Improve scrolling performance when there are many windowed plugins in a page....

webkit/tools/test_shell/test_webview_delegate.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.
 
 // This file contains the implementation of TestWebViewDelegate, which serves
 // as the WebViewDelegate for the TestShellWebHost.  The host is expected to
 // have initialized a MessageLoop before these methods are called.
 
 #include "webkit/tools/test_shell/test_webview_delegate.h"
 
@@ skipping 11 matching lines @@
 #include "webkit/glue/weburlrequest.h"
 #include "webkit/glue/webkit_glue.h"
 #include "webkit/glue/webview.h"
 #include "webkit/glue/plugins/plugin_list.h"
 #include "webkit/glue/window_open_disposition.h"
 #include "webkit/tools/test_shell/test_navigation_controller.h"
 #include "webkit/tools/test_shell/test_shell.h"
 
 #if defined(OS_WIN)
 // TODO(port): make these files work everywhere.
+#include "base/gfx/gdi_util.h"
 #include "webkit/glue/plugins/webplugin_delegate_impl.h"
 #include "webkit/tools/test_shell/drag_delegate.h"
 #include "webkit/tools/test_shell/drop_delegate.h"
 #endif
 
 namespace {
 
 // WebNavigationType debugging strings taken from PolicyDelegate.mm.
 const char* kLinkClickedString = "link clicked";
 const char* kFormSubmittedString = "form submitted";
@@ skipping 647 matching lines @@
 
 void TestWebViewDelegate::Blur(WebWidget* webwidget) {
   if (WebWidgetHost* host = GetHostForWidget(webwidget))
     shell_->SetFocus(host, false);
 }
 
 
 void TestWebViewDelegate::DidMove(WebWidget* webwidget,
                                   const WebPluginGeometry& move) {
 #if defined(OS_WIN)
+  HRGN hrgn = ::CreateRectRgn(move.clip_rect.x(),
+                              move.clip_rect.y(),
+                              move.clip_rect.right(),
+                              move.clip_rect.bottom());
+  gfx::SubtractRectanglesFromRegion(hrgn, move.cutout_rects);
+
+  // Note: System will own the hrgn after we call SetWindowRgn,
+  // so we don't need to call DeleteObject(hrgn)
+  ::SetWindowRgn(move.window, hrgn, FALSE);
+
+  unsigned long flags = 0;
+  if (move.visible)
+    flags |= SWP_SHOWWINDOW;
+  else
+    flags |= SWP_HIDEWINDOW;
+
+  ::SetWindowPos(move.window,
+                 NULL,
+                 move.window_rect.x(),
+                 move.window_rect.y(),
+                 move.window_rect.width(),
+                 move.window_rect.height(),
+                 flags);
+
+#endif
   // TODO(port): add me once plugins work.
-  WebPluginDelegateImpl::MoveWindow(
-      move.window, move.window_rect, move.clip_rect, move.cutout_rects,
-      move.visible);
-#endif
 }
 
 bool TestWebViewDelegate::IsHidden() {
   return false;
 }
 
 void TestWebViewDelegate::RegisterDragDrop() {
 #if defined(OS_WIN)
   // TODO(port): add me once drag and drop works.
   DCHECK(!drop_delegate_);
@@ skipping 111 matching lines @@
     else
       return L"main frame";
   } else {
     if (name.length())
       return L"frame \"" + name + L"\"";
     else
       return L"frame (anonymous)";
   }
 }