2 * Copyright 2006 The Android Open Source Project
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
8 #ifndef Sk1DPathEffect_DEFINED
9 #define Sk1DPathEffect_DEFINED
11 #include "SkPathEffect.h"
16 // This class is not exported to java.
17 class SK_API Sk1DPathEffect : public SkPathEffect {
19 virtual bool filterPath(SkPath* dst, const SkPath& src,
20 SkStrokeRec*, const SkRect*) const SK_OVERRIDE;
23 /** Called at the start of each contour, returns the initial offset
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
32 virtual SkScalar next(SkPath* dst, SkScalar dist, SkPathMeasure&) const = 0;
35 typedef SkPathEffect INHERITED;
38 class SK_API SkPath1DPathEffect : public Sk1DPathEffect {
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
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
55 SkPath1DPathEffect(const SkPath& path, SkScalar advance, SkScalar phase, Style);
57 virtual bool filterPath(SkPath*, const SkPath&,
58 SkStrokeRec*, const SkRect*) const SK_OVERRIDE;
60 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkPath1DPathEffect)
63 SkPath1DPathEffect(SkReadBuffer& buffer);
64 virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;
66 // overrides from Sk1DPathEffect
67 virtual SkScalar begin(SkScalar contourLength) const SK_OVERRIDE;
68 virtual SkScalar next(SkPath*, SkScalar, SkPathMeasure&) const SK_OVERRIDE;
71 SkPath fPath; // copied from constructor
72 SkScalar fAdvance; // copied from constructor
73 SkScalar fInitialOffset; // computed from phase
74 Style fStyle; // copied from constructor
76 typedef Sk1DPathEffect INHERITED;