LayoutUnit RenderImage::computeReplacedLogicalWidth(bool includeMaxWidth) const
{
// If we've got an explicit width/height assigned, propagate it to the image resource.
if (style()->logicalWidth().isFixed() && style()->logicalHeight().isFixed()) {
LayoutUnit width = RenderReplaced::computeReplacedLogicalWidth(includeMaxWidth);
m_imageResource->setContainerSizeForRenderer(IntSize(width, computeReplacedLogicalHeight()));
return width;
}
IntSize containerSize;
if (m_imageResource->imageHasRelativeWidth() || m_imageResource->imageHasRelativeHeight()) {
// Propagate the containing block size to the image resource, otherwhise we can't compute our own intrinsic size, if it's relative.
RenderObject* containingBlock = isPositioned() ? container() : this->containingBlock();
if (containingBlock->isBox()) {
RenderBox* box = toRenderBox(containingBlock);
containerSize = IntSize(box->availableWidth(), box->availableHeight()); // Already contains zooming information.
}
} else {
// Propagate the current zoomed image size to the image resource, otherwhise the image size will remain the same on-screen.
CachedImage* cachedImage = m_imageResource->cachedImage();
if (cachedImage && cachedImage->image()) {
containerSize = cachedImage->image()->size();
// FIXME: Remove unnecessary rounding when layout is off ints: webkit.org/b/63656
containerSize.setWidth(static_cast<LayoutUnit>(containerSize.width() * style()->effectiveZoom()));
containerSize.setHeight(static_cast<LayoutUnit>(containerSize.height() * style()->effectiveZoom()));
}
}
if (!containerSize.isEmpty()) {
m_imageResource->setContainerSizeForRenderer(containerSize);
const_cast<RenderImage*>(this)->updateIntrinsicSizeIfNeeded(containerSize, false);
}
return RenderReplaced::computeReplacedLogicalWidth(includeMaxWidth);
}
