);
|
|
}
|