void FullscreenVideoController::LayerClient::platformCALayerLayoutSublayersOfLayer(PlatformCALayer* layer)
{
ASSERT_ARG(layer, layer == m_parent->m_rootChild);
HTMLVideoElement* videoElement = m_parent->m_videoElement.get();
if (!videoElement)
return;
PlatformCALayer* videoLayer = PlatformCALayer::platformCALayer(videoElement->platformLayer());
if (!videoLayer || videoLayer->superlayer() != layer)
return;
FloatRect layerBounds = layer->bounds();
FloatSize videoSize = videoElement->player()->naturalSize();
float scaleFactor;
if (videoSize.aspectRatio() > layerBounds.size().aspectRatio())
scaleFactor = layerBounds.width() / videoSize.width();
else
scaleFactor = layerBounds.height() / videoSize.height();
videoSize.scale(scaleFactor);
// Calculate the centered position based on the videoBounds and layerBounds:
FloatPoint videoPosition;
FloatPoint videoOrigin;
videoOrigin.setX((layerBounds.width() - videoSize.width()) * 0.5);
videoOrigin.setY((layerBounds.height() - videoSize.height()) * 0.5);
videoLayer->setPosition(videoOrigin);
videoLayer->setBounds(FloatRect(FloatPoint(), videoSize));
}
static void fitContextToBox(GraphicsContext* context, const FloatSize& srcImageSize, const FloatSize& dstSize)
{
float srcRatio = srcImageSize.aspectRatio();
float dstRatio = dstSize.aspectRatio();
float scale;
float translationX = 0;
float translationY = 0;
if (srcRatio > dstRatio) {
scale = dstSize.width() / srcImageSize.width();
translationY = (dstSize.height() - scale * srcImageSize.height()) / 2;
} else {
scale = dstSize.height() / srcImageSize.height();
translationX = (dstSize.width() - scale * srcImageSize.width()) / 2;
}
context->translate(translationX, translationY);
context->scale(FloatSize(scale, scale));
}