1 files changed, 62 insertions, 0 deletions
diff --git a/o3d/gpu_plugin/gpu_plugin_object_win.cc b/o3d/gpu_plugin/gpu_plugin_object_win.cc
new file mode 100644
index 0000000..5ff5cf5
--- /dev/null
+++ b/o3d/gpu_plugin/gpu_plugin_object_win.cc
@@ -0,0 +1,62 @@
+// 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 <windows.h>
+
+#include "o3d/gpu_plugin/gpu_plugin_object.h"
+#include "o3d/gpu_plugin/gpu_processor.h"
+
+namespace gpu_plugin {
+
+namespace {
+const LPCTSTR kPluginObjectProperty = TEXT("GPUPluginObject");
+const LPCTSTR kOriginalWindowProc = TEXT("GPUPluginObjectOriginalWindowProc");
+
+LRESULT CALLBACK WindowProc(HWND handle,
+                            UINT message,
+                            WPARAM w_param,
+                            LPARAM l_param) {
+  return ::DefWindowProc(handle, message, w_param, l_param);
+}
+}  // namespace anonymous
+
+NPError GPUPluginObject::PlatformSpecificSetWindow(NPWindow* new_window) {
+  // Detach properties from old window and restore the original window proc.
+  if (window_.window) {
+    HWND handle = reinterpret_cast<HWND>(window_.window);
+    ::RemoveProp(handle, kPluginObjectProperty);
+
+    LONG original_window_proc = reinterpret_cast<LONG>(
+        ::GetProp(handle, kOriginalWindowProc));
+    ::SetWindowLong(handle, GWL_WNDPROC,
+                    original_window_proc);
+    ::RemoveProp(handle, kOriginalWindowProc);
+  }
+
+  // Attach properties to new window and set a new window proc.
+  if (new_window->window) {
+    HWND handle = reinterpret_cast<HWND>(new_window->window);
+    ::SetProp(handle,
+              kPluginObjectProperty,
+              reinterpret_cast<HANDLE>(this));
+
+    LONG original_window_proc = ::GetWindowLong(handle, GWL_WNDPROC);
+    ::SetProp(handle,
+              kOriginalWindowProc,
+              reinterpret_cast<HANDLE>(original_window_proc));
+    ::SetWindowLong(handle, GWL_WNDPROC,
+                    reinterpret_cast<LONG>(WindowProc));
+
+    status_ = kWaitingForOpenCommandBuffer;
+  } else {
+    status_ = kWaitingForSetWindow;
+    if (processor_) {
+      processor_->Destroy();
+    }
+  }
+
+  return NPERR_NO_ERROR;
+}
+
+}  // namespace gpu_plugin