TSharedPtr<IWebBrowserWindow> FWebBrowserSingleton::CreateBrowserWindow(void* OSWindowHandle, FString InitialURL, uint32 Width, uint32 Height, bool bUseTransparency, TOptional<FString> ContentsToLoad, bool ShowErrorMessage)
{
#if WITH_CEF3
// Create new window
TSharedPtr<FWebBrowserWindow> NewWindow(new FWebBrowserWindow(FIntPoint(Width, Height), InitialURL, ContentsToLoad, ShowErrorMessage));
// WebBrowserHandler implements browser-level callbacks.
CefRefPtr<FWebBrowserHandler> NewHandler(new FWebBrowserHandler);
NewWindow->SetHandler(NewHandler);
// Information used when creating the native window.
CefWindowHandle WindowHandle = (CefWindowHandle)OSWindowHandle; // TODO: check this is correct for all platforms
CefWindowInfo WindowInfo;
// Always use off screen rendering so we can integrate with our windows
WindowInfo.SetAsOffScreen(WindowHandle);
WindowInfo.SetTransparentPainting(bUseTransparency);
// Specify CEF browser settings here.
CefBrowserSettings BrowserSettings;
CefString URL = *InitialURL;
// Create the CEF browser window.
if (CefBrowserHost::CreateBrowser(WindowInfo, NewHandler.get(), URL, BrowserSettings, NULL))
{
WindowInterfaces.Add(NewWindow);
return NewWindow;
}
#endif
return NULL;
}
NPError NPP_SetWindowImpl(NPP instance, NPWindow* window_info) {
if (instance == NULL)
return NPERR_INVALID_INSTANCE_ERROR;
if (window_info == NULL)
return NPERR_GENERIC_ERROR;
ClientPlugin* plugin = reinterpret_cast<ClientPlugin*>(instance->pdata);
HWND parent_hwnd = reinterpret_cast<HWND>(window_info->window);
if (plugin->hWnd == NULL) {
WNDCLASS wc;
HINSTANCE hInstance = GetModuleHandle(NULL);
// Register the window class.
wc.style = CS_OWNDC;
wc.lpfnWndProc = PluginWndProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = hInstance;
wc.hIcon = LoadIcon(NULL, IDI_APPLICATION);
wc.hCursor = LoadCursor(NULL, IDC_ARROW);
wc.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
wc.lpszMenuName = NULL;
wc.lpszClassName = L"ClientOSRPlugin";
RegisterClass(&wc);
// Create the main window.
plugin->hWnd = CreateWindow(L"ClientOSRPlugin", L"Client OSR Plugin",
WS_CHILD|WS_CLIPCHILDREN|WS_CLIPSIBLINGS, 0, 0, 0, 0, parent_hwnd, NULL,
hInstance, NULL);
SetWindowLongPtr(plugin->hWnd, GWLP_USERDATA,
reinterpret_cast<LONG_PTR>(plugin));
// Enable GL drawing for the window.
EnableGL(plugin->hWnd, &(plugin->hDC), &(plugin->hRC));
// Create the off-screen rendering window.
CefWindowInfo windowInfo;
CefBrowserSettings settings;
windowInfo.SetAsOffScreen(plugin->hWnd);
if (g_offscreenTransparent)
windowInfo.SetTransparentPainting(TRUE);
CefBrowser::CreateBrowser(windowInfo, new ClientOSRHandler(plugin),
"http://www.google.com", settings);
}
// Position the plugin window and make sure it's visible.
