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gtk2/gdk/gdkframeclockprivate.h

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Change GdkFrameClock from an interface to a class It's unlikely that anyone will want to have, say, a GtkWidget that also acts as a GdkFrameClock, so an abstract base class is as flexible as making GdkFrameClock an interface, but has advantages: - If we decide to never make implementing your own frame clock possible, we can remove the virtualization. - We can put functionality like history into the base class. - Avoids the oddity of a interface without a public interface VTable, which may cause problems for language bindings.
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/* GDK - The GIMP Drawing Kit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the GTK+ Team and others 1997-2010. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
/* Uninstalled header, internal to GDK */
#ifndef __GDK_FRAME_CLOCK_PRIVATE_H__
#define __GDK_FRAME_CLOCK_PRIVATE_H__
#include <gdk/gdkframeclock.h>
G_BEGIN_DECLS
struct _GdkFrameClock
{
GObject parent_instance;
/*< private >*/
GdkFrameClockPrivate *priv;
};
struct _GdkFrameClockClass
{
GObjectClass parent_class;
gdk_frame_clock_get_frame_time(): use gint64 for time
2013-02-13 13:35:05 +00:00
gint64 (* get_frame_time) (GdkFrameClock *clock);
Change GdkFrameClock from an interface to a class It's unlikely that anyone will want to have, say, a GtkWidget that also acts as a GdkFrameClock, so an abstract base class is as flexible as making GdkFrameClock an interface, but has advantages: - If we decide to never make implementing your own frame clock possible, we can remove the virtualization. - We can put functionality like history into the base class. - Avoids the oddity of a interface without a public interface VTable, which may cause problems for language bindings.
2013-02-12 20:02:21 +00:00
GdkFrameClock: Clean up the public API * remove gdk_frame_clock_get_frame_time_val(); a convenience function that would rarely be used. * remove gdk_frame_clock_get_requested() and ::frame-requested signal; while we might want to eventually be able to track the requested phases for a clock, we don't have a current use case. * Make gdk_frame_clock_freeze/thaw() private: they are only used within GTK+ and have complex semantics. * Remove gdk_frame_clock_get_last_complete(). Another convenience function that I don't have a current use case for. * Rename: gdk_frame_clock_get_start() => gdk_frame_clock_get_history_start() gdk_frame_clocK_get_current_frame_timings() => gdk_frame_clock_get_timings()
2013-02-12 20:03:21 +00:00
void (* request_phase) (GdkFrameClock *clock,
GdkFrameClockPhase phase);
Add gdk_frame_clock_begin/end_updating() Add an API to start or stop continually updating the frame clock. This is a slight convenience for applcations and avoids the problem of getting one more frame run after an animation stops, but the primary motivation for this is because it looks like we might have to use timeBeginPeriod()/timeEndPeriod() on Windows to get reasonably accurate timing, and for that we'll need to know if there is an animation running. https://bugzilla.gnome.org/show_bug.cgi?id=693934
2013-02-15 22:04:39 +00:00
void (* begin_updating) (GdkFrameClock *clock);
void (* end_updating) (GdkFrameClock *clock);
Change GdkFrameClock from an interface to a class It's unlikely that anyone will want to have, say, a GtkWidget that also acts as a GdkFrameClock, so an abstract base class is as flexible as making GdkFrameClock an interface, but has advantages: - If we decide to never make implementing your own frame clock possible, we can remove the virtualization. - We can put functionality like history into the base class. - Avoids the oddity of a interface without a public interface VTable, which may cause problems for language bindings.
