css: Add "-gtk-icon-source: builtin"

... and make it the default. This takes over the meaning from "none" for
this property in that it draws the fallback builtin image.
"none" now literally means no image will be drawn.

1 files changed, 127 insertions, 0 deletions

diff --git a/gtk/gtkcssimagebuiltin.c b/gtk/gtkcssimagebuiltin.c
new file mode 100644
index 0000000000..87995a5a32
--- /dev/null
+++ b/gtk/gtkcssimagebuiltin.c
@@ -0,0 +1,127 @@
+/*
+ * Copyright © 2012 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 2.1 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/>.
+ *
+ * Authors: Benjamin Otte <otte@gnome.org>
+ */
+
+#include "config.h"
+
+#include "gtkcssimagebuiltinprivate.h"
+
+G_DEFINE_TYPE (GtkCssImageBuiltin, gtk_css_image_builtin, GTK_TYPE_CSS_IMAGE)
+
+static GtkCssImage *the_one_true_image;
+
+static void
+gtk_css_image_builtin_draw (GtkCssImage        *image,
+                            cairo_t            *cr,
+                            double              width,
+                            double              height)
+{
+  /* It's a builtin image, other code will draw things */
+}
+
+
+static gboolean
+gtk_css_image_builtin_parse (GtkCssImage  *image,
+                             GtkCssParser *parser)
+{
+  if (!_gtk_css_parser_try (parser, "builtin", TRUE))
+    {
+      _gtk_css_parser_error (parser, "Expected 'builtin'");
+      return FALSE;
+    }
+
+  return TRUE;
+}
+
+static void
+gtk_css_image_builtin_print (GtkCssImage *image,
+                             GString     *string)
+{
+  g_string_append (string, "builtin");
+}
+
+static GtkCssImage *
+gtk_css_image_builtin_compute (GtkCssImage             *image,
+                               guint                    property_id,
+                               GtkStyleProviderPrivate *provider,
+                               int                      scale,
+                               GtkCssComputedValues    *values,
+                               GtkCssComputedValues    *parent_values,
+                               GtkCssDependencies      *dependencies)
+{
+  return g_object_ref (image);
+}
+
+static gboolean
+gtk_css_image_builtin_equal (GtkCssImage *image1,
+                             GtkCssImage *image2)
+{
+  return TRUE;
+}
+
+static GtkCssImage *
+gtk_css_image_builtin_transition (GtkCssImage *start,
+                                  GtkCssImage *end,
+                                  guint        property_id,
+                                  double       progress)
+{
+  /* builtin images always look the same, so start == end */
+  return g_object_ref (start);
+}
+
+static void
+gtk_css_image_builtin_dispose (GObject *object)
+{
+  if (the_one_true_image == GTK_CSS_IMAGE (object))
+    the_one_true_image = NULL;
+
+  G_OBJECT_CLASS (gtk_css_image_builtin_parent_class)->dispose (object);
+}
+
+static void
+gtk_css_image_builtin_class_init (GtkCssImageBuiltinClass *klass)
+{
+  GtkCssImageClass *image_class = GTK_CSS_IMAGE_CLASS (klass);
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+  image_class->draw = gtk_css_image_builtin_draw;
+  image_class->parse = gtk_css_image_builtin_parse;
+  image_class->print = gtk_css_image_builtin_print;
+  image_class->compute = gtk_css_image_builtin_compute;
+  image_class->equal = gtk_css_image_builtin_equal;
+  image_class->transition = gtk_css_image_builtin_transition;
+
+  object_class->dispose = gtk_css_image_builtin_dispose;
+}
+
+static void
+gtk_css_image_builtin_init (GtkCssImageBuiltin *builtin)
+{
+}
+
+GtkCssImage *
+gtk_css_image_builtin_new (void)
+{
+  if (the_one_true_image == NULL)
+    the_one_true_image = g_object_new (GTK_TYPE_CSS_IMAGE_BUILTIN, NULL);
+  else
+    g_object_ref (the_one_true_image);
+
+  return the_one_true_image;
+}
+