css: Add GtkCssValue, an immutable refcounted css value

1 files changed, 467 insertions, 0 deletions

diff --git a/gtk/gtkcssvalue.c b/gtk/gtkcssvalue.c
new file mode 100644
index 0000000000..152297419b
--- /dev/null
+++ b/gtk/gtkcssvalue.c
@@ -0,0 +1,467 @@
+/* GTK - The GIMP Toolkit
+ * Copyright (C) 2011 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include "gtkcssvalueprivate.h"
+#include "gtktypebuiltins.h"
+#include "gtkgradient.h"
+#include <cairo-gobject.h>
+#include "gtkprivatetypebuiltins.h"
+
+struct _GtkCssValue
+{
+  volatile gint ref_count;
+  GValue g_value;
+};
+
+G_DEFINE_BOXED_TYPE (GtkCssValue, _gtk_css_value, _gtk_css_value_ref, _gtk_css_value_unref)
+
+static GtkCssValue *
+_gtk_css_value_new (void)
+{
+  GtkCssValue *value;
+
+  value = g_slice_new0 (GtkCssValue);
+
+  value->ref_count = 1;
+
+  return value;
+}
+
+GtkCssValue *
+_gtk_css_value_new_from_gvalue (const GValue *g_value)
+{
+  GtkCssValue *value;
+
+  g_return_val_if_fail (g_value != NULL, NULL);
+
+  value = _gtk_css_value_new ();
+
+  g_value_init (&value->g_value, G_VALUE_TYPE (g_value));
+  g_value_copy (g_value, &value->g_value);
+
+  return value;
+}
+
+GtkCssValue *
+_gtk_css_value_new_take_gvalue (GValue *g_value)
+{
+  GtkCssValue *value;
+
+  g_return_val_if_fail (g_value != NULL, NULL);
+
+  value = _gtk_css_value_new ();
+  value->g_value = *g_value;
+
+  return value;
+}
+
+GtkCssValue *
+_gtk_css_value_new_from_int (gint val)
+{
+  GtkCssValue *value;
+
+  value = _gtk_css_value_new ();
+  g_value_init (&value->g_value, G_TYPE_INT);
+  g_value_set_int (&value->g_value, val);
+
+  return value;
+}
+
+GtkCssValue *
+_gtk_css_value_new_take_string (char *string)
+{
+  GtkCssValue *value;
+
+  value = _gtk_css_value_new ();
+  g_value_init (&value->g_value, G_TYPE_STRING);
+  g_value_take_string (&value->g_value, string);
+
+  return value;
+}
+
+GtkCssValue *
+_gtk_css_value_new_from_string (const char *string)
+{
+  GtkCssValue *value;
+
+  value = _gtk_css_value_new ();
+  g_value_init (&value->g_value, G_TYPE_STRING);
+  g_value_set_string (&value->g_value, string);
+
+  return value;
+}
+
+GtkCssValue *
+_gtk_css_value_new_from_border (const GtkBorder *border)
+{
+  GtkCssValue *value;
+
+  value = _gtk_css_value_new ();
+  g_value_init (&value->g_value, GTK_TYPE_BORDER);
+  g_value_set_boxed (&value->g_value, border);
+
+  return value;
+}
+
+GtkCssValue *
+_gtk_css_value_new_take_pattern (cairo_pattern_t *v)
+{
+  GtkCssValue *value;
+
+  value = _gtk_css_value_new ();
+  g_value_init (&value->g_value, CAIRO_GOBJECT_TYPE_PATTERN);
+  g_value_take_boxed (&value->g_value, v);
+
+  return value;
+}
+
+GtkCssValue *
+_gtk_css_value_new_from_pattern (const cairo_pattern_t *v)
+{
+  GtkCssValue *value;
+
+  value = _gtk_css_value_new ();
