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gecko/layout/svg/nsSVGPathGeometryFrame.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
// Main header first:
#include "nsSVGPathGeometryFrame.h"
// Keep others in (case-insensitive) order:
#include "gfxContext.h"
#include "gfxPlatform.h"
#include "gfxSVGGlyphs.h"
#include "nsDisplayList.h"
#include "nsGkAtoms.h"
#include "nsRenderingContext.h"
#include "nsSVGEffects.h"
#include "nsSVGIntegrationUtils.h"
#include "nsSVGMarkerFrame.h"
#include "nsSVGPathGeometryElement.h"
#include "nsSVGUtils.h"
#include "SVGAnimatedTransformList.h"
#include "SVGGraphicsElement.h"
using namespace mozilla;
//----------------------------------------------------------------------
// Implementation
nsIFrame*
NS_NewSVGPathGeometryFrame(nsIPresShell* aPresShell,
nsStyleContext* aContext)
{
return new (aPresShell) nsSVGPathGeometryFrame(aContext);
}
NS_IMPL_FRAMEARENA_HELPERS(nsSVGPathGeometryFrame)
//----------------------------------------------------------------------
// nsQueryFrame methods
NS_QUERYFRAME_HEAD(nsSVGPathGeometryFrame)
NS_QUERYFRAME_ENTRY(nsISVGChildFrame)
NS_QUERYFRAME_ENTRY(nsSVGPathGeometryFrame)
NS_QUERYFRAME_TAIL_INHERITING(nsSVGPathGeometryFrameBase)
//----------------------------------------------------------------------
// Display list item:
class nsDisplaySVGPathGeometry : public nsDisplayItem {
public:
nsDisplaySVGPathGeometry(nsDisplayListBuilder* aBuilder,
nsSVGPathGeometryFrame* aFrame)
: nsDisplayItem(aBuilder, aFrame)
{
MOZ_COUNT_CTOR(nsDisplaySVGPathGeometry);
NS_ABORT_IF_FALSE(aFrame, "Must have a frame!");
}
#ifdef NS_BUILD_REFCNT_LOGGING
virtual ~nsDisplaySVGPathGeometry() {
MOZ_COUNT_DTOR(nsDisplaySVGPathGeometry);
}
#endif
NS_DISPLAY_DECL_NAME("nsDisplaySVGPathGeometry", TYPE_SVG_PATH_GEOMETRY)
virtual void HitTest(nsDisplayListBuilder* aBuilder, const nsRect& aRect,
HitTestState* aState, nsTArray<nsIFrame*> *aOutFrames);
virtual void Paint(nsDisplayListBuilder* aBuilder,
nsRenderingContext* aCtx);
};
void
nsDisplaySVGPathGeometry::HitTest(nsDisplayListBuilder* aBuilder, const nsRect& aRect,
HitTestState* aState, nsTArray<nsIFrame*> *aOutFrames)
{
nsSVGPathGeometryFrame *frame = static_cast<nsSVGPathGeometryFrame*>(mFrame);
nsPoint pointRelativeToReferenceFrame = aRect.Center();
// ToReferenceFrame() includes frame->GetPosition(), our user space position.
nsPoint userSpacePt = pointRelativeToReferenceFrame -
(ToReferenceFrame() - frame->GetPosition());
if (frame->GetFrameForPoint(userSpacePt)) {
aOutFrames->AppendElement(frame);
}
}
void
nsDisplaySVGPathGeometry::Paint(nsDisplayListBuilder* aBuilder,
nsRenderingContext* aCtx)
{
// ToReferenceFrame includes our mRect offset, but painting takes
// account of that too. To avoid double counting, we subtract that
// here.
nsPoint offset = ToReferenceFrame() - mFrame->GetPosition();
aCtx->PushState();
aCtx->Translate(offset);
static_cast<nsSVGPathGeometryFrame*>(mFrame)->PaintSVG(aCtx, nullptr);
aCtx->PopState();
}
//----------------------------------------------------------------------
// nsIFrame methods
NS_IMETHODIMP
nsSVGPathGeometryFrame::AttributeChanged(int32_t aNameSpaceID,
nsIAtom* aAttribute,
int32_t aModType)
{
// We don't invalidate for transform changes (the layers code does that).
