void
_gtk_style_cascade_set_parent (GtkStyleCascade *cascade,
GtkStyleCascade *parent)
{
gtk_internal_return_if_fail (GTK_IS_STYLE_CASCADE (cascade));
gtk_internal_return_if_fail (parent == NULL || GTK_IS_STYLE_CASCADE (parent));
if (cascade->parent == parent)
return;
if (parent)
{
g_object_ref (parent);
g_signal_connect_swapped (parent,
"-gtk-private-changed",
G_CALLBACK (_gtk_style_provider_private_changed),
cascade);
}
if (cascade->parent)
{
g_signal_handlers_disconnect_by_func (cascade->parent,
_gtk_style_provider_private_changed,
cascade);
g_object_unref (cascade->parent);
}
cascade->parent = parent;
}
void
_gtk_style_cascade_add_provider (GtkStyleCascade *cascade,
GtkStyleProvider *provider,
guint priority)
{
GtkStyleProviderData data;
guint i;
gtk_internal_return_if_fail (GTK_IS_STYLE_CASCADE (cascade));
gtk_internal_return_if_fail (GTK_IS_STYLE_PROVIDER (provider));
gtk_internal_return_if_fail (GTK_STYLE_PROVIDER (cascade) != provider);
data.provider = g_object_ref (provider);
data.priority = priority;
data.changed_signal_id = g_signal_connect_swapped (provider,
"-gtk-private-changed",
G_CALLBACK (_gtk_style_provider_private_changed),
cascade);
/* ensure it gets removed first */
_gtk_style_cascade_remove_provider (cascade, provider);
for (i = 0; i < cascade->providers->len; i++)
{
if (g_array_index (cascade->providers, GtkStyleProviderData, i).priority > priority)
break;
}
g_array_insert_val (cascade->providers, i, data);
_gtk_style_provider_private_changed (GTK_STYLE_PROVIDER_PRIVATE (cascade));
}
/**
* _gtk_css_lookup_resolve:
* @lookup: the lookup
* @context: the context the values are resolved for
* @values: a new #GtkCssStyle to be filled with the new properties
*
* Resolves the current lookup into a styleproperties object. This is done
* by converting from the “winning declaration” to the “computed value”.
*
* XXX: This bypasses the notion of “specified value”. If this ever becomes
* an issue, go fix it.
**/
void
_gtk_css_lookup_resolve (GtkCssLookup *lookup,
GtkStyleProviderPrivate *provider,
GtkCssStaticStyle *style,
GtkCssStyle *parent_style)
{
guint i, n;
gtk_internal_return_if_fail (lookup != NULL);
gtk_internal_return_if_fail (GTK_IS_STYLE_PROVIDER_PRIVATE (provider));
gtk_internal_return_if_fail (GTK_IS_CSS_STATIC_STYLE (style));
gtk_internal_return_if_fail (parent_style == NULL || GTK_IS_CSS_STYLE (parent_style));
n = _gtk_css_style_property_get_n_properties ();
for (i = 0; i < n; i++)
{
if (lookup->values[i].value ||
_gtk_bitmask_get (lookup->missing, i))
gtk_css_static_style_compute_value (GTK_CSS_STATIC_STYLE (style),
provider,
parent_style,
i,
lookup->values[i].value,
lookup->values[i].section);
/* else not a relevant property */
}
}
void
_gtk_css_section_end (GtkCssSection *section)
{
gtk_internal_return_if_fail (section != NULL);
gtk_internal_return_if_fail (section->parser != NULL);
section->end_line = _gtk_css_parser_get_line (section->parser);
section->end_position = _gtk_css_parser_get_position (section->parser);
section->parser = NULL;
}
void
gtk_css_path_node_unset_context (GtkCssPathNode *node)
{
gtk_internal_return_if_fail (GTK_IS_CSS_PATH_NODE (node));
gtk_internal_return_if_fail (node->context != NULL);
node->context = NULL;
gtk_css_node_invalidate_style_provider (GTK_CSS_NODE (node));
}
void
gtk_css_widget_node_widget_destroyed (GtkCssWidgetNode *node)
{
gtk_internal_return_if_fail (GTK_IS_CSS_WIDGET_NODE (node));
gtk_internal_return_if_fail (node->widget != NULL);
node->widget = NULL;
/* Contents of this node are now undefined.
* So we don't clear the style or anything.
*/
}
/**
* _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_widget_path_free:
* @path: a #GtkWidgetPath
*
* Decrements the reference count on @path, freeing the structure
* if the reference count reaches 0.
*
* Since: 3.0
**/
void
gtk_widget_path_free (GtkWidgetPath *path)
{
gtk_internal_return_if_fail (path != NULL);
gtk_widget_path_unref (path);
}
void
_gtk_style_provider_private_changed (GtkStyleProviderPrivate *provider)
{
gtk_internal_return_if_fail (GTK_IS_STYLE_PROVIDER_PRIVATE (provider));
g_signal_emit (provider, signals[CHANGED], 0);
}
/**
* gtk_widget_path_unref:
* @path: a #GtkWidgetPath
*
* Decrements the reference count on @path, freeing the structure
* if the reference count reaches 0.
