NS_IMETHODIMP
nsSVGForeignObjectFrame::Reflow(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
NS_ABORT_IF_FALSE(!(GetStateBits() & NS_STATE_SVG_NONDISPLAY_CHILD),
"Should not have been called");
// Only InvalidateAndScheduleBoundsUpdate marks us with NS_FRAME_IS_DIRTY,
// so if that bit is still set we still have a resize pending. If we hit
// this assertion, then we should get the presShell to skip reflow roots
// that have a dirty parent since a reflow is going to come via the
// reflow root's parent anyway.
NS_ASSERTION(!(GetStateBits() & NS_FRAME_IS_DIRTY),
"Reflowing while a resize is pending is wasteful");
// UpdateBounds makes sure mRect is up to date before we're called.
NS_ASSERTION(!aReflowState.parentReflowState,
"should only get reflow from being reflow root");
NS_ASSERTION(aReflowState.ComputedWidth() == GetSize().width &&
aReflowState.ComputedHeight() == GetSize().height,
"reflow roots should be reflowed at existing size and "
"svg.css should ensure we have no padding/border/margin");
DoReflow();
aDesiredSize.width = aReflowState.ComputedWidth();
aDesiredSize.height = aReflowState.ComputedHeight();
aDesiredSize.SetOverflowAreasToDesiredBounds();
aStatus = NS_FRAME_COMPLETE;
return NS_OK;
}
void
nsSVGForeignObjectFrame::MaybeReflowFromOuterSVGFrame()
{
// If IsDisabled() is true, then we know that our DoReflow() call will return
// early, leaving us with a marked-dirty but not-reflowed kid. That'd be bad;
// it'd mean that all future calls to this method would be doomed to take the
// NS_FRAME_IS_DIRTY early-return below. To avoid that problem, we need to
// bail out *before* we mark our kid as dirty.
if (IsDisabled()) {
return;
}
nsIFrame* kid = GetFirstChild(nsnull);
// If we're already scheduled to reflow (if we or our kid is dirty) we don't
// want to reflow now or else our presShell will do extra work trying to
// reflow us a second time. (It will also complain if it finds that a reflow
// root scheduled for reflow isn't dirty).
if (kid->GetStateBits() & NS_FRAME_IS_DIRTY) {
return;
}
kid->AddStateBits(NS_FRAME_IS_DIRTY); // we must be fully marked dirty
if (kid->GetStateBits() & NS_FRAME_HAS_DIRTY_CHILDREN) {
return;
}
// Make sure to not allow interrupts if we're not being reflown as a root
nsPresContext::InterruptPreventer noInterrupts(PresContext());
DoReflow();
}
NS_IMETHODIMP
nsSVGForeignObjectFrame::Reflow(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
// InitialUpdate and AttributeChanged make sure mRect is up to date before
// we're called (UpdateCoveredRegion sets mRect).
NS_ASSERTION(!aReflowState.parentReflowState,
"should only get reflow from being reflow root");
NS_ASSERTION(aReflowState.ComputedWidth() == GetSize().width &&
aReflowState.ComputedHeight() == GetSize().height,
"reflow roots should be reflowed at existing size and "
"svg.css should ensure we have no padding/border/margin");
DoReflow();
aDesiredSize.width = aReflowState.ComputedWidth();
aDesiredSize.height = aReflowState.ComputedHeight();
aDesiredSize.SetOverflowAreasToDesiredBounds();
aStatus = NS_FRAME_COMPLETE;
return NS_OK;
}
void
nsSVGForeignObjectFrame::UpdateBounds()
{
NS_ASSERTION(nsSVGUtils::OuterSVGIsCallingUpdateBounds(this),
"This call is probaby a wasteful mistake");
NS_ABORT_IF_FALSE(!(GetStateBits() & NS_STATE_SVG_NONDISPLAY_CHILD),
"UpdateBounds mechanism not designed for this");
if (!nsSVGUtils::NeedsUpdatedBounds(this)) {
return;
}
// We update mRect before the DoReflow call so that DoReflow uses the
// correct dimensions:
float x, y, w, h;
static_cast<nsSVGForeignObjectElement*>(mContent)->
GetAnimatedLengthValues(&x, &y, &w, &h, nsnull);
// If mRect's width or height are negative, reflow blows up! We must clamp!
