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/views/win/scoped_fullscreen_visibility.h" 6 7 #include "base/logging.h" 8 9 namespace views { 10 11 // static 12 std::map<HWND, int>* ScopedFullscreenVisibility::full_screen_windows_ = NULL; 13 14 ScopedFullscreenVisibility::ScopedFullscreenVisibility(HWND hwnd) 15 : hwnd_(hwnd) { 16 if (!full_screen_windows_) 17 full_screen_windows_ = new FullscreenHWNDs; 18 FullscreenHWNDs::iterator it = full_screen_windows_->find(hwnd_); 19 if (it != full_screen_windows_->end()) { 20 it->second++; 21 } else { 22 full_screen_windows_->insert(std::make_pair(hwnd_, 1)); 23 // NOTE: Be careful not to activate any windows here (for example, calling 24 // ShowWindow(SW_HIDE) will automatically activate another window). This 25 // code can be called while a window is being deactivated, and activating 26 // another window will screw up the activation that is already in progress. 27 SetWindowPos(hwnd_, NULL, 0, 0, 0, 0, 28 SWP_HIDEWINDOW | SWP_NOACTIVATE | SWP_NOMOVE | 29 SWP_NOREPOSITION | SWP_NOSIZE | SWP_NOZORDER); 30 } 31 } 32 33 ScopedFullscreenVisibility::~ScopedFullscreenVisibility() { 34 FullscreenHWNDs::iterator it = full_screen_windows_->find(hwnd_); 35 DCHECK(it != full_screen_windows_->end()); 36 if (--it->second == 0) { 37 full_screen_windows_->erase(it); 38 ShowWindow(hwnd_, SW_SHOW); 39 } 40 if (full_screen_windows_->empty()) { 41 delete full_screen_windows_; 42 full_screen_windows_ = NULL; 43 } 44 } 45 46 // static 47 bool ScopedFullscreenVisibility::IsHiddenForFullscreen(HWND hwnd) { 48 if (!full_screen_windows_) 49 return false; 50 return full_screen_windows_->find(hwnd) != full_screen_windows_->end(); 51 } 52 53 } // namespace views 54
