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cssanimation: Implement pausing the animation

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This commit is contained in:
Benjamin Otte 2012-09-17 17:00:02 +02:00
parent d74e1b9ac9
commit 0cecf315fd
3 changed files with 78 additions and 24 deletions
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53
gtk/gtkcssanimation.c
View File

@ -27,18 +27,22 @@
G_DEFINE_TYPE (GtkCssAnimation, _gtk_css_animation, GTK_TYPE_STYLE_ANIMATION)
/* NB: Return value can be negative (if animation hasn't started yet) */
static gint64
gtk_css_animation_get_elapsed (GtkCssAnimation *animation,
gint64 for_time_us)
{
if (animation->play_state == GTK_CSS_PLAY_STATE_PAUSED)
return animation->timestamp;
else
return for_time_us - animation->timestamp;
}
/* NB: Return value can be negative and +-Inf */
static double
gtk_css_animation_get_iteration (GtkCssAnimation *animation,
gint64 for_time_us)
{
gint64 elapsed;
double iterations;
elapsed = for_time_us - animation->timestamp;
iterations = (double) elapsed / animation->duration;
return iterations;
return (double) gtk_css_animation_get_elapsed (animation, for_time_us) / animation->duration;
}
static gboolean
@ -144,6 +148,9 @@ gtk_css_animation_is_static (GtkStyleAnimation *style_animation,
GtkCssAnimation *animation = GTK_CSS_ANIMATION (style_animation);
double iteration;
if (animation->play_state == GTK_CSS_PLAY_STATE_PAUSED)
return TRUE;
iteration = gtk_css_animation_get_iteration (animation, at_time_us);
return iteration >= animation->iteration_count;
@ -182,7 +189,8 @@ _gtk_css_animation_init (GtkCssAnimation *animation)
GtkStyleAnimation *
_gtk_css_animation_new (const char *name,
GtkCssKeyframes *keyframes,
gint64 start_time_us,
gint64 timestamp,
gint64 delay_us,
gint64 duration_us,
GtkCssValue *ease,
GtkCssDirection direction,
@ -201,7 +209,11 @@ _gtk_css_animation_new (const char *name,
animation->name = g_strdup (name);
animation->keyframes = _gtk_css_keyframes_ref (keyframes);
animation->timestamp = start_time_us;
if (play_state == GTK_CSS_PLAY_STATE_PAUSED)
animation->timestamp = - delay_us;
else
animation->timestamp = timestamp + delay_us;
animation->duration = duration_us;
animation->ease = _gtk_css_value_ref (ease);
animation->direction = direction;
@ -219,3 +231,26 @@ _gtk_css_animation_get_name (GtkCssAnimation *animation)
return animation->name;
}
GtkStyleAnimation *
_gtk_css_animation_copy (GtkCssAnimation *animation,
gint64 at_time_us,
GtkCssPlayState play_state)
{
g_return_val_if_fail (GTK_IS_CSS_ANIMATION (animation), NULL);
if (animation->play_state == play_state)
return g_object_ref (animation);
return _gtk_css_animation_new (animation->name,
animation->keyframes,
at_time_us,
- gtk_css_animation_get_elapsed (animation, at_time_us),
animation->duration,
animation->ease,
animation->direction,
play_state,
animation->fill_mode,
animation->iteration_count);
}

7
gtk/gtkcssanimationprivate.h
View File

@ -60,7 +60,8 @@ GType _gtk_css_animation_get_type (void) G_GNUC_CONST;
GtkStyleAnimation * _gtk_css_animation_new (const char *name,
GtkCssKeyframes *keyframes,
gint64 start_time_us,
gint64 timestamp,
gint64 delay_us,
gint64 duration_us,
GtkCssValue *ease,
GtkCssDirection direction,
@ -68,6 +69,10 @@ GtkStyleAnimation * _gtk_css_animation_new (const char *
GtkCssFillMode fill_mode,
double iteration_count);
GtkStyleAnimation * _gtk_css_animation_copy (GtkCssAnimation *animation,
gint64 at_time_us,
GtkCssPlayState play_state);
const char * _gtk_css_animation_get_name (GtkCssAnimation *animation);
G_END_DECLS

18
gtk/gtkcsscomputedvalues.c
View File

@ -434,6 +434,7 @@ gtk_css_computed_values_find_animation (GtkCssComputedValues *values,
static void
gtk_css_computed_values_create_css_animations (GtkCssComputedValues *values,
gint64 timestamp,
GtkCssComputedValues *source,
GtkStyleContext *context)
{
GtkStyleProviderPrivate *provider;
@ -465,6 +466,17 @@ gtk_css_computed_values_create_css_animations (GtkCssComputedValues *values,
if (animation)
continue;
if (source)
animation = gtk_css_computed_values_find_animation (source, name);
if (animation)
{
animation = _gtk_css_animation_copy (GTK_CSS_ANIMATION (animation),
timestamp,
_gtk_css_play_state_value_get (_gtk_css_array_value_get_nth (play_states, i)));
}
else
{
keyframes = _gtk_style_provider_private_get_keyframes (provider, name);
if (keyframes == NULL)
continue;
@ -473,13 +485,15 @@ gtk_css_computed_values_create_css_animations (GtkCssComputedValues *values,
animation = _gtk_css_animation_new (name,
keyframes,
timestamp + _gtk_css_number_value_get (_gtk_css_array_value_get_nth (delays, i), 100) * G_USEC_PER_SEC,
timestamp,
_gtk_css_number_value_get (_gtk_css_array_value_get_nth (delays, i), 100) * G_USEC_PER_SEC,
_gtk_css_number_value_get (_gtk_css_array_value_get_nth (durations, i), 100) * G_USEC_PER_SEC,
_gtk_css_array_value_get_nth (timing_functions, i),
_gtk_css_direction_value_get (_gtk_css_array_value_get_nth (directions, i)),
_gtk_css_play_state_value_get (_gtk_css_array_value_get_nth (play_states, i)),
_gtk_css_fill_mode_value_get (_gtk_css_array_value_get_nth (fill_modes, i)),
_gtk_css_number_value_get (_gtk_css_array_value_get_nth (iteration_counts, i), 100));
}
values->animations = g_slist_prepend (values->animations, animation);
}
}
@ -494,7 +508,7 @@ _gtk_css_computed_values_create_animations (GtkCssComputedValues *values,
{
if (source != NULL)
gtk_css_computed_values_create_css_transitions (values, timestamp, source);
gtk_css_computed_values_create_css_animations (values, timestamp, context);
gtk_css_computed_values_create_css_animations (values, timestamp, source, context);
}
GtkBitmask *