Linux: move X operations from the IO to UI2 thread.

chrome/common/x11_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.
 
 // This file defines utility functions for X11 (Linux only). This code has been
 // ported from XCB since we can't use XCB on Ubuntu while its 32-bit support
 // remains woefully incomplete.
 
+#include "base/thread.h"
 #include "chrome/common/x11_util.h"
 #include "chrome/common/x11_util_internal.h"
 
 #include <string.h>
 
 #include <gdk/gdk.h>
 #include <gdk/gdkx.h>
 #include <gtk/gtk.h>
 
 #include <sys/ipc.h>
@@ skipping 72 matching lines @@
 
   // We don't care about the version of Xrender since all the features which
   // we use are included in every version.
   int dummy;
   render_supported = XRenderQueryExtension(dpy, &dummy, &dummy);
   render_supported_cached = true;
 
   return render_supported;
 }
 
+int GetDefaultScreen(Display* display) {
+  return XDefaultScreen(display);
+}
+
 XID GetX11RootWindow() {
   return GDK_WINDOW_XID(gdk_get_default_root_window());
 }
 
 XID GetX11WindowFromGtkWidget(GtkWidget* widget) {
   return GDK_WINDOW_XID(widget->window);
 }
 
+XID GetX11WindowFromGdkWindow(GdkWindow* window) {
+  return GDK_WINDOW_XID(window);
+}
+
 void* GetVisualFromGtkWidget(GtkWidget* widget) {
   return GDK_VISUAL_XVISUAL(gtk_widget_get_visual(widget));
 }
 
 int BitsPerPixelForPixmapDepth(Display* dpy, int depth) {
   int count;
   XPixmapFormatValues* formats = XListPixmapFormats(dpy, &count);
   if (!formats)
     return -1;
 
@@ skipping 93 matching lines @@
 }
 
 void FreePicture(Display* display, XID picture) {
   XRenderFreePicture(display, picture);
 }
 
 void FreePixmap(Display* display, XID pixmap) {
   XFreePixmap(display, pixmap);
 }
 
+// Called on BACKGROUND_X11 thread.
+Display* GetSecondaryDisplay() {
+  static Display* display = NULL;
+  if (!display) {
+    display = XOpenDisplay(NULL);
+    CHECK(display);
+  }
+
+  return display;
+}
+
+// Called on BACKGROUND_X11 thread.
+void GetWindowGeometry(int* x, int* y, unsigned* width, unsigned* height,
+                       XID window) {
+  Window root_window;
+  unsigned border_width, depth;
+
+  CHECK(XGetGeometry(GetSecondaryDisplay(), window,
+                     &root_window, x, y, width, height, &border_width, &depth));
+}
+
 }  // namespace x11_util