ui/aura/client/default_capture_client.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/aura/client/default_capture_client.h"
   6
   7 #include "ui/aura/window.h"
   8 #include "ui/aura/window_event_dispatcher.h"
   9 #include "ui/aura/window_tree_host.h"
  10
  11 namespace aura {
  12 namespace client {
  13
  14 DefaultCaptureClient::DefaultCaptureClient(Window* root_window)
  15     : root_window_(root_window),
  16       capture_window_(NULL) {
  17   SetCaptureClient(root_window_, this);
  18 }
  19
  20 DefaultCaptureClient::~DefaultCaptureClient() {
  21   SetCaptureClient(root_window_, NULL);
  22 }
  23
  24 void DefaultCaptureClient::SetCapture(Window* window) {
  25   if (capture_window_ == window)
  26     return;
  27   if (window) {
  28     ui::GestureRecognizer::Get()->TransferEventsTo(
  29         capture_window_, window);
  30   }
  31
  32   Window* old_capture_window = capture_window_;
  33   capture_window_ = window;
  34
  35   CaptureDelegate* capture_delegate = root_window_->GetHost()->dispatcher();
  36   if (capture_window_)
  37     capture_delegate->SetNativeCapture();
  38   else
  39     capture_delegate->ReleaseNativeCapture();
  40
  41   capture_delegate->UpdateCapture(old_capture_window, capture_window_);
  42 }
  43
  44 void DefaultCaptureClient::ReleaseCapture(Window* window) {
  45   if (capture_window_ != window)
  46     return;
  47   SetCapture(NULL);
  48 }
  49
  50 Window* DefaultCaptureClient::GetCaptureWindow() {
  51   return capture_window_;
  52 }
  53
  54 Window* DefaultCaptureClient::GetGlobalCaptureWindow() {
  55   return capture_window_;
  56 }
  57
  58 }  // namespace client
  59 }  // namespace aura