1 // Copyright 2014 PDFium Authors. All rights reserved.
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 <algorithm>
8
9 #include "core/fxge/cfx_graphstatedata.h"
10 #include "core/fxge/cfx_pathdata.h"
11 #include "core/fxge/cfx_renderdevice.h"
12 #include "fxbarcode/BC_TwoDimWriter.h"
13 #include "fxbarcode/BC_Writer.h"
14 #include "fxbarcode/common/BC_CommonBitMatrix.h"
15 #include "third_party/base/numerics/safe_math.h"
16 #include "third_party/base/ptr_util.h"
17
CBC_TwoDimWriter()18 CBC_TwoDimWriter::CBC_TwoDimWriter() : m_iCorrectLevel(1), m_bFixedSize(true) {}
19
~CBC_TwoDimWriter()20 CBC_TwoDimWriter::~CBC_TwoDimWriter() {}
21
RenderDeviceResult(CFX_RenderDevice * device,const CFX_Matrix * matrix)22 void CBC_TwoDimWriter::RenderDeviceResult(CFX_RenderDevice* device,
23 const CFX_Matrix* matrix) {
24 CFX_GraphStateData stateData;
25 CFX_PathData path;
26 path.AppendRect(0, 0, (float)m_Width, (float)m_Height);
27 device->DrawPath(&path, matrix, &stateData, m_backgroundColor,
28 m_backgroundColor, FXFILL_ALTERNATE);
29 int32_t leftPos = 0;
30 int32_t topPos = 0;
31 if (m_bFixedSize) {
32 leftPos = (m_Width - m_output->GetWidth()) / 2;
33 topPos = (m_Height - m_output->GetHeight()) / 2;
34 }
35 CFX_Matrix matri = *matrix;
36 if (m_Width < m_output->GetWidth() && m_Height < m_output->GetHeight()) {
37 CFX_Matrix matriScale((float)m_Width / (float)m_output->GetWidth(), 0.0,
38 0.0, (float)m_Height / (float)m_output->GetHeight(),
39 0.0, 0.0);
40 matriScale.Concat(*matrix);
41 matri = matriScale;
42 }
43 for (int32_t x = 0; x < m_output->GetWidth(); x++) {
44 for (int32_t y = 0; y < m_output->GetHeight(); y++) {
45 CFX_PathData rect;
46 rect.AppendRect((float)leftPos + x, (float)topPos + y,
47 (float)(leftPos + x + 1), (float)(topPos + y + 1));
48 if (m_output->Get(x, y)) {
49 CFX_GraphStateData data;
50 device->DrawPath(&rect, &matri, &data, m_barColor, 0, FXFILL_WINDING);
51 }
52 }
53 }
54 }
55
GetErrorCorrectionLevel() const56 int32_t CBC_TwoDimWriter::GetErrorCorrectionLevel() const {
57 return m_iCorrectLevel;
58 }
59
RenderResult(uint8_t * code,int32_t codeWidth,int32_t codeHeight)60 bool CBC_TwoDimWriter::RenderResult(uint8_t* code,
61 int32_t codeWidth,
62 int32_t codeHeight) {
63 int32_t inputWidth = codeWidth;
64 int32_t inputHeight = codeHeight;
65 int32_t tempWidth = inputWidth + 2;
66 int32_t tempHeight = inputHeight + 2;
67 float moduleHSize = std::min(m_ModuleWidth, m_ModuleHeight);
68 moduleHSize = std::min(moduleHSize, 8.0f);
69 moduleHSize = std::max(moduleHSize, 1.0f);
70 pdfium::base::CheckedNumeric<int32_t> scaledWidth = tempWidth;
71 pdfium::base::CheckedNumeric<int32_t> scaledHeight = tempHeight;
72 scaledWidth *= moduleHSize;
73 scaledHeight *= moduleHSize;
74
75 int32_t outputWidth = scaledWidth.ValueOrDie();
76 int32_t outputHeight = scaledHeight.ValueOrDie();
77 if (m_bFixedSize) {
78 if (m_Width < outputWidth || m_Height < outputHeight) {
79 return false;
80 }
81 } else {
82 if (m_Width > outputWidth || m_Height > outputHeight) {
83 outputWidth =
84 (int32_t)(outputWidth * ceil((float)m_Width / (float)outputWidth));
85 outputHeight =
86 (int32_t)(outputHeight * ceil((float)m_Height / (float)outputHeight));
87 }
88 }
89 int32_t multiX = (int32_t)ceil((float)outputWidth / (float)tempWidth);
90 int32_t multiY = (int32_t)ceil((float)outputHeight / (float)tempHeight);
91 if (m_bFixedSize) {
92 multiX = std::min(multiX, multiY);
93 multiY = multiX;
94 }
95 int32_t leftPadding = std::max((outputWidth - (inputWidth * multiX)) / 2, 0);
96 int32_t topPadding = std::max((outputHeight - (inputHeight * multiY)) / 2, 0);
97 m_output = pdfium::MakeUnique<CBC_CommonBitMatrix>();
98 m_output->Init(outputWidth, outputHeight);
99 for (int32_t inputY = 0, outputY = topPadding;
100 (inputY < inputHeight) && (outputY < outputHeight - multiY);
101 inputY++, outputY += multiY) {
102 for (int32_t inputX = 0, outputX = leftPadding;
103 (inputX < inputWidth) && (outputX < outputWidth - multiX);
104 inputX++, outputX += multiX) {
105 if (code[inputX + inputY * inputWidth] == 1 &&
106 !m_output->SetRegion(outputX, outputY, multiX, multiY)) {
107 return false;
108 }
109 }
110 }
111 return true;
112 }
113