1 files changed, 108 insertions, 0 deletions
diff --git a/layout/svg/SVGFEContainerFrame.cpp b/layout/svg/SVGFEContainerFrame.cpp
new file mode 100644
index 000000000..ef86470f2
--- /dev/null
+++ b/layout/svg/SVGFEContainerFrame.cpp
@@ -0,0 +1,108 @@
+/* -*- 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/. */
+
+// Keep in (case-insensitive) order:
+#include "nsContainerFrame.h"
+#include "nsGkAtoms.h"
+#include "nsIFrame.h"
+#include "nsLiteralString.h"
+#include "nsSVGEffects.h"
+#include "nsSVGFilters.h"
+
+/*
+ * This frame is used by filter primitive elements that
+ * have special child elements that provide parameters.
+ */
+class SVGFEContainerFrame : public nsContainerFrame
+{
+  friend nsIFrame*
+  NS_NewSVGFEContainerFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
+protected:
+  explicit SVGFEContainerFrame(nsStyleContext* aContext)
+    : nsContainerFrame(aContext)
+  {
+    AddStateBits(NS_FRAME_SVG_LAYOUT | NS_FRAME_IS_NONDISPLAY);
+  }
+
+public:
+  NS_DECL_FRAMEARENA_HELPERS
+
+  virtual bool IsFrameOfType(uint32_t aFlags) const override
+  {
+    return nsContainerFrame::IsFrameOfType(
+            aFlags & ~(nsIFrame::eSVG | nsIFrame::eSVGContainer));
+  }
+
+#ifdef DEBUG_FRAME_DUMP
+  virtual nsresult GetFrameName(nsAString& aResult) const override
+  {
+    return MakeFrameName(NS_LITERAL_STRING("SVGFEContainer"), aResult);
+  }
+#endif
+
+#ifdef DEBUG
+  virtual void Init(nsIContent*       aContent,
+                    nsContainerFrame* aParent,
+                    nsIFrame*         aPrevInFlow) override;
+#endif
+  /**
+   * Get the "type" of the frame
+   *
+   * @see nsGkAtoms::svgFEContainerFrame
+   */
+  virtual nsIAtom* GetType() const override;
+
+  virtual nsresult AttributeChanged(int32_t  aNameSpaceID,
+                                    nsIAtom* aAttribute,
+                                    int32_t  aModType) override;
+
+  virtual bool ComputeCustomOverflow(nsOverflowAreas& aOverflowAreas) override {
+    // We don't maintain a visual overflow rect
+    return false;
+  }
+};
+
+nsIFrame*
+NS_NewSVGFEContainerFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
+{
+  return new (aPresShell) SVGFEContainerFrame(aContext);
+}
+
+NS_IMPL_FRAMEARENA_HELPERS(SVGFEContainerFrame)
+
+#ifdef DEBUG
+void
+SVGFEContainerFrame::Init(nsIContent*       aContent,
+                          nsContainerFrame* aParent,
+                          nsIFrame*         aPrevInFlow)
+{
+  NS_ASSERTION(aContent->IsNodeOfType(nsINode::eFILTER),
+               "Trying to construct an SVGFEContainerFrame for a "
+               "content element that doesn't support the right interfaces");
+
+  nsContainerFrame::Init(aContent, aParent, aPrevInFlow);
+}
+#endif /* DEBUG */
+
+nsIAtom *
+SVGFEContainerFrame::GetType() const
+{
+  return nsGkAtoms::svgFEContainerFrame;
+}
+
+nsresult
+SVGFEContainerFrame::AttributeChanged(int32_t  aNameSpaceID,
+                                      nsIAtom* aAttribute,
+                                      int32_t  aModType)
+{
+  nsSVGFE *element = static_cast<nsSVGFE*>(mContent);
+  if (element->AttributeAffectsRendering(aNameSpaceID, aAttribute)) {
+    MOZ_ASSERT(GetParent()->GetType() == nsGkAtoms::svgFilterFrame,
+               "Observers observe the filter, so that's what we must invalidate");
+    nsSVGEffects::InvalidateDirectRenderingObservers(GetParent());
+  }
+
+  return nsContainerFrame::AttributeChanged(aNameSpaceID, aAttribute, aModType);
+}