void RenderImage::computeIntrinsicRatioInformation(FloatSize& intrinsicSize, double& intrinsicRatio, bool& isPercentageIntrinsicSize) const
{
RenderReplaced::computeIntrinsicRatioInformation(intrinsicSize, intrinsicRatio, isPercentageIntrinsicSize);
// Our intrinsicSize is empty if we're rendering generated images with relative width/height. Figure out the right intrinsic size to use.
if (intrinsicSize.isEmpty() && (m_imageResource->imageHasRelativeWidth() || m_imageResource->imageHasRelativeHeight())) {
RenderObject* containingBlock = isOutOfFlowPositioned() ? container() : this->containingBlock();
if (containingBlock->isBox()) {
RenderBox* box = toRenderBox(containingBlock);
intrinsicSize.setWidth(box->availableLogicalWidth());
intrinsicSize.setHeight(box->availableLogicalHeight(IncludeMarginBorderPadding));
}
}
// Don't compute an intrinsic ratio to preserve historical WebKit behavior if we're painting alt text and/or a broken image.
if (m_imageResource && m_imageResource->errorOccurred()) {
intrinsicRatio = 1;
return;
}
}
void RenderImage::computeIntrinsicRatioInformation(FloatSize& intrinsicSize, double& intrinsicRatio) const
{
RenderReplaced::computeIntrinsicRatioInformation(intrinsicSize, intrinsicRatio);
// Our intrinsicSize is empty if we're rendering generated images with relative width/height. Figure out the right intrinsic size to use.
if (intrinsicSize.isEmpty() && (m_imageResource->imageHasRelativeWidth() || m_imageResource->imageHasRelativeHeight())) {
RenderObject* containingBlock = isOutOfFlowPositioned() ? container() : this->containingBlock();
if (containingBlock->isBox()) {
RenderBox* box = toRenderBox(containingBlock);
intrinsicSize.setWidth(box->availableLogicalWidth().toFloat());
intrinsicSize.setHeight(box->availableLogicalHeight(IncludeMarginBorderPadding).toFloat());
}
}
// Don't compute an intrinsic ratio to preserve historical WebKit behavior if we're painting alt text and/or a broken image.
// Video is excluded from this behavior because video elements have a default aspect ratio that a failed poster image load should not override.
if (m_imageResource && m_imageResource->errorOccurred() && !isVideo()) {
intrinsicRatio = 1;
return;
}
}