*
* Since: 3.2
**/
void
gtk_widget_path_unref (GtkWidgetPath *path)
{
guint i;
gtk_internal_return_if_fail (path != NULL);
path->ref_count -= 1;
if (path->ref_count > 0)
return;
for (i = 0; i < path->elems->len; i++)
{
GtkPathElement *elem;
elem = &g_array_index (path->elems, GtkPathElement, i);
gtk_css_node_declaration_unref (elem->decl);
if (elem->siblings)
gtk_widget_path_unref (elem->siblings);
}
g_array_free (path->elems, TRUE);
g_slice_free (GtkWidgetPath, path);
}
void
_gtk_css_lookup_free (GtkCssLookup *lookup)
{
gtk_internal_return_if_fail (lookup != NULL);
_gtk_bitmask_free (lookup->missing);
g_free (lookup);
}
void
gtk_css_animated_style_set_animated_value (GtkCssAnimatedStyle *style,
guint id,
GtkCssValue *value)
{
gtk_internal_return_if_fail (GTK_IS_CSS_ANIMATED_STYLE (style));
gtk_internal_return_if_fail (value != NULL);
if (style->animated_values == NULL)
style->animated_values = g_ptr_array_new_with_free_func ((GDestroyNotify)_gtk_css_value_unref);
if (id >= style->animated_values->len)
g_ptr_array_set_size (style->animated_values, id + 1);
if (g_ptr_array_index (style->animated_values, id))
_gtk_css_value_unref (g_ptr_array_index (style->animated_values, id));
g_ptr_array_index (style->animated_values, id) = _gtk_css_value_ref (value);
}
void
_gtk_css_computed_values_set_animated_value (GtkCssComputedValues *values,
guint id,
GtkCssValue *value)
{
gtk_internal_return_if_fail (GTK_IS_CSS_COMPUTED_VALUES (values));
gtk_internal_return_if_fail (value != NULL);
if (values->animated_values == NULL)
values->animated_values = g_ptr_array_new_with_free_func ((GDestroyNotify)_gtk_css_value_unref);
if (id >= values->animated_values->len)
g_ptr_array_set_size (values->animated_values, id + 1);
if (g_ptr_array_index (values->animated_values, id))
_gtk_css_value_unref (g_ptr_array_index (values->animated_values, id));
g_ptr_array_index (values->animated_values, id) = _gtk_css_value_ref (value);
}
void
_gtk_css_computed_values_compute_value (GtkCssComputedValues *values,
GtkStyleProviderPrivate *provider,
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, values, parent_values, &dependencies);
_gtk_css_computed_values_set_value (values, id, value, dependencies, section);
_gtk_css_value_unref (value);
_gtk_css_value_unref (specified);
}
void
_gtk_style_provider_private_lookup (GtkStyleProviderPrivate *provider,
const GtkCssMatcher *matcher,
GtkCssLookup *lookup,
GtkCssChange *out_change)
{
GtkStyleProviderPrivateInterface *iface;
gtk_internal_return_if_fail (GTK_IS_STYLE_PROVIDER_PRIVATE (provider));
gtk_internal_return_if_fail (matcher != NULL);
gtk_internal_return_if_fail (lookup != NULL);
if (out_change)
*out_change = 0;
iface = GTK_STYLE_PROVIDER_PRIVATE_GET_INTERFACE (provider);
if (!iface->lookup)
return;
iface->lookup (provider, matcher, lookup, out_change);
}
void
_gtk_style_cascade_remove_provider (GtkStyleCascade *cascade,
GtkStyleProvider *provider)
{
guint i;
gtk_internal_return_if_fail (GTK_IS_STYLE_CASCADE (cascade));
gtk_internal_return_if_fail (GTK_IS_STYLE_PROVIDER (provider));
for (i = 0; i < cascade->providers->len; i++)
{
GtkStyleProviderData *data = &g_array_index (cascade->providers, GtkStyleProviderData, i);
if (data->provider == provider)
{
g_array_remove_index (cascade->providers, i);
_gtk_style_provider_private_changed (GTK_STYLE_PROVIDER_PRIVATE (cascade));
break;
}
}
}
void
_gtk_style_cascade_set_scale (GtkStyleCascade *cascade,
int scale)
{
gtk_internal_return_if_fail (GTK_IS_STYLE_CASCADE (cascade));
if (cascade->scale == scale)
return;
cascade->scale = scale;
_gtk_style_provider_private_changed (GTK_STYLE_PROVIDER_PRIVATE (cascade));
}
void
_gtk_css_computed_values_cancel_animations (GtkCssComputedValues *values)
{
gtk_internal_return_if_fail (GTK_IS_CSS_COMPUTED_VALUES (values));
if (values->animated_values)
{
g_ptr_array_unref (values->animated_values);
values->animated_values = NULL;
}
g_slist_free_full (values->animations, g_object_unref);
values->animations = NULL;
}
/**
* gtk_css_section_unref:
* @section: a #GtkCssSection
*
* Decrements the reference count on @section, freeing the
* structure if the reference count reaches 0.
*
* Since: 3.2
**/
void
gtk_css_section_unref (GtkCssSection *section)
{
gtk_internal_return_if_fail (section != NULL);
section->ref_count -= 1;
if (section->ref_count > 0)
return;
if (section->parent)
gtk_css_section_unref (section->parent);
if (section->file)
g_object_unref (section->file);
g_slice_free (GtkCssSection, section);
}
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);
}
}
void
gtk_css_path_node_set_widget_path (GtkCssPathNode *node,
GtkWidgetPath *path)
{
gtk_internal_return_if_fail (GTK_IS_CSS_PATH_NODE (node));
if (node->path == path)
return;
if (node->path)
gtk_widget_path_unref (node->path);
if (path)
gtk_widget_path_ref (path);
node->path = path;
gtk_css_node_invalidate (GTK_CSS_NODE (node), GTK_CSS_CHANGE_ANY);
}
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);
}
