* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
**/
G_DEFINE_BOXED_TYPE (GtkWidgetPath, gtk_widget_path,
- gtk_widget_path_copy, gtk_widget_path_free)
+ gtk_widget_path_ref, gtk_widget_path_unref)
typedef struct GtkPathElement GtkPathElement;
GQuark name;
GHashTable *regions;
GArray *classes;
+ GtkWidgetPath *siblings;
+ guint sibling_index;
};
struct _GtkWidgetPath
{
+ volatile guint ref_count;
+
GArray *elems; /* First element contains the described widget */
};
path = g_slice_new0 (GtkWidgetPath);
path->elems = g_array_new (FALSE, TRUE, sizeof (GtkPathElement));
+ path->ref_count = 1;
return path;
}
+static void
+gtk_path_element_copy (GtkPathElement *dest,
+ const GtkPathElement *src)
+{
+ memset (dest, 0, sizeof (GtkPathElement));
+
+ dest->type = src->type;
+ dest->name = src->name;
+ if (src->siblings)
+ dest->siblings = gtk_widget_path_ref (src->siblings);
+ dest->sibling_index = src->sibling_index;
+
+ if (src->regions)
+ {
+ GHashTableIter iter;
+ gpointer key, value;
+
+ g_hash_table_iter_init (&iter, src->regions);
+ dest->regions = g_hash_table_new (NULL, NULL);
+
+ while (g_hash_table_iter_next (&iter, &key, &value))
+ g_hash_table_insert (dest->regions, key, value);
+ }
+
+ if (src->classes)
+ {
+ dest->classes = g_array_new (FALSE, FALSE, sizeof (GQuark));
+ g_array_append_vals (dest->classes, src->classes->data, src->classes->len);
+ }
+}
+
/**
* gtk_widget_path_copy:
* @path: a #GtkWidgetPath
new_path = gtk_widget_path_new ();
+ g_array_set_size (new_path->elems, path->elems->len);
+
for (i = 0; i < path->elems->len; i++)
{
- GtkPathElement *elem, new = { 0 };
+ GtkPathElement *elem, *dest;
elem = &g_array_index (path->elems, GtkPathElement, i);
+ dest = &g_array_index (new_path->elems, GtkPathElement, i);
- new.type = elem->type;
- new.name = elem->name;
-
- if (elem->regions)
- {
- GHashTableIter iter;
- gpointer key, value;
-
- g_hash_table_iter_init (&iter, elem->regions);
- new.regions = g_hash_table_new (NULL, NULL);
+ gtk_path_element_copy (dest, elem);
+ }
- while (g_hash_table_iter_next (&iter, &key, &value))
- g_hash_table_insert (new.regions, key, value);
- }
+ return new_path;
+}
- if (elem->classes)
- {
- new.classes = g_array_new (FALSE, FALSE, sizeof (GQuark));
- g_array_append_vals (new.classes, elem->classes->data, elem->classes->len);
- }
+/**
+ * gtk_widget_path_ref:
+ * @path: a #GtkWidgetPath
+ *
+ * Increments the reference count on @path.
+ *
+ * Returns: @path itself.
+ *
+ * Since: 3.2
+ **/
+GtkWidgetPath *
+gtk_widget_path_ref (GtkWidgetPath *path)
+{
+ g_return_val_if_fail (path != NULL, path);
- g_array_append_val (new_path->elems, new);
- }
+ g_atomic_int_add (&path->ref_count, 1);
- return new_path;
+ return path;
}
/**
- * gtk_widget_path_free:
+ * gtk_widget_path_unref:
* @path: a #GtkWidgetPath
*
- * Frees a #GtkWidgetPath.
+ * Decrements the reference count on @path, freeing the structure
+ * if the reference count reaches 0.
*
- * Since: 3.0
+ * Since: 3.2
**/
void
-gtk_widget_path_free (GtkWidgetPath *path)
+gtk_widget_path_unref (GtkWidgetPath *path)
{
guint i;
g_return_if_fail (path != NULL);
+ if (!g_atomic_int_dec_and_test (&path->ref_count))
+ return;
+
for (i = 0; i < path->elems->len; i++)
{
GtkPathElement *elem;
if (elem->classes)
g_array_free (elem->classes, TRUE);
+
+ if (elem->siblings)
+ gtk_widget_path_unref (elem->siblings);
}
g_array_free (path->elems, TRUE);
g_slice_free (GtkWidgetPath, path);
}
+/**
+ * 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)
+{
+ g_return_if_fail (path != NULL);
+
+ gtk_widget_path_unref (path);
+}
+
/**
* gtk_widget_path_length:
* @path: a #GtkWidgetPath
g_string_append_c (string, ')');
}
+
+ if (elem->siblings)
+ g_string_append_printf (string, "[%d/%d]",
+ elem->sibling_index + 1,
+ gtk_widget_path_length (elem->siblings));
+
if (elem->classes)
{
for (j = 0; j < elem->classes->len; j++)
"odd",
"first",
"last",
+ "only",
"sorted"
};
* @path: a #GtkWidgetPath
* @type: widget type to append
*
- * Appends a widget type to the widget hierachy represented by @path.
