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2007-11-19 Emmanuele Bassi <ebassi@openedhand.com>

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* clutter.symbols: Update

	* clutter/clutter-actor.h: Rename the angle argument for
	set_rotationx() to avoid gtk-doc complaining

	* clutter/clutter-main.h:
	* clutter/clutter-main.c:
	(clutter_set_motion_events_enabled): Rename for consistency

	(clutter_get_motion_events_frequency),
	(clutter_set_motion_events_frequency): Add accessors for the default
	motion events deliver frequency.
	
	(clutter_do_event): Throttle down motion events delivery using the
	motion events frequency setting, to avoid excessive redraws. (#608)

	(clutter_context_get_default): Enable per-actor motion events, at
	least for now.

	* tests/test-events.c (red_button_cb):
	* tests/test-grab.c (green_press_cb): Update.
This commit is contained in:
Emmanuele Bassi 2007-11-19 16:30:56 +00:00
parent 976df38630
commit b676210545
9 changed files with 199 additions and 32 deletions
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24
ChangeLog
View File

@ -1,3 +1,27 @@
2007-11-19 Emmanuele Bassi <ebassi@openedhand.com>
* clutter.symbols: Update
* clutter/clutter-actor.h: Rename the angle argument for
set_rotationx() to avoid gtk-doc complaining
* clutter/clutter-main.h:
* clutter/clutter-main.c:
(clutter_set_motion_events_enabled): Rename for consistency
(clutter_get_motion_events_frequency),
(clutter_set_motion_events_frequency): Add accessors for the default
motion events deliver frequency.
(clutter_do_event): Throttle down motion events delivery using the
motion events frequency setting, to avoid excessive redraws. (#608)
(clutter_context_get_default): Enable per-actor motion events, at
least for now.
* tests/test-events.c (red_button_cb):
* tests/test-grab.c (green_press_cb): Update.
2007-11-19 Emmanuele Bassi <ebassi@openedhand.com>
* clutter/clutter-timeline.c (timeline_timeout_func): Do not emit the

10
clutter.symbols
View File

@ -354,8 +354,16 @@ clutter_threads_add_idle
clutter_threads_add_idle_full
clutter_threads_add_timeout
clutter_threads_add_timeout_full
clutter_enable_motion_events
clutter_set_motion_events_enabled
clutter_get_motion_events_enabled
clutter_set_motion_events_frequency
clutter_get_motion_events_frequency
clutter_grab_pointer
clutter_ungrab_pointer
clutter_get_pointer_grab
clutter_grab_keyboard
clutter_ungrab_keyboard
clutter_get_keyboard_grab
clutter_media_get_type
clutter_media_get_uri
clutter_media_get_playing

3
clutter/clutter-actor.h
View File

@ -272,7 +272,6 @@ void clutter_actor_set_x (ClutterActor *sel
gint x);
void clutter_actor_set_y (ClutterActor *self,
gint y);
void clutter_actor_set_rotation (ClutterActor *self,
ClutterRotateAxis axis,
gdouble angle,
@ -281,7 +280,7 @@ void clutter_actor_set_rotation (ClutterActor *sel
gint z);
void clutter_actor_set_rotationx (ClutterActor *self,
ClutterRotateAxis axis,
ClutterFixed fixed,
ClutterFixed angle,
gint x,
gint y,
gint z);

