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[gtk+/picture: 11/17] gtk: Add GtkIconSetPicture

commit c4c1d046e201e7843128ff546d998f4d9f867c44
Author: Benjamin Otte <otte redhat com>
Date:   Wed Feb 9 18:17:44 2011 +0100

    gtk: Add GtkIconSetPicture
    
    Does what it says.

 gtk/Makefile.am         |    2 +
 gtk/gtk.h               |    1 +
 gtk/gtk.symbols         |    6 +
 gtk/gtkiconsetpicture.c |  372 +++++++++++++++++++++++++++++++++++++++++++++++
 gtk/gtkiconsetpicture.h |   67 +++++++++
 5 files changed, 448 insertions(+), 0 deletions(-)
---
diff --git a/gtk/Makefile.am b/gtk/Makefile.am
index ad0a832..396f7e9 100644
--- a/gtk/Makefile.am
+++ b/gtk/Makefile.am
@@ -227,6 +227,7 @@ gtk_public_h_sources = 		\
 	gtkhseparator.h		\
 	gtkhsv.h		\
 	gtkiconfactory.h	\
+	gtkiconsetpicture.h	\
 	gtkicontheme.h		\
 	gtkiconview.h		\
 	gtkimage.h		\
@@ -548,6 +549,7 @@ gtk_base_c_sources = 		\
 	gtkiconcache.c		\
 	gtkiconcachevalidator.c	\
 	gtkiconfactory.c	\
+	gtkiconsetpicture.c	\
 	gtkicontheme.c		\
 	gtkiconview.c		\
 	gtkimage.c		\
diff --git a/gtk/gtk.h b/gtk/gtk.h
index f0c689c..d331a72 100644
--- a/gtk/gtk.h
+++ b/gtk/gtk.h
@@ -113,6 +113,7 @@
 #include <gtk/gtkhseparator.h>
 #include <gtk/gtkhsv.h>
 #include <gtk/gtkiconfactory.h>
+#include <gtk/gtkiconsetpicture.h>
 #include <gtk/gtkicontheme.h>
 #include <gtk/gtkiconview.h>
 #include <gtk/gtkimage.h>
diff --git a/gtk/gtk.symbols b/gtk/gtk.symbols
index 6cd7af8..8ca5a48 100644
--- a/gtk/gtk.symbols
+++ b/gtk/gtk.symbols
@@ -1148,6 +1148,12 @@ gtk_icon_set_get_sizes
 gtk_icon_set_get_type G_GNUC_CONST
 gtk_icon_set_new
 gtk_icon_set_new_from_pixbuf
+gtk_icon_set_picture_get_icon_set
+gtk_icon_set_picture_get_size
+gtk_icon_set_picture_get_type G_GNUC_CONST
+gtk_icon_set_picture_new
+gtk_icon_set_picture_set_icon_set
+gtk_icon_set_picture_set_size
 gtk_icon_set_ref
 gtk_icon_set_render_icon
 gtk_icon_set_render_icon_pixbuf
diff --git a/gtk/gtkiconsetpicture.c b/gtk/gtkiconsetpicture.c
new file mode 100644
index 0000000..0193cfd
--- /dev/null
+++ b/gtk/gtkiconsetpicture.c
@@ -0,0 +1,372 @@
+/* GTK - The GIMP Drawing Kit
+ * Copyright (C) 2010 Benjamin Otte <otte gnome org>
+ *
+ * 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 "gtkiconsetpicture.h"
+
+#include <cairo-gobject.h>
+
+#include "gtkintl.h"
+#include "gtkprivate.h"
+#include "gtkstyledpicture.h"
+
+struct _GtkIconSetPicturePrivate {
+  GdkPicture *picture;
+  GtkIconSet *set;
+  GtkIconSize size;
+};
+
+enum {
+  PROP_0,
+  PROP_ICON_SET,
+  PROP_SIZE
+};
+
+static void
+gtk_icon_set_picture_update_picture (GtkIconSetPicture *picture)
+{
+  GtkIconSetPicturePrivate *priv = picture->priv;
+  GtkIconSet *icon_set;
+  GtkStyleContext *style;
+  GdkPixbuf *pixbuf;
+  GtkWidgetPath *path;
+  
+  path = gtk_widget_path_new ();