RECT parent_rect;
GetClientRect(parent_hwnd, &parent_rect);
SetWindowPos(plugin->hWnd, NULL, parent_rect.left, parent_rect.top,
parent_rect.right - parent_rect.left,
parent_rect.bottom - parent_rect.top, SWP_SHOWWINDOW);
UpdateWindow(plugin->hWnd);
ShowWindow(plugin->hWnd, SW_SHOW);
return NPERR_NO_ERROR;
}
bool WindowlessBoltBrowser::Create( HWND hHostWnd )
{
assert(hHostWnd);
assert(::IsWindow(hHostWnd));
CefWindowInfo info;
info.SetAsOffScreen(hHostWnd);
info.SetTransparentPainting(m_transparent? TRUE : FALSE);
return BaseBoltBrowser::Create(info);
}
CefRefPtr< CefBrowser > ClientAppCreateBrowser(std::shared_ptr<ofxCEFBrowser> ofx, std::string startResource) {
// OSR Browser =======================================================
CefBrowserSettings settings;
// Create the single static handler class instance
HWND hWnd = WindowFromDC(wglGetCurrentDC());
CefWindowInfo info;
info.width = ofx->getWidth();
info.height = ofx->getHeight();
info.SetAsOffScreen(hWnd);
info.SetTransparentPainting(true);
//info.SetAsChild(hWnd, rect);
//info.SetAsPopup(hWnd, "hehe");
// Create the new child browser window using an offscreen window
auto browser = CefBrowserHost::CreateBrowserSync(info, ofx->getClientHandler().get(), CefString(startResource), settings);
return browser;
}
void BrowserClient::initBrowser(const std::string& url)
{
//Setup our main view that will show the cef ui
setupMainView( _width, _height );
_viewer->addView( _mainView );
{
CefWindowInfo windowInfo;
CefBrowserSettings browserSettings;
// in linux set a gtk widget, in windows a hwnd. If not available set nullptr - may cause some render errors, in context-menu and plugins.
windowInfo.SetAsOffScreen(0L);
windowInfo.SetTransparentPainting(true);
//windowInfo.SetAsWindowless(0L, true);
_browser = CefBrowserHost::CreateBrowserSync(windowInfo, this, url.c_str(), browserSettings, 0L);
_browser->GetHost()->SendFocusEvent(true);
}
addExecuteCallback(new MapExecuteCallback(this));
_mainView->addEventHandler(new BrowserEventHandler(_mainView.get(), this, _browser));
}
//
// FUNCTION: WndProc(HWND, UINT, WPARAM, LPARAM)
//
// PURPOSE: Processes messages for the main window.
//
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam,
LPARAM lParam) {
static HWND backWnd = NULL, forwardWnd = NULL, reloadWnd = NULL,
stopWnd = NULL, editWnd = NULL;
static WNDPROC editWndOldProc = NULL;
// Static members used for the find dialog.
static FINDREPLACE fr;
static WCHAR szFindWhat[80] = {0};
static WCHAR szLastFindWhat[80] = {0};
static bool findNext = false;
static bool lastMatchCase = false;
int wmId, wmEvent;
PAINTSTRUCT ps;
HDC hdc;
if (hWnd == editWnd) {
// Callback for the edit window
switch (message) {
case WM_CHAR:
if (wParam == VK_RETURN && g_handler.get()) {
// When the user hits the enter key load the URL
CefRefPtr<CefBrowser> browser = g_handler->GetBrowser();
wchar_t strPtr[MAX_URL_LENGTH+1] = {0};
*((LPWORD)strPtr) = MAX_URL_LENGTH;
LRESULT strLen = SendMessage(hWnd, EM_GETLINE, 0, (LPARAM)strPtr);
if (strLen > 0) {
strPtr[strLen] = 0;
browser->GetMainFrame()->LoadURL(strPtr);
}
return 0;
}
}
return (LRESULT)CallWindowProc(editWndOldProc, hWnd, message, wParam,
lParam);
} else if (message == uFindMsg) {
// Find event.
