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-rw-r--r--layout/svg/nsSVGAFrame.cpp147
1 files changed, 147 insertions, 0 deletions
diff --git a/layout/svg/nsSVGAFrame.cpp b/layout/svg/nsSVGAFrame.cpp
new file mode 100644
index 000000000..54ec8958c
--- /dev/null
+++ b/layout/svg/nsSVGAFrame.cpp
@@ -0,0 +1,147 @@
+/* -*- 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 "gfxMatrix.h"
+#include "mozilla/dom/SVGAElement.h"
+#include "nsAutoPtr.h"
+#include "nsSVGContainerFrame.h"
+#include "nsSVGIntegrationUtils.h"
+#include "nsSVGUtils.h"
+#include "SVGLengthList.h"
+
+using namespace mozilla;
+
+class nsSVGAFrame : public nsSVGDisplayContainerFrame
+{
+ friend nsIFrame*
+ NS_NewSVGAFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
+protected:
+ explicit nsSVGAFrame(nsStyleContext* aContext)
+ : nsSVGDisplayContainerFrame(aContext) {}
+
+public:
+ NS_DECL_FRAMEARENA_HELPERS
+
+#ifdef DEBUG
+ virtual void Init(nsIContent* aContent,
+ nsContainerFrame* aParent,
+ nsIFrame* aPrevInFlow) override;
+#endif
+
+ // nsIFrame:
+ virtual nsresult AttributeChanged(int32_t aNameSpaceID,
+ nsIAtom* aAttribute,
+ int32_t aModType) override;
+
+ /**
+ * Get the "type" of the frame
+ *
+ * @see nsGkAtoms::svgAFrame
+ */
+ virtual nsIAtom* GetType() const override;
+
+#ifdef DEBUG_FRAME_DUMP
+ virtual nsresult GetFrameName(nsAString& aResult) const override
+ {
+ return MakeFrameName(NS_LITERAL_STRING("SVGA"), aResult);
+ }
+#endif
+ // nsISVGChildFrame interface:
+ virtual void NotifySVGChanged(uint32_t aFlags) override;
+
+ // nsSVGContainerFrame methods:
+ virtual gfxMatrix GetCanvasTM() override;
+
+private:
+ nsAutoPtr<gfxMatrix> mCanvasTM;
+};
+
+//----------------------------------------------------------------------
+// Implementation
+
+nsIFrame*
+NS_NewSVGAFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
+{
+ return new (aPresShell) nsSVGAFrame(aContext);
+}
+
+NS_IMPL_FRAMEARENA_HELPERS(nsSVGAFrame)
+
+//----------------------------------------------------------------------
+// nsIFrame methods
+#ifdef DEBUG
+void
+nsSVGAFrame::Init(nsIContent* aContent,
+ nsContainerFrame* aParent,
+ nsIFrame* aPrevInFlow)
+{
+ NS_ASSERTION(aContent->IsSVGElement(nsGkAtoms::a),
+ "Trying to construct an SVGAFrame for a "
+ "content element that doesn't support the right interfaces");
+
+ nsSVGDisplayContainerFrame::Init(aContent, aParent, aPrevInFlow);
+}
+#endif /* DEBUG */
+
+nsresult
+nsSVGAFrame::AttributeChanged(int32_t aNameSpaceID,
+ nsIAtom* aAttribute,
+ int32_t aModType)
+{
+ if (aNameSpaceID == kNameSpaceID_None &&
+ aAttribute == nsGkAtoms::transform) {
+ // 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.
+ NotifySVGChanged(TRANSFORM_CHANGED);
+ }
+
+ return NS_OK;
+}
+
+nsIAtom *
+nsSVGAFrame::GetType() const
+{
+ return nsGkAtoms::svgAFrame;
+}
+
+//----------------------------------------------------------------------
+// nsISVGChildFrame methods
+
+void
+nsSVGAFrame::NotifySVGChanged(uint32_t aFlags)
+{
+ MOZ_ASSERT(aFlags & (TRANSFORM_CHANGED | COORD_CONTEXT_CHANGED),
+ "Invalidation logic may need adjusting");
+
+ if (aFlags & TRANSFORM_CHANGED) {
+ // make sure our cached transform matrix gets (lazily) updated
+ mCanvasTM = nullptr;
+ }
+
+ nsSVGDisplayContainerFrame::NotifySVGChanged(aFlags);
+}
+
+//----------------------------------------------------------------------
+// nsSVGContainerFrame methods:
+
+gfxMatrix
+nsSVGAFrame::GetCanvasTM()
+{
+ if (!mCanvasTM) {
+ NS_ASSERTION(GetParent(), "null parent");
+
+ nsSVGContainerFrame *parent = static_cast<nsSVGContainerFrame*>(GetParent());
+ dom::SVGAElement *content = static_cast<dom::SVGAElement*>(mContent);
+
+ gfxMatrix tm = content->PrependLocalTransformsTo(parent->GetCanvasTM());
+
+ mCanvasTM = new gfxMatrix(tm);
+ }
+
+ return *mCanvasTM;
+}