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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /layout/svg/nsSVGMarkerFrame.cpp
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'layout/svg/nsSVGMarkerFrame.cpp')
-rw-r--r--layout/svg/nsSVGMarkerFrame.cpp278
1 files changed, 278 insertions, 0 deletions
diff --git a/layout/svg/nsSVGMarkerFrame.cpp b/layout/svg/nsSVGMarkerFrame.cpp
new file mode 100644
index 000000000..93b76b17f
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+++ b/layout/svg/nsSVGMarkerFrame.cpp
@@ -0,0 +1,278 @@
+/* -*- 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 "nsSVGMarkerFrame.h"
+
+// Keep others in (case-insensitive) order:
+#include "gfxContext.h"
+#include "nsSVGEffects.h"
+#include "mozilla/dom/SVGMarkerElement.h"
+#include "nsSVGPathGeometryElement.h"
+#include "nsSVGPathGeometryFrame.h"
+
+using namespace mozilla::dom;
+using namespace mozilla::gfx;
+
+nsContainerFrame*
+NS_NewSVGMarkerFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
+{
+ return new (aPresShell) nsSVGMarkerFrame(aContext);
+}
+
+NS_IMPL_FRAMEARENA_HELPERS(nsSVGMarkerFrame)
+
+//----------------------------------------------------------------------
+// nsIFrame methods:
+
+nsresult
+nsSVGMarkerFrame::AttributeChanged(int32_t aNameSpaceID,
+ nsIAtom* aAttribute,
+ int32_t aModType)
+{
+ if (aNameSpaceID == kNameSpaceID_None &&
+ (aAttribute == nsGkAtoms::markerUnits ||
+ aAttribute == nsGkAtoms::refX ||
+ aAttribute == nsGkAtoms::refY ||
+ aAttribute == nsGkAtoms::markerWidth ||
+ aAttribute == nsGkAtoms::markerHeight ||
+ aAttribute == nsGkAtoms::orient ||
+ aAttribute == nsGkAtoms::preserveAspectRatio ||
+ aAttribute == nsGkAtoms::viewBox)) {
+ nsSVGEffects::InvalidateDirectRenderingObservers(this);
+ }
+
+ return nsSVGContainerFrame::AttributeChanged(aNameSpaceID,
+ aAttribute, aModType);
+}
+
+#ifdef DEBUG
+void
+nsSVGMarkerFrame::Init(nsIContent* aContent,
+ nsContainerFrame* aParent,
+ nsIFrame* aPrevInFlow)
+{
+ NS_ASSERTION(aContent->IsSVGElement(nsGkAtoms::marker), "Content is not an SVG marker");
+
+ nsSVGContainerFrame::Init(aContent, aParent, aPrevInFlow);
+}
+#endif /* DEBUG */
+
+nsIAtom *
+nsSVGMarkerFrame::GetType() const
+{
+ return nsGkAtoms::svgMarkerFrame;
+}
+
+//----------------------------------------------------------------------
+// nsSVGContainerFrame methods:
+
+gfxMatrix
+nsSVGMarkerFrame::GetCanvasTM()
+{
+ NS_ASSERTION(mMarkedFrame, "null nsSVGPathGeometry frame");
+
+ if (mInUse2) {
+ // We're going to be bailing drawing the marker, so return an identity.
+ return gfxMatrix();
+ }
+
+ SVGMarkerElement *content = static_cast<SVGMarkerElement*>(mContent);
+
+ mInUse2 = true;
+ gfxMatrix markedTM = mMarkedFrame->GetCanvasTM();
+ mInUse2 = false;
+
+ Matrix markerTM = content->GetMarkerTransform(mStrokeWidth, mX, mY,
+ mAutoAngle, mIsStart);
+ Matrix viewBoxTM = content->GetViewBoxTransform();
+
+ return ThebesMatrix(viewBoxTM * markerTM) * markedTM;
+}
+
+static nsIFrame*
+GetAnonymousChildFrame(nsIFrame* aFrame)
+{
+ nsIFrame* kid = aFrame->PrincipalChildList().FirstChild();
+ MOZ_ASSERT(kid && kid->GetType() == nsGkAtoms::svgMarkerAnonChildFrame,
+ "expected to find anonymous child of marker frame");
+ return kid;
+}
+
+nsresult
+nsSVGMarkerFrame::PaintMark(gfxContext& aContext,
+ const gfxMatrix& aToMarkedFrameUserSpace,
+ nsSVGPathGeometryFrame *aMarkedFrame,
+ nsSVGMark *aMark, float aStrokeWidth)
+{
+ // If the flag is set when we get here, it means this marker frame
+ // has already been used painting the current mark, and the document
+ // has a marker reference loop.
+ if (mInUse)
+ return NS_OK;
+
+ AutoMarkerReferencer markerRef(this, aMarkedFrame);
+
+ SVGMarkerElement *marker = static_cast<SVGMarkerElement*>(mContent);
+ if (!marker->HasValidDimensions()) {
+ return NS_OK;
+ }
+
+ const nsSVGViewBoxRect viewBox = marker->GetViewBoxRect();
+
+ if (viewBox.width <= 0.0f || viewBox.height <= 0.0f) {
+ // We must disable rendering if the viewBox width or height are zero.
