nsresult
nsAbsoluteContainingBlock::ReflowAbsoluteFrame(nsIFrame* aDelegatingFrame,
nsPresContext* aPresContext,
const nsHTMLReflowState& aReflowState,
nscoord aContainingBlockWidth,
nscoord aContainingBlockHeight,
PRBool aConstrainHeight,
nsIFrame* aKidFrame,
nsReflowStatus& aStatus,
nsOverflowAreas* aOverflowAreas)
{
#ifdef DEBUG
if (nsBlockFrame::gNoisyReflow) {
nsFrame::IndentBy(stdout,nsBlockFrame::gNoiseIndent);
printf("abs pos ");
if (aKidFrame) {
nsAutoString name;
aKidFrame->GetFrameName(name);
printf("%s ", NS_LossyConvertUTF16toASCII(name).get());
}
char width[16];
char height[16];
PrettyUC(aReflowState.availableWidth, width);
PrettyUC(aReflowState.availableHeight, height);
printf(" a=%s,%s ", width, height);
PrettyUC(aReflowState.ComputedWidth(), width);
PrettyUC(aReflowState.ComputedHeight(), height);
printf("c=%s,%s \n", width, height);
}
AutoNoisyIndenter indent(nsBlockFrame::gNoisy);
#endif // DEBUG
// Store position and overflow rect so taht we can invalidate the correct
// area if the position changes
nsRect oldOverflowRect(aKidFrame->GetVisualOverflowRect() +
aKidFrame->GetPosition());
nsRect oldRect = aKidFrame->GetRect();
nsresult rv;
// Get the border values
const nsMargin& border = aReflowState.mStyleBorder->GetActualBorder();
nscoord availWidth = aContainingBlockWidth;
if (availWidth == -1) {
NS_ASSERTION(aReflowState.ComputedWidth() != NS_UNCONSTRAINEDSIZE,
"Must have a useful width _somewhere_");
availWidth =
aReflowState.ComputedWidth() + aReflowState.mComputedPadding.LeftRight();
}
nsHTMLReflowMetrics kidDesiredSize;
nsHTMLReflowState kidReflowState(aPresContext, aReflowState, aKidFrame,
nsSize(availWidth, NS_UNCONSTRAINEDSIZE),
aContainingBlockWidth,
aContainingBlockHeight);
// Send the WillReflow() notification and position the frame
aKidFrame->WillReflow(aPresContext);
PRBool constrainHeight = (aReflowState.availableHeight != NS_UNCONSTRAINEDSIZE)
&& aConstrainHeight
// Don't split if told not to (e.g. for fixed frames)
&& (aDelegatingFrame->GetType() != nsGkAtoms::positionedInlineFrame)
//XXX we don't handle splitting frames for inline absolute containing blocks yet
&& (aKidFrame->GetRect().y <= aReflowState.availableHeight);
// Don't split things below the fold. (Ideally we shouldn't *have*
// anything totally below the fold, but we can't position frames
// across next-in-flow breaks yet.
if (constrainHeight) {
kidReflowState.availableHeight = aReflowState.availableHeight - border.top
- kidReflowState.mComputedMargin.top;
if (NS_AUTOOFFSET != kidReflowState.mComputedOffsets.top)
kidReflowState.availableHeight -= kidReflowState.mComputedOffsets.top;
}
// Do the reflow
rv = aKidFrame->Reflow(aPresContext, kidDesiredSize, kidReflowState, aStatus);
// If we're solving for 'left' or 'top', then compute it now that we know the
// width/height
if ((NS_AUTOOFFSET == kidReflowState.mComputedOffsets.left) ||
(NS_AUTOOFFSET == kidReflowState.mComputedOffsets.top)) {
if (-1 == aContainingBlockWidth) {
// Get the containing block width/height
kidReflowState.ComputeContainingBlockRectangle(aPresContext,
&aReflowState,
aContainingBlockWidth,
aContainingBlockHeight);
}
if (NS_AUTOOFFSET == kidReflowState.mComputedOffsets.left) {
NS_ASSERTION(NS_AUTOOFFSET != kidReflowState.mComputedOffsets.right,
"Can't solve for both left and right");
kidReflowState.mComputedOffsets.left = aContainingBlockWidth -
kidReflowState.mComputedOffsets.right -
kidReflowState.mComputedMargin.right -
kidDesiredSize.width -
kidReflowState.mComputedMargin.left;
}
if (NS_AUTOOFFSET == kidReflowState.mComputedOffsets.top) {
kidReflowState.mComputedOffsets.top = aContainingBlockHeight -
kidReflowState.mComputedOffsets.bottom -
kidReflowState.mComputedMargin.bottom -
kidDesiredSize.height -
kidReflowState.mComputedMargin.top;
}
}
// Position the child relative to our padding edge
nsRect rect(border.left + kidReflowState.mComputedOffsets.left + kidReflowState.mComputedMargin.left,
border.top + kidReflowState.mComputedOffsets.top + kidReflowState.mComputedMargin.top,
kidDesiredSize.width, kidDesiredSize.height);
aKidFrame->SetRect(rect);
nsIView* view = aKidFrame->GetView();
if (view) {
// Size and position the view and set its opacity, visibility, content
// transparency, and clip
nsContainerFrame::SyncFrameViewAfterReflow(aPresContext, aKidFrame, view,
kidDesiredSize.VisualOverflow());
} else {
nsContainerFrame::PositionChildViews(aKidFrame);
}
if (oldRect.TopLeft() != rect.TopLeft() ||
(aDelegatingFrame->GetStateBits() & NS_FRAME_FIRST_REFLOW)) {
// The frame moved
aKidFrame->GetParent()->Invalidate(oldOverflowRect);
aKidFrame->InvalidateFrameSubtree();
} else if (oldRect.Size() != rect.Size()) {
// Invalidate the area where the frame changed size.
