| // 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/fpdfdoc/cpdf_formcontrol.h" |
| |
| bool CPDF_DefaultAppearance::HasFont() { |
| if (m_csDA.IsEmpty()) |
| return false; |
| |
| CPDF_SimpleParser syntax(m_csDA.AsStringC()); |
| return syntax.FindTagParamFromStart("Tf", 2); |
| } |
| |
| CFX_ByteString CPDF_DefaultAppearance::GetFontString() { |
| CFX_ByteString csFont; |
| if (m_csDA.IsEmpty()) |
| return csFont; |
| |
| CPDF_SimpleParser syntax(m_csDA.AsStringC()); |
| if (syntax.FindTagParamFromStart("Tf", 2)) { |
| csFont += syntax.GetWord(); |
| csFont += " "; |
| csFont += syntax.GetWord(); |
| csFont += " "; |
| csFont += syntax.GetWord(); |
| } |
| return csFont; |
| } |
| |
| CFX_ByteString CPDF_DefaultAppearance::GetFont(float* fFontSize) { |
| *fFontSize = 0.0f; |
| if (m_csDA.IsEmpty()) |
| return CFX_ByteString(); |
| |
| CFX_ByteString csFontNameTag; |
| CPDF_SimpleParser syntax(m_csDA.AsStringC()); |
| if (syntax.FindTagParamFromStart("Tf", 2)) { |
| csFontNameTag = CFX_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.AsStringC()); |
| 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); |
| } |
| |
| CFX_ByteString CPDF_DefaultAppearance::GetColorString( |
| PaintOperation nOperation) { |
| CFX_ByteString csColor; |
| if (m_csDA.IsEmpty()) |
| return csColor; |
| |
| CPDF_SimpleParser syntax(m_csDA.AsStringC()); |
| 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 = COLORTYPE_TRANSPARENT; |
| for (int c = 0; c < 4; c++) |
| fc[c] = 0; |
| |
| if (m_csDA.IsEmpty()) |
| return; |
| |
| CPDF_SimpleParser syntax(m_csDA.AsStringC()); |
| if (syntax.FindTagParamFromStart( |
| (nOperation == PaintOperation::STROKE ? "G" : "g"), 1)) { |
| iColorType = COLORTYPE_GRAY; |
| fc[0] = FX_atof(syntax.GetWord()); |
| return; |
| } |
| if (syntax.FindTagParamFromStart( |
| (nOperation == PaintOperation::STROKE ? "RG" : "rg"), 3)) { |
| iColorType = COLORTYPE_RGB; |
| 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 = COLORTYPE_CMYK; |
| 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 = COLORTYPE_TRANSPARENT; |
| if (m_csDA.IsEmpty()) |
| return; |
| |
| CPDF_SimpleParser syntax(m_csDA.AsStringC()); |
| if (syntax.FindTagParamFromStart( |
| (nOperation == PaintOperation::STROKE ? "G" : "g"), 1)) { |
| iColorType = COLORTYPE_GRAY; |
| 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 = COLORTYPE_RGB; |
| 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 = COLORTYPE_CMYK; |
| 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.AsStringC()); |
| return syntax.FindTagParamFromStart("Tm", 6); |
| } |
| |
| CFX_ByteString CPDF_DefaultAppearance::GetTextMatrixString() { |
| CFX_ByteString csTM; |
| if (m_csDA.IsEmpty()) |
| return csTM; |
| |
| CPDF_SimpleParser syntax(m_csDA.AsStringC()); |
| 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.AsStringC()); |
| 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); |
| } |