chrome/browser/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 "chrome/browser/idle_query_x11.h"
   6
   7 #include <X11/extensions/scrnsaver.h>
   8 #include "ui/gfx/x/x11_types.h"
   9
  10 namespace chrome {
  11
  12 class IdleData {
  13  public:
  14   IdleData() {
  15     int event_base;
  16     int error_base;
  17     if (XScreenSaverQueryExtension(gfx::GetXDisplay(), &event_base,
  18                                    &error_base)) {
  19       mit_info = XScreenSaverAllocInfo();
  20     } else {
  21       mit_info = NULL;
  22     }
  23   }
  24
  25   ~IdleData() {
  26     if (mit_info)
  27       XFree(mit_info);
  28   }
  29
  30   XScreenSaverInfo *mit_info;
  31 };
  32
  33 IdleQueryX11::IdleQueryX11() : idle_data_(new IdleData()) {}
  34
  35 IdleQueryX11::~IdleQueryX11() {}
  36
  37 int IdleQueryX11::IdleTime() {
  38   if (!idle_data_->mit_info)
  39     return 0;
  40
  41   if (XScreenSaverQueryInfo(gfx::GetXDisplay(),
  42                             RootWindow(gfx::GetXDisplay(), 0),
  43                             idle_data_->mit_info)) {
  44     return (idle_data_->mit_info->idle) / 1000;
  45   } else {
  46     return 0;
  47   }
  48 }
  49
  50 }  // namespace chrome