linux_aura: Improve window drag performance.

ui/base/x/x11_util.cc

 // Copyright (c) 2012 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 "ui/base/x/x11_util.h"
 
 #include <ctype.h>
 #include <sys/ipc.h>
 #include <sys/shm.h>
 
 #include <list>
 #include <map>
 #include <utility>
 #include <vector>
 
 #include <X11/extensions/shape.h>
 #include <X11/extensions/XInput2.h>
 
 #include "base/bind.h"
 #include "base/command_line.h"
+#include "base/debug/trace_event.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/singleton.h"
 #include "base/message_loop/message_loop.h"
 #include "base/metrics/histogram.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/sys_byteorder.h"
 #include "base/threading/thread.h"
@@ skipping 544 matching lines @@
   GC gc = XCreateGC(display, root_window, GCForeground, &gc_values);
   XFillRectangle(display, root_window, gc,
                  root_bounds.x(),
                  root_bounds.y(),
                  root_bounds.width(),
                  root_bounds.height());
   XFreeGC(display, gc);
 }
 
 bool IsWindowVisible(XID window) {
+  TRACE_EVENT0("ui", "IsWindowVisible");
+
   XWindowAttributes win_attributes;
   if (!XGetWindowAttributes(gfx::GetXDisplay(), window, &win_attributes))
     return false;
   if (win_attributes.map_state != IsViewable)
     return false;
   // Some compositing window managers (notably kwin) do not actually unmap
   // windows on desktop switch, so we also must check the current desktop.
   int window_desktop, current_desktop;
   return (!GetWindowDesktop(window, &window_desktop) ||
           !GetCurrentDesktop(&current_desktop) ||
@@ skipping 14 matching lines @@
   if (!XTranslateCoordinates(gfx::GetXDisplay(), window, root,
                              0, 0, &x, &y, &child))
     return false;
 
   *rect = gfx::Rect(x, y, width, height);
   return true;
 }
 
 
 bool WindowContainsPoint(XID window, gfx::Point screen_loc) {
+  TRACE_EVENT0("ui", "WindowContainsPoint");
+
   gfx::Rect window_rect;
   if (!GetWindowRect(window, &window_rect))
     return false;
 
   if (!window_rect.Contains(screen_loc))
     return false;
 
   if (!IsShapeAvailable())
     return true;
 
@@ skipping 850 matching lines @@
       << "request_code " << static_cast<int>(error_event.request_code) << ", "
       << "minor_code " << static_cast<int>(error_event.minor_code)
       << " (" << request_str << ")";
 }
 
 // ----------------------------------------------------------------------------
 // End of x11_util_internal.h
 
 
 }  // namespace ui