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 "fxbarcode/cbc_ean13.h" 23 24 #include <memory> 25 26 #include "fxbarcode/oned/BC_OnedEAN13Writer.h" 27 #include "third_party/base/ptr_util.h" 28 29 CBC_EAN13::CBC_EAN13() 30 : CBC_OneCode(pdfium::MakeUnique<CBC_OnedEAN13Writer>()) {} 31 32 CBC_EAN13::~CBC_EAN13() {} 33 34 WideString CBC_EAN13::Preprocess(const WideStringView& contents) { 35 auto* pWriter = GetOnedEAN13Writer(); 36 WideString encodeContents = pWriter->FilterContents(contents); 37 int32_t length = encodeContents.GetLength(); 38 if (length <= 12) { 39 for (int32_t i = 0; i < 12 - length; i++) 40 encodeContents = wchar_t('0') + encodeContents; 41 42 ByteString byteString = encodeContents.UTF8Encode(); 43 int32_t checksum = pWriter->CalcChecksum(byteString); 44 byteString += checksum - 0 + '0'; 45 encodeContents = byteString.UTF8Decode(); 46 } 47 if (length > 13) 48 encodeContents = encodeContents.Left(13); 49 50 return encodeContents; 51 } 52 53 bool CBC_EAN13::Encode(const WideStringView& contents) { 54 if (contents.IsEmpty()) 55 return false; 56 57 BCFORMAT format = BCFORMAT_EAN_13; 58 int32_t outWidth = 0; 59 int32_t outHeight = 0; 60 WideString encodeContents = Preprocess(contents); 61 ByteString byteString = encodeContents.UTF8Encode(); 62 m_renderContents = encodeContents; 63 auto* pWriter = GetOnedEAN13Writer(); 64 std::unique_ptr<uint8_t, FxFreeDeleter> data( 65 pWriter->Encode(byteString, format, outWidth, outHeight)); 66 if (!data) 67 return false; 68 return pWriter->RenderResult(encodeContents.AsStringView(), data.get(), 69 outWidth); 70 } 71 72 bool CBC_EAN13::RenderDevice(CFX_RenderDevice* device, 73 const CFX_Matrix* matrix) { 74 return GetOnedEAN13Writer()->RenderDeviceResult( 75 device, matrix, m_renderContents.AsStringView()); 76 } 77 78 BC_TYPE CBC_EAN13::GetType() { 79 return BC_EAN13; 80 } 81 82 CBC_OnedEAN13Writer* CBC_EAN13::GetOnedEAN13Writer() { 83 return static_cast<CBC_OnedEAN13Writer*>(m_pBCWriter.get()); 84 } 85
