diff options
Diffstat (limited to 'core/fpdfapi')
| -rw-r--r-- | core/fpdfapi/page/cpdf_streamcontentparser.cpp | 1561 | ||||
| -rw-r--r-- | core/fpdfapi/page/cpdf_streamcontentparser.h | 225 | ||||
| -rw-r--r-- | core/fpdfapi/page/fpdf_page_parser.cpp | 1525 | ||||
| -rw-r--r-- | core/fpdfapi/page/pageint.h | 195 |
4 files changed, 1787 insertions, 1719 deletions
diff --git a/core/fpdfapi/page/cpdf_streamcontentparser.cpp b/core/fpdfapi/page/cpdf_streamcontentparser.cpp new file mode 100644 index 0000000000..60c9b527a3 --- /dev/null +++ b/core/fpdfapi/page/cpdf_streamcontentparser.cpp @@ -0,0 +1,1561 @@ +// 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_streamcontentparser.h" + +#include "core/fpdfapi/font/cpdf_font.h" +#include "core/fpdfapi/font/cpdf_type3font.h" +#include "core/fpdfapi/page/cpdf_allstates.h" +#include "core/fpdfapi/page/cpdf_docpagedata.h" +#include "core/fpdfapi/page/cpdf_form.h" +#include "core/fpdfapi/page/cpdf_formobject.h" +#include "core/fpdfapi/page/cpdf_image.h" +#include "core/fpdfapi/page/cpdf_imageobject.h" +#include "core/fpdfapi/page/cpdf_meshstream.h" +#include "core/fpdfapi/page/cpdf_pageobject.h" +#include "core/fpdfapi/page/cpdf_pathobject.h" +#include "core/fpdfapi/page/cpdf_shadingobject.h" +#include "core/fpdfapi/page/cpdf_shadingpattern.h" +#include "core/fpdfapi/page/cpdf_textobject.h" +#include "core/fpdfapi/page/pageint.h" +#include "core/fpdfapi/parser/cpdf_array.h" +#include "core/fpdfapi/parser/cpdf_document.h" +#include "core/fpdfapi/parser/cpdf_name.h" +#include "core/fpdfapi/parser/cpdf_number.h" +#include "core/fpdfapi/parser/fpdf_parser_decode.h" +#include "core/fxcrt/fx_safe_types.h" +#include "third_party/base/ptr_util.h" + +namespace { + +const int kMaxFormLevel = 30; + +const int kSingleCoordinatePair = 1; +const int kTensorCoordinatePairs = 16; +const int kCoonsCoordinatePairs = 12; +const int kSingleColorPerPatch = 1; +const int kQuadColorsPerPatch = 4; + +const char kPathOperatorSubpath = 'm'; +const char kPathOperatorLine = 'l'; +const char kPathOperatorCubicBezier1 = 'c'; +const char kPathOperatorCubicBezier2 = 'v'; +const char kPathOperatorCubicBezier3 = 'y'; +const char kPathOperatorClosePath = 'h'; +const char kPathOperatorRectangle[] = "re"; + +class CPDF_StreamParserAutoClearer { + public: + CPDF_StreamParserAutoClearer(CPDF_StreamParser** scoped_variable, + CPDF_StreamParser* new_parser) + : scoped_variable_(scoped_variable) { + *scoped_variable_ = new_parser; + } + ~CPDF_StreamParserAutoClearer() { *scoped_variable_ = nullptr; } + + private: + CPDF_StreamParser** scoped_variable_; +}; + +CFX_FloatRect GetShadingBBox(CPDF_ShadingPattern* pShading, + const CFX_Matrix& matrix) { + ShadingType type = pShading->GetShadingType(); + CPDF_Stream* pStream = ToStream(pShading->GetShadingObject()); + CPDF_ColorSpace* pCS = pShading->GetCS(); + if (!pStream || !pCS) + return CFX_FloatRect(0, 0, 0, 0); + + CPDF_MeshStream