// Also note that SVGTransformableElement::GetAttributeChangeHint will
// return nsChangeHint_UpdateOverflow for "transform" attribute changes
// and cause DoApplyRenderingChangeToTree to make the SchedulePaint call.
if (aNameSpaceID == kNameSpaceID_None &&
(static_cast<nsSVGPathGeometryElement*>
(mContent)->AttributeDefinesGeometry(aAttribute))) {
nsSVGEffects::InvalidateRenderingObservers(this);
nsSVGUtils::ScheduleReflowSVG(this);
}
return NS_OK;
}
/* virtual */ void
nsSVGPathGeometryFrame::DidSetStyleContext(nsStyleContext* aOldStyleContext)
{
nsSVGPathGeometryFrameBase::DidSetStyleContext(aOldStyleContext);
// XXX: we'd like to use the style_hint mechanism and the
// ContentStateChanged/AttributeChanged functions for style changes
// to get slightly finer granularity, but unfortunately the
// style_hints don't map very well onto svg. Here seems to be the
// best place to deal with style changes:
nsSVGEffects::InvalidateRenderingObservers(this);
nsSVGUtils::ScheduleReflowSVG(this);
}
nsIAtom *
nsSVGPathGeometryFrame::GetType() const
{
return nsGkAtoms::svgPathGeometryFrame;
}
bool
nsSVGPathGeometryFrame::IsSVGTransformed(gfxMatrix *aOwnTransform,
gfxMatrix *aFromParentTransform) const
{
bool foundTransform = false;
// Check if our parent has children-only transforms:
nsIFrame *parent = GetParent();
if (parent &&
parent->IsFrameOfType(nsIFrame::eSVG | nsIFrame::eSVGContainer)) {
foundTransform = static_cast<nsSVGContainerFrame*>(parent)->
HasChildrenOnlyTransform(aFromParentTransform);
}
nsSVGElement *content = static_cast<nsSVGElement*>(mContent);
nsSVGAnimatedTransformList* transformList =
content->GetAnimatedTransformList();
if ((transformList && transformList->HasTransform()) ||
content->GetAnimateMotionTransform()) {
if (aOwnTransform) {
*aOwnTransform = content->PrependLocalTransformsTo(gfxMatrix(),
nsSVGElement::eUserSpaceToParent);
}
foundTransform = true;
}
return foundTransform;
}
void
nsSVGPathGeometryFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsRect& aDirtyRect,
const nsDisplayListSet& aLists)
{
if (!static_cast<const nsSVGElement*>(mContent)->HasValidDimensions()) {
return;
}
aLists.Content()->AppendNewToTop(
new (aBuilder) nsDisplaySVGPathGeometry(aBuilder, this));
}
//----------------------------------------------------------------------
// nsISVGChildFrame methods
NS_IMETHODIMP
nsSVGPathGeometryFrame::PaintSVG(nsRenderingContext *aContext,
const nsIntRect *aDirtyRect)
{
if (!StyleVisibility()->IsVisible())
return NS_OK;
uint32_t paintOrder = StyleSVG()->mPaintOrder;
if (paintOrder == NS_STYLE_PAINT_ORDER_NORMAL) {
Render(aContext, eRenderFill | eRenderStroke);
PaintMarkers(aContext);
} else {
while (paintOrder) {
uint32_t component =
paintOrder & ((1 << NS_STYLE_PAINT_ORDER_BITWIDTH) - 1);
switch (component) {
case NS_STYLE_PAINT_ORDER_FILL:
Render(aContext, eRenderFill);
break;
case NS_STYLE_PAINT_ORDER_STROKE:
Render(aContext, eRenderStroke);
break;
case NS_STYLE_PAINT_ORDER_MARKERS:
PaintMarkers(aContext);
break;
}
paintOrder >>= NS_STYLE_PAINT_ORDER_BITWIDTH;
}
}
return NS_OK;
}
NS_IMETHODIMP_(nsIFrame*)
nsSVGPathGeometryFrame::GetFrameForPoint(const nsPoint &aPoint)
{
gfxMatrix canvasTM = GetCanvasTM(FOR_HIT_TESTING);
if (canvasTM.IsSingular()) {
return nullptr;
}
uint16_t fillRule, hitTestFlags;
if (GetStateBits() & NS_STATE_SVG_CLIPPATH_CHILD) {
hitTestFlags = SVG_HIT_TEST_FILL;
fillRule = GetClipRule();
} else {
hitTestFlags = GetHitTestFlags();
// XXX once bug 614732 is fixed, aPoint won't need any conversion in order
// to compare it with mRect.