+  style = gtk_style_context_new ();
+  gtk_style_context_set_path (style, path);
+  gtk_widget_path_free (path);
+
+  if (priv->set == NULL)
+    {
+      icon_set = gtk_style_context_lookup_icon_set (style, GTK_STOCK_MISSING_IMAGE);
+      g_assert (icon_set);
+    }
+  else
+    icon_set = priv->set;
+
+  pixbuf = gtk_icon_set_render_icon_pixbuf (icon_set, style, priv->size);
+  gdk_pixbuf_picture_set_pixbuf (GDK_PIXBUF_PICTURE (priv->picture), pixbuf);
+  g_object_unref (pixbuf);
+
+  g_object_unref (style);
+}
+
+static GdkPicture *
+gtk_icon_set_picture_update_styled (GtkStyledPicture *styled,
+                                    GdkPicture *pixbuf_picture)
+{
+  GdkPicture *icon = gtk_picture_get_unstyled (GDK_PICTURE (styled));
+  GtkWidget *widget = gtk_styled_picture_get_widget (styled);
+  GtkIconSetPicturePrivate *priv = GTK_ICON_SET_PICTURE (icon)->priv;
+  GtkIconSet *icon_set;
+  GtkStyleContext *style;
+  GdkPixbuf *pixbuf;
+
+  style = gtk_widget_get_style_context (widget);
+  gtk_style_context_save (style);
+  gtk_style_context_set_state (style, gtk_widget_get_state_flags (widget));
+
+  if (priv->set == NULL)
+    {
+      icon_set = gtk_style_context_lookup_icon_set (style, GTK_STOCK_MISSING_IMAGE);
+      g_assert (icon_set);
+    }
+  else
+    icon_set = priv->set;
+
+  pixbuf = gtk_icon_set_render_icon_pixbuf (icon_set, style, priv->size);
+  gdk_pixbuf_picture_set_pixbuf (GDK_PIXBUF_PICTURE (pixbuf_picture), pixbuf);
+  g_object_unref (pixbuf);
+
+  gtk_style_context_restore (style);
+
+  g_object_ref (pixbuf_picture);
+  return pixbuf_picture;
+}
+
+static GdkPicture *
+gtk_icon_set_picture_attach (GdkPicture *picture,
+                             GtkWidget  *widget)
+{
+  GdkPicture *styled;
+  GdkPicture *pixbuf_picture;
+
+  styled = gtk_styled_picture_new (picture, widget);
+  pixbuf_picture = gdk_pixbuf_picture_new (NULL);
+  g_signal_connect (styled, "update", G_CALLBACK (gtk_icon_set_picture_update_styled), pixbuf_picture);
+  gtk_styled_picture_update (GTK_STYLED_PICTURE (styled));
+  /* We can get rid of it here. styled will have a reference to it
+   * and keep that reference until it goes away. */
+  g_object_unref (pixbuf_picture);
+
+  return styled;
+}
+
+static void
+gtk_icon_set_picture_stylable_picture_init (GtkStylablePictureInterface *iface)
+{
+  iface->attach = gtk_icon_set_picture_attach;
+}
+
+G_DEFINE_TYPE_WITH_CODE (GtkIconSetPicture, gtk_icon_set_picture, GDK_TYPE_PICTURE,
+			 G_IMPLEMENT_INTERFACE (GTK_TYPE_STYLABLE_PICTURE,
+						gtk_icon_set_picture_stylable_picture_init))
+
+/**
+ * SECTION:gtkiconsetpicture
+ * @Short_description: Pictures for #GtkIconSets
+ * @Title: GtkIconSetPicture
+ * @See_also: #GtkIconSet
+ *
+ * A #GtkIconSetPicture is an implementation of #GdkPicture for icon sets.
