| /* |
| * Copyright 2006 The Android Open Source Project |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef Sk1DPathEffect_DEFINED |
| #define Sk1DPathEffect_DEFINED |
| |
| #include "SkPathEffect.h" |
| #include "SkPath.h" |
| |
| class SkPathMeasure; |
| |
| // This class is not exported to java. |
| class SK_API Sk1DPathEffect : public SkPathEffect { |
| public: |
| virtual bool filterPath(SkPath* dst, const SkPath& src, |
| SkStrokeRec*, const SkRect*) const SK_OVERRIDE; |
| |
| protected: |
| /** Called at the start of each contour, returns the initial offset |
| into that contour. |
| */ |
| virtual SkScalar begin(SkScalar contourLength) const = 0; |
| /** Called with the current distance along the path, with the current matrix |
| for the point/tangent at the specified distance. |
| Return the distance to travel for the next call. If return <= 0, then that |
| contour is done. |
| */ |
| virtual SkScalar next(SkPath* dst, SkScalar dist, SkPathMeasure&) const = 0; |
| |
| private: |
| typedef SkPathEffect INHERITED; |
| }; |
| |
| class SK_API SkPath1DPathEffect : public Sk1DPathEffect { |
| public: |
| enum Style { |
| kTranslate_Style, // translate the shape to each position |
| kRotate_Style, // rotate the shape about its center |
| kMorph_Style, // transform each point, and turn lines into curves |
| |
| kStyleCount |
| }; |
| |
| /** Dash by replicating the specified path. |
| @param path The path to replicate (dash) |
| @param advance The space between instances of path |
| @param phase distance (mod advance) along path for its initial position |
| @param style how to transform path at each point (based on the current |
| position and tangent) |
| */ |
| static SkPath1DPathEffect* Create(const SkPath& path, SkScalar advance, SkScalar phase, |
| Style style) { |
| return SkNEW_ARGS(SkPath1DPathEffect, (path, advance, phase, style)); |
| } |
| |
| virtual bool filterPath(SkPath*, const SkPath&, |
| SkStrokeRec*, const SkRect*) const SK_OVERRIDE; |
| |
| SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkPath1DPathEffect) |
| |
| protected: |
| SkPath1DPathEffect(const SkPath& path, SkScalar advance, SkScalar phase, Style); |
| #ifdef SK_SUPPORT_LEGACY_DEEPFLATTENING |
| explicit SkPath1DPathEffect(SkReadBuffer& buffer); |
| #endif |
| virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE; |
| |
| // overrides from Sk1DPathEffect |
| virtual SkScalar begin(SkScalar contourLength) const SK_OVERRIDE; |
| virtual SkScalar next(SkPath*, SkScalar, SkPathMeasure&) const SK_OVERRIDE; |
| |
| private: |
| SkPath fPath; // copied from constructor |
| SkScalar fAdvance; // copied from constructor |
| SkScalar fInitialOffset; // computed from phase |
| Style fStyle; // copied from constructor |
| |
| typedef Sk1DPathEffect INHERITED; |
| }; |
| |
| #endif |