Initial cut at implementing a new color chooser

This is a partial implementation of
https://live.gnome.org/GnomeOS/Design/Whiteboards/ColorSelection
The new color editor has not been implemented yet.

1 files changed, 110 insertions, 0 deletions

diff --git a/gtk/gtkcolorchooser.c b/gtk/gtkcolorchooser.c
new file mode 100644
index 0000000000..a63566f84b
--- /dev/null
+++ b/gtk/gtkcolorchooser.c
@@ -0,0 +1,110 @@
+/* GTK - The GIMP Toolkit
+ *
+ * Copyright (C) 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 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, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include "config.h"
+
+#include "gtkcolorchooser.h"
+#include "gtkcolorchooserprivate.h"
+#include "gtkintl.h"
+#include "gtktypebuiltins.h"
+#include "gtkprivate.h"
+
+enum
+{
+  COLOR_ACTIVATED,
+  LAST_SIGNAL
+};
+
+static guint signals[LAST_SIGNAL];
+
+G_DEFINE_INTERFACE (GtkColorChooser, gtk_color_chooser, G_TYPE_OBJECT);
+
+static void
+gtk_color_chooser_default_init (GtkColorChooserInterface *iface)
+{
+  g_object_interface_install_property (iface,
+      g_param_spec_boxed ("color",
+                          P_("Color"),
+                          P_("Current color, as a GdkRGBA"),
+                          GDK_TYPE_RGBA,
+                          GTK_PARAM_READWRITE));
+
+  /**
+   * GtkColorChooser::color-activated:
+   * @self: the object which received the signal
+   * @color: the color
+   *
+   * Emitted when a color is activated from the color chooser.
+   * This usually happens when the user clicks a color swatch,
+   * or a color is selected and the user presses one of the keys
+   * Space, Shift+Space, Return or Enter.
+    */
+  signals[COLOR_ACTIVATED] =
+    g_signal_new ("color-activated",
+                  GTK_TYPE_COLOR_CHOOSER,
+                  G_SIGNAL_RUN_FIRST,
+                  G_STRUCT_OFFSET (GtkColorChooserInterface, color_activated),
+                  NULL, NULL,
+                  NULL,
+                  G_TYPE_NONE,
+                  1, G_TYPE_STRING);
+}
+
+/**
+ * gtk_color_chooser_get_color:
+ * @chooser: a #GtkColorChooser
+ * @color: return location for the color
+ *
+ * Gets the currently-selected color.
+ */
+void
+gtk_color_chooser_get_color (GtkColorChooser *chooser,
+                             GdkRGBA         *color)
+{
+  g_return_if_fail (GTK_IS_COLOR_CHOOSER (chooser));
+
+  GTK_COLOR_CHOOSER_GET_IFACE (chooser)->get_color (chooser, color);
+}
+
+/**
+ * gtk_color_chooser_set_color:
+ * @chooser: a #GtkColorChooser
+ * @color: the new color
+ *
+ * Sets the currently-selected color.
+ */
+void
+gtk_color_chooser_set_color (GtkColorChooser *chooser,
+                             const GdkRGBA   *color)
+{
+  g_return_if_fail (GTK_IS_COLOR_CHOOSER (chooser));
+  g_return_if_fail (color != NULL);
+
+  GTK_COLOR_CHOOSER_GET_IFACE (chooser)->set_color (chooser, color);
+}
+
+void
+_gtk_color_chooser_color_activated (GtkColorChooser *chooser,
+                                    const GdkRGBA   *color)
+{
+  g_return_if_fail (GTK_IS_COLOR_CHOOSER (chooser));
+
+  g_signal_emit (chooser, signals[COLOR_ACTIVATED], 0, color);
+}