Move Fullscreen stuff onto FullscreenHandler type that hangs off NWW. This is the first step in mov…

ui/views/win/fullscreen_handler.cc

+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "ui/views/win/fullscreen_handler.h"
+
+#include "base/logging.h"
+// TODO(beng): Temporary dependancy until fullscreen moves to
+//             HWNDMessageHandler.
+#include "ui/views/widget/widget.h"
+#include "ui/views/win/scoped_fullscreen_visibility.h"
+
+namespace views {
+
+////////////////////////////////////////////////////////////////////////////////
+// FullscreenHandler, public:
+
+FullscreenHandler::FullscreenHandler(Widget* widget)
+    : widget_(widget),
+      fullscreen_(false),
+      metro_snap_(false) {
+}
+
+FullscreenHandler::~FullscreenHandler() {
+}
+
+void FullscreenHandler::SetFullscreen(bool fullscreen) {
+  if (fullscreen_ == fullscreen)
+    return;
+
+  SetFullscreenImpl(fullscreen, false);
+}
+
+void FullscreenHandler::SetMetroSnap(bool metro_snap) {
+  if (metro_snap_ == metro_snap)
+    return;
+
+  SetFullscreenImpl(metro_snap, true);
+  metro_snap_ = metro_snap;
+}
+
+gfx::Rect FullscreenHandler::GetRestoreBounds() const {
+  return gfx::Rect(saved_window_info_.window_rect);
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// FullscreenHandler, private:
+
+void FullscreenHandler::SetFullscreenImpl(bool fullscreen, bool for_metro) {
+  ScopedFullscreenVisibility visibility(widget_->GetNativeView());
+
+  // Save current window state if not already fullscreen.
+  if (!fullscreen_) {
+    // Save current window information.  We force the window into restored mode
+    // before going fullscreen because Windows doesn't seem to hide the
+    // taskbar if the window is in the maximized state.
+    saved_window_info_.maximized = widget_->IsMaximized();
+    if (saved_window_info_.maximized)
+      widget_->Restore();
+    saved_window_info_.style =
+        GetWindowLong(widget_->GetNativeView(), GWL_STYLE);
+    saved_window_info_.ex_style =
+        GetWindowLong(widget_->GetNativeView(), GWL_EXSTYLE);
+    GetWindowRect(widget_->GetNativeView(), &saved_window_info_.window_rect);
+  }
+
+  fullscreen_ = fullscreen;
+
+  if (fullscreen_) {
+    // Set new window style and size.
+    SetWindowLong(widget_->GetNativeView(), GWL_STYLE,
+                  saved_window_info_.style & ~(WS_CAPTION | WS_THICKFRAME));
+    SetWindowLong(widget_->GetNativeView(), GWL_EXSTYLE,
+                  saved_window_info_.ex_style & ~(WS_EX_DLGMODALFRAME |
+                  WS_EX_WINDOWEDGE | WS_EX_CLIENTEDGE | WS_EX_STATICEDGE));
+
+    // On expand, if we're given a window_rect, grow to it, otherwise do
+    // not resize.
+    if (!for_metro) {
+      MONITORINFO monitor_info;
+      monitor_info.cbSize = sizeof(monitor_info);
+      GetMonitorInfo(MonitorFromWindow(widget_->GetNativeView(),
+                                       MONITOR_DEFAULTTONEAREST),
+                     &monitor_info);
+      gfx::Rect window_rect(monitor_info.rcMonitor);
+      SetWindowPos(widget_->GetNativeView(), NULL,
+                   window_rect.x(), window_rect.y(),
+                   window_rect.width(), window_rect.height(),
+                   SWP_NOZORDER | SWP_NOACTIVATE | SWP_FRAMECHANGED);
+    }
+  } else {
+    // Reset original window style and size.  The multiple window size/moves
+    // here are ugly, but if SetWindowPos() doesn't redraw, the taskbar won't be
+    // repainted.  Better-looking methods welcome.
+    SetWindowLong(widget_->GetNativeView(), GWL_STYLE,
+                  saved_window_info_.style);
+    SetWindowLong(widget_->GetNativeView(), GWL_EXSTYLE,
+                  saved_window_info_.ex_style);
+
+    if (!for_metro) {
+      // On restore, resize to the previous saved rect size.
+      gfx::Rect new_rect(saved_window_info_.window_rect);
+      SetWindowPos(widget_->GetNativeView(), NULL,
+                   new_rect.x(), new_rect.y(),
+                   new_rect.width(), new_rect.height(),
+                   SWP_NOZORDER | SWP_NOACTIVATE | SWP_FRAMECHANGED);
+    }
+    if (saved_window_info_.maximized)
+      widget_->Maximize();
+  }
+}
+
+}  // namespace views