+ */
+
+static void
+gtk_icon_set_picture_get_property (GObject    *object,
+                                   guint       prop_id,
+                                   GValue     *value,
+                                   GParamSpec *pspec)
+{
+  GtkIconSetPicture *picture = GTK_ICON_SET_PICTURE (object);
+  GtkIconSetPicturePrivate *priv = picture->priv;
+
+  switch (prop_id)
+    {
+    case PROP_ICON_SET:
+      g_value_set_boxed (value, priv->set);
+      break;
+    case PROP_SIZE:
+      g_value_set_int (value, priv->size);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+    }
+}
+
+static void
+gtk_icon_set_picture_set_property (GObject      *object,
+                                   guint         prop_id,
+                                   const GValue *value,
+                                   GParamSpec   *pspec)
+{
+  GtkIconSetPicture *picture = GTK_ICON_SET_PICTURE (object);
+
+  switch (prop_id)
+    {
+    case PROP_ICON_SET:
+      gtk_icon_set_picture_set_icon_set (picture, g_value_get_boxed (value));
+      break;
+    case PROP_SIZE:
+      gtk_icon_set_picture_set_size (picture, g_value_get_int (value));
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+    }
+}
+
+static void
+gtk_icon_set_picture_dispose (GObject *object)
+{
+  GtkIconSetPicture *icon_set = GTK_ICON_SET_PICTURE (object);
+  GtkIconSetPicturePrivate *priv = icon_set->priv;
+
+  if (priv->set) {
+    gtk_icon_set_unref (priv->set);
+    priv->set = NULL;
+  }
+
+  G_OBJECT_CLASS (gtk_icon_set_picture_parent_class)->dispose (object);
+}
+
+static cairo_surface_t *
+gtk_icon_set_picture_ref_surface (GdkPicture *picture)
+{
+  GtkIconSetPicture *icon_set = GTK_ICON_SET_PICTURE (picture);
+
+  return gdk_picture_ref_surface (icon_set->priv->picture);
+}
+
+static void
+gtk_icon_set_picture_draw (GdkPicture *picture,
+                           cairo_t    *cr)
+{
+  GtkIconSetPicture *icon_set = GTK_ICON_SET_PICTURE (picture);
+
+  gdk_picture_draw (icon_set->priv->picture, cr);
+}
+
+static void
+gtk_icon_set_picture_class_init (GtkIconSetPictureClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+  GdkPictureClass *picture_class = GDK_PICTURE_CLASS (klass);
+
+  object_class->get_property = gtk_icon_set_picture_get_property;
+  object_class->set_property = gtk_icon_set_picture_set_property;
+  object_class->dispose = gtk_icon_set_picture_dispose;
+
+  picture_class->ref_surface = gtk_icon_set_picture_ref_surface;
+  picture_class->draw = gtk_icon_set_picture_draw;
+
+  /**
+   * GtkIconSetPicture:size:
+   *
+   * The #GtkIconSize to use to determine the actual image size.
+   *
+   * Since: 3.2
+   */
+  g_object_class_install_property (object_class,
+                                   PROP_SIZE,
+                                   g_param_spec_int ("size",
+                                                     P_("Size"),
+                                                     P_("Symbolic size to use"),
+                                                     G_MININT, G_MAXINT,
+                                                     GTK_ICON_SIZE_BUTTON,
+                                                     GTK_PARAM_READWRITE));
+
+  /**
+   * GtkIconSetPicture:icon-set:
+   *
+   * The icon set to display.
+   *
+   * Since: 3.2
+   */
+  g_object_class_install_property (object_class,
+                                   PROP_ICON_SET,
+                                   g_param_spec_boxed ("icon-set",
+                                                       P_("Icon set"),
+                                                       P_("Icon set to display"),
+                                                       GTK_TYPE_ICON_SET,
+                                                       GTK_PARAM_READWRITE));
+
+  g_type_class_add_private (klass, sizeof (GtkIconSetPicturePrivate));
+}
+
+static void
+gtk_icon_set_picture_resized_callback (GdkPicture *    pixbuf,
+                                   GtkIconSetPicture *icon_set)
+{
+  gdk_picture_resized (GDK_PICTURE (icon_set),
+                       gdk_picture_get_width (pixbuf),
+                       gdk_picture_get_height (pixbuf));
+}
+
+static void
+gtk_icon_set_picture_init (GtkIconSetPicture *picture)
+{
+  GtkIconSetPicturePrivate *priv;
+
+  picture->priv = G_TYPE_INSTANCE_GET_PRIVATE (picture,
+                                               GTK_TYPE_ICON_SET_PICTURE,
+                                               GtkIconSetPicturePrivate);
+
+  priv = picture->priv;
+  priv->size = GTK_ICON_SIZE_BUTTON;
+  priv->picture = gdk_pixbuf_picture_new (NULL);
+  g_signal_connect_swapped (priv->picture,
+                            "changed",
+                            G_CALLBACK (gdk_picture_changed_region),
+                            picture);
+  g_signal_connect (priv->picture,
+                    "resized",
+                    G_CALLBACK (gtk_icon_set_picture_resized_callback),
+                    picture);
+
+  gtk_icon_set_picture_update_picture (picture);
+}
+
+/**
+ * gtk_icon_set_picture_new:
+ * @icon_set_name: the name of the icon_set to display
+ * @size: The icon_set size to use or -1 for default
+ *
+ * Creates a new #GtkIconSetPicture displaying the given @icon_set.
