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clutter/stage: Add 'skipped-paint' signal/vfunc

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This is intended to allow being notified about a stage update happening,
but painting didn't happen. This is possible today by using other
signals and keeping track of painting happened, but it saves us some
state tracking by just being told so.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/4067>
This commit is contained in:
Jonas Ådahl 2024-10-02 14:30:49 +02:00 committed by Marge Bot
parent 127c303254
commit 3806c0bd44
4 changed files with 43 additions and 0 deletions
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3
clutter/clutter/clutter-stage-private.h
View File

@ -59,6 +59,9 @@ void clutter_stage_emit_before_paint (ClutterStage
void clutter_stage_emit_after_paint (ClutterStage *stage,
ClutterStageView *view,
ClutterFrame *frame);
void clutter_stage_emit_skipped_paint (ClutterStage *stage,
ClutterStageView *view,
ClutterFrame *frame);
void clutter_stage_after_update (ClutterStage *stage,
ClutterStageView *view,
ClutterFrame *frame);

4
clutter/clutter/clutter-stage-view.c
View File

@ -1084,6 +1084,10 @@ handle_frame_clock_frame (ClutterFrameClock *frame_clock,
if (clutter_context_get_show_fps (context))
end_frame_timing_measurement (view);
}
else
{
clutter_stage_emit_skipped_paint (stage, view, frame);
}
_clutter_stage_window_finish_frame (stage_window, view, frame);

32
clutter/clutter/clutter-stage.c
View File

@ -165,6 +165,7 @@ enum
PREPARE_FRAME,
BEFORE_PAINT,
AFTER_PAINT,
SKIPPED_PAINT,
AFTER_UPDATE,
PAINT_VIEW,
PRESENTED,
@ -527,6 +528,14 @@ clutter_stage_emit_after_paint (ClutterStage *stage,
g_signal_emit (stage, stage_signals[AFTER_PAINT], 0, view, frame);
}
void
clutter_stage_emit_skipped_paint (ClutterStage *stage,
ClutterStageView *view,
ClutterFrame *frame)
{
g_signal_emit (stage, stage_signals[SKIPPED_PAINT], 0, view, frame);
}
void
clutter_stage_after_update (ClutterStage *stage,
ClutterStageView *view,
@ -1632,6 +1641,29 @@ clutter_stage_class_init (ClutterStageClass *klass)
G_TYPE_FROM_CLASS (gobject_class),
_clutter_marshal_VOID__OBJECT_BOXEDv);
/**
* ClutterStage::skipped-paint:
* @stage: the stage that received the event
* @view: a #ClutterStageView
* @frame: a #ClutterFrame
*
* The ::skipped-paint signal is emitted after relayout, if no damage
* was posted and the paint was skipped.
*/
stage_signals[SKIPPED_PAINT] =
g_signal_new (I_("skipped-paint"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (ClutterStageClass, skipped_paint),
NULL, NULL,
_clutter_marshal_VOID__OBJECT_BOXED,
G_TYPE_NONE, 2,
CLUTTER_TYPE_STAGE_VIEW,
CLUTTER_TYPE_FRAME | G_SIGNAL_TYPE_STATIC_SCOPE);
g_signal_set_va_marshaller (stage_signals[SKIPPED_PAINT],
G_TYPE_FROM_CLASS (gobject_class),
_clutter_marshal_VOID__OBJECT_BOXEDv);
/**
* ClutterStage::after-update:
* @stage: the #ClutterStage

4
clutter/clutter/clutter-stage.h
View File

@ -66,6 +66,10 @@ struct _ClutterStageClass
ClutterStageView *view,
const MtkRegion *redraw_clip,
ClutterFrame *frame);
void (* skipped_paint) (ClutterStage *stage,
ClutterStageView *view,
ClutterFrame *frame);
};
/**