// Copyright 2016 PDFium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com #include "core/fpdfdoc/cpdf_defaultappearance.h" #include <algorithm> #include "core/fpdfapi/parser/cpdf_simple_parser.h" #include "core/fpdfapi/parser/fpdf_parser_decode.h" #include "core/fxge/cfx_color.h" bool CPDF_DefaultAppearance::HasFont() { if (m_csDA.IsEmpty()) return false; CPDF_SimpleParser syntax(m_csDA.AsStringView()); return syntax.FindTagParamFromStart("Tf", 2); } ByteString CPDF_DefaultAppearance::GetFontString() { ByteString csFont; if (m_csDA.IsEmpty()) return csFont; CPDF_SimpleParser syntax(m_csDA.AsStringView()); if (syntax.FindTagParamFromStart("Tf", 2)) { csFont += syntax.GetWord(); csFont += " "; csFont += syntax.GetWord(); csFont += " "; csFont += syntax.GetWord(); } return csFont; } ByteString CPDF_DefaultAppearance::GetFont(float* fFontSize) { *fFontSize = 0.0f; if (m_csDA.IsEmpty()) return ByteString(); ByteString csFontNameTag; CPDF_SimpleParser syntax(m_csDA.AsStringView()); if (syntax.FindTagParamFromStart("Tf", 2)) { csFontNameTag = ByteString(syntax.GetWord()); csFontNameTag.Delete(0, 1); *fFontSize = FX_atof(syntax.GetWord()); } return PDF_NameDecode(csFontNameTag); } bool CPDF_DefaultAppearance::HasColor(PaintOperation nOperation) { if (m_csDA.IsEmpty()) return false; CPDF_SimpleParser syntax(m_csDA.AsStringView()); if (syntax.FindTagParamFromStart( (nOperation == PaintOperation::STROKE ? "G" : "g"), 1)) { return true; } if (syntax.FindTagParamFromStart( (nOperation == PaintOperation::STROKE ? "RG" : "rg"), 3)) { return true; } return syntax.FindTagParamFromStart( (nOperation == PaintOperation::STROKE ? "K" : "k"), 4); } ByteString CPDF_DefaultAppearance::GetColorString(PaintOperation nOperation) { ByteString csColor; if (m_csDA.IsEmpty()) return csColor; CPDF_SimpleParser syntax(m_csDA.AsStringView()); if (syntax.FindTagParamFromStart( (nOperation == PaintOperation::STROKE ? "G" : "g"), 1)) { csColor += syntax.GetWord(); csColor += " "; csColor += syntax.GetWord(); return csColor; } if (syntax.FindTagParamFromStart( (nOperation == PaintOperation::STROKE ? "RG" : "rg"), 3)) { csColor += syntax.GetWord(); csColor += " "; csColor += syntax.GetWord(); csColor += " "; csColor += syntax.GetWord(); csColor += " "; csColor += syntax.GetWord(); return csColor; } if (syntax.FindTagParamFromStart( (nOperation == PaintOperation::STROKE ? "K" : "k"), 4)) { csColor += syntax.GetWord(); csColor += " "; csColor += syntax.GetWord(); csColor += " "; csColor += syntax.GetWord(); csColor += " "; csColor += syntax.GetWord(); csColor += " "; csColor += syntax.GetWord(); } return csColor; } void CPDF_DefaultAppearance::GetColor(int& iColorType, float fc[4], PaintOperation nOperation) { iColorType = CFX_Color::kTransparent; for (int c = 0; c < 4; c++) fc[c] = 0; if (m_csDA.IsEmpty()) return; CPDF_SimpleParser syntax(m_csDA.AsStringView()); if (syntax.FindTagParamFromStart( (nOperation == PaintOperation::STROKE ? "G" : "g"), 1)) { iColorType = CFX_Color::kGray; fc[0] = FX_atof(syntax.GetWord()); return; } if (syntax.FindTagParamFromStart( (nOperation == PaintOperation::STROKE ? "RG" : "rg"), 3)) { iColorType = CFX_Color::kRGB; fc[0] = FX_atof(syntax.GetWord()); fc[1] = FX_atof(syntax.GetWord()); fc[2] = FX_atof(syntax.GetWord()); return; } if (syntax.FindTagParamFromStart( (nOperation == PaintOperation::STROKE ? "K" : "k"), 4)) { iColorType = CFX_Color::kCMYK; fc[0] = FX_atof(syntax.GetWord()); fc[1] = FX_atof(syntax.GetWord()); fc[2] = FX_atof(syntax.GetWord()); fc[3] = FX_atof(syntax.GetWord()); } } void CPDF_DefaultAppearance::GetColor(FX_ARGB& color, int& iColorType, PaintOperation nOperation) { color = 0; iColorType = CFX_Color::kTransparent; if (m_csDA.IsEmpty()) return; CPDF_SimpleParser syntax(m_csDA.AsStringView()); if (syntax.FindTagParamFromStart( (nOperation == PaintOperation::STROKE ? "G" : "g"), 1)) { iColorType = CFX_Color::kGray; float g = FX_atof(syntax.GetWord()) * 255 + 0.5f; color = ArgbEncode(255, (int)g, (int)g, (int)g); return; } if (syntax.FindTagParamFromStart( (nOperation == PaintOperation::STROKE ? "RG" : "rg"), 3)) { iColorType = CFX_Color::kRGB; float r = FX_atof(syntax.GetWord()) * 255 + 0.5f; float g = FX_atof(syntax.GetWord()) * 255 + 0.5f; float b = FX_atof(syntax.GetWord()) * 255 + 0.5f; color = ArgbEncode(255, (int)r, (int)g, (int)b); return; } if (syntax.FindTagParamFromStart( (nOperation == PaintOperation::STROKE ? "K" : "k"), 4)) { iColorType = CFX_Color::kCMYK; float c = FX_atof(syntax.GetWord()); float m = FX_atof(syntax.GetWord()); float y = FX_atof(syntax.GetWord()); float k = FX_atof(syntax.GetWord()); float r = 1.0f - std::min(1.0f, c + k); float g = 1.0f - std::min(1.0f, m + k); float b = 1.0f - std::min(1.0f, y + k); color = ArgbEncode(255, (int)(r * 255 + 0.5f), (int)(g * 255 + 0.5f), (int)(b * 255 + 0.5f)); } } bool CPDF_DefaultAppearance::HasTextMatrix() { if (m_csDA.IsEmpty()) return false; CPDF_SimpleParser syntax(m_csDA.AsStringView()); return syntax.FindTagParamFromStart("Tm", 6); } ByteString CPDF_DefaultAppearance::GetTextMatrixString() { ByteString csTM; if (m_csDA.IsEmpty()) return csTM; CPDF_SimpleParser syntax(m_csDA.AsStringView()); if (syntax.FindTagParamFromStart("Tm", 6)) { for (int i = 0; i < 6; i++) { csTM += syntax.GetWord(); csTM += " "; } csTM += syntax.GetWord(); } return csTM; } CFX_Matrix CPDF_DefaultAppearance::GetTextMatrix() { if (m_csDA.IsEmpty()) return CFX_Matrix(); CPDF_SimpleParser syntax(m_csDA.AsStringView()); if (!syntax.FindTagParamFromStart("Tm", 6)) return CFX_Matrix(); float f[6]; for (int i = 0; i < 6; i++) f[i] = FX_atof(syntax.GetWord()); return CFX_Matrix(f); }