зеркало из https://github.com/mozilla/gecko-dev.git
118 строки
3.8 KiB
C++
118 строки
3.8 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef MOZILLA_GFX_PATHCAPTURE_H_
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#define MOZILLA_GFX_PATHCAPTURE_H_
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#include "2D.h"
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#include <vector>
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#include <ostream>
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#include "PathHelpers.h"
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namespace mozilla {
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namespace gfx {
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class PathCapture;
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class PathBuilderCapture : public PathBuilder {
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public:
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MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(PathBuilderCapture, override)
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PathBuilderCapture(FillRule aFillRule, DrawTarget *aDT)
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: mFillRule(aFillRule), mDT(aDT) {}
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/* Move the current point in the path, any figure currently being drawn will
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* be considered closed during fill operations, however when stroking the
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* closing line segment will not be drawn.
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*/
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virtual void MoveTo(const Point &aPoint) override;
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/* Add a linesegment to the current figure */
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virtual void LineTo(const Point &aPoint) override;
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/* Add a cubic bezier curve to the current figure */
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virtual void BezierTo(const Point &aCP1, const Point &aCP2,
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const Point &aCP3) override;
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/* Add a quadratic bezier curve to the current figure */
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virtual void QuadraticBezierTo(const Point &aCP1, const Point &aCP2) override;
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/* Add an arc to the current figure */
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virtual void Arc(const Point &aOrigin, float aRadius, float aStartAngle,
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float aEndAngle, bool aAntiClockwise) override;
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/* Close the current figure, this will essentially generate a line segment
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* from the current point to the starting point for the current figure
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*/
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virtual void Close() override;
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/* Point the current subpath is at - or where the next subpath will start
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* if there is no active subpath.
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*/
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virtual Point CurrentPoint() const override;
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virtual already_AddRefed<Path> Finish() override;
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virtual BackendType GetBackendType() const override {
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return BackendType::CAPTURE;
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}
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private:
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friend class PathCapture;
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FillRule mFillRule;
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std::vector<PathOp> mPathOps;
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Point mCurrentPoint;
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RefPtr<DrawTarget> mDT;
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};
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class PathCapture : public Path {
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public:
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MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(PathCapture, override)
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PathCapture(const std::vector<PathOp> aOps, FillRule aFillRule,
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DrawTarget *aDT, const Point &aCurrentPoint)
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: mPathOps(aOps),
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mFillRule(aFillRule),
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mDT(aDT),
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mCurrentPoint(aCurrentPoint) {}
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virtual BackendType GetBackendType() const override {
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return BackendType::CAPTURE;
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}
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virtual already_AddRefed<PathBuilder> CopyToBuilder(
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FillRule aFillRule) const override;
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virtual already_AddRefed<PathBuilder> TransformedCopyToBuilder(
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const Matrix &aTransform, FillRule aFillRule) const override;
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virtual bool ContainsPoint(const Point &aPoint,
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const Matrix &aTransform) const override;
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virtual bool StrokeContainsPoint(const StrokeOptions &aStrokeOptions,
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const Point &aPoint,
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const Matrix &aTransform) const override;
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virtual Rect GetBounds(const Matrix &aTransform = Matrix()) const override;
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virtual Rect GetStrokedBounds(
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const StrokeOptions &aStrokeOptions,
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const Matrix &aTransform = Matrix()) const override;
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virtual void StreamToSink(PathSink *aSink) const override;
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virtual FillRule GetFillRule() const override { return mFillRule; }
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Path *GetRealizedPath() const;
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private:
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bool EnsureRealizedPath() const;
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mutable RefPtr<Path> mRealizedPath;
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std::vector<PathOp> mPathOps;
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FillRule mFillRule;
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RefPtr<DrawTarget> mDT;
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Point mCurrentPoint;
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};
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} // namespace gfx
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} // namespace mozilla
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#endif /* MOZILLA_GFX_PATHCAPTURE_H_ */
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