/*
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* Copyright 2012 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SkColorTable_DEFINED
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#define SkColorTable_DEFINED
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#include "SkColor.h"
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#include "SkRefCnt.h"
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/** \class SkColorTable
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SkColorTable holds an array SkPMColors (premultiplied 32-bit colors) used by
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8-bit bitmaps, where the bitmap bytes are interpreted as indices into the colortable.
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SkColorTable is thread-safe.
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*/
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class SkColorTable : public SkRefCnt {
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public:
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/** Copy up to 256 colors into a new SkColorTable.
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*/
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SkColorTable(const SkPMColor colors[], int count);
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~SkColorTable() override;
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/** Returns the number of colors in the table.
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*/
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int count() const { return fCount; }
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/** Returns the specified color from the table. In the debug build, this asserts that
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* the index is in range (0 <= index < count).
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*/
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SkPMColor operator[](int index) const {
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SkASSERT(fColors != nullptr && (unsigned)index < (unsigned)fCount);
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return fColors[index];
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}
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/** Return the array of colors for reading. */
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const SkPMColor* readColors() const { return fColors; }
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private:
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SkPMColor* fColors;
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int fCount;
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typedef SkRefCnt INHERITED;
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};
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#endif
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