static GtkCssValue *
gtk_css_value_bg_size_compute (GtkCssValue *value,
guint property_id,
GtkStyleProviderPrivate *provider,
int scale,
GtkCssComputedValues *values,
GtkCssComputedValues *parent_values,
GtkCssDependencies *dependencies)
{
GtkCssValue *x, *y;
GtkCssDependencies x_deps, y_deps;
if (value->x == NULL && value->y == NULL)
return _gtk_css_value_ref (value);
x_deps = y_deps = 0;
x = y = NULL;
if (value->x)
x = _gtk_css_value_compute (value->x, property_id, provider, scale, values, parent_values, &x_deps);
if (value->y)
y = _gtk_css_value_compute (value->y, property_id, provider, scale, values, parent_values, &y_deps);
*dependencies = _gtk_css_dependencies_union (x_deps, y_deps);
return _gtk_css_bg_size_value_new (value->x ? x : NULL,
value->y ? y : NULL);
}
static GtkCssValue *
gtk_css_value_shadows_compute (GtkCssValue *value,
guint property_id,
GtkStyleProviderPrivate *provider,
int scale,
GtkCssComputedValues *values,
GtkCssComputedValues *parent_values,
GtkCssDependencies *dependencies)
{
GtkCssValue *result;
GtkCssDependencies child_deps;
guint i;
if (value->len == 0)
return _gtk_css_value_ref (value);
result = gtk_css_shadows_value_new (value->values, value->len);
for (i = 0; i < value->len; i++)
{
result->values[i] = _gtk_css_value_compute (value->values[i], property_id, provider, scale, values, parent_values, &child_deps);
*dependencies = _gtk_css_dependencies_union (*dependencies, child_deps);
}
return result;
}
static GtkCssImage *
gtk_css_image_radial_compute (GtkCssImage *image,
guint property_id,
GtkStyleProviderPrivate *provider,
GtkCssStyle *style,
GtkCssStyle *parent_style)
{
GtkCssImageRadial *radial = GTK_CSS_IMAGE_RADIAL (image);
GtkCssImageRadial *copy;
guint i;
copy = g_object_new (GTK_TYPE_CSS_IMAGE_RADIAL, NULL);
copy->repeating = radial->repeating;
copy->circle = radial->circle;
copy->size = radial->size;
copy->position = _gtk_css_value_compute (radial->position, property_id, provider, style, parent_style);
if (radial->sizes[0])
copy->sizes[0] = _gtk_css_value_compute (radial->sizes[0], property_id, provider, style, parent_style);
if (radial->sizes[1])
copy->sizes[1] = _gtk_css_value_compute (radial->sizes[1], property_id, provider, style, parent_style);
g_array_set_size (copy->stops, radial->stops->len);
for (i = 0; i < radial->stops->len; i++)
{
GtkCssImageRadialColorStop *stop, *scopy;
stop = &g_array_index (radial->stops, GtkCssImageRadialColorStop, i);
scopy = &g_array_index (copy->stops, GtkCssImageRadialColorStop, i);
scopy->color = _gtk_css_value_compute (stop->color, property_id, provider, style, parent_style);
if (stop->offset)
{
scopy->offset = _gtk_css_value_compute (stop->offset, property_id, provider, style, parent_style);
}
else
{
scopy->offset = NULL;
}
}
return GTK_CSS_IMAGE (copy);
}
static GtkCssValue *
gtk_css_value_initial_compute (GtkCssValue *value,
guint property_id,
GtkStyleProviderPrivate *provider,
GtkCssStyle *style,
GtkCssStyle *parent_style)
{
GtkSettings *settings;
switch (property_id)
{
case GTK_CSS_PROPERTY_DPI:
settings = _gtk_style_provider_private_get_settings (provider);
if (settings)
{
GdkScreen *screen = _gtk_settings_get_screen (settings);
double resolution = gdk_screen_get_resolution (screen);
if (resolution > 0.0)
return _gtk_css_number_value_new (resolution, GTK_CSS_NUMBER);
}
break;
case GTK_CSS_PROPERTY_FONT_FAMILY:
settings = _gtk_style_provider_private_get_settings (provider);
if (settings)
{
PangoFontDescription *description;
char *font_name;
GtkCssValue *value;
g_object_get (settings, "gtk-font-name", &font_name, NULL);
description = pango_font_description_from_string (font_name);
g_free (font_name);
if (description == NULL)
break;
if (pango_font_description_get_set_fields (description) & PANGO_FONT_MASK_FAMILY)
{
value = _gtk_css_array_value_new (_gtk_css_string_value_new (pango_font_description_get_family (description)));
pango_font_description_free (description);
return value;
}
pango_font_description_free (description);
}
break;
default:
break;
}
return _gtk_css_value_compute (_gtk_css_style_property_get_initial_value (_gtk_css_style_property_lookup_by_id (property_id)),
property_id,
provider,
style,
parent_style);
}
static GtkCssImage *
gtk_css_image_linear_compute (GtkCssImage *image,
guint property_id,
GtkStyleProviderPrivate *provider,
GtkCssStyle *style,
GtkCssStyle *parent_style)
{
GtkCssImageLinear *linear = GTK_CSS_IMAGE_LINEAR (image);
GtkCssImageLinear *copy;
guint i;
copy = g_object_new (GTK_TYPE_CSS_IMAGE_LINEAR, NULL);
copy->repeating = linear->repeating;
copy->side = linear->side;
if (linear->angle)
copy->angle = _gtk_css_value_compute (linear->angle, property_id, provider, style, parent_style);