+  g_value_init (&value->g_value, CAIRO_GOBJECT_TYPE_PATTERN);
+  g_value_set_boxed (&value->g_value, v);
+
+  return value;
+}
+
+GtkCssValue *
+_gtk_css_value_new_take_shadow (GtkShadow *v)
+{
+  GtkCssValue *value;
+
+  value = _gtk_css_value_new ();
+  g_value_init (&value->g_value, GTK_TYPE_SHADOW);
+  g_value_take_boxed (&value->g_value, v);
+
+  return value;
+}
+
+GtkCssValue *
+_gtk_css_value_new_take_font_description (PangoFontDescription *v)
+{
+  GtkCssValue *value;
+
+  value = _gtk_css_value_new ();
+  g_value_init (&value->g_value, PANGO_TYPE_FONT_DESCRIPTION);
+  g_value_take_boxed (&value->g_value, v);
+
+  return value;
+}
+
+GtkCssValue *
+_gtk_css_value_new_take_image (GtkCssImage *v)
+{
+  GtkCssValue *value;
+
+  value = _gtk_css_value_new ();
+  g_value_init (&value->g_value, GTK_TYPE_CSS_IMAGE);
+  g_value_take_object (&value->g_value, v);
+
+  return value;
+}
+
+GtkCssValue *
+_gtk_css_value_new_from_number (const GtkCssNumber *v)
+{
+  GtkCssValue *value;
+
+  value = _gtk_css_value_new ();
+  g_value_init (&value->g_value, GTK_TYPE_CSS_NUMBER);
+  g_value_set_boxed (&value->g_value, v);
+
+  return value;
+}
+
+GtkCssValue *
+_gtk_css_value_new_from_rgba (const GdkRGBA *v)
+{
+  GtkCssValue *value;
+
+  value = _gtk_css_value_new ();
+  g_value_init (&value->g_value, GDK_TYPE_RGBA);
+  g_value_set_boxed (&value->g_value, v);
+
+  return value;
+}
+
+GtkCssValue *
+_gtk_css_value_new_from_color (const GdkColor *v)
+{
+  GtkCssValue *value;
+
+  value = _gtk_css_value_new ();
+  g_value_init (&value->g_value, GDK_TYPE_COLOR);
+  g_value_set_boxed (&value->g_value, v);
+
+  return value;
+}
+
+GtkCssValue *
+_gtk_css_value_new_from_background_size (const GtkCssBackgroundSize *v)
+{
+  GtkCssValue *value;
+
+  value = _gtk_css_value_new ();
+  g_value_init (&value->g_value, GTK_TYPE_CSS_BACKGROUND_SIZE);
+  g_value_set_boxed (&value->g_value, v);
+
+  return value;
+}
+
+GtkCssValue *
+_gtk_css_value_new_take_symbolic_color (GtkSymbolicColor *v)
+{
+  GtkCssValue *value;
+
+  value = _gtk_css_value_new ();
+  g_value_init (&value->g_value, GTK_TYPE_SYMBOLIC_COLOR);
+  g_value_take_boxed (&value->g_value, v);
+
+  return value;
+}
+
+GtkCssValue *
+_gtk_css_value_ref (GtkCssValue *value)
+{
+  g_return_val_if_fail (value != NULL, NULL);
+
+  g_atomic_int_add (&value->ref_count, 1);
+
+  return value;
+}
+
+void
+_gtk_css_value_unref (GtkCssValue *value)
+{
+  if (value == NULL)
+    return;
+
+  if (!g_atomic_int_dec_and_test (&value->ref_count))
+    return;
+
+  g_value_unset (&value->g_value);
+  g_slice_free (GtkCssValue, value);
+}
+
+GType
+_gtk_css_value_get_content_type (GtkCssValue *value)
+{
+  return G_VALUE_TYPE (&value->g_value);
+}
+
+gboolean
+_gtk_css_value_holds (GtkCssValue *value, GType type)
+{
+  return G_VALUE_HOLDS (&value->g_value, type);
