gfx/skia/trunk/include/effects/Sk1DPathEffect.h@6474c204b198 (annotated)
gfx/skia/trunk/include/effects/Sk1DPathEffect.h
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /* |
| michael@0 | 2 | * Copyright 2006 The Android Open Source Project |
| michael@0 | 3 | * |
| michael@0 | 4 | * Use of this source code is governed by a BSD-style license that can be |
| michael@0 | 5 | * found in the LICENSE file. |
| michael@0 | 6 | */ |
| michael@0 | 7 | |
| michael@0 | 8 | #ifndef Sk1DPathEffect_DEFINED |
| michael@0 | 9 | #define Sk1DPathEffect_DEFINED |
| michael@0 | 10 | |
| michael@0 | 11 | #include "SkPathEffect.h" |
| michael@0 | 12 | #include "SkPath.h" |
| michael@0 | 13 | |
| michael@0 | 14 | class SkPathMeasure; |
| michael@0 | 15 | |
| michael@0 | 16 | // This class is not exported to java. |
| michael@0 | 17 | class SK_API Sk1DPathEffect : public SkPathEffect { |
| michael@0 | 18 | public: |
| michael@0 | 19 | virtual bool filterPath(SkPath* dst, const SkPath& src, |
| michael@0 | 20 | SkStrokeRec*, const SkRect*) const SK_OVERRIDE; |
| michael@0 | 21 | |
| michael@0 | 22 | protected: |
| michael@0 | 23 | /** Called at the start of each contour, returns the initial offset |
| michael@0 | 24 | into that contour. |
| michael@0 | 25 | */ |
| michael@0 | 26 | virtual SkScalar begin(SkScalar contourLength) const = 0; |
| michael@0 | 27 | /** Called with the current distance along the path, with the current matrix |
| michael@0 | 28 | for the point/tangent at the specified distance. |
| michael@0 | 29 | Return the distance to travel for the next call. If return <= 0, then that |
| michael@0 | 30 | contour is done. |
| michael@0 | 31 | */ |
| michael@0 | 32 | virtual SkScalar next(SkPath* dst, SkScalar dist, SkPathMeasure&) const = 0; |
| michael@0 | 33 | |
| michael@0 | 34 | private: |
| michael@0 | 35 | typedef SkPathEffect INHERITED; |
| michael@0 | 36 | }; |
| michael@0 | 37 | |
| michael@0 | 38 | class SK_API SkPath1DPathEffect : public Sk1DPathEffect { |
| michael@0 | 39 | public: |
| michael@0 | 40 | enum Style { |
| michael@0 | 41 | kTranslate_Style, // translate the shape to each position |
| michael@0 | 42 | kRotate_Style, // rotate the shape about its center |
| michael@0 | 43 | kMorph_Style, // transform each point, and turn lines into curves |
| michael@0 | 44 | |
| michael@0 | 45 | kStyleCount |
| michael@0 | 46 | }; |
| michael@0 | 47 | |
| michael@0 | 48 | /** Dash by replicating the specified path. |
| michael@0 | 49 | @param path The path to replicate (dash) |
| michael@0 | 50 | @param advance The space between instances of path |
| michael@0 | 51 | @param phase distance (mod advance) along path for its initial position |
| michael@0 | 52 | @param style how to transform path at each point (based on the current |
| michael@0 | 53 | position and tangent) |
| michael@0 | 54 | */ |
| michael@0 | 55 | static SkPath1DPathEffect* Create(const SkPath& path, SkScalar advance, SkScalar phase, |
| michael@0 | 56 | Style style) { |
| michael@0 | 57 | return SkNEW_ARGS(SkPath1DPathEffect, (path, advance, phase, style)); |
| michael@0 | 58 | } |
| michael@0 | 59 | |
| michael@0 | 60 | virtual bool filterPath(SkPath*, const SkPath&, |
| michael@0 | 61 | SkStrokeRec*, const SkRect*) const SK_OVERRIDE; |
| michael@0 | 62 | |
| michael@0 | 63 | SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkPath1DPathEffect) |
| michael@0 | 64 | |
| michael@0 | 65 | protected: |
| michael@0 | 66 | SkPath1DPathEffect(SkReadBuffer& buffer); |
| michael@0 | 67 | virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE; |
| michael@0 | 68 | |
| michael@0 | 69 | // overrides from Sk1DPathEffect |
| michael@0 | 70 | virtual SkScalar begin(SkScalar contourLength) const SK_OVERRIDE; |
| michael@0 | 71 | virtual SkScalar next(SkPath*, SkScalar, SkPathMeasure&) const SK_OVERRIDE; |
| michael@0 | 72 | |
| michael@0 | 73 | #ifdef SK_SUPPORT_LEGACY_PUBLICEFFECTCONSTRUCTORS |
| michael@0 | 74 | public: |
| michael@0 | 75 | #endif |
| michael@0 | 76 | SkPath1DPathEffect(const SkPath& path, SkScalar advance, SkScalar phase, Style); |
| michael@0 | 77 | |
| michael@0 | 78 | private: |
| michael@0 | 79 | SkPath fPath; // copied from constructor |
| michael@0 | 80 | SkScalar fAdvance; // copied from constructor |
| michael@0 | 81 | SkScalar fInitialOffset; // computed from phase |
| michael@0 | 82 | Style fStyle; // copied from constructor |
| michael@0 | 83 | |
| michael@0 | 84 | typedef Sk1DPathEffect INHERITED; |
| michael@0 | 85 | }; |
| michael@0 | 86 | |
| michael@0 | 87 | #endif |
