aboutsummaryrefslogtreecommitdiffhomepage
path: root/include/effects/SkTransparentShader.h
blob: bee9a02d2d9f0af99b71fb2b2ab56ebbf66265e4 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
/*
 * Copyright 2006 The Android Open Source Project
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

#ifndef SkTransparentShader_DEFINED
#define SkTransparentShader_DEFINED

#include "SkShader.h"

class SK_API SkTransparentShader : public SkShader {
public:
    SkTransparentShader() {}

    virtual uint32_t getFlags() SK_OVERRIDE;
    virtual bool    setContext(const SkBitmap& device,
                               const SkPaint& paint,
                               const SkMatrix& matrix) SK_OVERRIDE;
    virtual void    shadeSpan(int x, int y, SkPMColor[], int count) SK_OVERRIDE;
    virtual void    shadeSpan16(int x, int y, uint16_t span[], int count) SK_OVERRIDE;

    SK_DEVELOPER_TO_STRING()
    SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkTransparentShader)

private:
    // these are a cache from the call to setContext()
    const SkBitmap* fDevice;
    uint8_t         fAlpha;

    SkTransparentShader(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) {}

    typedef SkShader INHERITED;
};

#endif