void LayerTreeHostCAWin::platformInitialize()
{
m_view.adoptCF(WKCACFViewCreate(kWKCACFViewDrawingDestinationWindow));
WKCACFViewSetContextUserData(m_view.get(), static_cast<AbstractCACFLayerTreeHost*>(this));
WKCACFViewSetLayer(m_view.get(), rootLayer()->platformLayer());
WKCACFViewSetContextDidChangeCallback(m_view.get(), contextDidChangeCallback, this);
// Passing WS_DISABLED makes the window invisible to mouse events, which lets WKView's normal
// event handling mechanism work even when this window is obscuring the entire WKView HWND.
// Note that m_webPage->nativeWindow() is owned by the UI process, so this creates a cross-
// process window hierarchy (and thus implicitly attaches the input queues of the UI and web
// processes' main threads).
m_window = adoptPtr(new WKCACFViewWindow(m_view.get(), m_webPage->nativeWindow(), WS_DISABLED));
CGRect bounds = m_webPage->bounds();
WKCACFViewUpdate(m_view.get(), m_window->window(), &bounds);
m_layerTreeContext.window = m_window->window();
}
bool LayerTreeHostCAWin::supportsAcceleratedCompositing()
{
static bool initialized;
static bool supportsAcceleratedCompositing;
if (initialized)
return supportsAcceleratedCompositing;
initialized = true;
RetainPtr<WKCACFViewRef> view(AdoptCF, WKCACFViewCreate(kWKCACFViewDrawingDestinationWindow));
WKCACFViewWindow dummyWindow(view.get(), 0, 0);
CGRect fakeBounds = CGRectMake(0, 0, 10, 10);
WKCACFViewUpdate(view.get(), dummyWindow.window(), &fakeBounds);
supportsAcceleratedCompositing = WKCACFViewCanDraw(view.get());
WKCACFViewUpdate(view.get(), 0, 0);
return supportsAcceleratedCompositing;
}
WKCACFViewLayerTreeHost::WKCACFViewLayerTreeHost()
: m_view(adoptCF(WKCACFViewCreate(kWKCACFViewDrawingDestinationWindow)))
, m_viewNeedsUpdate(true)
{
}
