PassRefPtr<Image> MediaControlTextTrackContainerElement::createTextTrackRepresentationImage()
{
if (!hasChildNodes())
return nullptr;
Frame* frame = document().frame();
if (!frame)
return nullptr;
document().updateLayout();
auto renderer = this->renderer();
if (!renderer)
return nullptr;
if (!renderer->hasLayer())
return nullptr;
RenderLayer* layer = toRenderLayerModelObject(renderer)->layer();
float deviceScaleFactor = 1;
if (Page* page = document().page())
deviceScaleFactor = page->deviceScaleFactor();
IntRect paintingRect = IntRect(IntPoint(), layer->size());
OwnPtr<ImageBuffer> buffer(ImageBuffer::create(paintingRect.size(), deviceScaleFactor, ColorSpaceDeviceRGB));
if (!buffer)
return nullptr;
layer->paint(buffer->context(), paintingRect, PaintBehaviorFlattenCompositingLayers, nullptr, nullptr, RenderLayer::PaintLayerPaintingCompositingAllPhases);
return buffer->copyImage();
}
void MediaControlTextTrackContainerElement::paintTextTrackRepresentation(GraphicsContext* context, const IntRect& contextRect)
{
if (!hasChildNodes())
return;
RenderObject* renderer = this->renderer();
if (!renderer)
return;
Frame* frame = document()->frame();
if (!frame)
return;
document()->updateLayout();
LayoutRect topLevelRect;
IntRect paintingRect = pixelSnappedIntRect(renderer->paintingRootRect(topLevelRect));
// Translate the renderer painting rect into graphics context coordinates.
FloatSize translation(-paintingRect.x(), -paintingRect.y());
// But anchor to the bottom of the graphics context rect.
translation.expand(max(0, contextRect.width() - paintingRect.width()), max(0, contextRect.height() - paintingRect.height()));
context->translate(translation);
RenderLayer* layer = frame->contentRenderer()->layer();
layer->paint(context, paintingRect, PaintBehaviorFlattenCompositingLayers, renderer, 0, RenderLayer::PaintLayerPaintingCompositingAllPhases);
}
