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()->CancelActiveTouchesExcept(window);
  29
  30   Window* old_capture_window = capture_window_;
  31   capture_window_ = window;
  32
  33   CaptureDelegate* capture_delegate = root_window_->GetHost()->dispatcher();
  34   if (capture_window_)
  35     capture_delegate->SetNativeCapture();
  36   else
  37     capture_delegate->ReleaseNativeCapture();
  38
  39   capture_delegate->UpdateCapture(old_capture_window, capture_window_);
  40 }
  41
  42 void DefaultCaptureClient::ReleaseCapture(Window* window) {
  43   if (capture_window_ != window)
  44     return;
  45   SetCapture(NULL);
  46 }
  47
  48 Window* DefaultCaptureClient::GetCaptureWindow() {
  49   return capture_window_;
  50 }
  51
  52 Window* DefaultCaptureClient::GetGlobalCaptureWindow() {
  53   return capture_window_;
  54 }
  55
  56 }  // namespace client
  57 }  // namespace aura