cbc_ean13.cpp revision 4d3acf4ec42bf6e838f9060103aff98fbf170794 
1// Copyright 2016 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 * Copyright 2011 ZXing authors
8 *
9 * Licensed under the Apache License, Version 2.0 (the "License");
10 * you may not use this file except in compliance with the License.
11 * You may obtain a copy of the License at
12 *
13 *      http://www.apache.org/licenses/LICENSE-2.0
14 *
15 * Unless required by applicable law or agreed to in writing, software
16 * distributed under the License is distributed on an "AS IS" BASIS,
17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18 * See the License for the specific language governing permissions and
19 * limitations under the License.
20 */
21
22#include "xfa/fxbarcode/cbc_ean13.h"
23
24#include "xfa/fxbarcode/oned/BC_OnedEAN13Writer.h"
25
26CBC_EAN13::CBC_EAN13() : CBC_OneCode(new CBC_OnedEAN13Writer) {}
27
28CBC_EAN13::~CBC_EAN13() {}
29
30CFX_WideString CBC_EAN13::Preprocess(const CFX_WideStringC& contents) {
31  CFX_WideString encodeContents =
32      static_cast<CBC_OnedEAN13Writer*>(m_pBCWriter.get())
33          ->FilterContents(contents);
34  int32_t length = encodeContents.GetLength();
35  if (length <= 12) {
36    for (int32_t i = 0; i < 12 - length; i++)
37      encodeContents = FX_WCHAR('0') + encodeContents;
38
39    CFX_ByteString byteString = encodeContents.UTF8Encode();
40    int32_t checksum = static_cast<CBC_OnedEAN13Writer*>(m_pBCWriter.get())
41                           ->CalcChecksum(byteString);
42    byteString += checksum - 0 + '0';
43    encodeContents = byteString.UTF8Decode();
44  }
45  if (length > 13)
46    encodeContents = encodeContents.Mid(0, 13);
47
48  return encodeContents;
49}
50
51bool CBC_EAN13::Encode(const CFX_WideStringC& contents,
52                       bool isDevice,
53                       int32_t& e) {
54  if (contents.IsEmpty()) {
55    e = BCExceptionNoContents;
56    return false;
57  }
58  BCFORMAT format = BCFORMAT_EAN_13;
59  int32_t outWidth = 0;
60  int32_t outHeight = 0;
61  CFX_WideString encodeContents = Preprocess(contents);
62  CFX_ByteString byteString = encodeContents.UTF8Encode();
63  m_renderContents = encodeContents;
64  uint8_t* data = static_cast<CBC_OnedEAN13Writer*>(m_pBCWriter.get())
65                      ->Encode(byteString, format, outWidth, outHeight, e);
66  BC_EXCEPTION_CHECK_ReturnValue(e, false);
67  static_cast<CBC_OneDimWriter*>(m_pBCWriter.get())
68      ->RenderResult(encodeContents.AsStringC(), data, outWidth, isDevice, e);
69  FX_Free(data);
70  BC_EXCEPTION_CHECK_ReturnValue(e, false);
71  return true;
72}
73
74bool CBC_EAN13::RenderDevice(CFX_RenderDevice* device,
75                             const CFX_Matrix* matrix,
76                             int32_t& e) {
77  static_cast<CBC_OneDimWriter*>(m_pBCWriter.get())
78      ->RenderDeviceResult(device, matrix, m_renderContents.AsStringC(), e);
79  BC_EXCEPTION_CHECK_ReturnValue(e, false);
80  return true;
81}
82
83bool CBC_EAN13::RenderBitmap(CFX_DIBitmap*& pOutBitmap, int32_t& e) {
84  static_cast<CBC_OneDimWriter*>(m_pBCWriter.get())
85      ->RenderBitmapResult(pOutBitmap, m_renderContents.AsStringC(), e);
86  BC_EXCEPTION_CHECK_ReturnValue(e, false);
87  return true;
88}
89
90BC_TYPE CBC_EAN13::GetType() {
91  return BC_EAN13;
92}
93