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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_textstate.h" | |
8 | |
9 #include "core/fpdfapi/font/cpdf_font.h" | |
10 #include "core/fpdfapi/fpdf_page/pageint.h" | |
11 #include "core/fpdfapi/fpdf_parser/cpdf_document.h" | |
12 | |
13 CPDF_TextState::CPDF_TextState() {} | |
14 CPDF_TextState::~CPDF_TextState() {} | |
15 | |
16 void CPDF_TextState::Emplace() { | |
17 m_Ref.Emplace(); | |
18 } | |
19 | |
20 CPDF_Font* CPDF_TextState::GetFont() const { | |
21 return m_Ref.GetObject()->m_pFont; | |
22 } | |
23 | |
24 void CPDF_TextState::SetFont(CPDF_Font* pFont) { | |
25 m_Ref.GetPrivateCopy()->SetFont(pFont); | |
26 } | |
27 | |
28 FX_FLOAT CPDF_TextState::GetFontSize() const { | |
29 return m_Ref.GetObject()->m_FontSize; | |
30 } | |
31 | |
32 void CPDF_TextState::SetFontSize(FX_FLOAT size) { | |
33 m_Ref.GetPrivateCopy()->m_FontSize = size; | |
34 } | |
35 | |
36 const FX_FLOAT* CPDF_TextState::GetMatrix() const { | |
37 return m_Ref.GetObject()->m_Matrix; | |
38 } | |
39 | |
40 FX_FLOAT* CPDF_TextState::GetMutableMatrix() { | |
41 return m_Ref.GetPrivateCopy()->m_Matrix; | |
42 } | |
43 | |
44 FX_FLOAT CPDF_TextState::GetCharSpace() const { | |
45 return m_Ref.GetObject()->m_CharSpace; | |
46 } | |
47 | |
48 void CPDF_TextState::SetCharSpace(FX_FLOAT sp) { | |
49 m_Ref.GetPrivateCopy()->m_CharSpace = sp; | |
50 } | |
51 | |
52 FX_FLOAT CPDF_TextState::GetWordSpace() const { | |
53 return m_Ref.GetObject()->m_WordSpace; | |
54 } | |
55 | |
56 void CPDF_TextState::SetWordSpace(FX_FLOAT sp) { | |
57 m_Ref.GetPrivateCopy()->m_WordSpace = sp; | |
58 } | |
59 | |
60 FX_FLOAT CPDF_TextState::GetFontSizeV() const { | |
61 return m_Ref.GetObject()->GetFontSizeV(); | |
62 } | |
63 | |
64 FX_FLOAT CPDF_TextState::GetFontSizeH() const { | |
65 return m_Ref.GetObject()->GetFontSizeH(); | |
66 } | |
67 | |
68 FX_FLOAT CPDF_TextState::GetBaselineAngle() const { | |
69 return m_Ref.GetObject()->GetBaselineAngle(); | |
70 } | |
71 | |
72 FX_FLOAT CPDF_TextState::GetShearAngle() const { | |
73 return m_Ref.GetObject()->GetShearAngle(); | |
74 } | |
75 | |
76 TextRenderingMode CPDF_TextState::GetTextMode() const { | |
77 return m_Ref.GetObject()->m_TextMode; | |
78 } | |
79 | |
80 void CPDF_TextState::SetTextMode(TextRenderingMode mode) { | |
81 m_Ref.GetPrivateCopy()->m_TextMode = mode; | |
82 } | |
83 | |
84 const FX_FLOAT* CPDF_TextState::GetCTM() const { | |
85 return m_Ref.GetObject()->m_CTM; | |
86 } | |
87 | |
88 FX_FLOAT* CPDF_TextState::GetMutableCTM() { | |
89 return m_Ref.GetPrivateCopy()->m_CTM; | |
90 } | |
91 | |
92 CPDF_TextState::TextData::TextData() | |
93 : m_pFont(nullptr), | |
94 m_pDocument(nullptr), | |
95 m_FontSize(1.0f), | |
96 m_CharSpace(0), | |
97 m_WordSpace(0), | |
98 m_TextMode(TextRenderingMode::MODE_FILL) { | |
99 m_Matrix[0] = m_Matrix[3] = 1.0f; | |
100 m_Matrix[1] = m_Matrix[2] = 0; | |
101 m_CTM[0] = m_CTM[3] = 1.0f; | |
102 m_CTM[1] = m_CTM[2] = 0; | |
103 } | |
