122 lines
3.6 KiB
C++
122 lines
3.6 KiB
C++
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/*
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* Copyright 2004 The WebRTC Project Authors. All rights reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "webrtc/base/common.h"
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#include "webrtc/base/logging.h"
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#include "webrtc/base/win32window.h"
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namespace rtc {
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///////////////////////////////////////////////////////////////////////////////
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// Win32Window
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///////////////////////////////////////////////////////////////////////////////
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static const wchar_t kWindowBaseClassName[] = L"WindowBaseClass";
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HINSTANCE Win32Window::instance_ = NULL;
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ATOM Win32Window::window_class_ = 0;
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Win32Window::Win32Window() : wnd_(NULL) {
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}
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Win32Window::~Win32Window() {
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ASSERT(NULL == wnd_);
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}
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bool Win32Window::Create(HWND parent, const wchar_t* title, DWORD style,
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DWORD exstyle, int x, int y, int cx, int cy) {
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if (wnd_) {
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// Window already exists.
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return false;
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}
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if (!window_class_) {
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if (!GetModuleHandleEx(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS |
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GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT,
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reinterpret_cast<LPCWSTR>(&Win32Window::WndProc),
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&instance_)) {
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LOG_GLE(LS_ERROR) << "GetModuleHandleEx failed";
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return false;
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}
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// Class not registered, register it.
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WNDCLASSEX wcex;
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memset(&wcex, 0, sizeof(wcex));
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wcex.cbSize = sizeof(wcex);
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wcex.hInstance = instance_;
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wcex.lpfnWndProc = &Win32Window::WndProc;
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wcex.lpszClassName = kWindowBaseClassName;
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window_class_ = ::RegisterClassEx(&wcex);
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if (!window_class_) {
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LOG_GLE(LS_ERROR) << "RegisterClassEx failed";
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return false;
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}
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}
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wnd_ = ::CreateWindowEx(exstyle, kWindowBaseClassName, title, style,
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x, y, cx, cy, parent, NULL, instance_, this);
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return (NULL != wnd_);
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}
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void Win32Window::Destroy() {
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VERIFY(::DestroyWindow(wnd_) != FALSE);
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}
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void Win32Window::Shutdown() {
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if (window_class_) {
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::UnregisterClass(MAKEINTATOM(window_class_), instance_);
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window_class_ = 0;
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}
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}
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bool Win32Window::OnMessage(UINT uMsg, WPARAM wParam, LPARAM lParam,
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LRESULT& result) {
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switch (uMsg) {
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case WM_CLOSE:
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if (!OnClose()) {
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result = 0;
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return true;
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}
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break;
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}
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return false;
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}
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LRESULT Win32Window::WndProc(HWND hwnd, UINT uMsg,
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WPARAM wParam, LPARAM lParam) {
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Win32Window* that = reinterpret_cast<Win32Window*>(
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::GetWindowLongPtr(hwnd, GWLP_USERDATA));
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if (!that && (WM_CREATE == uMsg)) {
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CREATESTRUCT* cs = reinterpret_cast<CREATESTRUCT*>(lParam);
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that = static_cast<Win32Window*>(cs->lpCreateParams);
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that->wnd_ = hwnd;
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::SetWindowLongPtr(hwnd, GWLP_USERDATA, reinterpret_cast<LONG_PTR>(that));
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}
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if (that) {
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LRESULT result;
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bool handled = that->OnMessage(uMsg, wParam, lParam, result);
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if (WM_DESTROY == uMsg) {
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for (HWND child = ::GetWindow(hwnd, GW_CHILD); child;
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child = ::GetWindow(child, GW_HWNDNEXT)) {
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LOG(LS_INFO) << "Child window: " << static_cast<void*>(child);
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}
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}
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if (WM_NCDESTROY == uMsg) {
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::SetWindowLongPtr(hwnd, GWLP_USERDATA, NULL);
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that->wnd_ = NULL;
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that->OnNcDestroy();
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}
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if (handled) {
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return result;
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}
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}
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return ::DefWindowProc(hwnd, uMsg, wParam, lParam);
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}
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} // namespace rtc
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