nsPoint point =
nsSVGUtils::TransformOuterSVGPointToChildFrame(aPoint, canvasTM, PresContext());
if (!hitTestFlags || ((hitTestFlags & SVG_HIT_TEST_CHECK_MRECT) &&
!mRect.Contains(point)))
return nullptr;
fillRule = StyleSVG()->mFillRule;
}
bool isHit = false;
nsRefPtr<gfxContext> tmpCtx =
new gfxContext(gfxPlatform::GetPlatform()->ScreenReferenceSurface());
GeneratePath(tmpCtx, canvasTM);
gfxPoint userSpacePoint =
tmpCtx->DeviceToUser(gfxPoint(PresContext()->AppUnitsToGfxUnits(aPoint.x),
PresContext()->AppUnitsToGfxUnits(aPoint.y)));
if (fillRule == NS_STYLE_FILL_RULE_EVENODD)
tmpCtx->SetFillRule(gfxContext::FILL_RULE_EVEN_ODD);
else
tmpCtx->SetFillRule(gfxContext::FILL_RULE_WINDING);
if (hitTestFlags & SVG_HIT_TEST_FILL)
isHit = tmpCtx->PointInFill(userSpacePoint);
if (!isHit && (hitTestFlags & SVG_HIT_TEST_STROKE)) {
nsSVGUtils::SetupCairoStrokeHitGeometry(this, tmpCtx);
isHit = tmpCtx->PointInStroke(userSpacePoint);
}
if (isHit && nsSVGUtils::HitTestClip(this, aPoint))
return this;
return nullptr;
}
NS_IMETHODIMP_(nsRect)
nsSVGPathGeometryFrame::GetCoveredRegion()
{
return nsSVGUtils::TransformFrameRectToOuterSVG(
mRect, GetCanvasTM(FOR_OUTERSVG_TM), PresContext());
}
void
nsSVGPathGeometryFrame::ReflowSVG()
{
NS_ASSERTION(nsSVGUtils::OuterSVGIsCallingReflowSVG(this),
"This call is probably a wasteful mistake");
NS_ABORT_IF_FALSE(!(GetStateBits() & NS_STATE_SVG_NONDISPLAY_CHILD),
"ReflowSVG mechanism not designed for this");
if (!nsSVGUtils::NeedsReflowSVG(this)) {
return;
}
uint32_t flags = nsSVGUtils::eBBoxIncludeFill |
nsSVGUtils::eBBoxIncludeStroke |
nsSVGUtils::eBBoxIncludeMarkers;
// Our "visual" overflow rect needs to be valid for building display lists
// for hit testing, which means that for certain values of 'pointer-events'
// it needs to include the geometry of the fill or stroke even when the fill/
// stroke don't actually render (e.g. when stroke="none" or
// stroke-opacity="0"). GetHitTestFlags() accounts for 'pointer-events'.
uint16_t hitTestFlags = GetHitTestFlags();
if ((hitTestFlags & SVG_HIT_TEST_FILL)) {
flags |= nsSVGUtils::eBBoxIncludeFillGeometry;
}
if ((hitTestFlags & SVG_HIT_TEST_STROKE)) {
flags |= nsSVGUtils::eBBoxIncludeStrokeGeometry;
}
// We'd like to just pass the identity matrix to GetBBoxContribution, but if
// this frame's user space size is _very_ large/small then the extents we
// obtain below might have overflowed or otherwise be broken. This would
// cause us to end up with a broken mRect and visual overflow rect and break
// painting of this frame. This is particularly noticeable if the transforms
// between us and our nsSVGOuterSVGFrame scale this frame to a reasonable
// size. To avoid this we sadly have to do extra work to account for the
// transforms between us and our nsSVGOuterSVGFrame, even though the
// overwhelming number of SVGs will never have this problem.
