| // 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 "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_TextX = m_TextY = m_TextLineX = m_TextLineY = 0; |
| 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_TextX = src.m_TextX; |
| m_TextY = src.m_TextY; |
| m_TextLineX = src.m_TextLineX; |
| m_TextLineY = src.m_TextLineY; |
| 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; |
| 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); |
| } |