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animation: Add _gtk_style_animation_is_static()

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This will be useful to not trigger updates all the time when nothing is
happening (ie due to animations being paused or due to them having
reached their final value).
This commit is contained in:
Benjamin Otte 2012-09-12 15:27:59 +02:00
parent 229b6fe17a
commit 7224f897d6
4 changed files with 58 additions and 0 deletions
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13
gtk/gtkcssanimation.c
View File

@ -143,6 +143,18 @@ gtk_css_animation_is_finished (GtkStyleAnimation *style_animation,
return FALSE;
}
static gboolean
gtk_css_animation_is_static (GtkStyleAnimation *style_animation,
gint64 at_time_us)
{
GtkCssAnimation *animation = GTK_CSS_ANIMATION (style_animation);
double iteration;
iteration = gtk_css_animation_get_iteration (animation, at_time_us);
return iteration >= animation->iteration_count;
}
static void
gtk_css_animation_finalize (GObject *object)
{
@ -165,6 +177,7 @@ _gtk_css_animation_class_init (GtkCssAnimationClass *klass)
animation_class->set_values = gtk_css_animation_set_values;
animation_class->is_finished = gtk_css_animation_is_finished;
animation_class->is_static = gtk_css_animation_is_static;
}
static void

10
gtk/gtkcsstransition.c
View File

@ -68,6 +68,15 @@ gtk_css_transition_is_finished (GtkStyleAnimation *animation,
return at_time_us >= transition->end_time;
}
static gboolean
gtk_css_transition_is_static (GtkStyleAnimation *animation,
gint64 at_time_us)
{
GtkCssTransition *transition = GTK_CSS_TRANSITION (animation);
return at_time_us >= transition->end_time;
}
static void
gtk_css_transition_finalize (GObject *object)
{
@ -90,6 +99,7 @@ _gtk_css_transition_class_init (GtkCssTransitionClass *klass)
animation_class->set_values = gtk_css_transition_set_values;
animation_class->is_finished = gtk_css_transition_is_finished;
animation_class->is_static = gtk_css_transition_is_static;
}
static void

31
gtk/gtkstyleanimation.c
View File

@ -39,11 +39,19 @@ gtk_style_animation_real_is_finished (GtkStyleAnimation *animation,
return TRUE;
}
static gboolean
gtk_style_animation_real_is_static (GtkStyleAnimation *animation,
gint64 at_time_us)
{
return FALSE;
}
static void
_gtk_style_animation_class_init (GtkStyleAnimationClass *klass)
{
klass->set_values = gtk_style_animation_real_set_values;
klass->is_finished = gtk_style_animation_real_is_finished;
klass->is_static = gtk_style_animation_real_is_static;
}
static void
@ -80,3 +88,26 @@ _gtk_style_animation_is_finished (GtkStyleAnimation *animation,
return klass->is_finished (animation, at_time_us);
}
/**
* _gtk_style_animation_is_static:
* @animation: The animation to query
* @at_time_us: The timestamp to query for
*
* Checks if @animation will not change its values anymore after
* @at_time_us. This happens for example when the animation has reached its
* final value or when it has been paused.
*
* Returns: %TRUE if @animation will not change anymore after @at_time_us
**/
gboolean
_gtk_style_animation_is_static (GtkStyleAnimation *animation,
gint64 at_time_us)
{
GtkStyleAnimationClass *klass;
g_return_val_if_fail (GTK_IS_STYLE_ANIMATION (animation), TRUE);
klass = GTK_STYLE_ANIMATION_GET_CLASS (animation);
return klass->is_static (animation, at_time_us);
}

4
gtk/gtkstyleanimationprivate.h
View File

@ -46,6 +46,8 @@ struct _GtkStyleAnimationClass
gboolean (* is_finished) (GtkStyleAnimation *animation,
gint64 at_time_us);
gboolean (* is_static) (GtkStyleAnimation *animation,
gint64 at_time_us);
GtkBitmask * (* set_values) (GtkStyleAnimation *animation,
GtkBitmask *changed,
gint64 for_time_us,
@ -60,6 +62,8 @@ GtkBitmask * _gtk_style_animation_set_values (GtkStyleAnimation
GtkCssComputedValues *values) G_GNUC_WARN_UNUSED_RESULT;
gboolean _gtk_style_animation_is_finished (GtkStyleAnimation *animation,
gint64 at_time_us);
gboolean _gtk_style_animation_is_static (GtkStyleAnimation *animation,
gint64 at_time_us);
G_END_DECLS