// XXX Will Azure eventually save us from having to do this?
gfxSize scaleFactors = GetCanvasTM(FOR_OUTERSVG_TM).ScaleFactors(true);
bool applyScaling = fabs(scaleFactors.width) >= 1e-6 &&
fabs(scaleFactors.height) >= 1e-6;
gfxMatrix scaling;
if (applyScaling) {
scaling.Scale(scaleFactors.width, scaleFactors.height);
}
gfxRect extent = GetBBoxContribution(scaling, flags);
if (applyScaling) {
extent.Scale(1 / scaleFactors.width, 1 / scaleFactors.height);
}
mRect = nsLayoutUtils::RoundGfxRectToAppRect(extent,
PresContext()->AppUnitsPerCSSPixel());
if (mState & NS_FRAME_FIRST_REFLOW) {
// Make sure we have our filter property (if any) before calling
// FinishAndStoreOverflow (subsequent filter changes are handled off
// nsChangeHint_UpdateEffects):
nsSVGEffects::UpdateEffects(this);
}
nsRect overflow = nsRect(nsPoint(0,0), mRect.Size());
nsOverflowAreas overflowAreas(overflow, overflow);
FinishAndStoreOverflow(overflowAreas, mRect.Size());
mState &= ~(NS_FRAME_FIRST_REFLOW | NS_FRAME_IS_DIRTY |
NS_FRAME_HAS_DIRTY_CHILDREN);
// Invalidate, but only if this is not our first reflow (since if it is our
// first reflow then we haven't had our first paint yet).
if (!(GetParent()->GetStateBits() & NS_FRAME_FIRST_REFLOW)) {
InvalidateFrame();
}
}
void
nsSVGPathGeometryFrame::NotifySVGChanged(uint32_t aFlags)
{
NS_ABORT_IF_FALSE(aFlags & (TRANSFORM_CHANGED | COORD_CONTEXT_CHANGED),
"Invalidation logic may need adjusting");
// Changes to our ancestors may affect how we render when we are rendered as
// part of our ancestor (specifically, if our coordinate context changes size
// and we have percentage lengths defining our geometry, then we need to be
// reflowed). However, ancestor changes cannot affect how we render when we
// are rendered as part of any rendering observers that we may have.
// Therefore no need to notify rendering observers here.
if ((aFlags & COORD_CONTEXT_CHANGED) &&
static_cast<nsSVGPathGeometryElement*>(mContent)->GeometryDependsOnCoordCtx()) {
nsSVGUtils::ScheduleReflowSVG(this);
}
}
SVGBBox
nsSVGPathGeometryFrame::GetBBoxContribution(const gfxMatrix &aToBBoxUserspace,
uint32_t aFlags)
{
SVGBBox bbox;
if (aToBBoxUserspace.IsSingular()) {
// XXX ReportToConsole
return bbox;
}
nsRefPtr<gfxContext> tmpCtx =
new gfxContext(gfxPlatform::GetPlatform()->ScreenReferenceSurface());
GeneratePath(tmpCtx, aToBBoxUserspace);
tmpCtx->IdentityMatrix();
// Be careful when replacing the following logic to get the fill and stroke
// extents independently (instead of computing the stroke extents from the
// path extents). You may think that you can just use the stroke extents if
// there is both a fill and a stroke. In reality it's necessary to calculate
// both the fill and stroke extents, and take the union of the two. There are
// two reasons for this:
//
// # Due to stroke dashing, in certain cases the fill extents could actually
// extend outside the stroke extents.
// # If the stroke is very thin, cairo won't paint any stroke, and so the
// stroke bounds that it will return will be empty.
gfxRect pathExtents = tmpCtx->GetUserPathExtent();
// Account for fill:
if ((aFlags & nsSVGUtils::eBBoxIncludeFillGeometry) ||
((aFlags & nsSVGUtils::eBBoxIncludeFill) &&
StyleSVG()->mFill.mType != eStyleSVGPaintType_None)) {
bbox = pathExtents;
}
// Account for stroke:
if ((aFlags & nsSVGUtils::eBBoxIncludeStrokeGeometry) ||
((aFlags & nsSVGUtils::eBBoxIncludeStroke) &&
nsSVGUtils::HasStroke(this))) {
// We can't use tmpCtx->GetUserStrokeExtent() since it doesn't work for
// device space extents. Instead we approximate the stroke extents from
// pathExtents using PathExtentsToMaxStrokeExtents.
if (pathExtents.Width() <= 0 && pathExtents.Height() <= 0) {
// We have a zero length path, but it may still have non-empty stroke
// bounds depending on the value of stroke-linecap. We need to fix up
// pathExtents before it can be used with PathExtentsToMaxStrokeExtents
// though, because if pathExtents is empty, its position will not have
// been set. Happily we can use tmpCtx->GetUserStrokeExtent() to find
// the center point of the extents even though it gets the extents wrong.
