content: Split web_drag_dest_gtk.cc into chrome/ and content/ parts.

This patch doesn't move web_drag_dest_gtk.cc into content/, but does remove all
dependencies on chrome/ code.

- Split out a delegate interface and move it 
- cross platform code from chrome/.../bookmark_node_data.cc is moved to
  ui/.../bookmark_format.h
- gtk_util.cc has some layers split into gtk_screen_utils.cc.

BUG=none
TEST=none


Review URL: http://codereview.chromium.org/8196001

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@105216 0039d316-1c4b-4281-b951-d872f2087c98

3 files changed, 55 insertions, 0 deletions

diff --git a/ui/base/gtk/gtk_screen_utils.cc b/ui/base/gtk/gtk_screen_utils.cc
new file mode 100644
index 0000000..177b94c
--- /dev/null
+++ b/ui/base/gtk/gtk_screen_utils.cc
@@ -0,0 +1,27 @@
+// Copyright (c) 2011 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 "ui/base/gtk/gtk_screen_utils.h"
+
+namespace ui {
+
+bool IsScreenComposited() {
+  GdkScreen* screen = gdk_screen_get_default();
+  return gdk_screen_is_composited(screen) == TRUE;
+}
+
+gfx::Point ScreenPoint(GtkWidget* widget) {
+  int x, y;
+  gdk_display_get_pointer(gtk_widget_get_display(widget), NULL, &x, &y,
+                          NULL);
+  return gfx::Point(x, y);
+}
+
+gfx::Point ClientPoint(GtkWidget* widget) {
+  int x, y;
+  gtk_widget_get_pointer(widget, &x, &y);
+  return gfx::Point(x, y);
+}
+
+}  // namespace ui
diff --git a/ui/base/gtk/gtk_screen_utils.h b/ui/base/gtk/gtk_screen_utils.h
new file mode 100644
index 0000000..8262eb4
--- /dev/null
+++ b/ui/base/gtk/gtk_screen_utils.h
@@ -0,0 +1,26 @@
+// Copyright (c) 2011 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.
+
+#ifndef UI_BASE_GTK_GTK_SCREEN_UTILS_H_
+#define UI_BASE_GTK_GTK_SCREEN_UTILS_H_
+
+#include <gtk/gtk.h>
+
+#include "ui/base/ui_export.h"
+#include "ui/gfx/point.h"
+
+namespace ui {
+
+// Returns true if the screen is composited, false otherwise.
+UI_EXPORT bool IsScreenComposited();
+
+// Get the current location of the mouse cursor relative to the screen.
+UI_EXPORT gfx::Point ScreenPoint(GtkWidget* widget);
+
+// Get the current location of the mouse cursor relative to the widget.
+UI_EXPORT gfx::Point ClientPoint(GtkWidget* widget);
+
+}  // namespace ui
+
+#endif  // UI_BASE_GTK_GTK_SCREEN_UTILS_H_
diff --git a/ui/ui.gyp b/ui/ui.gyp
index b8b7de6..e69790e 100644
--- a/ui/ui.gyp
+++ b/ui/ui.gyp
@@ -113,6 +113,8 @@
         'base/gtk/gtk_im_context_util.cc',
         'base/gtk/gtk_im_context_util.h',
         'base/gtk/gtk_hig_constants.h',
+        'base/gtk/gtk_screen_utils.cc',
+        'base/gtk/gtk_screen_utils.h',
         'base/gtk/gtk_signal.h',
         'base/gtk/gtk_signal_registrar.cc',
         'base/gtk/gtk_signal_registrar.h',