void
nsLineBox::SetCombinedArea(const nsRect& aCombinedArea)
{
NS_ASSERTION(aCombinedArea.width >= 0, "illegal width for combined area");
NS_ASSERTION(aCombinedArea.height >= 0, "illegal height for combined area");
if (aCombinedArea != mBounds) {
if (mData) {
mData->mCombinedArea = aCombinedArea;
}
else {
if (IsInline()) {
mInlineData = new ExtraInlineData(aCombinedArea);
}
else {
mBlockData = new ExtraBlockData(aCombinedArea);
}
}
}
else {
if (mData) {
// Store away new value so that MaybeFreeData compares against
// the right value.
mData->mCombinedArea = aCombinedArea;
}
MaybeFreeData();
}
}
// XXX this might be too eager to free memory
void
nsLineBox::FreeFloats(nsFloatCacheFreeList& aFreeList)
{
NS_ABORT_IF_FALSE(IsInline(), "block line can't have floats");
if (IsInline() && mInlineData) {
if (mInlineData->mFloats.NotEmpty()) {
aFreeList.Append(mInlineData->mFloats);
}
MaybeFreeData();
}
}
bool
nsLineBox::RemoveFloat(nsIFrame* aFrame)
{
NS_ABORT_IF_FALSE(IsInline(), "block line can't have floats");
if (IsInline() && mInlineData) {
nsFloatCache* fc = mInlineData->mFloats.Find(aFrame);
if (fc) {
// Note: the placeholder is part of the line's child list
// and will be removed later.
mInlineData->mFloats.Remove(fc);
delete fc;
MaybeFreeData();
return true;
}
}
return false;
}
bool
nsLineBox::SetCarriedOutBottomMargin(nsCollapsingMargin aValue)
{
bool changed = false;
if (IsBlock()) {
if (!aValue.IsZero()) {
if (!mBlockData) {
mBlockData = new ExtraBlockData(mBounds);
}
changed = aValue != mBlockData->mCarriedOutBottomMargin;
mBlockData->mCarriedOutBottomMargin = aValue;
}
else if (mBlockData) {
changed = aValue != mBlockData->mCarriedOutBottomMargin;
mBlockData->mCarriedOutBottomMargin = aValue;
MaybeFreeData();
}
}
return changed;
}
