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_ean8.h" 23 24 #include <memory> 25 26 #include "fxbarcode/oned/BC_OnedEAN8Writer.h" 27 #include "third_party/base/ptr_util.h" 28 29 CBC_EAN8::CBC_EAN8() : CBC_OneCode(pdfium::MakeUnique<CBC_OnedEAN8Writer>()) {} 30 31 CBC_EAN8::~CBC_EAN8() {} 32 33 WideString CBC_EAN8::Preprocess(const WideStringView& contents) { 34 auto* pWriter = GetOnedEAN8Writer(); 35 WideString encodeContents = pWriter->FilterContents(contents); 36 int32_t length = encodeContents.GetLength(); 37 if (length <= 7) { 38 for (int32_t i = 0; i < 7 - length; i++) 39 encodeContents = wchar_t('0') + encodeContents; 40 41 ByteString byteString = encodeContents.UTF8Encode(); 42 int32_t checksum = pWriter->CalcChecksum(byteString); 43 encodeContents += wchar_t(checksum - 0 + '0'); 44 } 45 if (length > 8) 46 encodeContents = encodeContents.Left(8); 47 48 return encodeContents; 49 } 50 51 bool CBC_EAN8::Encode(const WideStringView& contents) { 52 if (contents.IsEmpty()) 53 return false; 54 55 BCFORMAT format = BCFORMAT_EAN_8; 56 int32_t outWidth = 0; 57 int32_t outHeight = 0; 58 WideString encodeContents = Preprocess(contents); 59 ByteString byteString = encodeContents.UTF8Encode(); 60 m_renderContents = encodeContents; 61 auto* pWriter = GetOnedEAN8Writer(); 62 std::unique_ptr<uint8_t, FxFreeDeleter> data( 63 pWriter->Encode(byteString, format, outWidth, outHeight)); 64 if (!data) 65 return false; 66 return pWriter->RenderResult(encodeContents.AsStringView(), data.get(), 67 outWidth); 68 } 69 70 bool CBC_EAN8::RenderDevice(CFX_RenderDevice* device, 71 const CFX_Matrix* matrix) { 72 return GetOnedEAN8Writer()->RenderDeviceResult( 73 device, matrix, m_renderContents.AsStringView()); 74 } 75 76 BC_TYPE CBC_EAN8::GetType() { 77 return BC_EAN8; 78 } 79 80 CBC_OnedEAN8Writer* CBC_EAN8::GetOnedEAN8Writer() { 81 return static_cast<CBC_OnedEAN8Writer*>(m_pBCWriter.get()); 82 } 83