g_array_set_size (copy->stops, linear->stops->len);
for (i = 0; i < linear->stops->len; i++)
{
GtkCssImageLinearColorStop *stop, *scopy;
stop = &g_array_index (linear->stops, GtkCssImageLinearColorStop, i);
scopy = &g_array_index (copy->stops, GtkCssImageLinearColorStop, i);
scopy->color = _gtk_css_value_compute (stop->color, property_id, provider, style, parent_style);
if (stop->offset)
{
scopy->offset = _gtk_css_value_compute (stop->offset, property_id, provider, style, parent_style);
}
else
{
scopy->offset = NULL;
}
}
return GTK_CSS_IMAGE (copy);
}
static GtkCssValue *
gtk_css_value_bg_size_compute (GtkCssValue *value,
guint property_id,
GtkStyleProviderPrivate *provider,
GtkCssStyle *style,
GtkCssStyle *parent_style)
{
GtkCssValue *x, *y;
if (value->x == NULL && value->y == NULL)
return _gtk_css_value_ref (value);
x = y = NULL;
if (value->x)
x = _gtk_css_value_compute (value->x, property_id, provider, style, parent_style);
if (value->y)
y = _gtk_css_value_compute (value->y, property_id, provider, style, parent_style);
return _gtk_css_bg_size_value_new (value->x ? x : NULL,
value->y ? y : NULL);
}
static GtkCssImage *
gtk_css_image_fallback_compute (GtkCssImage *image,
guint property_id,
GtkStyleProviderPrivate *provider,
GtkCssStyle *style,
GtkCssStyle *parent_style)
{
GtkCssImageFallback *fallback = GTK_CSS_IMAGE_FALLBACK (image);
GtkCssImageFallback *copy;
int i;
if (fallback->used < 0)
{
copy = g_object_new (_gtk_css_image_fallback_get_type (), NULL);
copy->n_images = fallback->n_images;
copy->images = g_new (GtkCssImage *, fallback->n_images);
for (i = 0; i < fallback->n_images; i++)
{
copy->images[i] = _gtk_css_image_compute (fallback->images[i],
property_id,
provider,
style,
parent_style);
/* Assume that failing to load an image leaves a 0x0 surface image */
if (GTK_IS_CSS_IMAGE_SURFACE (copy->images[i]) &&
_gtk_css_image_get_width (copy->images[i]) == 0 &&
_gtk_css_image_get_height (copy->images[i]) == 0)
continue;
if (copy->used < 0)
copy->used = i;
}
if (fallback->color)
copy->color = _gtk_css_value_compute (fallback->color,
property_id,
provider,
style,
parent_style);
else
copy->color = NULL;
return GTK_CSS_IMAGE (copy);
}
static GtkCssImage *
gtk_css_image_fallback_compute (GtkCssImage *image,
guint property_id,
GtkStyleProvider *provider,
GtkCssStyle *style,
GtkCssStyle *parent_style)
{
GtkCssImageFallback *fallback = GTK_CSS_IMAGE_FALLBACK (image);
GtkCssImageFallback *copy;
int i;
if (fallback->used < 0)
{
copy = g_object_new (_gtk_css_image_fallback_get_type (), NULL);
copy->n_images = fallback->n_images;
copy->images = g_new (GtkCssImage *, fallback->n_images);
for (i = 0; i < fallback->n_images; i++)
{
copy->images[i] = _gtk_css_image_compute (fallback->images[i],
property_id,
provider,
style,
parent_style);
if (gtk_css_image_is_invalid (copy->images[i]))
continue;
if (copy->used < 0)
copy->used = i;
}
if (fallback->color)
copy->color = _gtk_css_value_compute (fallback->color,
property_id,
provider,
style,
parent_style);
else
copy->color = NULL;
return GTK_CSS_IMAGE (copy);
}
static GtkCssValue *
gtk_css_value_inherit_compute (GtkCssValue *value,
guint property_id,
GtkStyleProviderPrivate *provider,
GtkCssStyle *style,
GtkCssStyle *parent_style)
{
if (parent_style)
{
return _gtk_css_value_ref (gtk_css_style_get_value (parent_style, property_id));
}
else
{
return _gtk_css_value_compute (_gtk_css_initial_value_get (),
property_id,
provider,
style,
parent_style);
}
}
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);
}
static GtkCssValue *
gtk_css_value_unset_compute (GtkCssValue *value,
guint property_id,
GtkStyleProviderPrivate *provider,
GtkCssStyle *style,
GtkCssStyle *parent_style)
{
GtkCssStyleProperty *property;
GtkCssValue *unset_value;
property = _gtk_css_style_property_lookup_by_id (property_id);
if (_gtk_css_style_property_is_inherit (property))
unset_value = _gtk_css_inherit_value_get ();
else
unset_value = _gtk_css_initial_value_get ();
return _gtk_css_value_compute (unset_value,
property_id,
provider,
style,
parent_style);
}
static GtkCssValue *
gtk_css_value_inherit_compute (GtkCssValue *value,
guint property_id,
GtkStyleProviderPrivate *provider,
GtkCssComputedValues *values,
GtkCssComputedValues *parent_values,
GtkCssDependencies *dependencies)
{
if (parent_values)
{
*dependencies = GTK_CSS_EQUALS_PARENT;
return _gtk_css_value_ref (_gtk_css_computed_values_get_value (parent_values, property_id));
}
else
{
return _gtk_css_value_compute (_gtk_css_initial_value_get (),
property_id,
provider,
values,
parent_values,
dependencies);
}
}
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);
}