68 lines
2.0 KiB
C++
68 lines
2.0 KiB
C++
/*
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* Copyright 2007 The Android Open Source Project
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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 SkColorMatrix_DEFINED
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#define SkColorMatrix_DEFINED
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#include "SkScalar.h"
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class SK_API SkColorMatrix {
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public:
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SkScalar fMat[20];
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enum Elem {
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kR_Scale = 0,
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kG_Scale = 6,
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kB_Scale = 12,
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kA_Scale = 18,
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kR_Trans = 4,
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kG_Trans = 9,
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kB_Trans = 14,
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kA_Trans = 19,
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};
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void setIdentity();
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void setScale(SkScalar rScale, SkScalar gScale, SkScalar bScale,
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SkScalar aScale = SK_Scalar1);
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void preScale(SkScalar rScale, SkScalar gScale, SkScalar bScale,
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SkScalar aScale = SK_Scalar1);
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void postScale(SkScalar rScale, SkScalar gScale, SkScalar bScale,
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SkScalar aScale = SK_Scalar1);
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void postTranslate(SkScalar rTrans, SkScalar gTrans, SkScalar bTrans,
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SkScalar aTrans = 0);
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enum Axis {
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kR_Axis = 0,
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kG_Axis = 1,
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kB_Axis = 2
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};
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void setRotate(Axis, SkScalar degrees);
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void setSinCos(Axis, SkScalar sine, SkScalar cosine);
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void preRotate(Axis, SkScalar degrees);
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void postRotate(Axis, SkScalar degrees);
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void setConcat(const SkColorMatrix& a, const SkColorMatrix& b);
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void preConcat(const SkColorMatrix& mat) { this->setConcat(*this, mat); }
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void postConcat(const SkColorMatrix& mat) { this->setConcat(mat, *this); }
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void setSaturation(SkScalar sat);
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void setRGB2YUV();
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void setYUV2RGB();
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bool operator==(const SkColorMatrix& other) const {
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return 0 == memcmp(fMat, other.fMat, sizeof(fMat));
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}
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bool operator!=(const SkColorMatrix& other) const { return !((*this) == other); }
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static bool NeedsClamping(const SkScalar[20]);
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static void SetConcat(SkScalar result[20], const SkScalar outer[20], const SkScalar inner[20]);
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};
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#endif
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