stream(type, pShading->GetFuncs(), pStream, pCS); + if (!stream.Load()) + return CFX_FloatRect(0, 0, 0, 0); + + CFX_FloatRect rect; + bool bStarted = false; + bool bGouraud = type == kFreeFormGouraudTriangleMeshShading || + type == kLatticeFormGouraudTriangleMeshShading; + + int point_count = kSingleCoordinatePair; + if (type == kTensorProductPatchMeshShading) + point_count = kTensorCoordinatePairs; + else if (type == kCoonsPatchMeshShading) + point_count = kCoonsCoordinatePairs; + + int color_count = kSingleColorPerPatch; + if (type == kCoonsPatchMeshShading || type == kTensorProductPatchMeshShading) + color_count = kQuadColorsPerPatch; + + while (!stream.BitStream()->IsEOF()) { + uint32_t flag = 0; + if (type != kLatticeFormGouraudTriangleMeshShading) + flag = stream.GetFlag(); + + if (!bGouraud && flag) { + point_count -= 4; + color_count -= 2; + } + + for (int i = 0; i < point_count; i++) { + FX_FLOAT x; + FX_FLOAT y; + stream.GetCoords(x, y); + if (bStarted) { + rect.UpdateRect(x, y); + } else { + rect.InitRect(x, y); + bStarted = true; + } + } + FX_SAFE_UINT32 nBits = stream.Components(); + nBits *= stream.ComponentBits(); + nBits *= color_count; + if (!nBits.IsValid()) + break; + + stream.BitStream()->SkipBits(nBits.ValueOrDie()); + if (bGouraud) + stream.BitStream()->ByteAlign(); + } + rect.Transform(&matrix); + return rect; +} + +} // namespace + +CPDF_StreamContentParser::CPDF_StreamContentParser( + CPDF_Document* pDocument, + CPDF_Dictionary* pPageResources, + CPDF_Dictionary* pParentResources, + const CFX_Matrix* pmtContentToUser, + CPDF_PageObjectHolder* pObjHolder, + CPDF_Dictionary* pResources, + CFX_FloatRect* pBBox, + CPDF_AllStates* pStates, + int level) + : m_pDocument(pDocument), + m_pPageResources(pPageResources), + m_pParentResources(pParentResources), + m_pResources(pResources), + m_pObjectHolder(pObjHolder), + m_Level(level), + m_ParamStartPos(0), + m_ParamCount(0), + m_pCurStates(new CPDF_AllStates), + m_pLastTextObject(nullptr), + m_DefFontSize(0), + m_pPathPoints(nullptr), + m_PathPointCount(0), + m_PathAllocSize(0), + m_PathCurrentX(0.0f), + m_PathCurrentY(0.0f), + m_PathClipType(0), + m_pLastImage(nullptr), + m_pLastImageDict(nullptr), + m_pLastCloneImageDict(nullptr), + m_bColored(false), + m_bResourceMissing(false) { + if (pmtContentToUser) + m_mtContentToUser = *pmtContentToUser; + if (!m_pResources) + m_pResources = m_pParentResources; + if (!m_pResources) + m_pResources = m_pPageResources; + if (pBBox) + m_BBox = *pBBox; + if (pStates) { + m_pCurStates->Copy(*pStates); + } else { + m_pCurStates->m_GeneralState.Emplace(); + m_pCurStates->m_GraphState.Emplace(); + m_pCurStates->m_TextState.Emplace(); + m_pCurStates->m_ColorState.Emplace(); + } + for (size_t i = 0; i < FX_ArraySize(m_Type3Data); ++i) { + m_Type3Data[i] = 0.0; + } +} + +CPDF_StreamContentParser::~CPDF_StreamContentParser() { + ClearAllParams(); + FX_Free(m_pPathPoints); + if (m_pLastImageDict) { + m_pLastImageDict->Release(); + } + if (m_pLastCloneImageDict) { + m_pLastCloneImageDict->Release(); + } +} + +int CPDF_StreamContentParser::GetNextParamPos() { + if (m_ParamCount == kParamBufSize) { + m_ParamStartPos++; + if (m_ParamStartPos == kParamBufSize) { + m_ParamStartPos = 0; + } + if (m_ParamBuf[m_ParamStartPos].m_Type == 0) { + if (CPDF_Object* pObject = m_ParamBuf[m_ParamStartPos].m_pObject) + pObject->Release(); + } + return m_ParamStartPos; + } + int index = m_ParamStartPos + m_ParamCount; + if (index >= kParamBufSize) { + index -= kParamBufSize; + } + m_ParamCount++; + return index; +} + +void CPDF_StreamContentParser::AddNameParam(const FX_CHAR* name, int len) { + CFX_ByteStringC bsName(name, len); + ContentParam& param = m_ParamBuf[GetNextParamPos()]; + if (len > 32) { + param.m_Type = ContentParam::OBJECT; + param.m_pObject = new CPDF_Name( + m_pDocument->GetByteStringPool()->Intern(PDF_NameDecode(bsName))); + } else { + param.m_Type = ContentParam::NAME; + if (bsName.Find('#') == -1) { + FXSYS_memcpy(param.m_Name.m_Buffer, name, len); + param.m_Name.m_Len = len; + } else { + CFX_ByteString str = PDF_NameDecode(bsName); + FXSYS_memcpy(param.m_Name.m_Buffer, str.c_str(), str.GetLength()); + param.m_Name.m_Len = str.GetLength(); + } + } +} + +void CPDF_StreamContentParser::AddNumberParam(const FX_CHAR* str, int len) { + ContentParam& param = m_ParamBuf[GetNextParamPos()]; + param.m_Type = ContentParam::NUMBER; + param.m_Number.m_bInteger = + FX_atonum(CFX_ByteStringC(str, len), ¶m.m_Number.m_Integer); +} + +void CPDF_StreamContentParser::AddObjectParam(CPDF_Object* pObj) { + ContentParam& param = m_ParamBuf[GetNextParamPos()]; + param.m_Type = ContentParam::OBJECT; + param.m_pObject = pObj; +} + +void CPDF_StreamContentParser::ClearAllParams() { + uint32_t index = m_ParamStartPos; + for (uint32_t i = 0; i < m_ParamCount; i++) { + if (m_ParamBuf[index].m_Type == 0) { + if (CPDF_Object* pObject = m_ParamBuf[index].m_pObject) + pObject->Release(); + } + index++; + if (index == kParamBufSize) { + index = 0; + } + } + m_ParamStartPos = 0; + m_ParamCount = 0; +} + +CPDF_Object* CPDF_StreamContentParser::GetObject(uint32_t index) { + if (index >= m_ParamCount) { + return nullptr; + } + int real_index = m_ParamStartPos + m_ParamCount - index - 1; + if (real_index >= kParamBufSize) { + real_index -= kParamBufSize; + } + ContentParam& param = m_ParamBuf[real_index]; + if (param.m_Type == ContentParam::NUMBER) { + CPDF_Number* pNumber = param.m_Number.m_bInteger + ? new CPDF_Number(param.m_Number.m_Integer) + : new CPDF_Number(param.m_Number.m_Float); + + param.m_Type = ContentParam::OBJECT; + param.m_pObject = pNumber; + return pNumber; + } + if (param.m_Type == ContentParam::NAME) { + CPDF_Name* pName = new CPDF_Name(m_pDocument->GetByteStringPool()->Intern( + CFX_ByteString(param.m_Name.m_Buffer, param.m_Name.m_Len))); + param.m_Type = ContentParam::OBJECT; + param.m_pObject = pName; + return pName; + } + if (param.m_Type == ContentParam::OBJECT) { + return param.m_pObject; + } + ASSERT(FALSE); + return nullptr; +} + +CFX_ByteString CPDF_StreamContentParser::GetString(uint32_t index) { + if (index >= m_ParamCount) { + return CFX_ByteString(); + } + int real_index = m_ParamStartPos + m_ParamCount - index - 1; + if (real_index >= kParamBufSize) { + real_index -= kParamBufSize; + } + ContentParam& param = m_ParamBuf[real_index]; + if (param.m_Type == ContentParam::NAME) { + return CFX_ByteString(param.m_Name.m_Buffer, param.m_Name.m_Len); + } + if (param.m_Type == 0 && param.m_pObject) { + return param.m_pObject->GetString(); + } + return CFX_ByteString(); +} + +FX_FLOAT CPDF_StreamContentParser::GetNumber(uint32_t index) { + if (index >= m_ParamCount) { + return 0; + } + int real_index = m_ParamStartPos + m_ParamCount - index - 1; + if (real_index >= kParamBufSize) { + real_index -= kParamBufSize; + } + ContentParam& param = m_ParamBuf[real_index]; + if (param.m_Type == ContentParam::NUMBER) { + return param.m_Number.m_bInteger ? (FX_FLOAT)param.m_Number.m_Integer + : param.m_Number.m_Float; + } + if (param.m_Type == 0 && param.m_pObject) { + return param.m_pObject->GetNumber(); + } + return 0; +} + +void CPDF_StreamContentParser::SetGraphicStates(CPDF_PageObject* pObj, + bool bColor, + bool bText, + bool bGraph) { + pObj->m_GeneralState = m_pCurStates->m_GeneralState; + pObj->m_ClipPath = m_pCurStates->m_ClipPath; + pObj->m_ContentMark = m_CurContentMark; + if (bColor) { + pObj->m_ColorState = m_pCurStates->m_ColorState; + } + if (bGraph) { + pObj->m_GraphState = m_pCurStates->m_GraphState; + } + if (bText) { + pObj->m_TextState = m_pCurStates->m_TextState; + } +} + +// static +CPDF_StreamContentParser::OpCodes +CPDF_StreamContentParser::InitializeOpCodes() { + return OpCodes({ + {FXBSTR_ID('"', 0, 0, 0), + &CPDF_StreamContentParser::Handle_NextLineShowText_Space}, + {FXBSTR_ID('\'', 0, 0, 0), + &CPDF_StreamContentParser::Handle_NextLineShowText}, + {FXBSTR_ID('B', 0, 0, 0), + &CPDF_StreamContentParser::Handle_FillStrokePath}, + {FXBSTR_ID('B', '*', 0, 0), + &CPDF_StreamContentParser::Handle_EOFillStrokePath}, + {FXBSTR_ID('B', 'D', 'C', 0), + &CPDF_StreamContentParser::Handle_BeginMarkedContent_Dictionary}, + {FXBSTR_ID('B', 'I', 0, 0), &CPDF_StreamContentParser::Handle_BeginImage}, + {FXBSTR_ID('B', 'M', 'C', 0), + &CPDF_StreamContentParser::Handle_BeginMarkedContent}, + {FXBSTR_ID('B', 'T', 0, 0), &CPDF_StreamContentParser::Handle_BeginText}, + {FXBSTR_ID('C', 'S', 0, 0), + &CPDF_StreamContentParser::Handle_SetColorSpace_Stroke}, + {FXBSTR_ID('D', 'P', 0, 0), + &CPDF_StreamContentParser::Handle_MarkPlace_Dictionary}, + {FXBSTR_ID('D', 'o', 0, 0), + &CPDF_StreamContentParser::Handle_ExecuteXObject}, + {FXBSTR_ID('E', 'I', 0, 0), &CPDF_StreamContentParser::Handle_EndImage}, + {FXBSTR_ID('E', 'M', 'C', 0), + &CPDF_StreamContentParser::Handle_EndMarkedContent}, + {FXBSTR_ID('E', 