149
clutter/clutter-main.c
View File

@ -49,21 +49,21 @@
#include "cogl.h"
/* main context */
static ClutterMainContext *ClutterCntx = NULL;
static ClutterMainContext *ClutterCntx = NULL;
/* main lock and locking/unlocking functions */
static GMutex *clutter_threads_mutex = NULL;
static GCallback clutter_threads_lock = NULL;
static GCallback clutter_threads_unlock = NULL;
static gboolean clutter_is_initialized = FALSE;
static gboolean clutter_show_fps = FALSE;
static gboolean clutter_fatal_warnings = FALSE;
static gboolean clutter_is_initialized = FALSE;
static gboolean clutter_show_fps = FALSE;
static gboolean clutter_fatal_warnings = FALSE;
static gint clutter_default_fps = 60;
static guint clutter_default_fps = 60;
static guint clutter_main_loop_level = 0;
static GSList *main_loops = NULL;
static guint clutter_main_loop_level = 0;
static GSList *main_loops = NULL;
guint clutter_debug_flags = 0; /* global clutter debug flag */
@ -175,18 +175,44 @@ clutter_redraw (void)
CLUTTER_TIMESTAMP (SCHEDULER, "Redraw finish");
}
/**
* clutter_set_motion_events_enabled:
* @enable: %TRUE to enable per-actor motion events
*
* Sets whether per-actor motion events should be enabled or not (the
* default is to enable them).
*
* If @enable is %FALSE the following events will not work:
* <itemizedlist>
* <listitem><para>ClutterActor::motion-event, unless on the
* #ClutterStage</para></listitem>
* <listitem><para>ClutterActor::enter-event</para></listitem>
* <listitem><para>ClutterActor::leave-event</para></listitem>
* </itemizedlist>
*
* Since: 0.6
*/
void
clutter_enable_motion_events (gboolean enable)
clutter_set_motion_events_enabled (gboolean enable)
{
ClutterMainContext *context = clutter_context_get_default ();
ClutterMainContext *context = clutter_context_get_default ();
context->motion_events_per_actor = enable;
}
/**
* clutter_get_motion_events_enabled:
*
* Gets whether the per-actor motion events are enabled.
*
* Return value: %TRUE if the motion events are enabled
*
* Since: 0.6
*/
gboolean
clutter_get_motion_events_enabled (void)
{
ClutterMainContext *context = clutter_context_get_default ();
ClutterMainContext *context = clutter_context_get_default ();
return context->motion_events_per_actor;
}
@ -668,10 +694,13 @@ clutter_context_get_default (void)
ctx->backend = g_object_new (_clutter_backend_impl_get_type (), NULL);
ctx->is_initialized = FALSE;
ctx->motion_events_per_actor = TRUE;
#ifdef CLUTTER_ENABLE_DEBUG
ctx->timer = g_timer_new ();
g_timer_start (ctx->timer);
#endif
ClutterCntx = ctx;
}
@ -1297,6 +1326,7 @@ clutter_do_event (ClutterEvent *event)
ClutterMainContext *context;
ClutterBackend *backend;
ClutterActor *stage;
static gint32 motion_last_time = 0L;
context = clutter_context_get_default ();
backend = context->backend;
@ -1340,7 +1370,29 @@ clutter_do_event (ClutterEvent *event)
break;
case CLUTTER_MOTION:
if (context->motion_events_per_actor == FALSE)
{
gint32 frame_rate, delta;
/* avoid issuing too many motion events, which leads to many redraws
* in pick mode (performance penalty)
*/
frame_rate = clutter_get_motion_events_frequency ();
delta = 1000 / frame_rate;
CLUTTER_NOTE (EVENT,
"skip motion event: %s (last:%d, delta:%d, time:%d)",
(event->any.time < (motion_last_time + delta) ? "yes" : "no"),
motion_last_time,
delta,
event->any.time);
if (event->any.time < (motion_last_time + delta))
break;
else
motion_last_time = event->any.time;
}
if (!context->motion_events_per_actor)
{
/* Only stage gets motion events */
event->any.source = stage;
@ -1473,6 +1525,19 @@ clutter_base_init (void)
}
}
/**
* clutter_get_default_frame_rate:
*
* Retrieves the default frame rate used when creating #ClutterTimeline<!--
* -->s.
*
* This value is also used to compute the default frequency of motion
* events.
*
* Return value: the default frame rate
*
* Since: 0.6
*/
guint
clutter_get_default_frame_rate (void)
{
@ -1483,6 +1548,15 @@ clutter_get_default_frame_rate (void)
return context->frame_rate;
}
/**
* clutter_set_default_frame_rate:
* @frames_per_sec: the new default frame rate
*
* Sets the default frame rate to be used when creating #ClutterTimeline<!--
* -->s
*
* Since: 0.6
*/
void
clutter_set_default_frame_rate (guint frames_per_sec)
{
@ -1663,3 +1737,56 @@ clutter_get_keyboard_grab (void)
return context->keyboard_grab_actor;
}
/**
* clutter_get_motion_events_frequency:
*
* Retrieves the number of motion events per second that are delivered
* to the stage.
*
* See clutter_set_motion_events_frequency().
*
* Return value: the number of motion events per second
*
* Since: 0.6
*/
guint
clutter_get_motion_events_frequency (void)
{
ClutterMainContext *context = clutter_context_get_default ();
if (G_LIKELY (context->motion_frequency == 0))
{
guint frequency;
frequency = clutter_default_fps / 4;
frequency = CLAMP (frequency, 20, 45);
return frequency;
}
else
return context->motion_frequency;
}
/**
* clutter_set_motion_events_frequency:
* @frequency: the number of motion events per second
*
* Sets the motion events frequency. Setting this to a non-zero value
* will override the default setting, so it should be rarely used.
*
* Motion events are delivered from the default backend to the stage
* and are used to generate the enter/leave events pair. This might lead
* to a performance penalty due to the way the actors are identified.
* Using this function is possible to reduce the frequency of the motion
* events delivery to the stage.
*
* Since: 0.6
*/
void
clutter_set_motion_events_frequency (guint frequency)
{
ClutterMainContext *context = clutter_context_get_default ();
context->motion_frequency = frequency;
}

