cef离屏渲染osr示例-lq20190604.zip

#include "osr_window.h" #include "resource.h" #include "include/cef_app.h" #include "include/cef_browser.h" #include "include/cef_frame.h" #include "include/cef_runnable.h" #include <tchar.h> #include <windows.h> #define GET_X_LPARAM(lp) ((int)(short)LOWORD(lp)) #define GET_Y_LPARAM(lp) ((int)(short)HIWORD(lp)) OSRWindow* gWindow = NULL; static TCHAR szWindowName[] = L"OSRWindow"; std::map<HWND, OSRWindow*> OSRWindow::m_map_window; OSRWindow::OSRWindow(HINSTANCE instance, bool use_transpate_rending) { DWORD dw_error; gWindow = this; this->m_hInstance = instance; this->m_handle_filemap = CreateFileMapping(INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE, 0, 4 * 1920 * 1080, NULL); this->m_dc_buffer = NULL; this->m_bitmap_buffer = NULL; this->m_use_transparent_rending = use_transpate_rending; dw_error = GetLastError(); this->RegisterClass(); this->CreateOSRWindow(); } OSRWindow::~OSRWindow(void) { } void OSRWindow::RegisterClass() { WNDCLASSEX wcex; wcex.cbSize = sizeof(WNDCLASSEX); wcex.style = CS_HREDRAW | CS_VREDRAW; wcex.lpfnWndProc = &OSRWindow::WndProc; wcex.cbClsExtra = 0; wcex.cbWndExtra = 0; wcex.hInstance = this->m_hInstance; wcex.hIcon = NULL; wcex.hCursor = LoadCursor(NULL, IDC_ARROW); wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1); wcex.lpszMenuName = NULL; wcex.lpszClassName = szWindowName; wcex.hIconSm = LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDI_SMALL)); RegisterClassEx(&wcex); } LRESULT CALLBACK OSRWindow::WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) { static POINT lastMousePos, curMousePos; static bool mouseRotation = false; static bool mouseTracking = false; static int lastClickX = 0; static int lastClickY = 0; static CefBrowserHost::MouseButtonType lastClickButton = MBT_LEFT; static int gLastClickCount = 0; static double gLastClickTime = 0; static bool gLastMouseDownOnView = false; CefKeyEvent event; int wmId, wmEvent; PAINTSTRUCT ps; HDC hdc; OSRWindow* window; CefRefPtr<CefBrowserHost> browser; CefBrowserHost::MouseButtonType btnType; if (m_map_window.find(hWnd) != m_map_window.end()) { window = m_map_window[hWnd]; if (window->m_browser.get()) { browser = window->m_browser->GetHost(); } } LONG currentTime = 0; bool cancelPreviousClick = false; if (message == WM_LBUTTONDOWN || message == WM_RBUTTONDOWN || message == WM_MBUTTONDOWN || message == WM_MOUSEMOVE || message == WM_MOUSELEAVE) { currentTime = GetMessageTime(); int x = GET_X_LPARAM(lParam); int y = GET_Y_LPARAM(lParam); cancelPreviousClick = (abs(lastClickX - x) > (GetSystemMetrics(SM_CXDOUBLECLK) / 2)) || (abs(lastClickY - y) > (GetSystemMetrics(SM_CYDOUBLECLK) / 2)) || ((currentTime - gLastClickTime) > GetDoubleClickTime()); if (cancelPreviousClick && (message == WM_MOUSEMOVE || message == WM_MOUSELEAVE)) { gLastClickCount = 0; lastClickX = 0; lastClickY = 0; gLastClickTime = 0; } } switch (message) { case WM_CREATE: { OSRWindow::m_map_window[hWnd] = gWindow; gWindow->m_hwnd = hWnd; if (gWindow->GetUseTransparentRending()) { gWindow->SetLayerdAttribution(); } break; } case WM_COMMAND: wmId = LOWORD(wParam); wmEvent = HIWORD(wParam); switch (wmId) { case IDM_EXIT: DestroyWindow(hWnd); break; default: return DefWindowProc(hWnd, message, wParam, lParam); } break; case WM_MOVE: break; case WM_PAINT: { window->PaintWindow(hWnd); return 0; } case WM_SIZE: { OSRWindow* window = m_map_window[hWnd]; if (window->m_browser.get()) { window->m_browser->GetHost()->WasResized(); } break; } case WM_NCHITTEST:{ int x = GET_X_LPARAM(lParam); int y = GET_Y_LPARAM(lParam); POINT pt = { x, y }; ScreenToClient(hWnd, &pt); if (pt.y < 18) return HTCAPTION; else return 1; break; } case WM_LBUTTONDOWN: case WM_RBUTTONDOWN: case WM_MBUTTONDOWN: { SetCapture(hWnd); SetFocus(hWnd); btnType = (message == WM_LBUTTONDOWN ? MBT_LEFT : ( message == WM_RBUTTONDOWN ? MBT_RIGHT : MBT_MIDDLE)); if (browser.get()) { CefMouseEvent mouse_event; mouse_event.x = GET_X_LPARAM(lParam); mouse_event.y = GET_Y_LPARAM(lParam); mouse_event.modifiers = GetCefMouseModifiers(wParam); browser->SendMouseClickEvent(mouse_event, btnType, false, 1); } break; } case WM_LBUTTONUP: case WM_RBUTTONUP: case WM_MBUTTONUP: { btnType = (message == WM_LBUTTONUP ? MBT_LEFT : ( message == WM_RBUTTONUP ? MBT_RIGHT : MBT_MIDDLE)); if (GetCapture() == hWnd) ReleaseCapture(); if (browser.get()) { CefMouseEvent mouse_event; mouse_event.x = GET_X_LPARAM(lParam); mouse_event.y = GET_Y_LPARAM(lParam); browser->SendMouseClickEvent(mouse_event, btnType, true, 1); } break; } case WM_MOUSEMOVE: { if (browser.get()) { CefMouseEvent mouse_event; mouse_event.x = GET_X_LPARAM(lParam); mouse_event.y = GET_Y_LPARAM(lParam); mouse_event.modifiers = GetCefMouseModifiers(wParam); browser->SendMouseMoveEvent(mouse_event, false); } break; } case WM_MOUSELEAVE: { if (browser.get()) { CefMouseEvent mouse_event; mouse_event.x = 0; mouse_event.y = 0; mouse_event.modifiers = GetCefMouseModifiers(wParam); browser->SendMouseMoveEvent(mouse_event, true); } break; } case WM_MOUSEWHEEL: { if (!browser.get()) { break; } POINT screen_point = { GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam) }; HWND scrolled_wnd = ::WindowFromPoint(screen_point); if (scrolled_wnd != hWnd) { break; } ScreenToClient(hWnd, &screen_point); int delta = GET_WHEEL_DELTA_WPARAM(wParam); CefMouseEvent mouse_event; mouse_event.x = screen_point.x; mouse_event.y = screen_point.y; mouse_event.modifiers = GetCefMouseModifiers(wParam); browser->SendMouseWheelEvent(mouse_event, isKeyDown(VK_SHIFT) ? delta : 0, !isKeyDown(VK_SHIFT) ? delta : 0); break; } case WM_SETFOCUS: case WM_KILLFOCUS: if (browser.get()) browser->SendFocusEvent(message == WM_SETFOCUS); break; case WM_CAPTURECHANGED: case WM_CANCELMODE: if (browser.get()) { browser->SendCaptureLostEvent(); } break; case WM_SYSCHAR: case WM_SYSKEYDOWN: case WM_SYSKEYUP: case WM_KEYDOWN: case WM_KEYUP: case WM_CHAR: { event.windows_key_code = wParam; event.native_key_code = lParam; event.is_system_key = message == WM_SYSCHAR || message == WM_SYSKEYDOWN || message == WM_SYSKEYUP; if (message == WM_KEYDOWN || message == WM_SYSKEYDOWN) event.type = KEYEVENT_RAWKEYDOWN; else if (message == WM_KEYUP || message == WM_SYSKEYUP) event.type = KEYEVENT_KEYUP; else event.type = KEYEVENT_CHAR; event.modifiers = GetCefKeyboardModifiers(wParam, lParam); if (browser.get()) browser->SendKeyEvent(event); break; } case WM_DESTROY: PostQuitMessage(0); break; case WM_ERASEBKGND: return 0; } return DefWindowProc(hWnd, message, wParam, lParam); return 0; } void OSRWindow::CreateOSRWindow() { int scrWidth, scrHeight,initWidth = 800,initHeight = 600,initLeft,initTop; scrWidth = GetSystemMetrics(SM_CXSCREEN); scrHeight = GetSystemMetrics(SM_CYSCREEN); initLeft = (scrWidth - initWidth) / 2; initTop = (scrHeight - initHeight) / 2; m_hwnd = ::CreateWindow(szWindowName, NULL, WS_POPUP | WS_MAXIMIZEBOX | WS_MINIMIZEBOX, initLeft, initTop, 800, 600, NULL, NULL, m_hInstance, NULL); ::ShowWindow(m_hwnd, SW_SHOW); ::UpdateWindow(m_hwnd); ::SetWindowPos(m_hwnd, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE); } bool OSRWindow::isKeyDown(WPARAM wparam) { return (GetKeyState(wparam) & 0x8000) != 0; } int OSRWindow::GetCefMouseModifiers(WPARAM wparam) { int modifi