зеркало из https://github.com/mozilla/moz-skia.git
65 строки
2.1 KiB
C++
65 строки
2.1 KiB
C++
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/*
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* Copyright 2006 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 SkBlurMaskFilter_DEFINED
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#define SkBlurMaskFilter_DEFINED
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// we include this since our callers will need to at least be able to ref/unref
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#include "SkMaskFilter.h"
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#include "SkScalar.h"
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class SK_API SkBlurMaskFilter {
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public:
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enum BlurStyle {
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kNormal_BlurStyle, //!< fuzzy inside and outside
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kSolid_BlurStyle, //!< solid inside, fuzzy outside
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kOuter_BlurStyle, //!< nothing inside, fuzzy outside
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kInner_BlurStyle, //!< fuzzy inside, nothing outside
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kBlurStyleCount
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};
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enum BlurFlags {
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kNone_BlurFlag = 0x00,
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/** The blur layer's radius is not affected by transforms */
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kIgnoreTransform_BlurFlag = 0x01,
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/** Use a smother, higher qulity blur algorithm */
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kHighQuality_BlurFlag = 0x02,
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/** mask for all blur flags */
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kAll_BlurFlag = 0x03
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};
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/** Create a blur maskfilter.
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@param radius The radius to extend the blur from the original mask. Must be > 0.
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@param style The BlurStyle to use
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@param flags Flags to use - defaults to none
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@return The new blur maskfilter
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*/
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static SkMaskFilter* Create(SkScalar radius, BlurStyle style,
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uint32_t flags = kNone_BlurFlag);
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/** Create an emboss maskfilter
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@param direction array of 3 scalars [x, y, z] specifying the direction of the light source
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@param ambient 0...1 amount of ambient light
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@param specular coefficient for specular highlights (e.g. 8)
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@param blurRadius amount to blur before applying lighting (e.g. 3)
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@return the emboss maskfilter
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*/
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static SkMaskFilter* CreateEmboss( const SkScalar direction[3],
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SkScalar ambient, SkScalar specular,
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SkScalar blurRadius);
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SK_DECLARE_FLATTENABLE_REGISTRAR_GROUP()
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private:
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SkBlurMaskFilter(); // can't be instantiated
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};
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#endif
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