LPFINDREPLACE lpfr = (LPFINDREPLACE)lParam;
if (lpfr->Flags & FR_DIALOGTERM) {
// The find dialog box has been dismissed so invalidate the handle and
// reset the search results.
hFindDlg = NULL;
if (g_handler.get()) {
g_handler->GetBrowser()->GetHost()->StopFinding(true);
szLastFindWhat[0] = 0;
findNext = false;
}
return 0;
}
if ((lpfr->Flags & FR_FINDNEXT) && g_handler.get()) {
// Search for the requested string.
bool matchCase = (lpfr->Flags & FR_MATCHCASE?true:false);
if (matchCase != lastMatchCase ||
(matchCase && wcsncmp(szFindWhat, szLastFindWhat,
sizeof(szLastFindWhat)/sizeof(WCHAR)) != 0) ||
(!matchCase && _wcsnicmp(szFindWhat, szLastFindWhat,
sizeof(szLastFindWhat)/sizeof(WCHAR)) != 0)) {
// The search string has changed, so reset the search results.
if (szLastFindWhat[0] != 0) {
g_handler->GetBrowser()->GetHost()->StopFinding(true);
findNext = false;
}
lastMatchCase = matchCase;
wcscpy_s(szLastFindWhat, sizeof(szLastFindWhat)/sizeof(WCHAR),
szFindWhat);
}
g_handler->GetBrowser()->GetHost()->Find(0, lpfr->lpstrFindWhat,
(lpfr->Flags & FR_DOWN)?true:false, matchCase, findNext);
if (!findNext)
findNext = true;
}
return 0;
} else {
// Callback for the main window
switch (message) {
case WM_CREATE: {
// Create the single static handler class instance
g_handler = new ClientHandler();
g_handler->SetMainHwnd(hWnd);
// Create the child windows used for navigation
RECT rect;
int x = 0;
GetClientRect(hWnd, &rect);
backWnd = CreateWindow(L"BUTTON", L"Back",
WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON
| WS_DISABLED, x, 0, BUTTON_WIDTH, URLBAR_HEIGHT,
hWnd, (HMENU) IDC_NAV_BACK, hInst, 0);
x += BUTTON_WIDTH;
forwardWnd = CreateWindow(L"BUTTON", L"Forward",
WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON
| WS_DISABLED, x, 0, BUTTON_WIDTH,
URLBAR_HEIGHT, hWnd, (HMENU) IDC_NAV_FORWARD,
hInst, 0);
x += BUTTON_WIDTH;
reloadWnd = CreateWindow(L"BUTTON", L"Reload",
WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON
| WS_DISABLED, x, 0, BUTTON_WIDTH,
URLBAR_HEIGHT, hWnd, (HMENU) IDC_NAV_RELOAD,
hInst, 0);
x += BUTTON_WIDTH;
stopWnd = CreateWindow(L"BUTTON", L"Stop",
WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON
| WS_DISABLED, x, 0, BUTTON_WIDTH, URLBAR_HEIGHT,
hWnd, (HMENU) IDC_NAV_STOP, hInst, 0);
x += BUTTON_WIDTH;
editWnd = CreateWindow(L"EDIT", 0,
WS_CHILD | WS_VISIBLE | WS_BORDER | ES_LEFT |
ES_AUTOVSCROLL | ES_AUTOHSCROLL| WS_DISABLED,
x, 0, rect.right - BUTTON_WIDTH * 4,
URLBAR_HEIGHT, hWnd, 0, hInst, 0);
// Assign the edit window's WNDPROC to this function so that we can
// capture the enter key
editWndOldProc =
reinterpret_cast<WNDPROC>(GetWindowLongPtr(editWnd, GWLP_WNDPROC));
SetWindowLongPtr(editWnd, GWLP_WNDPROC,
reinterpret_cast<LONG_PTR>(WndProc));
g_handler->SetEditHwnd(editWnd);
g_handler->SetButtonHwnds(backWnd, forwardWnd, reloadWnd, stopWnd);
rect.top += URLBAR_HEIGHT;
CefWindowInfo info;
CefBrowserSettings settings;
if (AppIsOffScreenRenderingEnabled()) {
CefRefPtr<CefCommandLine> cmd_line = AppGetCommandLine();
bool transparent =
cmd_line->HasSwitch(cefclient::kTransparentPaintingEnabled);
CefRefPtr<OSRWindow> osr_window =
OSRWindow::Create(&g_main_browser_provider, transparent);
osr_window->CreateWidget(hWnd, rect, hInst, szOSRWindowClass);
info.SetAsOffScreen(osr_window->hwnd());
info.SetTransparentPainting(transparent ? TRUE : FALSE);
g_handler->SetOSRHandler(osr_window.get());
} else {
// Initialize window info to the defaults for a child window.
