ui/views/win/fullscreen_handler.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/views/win/fullscreen_handler.h"
   6
   7 #include "base/logging.h"
   8 #include "base/win/win_util.h"
   9 #include "ui/gfx/geometry/rect.h"
  10 #include "ui/views/win/scoped_fullscreen_visibility.h"
  11
  12 namespace views {
  13
  14 ////////////////////////////////////////////////////////////////////////////////
  15 // FullscreenHandler, public:
  16
  17 FullscreenHandler::FullscreenHandler()
  18     : hwnd_(NULL),
  19       fullscreen_(false),
  20       metro_snap_(false) {
  21 }
  22
  23 FullscreenHandler::~FullscreenHandler() {
  24 }
  25
  26 void FullscreenHandler::SetFullscreen(bool fullscreen) {
  27   if (fullscreen_ == fullscreen)
  28     return;
  29
  30   SetFullscreenImpl(fullscreen, false);
  31 }
  32
  33 void FullscreenHandler::SetMetroSnap(bool metro_snap) {
  34   if (metro_snap_ == metro_snap)
  35     return;
  36
  37   SetFullscreenImpl(metro_snap, true);
  38   metro_snap_ = metro_snap;
  39 }
  40
  41 gfx::Rect FullscreenHandler::GetRestoreBounds() const {
  42   return gfx::Rect(saved_window_info_.window_rect);
  43 }
  44
  45 ////////////////////////////////////////////////////////////////////////////////
  46 // FullscreenHandler, private:
  47
  48 void FullscreenHandler::SetFullscreenImpl(bool fullscreen, bool for_metro) {
  49   ScopedFullscreenVisibility visibility(hwnd_);
  50
  51   // Save current window state if not already fullscreen.
  52   if (!fullscreen_) {
  53     // Save current window information.  We force the window into restored mode
  54     // before going fullscreen because Windows doesn't seem to hide the
  55     // taskbar if the window is in the maximized state.
  56     saved_window_info_.maximized = !!::IsZoomed(hwnd_);
  57     if (saved_window_info_.maximized)
  58       ::SendMessage(hwnd_, WM_SYSCOMMAND, SC_RESTORE, 0);
  59     saved_window_info_.style = GetWindowLong(hwnd_, GWL_STYLE);
  60     saved_window_info_.ex_style = GetWindowLong(hwnd_, GWL_EXSTYLE);
  61     GetWindowRect(hwnd_, &saved_window_info_.window_rect);
  62   }
  63
  64   fullscreen_ = fullscreen;
  65
  66   if (fullscreen_) {
  67     // Set new window style and size.
  68     SetWindowLong(hwnd_, GWL_STYLE,
  69                   saved_window_info_.style & ~(WS_CAPTION | WS_THICKFRAME));
  70     SetWindowLong(hwnd_, GWL_EXSTYLE,
  71                   saved_window_info_.ex_style & ~(WS_EX_DLGMODALFRAME |
  72                   WS_EX_WINDOWEDGE | WS_EX_CLIENTEDGE | WS_EX_STATICEDGE));
  73
  74     // On expand, if we're given a window_rect, grow to it, otherwise do
  75     // not resize.
  76     if (!for_metro) {
  77       MONITORINFO monitor_info;
  78       monitor_info.cbSize = sizeof(monitor_info);
  79       GetMonitorInfo(MonitorFromWindow(hwnd_, MONITOR_DEFAULTTONEAREST),
  80                      &monitor_info);
  81       gfx::Rect window_rect(monitor_info.rcMonitor);
  82       SetWindowPos(hwnd_, NULL, window_rect.x(), window_rect.y(),
  83                    window_rect.width(), window_rect.height(),
  84                    SWP_NOZORDER | SWP_NOACTIVATE | SWP_FRAMECHANGED);
  85     }
  86   } else {
  87     // Reset original window style and size.  The multiple window size/moves
  88     // here are ugly, but if SetWindowPos() doesn't redraw, the taskbar won't be
  89     // repainted.  Better-looking methods welcome.
  90     SetWindowLong(hwnd_, GWL_STYLE, saved_window_info_.style);
  91     SetWindowLong(hwnd_, GWL_EXSTYLE, saved_window_info_.ex_style);
  92
  93     if (!for_metro) {
  94       // On restore, resize to the previous saved rect size.
  95       gfx::Rect new_rect(saved_window_info_.window_rect);
  96       SetWindowPos(hwnd_, NULL, new_rect.x(), new_rect.y(),
  97                    new_rect.width(), new_rect.height(),
  98                    SWP_NOZORDER | SWP_NOACTIVATE | SWP_FRAMECHANGED);
  99     }
 100     if (saved_window_info_.maximized)
 101       ::SendMessage(hwnd_, WM_SYSCOMMAND, SC_MAXIMIZE, 0);
 102   }
 103 }
 104
 105 }  // namespace views