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 = XScreenSaverAllocInfo();
  21     } else {
  22       mit_info = NULL;
  23     }
  24   }
  25
  26   ~IdleData() {
  27     if (mit_info)
  28       XFree(mit_info);
  29   }
  30
  31   XScreenSaverInfo *mit_info;
  32 };
  33
  34 IdleQueryX11::IdleQueryX11() : idle_data_(new IdleData()) {}
  35
  36 IdleQueryX11::~IdleQueryX11() {}
  37
  38 int IdleQueryX11::IdleTime() {
  39   if (!idle_data_->mit_info)
  40     return 0;
  41
  42   if (XScreenSaverQueryInfo(gfx::GetXDisplay(),
  43                             RootWindow(gfx::GetXDisplay(), 0),
  44                             idle_data_->mit_info)) {
  45     return (idle_data_->mit_info->idle) / 1000;
  46   } else {
  47     return 0;
  48   }
  49 }
  50
  51 }  // namespace ui