137 lines
4.2 KiB
C++
137 lines
4.2 KiB
C++
/*
|
|
* Copyright 2004 The WebRTC Project Authors. All rights reserved.
|
|
*
|
|
* Use of this source code is governed by a BSD-style license
|
|
* that can be found in the LICENSE file in the root of the source
|
|
* tree. An additional intellectual property rights grant can be found
|
|
* in the file PATENTS. All contributing project authors may
|
|
* be found in the AUTHORS file in the root of the source tree.
|
|
*/
|
|
|
|
#include "rtc_base/win32_window.h"
|
|
|
|
#include "rtc_base/checks.h"
|
|
#include "rtc_base/logging.h"
|
|
|
|
namespace rtc {
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
// Win32Window
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
static const wchar_t kWindowBaseClassName[] = L"RtcWindowBaseClass";
|
|
HINSTANCE Win32Window::instance_ = nullptr;
|
|
ATOM Win32Window::window_class_ = 0;
|
|
|
|
Win32Window::Win32Window() : wnd_(nullptr) {}
|
|
|
|
Win32Window::~Win32Window() { RTC_DCHECK(nullptr == wnd_); }
|
|
|
|
bool Win32Window::Create(HWND parent, const wchar_t* title, DWORD style,
|
|
DWORD exstyle, int x, int y, int cx, int cy) {
|
|
if (wnd_) {
|
|
// Window already exists.
|
|
return false;
|
|
}
|
|
|
|
if (!window_class_) {
|
|
if (!GetModuleHandleExW(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS |
|
|
GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT,
|
|
reinterpret_cast<LPCWSTR>(&Win32Window::WndProc),
|
|
&instance_)) {
|
|
RTC_LOG_GLE(LS_ERROR) << "GetModuleHandleEx failed";
|
|
return false;
|
|
}
|
|
|
|
// Register or reregister the class as necessary. window_class_ == nullptr
|
|
// is not an infallible indicator that the class is unregistered.
|
|
WNDCLASSEXW wcex;
|
|
memset(&wcex, 0, sizeof(wcex));
|
|
wcex.cbSize = sizeof(wcex);
|
|
if (::GetClassInfoExW(instance_, kWindowBaseClassName, &wcex) &&
|
|
!::UnregisterClassW(kWindowBaseClassName, instance_)) {
|
|
RTC_LOG_GLE(LS_ERROR) << "UnregisterClass failed.";
|
|
}
|
|
|
|
memset(&wcex, 0, sizeof(wcex));
|
|
wcex.cbSize = sizeof(wcex);
|
|
wcex.hInstance = instance_;
|
|
wcex.lpfnWndProc = &Win32Window::WndProc;
|
|
wcex.lpszClassName = kWindowBaseClassName;
|
|
window_class_ = ::RegisterClassExW(&wcex);
|
|
if (!window_class_) {
|
|
RTC_LOG_GLE(LS_ERROR) << "RegisterClassEx failed";
|
|
return false;
|
|
}
|
|
}
|
|
wnd_ = ::CreateWindowExW(exstyle, kWindowBaseClassName, title, style, x, y,
|
|
cx, cy, parent, nullptr, instance_, this);
|
|
return (nullptr != wnd_);
|
|
}
|
|
|
|
void Win32Window::Destroy() {
|
|
const bool success = ::DestroyWindow(wnd_);
|
|
RTC_DCHECK(success);
|
|
}
|
|
|
|
void Win32Window::Shutdown() {
|
|
if (window_class_) {
|
|
if (!::UnregisterClass(MAKEINTATOM(window_class_), instance_)) {
|
|
RTC_LOG_GLE(LS_ERROR) << "UnregisterClass failed.";
|
|
}
|
|
window_class_ = 0;
|
|
}
|
|
}
|
|
|
|
bool Win32Window::OnMessage(UINT uMsg, WPARAM wParam, LPARAM lParam,
|
|
LRESULT& result) {
|
|
switch (uMsg) {
|
|
case WM_CLOSE:
|
|
if (!OnClose()) {
|
|
result = 0;
|
|
return true;
|
|
}
|
|
break;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool Win32Window::OnClose() { return true; }
|
|
|
|
void Win32Window::OnNcDestroy() {
|
|
// Do nothing. }
|
|
}
|
|
|
|
LRESULT Win32Window::WndProc(HWND hwnd, UINT uMsg, WPARAM wParam,
|
|
LPARAM lParam) {
|
|
Win32Window* that =
|
|
reinterpret_cast<Win32Window*>(::GetWindowLongPtr(hwnd, GWLP_USERDATA));
|
|
if (!that && (WM_CREATE == uMsg)) {
|
|
CREATESTRUCT* cs = reinterpret_cast<CREATESTRUCT*>(lParam);
|
|
that = static_cast<Win32Window*>(cs->lpCreateParams);
|
|
that->wnd_ = hwnd;
|
|
::SetWindowLongPtr(hwnd, GWLP_USERDATA, reinterpret_cast<LONG_PTR>(that));
|
|
}
|
|
if (that) {
|
|
LRESULT result;
|
|
bool handled = that->OnMessage(uMsg, wParam, lParam, result);
|
|
if (WM_DESTROY == uMsg) {
|
|
for (HWND child = ::GetWindow(hwnd, GW_CHILD); child;
|
|
child = ::GetWindow(child, GW_HWNDNEXT)) {
|
|
RTC_LOG(LS_INFO) << "Child window: " << static_cast<void*>(child);
|
|
}
|
|
}
|
|
if (WM_NCDESTROY == uMsg) {
|
|
::SetWindowLongPtr(hwnd, GWLP_USERDATA, NULL);
|
|
that->wnd_ = nullptr;
|
|
that->OnNcDestroy();
|
|
}
|
|
if (handled) {
|
|
return result;
|
|
}
|
|
}
|
|
return ::DefWindowProc(hwnd, uMsg, wParam, lParam);
|
|
}
|
|
|
|
} // namespace rtc
|