Fix maximized mode drawing offscreen in Classic mode. Apparently Classic, un...

chrome/views/custom_frame_window.cc

 // Copyright (c) 2006-2008 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 "chrome/views/custom_frame_window.h"
 
 #include "base/gfx/point.h"
 #include "base/gfx/size.h"
 #include "base/win_util.h"
 #include "chrome/app/theme/theme_resources.h"
@@ skipping 1301 matching lines @@
   SetWindowLong(GetHWND(), GWL_STYLE, saved_window_style_);
   lock_updates_ = false;
 }
 
 void CustomFrameWindow::ResetWindowRegion() {
   // Changing the window region is going to force a paint. Only change the
   // window region if the region really differs.
   HRGN current_rgn = CreateRectRgn(0, 0, 0, 0);
   int current_rgn_result = GetWindowRgn(GetHWND(), current_rgn);
 
-  HRGN new_region = NULL;
-  if (!IsMaximized()) {
-    CRect window_rect;
-    GetWindowRect(&window_rect);
+  CRect window_rect;
+  GetWindowRect(&window_rect);
+  HRGN new_region;
+  if (IsMaximized()) {
+    HMONITOR monitor = MonitorFromWindow(GetHWND(), MONITOR_DEFAULTTONEAREST);
+    MONITORINFO mi;
+    mi.cbSize = sizeof mi;
+    GetMonitorInfo(monitor, &mi);
+    CRect work_rect = mi.rcWork;
+    work_rect.OffsetRect(-window_rect.left, -window_rect.top);
+    new_region = CreateRectRgnIndirect(&work_rect);
+  } else {
     gfx::Path window_mask;
     non_client_view_->GetWindowMask(gfx::Size(window_rect.Width(),
                                               window_rect.Height()),
                                     &window_mask);
     new_region = window_mask.CreateHRGN();
   }
 
-  if (current_rgn_result == ERROR ||
-      !EqualRgn(current_rgn, new_region)) {
+  if (current_rgn_result == ERROR || !EqualRgn(current_rgn, new_region)) {
     // SetWindowRgn takes ownership of the HRGN created by CreateHRGN.
     SetWindowRgn(new_region, TRUE);
-  } else if (new_region) {
+  } else {
     DeleteObject(new_region);
   }
 
   DeleteObject(current_rgn);
 }
 
 void CustomFrameWindow::ProcessNCMousePress(const CPoint& point, int flags) {
   CPoint temp = point;
   MapWindowPoints(HWND_DESKTOP, GetHWND(), &temp, 1);
   UINT message_flags = 0;
   if ((GetKeyState(VK_CONTROL) & 0x80) == 0x80)
     message_flags |= MK_CONTROL;
   if ((GetKeyState(VK_SHIFT) & 0x80) == 0x80)
     message_flags |= MK_SHIFT;
   message_flags |= flags;
   ProcessMousePressed(temp, message_flags, false);
 }
 
 }  // namespace views