linux: unify all the dialog layout code for visual consistency.

chrome/common/gtk_util.cc

 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/common/gtk_util.h"
 
 #include <gtk/gtk.h>
 
 #include "base/linux_util.h"
 #include "third_party/skia/include/core/SkBitmap.h"
@@ skipping 36 matching lines @@
   gtk_alignment_set_padding(GTK_ALIGNMENT(alignment), top, bottom, left, right);
   gtk_container_add(GTK_CONTAINER(alignment), child);
   gtk_container_add(GTK_CONTAINER(ebox), alignment);
   return ebox;
 }
 
 void RemoveAllChildren(GtkWidget* container) {
   gtk_container_foreach(GTK_CONTAINER(container), RemoveWidget, container);
 }
 
+void InitRCStyles() {
+  static const char kRCText[] =
+      // Make our dialogs styled like the GNOME HIG.
+      // TODO(evanm): content-area-spacing doesn't seem to work -- maybe it
+      // was introduced in a later version of GTK?
+      "style \"gnome-dialog\" {\n"
+      "  xthickness = 12\n"
+      "  GtkDialog::action-area-border = 0\n"
+      "  GtkDialog::button-spacing = 6\n"
+      "  GtkDialog::content-area-spacing = 18\n"
+      "  GtkDialog::content-area-border = 12\n"
+      "}\n"
+      // Note we set it at the "application" priority, so users can override.
+      "widget \"GtkDialog\" style : application \"gnome-dialog\"\n"
+
+      // Make our about dialog special.
+      "style \"about-dialog\" {\n"
+      "  GtkDialog::action-area-border = 12\n"
+      "  GtkDialog::button-spacing = 6\n"
+      "  GtkDialog::content-area-spacing = 18\n"
+      "  GtkDialog::content-area-border = 0\n"
+      "}\n"
+      // Note we set it at the "application" priority, so users can override.
+      "widget \"about-dialog\" style : application \"about-dialog\"\n";
+
+  gtk_rc_parse_string(kRCText);
+}
+
 }  // namespace gtk_util