104 | |
105 CPDF_TextState::TextData::TextData(const TextData& that) | |
106 : m_pFont(that.m_pFont), | |
107 m_pDocument(that.m_pDocument), | |
108 m_FontSize(that.m_FontSize), | |
109 m_CharSpace(that.m_CharSpace), | |
110 m_WordSpace(that.m_WordSpace), | |
111 m_TextMode(that.m_TextMode) { | |
112 for (int i = 0; i < 4; ++i) | |
113 m_Matrix[i] = that.m_Matrix[i]; | |
114 | |
115 for (int i = 0; i < 4; ++i) | |
116 m_CTM[i] = that.m_CTM[i]; | |
117 | |
118 if (m_pDocument && m_pFont) { | |
119 m_pFont = | |
120 m_pDocument->GetPageData()->GetFont(m_pFont->GetFontDict(), FALSE); | |
121 } | |
122 } | |
123 | |
124 CPDF_TextState::TextData::~TextData() { | |
125 if (m_pDocument && m_pFont) { | |
126 CPDF_DocPageData* pPageData = m_pDocument->GetPageData(); | |
127 if (pPageData && !pPageData->IsForceClear()) | |
128 pPageData->ReleaseFont(m_pFont->GetFontDict()); | |
129 } | |
130 } | |
131 | |
132 void CPDF_TextState::TextData::SetFont(CPDF_Font* pFont) { | |
133 CPDF_Document* pDoc = m_pDocument; | |
134 CPDF_DocPageData* pPageData = pDoc ? pDoc->GetPageData() : nullptr; | |
135 if (pPageData && m_pFont && !pPageData->IsForceClear()) | |
136 pPageData->ReleaseFont(m_pFont->GetFontDict()); | |
137 | |
138 m_pDocument = pFont ? pFont->m_pDocument : nullptr; | |
139 m_pFont = pFont; | |
140 } | |
141 | |
142 FX_FLOAT CPDF_TextState::TextData::GetFontSizeV() const { | |
143 return FXSYS_fabs(FXSYS_sqrt2(m_Matrix[1], m_Matrix[3]) * m_FontSize); | |
144 } | |
145 | |
146 FX_FLOAT CPDF_TextState::TextData::GetFontSizeH() const { | |
147 return FXSYS_fabs(FXSYS_sqrt2(m_Matrix[0], m_Matrix[2]) * m_FontSize); | |
148 } | |
149 | |
150 FX_FLOAT CPDF_TextState::TextData::GetBaselineAngle() const { | |
151 return FXSYS_atan2(m_Matrix[2], m_Matrix[0]); | |
152 } | |
153 | |
154 FX_FLOAT CPDF_TextState::TextData::GetShearAngle() const { | |
155 return GetBaselineAngle() + FXSYS_atan2(m_Matrix[1], m_Matrix[3]); | |
156 } | |
157 | |
158 bool SetTextRenderingModeFromInt(int iMode, TextRenderingMode* mode) { | |
159 if (iMode < 0 || iMode > 7) | |
160 return false; | |
161 *mode = static_cast<TextRenderingMode>(iMode); | |
162 return true; | |
163 } | |
164 | |
165 bool TextRenderingModeIsClipMode(const TextRenderingMode& mode) { | |
166 switch (mode) { | |
167 case TextRenderingMode::MODE_FILL_CLIP: | |
168 case TextRenderingMode::MODE_STROKE_CLIP: | |
169 case TextRenderingMode::MODE_FILL_STROKE_CLIP: | |
170 case TextRenderingMode::MODE_CLIP: | |
171 return true; | |
172 default: | |
173 return false; | |
174 } | |
175 } | |
176 | |
177 bool TextRenderingModeIsStrokeMode(const TextRenderingMode& mode) { | |
178 switch (mode) { | |
179 case TextRenderingMode::MODE_STROKE: | |
180 case TextRenderingMode::MODE_FILL_STROKE: | |
181 case TextRenderingMode::MODE_STROKE_CLIP: | |
182 case TextRenderingMode::MODE_FILL_STROKE_CLIP: | |
183 return true; | |
184 default: | |
185 return false; | |
186 } | |
187 } | |
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