+ * Appends a widget type to the widget hierarchy represented by @path.
*
* Returns: the position where the element was inserted
*
return path->elems->len - 1;
}
+/**
+ * gtk_widget_path_append_with_siblings:
+ * @path: the widget path to append to
+ * @siblings: a widget path describing a list of siblings. This path
+ * may not contain any siblings itself and it must not be modified
+ * afterwards.
+ * @sibling_index: index into @siblings for where the added element is
+ * positioned.
+ *
+ * Appends a widget type with all its siblings to the widget hierarchy
+ * represented by @path. Using this function instead of
+ * gtk_widget_path_append_type() will allow the CSS theming to use
+ * sibling matches in selectors and apply :nth-child() pseudo classes.
+ * In turn, it requires a lot more care in widget implementations as
+ * widgets need to make sure to call gtk_widget_reset_style() on all
+ * involved widgets when the @siblings path changes.
+ *
+ * Returns: the position where the element was inserted.
+ *
+ * Since: 3.2
+ **/
+gint
+gtk_widget_path_append_with_siblings (GtkWidgetPath *path,
+ GtkWidgetPath *siblings,
+ guint sibling_index)
+{
+ GtkPathElement new;
+
+ g_return_val_if_fail (path != NULL, 0);
+ g_return_val_if_fail (siblings != NULL, 0);
+ g_return_val_if_fail (sibling_index < gtk_widget_path_length (siblings), 0);
+
+ gtk_path_element_copy (&new, &g_array_index (siblings->elems, GtkPathElement, sibling_index));
+ new.siblings = gtk_widget_path_ref (siblings);
+ new.sibling_index = sibling_index;
+ g_array_append_val (path->elems, new);
+
+ return path->elems->len - 1;
+}
+
+/**
+ * gtk_widget_path_iter_get_siblings:
+ * @path: a #GtkWidgetPath
+ * @pos: position to get the siblings for, -1 for the path head
+ *
+ * Returns the list of siblings for the element at @pos. If the element
+ * was not added with siblings, %NULL is returned.
+ *
+ * Returns: %NULL or the list of siblings for the element at @pos.
+ **/
+const GtkWidgetPath *
+gtk_widget_path_iter_get_siblings (const GtkWidgetPath *path,
+ gint pos)
+{
+ GtkPathElement *elem;
+
+ g_return_val_if_fail (path != NULL, G_TYPE_INVALID);
+ g_return_val_if_fail (path->elems->len != 0, G_TYPE_INVALID);
+
+ if (pos < 0 || pos >= path->elems->len)
+ pos = path->elems->len - 1;
+
+ elem = &g_array_index (path->elems, GtkPathElement, pos);
+ return elem->siblings;
+}
+
+/**
+ * gtk_widget_path_iter_get_sibling_index:
+ * @path: a #GtkWidgetPath
+ * @pos: position to get the sibling index for, -1 for the path head
+ *
+ * Returns the index into the list of siblings for the element at @pos as
+ * returned by gtk_widget_path_iter_get_siblings(). If that function would
+ * return %NULL because the element at @pos has no siblings, this function
+ * will return 0.
+ *
+ * Returns: 0 or the index into the list of siblings for the element at @pos.
+ **/
+guint
+gtk_widget_path_iter_get_sibling_index (const GtkWidgetPath *path,
+ gint pos)
+{
+ GtkPathElement *elem;
+
+ g_return_val_if_fail (path != NULL, G_TYPE_INVALID);
+ g_return_val_if_fail (path->elems->len != 0, G_TYPE_INVALID);
+
+ if (pos < 0 || pos >= path->elems->len)
+ pos = path->elems->len - 1;
+
+ elem = &g_array_index (path->elems, GtkPathElement, pos);
+ return elem->sibling_index;
+}
+
/**
* gtk_widget_path_iter_get_object_type:
* @path: a #GtkWidgetPath
*
* Returns: The widget name, or %NULL if none was set.
**/
-G_CONST_RETURN gchar *
+const gchar *
gtk_widget_path_iter_get_name (const GtkWidgetPath *path,
gint pos)
{
projects / ~andy / gtk / blobdiff