Esempio n. 1
0
func windowClientBounds(hwnd win.HWND) Rectangle {
	var r win.RECT

	if !win.GetClientRect(hwnd, &r) {
		lastError("GetClientRect")
		return Rectangle{}
	}

	return Rectangle{
		int(r.Left),
		int(r.Top),
		int(r.Right - r.Left),
		int(r.Bottom - r.Top),
	}
}
Esempio n. 2
0
func NewWebView(parent Container) (*WebView, error) {
	if hr := win.OleInitialize(); hr != win.S_OK && hr != win.S_FALSE {
		return nil, newError(fmt.Sprint("OleInitialize Error: ", hr))
	}

	wv := &WebView{
		clientSite: webViewIOleClientSite{
			IOleClientSite: win.IOleClientSite{
				LpVtbl: webViewIOleClientSiteVtbl,
			},
			inPlaceSite: webViewIOleInPlaceSite{
				IOleInPlaceSite: win.IOleInPlaceSite{
					LpVtbl: webViewIOleInPlaceSiteVtbl,
				},
				inPlaceFrame: webViewIOleInPlaceFrame{
					IOleInPlaceFrame: win.IOleInPlaceFrame{
						LpVtbl: webViewIOleInPlaceFrameVtbl,
					},
				},
			},
			docHostUIHandler: webViewIDocHostUIHandler{
				IDocHostUIHandler: win.IDocHostUIHandler{
					LpVtbl: webViewIDocHostUIHandlerVtbl,
				},
			},
			webBrowserEvents2: webViewDWebBrowserEvents2{
				DWebBrowserEvents2: win.DWebBrowserEvents2{
					LpVtbl: webViewDWebBrowserEvents2Vtbl,
				},
			},
		},
	}

	if err := InitWidget(
		wv,
		parent,
		webViewWindowClass,
		win.WS_CLIPCHILDREN|win.WS_VISIBLE,
		0); err != nil {
		return nil, err
	}

	wv.clientSite.inPlaceSite.inPlaceFrame.webView = wv

	succeeded := false

	defer func() {
		if !succeeded {
			wv.Dispose()
		}
	}()

	var classFactoryPtr unsafe.Pointer
	if hr := win.CoGetClassObject(&win.CLSID_WebBrowser, win.CLSCTX_INPROC_HANDLER|win.CLSCTX_INPROC_SERVER, nil, &win.IID_IClassFactory, &classFactoryPtr); win.FAILED(hr) {
		return nil, errorFromHRESULT("CoGetClassObject", hr)
	}
	classFactory := (*win.IClassFactory)(classFactoryPtr)
	defer classFactory.Release()

	var browserObjectPtr unsafe.Pointer
	if hr := classFactory.CreateInstance(nil, &win.IID_IOleObject, &browserObjectPtr); win.FAILED(hr) {
		return nil, errorFromHRESULT("IClassFactory.CreateInstance", hr)
	}
	browserObject := (*win.IOleObject)(browserObjectPtr)

	wv.browserObject = browserObject

	if hr := browserObject.SetClientSite((*win.IOleClientSite)(unsafe.Pointer(&wv.clientSite))); win.FAILED(hr) {
		return nil, errorFromHRESULT("IOleObject.SetClientSite", hr)
	}

	if hr := browserObject.SetHostNames(syscall.StringToUTF16Ptr("Walk.WebView"), nil); win.FAILED(hr) {
		return nil, errorFromHRESULT("IOleObject.SetHostNames", hr)
	}

	if hr := win.OleSetContainedObject((*win.IUnknown)(unsafe.Pointer(browserObject)), true); win.FAILED(hr) {
		return nil, errorFromHRESULT("OleSetContainedObject", hr)
	}

	var rect win.RECT
	win.GetClientRect(wv.hWnd, &rect)

	if hr := browserObject.DoVerb(win.OLEIVERB_SHOW, nil, (*win.IOleClientSite)(unsafe.Pointer(&wv.clientSite)), -1, wv.hWnd, &rect); win.FAILED(hr) {
		return nil, errorFromHRESULT("IOleObject.DoVerb", hr)
	}

	var cpcPtr unsafe.Pointer
	if hr := browserObject.QueryInterface(&win.IID_IConnectionPointContainer, &cpcPtr); win.FAILED(hr) {
		return nil, errorFromHRESULT("IOleObject.QueryInterface(IID_IConnectionPointContainer)", hr)
	}
	cpc := (*win.IConnectionPointContainer)(cpcPtr)
	defer cpc.Release()

	var cp *win.IConnectionPoint
	if hr := cpc.FindConnectionPoint(&win.DIID_DWebBrowserEvents2, &cp); win.FAILED(hr) {
		return nil, errorFromHRESULT("IConnectionPointContainer.FindConnectionPoint(DIID_DWebBrowserEvents2)", hr)
	}
	defer cp.Release()

	var cookie uint32
	if hr := cp.Advise(unsafe.Pointer(&wv.clientSite.webBrowserEvents2), &cookie); win.FAILED(hr) {
		return nil, errorFromHRESULT("IConnectionPoint.Advise", hr)
	}

	wv.onResize()

	wv.MustRegisterProperty("URL", NewProperty(
		func() interface{} {
			url, _ := wv.URL()
			return url
		},
		func(v interface{}) error {
			return wv.SetURL(v.(string))
		},
		wv.urlChangedPublisher.Event()))

	succeeded = true

	return wv, nil
}