void
ImageDocument::UpdateSizeFromLayout()
{
// Pull an updated size from the content frame to account for any size
// change due to CSS properties like |image-orientation|.
Element* contentElement = mImageContent->AsElement();
if (!contentElement) {
return;
}
nsIFrame* contentFrame = contentElement->GetPrimaryFrame(Flush_Frames);
if (!contentFrame) {
return;
}
nsIntSize oldSize(mImageWidth, mImageHeight);
IntrinsicSize newSize = contentFrame->GetIntrinsicSize();
if (newSize.width.GetUnit() == eStyleUnit_Coord) {
mImageWidth = nsPresContext::AppUnitsToFloatCSSPixels(newSize.width.GetCoordValue());
}
if (newSize.height.GetUnit() == eStyleUnit_Coord) {
mImageHeight = nsPresContext::AppUnitsToFloatCSSPixels(newSize.height.GetCoordValue());
}
// Ensure that our information about overflow is up-to-date if needed.
if (mImageWidth != oldSize.width || mImageHeight != oldSize.height) {
CheckOverflowing(false);
}
}
NS_IMETHODIMP
ImageDocument::HandleEvent(nsIDOMEvent* aEvent)
{
nsAutoString eventType;
aEvent->GetType(eventType);
if (eventType.EqualsLiteral("resize")) {
CheckOverflowing(false);
}
else if (eventType.EqualsLiteral("click") && mClickResizingEnabled) {
ResetZoomLevel();
mShouldResize = true;
if (mImageIsResized) {
int32_t x = 0, y = 0;
nsCOMPtr<nsIDOMMouseEvent> event(do_QueryInterface(aEvent));
if (event) {
event->GetClientX(&x);
event->GetClientY(&y);
int32_t left = 0, top = 0;
nsCOMPtr<nsIDOMHTMLElement> htmlElement =
do_QueryInterface(mImageContent);
htmlElement->GetOffsetLeft(&left);
htmlElement->GetOffsetTop(&top);
x -= left;
y -= top;
}
mShouldResize = false;
RestoreImageTo(x, y);
}
else if (mImageIsOverflowing) {
ShrinkToFit();
}
}
return NS_OK;
}
