summaryrefslogtreecommitdiffstats
path: root/layout/svg/SVGMaskFrame.h
diff options
context:
space:
mode:
Diffstat (limited to 'layout/svg/SVGMaskFrame.h')
-rw-r--r--layout/svg/SVGMaskFrame.h111
1 files changed, 111 insertions, 0 deletions
diff --git a/layout/svg/SVGMaskFrame.h b/layout/svg/SVGMaskFrame.h
new file mode 100644
index 0000000000..ee97415459
--- /dev/null
+++ b/layout/svg/SVGMaskFrame.h
@@ -0,0 +1,111 @@
+/* -*- 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/. */
+
+#ifndef LAYOUT_SVG_SVGMASKFRAME_H_
+#define LAYOUT_SVG_SVGMASKFRAME_H_
+
+#include "mozilla/Attributes.h"
+#include "mozilla/RefPtr.h"
+#include "mozilla/SVGContainerFrame.h"
+#include "mozilla/gfx/2D.h"
+#include "gfxPattern.h"
+#include "gfxMatrix.h"
+
+class gfxContext;
+
+namespace mozilla {
+class PresShell;
+} // namespace mozilla
+
+nsIFrame* NS_NewSVGMaskFrame(mozilla::PresShell* aPresShell,
+ mozilla::ComputedStyle* aStyle);
+
+namespace mozilla {
+
+class SVGMaskFrame final : public SVGContainerFrame {
+ friend nsIFrame* ::NS_NewSVGMaskFrame(mozilla::PresShell* aPresShell,
+ ComputedStyle* aStyle);
+
+ using Matrix = gfx::Matrix;
+ using SourceSurface = gfx::SourceSurface;
+ using imgDrawingParams = image::imgDrawingParams;
+
+ protected:
+ explicit SVGMaskFrame(ComputedStyle* aStyle, nsPresContext* aPresContext)
+ : SVGContainerFrame(aStyle, aPresContext, kClassID), mInUse(false) {
+ AddStateBits(NS_FRAME_IS_NONDISPLAY);
+ }
+
+ public:
+ NS_DECL_FRAMEARENA_HELPERS(SVGMaskFrame)
+
+ struct MaskParams {
+ gfx::DrawTarget* dt;
+ nsIFrame* maskedFrame;
+ const gfxMatrix& toUserSpace;
+ float opacity;
+ StyleMaskMode maskMode;
+ imgDrawingParams& imgParams;
+
+ explicit MaskParams(gfx::DrawTarget* aDt, nsIFrame* aMaskedFrame,
+ const gfxMatrix& aToUserSpace, float aOpacity,
+ StyleMaskMode aMaskMode, imgDrawingParams& aImgParams)
+ : dt(aDt),
+ maskedFrame(aMaskedFrame),
+ toUserSpace(aToUserSpace),
+ opacity(aOpacity),
+ maskMode(aMaskMode),
+ imgParams(aImgParams) {}
+ };
+
+ // SVGMaskFrame method:
+
+ /**
+ * Generate a mask surface for the target frame.
+ *
+ * The return surface can be null, it's the caller's responsibility to
+ * null-check before dereferencing.
+ */
+ already_AddRefed<SourceSurface> GetMaskForMaskedFrame(MaskParams& aParams);
+
+ gfxRect GetMaskArea(nsIFrame* aMaskedFrame);
+
+ nsresult AttributeChanged(int32_t aNameSpaceID, nsAtom* aAttribute,
+ int32_t aModType) override;
+
+#ifdef DEBUG
+ void Init(nsIContent* aContent, nsContainerFrame* aParent,
+ nsIFrame* aPrevInFlow) override;
+#endif
+
+ void BuildDisplayList(nsDisplayListBuilder* aBuilder,
+ const nsDisplayListSet& aLists) override {}
+
+#ifdef DEBUG_FRAME_DUMP
+ nsresult GetFrameName(nsAString& aResult) const override {
+ return MakeFrameName(u"SVGMask"_ns, aResult);
+ }
+#endif
+
+ private:
+ /**
+ * If the mask element transforms its children due to
+ * maskContentUnits="objectBoundingBox" being set on it, this function
+ * returns the resulting transform.
+ */
+ gfxMatrix GetMaskTransform(nsIFrame* aMaskedFrame);
+
+ gfxMatrix mMatrixForChildren;
+ // recursion prevention flag
+ bool mInUse;
+
+ // SVGContainerFrame methods:
+ gfxMatrix GetCanvasTM() override;
+};
+
+} // namespace mozilla
+
+#endif // LAYOUT_SVG_SVGMASKFRAME_H_