nsSVGUtils::SetupCairoStrokeGeometry(this, tmpCtx);
pathExtents.MoveTo(tmpCtx->GetUserStrokeExtent().Center());
pathExtents.SizeTo(0, 0);
}
bbox.UnionEdges(nsSVGUtils::PathExtentsToMaxStrokeExtents(pathExtents,
this,
aToBBoxUserspace));
}
// Account for markers:
if ((aFlags & nsSVGUtils::eBBoxIncludeMarkers) != 0 &&
static_cast<nsSVGPathGeometryElement*>(mContent)->IsMarkable()) {
float strokeWidth = nsSVGUtils::GetStrokeWidth(this);
MarkerProperties properties = GetMarkerProperties(this);
if (properties.MarkersExist()) {
nsTArray<nsSVGMark> marks;
static_cast<nsSVGPathGeometryElement*>(mContent)->GetMarkPoints(&marks);
uint32_t num = marks.Length();
if (num) {
nsSVGMarkerFrame *frame = properties.GetMarkerStartFrame();
if (frame) {
SVGBBox mbbox =
frame->GetMarkBBoxContribution(aToBBoxUserspace, aFlags, this,
&marks[0], strokeWidth);
bbox.UnionEdges(mbbox);
}
frame = properties.GetMarkerMidFrame();
if (frame) {
for (uint32_t i = 1; i < num - 1; i++) {
SVGBBox mbbox =
frame->GetMarkBBoxContribution(aToBBoxUserspace, aFlags, this,
&marks[i], strokeWidth);
bbox.UnionEdges(mbbox);
}
}
frame = properties.GetMarkerEndFrame();
if (frame) {
SVGBBox mbbox =
frame->GetMarkBBoxContribution(aToBBoxUserspace, aFlags, this,
&marks[num-1], strokeWidth);
bbox.UnionEdges(mbbox);
}
}
}
}
return bbox;
}
//----------------------------------------------------------------------
// nsSVGGeometryFrame methods:
gfxMatrix
nsSVGPathGeometryFrame::GetCanvasTM(uint32_t aFor)
{
if (!(GetStateBits() & NS_STATE_SVG_NONDISPLAY_CHILD)) {
if ((aFor == FOR_PAINTING && NS_SVGDisplayListPaintingEnabled()) ||
(aFor == FOR_HIT_TESTING && NS_SVGDisplayListHitTestingEnabled())) {
return nsSVGIntegrationUtils::GetCSSPxToDevPxMatrix(this);
}
}
NS_ASSERTION(mParent, "null parent");
nsSVGContainerFrame *parent = static_cast<nsSVGContainerFrame*>(mParent);
dom::SVGGraphicsElement *content = static_cast<dom::SVGGraphicsElement*>(mContent);
return content->PrependLocalTransformsTo(parent->GetCanvasTM(aFor));
}
//----------------------------------------------------------------------
// nsSVGPathGeometryFrame methods:
nsSVGPathGeometryFrame::MarkerProperties
nsSVGPathGeometryFrame::GetMarkerProperties(nsSVGPathGeometryFrame *aFrame)
{
NS_ASSERTION(!aFrame->GetPrevContinuation(), "aFrame should be first continuation");
MarkerProperties result;
const nsStyleSVG *style = aFrame->StyleSVG();
result.mMarkerStart =
nsSVGEffects::GetMarkerProperty(style->mMarkerStart, aFrame,
nsSVGEffects::MarkerBeginProperty());
result.mMarkerMid =
nsSVGEffects::GetMarkerProperty(style->mMarkerMid, aFrame,
nsSVGEffects::MarkerMiddleProperty());
result.mMarkerEnd =
nsSVGEffects::GetMarkerProperty(style->mMarkerEnd, aFrame,
nsSVGEffects::MarkerEndProperty());
return result;
}
nsSVGMarkerFrame *
nsSVGPathGeometryFrame::MarkerProperties::GetMarkerStartFrame()
{
if (!mMarkerStart)
return nullptr;
return static_cast<nsSVGMarkerFrame *>
(mMarkerStart->GetReferencedFrame(nsGkAtoms::svgMarkerFrame, nullptr));
}
nsSVGMarkerFrame *
nsSVGPathGeometryFrame::MarkerProperties::GetMarkerMidFrame()
{
if (!mMarkerMid)
return nullptr;
return static_cast<nsSVGMarkerFrame *>
(mMarkerMid->GetReferencedFrame(nsGkAtoms::svgMarkerFrame, nullptr));
}
nsSVGMarkerFrame *
