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 #include "core/fpdfapi/page/cpdf_form.h" 8 9 #include "core/fpdfapi/page/cpdf_contentparser.h" 10 #include "core/fpdfapi/page/cpdf_pageobject.h" 11 #include "core/fpdfapi/page/cpdf_pageobjectholder.h" 12 #include "core/fpdfapi/parser/cpdf_dictionary.h" 13 #include "core/fpdfapi/parser/cpdf_stream.h" 14 #include "third_party/base/ptr_util.h" 15 16 CPDF_Form::CPDF_Form(CPDF_Document* pDoc, 17 CPDF_Dictionary* pPageResources, 18 CPDF_Stream* pFormStream, 19 CPDF_Dictionary* pParentResources) 20 : CPDF_PageObjectHolder(pDoc, pFormStream->GetDict()) { 21 m_pFormStream = pFormStream; 22 m_pResources = m_pFormDict->GetDictFor("Resources"); 23 m_pPageResources = pPageResources; 24 if (!m_pResources) 25 m_pResources = pParentResources; 26 if (!m_pResources) 27 m_pResources = pPageResources; 28 m_iTransparency = 0; 29 LoadTransInfo(); 30 } 31 32 CPDF_Form::~CPDF_Form() {} 33 34 void CPDF_Form::StartParse(CPDF_AllStates* pGraphicStates, 35 const CFX_Matrix* pParentMatrix, 36 CPDF_Type3Char* pType3Char, 37 std::set<const uint8_t*>* parsedSet) { 38 if (m_ParseState == CONTENT_PARSED || m_ParseState == CONTENT_PARSING) 39 return; 40 41 if (!parsedSet) { 42 if (!m_ParsedSet) 43 m_ParsedSet = pdfium::MakeUnique<std::set<const uint8_t*>>(); 44 parsedSet = m_ParsedSet.get(); 45 } 46 47 m_pParser = pdfium::MakeUnique<CPDF_ContentParser>( 48 this, pGraphicStates, pParentMatrix, pType3Char, parsedSet); 49 m_ParseState = CONTENT_PARSING; 50 } 51 52 void CPDF_Form::ParseContent() { 53 ParseContentWithParams(nullptr, nullptr, nullptr, nullptr); 54 } 55 56 void CPDF_Form::ParseContentWithParams(CPDF_AllStates* pGraphicStates, 57 const CFX_Matrix* pParentMatrix, 58 CPDF_Type3Char* pType3Char, 59 std::set<const uint8_t*>* parsedSet) { 60 StartParse(pGraphicStates, pParentMatrix, pType3Char, parsedSet); 61 ContinueParse(nullptr); 62 } 63
