summaryrefslogtreecommitdiff
path: root/core/fxge/dib/cfx_scanlinecompositor.h
blob: bc20cc97abd4e8613ed8cec13cabec27b6e2ec77 (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
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
// Copyright 2017 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com

#ifndef CORE_FXGE_DIB_CFX_SCANLINECOMPOSITOR_H_
#define CORE_FXGE_DIB_CFX_SCANLINECOMPOSITOR_H_

#include <memory>

#include "core/fxge/dib/cfx_dibsource.h"

class CFX_ScanlineCompositor {
 public:
  CFX_ScanlineCompositor();

  ~CFX_ScanlineCompositor();

  bool Init(FXDIB_Format dest_format,
            FXDIB_Format src_format,
            int32_t width,
            uint32_t* pSrcPalette,
            uint32_t mask_color,
            int blend_type,
            bool bClip,
            bool bRgbByteOrder,
            int alpha_flag);

  void CompositeRgbBitmapLine(uint8_t* dest_scan,
                              const uint8_t* src_scan,
                              int width,
                              const uint8_t* clip_scan,
                              const uint8_t* src_extra_alpha,
                              uint8_t* dst_extra_alpha);

  void CompositePalBitmapLine(uint8_t* dest_scan,
                              const uint8_t* src_scan,
                              int src_left,
                              int width,
                              const uint8_t* clip_scan,
                              const uint8_t* src_extra_alpha,
                              uint8_t* dst_extra_alpha);

  void CompositeByteMaskLine(uint8_t* dest_scan,
                             const uint8_t* src_scan,
                             int width,
                             const uint8_t* clip_scan,
                             uint8_t* dst_extra_alpha);

  void CompositeBitMaskLine(uint8_t* dest_scan,
                            const uint8_t* src_scan,
                            int src_left,
                            int width,
                            const uint8_t* clip_scan,
                            uint8_t* dst_extra_alpha);

 private:
  void InitSourcePalette(FXDIB_Format src_format,
                         FXDIB_Format dest_format,
                         const uint32_t* pSrcPalette);

  void InitSourceMask(int alpha_flag, uint32_t mask_color);

  int m_Transparency;
  FXDIB_Format m_SrcFormat;
  FXDIB_Format m_DestFormat;
  std::unique_ptr<uint32_t, FxFreeDeleter> m_pSrcPalette;
  int m_MaskAlpha;
  int m_MaskRed;
  int m_MaskGreen;
  int m_MaskBlue;
  int m_BlendType;
  bool m_bRgbByteOrder;
};

#endif  // CORE_FXGE_DIB_CFX_SCANLINECOMPOSITOR_H_