if (w < 0.0f) w = 0.0f;
if (h < 0.0f) h = 0.0f;
// GetCanvasTM includes the x,y translation
mRect = nsLayoutUtils::RoundGfxRectToAppRect(
gfxRect(0.0, 0.0, w, h),
PresContext()->AppUnitsPerCSSPixel());
mCoveredRegion = ToCanvasBounds(gfxRect(0.0, 0.0, w, h), GetCanvasTM(), PresContext());
// Since we'll invalidate our entire area at the end of this method, we
// empty our cached dirty regions to prevent FlushDirtyRegion under DoReflow
// from wasting time invalidating:
mSameDocDirtyRegion.SetEmpty();
mSubDocDirtyRegion.SetEmpty();
// Fully mark our kid dirty so that it gets resized if necessary
// (NS_FRAME_HAS_DIRTY_CHILDREN isn't enough in that case):
nsIFrame* kid = GetFirstPrincipalChild();
kid->AddStateBits(NS_FRAME_IS_DIRTY);
// Make sure to not allow interrupts if we're not being reflown as a root:
nsPresContext::InterruptPreventer noInterrupts(PresContext());
DoReflow();
// Now unset the various reflow bits:
mState &= ~(NS_FRAME_FIRST_REFLOW | NS_FRAME_IS_DIRTY |
NS_FRAME_HAS_DIRTY_CHILDREN);
if (!(GetParent()->GetStateBits() & NS_FRAME_FIRST_REFLOW)) {
// We only invalidate if our outer-<svg> has already had its
// initial reflow (since if it hasn't, its entire area will be
// invalidated when it gets that initial reflow):
nsSVGUtils::InvalidateBounds(this, true);
}
}
NS_IMETHODIMP
nsLeafFrame::Reflow(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aMetrics,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
NS_FRAME_TRACE(NS_FRAME_TRACE_CALLS,
("enter nsLeafFrame::Reflow: aMaxSize=%d,%d",
aReflowState.availableWidth, aReflowState.availableHeight));
NS_PRECONDITION(mState & NS_FRAME_IN_REFLOW, "frame is not in reflow");
DoReflow(aPresContext, aMetrics, aReflowState, aStatus);
FinishAndStoreOverflow(&aMetrics);
return NS_OK;
}
NS_IMETHODIMP nsImageLoader::OnStopRequest(imgIRequest *aRequest,
bool aLastPart)
{
if (!mFrame)
return NS_ERROR_FAILURE;
if (!mRequest) {
// We're in the middle of a paint anyway
return NS_OK;
}
// Take requested actions
if (mActions & ACTION_REFLOW_ON_LOAD) {
DoReflow();
}
if (mActions & ACTION_REDRAW_ON_LOAD) {
DoRedraw(nsnull);
}
return NS_OK;
}
NS_IMETHODIMP
nsSVGForeignObjectFrame::InitialUpdate()
{
NS_ASSERTION(GetStateBits() & NS_FRAME_FIRST_REFLOW,
"Yikes! We've been called already! Hopefully we weren't called "
"before our nsSVGOuterSVGFrame's initial Reflow()!!!");
UpdateCoveredRegion();
// Make sure to not allow interrupts if we're not being reflown as a root
nsPresContext::InterruptPreventer noInterrupts(PresContext());
DoReflow();
NS_ASSERTION(!(mState & NS_FRAME_IN_REFLOW),
"We don't actually participate in reflow");
// Do unset the various reflow bits, though.
mState &= ~(NS_FRAME_FIRST_REFLOW | NS_FRAME_IS_DIRTY |
NS_FRAME_HAS_DIRTY_CHILDREN);
return NS_OK;
}