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comparison: gfx/skia/trunk/include/effects/Sk1DPathEffect.h
gfx/skia/trunk/include/effects/Sk1DPathEffect.h
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- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:49ee7fe91345 |
|---|---|
| 1 /* | |
| 2 * Copyright 2006 The Android Open Source Project | |
| 3 * | |
| 4 * Use of this source code is governed by a BSD-style license that can be | |
| 5 * found in the LICENSE file. | |
| 6 */ | |
| 7 | |
| 8 #ifndef Sk1DPathEffect_DEFINED | |
| 9 #define Sk1DPathEffect_DEFINED | |
| 10 | |
| 11 #include "SkPathEffect.h" | |
| 12 #include "SkPath.h" | |
| 13 | |
| 14 class SkPathMeasure; | |
| 15 | |
| 16 // This class is not exported to java. | |
| 17 class SK_API Sk1DPathEffect : public SkPathEffect { | |
| 18 public: | |
| 19 virtual bool filterPath(SkPath* dst, const SkPath& src, | |
| 20 SkStrokeRec*, const SkRect*) const SK_OVERRIDE; | |
| 21 | |
| 22 protected: | |
| 23 /** Called at the start of each contour, returns the initial offset | |
| 24 into that contour. | |
| 25 */ | |
| 26 virtual SkScalar begin(SkScalar contourLength) const = 0; | |
| 27 /** Called with the current distance along the path, with the current matrix | |
| 28 for the point/tangent at the specified distance. | |
| 29 Return the distance to travel for the next call. If return <= 0, then that | |
| 30 contour is done. | |
| 31 */ | |
| 32 virtual SkScalar next(SkPath* dst, SkScalar dist, SkPathMeasure&) const = 0; | |
| 33 | |
| 34 private: | |
| 35 typedef SkPathEffect INHERITED; | |
| 36 }; | |
| 37 | |
| 38 class SK_API SkPath1DPathEffect : public Sk1DPathEffect { | |
| 39 public: | |
| 40 enum Style { | |
| 41 kTranslate_Style, // translate the shape to each position | |
| 42 kRotate_Style, // rotate the shape about its center | |
| 43 kMorph_Style, // transform each point, and turn lines into curves | |
| 44 | |
| 45 kStyleCount | |
| 46 }; | |
| 47 | |
| 48 /** Dash by replicating the specified path. | |
| 49 @param path The path to replicate (dash) | |
| 50 @param advance The space between instances of path | |
| 51 @param phase distance (mod advance) along path for its initial position | |
| 52 @param style how to transform path at each point (based on the current | |
| 53 position and tangent) | |
| 54 */ | |
| 55 static SkPath1DPathEffect* Create(const SkPath& path, SkScalar advance, SkScalar phase, | |
| 56 Style style) { | |
| 57 return SkNEW_ARGS(SkPath1DPathEffect, (path, advance, phase, style)); | |
| 58 } | |
| 59 | |
| 60 virtual bool filterPath(SkPath*, const SkPath&, | |
| 61 SkStrokeRec*, const SkRect*) const SK_OVERRIDE; | |
| 62 | |
| 63 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkPath1DPathEffect) | |
| 64 | |
| 65 protected: | |
| 66 SkPath1DPathEffect(SkReadBuffer& buffer); | |
| 67 virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE; | |
| 68 | |
| 69 // overrides from Sk1DPathEffect | |
| 70 virtual SkScalar begin(SkScalar contourLength) const SK_OVERRIDE; | |
| 71 virtual SkScalar next(SkPath*, SkScalar, SkPathMeasure&) const SK_OVERRIDE; | |
| 72 | |
| 73 #ifdef SK_SUPPORT_LEGACY_PUBLICEFFECTCONSTRUCTORS | |
| 74 public: | |
| 75 #endif | |
| 76 SkPath1DPathEffect(const SkPath& path, SkScalar advance, SkScalar phase, Style); | |
| 77 | |
| 78 private: | |
| 79 SkPath fPath; // copied from constructor | |
| 80 SkScalar fAdvance; // copied from constructor | |
| 81 SkScalar fInitialOffset; // computed from phase | |
| 82 Style fStyle; // copied from constructor | |
| 83 | |
| 84 typedef Sk1DPathEffect INHERITED; | |
| 85 }; | |
| 86 | |
| 87 #endif |
