0f10f7bf1f
This change is motivated by the desire to see the text information in the debugger when not in developer mode. It is structured so user's can disable it if the capability is not wanted. R=bsalomon@google.com Author: robertphillips@google.com Review URL: https://codereview.chromium.org/197763008 git-svn-id: http://skia.googlecode.com/svn/trunk@13795 2bbb7eff-a529-9590-31e7-b0007b416f81
87 lines
2.4 KiB
C++
87 lines
2.4 KiB
C++
/*
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* Copyright 2008 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 SkBlurDrawLooper_DEFINED
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#define SkBlurDrawLooper_DEFINED
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#include "SkDrawLooper.h"
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#include "SkColor.h"
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class SkMaskFilter;
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class SkColorFilter;
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/** \class SkBlurDrawLooper
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This class draws a shadow of the object (possibly offset), and then draws
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the original object in its original position.
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should there be an option to just draw the shadow/blur layer? webkit?
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*/
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class SK_API SkBlurDrawLooper : public SkDrawLooper {
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public:
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enum BlurFlags {
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kNone_BlurFlag = 0x00,
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/**
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The blur layer's dx/dy/radius aren't affected by the canvas
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transform.
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*/
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kIgnoreTransform_BlurFlag = 0x01,
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kOverrideColor_BlurFlag = 0x02,
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kHighQuality_BlurFlag = 0x04,
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/** mask for all blur flags */
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kAll_BlurFlag = 0x07
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};
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SkBlurDrawLooper(SkColor color, SkScalar sigma, SkScalar dx, SkScalar dy,
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uint32_t flags = kNone_BlurFlag);
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// SK_ATTR_DEPRECATED("use sigma version")
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SkBlurDrawLooper(SkScalar radius, SkScalar dx, SkScalar dy, SkColor color,
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uint32_t flags = kNone_BlurFlag);
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virtual ~SkBlurDrawLooper();
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virtual SkDrawLooper::Context* createContext(SkCanvas*, void* storage) const SK_OVERRIDE;
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virtual size_t contextSize() const SK_OVERRIDE { return sizeof(BlurDrawLooperContext); }
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SK_TO_STRING_OVERRIDE()
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SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkBlurDrawLooper)
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protected:
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SkBlurDrawLooper(SkReadBuffer&);
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virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;
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private:
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SkMaskFilter* fBlur;
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SkColorFilter* fColorFilter;
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SkScalar fDx, fDy;
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SkColor fBlurColor;
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uint32_t fBlurFlags;
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enum State {
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kBeforeEdge,
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kAfterEdge,
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kDone
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};
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class BlurDrawLooperContext : public SkDrawLooper::Context {
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public:
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explicit BlurDrawLooperContext(const SkBlurDrawLooper* looper);
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virtual bool next(SkCanvas* canvas, SkPaint* paint) SK_OVERRIDE;
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private:
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const SkBlurDrawLooper* fLooper;
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State fState;
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};
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void init(SkScalar sigma, SkScalar dx, SkScalar dy, SkColor color, uint32_t flags);
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typedef SkDrawLooper INHERITED;
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};
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#endif
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