void
ImageDocument::ShrinkToFit()
{
if (!mImageContent) {
return;
}
if (GetZoomLevel() != mOriginalZoomLevel && mImageIsResized &&
!nsContentUtils::IsChildOfSameType(this)) {
return;
}
// Keep image content alive while changing the attributes.
nsCOMPtr<nsIContent> imageContent = mImageContent;
nsCOMPtr<nsIDOMHTMLImageElement> image = do_QueryInterface(mImageContent);
image->SetWidth(std::max(1, NSToCoordFloor(GetRatio() * mImageWidth)));
image->SetHeight(std::max(1, NSToCoordFloor(GetRatio() * mImageHeight)));
// The view might have been scrolled when zooming in, scroll back to the
// origin now that we're showing a shrunk-to-window version.
ScrollImageTo(0, 0, false);
if (!mImageContent) {
// ScrollImageTo flush destroyed our content.
return;
}
SetModeClass(eShrinkToFit);
mImageIsResized = true;
UpdateTitleAndCharset();
}
void
ImageDocument::ShrinkToFit()
{
if (!mImageContent) {
return;
}
if (GetZoomLevel() != mOriginalZoomLevel && mImageIsResized &&
!nsContentUtils::IsChildOfSameType(this)) {
// If we're zoomed, so that we don't maintain the invariant that
// mImageIsResized if and only if its displayed width/height fit in
// mVisibleWidth/mVisibleHeight, then we may need to switch to/from the
// overflowingVertical class here, because our viewport size may have
// changed and we don't plan to adjust the image size to compensate. Since
// mImageIsResized it has a "height" attribute set, and we can just get the
// displayed image height by getting .height on the HTMLImageElement.
HTMLImageElement* img = HTMLImageElement::FromContent(mImageContent);
uint32_t imageHeight = img->Height();
nsDOMTokenList* classList = img->ClassList();
ErrorResult ignored;
if (imageHeight > mVisibleHeight) {
classList->Add(NS_LITERAL_STRING("overflowingVertical"), ignored);
} else {
classList->Remove(NS_LITERAL_STRING("overflowingVertical"), ignored);
}
ignored.SuppressException();
return;
}
// Keep image content alive while changing the attributes.
nsCOMPtr<Element> imageContent = mImageContent;
nsCOMPtr<nsIDOMHTMLImageElement> image = do_QueryInterface(imageContent);
image->SetWidth(std::max(1, NSToCoordFloor(GetRatio() * mImageWidth)));
image->SetHeight(std::max(1, NSToCoordFloor(GetRatio() * mImageHeight)));
// The view might have been scrolled when zooming in, scroll back to the
// origin now that we're showing a shrunk-to-window version.
ScrollImageTo(0, 0, false);
if (!mImageContent) {
// ScrollImageTo flush destroyed our content.
return;
}
SetModeClass(eShrinkToFit);
mImageIsResized = true;
UpdateTitleAndCharset();
}
