/usr/include/thunderbird/skia/SkLayerRasterizer.h is in thunderbird-dev 1:38.6.0+build1-0ubuntu1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 | /*
* 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 SkLayerRasterizer_DEFINED
#define SkLayerRasterizer_DEFINED
#include "SkRasterizer.h"
#include "SkDeque.h"
#include "SkScalar.h"
class SkPaint;
class SK_API SkLayerRasterizer : public SkRasterizer {
public:
virtual ~SkLayerRasterizer();
class SK_API Builder {
public:
Builder();
~Builder();
void addLayer(const SkPaint& paint) {
this->addLayer(paint, 0, 0);
}
/**
* Add a new layer (above any previous layers) to the rasterizer.
* The layer will extract those fields that affect the mask from
* the specified paint, but will not retain a reference to the paint
* object itself, so it may be reused without danger of side-effects.
*/
void addLayer(const SkPaint& paint, SkScalar dx, SkScalar dy);
/**
* Pass queue of layers on to newly created layer rasterizer and return it. The builder
* *cannot* be used any more after calling this function. If no layers have been added,
* returns NULL.
*
* The caller is responsible for calling unref() on the returned object, if non NULL.
*/
SkLayerRasterizer* detachRasterizer();
/**
* Create and return a new immutable SkLayerRasterizer that contains a shapshot of the
* layers that were added to the Builder, without modifying the Builder. The Builder
* *may* be used after calling this function. It will continue to hold any layers
* previously added, so consecutive calls to this function will return identical objects,
* and objects returned by future calls to this function contain all the layers in
* previously returned objects. If no layers have been added, returns NULL.
*
* Future calls to addLayer will not affect rasterizers previously returned by this call.
*
* The caller is responsible for calling unref() on the returned object, if non NULL.
*/
SkLayerRasterizer* snapshotRasterizer() const;
private:
SkDeque* fLayers;
};
SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkLayerRasterizer)
protected:
SkLayerRasterizer();
SkLayerRasterizer(SkDeque* layers);
SkLayerRasterizer(SkReadBuffer&);
virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;
// override from SkRasterizer
virtual bool onRasterize(const SkPath& path, const SkMatrix& matrix,
const SkIRect* clipBounds,
SkMask* mask, SkMask::CreateMode mode) const SK_OVERRIDE;
private:
const SkDeque* const fLayers;
static SkDeque* ReadLayers(SkReadBuffer& buffer);
friend class LayerRasterizerTester;
typedef SkRasterizer INHERITED;
};
#endif
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