127 lines
3.6 KiB
C++
127 lines
3.6 KiB
C++
#include "mpv_container.h"
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#include <dwmapi.h>
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#include "mpv_core.h"
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#include "utils.h"
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namespace mpv {
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MpvContainer* MpvContainer::GetInstance() { return instance_.get(); }
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MpvContainer::~MpvContainer() {
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if (taskbar_) {
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taskbar_->Release();
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taskbar_ = nullptr;
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}
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}
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HWND MpvContainer::Create() {
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auto window_class = WNDCLASSEX{};
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::SecureZeroMemory(&window_class, sizeof(window_class));
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window_class.cbSize = sizeof(window_class);
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window_class.style = 0;
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window_class.lpfnWndProc = WindowProc;
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window_class.hInstance = GetModuleHandle(nullptr);
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window_class.lpszClassName = kClassName;
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window_class.hCursor = ::LoadCursorW(nullptr, IDC_ARROW);
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window_class.hbrBackground = ::CreateSolidBrush(RGB(0, 0, 0));
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::RegisterClassExW(&window_class);
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// Use WS_POPUP for a borderless window without title bar.
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// Use WS_EX_TOOLWINDOW | WS_EX_NOREDIRECTIONBITMAP to prevent shadow and DWM effects.
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handle_ = ::CreateWindowExW(
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WS_EX_TOOLWINDOW | WS_EX_NOACTIVATE | WS_EX_NOREDIRECTIONBITMAP,
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kClassName, kWindowName, WS_POPUP,
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0, 0, 100, 100, nullptr, nullptr,
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GetModuleHandle(nullptr), nullptr);
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// Disable DWM animations on the container.
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auto disable_window_transitions = TRUE;
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DwmSetWindowAttribute(handle_, DWMWA_TRANSITIONS_FORCEDISABLED,
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&disable_window_transitions,
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sizeof(disable_window_transitions));
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return handle_;
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}
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HWND MpvContainer::Get(HWND flutter_window) {
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if (!handle_) {
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Create();
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}
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RECT window_rect;
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::GetWindowRect(flutter_window, &window_rect);
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::SetWindowPos(handle_, flutter_window, window_rect.left, window_rect.top,
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window_rect.right - window_rect.left,
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window_rect.bottom - window_rect.top, SWP_NOACTIVATE);
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::SetWindowLongPtr(handle_, GWLP_USERDATA,
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reinterpret_cast<LONG_PTR>(flutter_window));
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// Remove taskbar entry using cached ITaskbarList3.
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if (!taskbar_) {
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::CoCreateInstance(CLSID_TaskbarList, 0, CLSCTX_INPROC_SERVER,
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IID_PPV_ARGS(&taskbar_));
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}
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if (taskbar_) {
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taskbar_->DeleteTab(handle_);
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}
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::ShowWindow(handle_, SW_SHOWNOACTIVATE);
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::SetFocus(flutter_window);
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return handle_;
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}
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LRESULT CALLBACK MpvContainer::WindowProc(HWND const window,
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UINT const message,
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WPARAM const wparam,
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LPARAM const lparam) noexcept {
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switch (message) {
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case WM_DESTROY: {
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::PostQuitMessage(0);
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return 0;
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}
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case WM_MOUSEMOVE: {
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// Redirect focus to Flutter window.
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auto* core = MpvCore::GetInstance();
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if (core) {
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core->SetHitTestBehavior(0);
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}
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auto user_data = ::GetWindowLongPtr(window, GWLP_USERDATA);
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if (user_data) {
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::SetForegroundWindow(reinterpret_cast<HWND>(user_data));
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}
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break;
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}
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case WM_ERASEBKGND: {
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// Prevent erasing to avoid flicker.
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return 1;
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}
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case WM_SIZE:
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case WM_MOVE:
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case WM_MOVING:
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case WM_ACTIVATE:
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case WM_WINDOWPOSCHANGED: {
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auto* core = MpvCore::GetInstance();
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if (core) {
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core->SetHitTestBehavior(0);
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}
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auto user_data = ::GetWindowLongPtr(window, GWLP_USERDATA);
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if (user_data) {
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::SetForegroundWindow(reinterpret_cast<HWND>(user_data));
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}
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break;
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}
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default:
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break;
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}
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return ::DefWindowProc(window, message, wparam, lparam);
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}
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std::unique_ptr<MpvContainer> MpvContainer::instance_ =
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std::make_unique<MpvContainer>();
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} // namespace mpv
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