Add m-esr52 at 52.6.0

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
--- /dev/null
+++ 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;
+}