SkBitmapProcShader.h revision 8b0e8ac5f582de80356019406e2975079bf0829d 
1
2/*
3 * Copyright 2006 The Android Open Source Project
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
8
9
10#ifndef SkBitmapProcShader_DEFINED
11#define SkBitmapProcShader_DEFINED
12
13#include "SkShader.h"
14#include "SkBitmapProcState.h"
15
16class SkBitmapProcShader : public SkShader {
17public:
18    SkBitmapProcShader(const SkBitmap& src, TileMode tx, TileMode ty);
19
20    // overrides from SkShader
21    virtual bool isOpaque() const SK_OVERRIDE;
22    virtual bool setContext(const SkBitmap&, const SkPaint&, const SkMatrix&) SK_OVERRIDE;
23    virtual void endContext() SK_OVERRIDE;
24    virtual uint32_t getFlags() SK_OVERRIDE { return fFlags; }
25    virtual void shadeSpan(int x, int y, SkPMColor dstC[], int count) SK_OVERRIDE;
26    virtual ShadeProc asAShadeProc(void** ctx) SK_OVERRIDE;
27    virtual void shadeSpan16(int x, int y, uint16_t dstC[], int count) SK_OVERRIDE;
28    virtual BitmapType asABitmap(SkBitmap*, SkMatrix*, TileMode*) const SK_OVERRIDE;
29
30    static bool CanDo(const SkBitmap&, TileMode tx, TileMode ty);
31
32    SK_DEVELOPER_TO_STRING()
33    SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkBitmapProcShader)
34
35#if SK_SUPPORT_GPU
36    GrEffectRef* asNewEffect(GrContext*, const SkPaint&) const SK_OVERRIDE;
37#endif
38
39protected:
40    SkBitmapProcShader(SkReadBuffer& );
41    virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;
42
43    SkBitmap          fRawBitmap;   // experimental for RLE encoding
44    SkBitmapProcState fState;
45    uint32_t          fFlags;
46
47private:
48    typedef SkShader INHERITED;
49};
50
51#endif
52