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| 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/fpdf_page/cpdf_clippath.h" | |
| 8 | |
| 9 #include <utility> | |
| 10 | |
| 11 #include "core/fpdfapi/fpdf_page/cpdf_path.h" | |
| 12 #include "core/fpdfapi/fpdf_page/cpdf_textobject.h" | |
| 13 #include "third_party/base/stl_util.h" | |
| 14 | |
| 15 #define FPDF_CLIPPATH_MAX_TEXTS 1024 | |
| 16 | |
| 17 CPDF_ClipPath::CPDF_ClipPath() {} | |
| 18 | |
| 19 CPDF_ClipPath::CPDF_ClipPath(const CPDF_ClipPath& that) : m_Ref(that.m_Ref) {} | |
| 20 | |
| 21 CPDF_ClipPath::~CPDF_ClipPath() {} | |
| 22 | |
| 23 uint32_t CPDF_ClipPath::GetPathCount() const { | |
| 24 return pdfium::CollectionSize<uint32_t>(m_Ref.GetObject()->m_PathAndTypeList); | |
| 25 } | |
| 26 | |
| 27 CPDF_Path CPDF_ClipPath::GetPath(size_t i) const { | |
| 28 return m_Ref.GetObject()->m_PathAndTypeList[i].first; | |
| 29 } | |
| 30 | |
| 31 uint8_t CPDF_ClipPath::GetClipType(size_t i) const { | |
| 32 return m_Ref.GetObject()->m_PathAndTypeList[i].second; | |
| 33 } | |
| 34 | |
| 35 uint32_t CPDF_ClipPath::GetTextCount() const { | |
| 36 return pdfium::CollectionSize<uint32_t>(m_Ref.GetObject()->m_TextList); | |
| 37 } | |
| 38 | |
| 39 CPDF_TextObject* CPDF_ClipPath::GetText(size_t i) const { | |
| 40 return m_Ref.GetObject()->m_TextList[i].get(); | |
| 41 } | |
| 42 | |
| 43 CFX_FloatRect CPDF_ClipPath::GetClipBox() const { | |
| 44 CFX_FloatRect rect; | |
| 45 FX_BOOL bStarted = FALSE; | |
| 46 int count = GetPathCount(); | |
| 47 if (count) { | |
| 48 rect = GetPath(0).GetBoundingBox(); | |
| 49 for (int i = 1; i < count; i++) { | |
| 50 CFX_FloatRect path_rect = GetPath(i).GetBoundingBox(); | |
| 51 rect.Intersect(path_rect); | |
| 52 } | |
| 53 bStarted = TRUE; | |
| 54 } | |
| 55 count = GetTextCount(); | |
| 56 if (count) { | |
| 57 CFX_FloatRect layer_rect; | |
| 58 FX_BOOL bLayerStarted = FALSE; | |
| 59 for (int i = 0; i < count; i++) { | |
| 60 CPDF_TextObject* pTextObj = GetText(i); | |
| 61 if (!pTextObj) { | |
| 62 if (!bStarted) { | |
| 63 rect = layer_rect; | |
| 64 bStarted = TRUE; | |
| 65 } else { | |
| 66 rect.Intersect(layer_rect); | |
| 67 } | |
| 68 bLayerStarted = FALSE; | |
| 69 } else { | |
| 70 if (!bLayerStarted) { | |
| 71 layer_rect = CFX_FloatRect(pTextObj->GetBBox(nullptr)); | |
| 72 bLayerStarted = TRUE; | |
| 73 } else { | |
| 74 layer_rect.Union(CFX_FloatRect(pTextObj->GetBBox(nullptr))); | |
| 75 } | |
| 76 } | |
| 77 } | |
| 78 } | |
| 79 return rect; | |
| 80 } | |
| 81 | |
| 82 void CPDF_ClipPath::AppendPath(CPDF_Path path, uint8_t type, bool bAutoMerge) { | |
| 83 PathData* pData = m_Ref.GetPrivateCopy(); | |
| 84 if (!pData->m_PathAndTypeList.empty() && bAutoMerge) { | |
| 85 const CPDF_Path& old_path = pData->m_PathAndTypeList.back().first; | |
| 86 if (old_path.IsRect()) { | |
| 87 CFX_FloatRect old_rect(old_path.GetPointX(0), old_path.GetPointY(0), | |
| 88 old_path.GetPointX(2), old_path.GetPointY(2)); | |
| 89 CFX_FloatRect new_rect = path.GetBoundingBox(); | |
| 90 if (old_rect.Contains(new_rect)) | |
| 91 pData->m_PathAndTypeList.pop_back(); | |
| 92 } | |
| 93 } | |
| 94 pData->m_PathAndTypeList.push_back(std::make_pair(path, type)); | |
| 95 } | |
| 96 | |
| 97 void CPDF_ClipPath::AppendTexts( | |
| 98 std::vector<std::unique_ptr<CPDF_TextObject>>* pTexts) { | |
| 99 PathData* pData = m_Ref.GetPrivateCopy(); | |
| 100 if (pData->m_TextList.size() + pTexts->size() <= FPDF_CLIPPATH_MAX_TEXTS) { | |
| 101 for (size_t i = 0; i < pTexts->size(); i++) | |
| 102 pData->m_TextList.push_back(std::move((*pTexts)[i])); | |
| 103 pData->m_TextList.push_back(std::unique_ptr<CPDF_TextObject>()); | |
| 104 } | |
| 105 pTexts->clear(); | |
| 106 } | |
| 107 | |
| 108 void CPDF_ClipPath::Transform(const CFX_Matrix& matrix) { | |
| 109 PathData* pData = m_Ref.GetPrivateCopy(); | |
| 110 for (auto& obj : pData->m_PathAndTypeList) | |
| 111 obj.first.Transform(&matrix); | |
| 112 for (auto& text : pData->m_TextList) { | |
| 113 if (text) | |
| 114 text->Transform(matrix); | |
| 115 } | |
| 116 } | |
| 117 | |
| 118 CPDF_ClipPath::PathData::PathData() {} | |
| 119 | |
| 120 CPDF_ClipPath::PathData::PathData(const PathData& that) { | |
| 121 m_PathAndTypeList = that.m_PathAndTypeList; | |
| 122 | |
| 123 m_TextList.resize(that.m_TextList.size()); | |
| 124 for (size_t i = 0; i < that.m_TextList.size(); ++i) { | |
| 125 if (that.m_TextList[i]) | |
| 126 m_TextList[i].reset(that.m_TextList[i]->Clone()); | |
| 127 } | |
| 128 } | |
| 129 | |
| 130 CPDF_ClipPath::PathData::~PathData() {} | |
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