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 // Original code is licensed as follows:
7 /*
8 * Copyright 2009 ZXing authors
9 *
10 * Licensed under the Apache License, Version 2.0 (the "License");
11 * you may not use this file except in compliance with the License.
12 * You may obtain a copy of the License at
13 *
14 * http://www.apache.org/licenses/LICENSE-2.0
15 *
16 * Unless required by applicable law or agreed to in writing, software
17 * distributed under the License is distributed on an "AS IS" BASIS,
18 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
19 * See the License for the specific language governing permissions and
20 * limitations under the License.
21 */
22
23 #include "fxbarcode/oned/BC_OnedEAN8Writer.h"
24
25 #include <math.h>
26
27 #include <algorithm>
28 #include <array>
29 #include <memory>
30 #include <vector>
31
32 #include "core/fxcrt/fx_extension.h"
33 #include "core/fxge/cfx_defaultrenderdevice.h"
34 #include "core/fxge/text_char_pos.h"
35 #include "fxbarcode/BC_Writer.h"
36 #include "fxbarcode/oned/BC_OneDimWriter.h"
37 #include "fxbarcode/oned/BC_OnedEANChecksum.h"
38
39 namespace {
40
41 const uint8_t kOnedEAN8StartPattern[3] = {1, 1, 1};
42 const uint8_t kOnedEAN8MiddlePattern[5] = {1, 1, 1, 1, 1};
43
44 using LPatternRow = std::array<uint8_t, 4>;
45 constexpr std::array<const LPatternRow, 10> kOnedEAN8LPatternTable = {
46 {{3, 2, 1, 1},
47 {2, 2, 2, 1},
48 {2, 1, 2, 2},
49 {1, 4, 1, 1},
50 {1, 1, 3, 2},
51 {1, 2, 3, 1},
52 {1, 1, 1, 4},
53 {1, 3, 1, 2},
54 {1, 2, 1, 3},
55 {3, 1, 1, 2}}};
56
57 } // namespace
58
CBC_OnedEAN8Writer()59 CBC_OnedEAN8Writer::CBC_OnedEAN8Writer() {
60 m_iDataLenth = 8;
61 }
62
63 CBC_OnedEAN8Writer::~CBC_OnedEAN8Writer() = default;
64
SetDataLength(int32_t length)65 void CBC_OnedEAN8Writer::SetDataLength(int32_t length) {
66 m_iDataLenth = 8;
67 }
68
SetTextLocation(BC_TEXT_LOC location)69 void CBC_OnedEAN8Writer::SetTextLocation(BC_TEXT_LOC location) {
70 if (location == BC_TEXT_LOC::kBelowEmbed)
71 m_locTextLoc = location;
72 }
73
CheckContentValidity(WideStringView contents)74 bool CBC_OnedEAN8Writer::CheckContentValidity(WideStringView contents) {
75 return HasValidContentSize(contents) &&
76 std::all_of(contents.begin(), contents.end(),
77 [](wchar_t c) { return FXSYS_IsDecimalDigit(c); });
78 }
79
FilterContents(WideStringView contents)80 WideString CBC_OnedEAN8Writer::FilterContents(WideStringView contents) {
81 WideString filtercontents;
82 filtercontents.Reserve(contents.GetLength());
83 wchar_t ch;
84 for (size_t i = 0; i < contents.GetLength(); i++) {
85 ch = contents[i];
86 if (ch > 175) {
87 i++;
88 continue;
89 }
90 if (FXSYS_IsDecimalDigit(ch))
91 filtercontents += ch;
92 }
93 return filtercontents;
94 }
95
CalcChecksum(const ByteString & contents)96 int32_t CBC_OnedEAN8Writer::CalcChecksum(const ByteString& contents) {
97 return EANCalcChecksum(contents);
98 }
99
Encode(const ByteString & contents)100 DataVector<uint8_t> CBC_OnedEAN8Writer::Encode(const ByteString& contents) {
101 if (contents.GetLength() != 8)
102 return {};
103
104 DataVector<uint8_t> result(m_codeWidth);
