The Tor Browser: gfx/skia/trunk/include/utils/SkUnitMappers.h@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     2 /*

     3  * Copyright 2008 The Android Open Source Project

     4  *

     5  * Use of this source code is governed by a BSD-style license that can be

     6  * found in the LICENSE file.

     7  */

    10 #ifndef SkUnitMappers_DEFINED

    11 #define SkUnitMappers_DEFINED

    13 #include "SkUnitMapper.h"

    15 /** This discretizes the range [0...1) into N discret values.

    16 */

    17 class SkDiscreteMapper : public SkUnitMapper {

    18 public:

    19     SkDiscreteMapper(int segments);

    20     // override from SkUnitMapper

    21     virtual uint16_t mapUnit16(uint16_t x);

    23     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkDiscreteMapper)

    25 protected:

    26     SkDiscreteMapper(SkReadBuffer& );

    27     virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;

    29 private:

    30     int     fSegments;

    31     int32_t fScale;    // computed from fSegments

    33     typedef SkUnitMapper INHERITED;

    34 };

    36 /** This returns cos(x), to simulate lighting a sphere, where 0 maps to the

    37     center of the sphere, and 1 maps to the edge.

    38 */

    39 class SkCosineMapper : public SkUnitMapper {

    40 public:

    41     SkCosineMapper() {}

    42     // override from SkUnitMapper

    43     virtual uint16_t mapUnit16(uint16_t x);

    45     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkCosineMapper)

    47 protected:

    48     SkCosineMapper(SkReadBuffer&);

    50 private:

    52     typedef SkUnitMapper INHERITED;

    53 };

    55 #endif

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