info.SetAsChild(hWnd, rect);
}
// Creat the new child browser window
CefBrowserHost::CreateBrowser(info, g_handler.get(),
g_handler->GetStartupURL(), settings, NULL);
return 0;
}
case WM_COMMAND: {
CefRefPtr<CefBrowser> browser;
if (g_handler.get())
browser = g_handler->GetBrowser();
wmId = LOWORD(wParam);
wmEvent = HIWORD(wParam);
// Parse the menu selections:
switch (wmId) {
case IDM_ABOUT:
DialogBox(hInst, MAKEINTRESOURCE(IDD_ABOUTBOX), hWnd, About);
return 0;
case IDM_EXIT:
if (g_handler.get())
g_handler->CloseAllBrowsers(false);
return 0;
case ID_WARN_CONSOLEMESSAGE:
if (g_handler.get()) {
std::wstringstream ss;
ss << L"Console messages will be written to "
<< std::wstring(CefString(g_handler->GetLogFile()));
MessageBox(hWnd, ss.str().c_str(), L"Console Messages",
MB_OK | MB_ICONINFORMATION);
}
return 0;
case ID_WARN_DOWNLOADCOMPLETE:
case ID_WARN_DOWNLOADERROR:
if (g_handler.get()) {
std::wstringstream ss;
ss << L"File \"" <<
std::wstring(CefString(g_handler->GetLastDownloadFile())) <<
L"\" ";
if (wmId == ID_WARN_DOWNLOADCOMPLETE)
ss << L"downloaded successfully.";
else
ss << L"failed to download.";
MessageBox(hWnd, ss.str().c_str(), L"File Download",
MB_OK | MB_ICONINFORMATION);
}
return 0;
case ID_FIND:
if (!hFindDlg) {
// Create the find dialog.
ZeroMemory(&fr, sizeof(fr));
fr.lStructSize = sizeof(fr);
fr.hwndOwner = hWnd;
fr.lpstrFindWhat = szFindWhat;
fr.wFindWhatLen = sizeof(szFindWhat);
fr.Flags = FR_HIDEWHOLEWORD | FR_DOWN;
hFindDlg = FindText(&fr);
} else {
// Give focus to the existing find dialog.