105 auto result_span = pdfium::make_span(result);
106 result_span = AppendPattern(result_span, kOnedEAN8StartPattern, true);
107
108 for (int i = 0; i <= 3; i++) {
109 int32_t digit = FXSYS_DecimalCharToInt(contents[i]);
110 result_span =
111 AppendPattern(result_span, kOnedEAN8LPatternTable[digit], false);
112 }
113 result_span = AppendPattern(result_span, kOnedEAN8MiddlePattern, false);
114
115 for (int i = 4; i <= 7; i++) {
116 int32_t digit = FXSYS_DecimalCharToInt(contents[i]);
117 result_span =
118 AppendPattern(result_span, kOnedEAN8LPatternTable[digit], true);
119 }
120 AppendPattern(result_span, kOnedEAN8StartPattern, true);
121 return result;
122 }
123
ShowChars(WideStringView contents,CFX_RenderDevice * device,const CFX_Matrix & matrix,int32_t barWidth)124 bool CBC_OnedEAN8Writer::ShowChars(WideStringView contents,
125 CFX_RenderDevice* device,
126 const CFX_Matrix& matrix,
127 int32_t barWidth) {
128 if (!device)
129 return false;
130
131 constexpr float kLeftPosition = 3.0f;
132 ByteString str = FX_UTF8Encode(contents);
133 size_t iLength = str.GetLength();
134 std::vector<TextCharPos> charpos(iLength);
135 ByteString tempStr = str.First(4);
136 size_t iLen = tempStr.GetLength();
137 constexpr int32_t kWidth = 28;
138 float blank = 0.0f;
139
140 int32_t iFontSize = static_cast<int32_t>(fabs(m_fFontSize));
141 int32_t iTextHeight = iFontSize + 1;
142
143 CFX_Matrix matr(m_outputHScale, 0.0, 0.0, 1.0, 0.0, 0.0);
144 CFX_FloatRect rect(kLeftPosition, (float)(m_Height - iTextHeight),
145 kLeftPosition + kWidth - 0.5, (float)m_Height);
146 matr.Concat(matrix);
147 FX_RECT re = matr.TransformRect(rect).GetOuterRect();
148 device->FillRect(re, kBackgroundColor);
149 CFX_Matrix matr1(m_outputHScale, 0.0, 0.0, 1.0, 0.0, 0.0);
150 CFX_FloatRect rect1(kLeftPosition + 33, (float)(m_Height - iTextHeight),
151 kLeftPosition + 33 + kWidth - 0.5, (float)m_Height);
152 matr1.Concat(matrix);
153 re = matr1.TransformRect(rect1).GetOuterRect();
154 device->FillRect(re, kBackgroundColor);
155 int32_t strWidth = static_cast<int32_t>(kWidth * m_outputHScale);
156
157 pdfium::span<TextCharPos> charpos_span = pdfium::make_span(charpos);
158 CalcTextInfo(tempStr, charpos, m_pFont, (float)strWidth, iFontSize, blank);
159 {
160 CFX_Matrix affine_matrix1(1.0, 0.0, 0.0, -1.0,
161 kLeftPosition * m_outputHScale,
162 (float)(m_Height - iTextHeight + iFontSize));
163 affine_matrix1.Concat(matrix);
164 device->DrawNormalText(charpos_span.first(iLen), m_pFont,
165 static_cast<float>(iFontSize), affine_matrix1,
166 m_fontColor, GetTextRenderOptions());
167 }
168 tempStr = str.Substr(4, 4);
169 iLen = tempStr.GetLength();
170 CalcTextInfo(tempStr, charpos_span.subspan(4), m_pFont, (float)strWidth,
171 iFontSize, blank);
172 {
173 CFX_Matrix affine_matrix1(1.0, 0.0, 0.0, -1.0,
174 (kLeftPosition + 33) * m_outputHScale,
175 (float)(m_Height - iTextHeight + iFontSize));
176 affine_matrix1.Concat(matrix);
177 device->DrawNormalText(charpos_span.subspan(4, iLen), m_pFont,
178 static_cast<float>(iFontSize), affine_matrix1,
179 m_fontColor, GetTextRenderOptions());
180 }
181 return true;
182 }
183