1 // Copyright 2014 The PDFium Authors
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
6
7 #include "fxbarcode/BC_TwoDimWriter.h"
8
9 #include <algorithm>
10
11 #include "core/fxcrt/check.h"
12 #include "core/fxcrt/fx_safe_types.h"
13 #include "core/fxge/cfx_fillrenderoptions.h"
14 #include "core/fxge/cfx_graphstatedata.h"
15 #include "core/fxge/cfx_path.h"
16 #include "core/fxge/cfx_renderdevice.h"
17 #include "fxbarcode/BC_Writer.h"
18 #include "fxbarcode/common/BC_CommonBitMatrix.h"
19
CBC_TwoDimWriter(bool bFixedSize)20 CBC_TwoDimWriter::CBC_TwoDimWriter(bool bFixedSize)
21 : m_bFixedSize(bFixedSize) {}
22
23 CBC_TwoDimWriter::~CBC_TwoDimWriter() = default;
24
RenderResult(pdfium::span<const uint8_t> code,int32_t codeWidth,int32_t codeHeight)25 bool CBC_TwoDimWriter::RenderResult(pdfium::span<const uint8_t> code,
26 int32_t codeWidth,
27 int32_t codeHeight) {
28 if (code.empty())
29 return false;
30
31 m_inputWidth = codeWidth;
32 m_inputHeight = codeHeight;
33 int32_t tempWidth = m_inputWidth + 2;
34 int32_t tempHeight = m_inputHeight + 2;
35 const float module_size =
36 std::clamp<float>(std::min(m_ModuleWidth, m_ModuleHeight), 1.0f, 8.0f);
37 FX_SAFE_INT32 scaledWidth = tempWidth;
38 FX_SAFE_INT32 scaledHeight = tempHeight;
39 scaledWidth *= module_size;
40 scaledHeight *= module_size;
41 m_outputWidth = scaledWidth.ValueOrDie();
42 m_outputHeight = scaledHeight.ValueOrDie();
43
44 if (m_bFixedSize) {
45 if (m_Width < m_outputWidth || m_Height < m_outputHeight) {
46 return false;
47 }
48 } else {
49 if (m_Width > m_outputWidth || m_Height > m_outputHeight) {
50 int32_t width_factor = static_cast<int32_t>(
51 floor(static_cast<float>(m_Width) / m_outputWidth));
52 int32_t height_factor = static_cast<int32_t>(
53 floor(static_cast<float>(m_Height) / m_outputHeight));
54 width_factor = std::max(width_factor, 1);
55 height_factor = std::max(height_factor, 1);
56
57 m_outputWidth *= width_factor;
58 m_outputHeight *= height_factor;
59 }
60 }
61 m_multiX =
62 static_cast<int32_t>(ceil(static_cast<float>(m_outputWidth) / tempWidth));
63 m_multiY = static_cast<int32_t>(
64 ceil(static_cast<float>(m_outputHeight) / tempHeight));
65 if (m_bFixedSize) {
66 m_multiX = std::min(m_multiX, m_multiY);
67 m_multiY = m_multiX;
68 }
69
70 m_leftPadding = std::max((m_Width - m_outputWidth) / 2, 0);
71 m_topPadding = std::max((m_Height - m_outputHeight) / 2, 0);
72
73 m_output = std::make_unique<CBC_CommonBitMatrix>(m_inputWidth, m_inputHeight);
74 for (int32_t y = 0; y < m_inputHeight; ++y) {
75 for (int32_t x = 0; x < m_inputWidth; ++x) {
76 if (code[x + y * m_inputWidth] == 1)
77 m_output->Set(x, y);
78 }
79 }
80 return true;
81 }
82
RenderDeviceResult(CFX_RenderDevice * device,const CFX_Matrix & matrix)83 void CBC_TwoDimWriter::RenderDeviceResult(CFX_RenderDevice* device,
84 const CFX_Matrix& matrix) {
85 DCHECK(m_output);
86
87 CFX_GraphStateData stateData;
88 CFX_Path path;
89 path.AppendRect(0, 0, m_Width, m_Height);
90 device->DrawPath(path, &matrix, &stateData, kBackgroundColor,
91 kBackgroundColor, CFX_FillRenderOptions::EvenOddOptions());
92 int32_t leftPos = m_leftPadding;
93 int32_t topPos = m_topPadding;
94
95 CFX_Matrix matri = matrix;
96 if (m_Width < m_outputWidth && m_Height < m_outputHeight) {
97 CFX_Matrix matriScale(static_cast<float>(m_Width) / m_outputWidth, 0.0, 0.0,
98 static_cast<float>(m_Height) / m_outputHeight, 0.0,
99 0.0);
100 matriScale.Concat(matrix);
101 matri = matriScale;
102 }
103
104 CFX_GraphStateData data;
105 for (int32_t x = 0; x < m_inputWidth; x++) {
106 for (int32_t y = 0; y < m_inputHeight; y++) {
107 if (m_output->Get(x, y)) {
108 // In the output, each module is shifted by 1 due to the one module
109 // padding added to create quiet areas.
110 int start_x_output = x + 1;
111 int end_x_output = x + 2;
112 int start_y_output = y + 1;
113 int end_y_output = y + 2;
114
115 CFX_Path rect;
116 rect.AppendRect(leftPos + start_x_output * m_multiX,
117 topPos + start_y_output * m_multiY,
118 leftPos + end_x_output * m_multiX,
119 topPos + end_y_output * m_multiY);
120 device->DrawPath(rect, &matri, &data, kBarColor, 0,
121 CFX_FillRenderOptions::WindingOptions());
122 }
123 }
124 }
125 }
126