+}
+
+void
+_gtk_css_value_init_gvalue (GtkCssValue *value,
+			    GValue      *g_value)
+{
+  if (value != NULL)
+    {
+      g_value_init (g_value, G_VALUE_TYPE (&value->g_value));
+      g_value_copy (&value->g_value, g_value);
+    }
+}
+
+void
+_gtk_css_value_to_gvalue (GtkCssValue *value,
+			  GValue      *g_value)
+{
+  if (G_VALUE_TYPE (&value->g_value) == G_VALUE_TYPE (g_value))
+    g_value_copy (&value->g_value, g_value);
+  else if (g_value_type_transformable (G_VALUE_TYPE (&value->g_value), G_VALUE_TYPE (g_value)))
+    g_value_transform (&value->g_value, g_value);
+  else
+    g_warning ("can't convert css value of type `%s' as value of type `%s'",
+	       G_VALUE_TYPE_NAME (&value->g_value),
+	       G_VALUE_TYPE_NAME (g_value));
+}
+
+gboolean
+_gtk_css_value_is_special  (GtkCssValue *value)
+{
+  return _gtk_css_value_holds (value, GTK_TYPE_CSS_SPECIAL_VALUE);
+}
+
+GtkCssSpecialValue
+_gtk_css_value_get_special_kind  (GtkCssValue *value)
+{
+  g_return_val_if_fail (_gtk_css_value_holds (value, GTK_TYPE_CSS_SPECIAL_VALUE), 0);
+  return g_value_get_enum (&value->g_value);
+}
+
+GtkCssNumber *
+_gtk_css_value_get_number  (GtkCssValue *value)
+{
+  g_return_val_if_fail (_gtk_css_value_holds (value, GTK_TYPE_CSS_NUMBER), NULL);
+  return g_value_get_boxed (&value->g_value);
+}
+
+GtkSymbolicColor *
+_gtk_css_value_get_symbolic_color  (GtkCssValue *value)
+{
+  g_return_val_if_fail (_gtk_css_value_holds (value, GTK_TYPE_SYMBOLIC_COLOR), NULL);
+  return g_value_get_boxed (&value->g_value);
+}
+
+int
+_gtk_css_value_get_int (GtkCssValue *value)
+{
+  g_return_val_if_fail (_gtk_css_value_holds (value, G_TYPE_INT), 0);
+  return g_value_get_int (&value->g_value);
+}
+
+double
+_gtk_css_value_get_double (GtkCssValue *value)
+{
+  g_return_val_if_fail (_gtk_css_value_holds (value, G_TYPE_DOUBLE), 0);
+  return g_value_get_double (&value->g_value);
+}
+
+const char *
+_gtk_css_value_get_string (GtkCssValue *value)
+{
+  g_return_val_if_fail (_gtk_css_value_holds (value, G_TYPE_STRING), 0);
+  return g_value_get_string (&value->g_value);
+}
+
+gpointer
+_gtk_css_value_dup_object (GtkCssValue *value)
+{
+  g_return_val_if_fail (_gtk_css_value_holds (value, G_TYPE_OBJECT), NULL);
+  return g_value_dup_object (&value->g_value);
+}
+
+gpointer
+_gtk_css_value_get_object (GtkCssValue *value)
+{
+  g_return_val_if_fail (_gtk_css_value_holds (value, G_TYPE_OBJECT), NULL);
+  return g_value_get_object (&value->g_value);
+}
+
+gpointer
+_gtk_css_value_get_boxed (GtkCssValue *value)
+{
+  g_return_val_if_fail (_gtk_css_value_holds (value, G_TYPE_BOXED), NULL);
+  return g_value_get_boxed (&value->g_value);
+}
+
+const char **
+_gtk_css_value_get_strv (GtkCssValue *value)
+{
+  g_return_val_if_fail (_gtk_css_value_holds (value, G_TYPE_STRV), NULL);