+ *
+ * Returns: a new picture
+ **/
+GdkPicture *
+gtk_icon_set_picture_new (GtkIconSet *icon_set,
+                          GtkIconSize size)
+{
+  return g_object_new (GTK_TYPE_ICON_SET_PICTURE,
+                       "icon-set", icon_set,
+                       "size", size,
+                       NULL);
+}
+
+GtkIconSize
+gtk_icon_set_picture_get_size (GtkIconSetPicture *picture)
+{
+  g_return_val_if_fail (GTK_IS_ICON_SET_PICTURE (picture), -1);
+
+  return picture->priv->size;
+}
+
+void
+gtk_icon_set_picture_set_size (GtkIconSetPicture *picture,
+                           GtkIconSize     size)
+{
+  GtkIconSetPicturePrivate *priv;
+
+  g_return_if_fail (GTK_IS_ICON_SET_PICTURE (picture));
+
+  priv = picture->priv;
+
+  if (priv->size == size)
+    return;
+
+  priv->size = size;
+  
+  gtk_icon_set_picture_update_picture (picture);
+  g_object_notify (G_OBJECT (picture), "size");
+}
+
+GtkIconSet *
+gtk_icon_set_picture_get_icon_set (GtkIconSetPicture * picture)
+{
+  g_return_val_if_fail (GTK_IS_ICON_SET_PICTURE (picture), NULL);
+
+  return picture->priv->set;
+}
+
+void
+gtk_icon_set_picture_set_icon_set (GtkIconSetPicture *picture,
+                                   GtkIconSet *       icon_set)
+{
+  GtkIconSetPicturePrivate *priv;
+
+  g_return_if_fail (GTK_IS_ICON_SET_PICTURE (picture));
+
+  priv = picture->priv;
+
+  if (icon_set)
+    gtk_icon_set_ref (icon_set);
+
+  if (priv->set)
+    gtk_icon_set_ref (priv->set);
+  
+  priv->set = icon_set;
+
+  gtk_icon_set_picture_update_picture (picture);
+  g_object_notify (G_OBJECT (picture), "icon-set");
+}
+
diff --git a/gtk/gtkiconsetpicture.h b/gtk/gtkiconsetpicture.h
new file mode 100644
index 0000000..0d97af4
--- /dev/null
+++ b/gtk/gtkiconsetpicture.h
@@ -0,0 +1,67 @@
+/* GTK - The GIMP Drawing Kit
+ * Copyright (C) 2010 Benjamin Otte <otte gnome org>
+ *
+ * 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.
+ */
+
+#if !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
+#error "Only <gtk/gtk.h> can be included directly."
+#endif
+
+#ifndef __GTK_ICON_SET_PICTURE_H__
+#define __GTK_ICON_SET_PICTURE_H__
+
+#include <gtk/gtk.h>
+
+
+G_BEGIN_DECLS
+
+#define GTK_TYPE_ICON_SET_PICTURE              (gtk_icon_set_picture_get_type ())
+#define GTK_ICON_SET_PICTURE(o)                (G_TYPE_CHECK_INSTANCE_CAST ((o), GTK_TYPE_ICON_SET_PICTURE, GtkIconSetPicture))
+#define GTK_ICON_SET_PICTURE_CLASS(klass)      (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_ICON_SET_PICTURE, GtkIconSetPictureClass))
+#define GTK_IS_ICON_SET_PICTURE(object)        (G_TYPE_CHECK_INSTANCE_TYPE ((object), GTK_TYPE_ICON_SET_PICTURE))
+#define GTK_IS_ICON_SET_PICTURE_CLASS(klass)   (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_ICON_SET_PICTURE))
+#define GTK_ICON_SET_PICTURE_GET_CLASS(obj)    (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_ICON_SET_PICTURE, GtkIconSetPictureClass))
+
+typedef struct _GtkIconSetPicture        GtkIconSetPicture;
+typedef struct _GtkIconSetPicturePrivate GtkIconSetPicturePrivate;
+typedef struct _GtkIconSetPictureClass   GtkIconSetPictureClass;
+
+struct _GtkIconSetPicture {
+  GdkPicture                parent_picture;
+
+  GtkIconSetPicturePrivate *priv;
+};
+
+struct _GtkIconSetPictureClass {
+  GdkPictureClass           parent_class;
+};
+
+GType           gtk_icon_set_picture_get_type       (void) G_GNUC_CONST;
+
+GdkPicture *    gtk_icon_set_picture_new            (GtkIconSet *        icon_set,
+                                                     GtkIconSize         size);
+
+GtkIconSize     gtk_icon_set_picture_get_size       (GtkIconSetPicture * picture);
+void            gtk_icon_set_picture_set_size       (GtkIconSetPicture * picture,
+                                                     GtkIconSize         size);
+GtkIconSet *    gtk_icon_set_picture_get_icon_set   (GtkIconSetPicture * picture);
+void            gtk_icon_set_picture_set_icon_set   (GtkIconSetPicture * picture,
+                                                     GtkIconSet *        set);
+
+G_END_DECLS
+
+#endif /* __GTK_ICON_SET_PICTURE_H__ */
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