cairo_pattern_t *
_gtk_gradient_resolve_full (GtkGradient *gradient,
GtkStyleProviderPrivate *provider,
GtkCssComputedValues *values,
GtkCssComputedValues *parent_values,
GtkCssDependencies *dependencies)
{
cairo_pattern_t *pattern;
guint i;
g_return_val_if_fail (gradient != NULL, NULL);
g_return_val_if_fail (GTK_IS_STYLE_PROVIDER (provider), NULL);
g_return_val_if_fail (GTK_IS_CSS_COMPUTED_VALUES (values), NULL);
g_return_val_if_fail (parent_values == NULL || GTK_IS_CSS_COMPUTED_VALUES (parent_values), NULL);
g_return_val_if_fail (*dependencies == 0, NULL);
if (gradient->radius0 == 0 && gradient->radius1 == 0)
pattern = cairo_pattern_create_linear (gradient->x0, gradient->y0,
gradient->x1, gradient->y1);
else
pattern = cairo_pattern_create_radial (gradient->x0, gradient->y0,
gradient->radius0,
gradient->x1, gradient->y1,
gradient->radius1);
for (i = 0; i < gradient->stops->len; i++)
{
ColorStop *stop;
GtkCssValue *val;
GdkRGBA rgba;
GtkCssDependencies stop_deps;
stop = &g_array_index (gradient->stops, ColorStop, i);
/* if color resolving fails, assume transparency */
val = _gtk_css_color_value_resolve (_gtk_symbolic_color_get_css_value (stop->color),
provider,
_gtk_css_computed_values_get_value (values, GTK_CSS_PROPERTY_COLOR),
GTK_CSS_DEPENDS_ON_COLOR,
&stop_deps,
NULL);
if (val)
{
rgba = *_gtk_css_rgba_value_get_rgba (val);
*dependencies = _gtk_css_dependencies_union (*dependencies, stop_deps);
_gtk_css_value_unref (val);
}
else
{
rgba.red = rgba.green = rgba.blue = rgba.alpha = 0.0;
}
cairo_pattern_add_color_stop_rgba (pattern, stop->offset,
rgba.red, rgba.green,
rgba.blue, rgba.alpha);
}
return pattern;
}
void
gtk_css_computed_values_print (GtkCssComputedValues *values,
GString *string)
{
guint i;
g_return_if_fail (GTK_IS_CSS_COMPUTED_VALUES (values));
g_return_if_fail (string != NULL);
for (i = 0; i < _gtk_css_style_property_get_n_properties (); i++)
{
GtkCssSection *section = _gtk_css_computed_values_get_section (values, i);
g_string_append (string, _gtk_style_property_get_name (GTK_STYLE_PROPERTY (_gtk_css_style_property_lookup_by_id (i))));
g_string_append (string, ": ");
_gtk_css_value_print (_gtk_css_computed_values_get_value (values, i), string);
g_string_append (string, ";");
if (section)
{
g_string_append (string, " /* ");
_gtk_css_section_print (section, string);
g_string_append (string, " */");
}
g_string_append (string, "\n");
}
}
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;
}
GtkCssSection *
_gtk_css_computed_values_get_section (GtkCssComputedValues *values,
guint id)
{
gtk_internal_return_val_if_fail (GTK_IS_CSS_COMPUTED_VALUES (values), NULL);
if (values->sections == NULL ||
id >= values->sections->len)
return NULL;
return g_ptr_array_index (values->sections, id);
}
GtkCssValue *
_gtk_css_computed_values_get_value (GtkCssComputedValues *values,
guint id)
{
gtk_internal_return_val_if_fail (GTK_IS_CSS_COMPUTED_VALUES (values), NULL);
if (values->animated_values &&
id < values->animated_values->len &&
g_ptr_array_index (values->animated_values, id))
return g_ptr_array_index (values->animated_values, id);
return _gtk_css_computed_values_get_intrinsic_value (values, id);
}
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);
}
char *
gtk_css_computed_values_to_string (GtkCssComputedValues *values)
{
GString *string;
g_return_val_if_fail (GTK_IS_CSS_COMPUTED_VALUES (values), NULL);
string = g_string_new ("");
gtk_css_computed_values_print (values, string);
return g_string_free (string, FALSE);
}
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;
}
GtkCssImage *
_gtk_css_image_compute (GtkCssImage *image,
guint property_id,
GtkStyleProviderPrivate *provider,
int scale,
GtkCssComputedValues *values,
GtkCssComputedValues *parent_values,
GtkCssDependencies *dependencies)
{
GtkCssDependencies unused;
GtkCssImageClass *klass;
g_return_val_if_fail (GTK_IS_CSS_IMAGE (image), NULL);
g_return_val_if_fail (GTK_IS_CSS_COMPUTED_VALUES (values), NULL);
g_return_val_if_fail (parent_values == NULL || GTK_IS_CSS_COMPUTED_VALUES (parent_values), NULL);
if (dependencies == NULL)
dependencies = &unused;
*dependencies = 0;
klass = GTK_CSS_IMAGE_GET_CLASS (image);
return klass->compute (image, property_id, provider, scale, values, parent_values, dependencies);
}
gboolean
_gtk_css_computed_values_is_static (GtkCssComputedValues *values)
{
GSList *list;
gtk_internal_return_val_if_fail (GTK_IS_CSS_COMPUTED_VALUES (values), TRUE);
for (list = values->animations; list; list = list->next)
{
if (!_gtk_style_animation_is_static (list->data, values->current_time))
return FALSE;
}
return TRUE;
}
GtkBitmask *
_gtk_css_computed_values_compute_dependencies (GtkCssComputedValues *values,
const GtkBitmask *parent_changes)
{
GtkBitmask *changes;
gtk_internal_return_val_if_fail (GTK_IS_CSS_COMPUTED_VALUES (values), _gtk_bitmask_new ());
changes = _gtk_bitmask_copy (parent_changes);
changes = _gtk_bitmask_intersect (changes, values->depends_on_parent);
if (_gtk_bitmask_get (changes, GTK_CSS_PROPERTY_COLOR))
changes = _gtk_bitmask_union (changes, values->depends_on_color);
if (_gtk_bitmask_get (changes, GTK_CSS_PROPERTY_FONT_SIZE))
changes = _gtk_bitmask_union (changes, values->depends_on_font_size);
return changes;
}
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_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_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);
}