diff options
Diffstat (limited to 'core/fpdfapi/page/cpdf_allstates.cpp')
| -rw-r--r-- | core/fpdfapi/page/cpdf_allstates.cpp | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/core/fpdfapi/page/cpdf_allstates.cpp b/core/fpdfapi/page/cpdf_allstates.cpp new file mode 100644 index 0000000000..f4a99c3206 --- /dev/null +++ b/core/fpdfapi/page/cpdf_allstates.cpp @@ -0,0 +1,175 @@ +// 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/fpdf_parser/cpdf_array.h" +#include "core/fpdfapi/fpdf_parser/cpdf_dictionary.h" +#include "core/fpdfapi/page/pageint.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); +} |