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/*
* Copyright 2015 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkTableColorFilter_DEFINED
#define SkTableColorFilter_DEFINED
#include "SkColorFilter.h"
class SK_API SkTableColorFilter {
public:
/**
* Create a table colorfilter, copying the table into the filter, and
* applying it to all 4 components.
* a' = table[a];
* r' = table[r];
* g' = table[g];
* b' = table[b];
* Compoents are operated on in unpremultiplied space. If the incomming
* colors are premultiplied, they are temporarily unpremultiplied, then
* the table is applied, and then the result is remultiplied.
*/
static sk_sp<SkColorFilter> Make(const uint8_t table[256]);
/**
* Create a table colorfilter, with a different table for each
* component [A, R, G, B]. If a given table is NULL, then it is
* treated as identity, with the component left unchanged. If a table
* is not null, then its contents are copied into the filter.
*/
static sk_sp<SkColorFilter> MakeARGB(const uint8_t tableA[256],
const uint8_t tableR[256],
const uint8_t tableG[256],
const uint8_t tableB[256]);
static void InitializeFlattenables();
};
#endif
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