// 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/fpdfapi/page/cpdf_allstates.h" #include <algorithm> #include "core/fpdfapi/page/cpdf_pageobjectholder.h" #include "core/fpdfapi/page/cpdf_streamcontentparser.h" #include "core/fpdfapi/page/pageint.h" #include "core/fpdfapi/parser/cpdf_array.h" #include "core/fpdfapi/parser/cpdf_dictionary.h" #include "core/fxge/cfx_graphstatedata.h" namespace { FX_FLOAT ClipFloat(FX_FLOAT f) { return std::max(0.0f, std::min(1.0f, f)); } } // namespace CPDF_AllStates::CPDF_AllStates() : m_TextLeading(0), m_TextRise(0), m_TextHorzScale(1.0f) {} CPDF_AllStates::~CPDF_AllStates() {} void CPDF_AllStates::Copy(const CPDF_AllStates& src) { CopyStates(src); m_TextMatrix = src.m_TextMatrix; m_ParentMatrix = src.m_ParentMatrix; m_CTM = src.m_CTM; m_TextPos = src.m_TextPos; m_TextLinePos = src.m_TextLinePos; m_TextLeading = src.m_TextLeading; m_TextRise = src.m_TextRise; m_TextHorzScale = src.m_TextHorzScale; } void CPDF_AllStates::SetLineDash(CPDF_Array* pArray, FX_FLOAT phase, FX_FLOAT scale) { m_GraphState.SetLineDash(pArray, phase, scale); } void CPDF_AllStates::ProcessExtGS(CPDF_Dictionary* pGS, CPDF_StreamContentParser* pParser) { for (const auto& it : *pGS) { const CFX_ByteString& key_str = it.first; CPDF_Object* pElement = it.second.get(); CPDF_Object* pObject = pElement ? pElement->GetDirect() : nullptr; if (!pObject) continue; uint32_t key = key_str.GetID(); switch (key) { case FXBSTR_ID('L', 'W', 0, 0): m_GraphState.SetLineWidth(pObject->GetNumber()); break; case FXBSTR_ID('L', 'C', 0, 0): m_GraphState.SetLineCap( static_cast<CFX_GraphStateData::LineCap>(pObject->GetInteger())); break; case FXBSTR_ID('L', 'J', 0, 0): m_GraphState.SetLineJoin( static_cast<CFX_GraphStateData::LineJoin>(pObject->GetInteger())); break; case FXBSTR_ID('M', 'L', 0, 0): m_GraphState.SetMiterLimit(pObject->GetNumber()); break; case FXBSTR_ID('D', 0, 0, 0): { CPDF_Array* pDash = pObject->AsArray(); if (!pDash) break; CPDF_Array* pArray = pDash->GetArrayAt(0); if (!pArray) break; SetLineDash(pArray, pDash->GetNumberAt(1), 1.0f); break; } case FXBSTR_ID('R', 'I', 0, 0): m_GeneralState.SetRenderIntent(pObject->GetString()); break; case FXBSTR_ID('F', 'o', 'n', 't'): { CPDF_Array* pFont = pObject->AsArray(); if (!pFont) break; m_TextState.SetFontSize(pFont->GetNumberAt(1)); m_TextState.SetFont(pParser->FindFont(pFont->GetStringAt(0))); break; } case FXBSTR_ID('T', 'R', 0, 0): if (pGS->KeyExist("TR2")) { continue; } case FXBSTR_ID('T', 'R', '2', 0): m_GeneralState.SetTR(pObject && !pObject->IsName() ? pObject : nullptr); break; case FXBSTR_ID('B', 'M', 0, 0): { CPDF_Array* pArray = pObject->AsArray(); m_GeneralState.SetBlendMode(pArray ? pArray->GetStringAt(0) : pObject->GetString()); if (m_GeneralState.GetBlendType() > FXDIB_BLEND_MULTIPLY) pParser->GetPageObjectHolder()->SetBackgroundAlphaNeeded(true); break; } case FXBSTR_ID('S', 'M', 'a', 's'): if (ToDictionary(pObject)) { m_GeneralState.SetSoftMask(pObject); m_GeneralState.SetSMaskMatrix(pParser->GetCurStates()->m_CTM); } else { m_GeneralState.SetSoftMask(nullptr); } break; case FXBSTR_ID('C', 'A', 0, 0): m_GeneralState.SetStrokeAlpha(ClipFloat(pObject->GetNumber())); break; case FXBSTR_ID('c', 'a', 0, 0): m_GeneralState.SetFillAlpha(ClipFloat(pObject->GetNumber())); break; case FXBSTR_ID('O', 'P', 0, 0): m_GeneralState.SetStrokeOP(!!pObject->GetInteger()); if (!pGS->KeyExist("op")) m_GeneralState.SetFillOP(!!pObject->GetInteger()); break; case FXBSTR_ID('o', 'p', 0, 0): m_GeneralState.SetFillOP(!!pObject->GetInteger()); break; case FXBSTR_ID('O', 'P', 'M', 0): m_GeneralState.SetOPMode(pObject->GetInteger()); break; case FXBSTR_ID('B', 'G', 0, 0): if (pGS->KeyExist("BG2")) { continue; } case FXBSTR_ID('B', 'G', '2', 0): m_GeneralState.SetBG(pObject); break; case FXBSTR_ID('U', 'C', 'R', 0): if (pGS->KeyExist("UCR2")) { continue; } case FXBSTR_ID('U', 'C', 'R', '2'): m_GeneralState.SetUCR(pObject); break; case FXBSTR_ID('H', 'T', 0, 0): m_GeneralState.SetHT(pObject); break; case FXBSTR_ID('F', 'L', 0, 0): m_GeneralState.SetFlatness(pObject->GetNumber()); break; case FXBSTR_ID('S', 'M', 0, 0): m_GeneralState.SetSmoothness(pObject->GetNumber()); break; case FXBSTR_ID('S', 'A', 0, 0): m_GeneralState.SetStrokeAdjust(!!pObject->GetInteger()); break; case FXBSTR_ID('A', 'I', 'S', 0): m_GeneralState.SetAlphaSource(!!pObject->GetInteger()); break; case FXBSTR_ID('T', 'K', 0, 0): m_GeneralState.SetTextKnockout(!!pObject->GetInteger()); break; } } m_GeneralState.SetMatrix(m_CTM); }