Uses X mechanisms to get the screen size.

views/screen_gtk.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 "views/screen.h"
 
+#include <gdk/gdkx.h>
 #include <gtk/gtk.h>
 
 #include "base/logging.h"
 
 namespace views {
 
 // static
 gfx::Point Screen::GetCursorScreenPoint() {
   gint x, y;
   gdk_display_get_pointer(gdk_display_get_default(), NULL, &x, &y, NULL);
   return gfx::Point(x, y);
 }
 
 gfx::Rect static GetPrimaryMonitorBounds() {
   guchar* raw_data = NULL;
   gint data_len = 0;
   gboolean success = gdk_property_get(gdk_get_default_root_window(),
                                       gdk_atom_intern("_NET_WORKAREA", FALSE),
                                       gdk_atom_intern("CARDINAL", FALSE),
                                       0, 0xFF, false, NULL, NULL, &data_len,
                                       &raw_data);
+  int top_left_x = 0;
+  int top_left_y = 0;
+  int width = 0;
+  int height = 0;
+
+  if (success) {
+    glong* data = reinterpret_cast<glong*>(raw_data);
+    top_left_x = data[0];
+    top_left_y = data[1];
+    width = data[2];
+    height = data[3];
+  } else {
+#if defined(OS_LINUX)

[sky, 2009/12/09 16:34:34]

This file is only compiled on linux, so no need for the ifdef.

[Chris Masone, 2009/12/09 17:09:50]

fixed and committed

+    // If there's no window manager, we can ask X for Monitor info directly.
+    XWindowAttributes attributes;
+    Status status = XGetWindowAttributes(gdk_x11_get_default_xdisplay(),
+                                         gdk_x11_get_default_root_xwindow(),
+                                         &attributes);
+    if (status) {
+      top_left_x = attributes.x;
+      top_left_y = attributes.y;
+      width = attributes.width;
+      height = attributes.height;
+      success = true;
+    }
+#endif
+  }
   DCHECK(success);
-  glong* data = reinterpret_cast<glong*>(raw_data);
-  return gfx::Rect(data[0], data[1], data[0] + data[2], data[1] + data[3]);
+  return gfx::Rect(top_left_x, top_left_y, width, height);
 }
 
 // static
 gfx::Rect Screen::GetMonitorWorkAreaNearestWindow(gfx::NativeView view) {
   // TODO(beng): use |view|.
   return GetPrimaryMonitorBounds();
 }
 
 // static
 gfx::Rect Screen::GetMonitorAreaNearestWindow(gfx::NativeView view) {
@@ skipping 26 matching lines @@
   gdk_window_get_user_data(window, &data);
   GtkWidget* widget = reinterpret_cast<GtkWidget*>(data);
   if (!widget)
     return NULL;
   widget = gtk_widget_get_toplevel(widget);
   return GTK_IS_WINDOW(widget) ? GTK_WINDOW(widget) : NULL;
 }
 
 }  // namespace