void WKCACFLayerRenderer::createRenderer()
{
if (m_triedToCreateD3DRenderer)
return;
m_triedToCreateD3DRenderer = true;
D3DPRESENT_PARAMETERS parameters = initialPresentationParameters();
if (!d3d() || !::IsWindow(m_hostWindow))
return;
// D3D doesn't like to make back buffers for 0 size windows. We skirt this problem if we make the
// passed backbuffer width and height non-zero. The window will necessarily get set to a non-zero
// size eventually, and then the backbuffer size will get reset.
RECT rect;
GetClientRect(m_hostWindow, &rect);
if (rect.left-rect.right == 0 || rect.bottom-rect.top == 0) {
parameters.BackBufferWidth = 1;
parameters.BackBufferHeight = 1;
}
if (FAILED(d3d()->CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, m_hostWindow, D3DCREATE_HARDWARE_VERTEXPROCESSING | D3DCREATE_FPU_PRESERVE, ¶meters, &m_d3dDevice)))
return;
D3DXMATRIXA16 projection;
D3DXMatrixOrthoOffCenterRH(&projection, rect.left, rect.right, rect.top, rect.bottom, -1.0f, 1.0f);
m_d3dDevice->SetTransform(D3DTS_PROJECTION, &projection);
m_context.adoptCF(CACFContextCreate(0));
windowsForContexts().set(m_context.get(), this);
m_renderContext = static_cast<CARenderContext*>(CACFContextGetRenderContext(m_context.get()));
m_renderer = CARenderOGLNew(wkqcCARenderOGLCallbacks(wkqckCARenderDX9Callbacks), m_d3dDevice.get(), 0);
// Create the root hierarchy
m_rootLayer = WKCACFLayer::create(WKCACFLayer::Layer);
m_rootLayer->setName("WKCACFLayerRenderer rootLayer");
m_scrollLayer = WKCACFLayer::create(WKCACFLayer::Layer);
m_scrollLayer->setName("WKCACFLayerRenderer scrollLayer");
m_rootLayer->addSublayer(m_scrollLayer);
m_scrollLayer->setMasksToBounds(true);
m_scrollLayer->setAnchorPoint(CGPointMake(0, 1));
#ifndef NDEBUG
CGColorRef debugColor = createCGColor(Color(255, 0, 0, 204));
m_rootLayer->setBackgroundColor(debugColor);
CGColorRelease(debugColor);
#endif
if (IsWindow(m_hostWindow))
m_rootLayer->setFrame(bounds());
if (m_context)
m_rootLayer->becomeRootLayerForContext(m_context.get());
}
WKCACFLayerRenderer::WKCACFLayerRenderer(WKCACFLayerRendererClient* client)
: m_client(client)
, m_mightBeAbleToCreateDeviceLater(true)
, m_rootLayer(WKCACFRootLayer::create(this))
, m_scrollLayer(WKCACFLayer::create(WKCACFLayer::Layer))
, m_clipLayer(WKCACFLayer::create(WKCACFLayer::Layer))
, m_context(AdoptCF, CACFContextCreate(0))
, m_renderContext(static_cast<CARenderContext*>(CACFContextGetRenderContext(m_context.get())))
, m_renderer(0)
, m_hostWindow(0)
, m_renderTimer(this, &WKCACFLayerRenderer::renderTimerFired)
, m_scrollPosition(0, 0)
, m_scrollSize(1, 1)
, m_backingStoreDirty(false)
, m_mustResetLostDeviceBeforeRendering(false)
{
windowsForContexts().set(m_context.get(), this);
// Under the root layer, we have a clipping layer to clip the content,
// that contains a scroll layer that we use for scrolling the content.
// The root layer is the size of the client area of the window.
// The clipping layer is the size of the WebView client area (window less the scrollbars).
// The scroll layer is the size of the root child layer.
// Resizing the window will change the bounds of the rootLayer and the clip layer and will not
// cause any repositioning.
// Scrolling will affect only the position of the scroll layer without affecting the bounds.
m_rootLayer->setName("WKCACFLayerRenderer rootLayer");
m_clipLayer->setName("WKCACFLayerRenderer clipLayer");
m_scrollLayer->setName("WKCACFLayerRenderer scrollLayer");
m_rootLayer->addSublayer(m_clipLayer);
m_clipLayer->addSublayer(m_scrollLayer);
m_clipLayer->setMasksToBounds(true);
m_rootLayer->setAnchorPoint(CGPointMake(0, 0));
m_scrollLayer->setAnchorPoint(CGPointMake(0, 1));
m_clipLayer->setAnchorPoint(CGPointMake(0, 1));
#ifndef NDEBUG
CGColorRef debugColor = createCGColor(Color(255, 0, 0, 204));
m_rootLayer->setBackgroundColor(debugColor);
CGColorRelease(debugColor);
#endif
if (m_context)
m_rootLayer->becomeRootLayerForContext(m_context.get());
#ifndef NDEBUG
char* printTreeFlag = getenv("CA_PRINT_TREE");
m_printTree = printTreeFlag && atoi(printTreeFlag);
#endif
}