23
clutter/clutter-main.h
View File

@ -100,20 +100,21 @@ guint clutter_threads_add_timeout_full (gint priority,
gpointer data,
GDestroyNotify notify);
void clutter_enable_motion_events (gboolean enable);
gboolean clutter_get_motion_events_enabled (void);
void clutter_set_motion_events_enabled (gboolean enable);
gboolean clutter_get_motion_events_enabled (void);
void clutter_set_motion_events_frequency (guint frequency);
guint clutter_get_motion_events_frequency (void);
guint clutter_get_default_frame_rate (void);
void clutter_set_default_frame_rate (guint frames_per_sec);
void clutter_set_default_frame_rate (guint frames_per_sec);
guint clutter_get_default_frame_rate (void);
void clutter_grab_pointer (ClutterActor *actor);
void clutter_ungrab_pointer (void);
ClutterActor * clutter_get_pointer_grab (void);
void clutter_grab_pointer (ClutterActor *actor);
void clutter_ungrab_pointer (void);
ClutterActor * clutter_get_pointer_grab (void);
void clutter_grab_keyboard (ClutterActor *actor);
void clutter_ungrab_keyboard (void);
ClutterActor * clutter_get_keyboard_grab (void);
void clutter_grab_keyboard (ClutterActor *actor);
void clutter_ungrab_keyboard (void);
ClutterActor * clutter_get_keyboard_grab (void);
G_END_DECLS

5
doc/reference/ChangeLog
View File

@ -1,3 +1,8 @@
2007-11-19 Emmanuele Bassi <ebassi@openedhand.com>
* clutter-sections.txt: Remove clutter_behaviour_bspline_append() and
add the new motion events settings API.
2007-11-18 Emmanuele Bassi <ebassi@openedhand.com>
* Makefile.am: Add clutter-x11.h to the headers scanned.

7
doc/reference/clutter-sections.txt
View File

@ -637,7 +637,6 @@ ClutterBehaviourBsplineClass
clutter_behaviour_bspline_new
clutter_behaviour_bspline_append_knot
clutter_behaviour_bspline_append_knots
clutter_behaviour_bspline_append
clutter_behaviour_bspline_truncate
clutter_behaviour_bspline_join
clutter_behaviour_bspline_split
@ -890,10 +889,12 @@ clutter_get_debug_enabled
clutter_get_show_fps
clutter_get_timestamp
clutter_get_actor_by_gid
clutter_get_default_frame_rate
clutter_set_default_frame_rate
clutter_get_default_frame_rate
clutter_set_motion_events_enabled
clutter_get_motion_events_enabled
clutter_enable_motion_events
clutter_set_motion_events_frequency
clutter_get_motion_events_frequency
<SUBSECTION>
clutter_threads_set_lock_functions

4
tests/test-events.c
View File

@ -1,6 +1,6 @@
#include <clutter/clutter.h>
gboolean IsFullScreen = FALSE, IsMotion = FALSE;
gboolean IsFullScreen = FALSE, IsMotion = TRUE;
static void
stage_state_cb (ClutterStage *stage,
@ -41,7 +41,7 @@ red_button_cb (ClutterActor *actor,
else
IsMotion = TRUE;
clutter_enable_motion_events (IsMotion);
clutter_set_motion_events_enabled (IsMotion);
return FALSE;
}

6
tests/test-grab.c
View File

@ -107,9 +107,11 @@ green_press_cb (ClutterActor *actor,
ClutterEvent *event,
gpointer data)
{
clutter_enable_motion_events (!clutter_get_motion_events_enabled ());
clutter_set_motion_events_enabled (!clutter_get_motion_events_enabled ());
g_print ("per actor motion events are now %s\n",
clutter_get_motion_events_enabled ()?"enabled":"disabled");
clutter_get_motion_events_enabled () ? "enabled" : "disabled");
return FALSE;
}