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_textstate.h" 8 9 #include "core/fpdfapi/font/cpdf_font.h" 10 #include "core/fpdfapi/page/cpdf_docpagedata.h" 11 #include "core/fpdfapi/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 float CPDF_TextState::GetFontSize() const { 29 return m_Ref.GetObject()->m_FontSize; 30 } 31 32 void CPDF_TextState::SetFontSize(float size) { 33 m_Ref.GetPrivateCopy()->m_FontSize = size; 34 } 35 36 const float* CPDF_TextState::GetMatrix() const { 37 return m_Ref.GetObject()->m_Matrix; 38 } 39 40 float* CPDF_TextState::GetMutableMatrix() { 41 return m_Ref.GetPrivateCopy()->m_Matrix; 42 } 43 44 float CPDF_TextState::GetCharSpace() const { 45 return m_Ref.GetObject()->m_CharSpace; 46 } 47 48 void CPDF_TextState::SetCharSpace(float sp) { 49 m_Ref.GetPrivateCopy()->m_CharSpace = sp; 50 } 51 52 float CPDF_TextState::GetWordSpace() const { 53 return m_Ref.GetObject()->m_WordSpace; 54 } 55 56 void CPDF_TextState::SetWordSpace(float sp) { 57 m_Ref.GetPrivateCopy()->m_WordSpace = sp; 58 } 59 60 float CPDF_TextState::GetFontSizeV() const { 61 return m_Ref.GetObject()->GetFontSizeV(); 62 } 63 64 float CPDF_TextState::GetFontSizeH() const { 65 return m_Ref.GetObject()->GetFontSizeH(); 66 } 67 68 float CPDF_TextState::GetBaselineAngle() const { 69 return m_Ref.GetObject()->GetBaselineAngle(); 70 } 71 72 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 float* CPDF_TextState::GetCTM() const { 85 return m_Ref.GetObject()->m_CTM; 86 } 87 88 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 = m_pDocument->GetPageData()->GetFont(m_pFont->GetFontDict()); 120 } 121 122 CPDF_TextState::TextData::~TextData() { 123 ReleaseFont(); 124 } 125 126 void CPDF_TextState::TextData::SetFont(CPDF_Font* pFont) { 127 ReleaseFont(); 128 m_pDocument = pFont ? pFont->GetDocument() : nullptr; 129 m_pFont = pFont; 130 } 131 132 float CPDF_TextState::TextData::GetFontSizeV() const { 133 return fabs(FXSYS_sqrt2(m_Matrix[1], m_Matrix[3]) * m_FontSize); 134 } 135 136 float CPDF_TextState::TextData::GetFontSizeH() const { 137 return fabs(FXSYS_sqrt2(m_Matrix[0], m_Matrix[2]) * m_FontSize); 138 } 139 140 float CPDF_TextState::TextData::GetBaselineAngle() const { 141 return atan2(m_Matrix[2], m_Matrix[0]); 142 } 143 144 float CPDF_TextState::TextData::GetShearAngle() const { 145 return GetBaselineAngle() + atan2(m_Matrix[1], m_Matrix[3]); 146 } 147 148 void CPDF_TextState::TextData::ReleaseFont() { 149 if (!m_pDocument || !m_pFont) 150 return; 151 152 CPDF_DocPageData* pPageData = m_pDocument->GetPageData(); 153 if (pPageData && !pPageData->IsForceClear()) 154 pPageData->ReleaseFont(m_pFont->GetFontDict()); 155 } 156 157 bool SetTextRenderingModeFromInt(int iMode, TextRenderingMode* mode) { 158 if (iMode < 0 || iMode > 7) 159 return false; 160 *mode = static_cast<TextRenderingMode>(iMode); 161 return true; 162 } 163 164 bool TextRenderingModeIsClipMode(const TextRenderingMode& mode) { 165 switch (mode) { 166 case TextRenderingMode::MODE_FILL_CLIP: 167 case TextRenderingMode::MODE_STROKE_CLIP: 168 case TextRenderingMode::MODE_FILL_STROKE_CLIP: 169 case TextRenderingMode::MODE_CLIP: 170 return true; 171 default: 172 return false; 173 } 174 } 175 176 bool TextRenderingModeIsStrokeMode(const TextRenderingMode& mode) { 177 switch (mode) { 178 case TextRenderingMode::MODE_STROKE: 179 case TextRenderingMode::MODE_FILL_STROKE: 180 case TextRenderingMode::MODE_STROKE_CLIP: 181 case TextRenderingMode::MODE_FILL_STROKE_CLIP: 182 return true; 183 default: 184 return false; 185 } 186 } 187
