Add a custom cell renderer for metatheme names to allow rounded corners on

2008-04-14  Thomas Wood  <thos@gnome.org>

	* Makefile.am:
	* appearance-themes.c: (themes_init):
	* caption-cellrenderer.c:
	* caption-cellrenderer.h:

	Add a custom cell renderer for metatheme names to allow rounded corners
	on the selection indicator. Fixes bug 500276.

svn path=/trunk/; revision=8652

capplets/appearance/ChangeLog

@@ -1,3 +1,13 @@
+2008-04-14  Thomas Wood  <thos@gnome.org>
+
+	* Makefile.am:
+	* appearance-themes.c: (themes_init):
+	* caption-cellrenderer.c:
+	* caption-cellrenderer.h:
+
+	Add a custom cell renderer for metatheme names to allow rounded corners
+	on the selection indicator. Fixes bug 500276.
+
 2008-04-13  Jens Granseuer  <jensgr@gmx.net>
 
 	* appearance-desktop.c: (wp_option_menu_set),

capplets/appearance/Makefile.am

@@ -33,7 +33,9 @@ gnome_appearance_properties_SOURCES = \
 	theme-util.c \
 	theme-util.h \
 	wp-cellrenderer.c \
-	wp-cellrenderer.h
+	wp-cellrenderer.h \
+	caption-cellrenderer.c \
+	caption-cellrenderer.h
 
 gnome_appearance_properties_LDADD = \
 	$(top_builddir)/libwindow-settings/libgnome-window-settings.la \

capplets/appearance/appearance-themes.c

@@ -28,6 +28,7 @@
 #include "gtkrc-utils.h"
 #include "gedit-message-area.h"
 #include "wp-cellrenderer.h"
+#include "caption-cellrenderer.h"
 
 #include <glib/gi18n.h>
 #include <libwindow-settings/gnome-wm-manager.h>
@@ -1039,7 +1040,7 @@ themes_init (AppearanceData *data)
   gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (icon_view), renderer,
                                   "pixbuf", COL_THUMBNAIL, NULL);
 
-  renderer = gtk_cell_renderer_text_new ();
+  renderer = cell_renderer_caption_new ();
   g_object_set (renderer, "alignment", PANGO_ALIGN_CENTER,
 			  "wrap-mode", PANGO_WRAP_WORD_CHAR,
 			  "wrap-width", gtk_icon_view_get_item_width (icon_view),

capplets/appearance/caption-cellrenderer.c

@@ -0,0 +1,114 @@
+/*
+ * caption-cellrenderer was based on wp-cellrenderer
+ *
+ * Copyright (C) 2007, 2008 The GNOME Foundation
+ * Written by Denis Washington <denisw@svn.gnome.org>
+ *            Jens Granseuer <jensgr@gmx.net>
+ *            Thomas Wood <thos@gnome.org>
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "caption-cellrenderer.h"
+#include <math.h>
+
+static void cell_renderer_caption_render (GtkCellRenderer *cell,
+                                            GdkWindow *window,
+                                            GtkWidget *widget,
+                                            GdkRectangle *background_area,
+                                            GdkRectangle *cell_area,
+                                            GdkRectangle *expose_area,
+                                            GtkCellRendererState flags);
+
+G_DEFINE_TYPE (CellRendererCaption, cell_renderer_caption, GTK_TYPE_CELL_RENDERER_TEXT)
+
+static void
+cell_renderer_caption_class_init (CellRendererCaptionClass *klass)
+{
+  GtkCellRendererClass *renderer_class;
+
+  renderer_class = (GtkCellRendererClass *) klass;
+  renderer_class->render = cell_renderer_caption_render;
+}
+
+static void
+cell_renderer_caption_init (CellRendererCaption *renderer)
+{
+
+}
+
+GtkCellRenderer *
+cell_renderer_caption_new (void)
+{
+  return g_object_new (cell_renderer_caption_get_type (), NULL);
+}
+
+static void
+cell_renderer_caption_render (GtkCellRenderer *cell,
+                                GdkWindow *window,
+                                GtkWidget *widget,
+                                GdkRectangle *background_area,
+                                GdkRectangle *cell_area,
+                                GdkRectangle *expose_area,
+                                GtkCellRendererState flags)
+{
+  (* GTK_CELL_RENDERER_CLASS (cell_renderer_caption_parent_class)->render)
+      (cell, window, widget, background_area, cell_area, expose_area, flags);
+
+  if ((flags & (GTK_CELL_RENDERER_SELECTED|GTK_CELL_RENDERER_PRELIT)) != 0)
+  {
+    cairo_t *cr;
+    int radius = 5;
+    int x, y, w, h;
+    GtkStateType state;
+    x = background_area->x;
+    y = background_area->y;
+    w = background_area->width;
+    h = background_area->height;
+
+    /* sometimes width is -1 - not sure what to do here */
+    if (w == -1)
+      return;
+
+    if ((flags & GTK_CELL_RENDERER_SELECTED) != 0)
+    {
+      if (GTK_WIDGET_HAS_FOCUS (widget))
+        state = GTK_STATE_SELECTED;
+      else
+        state = GTK_STATE_ACTIVE;
+    }
+    else
+      state = GTK_STATE_PRELIGHT;
+
+    /* add rounded corners to the selection indicator */
+    cr = gdk_cairo_create (GDK_DRAWABLE (window));
+
+    gdk_cairo_set_source_color (cr, &widget->style->base[GTK_STATE_NORMAL]);
+
+    cairo_rectangle (cr, x, y, w, h);
+
+    cairo_arc (cr, x + radius, y + radius, radius, M_PI, M_PI * 1.5);
+    cairo_arc (cr, x + w - radius, y + radius, radius, M_PI * 1.5, 0);
+    cairo_arc (cr, x + w - radius, y + h - radius, radius, 0, M_PI * 0.5);
+    cairo_arc (cr, x + radius, y + h - radius, radius, M_PI * 0.5, M_PI);
+    cairo_close_path (cr);
+
+    cairo_set_fill_rule (cr, CAIRO_FILL_RULE_EVEN_ODD);
+
+    cairo_fill (cr);
+    cairo_destroy (cr);
+  }
+}

capplets/appearance/caption-cellrenderer.h

@@ -0,0 +1,47 @@
+/*
+ * caption-cellrenderer was based on wp-cellrenderer
+ *
+ * Copyright (C) 2007, 2008 The GNOME Foundation
+ * Written by Denis Washington <denisw@svn.gnome.org>
+ *            Thomas Wood <thos@gnome.org>
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+#ifndef _CAPTION_CELL_RENDERER_H
+#define _CAPTION_CELL_RENDERER_H
+
+#include <gtk/gtk.h>
+
+G_BEGIN_DECLS
+
+typedef struct _CellRendererCaption       CellRendererCaption;
+typedef struct _CellRendererCaptionClass  CellRendererCaptionClass;
+
+struct _CellRendererCaption
+{
+	GtkCellRendererText parent;
+};
+
+struct _CellRendererCaptionClass
+{
+	GtkCellRendererTextClass parent;
+};
+
+GtkCellRenderer *cell_renderer_caption_new (void);
+
+G_END_DECLS
+
+#endif