SVGBBox
nsSVGDisplayContainerFrame::GetBBoxContribution(
const gfxMatrix &aToBBoxUserspace,
uint32_t aFlags)
{
SVGBBox bboxUnion;
nsIFrame* kid = mFrames.FirstChild();
while (kid) {
nsISVGChildFrame* svgKid = do_QueryFrame(kid);
if (svgKid) {
gfxMatrix transform = aToBBoxUserspace;
nsIContent *content = kid->GetContent();
if (content->IsSVG()) {
transform = static_cast<nsSVGElement*>(content)->
PrependLocalTransformsTo(aToBBoxUserspace);
}
// We need to include zero width/height vertical/horizontal lines, so we have
// to use UnionEdges.
bboxUnion.UnionEdges(svgKid->GetBBoxContribution(transform, aFlags));
}
kid = kid->GetNextSibling();
}
return bboxUnion;
}
SVGBBox
nsSVGDisplayContainerFrame::GetBBoxContribution(
const Matrix &aToBBoxUserspace,
uint32_t aFlags)
{
SVGBBox bboxUnion;
nsIFrame* kid = mFrames.FirstChild();
while (kid) {
nsIContent *content = kid->GetContent();
nsISVGChildFrame* svgKid = do_QueryFrame(kid);
// content could be a XUL element so check for an SVG element before casting
if (svgKid && (!content->IsSVG() ||
static_cast<const nsSVGElement*>(content)->HasValidDimensions())) {
gfxMatrix transform = gfx::ThebesMatrix(aToBBoxUserspace);
if (content->IsSVG()) {
transform = static_cast<nsSVGElement*>(content)->
PrependLocalTransformsTo(transform);
}
// We need to include zero width/height vertical/horizontal lines, so we have
// to use UnionEdges.
bboxUnion.UnionEdges(svgKid->GetBBoxContribution(gfx::ToMatrix(transform), aFlags));
}
kid = kid->GetNextSibling();
}
return bboxUnion;
}
SVGBBox
nsSVGMarkerFrame::GetMarkBBoxContribution(const gfxMatrix &aToBBoxUserspace,
uint32_t aFlags,
nsSVGPathGeometryFrame *aMarkedFrame,
const nsSVGMark *aMark,
float aStrokeWidth)
{
SVGBBox bbox;
// If the flag is set when we get here, it means this marker frame
// has already been used in calculating the current mark bbox, and
// the document has a marker reference loop.
if (mInUse)
return bbox;
AutoMarkerReferencer markerRef(this, aMarkedFrame);
SVGMarkerElement *content = static_cast<SVGMarkerElement*>(mContent);
const nsSVGViewBoxRect viewBox = content->GetViewBoxRect();
if (viewBox.width <= 0.0f || viewBox.height <= 0.0f) {
return bbox;
}
mStrokeWidth = aStrokeWidth;
mX = aMark->x;
mY = aMark->y;
mAutoAngle = aMark->angle;
mIsStart = aMark->type == nsSVGMark::eStart;
gfxMatrix markerTM =
content->GetMarkerTransform(mStrokeWidth, mX, mY, mAutoAngle, mIsStart);
gfxMatrix viewBoxTM = content->GetViewBoxTransform();
gfxMatrix tm = viewBoxTM * markerTM * aToBBoxUserspace;
for (nsIFrame* kid = mFrames.FirstChild();
kid;
kid = kid->GetNextSibling()) {
nsISVGChildFrame* child = do_QueryFrame(kid);
if (child) {
// When we're being called to obtain the invalidation area, we need to
// pass down all the flags so that stroke is included. However, once DOM
// getBBox() accepts flags, maybe we should strip some of those here?
// We need to include zero width/height vertical/horizontal lines, so we have
// to use UnionEdges.
bbox.UnionEdges(child->GetBBoxContribution(tm, aFlags));
}
}
return bbox;
}
SVGBBox
nsSVGInnerSVGFrame::GetBBoxContribution(const Matrix &aToBBoxUserspace,
uint32_t aFlags)
{
// XXXjwatt It seems like authors would want the result to be clipped by the
// viewport we establish if IsScrollableOverflow() is true. We should
// consider doing that. See bug 1350755.
SVGBBox bbox;
if (aFlags & nsSVGUtils::eForGetClientRects) {
// XXXjwatt For consistency with the old code this code includes the
// viewport we establish in the result, but only includes the bounds of our
// descendants if they are not clipped to that viewport. However, this is
// both inconsistent with Chrome and with the specs. See bug 1350755.
// Ideally getClientRects/getBoundingClientRect should be consistent with
// getBBox.
float x, y, w, h;
static_cast<SVGSVGElement*>(mContent)->
GetAnimatedLengthValues(&x, &y, &w, &h, nullptr);
if (w < 0.0f) w = 0.0f;
if (h < 0.0f) h = 0.0f;
Rect viewport(x, y, w, h);
bbox = aToBBoxUserspace.TransformBounds(viewport);
if (StyleDisplay()->IsScrollableOverflow()) {
return bbox;
}
// Else we're not clipping to our viewport so we fall through and include
// the bounds of our children.
}
SVGBBox descendantsBbox =
nsSVGDisplayContainerFrame::GetBBoxContribution(aToBBoxUserspace, aFlags);
bbox.UnionEdges(descendantsBbox);
return bbox;
}