2013-02-12 20:02:21 +00:00
GdkFrameClock: Clean up the public API * remove gdk_frame_clock_get_frame_time_val(); a convenience function that would rarely be used. * remove gdk_frame_clock_get_requested() and ::frame-requested signal; while we might want to eventually be able to track the requested phases for a clock, we don't have a current use case. * Make gdk_frame_clock_freeze/thaw() private: they are only used within GTK+ and have complex semantics. * Remove gdk_frame_clock_get_last_complete(). Another convenience function that I don't have a current use case for. * Rename: gdk_frame_clock_get_start() => gdk_frame_clock_get_history_start() gdk_frame_clocK_get_current_frame_timings() => gdk_frame_clock_get_timings()
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void (* freeze) (GdkFrameClock *clock);
void (* thaw) (GdkFrameClock *clock);
Change GdkFrameClock from an interface to a class It's unlikely that anyone will want to have, say, a GtkWidget that also acts as a GdkFrameClock, so an abstract base class is as flexible as making GdkFrameClock an interface, but has advantages: - If we decide to never make implementing your own frame clock possible, we can remove the virtualization. - We can put functionality like history into the base class. - Avoids the oddity of a interface without a public interface VTable, which may cause problems for language bindings.
2013-02-12 20:02:21 +00:00
/* signals */
/* void (* flush_events) (GdkFrameClock *clock); */
/* void (* before_paint) (GdkFrameClock *clock); */
/* void (* update) (GdkFrameClock *clock); */
/* void (* layout) (GdkFrameClock *clock); */
/* void (* paint) (GdkFrameClock *clock); */
/* void (* after_paint) (GdkFrameClock *clock); */
/* void (* resume_events) (GdkFrameClock *clock); */
};
GdkFrameTimings: strip down to a minimal public API Since we're not exporting the ability to create your own frame clock for now, remove the setters for GdkFrameTimings fields. Also remove all setters and getters for fields that are more about implementation than about quantities that are meaningful to the applcation and just access the fields directly within GDK.
2013-02-12 21:14:24 +00:00
struct _GdkFrameTimings
{
guint ref_count;
gint64 frame_counter;
guint64 cookie;
gint64 frame_time;
gint64 drawn_time;
gint64 presentation_time;
gint64 refresh_interval;
gint64 predicted_presentation_time;
#ifdef G_ENABLE_DEBUG
gint64 layout_start_time;
gint64 paint_start_time;
gint64 frame_end_time;
#endif /* G_ENABLE_DEBUG */
guint complete : 1;
guint slept_before : 1;
};
GdkFrameClock: Clean up the public API * remove gdk_frame_clock_get_frame_time_val(); a convenience function that would rarely be used. * remove gdk_frame_clock_get_requested() and ::frame-requested signal; while we might want to eventually be able to track the requested phases for a clock, we don't have a current use case. * Make gdk_frame_clock_freeze/thaw() private: they are only used within GTK+ and have complex semantics. * Remove gdk_frame_clock_get_last_complete(). Another convenience function that I don't have a current use case for. * Rename: gdk_frame_clock_get_start() => gdk_frame_clock_get_history_start() gdk_frame_clocK_get_current_frame_timings() => gdk_frame_clock_get_timings()
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void _gdk_frame_clock_freeze (GdkFrameClock *clock);
void _gdk_frame_clock_thaw (GdkFrameClock *clock);
Merge GdkFrameHistory into GdkFrameClock Now that GdkFrameClock is a class, not interface, there's no real advantage to splitting the frame history into an aggregate object, so directly merge it into GdkFrameClock.
2013-02-12 20:47:38 +00:00
void _gdk_frame_clock_begin_frame (GdkFrameClock *clock);
void _gdk_frame_clock_debug_print_timings (GdkFrameClock *clock,
GdkFrameTimings *timings);
GdkFrameTimings: strip down to a minimal public API Since we're not exporting the ability to create your own frame clock for now, remove the setters for GdkFrameTimings fields. Also remove all setters and getters for fields that are more about implementation than about quantities that are meaningful to the applcation and just access the fields directly within GDK.
2013-02-12 21:14:24 +00:00
GdkFrameTimings *_gdk_frame_timings_new (gint64 frame_counter);
Change GdkFrameClock from an interface to a class It's unlikely that anyone will want to have, say, a GtkWidget that also acts as a GdkFrameClock, so an abstract base class is as flexible as making GdkFrameClock an interface, but has advantages: - If we decide to never make implementing your own frame clock possible, we can remove the virtualization. - We can put functionality like history into the base class. - Avoids the oddity of a interface without a public interface VTable, which may cause problems for language bindings.
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G_END_DECLS
#endif /* __GDK_FRAME_CLOCK_PRIVATE_H__ */
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