skia2/include/effects/Sk2DPathEffect.h
mtklein 7e44bb1916 Remove macros that make it look like it's a good idea to not be able to flatten.
There are only a handful of SkFlattenables that are not flattenable.  That
there are any seems highly illogical.  To make this look less like a normal
thing, this removes both macros that marked SkFlattenables as non-flattenable
(in slightly different ways).

The handful of SkFlattenables in our codebase that can't be flattened now
assert violently that they can't be flattened.  They're internal or
part of animator... places where we'll never actually flatten them.

TestLooper and DummyRasterizer were so trivial that I just made them flattenable.

BUG=skia:

Review URL: https://codereview.chromium.org/841753002
2015-01-07 09:06:08 -08:00

103 lines
3.1 KiB
C++

/*
* 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 Sk2DPathEffect_DEFINED
#define Sk2DPathEffect_DEFINED
#include "SkPath.h"
#include "SkPathEffect.h"
#include "SkMatrix.h"
class SK_API Sk2DPathEffect : public SkPathEffect {
public:
virtual bool filterPath(SkPath*, const SkPath&, SkStrokeRec*, const SkRect*) const SK_OVERRIDE;
protected:
/** New virtual, to be overridden by subclasses.
This is called once from filterPath, and provides the
uv parameter bounds for the path. Subsequent calls to
next() will receive u and v values within these bounds,
and then a call to end() will signal the end of processing.
*/
virtual void begin(const SkIRect& uvBounds, SkPath* dst) const;
virtual void next(const SkPoint& loc, int u, int v, SkPath* dst) const;
virtual void end(SkPath* dst) const;
/** Low-level virtual called per span of locations in the u-direction.
The default implementation calls next() repeatedly with each
location.
*/
virtual void nextSpan(int u, int v, int ucount, SkPath* dst) const;
const SkMatrix& getMatrix() const { return fMatrix; }
// protected so that subclasses can call this during unflattening
explicit Sk2DPathEffect(const SkMatrix& mat);
virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;
private:
SkMatrix fMatrix, fInverse;
bool fMatrixIsInvertible;
// illegal
Sk2DPathEffect(const Sk2DPathEffect&);
Sk2DPathEffect& operator=(const Sk2DPathEffect&);
friend class Sk2DPathEffectBlitter;
typedef SkPathEffect INHERITED;
};
class SK_API SkLine2DPathEffect : public Sk2DPathEffect {
public:
static SkLine2DPathEffect* Create(SkScalar width, const SkMatrix& matrix) {
return SkNEW_ARGS(SkLine2DPathEffect, (width, matrix));
}
virtual bool filterPath(SkPath* dst, const SkPath& src,
SkStrokeRec*, const SkRect*) const SK_OVERRIDE;
SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkLine2DPathEffect)
protected:
SkLine2DPathEffect(SkScalar width, const SkMatrix& matrix)
: Sk2DPathEffect(matrix), fWidth(width) {}
virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;
virtual void nextSpan(int u, int v, int ucount, SkPath*) const SK_OVERRIDE;
private:
SkScalar fWidth;
typedef Sk2DPathEffect INHERITED;
};
class SK_API SkPath2DPathEffect : public Sk2DPathEffect {
public:
/**
* Stamp the specified path to fill the shape, using the matrix to define
* the latice.
*/
static SkPath2DPathEffect* Create(const SkMatrix& matrix, const SkPath& path) {
return SkNEW_ARGS(SkPath2DPathEffect, (matrix, path));
}
SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkPath2DPathEffect)
protected:
SkPath2DPathEffect(const SkMatrix&, const SkPath&);
virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;
virtual void next(const SkPoint&, int u, int v, SkPath*) const SK_OVERRIDE;
private:
SkPath fPath;
typedef Sk2DPathEffect INHERITED;
};
#endif