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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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