+  return g_value_get_boxed (&value->g_value);
+}
+
+GtkCssImage *
+_gtk_css_value_get_image (GtkCssValue *value)
+{
+  g_return_val_if_fail (_gtk_css_value_holds (value, GTK_TYPE_CSS_IMAGE), NULL);
+  return g_value_get_object (&value->g_value);
+}
+
+GtkBorderStyle
+_gtk_css_value_get_border_style (GtkCssValue *value)
+{
+  g_return_val_if_fail (_gtk_css_value_holds (value, GTK_TYPE_BORDER_STYLE), 0);
+  return g_value_get_enum (&value->g_value);
+}
+
+GtkCssBackgroundSize *
+_gtk_css_value_get_background_size (GtkCssValue *value)
+{
+  g_return_val_if_fail (_gtk_css_value_holds (value, GTK_TYPE_CSS_BACKGROUND_SIZE), NULL);
+  return g_value_get_boxed (&value->g_value);
+}
+
+GtkCssBorderImageRepeat *
+_gtk_css_value_get_border_image_repeat (GtkCssValue *value)
+{
+  g_return_val_if_fail (_gtk_css_value_holds (value, GTK_TYPE_CSS_BORDER_IMAGE_REPEAT), NULL);
+  return g_value_get_boxed (&value->g_value);
+}
+
+GtkCssBorderCornerRadius *
+_gtk_css_value_get_border_corner_radius (GtkCssValue *value)
+{
+  g_return_val_if_fail (_gtk_css_value_holds (value, GTK_TYPE_CSS_BORDER_CORNER_RADIUS), NULL);
+  return g_value_get_boxed (&value->g_value);
+}
+
+PangoFontDescription *
+_gtk_css_value_get_font_description (GtkCssValue *value)
+{
+  g_return_val_if_fail (_gtk_css_value_holds (value, PANGO_TYPE_FONT_DESCRIPTION), 0);
+  return g_value_get_boxed (&value->g_value);
+}
+
+PangoStyle
+_gtk_css_value_get_pango_style (GtkCssValue *value)
+{
+  g_return_val_if_fail (_gtk_css_value_holds (value, PANGO_TYPE_STYLE), 0);
+  return g_value_get_enum (&value->g_value);
+}
+
+PangoVariant
+_gtk_css_value_get_pango_variant (GtkCssValue *value)
+{
+  g_return_val_if_fail (_gtk_css_value_holds (value, PANGO_TYPE_VARIANT), 0);
+  return g_value_get_enum (&value->g_value);
+}
+
+PangoWeight
+_gtk_css_value_get_pango_weight (GtkCssValue *value)
+{
+  g_return_val_if_fail (_gtk_css_value_holds (value, PANGO_TYPE_WEIGHT), 0);
+  return g_value_get_enum (&value->g_value);
+}
+
+GdkRGBA *
+_gtk_css_value_get_rgba (GtkCssValue *value)
+{
+  g_return_val_if_fail (_gtk_css_value_holds (value, GDK_TYPE_RGBA), NULL);
+  return g_value_get_boxed (&value->g_value);
+}
+
+cairo_pattern_t *
+_gtk_css_value_get_pattern (GtkCssValue *value)
+{
+  g_return_val_if_fail (_gtk_css_value_holds (value, CAIRO_GOBJECT_TYPE_PATTERN), NULL);
+  return g_value_get_boxed (&value->g_value);
+}
+
+GtkGradient *
+_gtk_css_value_get_gradient (GtkCssValue *value)
+{
+  g_return_val_if_fail (_gtk_css_value_holds (value, GTK_TYPE_GRADIENT), NULL);
+  return g_value_get_boxed (&value->g_value);
+}
+
+GtkShadow *
+_gtk_css_value_get_shadow (GtkCssValue *value)
+{
+  g_return_val_if_fail (_gtk_css_value_holds (value, GTK_TYPE_SHADOW), NULL);
+  return g_value_get_boxed (&value->g_value);
+}