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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /dom/svg/nsSVGPathDataParser.h
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'dom/svg/nsSVGPathDataParser.h')
-rw-r--r--dom/svg/nsSVGPathDataParser.h83
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diff --git a/dom/svg/nsSVGPathDataParser.h b/dom/svg/nsSVGPathDataParser.h
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+/* -*- 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 __NS_SVGPATHDATAPARSER_H__
+#define __NS_SVGPATHDATAPARSER_H__
+
+#include "mozilla/Attributes.h"
+#include "mozilla/gfx/Point.h"
+#include "nsSVGDataParser.h"
+
+namespace mozilla {
+class SVGPathData;
+} // namespace mozilla
+
+////////////////////////////////////////////////////////////////////////
+// nsSVGPathDataParser: a simple recursive descent parser that builds
+// DOMSVGPathSegs from path data strings. The grammar for path data
+// can be found in SVG CR 20001102, chapter 8.
+
+class nsSVGPathDataParser : public nsSVGDataParser
+{
+public:
+ nsSVGPathDataParser(const nsAString& aValue,
+ mozilla::SVGPathData* aList)
+ : nsSVGDataParser(aValue),
+ mPathSegList(aList)
+ {
+ MOZ_ASSERT(aList, "null path data");
+ }
+
+ bool Parse();
+
+private:
+
+ bool ParseCoordPair(float& aX, float& aY);
+ bool ParseFlag(bool& aFlag);
+
+ bool ParsePath();
+ bool IsStartOfSubPath() const;
+ bool ParseSubPath();
+
+ bool ParseSubPathElements();
+ bool ParseSubPathElement(char16_t aCommandType,
+ bool aAbsCoords);
+
+ bool ParseMoveto();
+ bool ParseClosePath();
+ bool ParseLineto(bool aAbsCoords);
+ bool ParseHorizontalLineto(bool aAbsCoords);
+ bool ParseVerticalLineto(bool aAbsCoords);
+ bool ParseCurveto(bool aAbsCoords);
+ bool ParseSmoothCurveto(bool aAbsCoords);
+ bool ParseQuadBezierCurveto(bool aAbsCoords);
+ bool ParseSmoothQuadBezierCurveto(bool aAbsCoords);
+ bool ParseEllipticalArc(bool aAbsCoords);
+
+ mozilla::SVGPathData * const mPathSegList;
+};
+
+class nsSVGArcConverter
+{
+ typedef mozilla::gfx::Point Point;
+
+public:
+ nsSVGArcConverter(const Point& from,
+ const Point& to,
+ const Point& radii,
+ double angle,
+ bool largeArcFlag,
+ bool sweepFlag);
+ bool GetNextSegment(Point* cp1, Point* cp2, Point* to);
+protected:
+ int32_t mNumSegs, mSegIndex;
+ double mTheta, mDelta, mT;
+ double mSinPhi, mCosPhi;
+ double mRx, mRy;
+ Point mFrom, mC;
+};
+
+#endif // __NS_SVGPATHDATAPARSER_H__