'T', 0, 0), &CPDF_StreamContentParser::Handle_EndText}, + {FXBSTR_ID('F', 0, 0, 0), &CPDF_StreamContentParser::Handle_FillPathOld}, + {FXBSTR_ID('G', 0, 0, 0), + &CPDF_StreamContentParser::Handle_SetGray_Stroke}, + {FXBSTR_ID('I', 'D', 0, 0), + &CPDF_StreamContentParser::Handle_BeginImageData}, + {FXBSTR_ID('J', 0, 0, 0), &CPDF_StreamContentParser::Handle_SetLineCap}, + {FXBSTR_ID('K', 0, 0, 0), + &CPDF_StreamContentParser::Handle_SetCMYKColor_Stroke}, + {FXBSTR_ID('M', 0, 0, 0), + &CPDF_StreamContentParser::Handle_SetMiterLimit}, + {FXBSTR_ID('M', 'P', 0, 0), &CPDF_StreamContentParser::Handle_MarkPlace}, + {FXBSTR_ID('Q', 0, 0, 0), + &CPDF_StreamContentParser::Handle_RestoreGraphState}, + {FXBSTR_ID('R', 'G', 0, 0), + &CPDF_StreamContentParser::Handle_SetRGBColor_Stroke}, + {FXBSTR_ID('S', 0, 0, 0), &CPDF_StreamContentParser::Handle_StrokePath}, + {FXBSTR_ID('S', 'C', 0, 0), + &CPDF_StreamContentParser::Handle_SetColor_Stroke}, + {FXBSTR_ID('S', 'C', 'N', 0), + &CPDF_StreamContentParser::Handle_SetColorPS_Stroke}, + {FXBSTR_ID('T', '*', 0, 0), + &CPDF_StreamContentParser::Handle_MoveToNextLine}, + {FXBSTR_ID('T', 'D', 0, 0), + &CPDF_StreamContentParser::Handle_MoveTextPoint_SetLeading}, + {FXBSTR_ID('T', 'J', 0, 0), + &CPDF_StreamContentParser::Handle_ShowText_Positioning}, + {FXBSTR_ID('T', 'L', 0, 0), + &CPDF_StreamContentParser::Handle_SetTextLeading}, + {FXBSTR_ID('T', 'c', 0, 0), + &CPDF_StreamContentParser::Handle_SetCharSpace}, + {FXBSTR_ID('T', 'd', 0, 0), + &CPDF_StreamContentParser::Handle_MoveTextPoint}, + {FXBSTR_ID('T', 'f', 0, 0), &CPDF_StreamContentParser::Handle_SetFont}, + {FXBSTR_ID('T', 'j', 0, 0), &CPDF_StreamContentParser::Handle_ShowText}, + {FXBSTR_ID('T', 'm', 0, 0), + &CPDF_StreamContentParser::Handle_SetTextMatrix}, + {FXBSTR_ID('T', 'r', 0, 0), + &CPDF_StreamContentParser::Handle_SetTextRenderMode}, + {FXBSTR_ID('T', 's', 0, 0), + &CPDF_StreamContentParser::Handle_SetTextRise}, + {FXBSTR_ID('T', 'w', 0, 0), + &CPDF_StreamContentParser::Handle_SetWordSpace}, + {FXBSTR_ID('T', 'z', 0, 0), + &CPDF_StreamContentParser::Handle_SetHorzScale}, + {FXBSTR_ID('W', 0, 0, 0), &CPDF_StreamContentParser::Handle_Clip}, + {FXBSTR_ID('W', '*', 0, 0), &CPDF_StreamContentParser::Handle_EOClip}, + {FXBSTR_ID('b', 0, 0, 0), + &CPDF_StreamContentParser::Handle_CloseFillStrokePath}, + {FXBSTR_ID('b', '*', 0, 0), + &CPDF_StreamContentParser::Handle_CloseEOFillStrokePath}, + {FXBSTR_ID('c', 0, 0, 0), &CPDF_StreamContentParser::Handle_CurveTo_123}, + {FXBSTR_ID('c', 'm', 0, 0), + &CPDF_StreamContentParser::Handle_ConcatMatrix}, + {FXBSTR_ID('c', 's', 0, 0), + &CPDF_StreamContentParser::Handle_SetColorSpace_Fill}, + {FXBSTR_ID('d', 0, 0, 0), &CPDF_StreamContentParser::Handle_SetDash}, + {FXBSTR_ID('d', '0', 0, 0), + &CPDF_StreamContentParser::Handle_SetCharWidth}, + {FXBSTR_ID('d', '1', 0, 0), + &CPDF_StreamContentParser::Handle_SetCachedDevice}, + {FXBSTR_ID('f', 