nscoord innerWidth = NS_MIN(oldRect.width, rect.width);
nscoord innerHeight = NS_MIN(oldRect.height, rect.height);
nscoord outerWidth = NS_MAX(oldRect.width, rect.width);
nscoord outerHeight = NS_MAX(oldRect.height, rect.height);
aKidFrame->GetParent()->Invalidate(
nsRect(rect.x + innerWidth, rect.y, outerWidth - innerWidth, outerHeight));
// Invalidate the horizontal strip
aKidFrame->GetParent()->Invalidate(
nsRect(rect.x, rect.y + innerHeight, outerWidth, outerHeight - innerHeight));
}
aKidFrame->DidReflow(aPresContext, &kidReflowState, NS_FRAME_REFLOW_FINISHED);
#ifdef DEBUG
if (nsBlockFrame::gNoisyReflow) {
nsFrame::IndentBy(stdout,nsBlockFrame::gNoiseIndent - 1);
printf("abs pos ");
if (aKidFrame) {
nsAutoString name;
aKidFrame->GetFrameName(name);
printf("%s ", NS_LossyConvertUTF16toASCII(name).get());
}
printf("%p rect=%d,%d,%d,%d\n", static_cast<void*>(aKidFrame),
rect.x, rect.y, rect.width, rect.height);
}
#endif
if (aOverflowAreas) {
aOverflowAreas->UnionWith(kidDesiredSize.mOverflowAreas + rect.TopLeft());
}
return rv;
}
void
nsAbsoluteContainingBlock::ReflowAbsoluteFrame(nsIFrame* aDelegatingFrame,
nsPresContext* aPresContext,
const nsHTMLReflowState& aReflowState,
const nsRect& aContainingBlock,
bool aConstrainHeight,
nsIFrame* aKidFrame,
nsReflowStatus& aStatus,
nsOverflowAreas* aOverflowAreas)
{
#ifdef DEBUG
if (nsBlockFrame::gNoisyReflow) {
nsFrame::IndentBy(stdout,nsBlockFrame::gNoiseIndent);
printf("abs pos ");
if (aKidFrame) {
nsAutoString name;
aKidFrame->GetFrameName(name);
printf("%s ", NS_LossyConvertUTF16toASCII(name).get());
}
char width[16];
char height[16];
PrettyUC(aReflowState.AvailableWidth(), width);
PrettyUC(aReflowState.AvailableHeight(), height);
printf(" a=%s,%s ", width, height);
PrettyUC(aReflowState.ComputedWidth(), width);
PrettyUC(aReflowState.ComputedHeight(), height);
printf("c=%s,%s \n", width, height);
}
AutoNoisyIndenter indent(nsBlockFrame::gNoisy);
#endif // DEBUG
nscoord availWidth = aContainingBlock.width;
if (availWidth == -1) {
NS_ASSERTION(aReflowState.ComputedWidth() != NS_UNCONSTRAINEDSIZE,
"Must have a useful width _somewhere_");
availWidth =
aReflowState.ComputedWidth() + aReflowState.ComputedPhysicalPadding().LeftRight();
}
nsHTMLReflowMetrics kidDesiredSize(aReflowState);
nsHTMLReflowState kidReflowState(aPresContext, aReflowState, aKidFrame,
nsSize(availWidth, NS_UNCONSTRAINEDSIZE),
aContainingBlock.width,
aContainingBlock.height);
// Send the WillReflow() notification and position the frame
aKidFrame->WillReflow(aPresContext);
// Get the border values
const nsMargin& border = aReflowState.mStyleBorder->GetComputedBorder();
bool constrainHeight = (aReflowState.AvailableHeight() != NS_UNCONSTRAINEDSIZE)
&& aConstrainHeight
// Don't split if told not to (e.g. for fixed frames)
&& (aDelegatingFrame->GetType() != nsGkAtoms::inlineFrame)
//XXX we don't handle splitting frames for inline absolute containing blocks yet
&& (aKidFrame->GetRect().y <= aReflowState.AvailableHeight());
// Don't split things below the fold. (Ideally we shouldn't *have*
// anything totally below the fold, but we can't position frames
// across next-in-flow breaks yet.
