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_upca.h" 23 24 #include <memory> 25 26 #include "fxbarcode/oned/BC_OnedUPCAWriter.h" 27 #include "third_party/base/ptr_util.h" 28 29 CBC_UPCA::CBC_UPCA() : CBC_OneCode(pdfium::MakeUnique<CBC_OnedUPCAWriter>()) {} 30 31 CBC_UPCA::~CBC_UPCA() {} 32 33 WideString CBC_UPCA::Preprocess(const WideStringView& contents) { 34 CBC_OnedUPCAWriter* pWriter = GetOnedUPCAWriter(); 35 WideString encodeContents = pWriter->FilterContents(contents); 36 int32_t length = encodeContents.GetLength(); 37 if (length <= 11) { 38 for (int32_t i = 0; i < 11 - length; i++) 39 encodeContents = wchar_t('0') + encodeContents; 40 41 ByteString byteString = encodeContents.UTF8Encode(); 42 int32_t checksum = pWriter->CalcChecksum(byteString); 43 byteString += checksum - 0 + '0'; 44 encodeContents = byteString.UTF8Decode(); 45 } 46 if (length > 12) 47 encodeContents = encodeContents.Left(12); 48 49 return encodeContents; 50 } 51 52 bool CBC_UPCA::Encode(const WideStringView& contents) { 53 if (contents.IsEmpty()) 54 return false; 55 56 BCFORMAT format = BCFORMAT_UPC_A; 57 int32_t outWidth = 0; 58 int32_t outHeight = 0; 59 WideString encodeContents = Preprocess(contents); 60 ByteString byteString = encodeContents.UTF8Encode(); 61 m_renderContents = encodeContents; 62 63 CBC_OnedUPCAWriter* pWriter = GetOnedUPCAWriter(); 64 pWriter->Init(); 65 std::unique_ptr<uint8_t, FxFreeDeleter> data( 66 pWriter->Encode(byteString, format, outWidth, outHeight)); 67 if (!data) 68 return false; 69 return pWriter->RenderResult(encodeContents.AsStringView(), data.get(), 70 outWidth); 71 } 72 73 bool CBC_UPCA::RenderDevice(CFX_RenderDevice* device, 74 const CFX_Matrix* matrix) { 75 return GetOnedUPCAWriter()->RenderDeviceResult( 76 device, matrix, m_renderContents.AsStringView()); 77 } 78 79 BC_TYPE CBC_UPCA::GetType() { 80 return BC_UPCA; 81 } 82 83 CBC_OnedUPCAWriter* CBC_UPCA::GetOnedUPCAWriter() { 84 return static_cast<CBC_OnedUPCAWriter*>(m_pBCWriter.get()); 85 } 86
