Adding upstream version 110.0.1.upstream/110.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 240 insertions, 0 deletions

diff --git a/layout/svg/SVGMarkerFrame.cpp b/layout/svg/SVGMarkerFrame.cpp
new file mode 100644
index 0000000000..b8df132fb7
--- /dev/null
+++ b/layout/svg/SVGMarkerFrame.cpp
@@ -0,0 +1,240 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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 "SVGMarkerFrame.h"
+
+// Keep others in (case-insensitive) order:
+#include "gfxContext.h"
+#include "mozilla/PresShell.h"
+#include "mozilla/SVGGeometryFrame.h"
+#include "mozilla/SVGObserverUtils.h"
+#include "mozilla/SVGUtils.h"
+#include "mozilla/dom/SVGGeometryElement.h"
+#include "mozilla/dom/SVGMarkerElement.h"
+
+using namespace mozilla::dom;
+using namespace mozilla::gfx;
+using namespace mozilla::image;
+
+nsContainerFrame* NS_NewSVGMarkerFrame(mozilla::PresShell* aPresShell,
+                                       mozilla::ComputedStyle* aStyle) {
+  return new (aPresShell)
+      mozilla::SVGMarkerFrame(aStyle, aPresShell->GetPresContext());
+}
+
+namespace mozilla {
+
+NS_IMPL_FRAMEARENA_HELPERS(SVGMarkerFrame)
+
+//----------------------------------------------------------------------
+// nsIFrame methods:
+
+nsresult SVGMarkerFrame::AttributeChanged(int32_t aNameSpaceID,
+                                          nsAtom* 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)) {
+    SVGObserverUtils::InvalidateDirectRenderingObservers(this);
+  }
+
+  return SVGContainerFrame::AttributeChanged(aNameSpaceID, aAttribute,
+                                             aModType);
+}
+
+#ifdef DEBUG
+void SVGMarkerFrame::Init(nsIContent* aContent, nsContainerFrame* aParent,
+                          nsIFrame* aPrevInFlow) {
+  NS_ASSERTION(aContent->IsSVGElement(nsGkAtoms::marker),
+               "Content is not an SVG marker");
+
+  SVGContainerFrame::Init(aContent, aParent, aPrevInFlow);
+}
+#endif /* DEBUG */
+
+//----------------------------------------------------------------------
+// SVGContainerFrame methods:
+
+gfxMatrix SVGMarkerFrame::GetCanvasTM() {
+  NS_ASSERTION(mMarkedFrame, "null SVGGeometry frame");
+
+  if (mInUse2) {
+    // We're going to be bailing drawing the marker, so return an identity.
+    return gfxMatrix();
+  }
+
+  SVGMarkerElement* content = static_cast<SVGMarkerElement*>(GetContent());
+
+  mInUse2 = true;
+  gfxMatrix markedTM = mMarkedFrame->GetCanvasTM();
+  mInUse2 = false;
+
+  Matrix viewBoxTM = content->GetViewBoxTransform();
+
+  return ThebesMatrix(viewBoxTM * mMarkerTM) * markedTM;
+}
+
+static nsIFrame* GetAnonymousChildFrame(nsIFrame* aFrame) {
+  nsIFrame* kid = aFrame->PrincipalChildList().FirstChild();
+  MOZ_ASSERT(kid && kid->IsSVGMarkerAnonChildFrame(),
+             "expected to find anonymous child of marker frame");
+  return kid;
+}
+
+void SVGMarkerFrame::PaintMark(gfxContext& aContext,
+                               const gfxMatrix& aToMarkedFrameUserSpace,
+                               SVGGeometryFrame* aMarkedFrame,
+                               const SVGMark& aMark, float aStrokeWidth,
+                               imgDrawingParams& aImgParams) {
+  // 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;
+  }
+
+  AutoMarkerReferencer markerRef(this, aMarkedFrame);
+
+  SVGMarkerElement* marker = static_cast<SVGMarkerElement*>(GetContent());
+  if (!marker->HasValidDimensions()) {
+    return;
+  }
+
+  const SVGViewBox viewBox = marker->GetViewBox();
+
+  if (viewBox.width <= 0.0f || viewBox.height <= 0.0f) {
+    // We must disable rendering if the viewBox width or height are zero.
