void
_gtk_style_cascade_add_provider (GtkStyleCascade *cascade,
GtkStyleProvider *provider,
guint priority)
{
GtkStyleProviderData data;
guint i;
g_return_if_fail (GTK_IS_STYLE_CASCADE (cascade));
g_return_if_fail (GTK_IS_STYLE_PROVIDER (provider));
g_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));
}
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;
}
/**
* gtk_style_provider_get_style:
* @provider: a #GtkStyleProvider
* @path: #GtkWidgetPath to query
*
* Returns the style settings affecting a widget defined by @path, or %NULL if
* @provider doesn't contemplate styling @path.
*
* Returns: (transfer full): a #GtkStyleProperties containing the
* style settings affecting @path
*
* Since: 3.0
*
* Deprecated: 3.8: Will always return %NULL for all GTK-provided style providers
* as the interface cannot correctly work the way CSS is specified.
**/
GtkStyleProperties *
gtk_style_provider_get_style (GtkStyleProvider *provider,
GtkWidgetPath *path)
{
GtkStyleProviderIface *iface;
g_return_val_if_fail (GTK_IS_STYLE_PROVIDER (provider), NULL);
iface = GTK_STYLE_PROVIDER_GET_IFACE (provider);
if (!iface->get_style)
return NULL;
return iface->get_style (provider, path);
}
/**
* gtk_style_provider_get_icon_factory:
* @provider: a #GtkStyleProvider
* @path: #GtkWidgetPath to query
*
* Returns the #GtkIconFactory defined to be in use for @path, or %NULL if none
* is defined.
*
* Returns: (transfer none): The icon factory to use for @path, or %NULL
*
* Since: 3.0
*
* Deprecated: 3.8: Will always return %NULL for all GTK-provided style providers.
**/
GtkIconFactory *
gtk_style_provider_get_icon_factory (GtkStyleProvider *provider,
GtkWidgetPath *path)
{
GtkStyleProviderIface *iface;
g_return_val_if_fail (GTK_IS_STYLE_PROVIDER (provider), NULL);
g_return_val_if_fail (path != NULL, NULL);
iface = GTK_STYLE_PROVIDER_GET_IFACE (provider);
if (!iface->get_icon_factory)
return NULL;
return iface->get_icon_factory (provider, path);
}
void
_gtk_style_cascade_remove_provider (GtkStyleCascade *cascade,
GtkStyleProvider *provider)
{
guint i;
g_return_if_fail (GTK_IS_STYLE_CASCADE (cascade));
g_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;
}
}
}
/**
* gtk_style_provider_get_style_property:
* @provider: a #GtkStyleProvider
* @path: #GtkWidgetPath to query
* @state: state to query the style property for
* @pspec: The #GParamSpec to query
* @value: (out): return location for the property value
*
* Looks up a widget style property as defined by @provider for
* the widget represented by @path.
*
* Returns: %TRUE if the property was found and has a value, %FALSE otherwise
*
* Since: 3.0
**/
gboolean
gtk_style_provider_get_style_property (GtkStyleProvider *provider,
GtkWidgetPath *path,
GtkStateFlags state,
GParamSpec *pspec,
GValue *value)
{
GtkStyleProviderIface *iface;
g_return_val_if_fail (GTK_IS_STYLE_PROVIDER (provider), FALSE);
g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), FALSE);
g_return_val_if_fail (path != NULL, FALSE);
g_return_val_if_fail (g_type_is_a (gtk_widget_path_get_object_type (path), pspec->owner_type), FALSE);
g_return_val_if_fail (value != NULL, FALSE);
iface = GTK_STYLE_PROVIDER_GET_IFACE (provider);
if (!iface->get_style_property)
return FALSE;
return iface->get_style_property (provider, path, state, pspec, value);
}
GtkCssStyle *
gtk_css_animated_style_new (GtkCssStyle *base_style,
GtkCssStyle *parent_style,
gint64 timestamp,
GtkStyleProviderPrivate *provider,
GtkCssStyle *previous_style)
{
GtkCssAnimatedStyle *result;
GSList *animations;
gtk_internal_return_val_if_fail (GTK_IS_CSS_STYLE (base_style), NULL);
gtk_internal_return_val_if_fail (parent_style == NULL || GTK_IS_CSS_STYLE (parent_style), NULL);
gtk_internal_return_val_if_fail (GTK_IS_STYLE_PROVIDER (provider), NULL);
gtk_internal_return_val_if_fail (previous_style == NULL || GTK_IS_CSS_STYLE (previous_style), NULL);
if (timestamp == 0)
return g_object_ref (base_style);
animations = NULL;
if (previous_style != NULL)
animations = gtk_css_animated_style_create_css_transitions (animations, base_style, timestamp, previous_style);
animations = gtk_css_animated_style_create_css_animations (animations, base_style, parent_style, timestamp, provider, previous_style);
if (animations == NULL)
return g_object_ref (base_style);
result = g_object_new (GTK_TYPE_CSS_ANIMATED_STYLE, NULL);
result->style = g_object_ref (base_style);
result->current_time = timestamp;
result->animations = animations;
gtk_css_animated_style_apply_animations (result);
return GTK_CSS_STYLE (result);
}
