ui/base/idle/idle_query_x11.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "ui/base/idle/idle_query_x11.h"
   6
   7 #include <X11/extensions/scrnsaver.h>
   8
   9 #include "ui/gfx/x/x11_types.h"
  10
  11 namespace ui {
  12
  13 class IdleData {
  14  public:
  15   IdleData() {
  16     int event_base;
  17     int error_base;
  18     if (XScreenSaverQueryExtension(gfx::GetXDisplay(), &event_base,
  19                                    &error_base)) {
  20       mit_info.reset(XScreenSaverAllocInfo());
  21     }
  22   }
  23
  24   ~IdleData() {
  25   }
  26
  27   gfx::XScopedPtr<XScreenSaverInfo> mit_info;
  28 };
  29
  30 IdleQueryX11::IdleQueryX11() : idle_data_(new IdleData()) {}
  31
  32 IdleQueryX11::~IdleQueryX11() {}
  33
  34 int IdleQueryX11::IdleTime() {
  35   if (!idle_data_->mit_info)
  36     return 0;
  37
  38   if (XScreenSaverQueryInfo(gfx::GetXDisplay(),
  39                             RootWindow(gfx::GetXDisplay(), 0),
  40                             idle_data_->mit_info.get())) {
  41     return (idle_data_->mit_info->idle) / 1000;
  42   } else {
  43     return 0;
  44   }
  45 }
  46
  47 }  // namespace ui