+    return;
+  }
+
+  Matrix viewBoxTM = marker->GetViewBoxTransform();
+
+  mMarkerTM = marker->GetMarkerTransform(aStrokeWidth, aMark);
+
+  gfxMatrix markTM = ThebesMatrix(viewBoxTM) * ThebesMatrix(mMarkerTM) *
+                     aToMarkedFrameUserSpace;
+
+  if (StyleDisplay()->IsScrollableOverflow()) {
+    aContext.Save();
+    gfxRect clipRect = SVGUtils::GetClipRectForFrame(
+        this, viewBox.x, viewBox.y, viewBox.width, viewBox.height);
+    SVGUtils::SetClipRect(&aContext, markTM, clipRect);
+  }
+
+  nsIFrame* kid = GetAnonymousChildFrame(this);
+  ISVGDisplayableFrame* SVGFrame = do_QueryFrame(kid);
+  // The CTM of each frame referencing us may be different.
+  SVGFrame->NotifySVGChanged(ISVGDisplayableFrame::TRANSFORM_CHANGED);
+  SVGUtils::PaintFrameWithEffects(kid, aContext, markTM, aImgParams);
+
+  if (StyleDisplay()->IsScrollableOverflow()) aContext.Restore();
+}
+
+SVGBBox SVGMarkerFrame::GetMarkBBoxContribution(const Matrix& aToBBoxUserspace,
+                                                uint32_t aFlags,
+                                                SVGGeometryFrame* aMarkedFrame,
+                                                const SVGMark& 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*>(GetContent());
+  if (!content->HasValidDimensions()) {
+    return bbox;
+  }
+
+  const SVGViewBox viewBox = content->GetViewBox();
+
+  if (viewBox.width <= 0.0f || viewBox.height <= 0.0f) {
+    return bbox;
+  }
+
+  mMarkerTM = content->GetMarkerTransform(aStrokeWidth, aMark);
+  Matrix viewBoxTM = content->GetViewBoxTransform();
+
+  Matrix tm = viewBoxTM * mMarkerTM * aToBBoxUserspace;
+
+  ISVGDisplayableFrame* 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 SVGMarkerFrame::SetParentCoordCtxProvider(SVGViewportElement* aContext) {
+  SVGMarkerElement* marker = static_cast<SVGMarkerElement*>(GetContent());
+  marker->SetParentCoordCtxProvider(aContext);
+}
+
+void SVGMarkerFrame::AppendDirectlyOwnedAnonBoxes(
+    nsTArray<OwnedAnonBox>& aResult) {
+  aResult.AppendElement(OwnedAnonBox(GetAnonymousChildFrame(this)));
+}
+
+//----------------------------------------------------------------------
+// helper class
+
+SVGMarkerFrame::AutoMarkerReferencer::AutoMarkerReferencer(
+    SVGMarkerFrame* aFrame, SVGGeometryFrame* aMarkedFrame)
+    : mFrame(aFrame) {
+  mFrame->mInUse = true;
+  mFrame->mMarkedFrame = aMarkedFrame;
+
+  SVGViewportElement* ctx =
+      static_cast<SVGElement*>(aMarkedFrame->GetContent())->GetCtx();
+  mFrame->SetParentCoordCtxProvider(ctx);
+}
+
+SVGMarkerFrame::AutoMarkerReferencer::~AutoMarkerReferencer() {
+  mFrame->SetParentCoordCtxProvider(nullptr);
+
+  mFrame->mMarkedFrame = nullptr;
+  mFrame->mInUse = false;
+}
+
+}  // namespace mozilla
+
+//----------------------------------------------------------------------
+// Implementation of SVGMarkerAnonChildFrame
+
+nsContainerFrame* NS_NewSVGMarkerAnonChildFrame(
+    mozilla::PresShell* aPresShell, mozilla::ComputedStyle* aStyle) {
+  return new (aPresShell)
+      mozilla::SVGMarkerAnonChildFrame(aStyle, aPresShell->GetPresContext());
+}
+
+namespace mozilla {
+
+NS_IMPL_FRAMEARENA_HELPERS(SVGMarkerAnonChildFrame)
+
+#ifdef DEBUG
+void SVGMarkerAnonChildFrame::Init(nsIContent* aContent,
+                                   nsContainerFrame* aParent,
+                                   nsIFrame* aPrevInFlow) {
+  MOZ_ASSERT(aParent->IsSVGMarkerFrame(), "Unexpected parent");
+  SVGDisplayContainerFrame::Init(aContent, aParent, aPrevInFlow);
+}
+#endif
+
+}  // namespace mozilla