nsSVGPathGeometryFrame::MarkerProperties::GetMarkerEndFrame()
{
if (!mMarkerEnd)
return nullptr;
return static_cast<nsSVGMarkerFrame *>
(mMarkerEnd->GetReferencedFrame(nsGkAtoms::svgMarkerFrame, nullptr));
}
void
nsSVGPathGeometryFrame::Render(nsRenderingContext *aContext,
uint32_t aRenderComponents)
{
gfxContext *gfx = aContext->ThebesContext();
uint16_t renderMode = SVGAutoRenderState::GetRenderMode(aContext);
switch (StyleSVG()->mShapeRendering) {
case NS_STYLE_SHAPE_RENDERING_OPTIMIZESPEED:
case NS_STYLE_SHAPE_RENDERING_CRISPEDGES:
gfx->SetAntialiasMode(gfxContext::MODE_ALIASED);
break;
default:
gfx->SetAntialiasMode(gfxContext::MODE_COVERAGE);
break;
}
/* save/restore the state so we don't screw up the xform */
gfx->Save();
GeneratePath(gfx, GetCanvasTM(FOR_PAINTING));
if (renderMode != SVGAutoRenderState::NORMAL) {
NS_ABORT_IF_FALSE(renderMode == SVGAutoRenderState::CLIP ||
renderMode == SVGAutoRenderState::CLIP_MASK,
"Unknown render mode");
gfx->Restore();
if (GetClipRule() == NS_STYLE_FILL_RULE_EVENODD)
gfx->SetFillRule(gfxContext::FILL_RULE_EVEN_ODD);
else
gfx->SetFillRule(gfxContext::FILL_RULE_WINDING);
if (renderMode == SVGAutoRenderState::CLIP_MASK) {
gfx->SetColor(gfxRGBA(1.0f, 1.0f, 1.0f, 1.0f));
gfx->Fill();
gfx->NewPath();
}
return;
}
gfxTextObjectPaint *objectPaint =
(gfxTextObjectPaint*)aContext->GetUserData(&gfxTextObjectPaint::sUserDataKey);
if ((aRenderComponents & eRenderFill) &&
nsSVGUtils::SetupCairoFillPaint(this, gfx, objectPaint)) {
gfx->Fill();
}
if ((aRenderComponents & eRenderStroke) &&
nsSVGUtils::SetupCairoStroke(this, gfx, objectPaint)) {
gfx->Stroke();
}
gfx->NewPath();
gfx->Restore();
}
void
nsSVGPathGeometryFrame::GeneratePath(gfxContext* aContext,
const gfxMatrix &aTransform)
{
if (aTransform.IsSingular()) {
aContext->IdentityMatrix();
aContext->NewPath();
return;
}
aContext->MultiplyAndNudgeToIntegers(aTransform);
// Hack to let SVGPathData::ConstructPath know if we have square caps:
const nsStyleSVG* style = StyleSVG();
if (style->mStrokeLinecap == NS_STYLE_STROKE_LINECAP_SQUARE) {
aContext->SetLineCap(gfxContext::LINE_CAP_SQUARE);
}
aContext->NewPath();
static_cast<nsSVGPathGeometryElement*>(mContent)->ConstructPath(aContext);
}
void
nsSVGPathGeometryFrame::PaintMarkers(nsRenderingContext* aContext)
{
gfxTextObjectPaint *objectPaint =
(gfxTextObjectPaint*)aContext->GetUserData(&gfxTextObjectPaint::sUserDataKey);
if (static_cast<nsSVGPathGeometryElement*>(mContent)->IsMarkable()) {
MarkerProperties properties = GetMarkerProperties(this);
if (properties.MarkersExist()) {
float strokeWidth = nsSVGUtils::GetStrokeWidth(this, objectPaint);
nsTArray<nsSVGMark> marks;
static_cast<nsSVGPathGeometryElement*>
(mContent)->GetMarkPoints(&marks);
uint32_t num = marks.Length();
if (num) {
nsSVGMarkerFrame *frame = properties.GetMarkerStartFrame();
if (frame)
frame->PaintMark(aContext, this, &marks[0], strokeWidth);
frame = properties.GetMarkerMidFrame();
if (frame) {
for (uint32_t i = 1; i < num - 1; i++)
frame->PaintMark(aContext, this, &marks[i], strokeWidth);
}
frame = properties.GetMarkerEndFrame();
if (frame)
frame->PaintMark(aContext, this, &marks[num-1], strokeWidth);
}
}
}
}
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