if (constrainHeight) {
kidReflowState.AvailableHeight() = aReflowState.AvailableHeight() - border.top
- kidReflowState.ComputedPhysicalMargin().top;
if (NS_AUTOOFFSET != kidReflowState.ComputedPhysicalOffsets().top)
kidReflowState.AvailableHeight() -= kidReflowState.ComputedPhysicalOffsets().top;
}
// Do the reflow
aKidFrame->Reflow(aPresContext, kidDesiredSize, kidReflowState, aStatus);
// If we're solving for 'left' or 'top', then compute it now that we know the
// width/height
if ((NS_AUTOOFFSET == kidReflowState.ComputedPhysicalOffsets().left) ||
(NS_AUTOOFFSET == kidReflowState.ComputedPhysicalOffsets().top)) {
nscoord aContainingBlockWidth = aContainingBlock.width;
nscoord aContainingBlockHeight = aContainingBlock.height;
if (-1 == aContainingBlockWidth) {
// Get the containing block width/height
kidReflowState.ComputeContainingBlockRectangle(aPresContext,
&aReflowState,
aContainingBlockWidth,
aContainingBlockHeight);
}
if (NS_AUTOOFFSET == kidReflowState.ComputedPhysicalOffsets().left) {
NS_ASSERTION(NS_AUTOOFFSET != kidReflowState.ComputedPhysicalOffsets().right,
"Can't solve for both left and right");
kidReflowState.ComputedPhysicalOffsets().left = aContainingBlockWidth -
kidReflowState.ComputedPhysicalOffsets().right -
kidReflowState.ComputedPhysicalMargin().right -
kidDesiredSize.Width() -
kidReflowState.ComputedPhysicalMargin().left;
}
if (NS_AUTOOFFSET == kidReflowState.ComputedPhysicalOffsets().top) {
kidReflowState.ComputedPhysicalOffsets().top = aContainingBlockHeight -
kidReflowState.ComputedPhysicalOffsets().bottom -
kidReflowState.ComputedPhysicalMargin().bottom -
kidDesiredSize.Height() -
kidReflowState.ComputedPhysicalMargin().top;
}
}
// Position the child relative to our padding edge
nsRect rect(border.left + kidReflowState.ComputedPhysicalOffsets().left + kidReflowState.ComputedPhysicalMargin().left,
border.top + kidReflowState.ComputedPhysicalOffsets().top + kidReflowState.ComputedPhysicalMargin().top,
kidDesiredSize.Width(), kidDesiredSize.Height());
// Offset the frame rect by the given origin of the absolute containing block.
// If the frame is auto-positioned on both sides of an axis, it will be
// positioned based on its containing block and we don't need to offset.
if (aContainingBlock.TopLeft() != nsPoint(0, 0)) {
if (!(kidReflowState.mStylePosition->mOffset.GetLeftUnit() == eStyleUnit_Auto &&
kidReflowState.mStylePosition->mOffset.GetRightUnit() == eStyleUnit_Auto)) {
rect.x += aContainingBlock.x;
}
if (!(kidReflowState.mStylePosition->mOffset.GetTopUnit() == eStyleUnit_Auto &&
kidReflowState.mStylePosition->mOffset.GetBottomUnit() == eStyleUnit_Auto)) {
rect.y += aContainingBlock.y;
}
}
aKidFrame->SetRect(rect);
nsView* view = aKidFrame->GetView();
if (view) {
// Size and position the view and set its opacity, visibility, content
// transparency, and clip
nsContainerFrame::SyncFrameViewAfterReflow(aPresContext, aKidFrame, view,
kidDesiredSize.VisualOverflow());
} else {
nsContainerFrame::PositionChildViews(aKidFrame);
}
aKidFrame->DidReflow(aPresContext, &kidReflowState, nsDidReflowStatus::FINISHED);
#ifdef DEBUG
if (nsBlockFrame::gNoisyReflow) {
nsFrame::IndentBy(stdout,nsBlockFrame::gNoiseIndent - 1);
printf("abs pos ");
if (aKidFrame) {
nsAutoString name;
aKidFrame->GetFrameName(name);
printf("%s ", NS_LossyConvertUTF16toASCII(name).get());
}
printf("%p rect=%d,%d,%d,%d\n", static_cast<void*>(aKidFrame),
rect.x, rect.y, rect.width, rect.height);
}
#endif
if (aOverflowAreas) {
aOverflowAreas->UnionWith(kidDesiredSize.mOverflowAreas + rect.TopLeft());
}
}
