static GtkBitmask *
gtk_css_transition_set_values (GtkStyleAnimation *animation,
GtkBitmask *changed,
gint64 for_time_us,
GtkCssComputedValues *values)
{
GtkCssTransition *transition = GTK_CSS_TRANSITION (animation);
GtkCssValue *value;
double progress;
if (transition->start_time >= for_time_us)
value = _gtk_css_value_ref (transition->start);
else if (transition->end_time <= for_time_us)
value = _gtk_css_value_ref (transition->end);
else
{
progress = (double) (for_time_us - transition->start_time) / (transition->end_time - transition->start_time);
progress = _gtk_css_ease_value_transform (transition->ease, progress);
value = _gtk_css_value_transition (transition->start,
transition->end,
progress);
if (value == NULL)
value = _gtk_css_value_ref (transition->end);
}
_gtk_css_computed_values_set_value (values, transition->property, value, NULL);
_gtk_css_value_unref (value);
return _gtk_bitmask_set (changed, transition->property, TRUE);
}
void
_gtk_css_computed_values_set_value (GtkCssComputedValues *values,
guint id,
GtkCssValue *value,
GtkCssDependencies dependencies,
GtkCssSection *section)
{
gtk_internal_return_if_fail (GTK_IS_CSS_COMPUTED_VALUES (values));
if (values->values == NULL)
values->values = g_ptr_array_new_full (_gtk_css_style_property_get_n_properties (),
(GDestroyNotify)_gtk_css_value_unref);
if (id >= values->values->len)
g_ptr_array_set_size (values->values, id + 1);
if (g_ptr_array_index (values->values, id))
_gtk_css_value_unref (g_ptr_array_index (values->values, id));
g_ptr_array_index (values->values, id) = _gtk_css_value_ref (value);
if (dependencies & (GTK_CSS_DEPENDS_ON_PARENT | GTK_CSS_EQUALS_PARENT))
values->depends_on_parent = _gtk_bitmask_set (values->depends_on_parent, id, TRUE);
if (dependencies & (GTK_CSS_EQUALS_PARENT))
values->equals_parent = _gtk_bitmask_set (values->equals_parent, id, TRUE);
if (dependencies & (GTK_CSS_DEPENDS_ON_COLOR))
values->depends_on_color = _gtk_bitmask_set (values->depends_on_color, id, TRUE);
if (dependencies & (GTK_CSS_DEPENDS_ON_FONT_SIZE))
values->depends_on_font_size = _gtk_bitmask_set (values->depends_on_font_size, id, TRUE);
if (values->sections && values->sections->len > id && g_ptr_array_index (values->sections, id))
{
gtk_css_section_unref (g_ptr_array_index (values->sections, id));
g_ptr_array_index (values->sections, id) = NULL;
}
if (section)
{
if (values->sections == NULL)
values->sections = g_ptr_array_new_with_free_func (maybe_unref_section);
if (values->sections->len <= id)
g_ptr_array_set_size (values->sections, id + 1);
g_ptr_array_index (values->sections, id) = gtk_css_section_ref (section);
}
}
GtkBitmask *
_gtk_css_computed_values_advance (GtkCssComputedValues *values,
gint64 timestamp)
{
GtkBitmask *changed;
GPtrArray *old_computed_values;
GSList *list;
guint i;
gtk_internal_return_val_if_fail (GTK_IS_CSS_COMPUTED_VALUES (values), NULL);
gtk_internal_return_val_if_fail (timestamp >= values->current_time, NULL);
values->current_time = timestamp;
old_computed_values = values->animated_values;
values->animated_values = NULL;
list = values->animations;
while (list)
{
GtkStyleAnimation *animation = list->data;
list = list->next;
_gtk_style_animation_set_values (animation,
timestamp,
GTK_CSS_COMPUTED_VALUES (values));
if (_gtk_style_animation_is_finished (animation, timestamp))
{
values->animations = g_slist_remove (values->animations, animation);
g_object_unref (animation);
}
}
/* figure out changes */
changed = _gtk_bitmask_new ();
for (i = 0; i < GTK_CSS_PROPERTY_N_PROPERTIES; i++)
{
GtkCssValue *old_animated, *new_animated;
old_animated = old_computed_values && i < old_computed_values->len ? g_ptr_array_index (old_computed_values, i) : NULL;
new_animated = values->animated_values && i < values->animated_values->len ? g_ptr_array_index (values->animated_values, i) : NULL;
if (!_gtk_css_value_equal0 (old_animated, new_animated))
changed = _gtk_bitmask_set (changed, i, TRUE);
}
if (old_computed_values)
g_ptr_array_unref (old_computed_values);
return changed;
}
/**
* _gtk_css_lookup_set:
* @lookup: the lookup
* @id: id of the property to set, see _gtk_style_property_get_id()
* @section: (allow-none): The @section the value was defined in or %NULL
* @value: the “cascading value” to use
*
* Sets the @value for a given @id. No value may have been set for @id
* before. See _gtk_css_lookup_is_missing(). This function is used to
* set the “winning declaration” of a lookup. Note that for performance
* reasons @value and @section are not copied. It is your responsibility
* to ensure they are kept alive until _gtk_css_lookup_free() is called.
**/
void
_gtk_css_lookup_set (GtkCssLookup *lookup,
guint id,
GtkCssSection *section,
GtkCssValue *value)
{
gtk_internal_return_if_fail (lookup != NULL);
gtk_internal_return_if_fail (_gtk_bitmask_get (lookup->missing, id));
gtk_internal_return_if_fail (value != NULL);
lookup->missing = _gtk_bitmask_set (lookup->missing, id, FALSE);
lookup->values[id].value = value;
lookup->values[id].section = section;
}
/**
* _gtk_css_style_property_get_mask_affecting:
* @flags: the flags that are affected
*
* Computes a bitmask for all properties that have at least one of @flags
* set.
