b70b229370
Wef is a Rust library for embedding WebView functionality using Chromium Embedded Framework (CEF3) with offscreen rendering support.
81 lines
2.3 KiB
C++
81 lines
2.3 KiB
C++
#include <windows.h>
|
|
|
|
#include "external_pump.h"
|
|
|
|
static const int MSG_HAVE_WORK = WM_USER + 1;
|
|
|
|
class ExternalPumpWin : public ExternalPump {
|
|
public:
|
|
ExternalPumpWin() {
|
|
HINSTANCE hInstance = GetModuleHandle(nullptr);
|
|
const char* const className = "CEFMainTargetHWND";
|
|
|
|
WNDCLASSEX wcex = {};
|
|
wcex.cbSize = sizeof(WNDCLASSEX);
|
|
wcex.lpfnWndProc = WndProc;
|
|
wcex.hInstance = hInstance;
|
|
wcex.lpszClassName = className;
|
|
RegisterClassEx(&wcex);
|
|
|
|
main_thread_target_ =
|
|
CreateWindow(className, nullptr, WS_OVERLAPPEDWINDOW, 0, 0, 0, 0,
|
|
HWND_MESSAGE, nullptr, hInstance, nullptr);
|
|
|
|
SetWindowLongPtr(main_thread_target_, GWLP_USERDATA,
|
|
reinterpret_cast<LONG_PTR>(this));
|
|
}
|
|
|
|
~ExternalPumpWin() override {
|
|
KillTimer();
|
|
if (main_thread_target_) {
|
|
DestroyWindow(main_thread_target_);
|
|
}
|
|
}
|
|
|
|
void OnScheduleMessagePumpWork(int64_t delay_ms) override {
|
|
// This method may be called on any thread.
|
|
PostMessage(main_thread_target_, MSG_HAVE_WORK, 0,
|
|
static_cast<LPARAM>(delay_ms));
|
|
}
|
|
|
|
protected:
|
|
void SetTimer(int64_t delay_ms) override {
|
|
timer_pending_ = true;
|
|
::SetTimer(main_thread_target_, 1, static_cast<UINT>(delay_ms), nullptr);
|
|
}
|
|
|
|
void KillTimer() override {
|
|
if (timer_pending_) {
|
|
::KillTimer(main_thread_target_, 1);
|
|
timer_pending_ = false;
|
|
}
|
|
}
|
|
|
|
bool IsTimerPending() override { return timer_pending_; }
|
|
|
|
private:
|
|
static LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wparam,
|
|
LPARAM lparam) {
|
|
if (msg == WM_TIMER || msg == MSG_HAVE_WORK) {
|
|
ExternalPumpWin* message_loop = reinterpret_cast<ExternalPumpWin*>(
|
|
GetWindowLongPtr(hwnd, GWLP_USERDATA));
|
|
if (msg == MSG_HAVE_WORK) {
|
|
const int64_t delay_ms = static_cast<int64_t>(lparam);
|
|
message_loop->OnScheduleWork(delay_ms);
|
|
} else {
|
|
message_loop->OnTimerTimeout();
|
|
}
|
|
}
|
|
return DefWindowProc(hwnd, msg, wparam, lparam);
|
|
}
|
|
|
|
// True if a timer event is currently pending.
|
|
bool timer_pending_ = false;
|
|
|
|
// HWND owned by the thread that CefDoMessageLoopWork should be invoked on.
|
|
HWND main_thread_target_ = nullptr;
|
|
};
|
|
|
|
std::unique_ptr<ExternalPump> ExternalPump::Create() {
|
|
return std::make_unique<ExternalPumpWin>();
|
|
}
|