1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/skia/trunk/include/effects/SkLayerRasterizer.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,92 @@
1.4 +
1.5 +/*
1.6 + * Copyright 2006 The Android Open Source Project
1.7 + *
1.8 + * Use of this source code is governed by a BSD-style license that can be
1.9 + * found in the LICENSE file.
1.10 + */
1.11 +
1.12 +
1.13 +#ifndef SkLayerRasterizer_DEFINED
1.14 +#define SkLayerRasterizer_DEFINED
1.15 +
1.16 +#include "SkRasterizer.h"
1.17 +#include "SkDeque.h"
1.18 +#include "SkScalar.h"
1.19 +
1.20 +class SkPaint;
1.21 +
1.22 +class SK_API SkLayerRasterizer : public SkRasterizer {
1.23 +public:
1.24 + virtual ~SkLayerRasterizer();
1.25 +
1.26 + class SK_API Builder {
1.27 + public:
1.28 + Builder();
1.29 + ~Builder();
1.30 +
1.31 + void addLayer(const SkPaint& paint) {
1.32 + this->addLayer(paint, 0, 0);
1.33 + }
1.34 +
1.35 + /**
1.36 + * Add a new layer (above any previous layers) to the rasterizer.
1.37 + * The layer will extract those fields that affect the mask from
1.38 + * the specified paint, but will not retain a reference to the paint
1.39 + * object itself, so it may be reused without danger of side-effects.
1.40 + */
1.41 + void addLayer(const SkPaint& paint, SkScalar dx, SkScalar dy);
1.42 +
1.43 + /**
1.44 + * Pass queue of layers on to newly created layer rasterizer and return it. The builder
1.45 + * cannot be used any more after calling this function.
1.46 + */
1.47 + SkLayerRasterizer* detachRasterizer();
1.48 +
1.49 + private:
1.50 + SkDeque* fLayers;
1.51 + };
1.52 +
1.53 +#ifdef SK_SUPPORT_LEGACY_LAYERRASTERIZER_API
1.54 + void addLayer(const SkPaint& paint) {
1.55 + this->addLayer(paint, 0, 0);
1.56 + }
1.57 +
1.58 + /** Add a new layer (above any previous layers) to the rasterizer.
1.59 + The layer will extract those fields that affect the mask from
1.60 + the specified paint, but will not retain a reference to the paint
1.61 + object itself, so it may be reused without danger of side-effects.
1.62 + */
1.63 + void addLayer(const SkPaint& paint, SkScalar dx, SkScalar dy);
1.64 +#endif
1.65 +
1.66 + SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkLayerRasterizer)
1.67 +
1.68 +protected:
1.69 + SkLayerRasterizer(SkDeque* layers);
1.70 + SkLayerRasterizer(SkReadBuffer&);
1.71 + virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;
1.72 +
1.73 + // override from SkRasterizer
1.74 + virtual bool onRasterize(const SkPath& path, const SkMatrix& matrix,
1.75 + const SkIRect* clipBounds,
1.76 + SkMask* mask, SkMask::CreateMode mode) const;
1.77 +
1.78 +#ifdef SK_SUPPORT_LEGACY_LAYERRASTERIZER_API
1.79 +public:
1.80 +#endif
1.81 + SkLayerRasterizer();
1.82 +
1.83 +private:
1.84 +#ifdef SK_SUPPORT_LEGACY_LAYERRASTERIZER_API
1.85 + SkDeque* fLayers;
1.86 +#else
1.87 + const SkDeque* const fLayers;
1.88 +#endif
1.89 +
1.90 + static SkDeque* ReadLayers(SkReadBuffer& buffer);
1.91 +
1.92 + typedef SkRasterizer INHERITED;
1.93 +};
1.94 +
1.95 +#endif