+ return NS_OK;
+ }
+
+ mStrokeWidth = aStrokeWidth;
+ mX = aMark->x;
+ mY = aMark->y;
+ mAutoAngle = aMark->angle;
+ mIsStart = aMark->type == nsSVGMark::eStart;
+
+ Matrix viewBoxTM = marker->GetViewBoxTransform();
+
+ Matrix markerTM = marker->GetMarkerTransform(mStrokeWidth, mX, mY,
+ mAutoAngle, mIsStart);
+
+ gfxMatrix markTM = ThebesMatrix(viewBoxTM) * ThebesMatrix(markerTM) *
+ aToMarkedFrameUserSpace;
+
+ if (StyleDisplay()->IsScrollableOverflow()) {
+ aContext.Save();
+ gfxRect clipRect =
+ nsSVGUtils::GetClipRectForFrame(this, viewBox.x, viewBox.y,
+ viewBox.width, viewBox.height);
+ nsSVGUtils::SetClipRect(&aContext, markTM, clipRect);
+ }
+
+
+ nsIFrame* kid = GetAnonymousChildFrame(this);
+ nsISVGChildFrame* SVGFrame = do_QueryFrame(kid);
+ // The CTM of each frame referencing us may be different.
+ SVGFrame->NotifySVGChanged(nsISVGChildFrame::TRANSFORM_CHANGED);
+ DrawResult result = nsSVGUtils::PaintFrameWithEffects(kid, aContext, markTM);
+
+ if (StyleDisplay()->IsScrollableOverflow())
+ aContext.Restore();
+
+ return (result == DrawResult::SUCCESS) ? NS_OK : NS_ERROR_FAILURE;
+}
+
+SVGBBox
+nsSVGMarkerFrame::GetMarkBBoxContribution(const Matrix &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);
+ if (!content->HasValidDimensions()) {
+ return bbox;
+ }
+
+ 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;
+
+ Matrix markerTM =
+ content->GetMarkerTransform(mStrokeWidth, mX, mY, mAutoAngle, mIsStart);
+ Matrix viewBoxTM = content->GetViewBoxTransform();
+
+ Matrix tm = viewBoxTM * markerTM * aToBBoxUserspace;
+
+ nsISVGChildFrame* child = do_QueryFrame(GetAnonymousChildFrame(this));
+ // 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;
+}
+
+void
+nsSVGMarkerFrame::SetParentCoordCtxProvider(SVGSVGElement *aContext)
+{
+ SVGMarkerElement *marker = static_cast<SVGMarkerElement*>(mContent);
+ marker->SetParentCoordCtxProvider(aContext);
+}
+
+//----------------------------------------------------------------------
+// helper class
+
+nsSVGMarkerFrame::AutoMarkerReferencer::AutoMarkerReferencer(
+ nsSVGMarkerFrame *aFrame,
+ nsSVGPathGeometryFrame *aMarkedFrame
+ MOZ_GUARD_OBJECT_NOTIFIER_PARAM_IN_IMPL)
+ : mFrame(aFrame)
+{
+ MOZ_GUARD_OBJECT_NOTIFIER_INIT;
+ mFrame->mInUse = true;
+ mFrame->mMarkedFrame = aMarkedFrame;
+
+ SVGSVGElement *ctx =
+ static_cast<nsSVGElement*>(aMarkedFrame->GetContent())->GetCtx();
+ mFrame->SetParentCoordCtxProvider(ctx);
+}
+
+nsSVGMarkerFrame::AutoMarkerReferencer::~AutoMarkerReferencer()
+{
+ mFrame->SetParentCoordCtxProvider(nullptr);
+
+ mFrame->mMarkedFrame = nullptr;
+ mFrame->mInUse = false;
+}
+
+//----------------------------------------------------------------------
+// Implementation of nsSVGMarkerAnonChildFrame
+
+nsContainerFrame*
+NS_NewSVGMarkerAnonChildFrame(nsIPresShell* aPresShell,
+ nsStyleContext* aContext)
+{
+ return new (aPresShell) nsSVGMarkerAnonChildFrame(aContext);
+}
+
+NS_IMPL_FRAMEARENA_HELPERS(nsSVGMarkerAnonChildFrame)
+
+#ifdef DEBUG
+void
+nsSVGMarkerAnonChildFrame::Init(nsIContent* aContent,
+ nsContainerFrame* aParent,
+ nsIFrame* aPrevInFlow)
+{
+ MOZ_ASSERT(aParent->GetType() == nsGkAtoms::svgMarkerFrame,
+ "Unexpected parent");
+ nsSVGDisplayContainerFrame::Init(aContent, aParent, aPrevInFlow);
+}
+#endif
+
+nsIAtom *
+nsSVGMarkerAnonChildFrame::GetType() const
+{
+ return nsGkAtoms::svgMarkerAnonChildFrame;
+}