diff options
Diffstat (limited to 'core/fpdfapi/fpdf_page/cpdf_allstates.cpp')
| -rw-r--r-- | core/fpdfapi/fpdf_page/cpdf_allstates.cpp | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/core/fpdfapi/fpdf_page/cpdf_allstates.cpp b/core/fpdfapi/fpdf_page/cpdf_allstates.cpp new file mode 100644 index 0000000000..96ccc77f81 --- /dev/null +++ b/core/fpdfapi/fpdf_page/cpdf_allstates.cpp @@ -0,0 +1,185 @@ +// 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/fpdf_page/cpdf_allstates.h" + +#include "core/fpdfapi/fpdf_page/pageint.h" +#include "core/fpdfapi/fpdf_parser/include/cpdf_array.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.Copy(src.m_TextMatrix); + m_ParentMatrix.Copy(src.m_ParentMatrix); + m_CTM.Copy(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) { + CFX_GraphStateData* pData = m_GraphState.GetModify(); + pData->m_DashPhase = phase * scale; + pData->SetDashCount(pArray->GetCount()); + for (FX_DWORD i = 0; i < pArray->GetCount(); i++) { + pData->m_DashArray[i] = pArray->GetNumberAt(i) * scale; + } +} + +void CPDF_AllStates::ProcessExtGS(CPDF_Dictionary* pGS, + CPDF_StreamContentParser* pParser) { + CPDF_GeneralStateData* pGeneralState = m_GeneralState.GetModify(); + 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; + + FX_DWORD key = key_str.GetID(); + switch (key) { + case FXBSTR_ID('L', 'W', 0, 0): + m_GraphState.GetModify()->m_LineWidth = pObject->GetNumber(); + break; + case FXBSTR_ID('L', 'C', 0, 0): + m_GraphState.GetModify()->m_LineCap = + (CFX_GraphStateData::LineCap)pObject->GetInteger(); + break; + case FXBSTR_ID('L', 'J', 0, 0): + m_GraphState.GetModify()->m_LineJoin = + (CFX_GraphStateData::LineJoin)pObject->GetInteger(); + break; + case FXBSTR_ID('M', 'L', 0, 0): + m_GraphState.GetModify()->m_MiterLimit = 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.GetModify()->m_FontSize = 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): + pGeneralState->m_pTR = + (pObject && !pObject->IsName()) ? pObject : nullptr; + break; + case FXBSTR_ID('B', 'M', 0, 0): { + CPDF_Array* pArray = pObject->AsArray(); + CFX_ByteString mode = + pArray ? pArray->GetStringAt(0) : pObject->GetString(); + + pGeneralState->SetBlendMode(mode); + if (pGeneralState->m_BlendType > FXDIB_BLEND_MULTIPLY) { + pParser->GetPageObjectHolder()->SetBackgroundAlphaNeeded(TRUE); + } + break; + } + case FXBSTR_ID('S', 'M', 'a', 's'): + if (ToDictionary(pObject)) { + pGeneralState->m_pSoftMask = pObject; + FXSYS_memcpy(pGeneralState->m_SMaskMatrix, + &pParser->GetCurStates()->m_CTM, sizeof(CFX_Matrix)); + } else { + pGeneralState->m_pSoftMask = NULL; + } + break; + case FXBSTR_ID('C', 'A', 0, 0): + pGeneralState->m_StrokeAlpha = ClipFloat(pObject->GetNumber()); + break; + case FXBSTR_ID('c', 'a', 0, 0): + pGeneralState->m_FillAlpha = ClipFloat(pObject->GetNumber()); + break; + case FXBSTR_ID('O', 'P', 0, 0): + pGeneralState->m_StrokeOP = pObject->GetInteger(); + if (!pGS->KeyExist("op")) { + pGeneralState->m_FillOP = pObject->GetInteger(); + } + break; + case FXBSTR_ID('o', 'p', 0, 0): + pGeneralState->m_FillOP = pObject->GetInteger(); + break; + case FXBSTR_ID('O', 'P', 'M', 0): + pGeneralState->m_OPMode = pObject->GetInteger(); + break; + case FXBSTR_ID('B', 'G', 0, 0): + if (pGS->KeyExist("BG2")) { + continue; + } + case FXBSTR_ID('B', 'G', '2', 0): + pGeneralState->m_pBG = pObject; + break; + case FXBSTR_ID('U', 'C', 'R', 0): + if (pGS->KeyExist("UCR2")) { + continue; + } + case FXBSTR_ID('U', 'C', 'R', '2'): + pGeneralState->m_pUCR = pObject; + break; + case FXBSTR_ID('H', 'T', 0, 0): + pGeneralState->m_pHT = pObject; + break; + case FXBSTR_ID('F', 'L', 0, 0): + pGeneralState->m_Flatness = pObject->GetNumber(); + break; + case FXBSTR_ID('S', 'M', 0, 0): + pGeneralState->m_Smoothness = pObject->GetNumber(); + break; + case FXBSTR_ID('S', 'A', 0, 0): + pGeneralState->m_StrokeAdjust = pObject->GetInteger(); + break; + case FXBSTR_ID('A', 'I', 'S', 0): + pGeneralState->m_AlphaSource = pObject->GetInteger(); + break; + case FXBSTR_ID('T', 'K', 0, 0): + pGeneralState->m_TextKnockout = pObject->GetInteger(); + break; + } + } + pGeneralState->m_Matrix = m_CTM; +} |