*
* Returns: (transfer full): A #GtkBitmask with the bit set for every
* property that has at least one of @flags set.
*/
GtkBitmask *
_gtk_css_style_property_get_mask_affecting (GtkCssAffects affects)
{
GtkBitmask *result;
guint i;
result = _gtk_bitmask_new ();
for (i = 0; i < _gtk_css_style_property_get_n_properties (); i++)
{
GtkCssStyleProperty *prop = _gtk_css_style_property_lookup_by_id (i);
if (_gtk_css_style_property_get_affects (prop) & affects)
result = _gtk_bitmask_set (result, i, TRUE);
}
return result;
}
GtkBitmask *
gtk_css_style_get_difference (GtkCssStyle *style,
GtkCssStyle *other)
{
GtkBitmask *result;
guint i, len;
if (style == other)
return _gtk_bitmask_new ();
result = _gtk_bitmask_new ();
len = _gtk_css_style_property_get_n_properties ();
for (i = 0; i < len; i++)
{
if (!_gtk_css_value_equal (gtk_css_style_get_value (style, i),
gtk_css_style_get_value (other, i)))
result = _gtk_bitmask_set (result, i, TRUE);
}
return result;
}
GtkBitmask *
_gtk_css_computed_values_get_difference (GtkCssComputedValues *values,
GtkCssComputedValues *other)
{
GtkBitmask *result;
guint i, len;
len = MIN (values->values->len, other->values->len);
result = _gtk_bitmask_new ();
if (values->values->len != other->values->len)
result = _gtk_bitmask_invert_range (result, len, MAX (values->values->len, other->values->len));
for (i = 0; i < len; i++)
{
if (!_gtk_css_value_equal (g_ptr_array_index (values->values, i),
g_ptr_array_index (other->values, i)))
result = _gtk_bitmask_set (result, i, TRUE);
}
return result;
}
GtkBitmask *
gtk_css_style_add_difference (GtkBitmask *accumulated,
GtkCssStyle *style,
GtkCssStyle *other)
{
gint len, i;
if (style == other)
return accumulated;
len = _gtk_css_style_property_get_n_properties ();
for (i = 0; i < len; i++)
{
if (_gtk_bitmask_get (accumulated, i))
continue;
if (!_gtk_css_value_equal (gtk_css_style_get_value (style, i),
gtk_css_style_get_value (other, i)))
accumulated = _gtk_bitmask_set (accumulated, i, TRUE);
}
return accumulated;
}
void
_gtk_css_computed_values_compute_value (GtkCssComputedValues *values,
GtkStyleProviderPrivate *provider,
int scale,
GtkCssComputedValues *parent_values,
guint id,
GtkCssValue *specified,
GtkCssSection *section)
{
GtkCssDependencies dependencies;
GtkCssValue *value;
gtk_internal_return_if_fail (GTK_IS_CSS_COMPUTED_VALUES (values));
gtk_internal_return_if_fail (GTK_IS_STYLE_PROVIDER_PRIVATE (provider));
gtk_internal_return_if_fail (parent_values == NULL || GTK_IS_CSS_COMPUTED_VALUES (parent_values));
/* http://www.w3.org/TR/css3-cascade/#cascade
* Then, for every element, the value for each property can be found
* by following this pseudo-algorithm:
* 1) Identify all declarations that apply to the element
*/
if (specified == NULL)
{
GtkCssStyleProperty *prop = _gtk_css_style_property_lookup_by_id (id);
if (_gtk_css_style_property_is_inherit (prop))
specified = _gtk_css_inherit_value_new ();
else
specified = _gtk_css_initial_value_new ();
}
else
_gtk_css_value_ref (specified);
value = _gtk_css_value_compute (specified, id, provider, scale, values, parent_values, &dependencies);
if (values->values == NULL)
values->values = g_ptr_array_new_full (_gtk_css_style_property_get_n_properties (),
(GDestroyNotify)_gtk_css_value_unref);
if (id >= values->values->len)
g_ptr_array_set_size (values->values, id + 1);
if (g_ptr_array_index (values->values, id))
_gtk_css_value_unref (g_ptr_array_index (values->values, id));
g_ptr_array_index (values->values, id) = _gtk_css_value_ref (value);
if (dependencies & (GTK_CSS_DEPENDS_ON_PARENT | GTK_CSS_EQUALS_PARENT))
values->depends_on_parent = _gtk_bitmask_set (values->depends_on_parent, id, TRUE);
if (dependencies & (GTK_CSS_EQUALS_PARENT))
values->equals_parent = _gtk_bitmask_set (values->equals_parent, id, TRUE);
if (dependencies & (GTK_CSS_DEPENDS_ON_COLOR))
values->depends_on_color = _gtk_bitmask_set (values->depends_on_color, id, TRUE);
if (dependencies & (GTK_CSS_DEPENDS_ON_FONT_SIZE))
values->depends_on_font_size = _gtk_bitmask_set (values->depends_on_font_size, id, TRUE);
if (values->sections && values->sections->len > id && g_ptr_array_index (values->sections, id))
{
gtk_css_section_unref (g_ptr_array_index (values->sections, id));
g_ptr_array_index (values->sections, id) = NULL;
}
if (section)
{
if (values->sections == NULL)
values->sections = g_ptr_array_new_with_free_func (maybe_unref_section);
if (values->sections->len <= id)
g_ptr_array_set_size (values->sections, id + 1);
g_ptr_array_index (values->sections, id) = gtk_css_section_ref (section);
}
_gtk_css_value_unref (value);
_gtk_css_value_unref (specified);
}