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// 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"
namespace o3d {
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));
}
return NPERR_NO_ERROR;
}
} // namespace gpu_plugin
} // namespace o3d
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