::SetFocus(hFindDlg);
}
return 0;
case IDC_NAV_BACK: // Back button
if (browser.get())
browser->GoBack();
return 0;
case IDC_NAV_FORWARD: // Forward button
if (browser.get())
browser->GoForward();
return 0;
case IDC_NAV_RELOAD: // Reload button
if (browser.get())
browser->Reload();
return 0;
case IDC_NAV_STOP: // Stop button
if (browser.get())
browser->StopLoad();
return 0;
case ID_TESTS_GETSOURCE: // Test the GetSource function
if (browser.get())
RunGetSourceTest(browser);
return 0;
case ID_TESTS_GETTEXT: // Test the GetText function
if (browser.get())
RunGetTextTest(browser);
return 0;
case ID_TESTS_POPUP: // Test a popup window
if (browser.get())
RunPopupTest(browser);
return 0;
case ID_TESTS_REQUEST: // Test a request
if (browser.get())
RunRequestTest(browser);
return 0;
case ID_TESTS_PLUGIN_INFO: // Test plugin info
if (browser.get())
RunPluginInfoTest(browser);
return 0;
case ID_TESTS_ZOOM_IN:
if (browser.get())
ModifyZoom(browser, 0.5);
return 0;
case ID_TESTS_ZOOM_OUT:
if (browser.get())
ModifyZoom(browser, -0.5);
return 0;
case ID_TESTS_ZOOM_RESET:
if (browser.get())
browser->GetHost()->SetZoomLevel(0.0);
return 0;
case ID_TESTS_TRACING_BEGIN:
g_handler->BeginTracing();
return 0;
case ID_TESTS_TRACING_END:
g_handler->EndTracing();
return 0;
case ID_TESTS_PRINT:
if(browser.get())
browser->GetHost()->Print();
return 0;
case ID_TESTS_OTHER_TESTS:
if (browser.get())
RunOtherTests(browser);
return 0;
}
break;
}
case WM_PAINT:
hdc = BeginPaint(hWnd, &ps);
EndPaint(hWnd, &ps);
return 0;
case WM_SETFOCUS:
if (g_handler.get() && g_handler->GetBrowser()) {
if (AppIsOffScreenRenderingEnabled()) {
// Give focus to the OSR window.
CefRefPtr<OSRWindow> osr_window =
static_cast<OSRWindow*>(g_handler->GetOSRHandler().get());
if (osr_window)
::SetFocus(osr_window->hwnd());
} else {
// Give focus to the browser.
g_handler->GetBrowser()->GetHost()->SetFocus(true);
}
}
return 0;
case WM_SIZE:
// Minimizing resizes the window to 0x0 which causes our layout to go all
// screwy, so we just ignore it.
if (wParam != SIZE_MINIMIZED && g_handler.get() &&
g_handler->GetBrowser()) {
CefWindowHandle hwnd =
g_handler->GetBrowser()->GetHost()->GetWindowHandle();
if (hwnd) {
// Resize the browser window and address bar to match the new frame
// window size
RECT rect;
GetClientRect(hWnd, &rect);
rect.top += URLBAR_HEIGHT;
int urloffset = rect.left + BUTTON_WIDTH * 4;
HDWP hdwp = BeginDeferWindowPos(1);
hdwp = DeferWindowPos(hdwp, editWnd, NULL, urloffset,
0, rect.right - urloffset, URLBAR_HEIGHT, SWP_NOZORDER);
hdwp = DeferWindowPos(hdwp, hwnd, NULL,
rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top,
SWP_NOZORDER);
EndDeferWindowPos(hdwp);
}
}
break;
case WM_ERASEBKGND:
if (g_handler.get() && g_handler->GetBrowser()) {
CefWindowHandle hwnd =
g_handler->GetBrowser()->GetHost()->GetWindowHandle();
if (hwnd) {
// Dont erase the background if the browser window has been loaded
// (this avoids flashing)
return 0;
}
}
break;
case WM_ENTERMENULOOP:
if (!wParam) {
// Entering the menu loop for the application menu.
CefSetOSModalLoop(true);
}
break;
case WM_EXITMENULOOP:
if (!wParam) {
// Exiting the menu loop for the application menu.
CefSetOSModalLoop(false);
}
break;
case WM_CLOSE:
if (g_handler.get() && !g_handler->IsClosing()) {
CefRefPtr<CefBrowser> browser = g_handler->GetBrowser();
if (browser.get()) {
// Notify the browser window that we would like to close it. This
// will result in a call to ClientHandler::DoClose() if the
// JavaScript 'onbeforeunload' event handler allows it.
browser->GetHost()->CloseBrowser(false);
// Cancel the close.
return 0;
}
}
// Allow the close.
break;
case WM_DESTROY:
// Quitting CEF is handled in ClientHandler::OnBeforeClose().
return 0;
}
return DefWindowProc(hWnd, message, wParam, lParam);
}
}