0, 0, 0), &CPDF_StreamContentParser::Handle_FillPath}, + {FXBSTR_ID('f', '*', 0, 0), &CPDF_StreamContentParser::Handle_EOFillPath}, + {FXBSTR_ID('g', 0, 0, 0), &CPDF_StreamContentParser::Handle_SetGray_Fill}, + {FXBSTR_ID('g', 's', 0, 0), + &CPDF_StreamContentParser::Handle_SetExtendGraphState}, + {FXBSTR_ID('h', 0, 0, 0), &CPDF_StreamContentParser::Handle_ClosePath}, + {FXBSTR_ID('i', 0, 0, 0), &CPDF_StreamContentParser::Handle_SetFlat}, + {FXBSTR_ID('j', 0, 0, 0), &CPDF_StreamContentParser::Handle_SetLineJoin}, + {FXBSTR_ID('k', 0, 0, 0), + &CPDF_StreamContentParser::Handle_SetCMYKColor_Fill}, + {FXBSTR_ID('l', 0, 0, 0), &CPDF_StreamContentParser::Handle_LineTo}, + {FXBSTR_ID('m', 0, 0, 0), &CPDF_StreamContentParser::Handle_MoveTo}, + {FXBSTR_ID('n', 0, 0, 0), &CPDF_StreamContentParser::Handle_EndPath}, + {FXBSTR_ID('q', 0, 0, 0), + &CPDF_StreamContentParser::Handle_SaveGraphState}, + {FXBSTR_ID('r', 'e', 0, 0), &CPDF_StreamContentParser::Handle_Rectangle}, + {FXBSTR_ID('r', 'g', 0, 0), + &CPDF_StreamContentParser::Handle_SetRGBColor_Fill}, + {FXBSTR_ID('r', 'i', 0, 0), + &CPDF_StreamContentParser::Handle_SetRenderIntent}, + {FXBSTR_ID('s', 0, 0, 0), + &CPDF_StreamContentParser::Handle_CloseStrokePath}, + {FXBSTR_ID('s', 'c', 0, 0), + &CPDF_StreamContentParser::Handle_SetColor_Fill}, + {FXBSTR_ID('s', 'c', 'n', 0), + &CPDF_StreamContentParser::Handle_SetColorPS_Fill}, + {FXBSTR_ID('s', 'h', 0, 0), &CPDF_StreamContentParser::Handle_ShadeFill}, + {FXBSTR_ID('v', 0, 0, 0), &CPDF_StreamContentParser::Handle_CurveTo_23}, + {FXBSTR_ID('w', 0, 0, 0), &CPDF_StreamContentParser::Handle_SetLineWidth}, + {FXBSTR_ID('y', 0, 0, 0), &CPDF_StreamContentParser::Handle_CurveTo_13}, + }); +} + +void CPDF_StreamContentParser::OnOperator(const FX_CHAR* op) { + int i = 0; + uint32_t opid = 0; + while (i < 4 && op[i]) { + opid = (opid << 8) + op[i]; + i++; + } + while (i < 4) { + opid <<= 8; + i++; + } + + static const OpCodes s_OpCodes = InitializeOpCodes(); + + auto it = s_OpCodes.find(opid); + if (it != s_OpCodes.end()) + (this->*it->second)(); +} + +void CPDF_StreamContentParser::Handle_CloseFillStrokePath() { + Handle_ClosePath(); + AddPathObject(FXFILL_WINDING, true); +} + +void CPDF_StreamContentParser::Handle_FillStrokePath() { + AddPathObject(FXFILL_WINDING, true); +} + +void CPDF_StreamContentParser::Handle_CloseEOFillStrokePath() { + AddPathPoint(m_PathStartX, m_PathStartY, FXPT_LINETO | FXPT_CLOSEFIGURE); + AddPathObject(FXFILL_ALTERNATE, true); +} + +void CPDF_StreamContentParser::Handle_EOFillStrokePath() { + AddPathObject(FXFILL_ALTERNATE, true); +} + +void CPDF_StreamContentParser::Handle_BeginMarkedContent_Dictionary() { + CFX_ByteString tag = GetString(1); + CPDF_Object* pProperty = GetObject(0); + if (!pProperty) { + return; + } + bool bDirect = true; + if (pProperty->IsName()) { + pProperty = FindResourceObj("Properties", pProperty->GetString()); + if (!pProperty) + return; + bDirect = false; + } + if (CPDF_Dictionary* pDict = pProperty->AsDictionary()) { + m_CurContentMark.AddMark(tag, pDict, bDirect); + } +} + +void CPDF_StreamContentParser::Handle_BeginImage() { + FX_FILESIZE savePos = m_pSyntax->GetPos(); + CPDF_Dictionary* pDict = + new CPDF_Dictionary(m_pDocument->GetByteStringPool()); + while (1) { + CPDF_StreamParser::SyntaxType type = m_pSyntax->ParseNextElement(); + if (type == CPDF_StreamParser::Keyword) { + CFX_ByteString bsKeyword(m_pSyntax->GetWordBuf(), + m_pSyntax->GetWordSize()); + if (bsKeyword != "ID") { + m_pSyntax->SetPos(savePos); + pDict->Release(); + return; + } + } + if (type != CPDF_StreamParser::Name) { + break; + } + CFX_ByteString key((const FX_CHAR*)m_pSyntax->GetWordBuf() + 1, + m_pSyntax->GetWordSize() - 1); + std::unique_ptr<CPDF_Object, ReleaseDeleter<CPDF_Object>> pObj( + m_pSyntax->ReadNextObject(false, 0)); + if (!key.IsEmpty()) { + uint32_t dwObjNum = pObj ? pObj->GetObjNum() : 0; + if (dwObjNum) + pDict->SetReferenceFor(key, m_pDocument, dwObjNum); + else + pDict->SetFor(key, pObj.release()); + } + } + PDF_ReplaceAbbr(pDict); + CPDF_Object* pCSObj = nullptr; + if (pDict->KeyExist("ColorSpace")) { + pCSObj = pDict->GetDirectObjectFor("ColorSpace"); + if (pCSObj->IsName()) { + CFX_ByteString name = pCSObj->GetString(); + if (name != "DeviceRGB" && name != "DeviceGray" && name != "DeviceCMYK") { + pCSObj = FindResourceObj("ColorSpace", name); + if (pCSObj && pCSObj->IsInline()) { + pCSObj = pCSObj->Clone(); + pDict->SetFor("ColorSpace", pCSObj); + } + } + } + } + pDict->SetNameFor("Subtype", "Image"); + UniqueStream pStream(m_pSyntax->ReadInlineStream(m_pDocument, pDict, pCSObj)); + bool bGaveDictAway = !!pStream; + while (1) { + CPDF_StreamParser::SyntaxType type = m_pSyntax->ParseNextElement(); + if (type == CPDF_StreamParser::EndOfData) { + break; + } + if (type != CPDF_StreamParser::Keyword) { + continue; + } + if (m_pSyntax->GetWordSize() == 2 && m_pSyntax->GetWordBuf()[0] == 'E' && + m_pSyntax->GetWordBuf()[1] == 'I') { + break; + } + } + CPDF_ImageObject* pImgObj = AddImage(std::move(pStream)); + if (!pImgObj && !bGaveDictAway) + pDict->Release(); +} + +void CPDF_StreamContentParser::Handle_BeginMarkedContent() { + m_CurContentMark.AddMark(GetString(0), nullptr, FALSE); +} + +void CPDF_StreamContentParser::Handle_BeginText() { + m_pCurStates->m_TextMatrix.Set(1.0f, 0, 0, 1.0f, 0, 0); + OnChangeTextMatrix(); + m_pCurStates->m_TextX = 0; + m_pCurStates->m_TextY = 0; + m_pCurStates->m_TextLineX = 0; + m_pCurStates->m_TextLineY = 0; +} + +void CPDF_StreamContentParser::Handle_CurveTo_123() { + AddPathPoint(GetNumber(5), GetNumber(4), FXPT_BEZIERTO); + AddPathPoint(GetNumber(3), GetNumber(2), FXPT_BEZIERTO); + AddPathPoint(GetNumber(1), GetNumber(0), FXPT_BEZIERTO); +} + +void CPDF_StreamContentParser::Handle_ConcatMatrix() { + CFX_Matrix new_matrix(GetNumber(5), GetNumber(4), GetNumber(3), GetNumber(2), + GetNumber(1), GetNumber(0)); + new_matrix.Concat(m_pCurStates->m_CTM); + m_pCurStates->m_CTM = new_matrix; + OnChangeTextMatrix(); +} + +void CPDF_StreamContentParser::Handle_SetColorSpace_Fill() { + CPDF_ColorSpace* pCS = FindColorSpace(GetString(0)); + if (!pCS) + return; + + m_pCurStates->m_ColorState.GetMutableFillColor()->SetColorSpace(pCS); +} + +void CPDF_StreamContentParser::Handle_SetColorSpace_Stroke() { + CPDF_ColorSpace* pCS = FindColorSpace(GetString(0)); + if (!pCS) + return; + + m_pCurStates->m_ColorState.GetMutableStrokeColor()->SetColorSpace(pCS); +} + +void CPDF_StreamContentParser::Handle_SetDash() { + CPDF_Array* pArray = ToArray(GetObject(1)); + if (!pArray) + return; + + m_pCurStates->SetLineDash(pArray, GetNumber(0), 1.0f); +} + +void CPDF_StreamContentParser::Handle_SetCharWidth() { + m_Type3Data[0] = GetNumber(1); + m_Type3Data[1] = GetNumber(0); + m_bColored = true; +} + +void CPDF_StreamContentParser::Handle_SetCachedDevice() { + for (int i = 0; i < 6; i++) { + m_Type3Data[i] = GetNumber(5 - i); + } + m_bColored = false; +} + +void CPDF_StreamContentParser::Handle_ExecuteXObject() { + CFX_ByteString name = GetString(0); + if (name == m_LastImageName && m_pLastImage && m_pLastImage->GetStream() && + m_pLastImage->GetStream()->GetObjNum()) { + AddImage(m_pLastImage); + return; + } + + CPDF_Stream* pXObject = ToStream(FindResourceObj("XObject", name)); + if (!pXObject) { + m_bResourceMissing = true; + return; + } + + CFX_ByteString type; + if (pXObject->GetDict()) + type = pXObject->GetDict()->GetStringFor("Subtype"); + + if (type == "Image") { + CPDF_ImageObject* pObj = AddImage(pXObject->GetObjNum()); + m_LastImageName = name; + m_pLastImage = pObj->GetImage(); + if (!m_pObjectHolder->HasImageMask()) + m_pObjectHolder->SetHasImageMask(m_pLastImage->IsMask()); + } else if (type == "Form") { + AddForm(pXObject); + } +} + +void CPDF_StreamContentParser::AddForm(CPDF_Stream* pStream) { + std::unique_ptr<CPDF_FormObject> pFormObj(new CPDF_FormObject); + pFormObj->m_pForm.reset( + new CPDF_Form(m_pDocument, m_pPageResources, pStream, m_pResources)); + pFormObj->m_FormMatrix = m_pCurStates->m_CTM; + pFormObj->m_FormMatrix.Concat(m_mtContentToUser); + CPDF_AllStates status; + status.m_GeneralState = m_pCurStates->m_GeneralState; + status.m_GraphState = m_pCurStates->m_GraphState; + status.m_ColorState = m_pCurStates->m_ColorState; + status.m_TextState = m_pCurStates->m_TextState; + pFormObj->m_pForm->ParseContent(&status, nullptr, nullptr, m_Level + 1); + if (!m_pObjectHolder->BackgroundAlphaNeeded() && + pFormObj->m_pForm->BackgroundAlphaNeeded()) { + m_pObjectHolder->SetBackgroundAlphaNeeded(TRUE); + } + pFormObj->CalcBoundingBox(); + SetGraphicStates(pFormObj.get(), true, true, true); + m_pObjectHolder->GetPageObjectList()->push_back(std::move(pFormObj)); +} + +CPDF_ImageObject* CPDF_StreamContentParser::AddImage(UniqueStream pStream) { + if (!pStream) + return nullptr; + + auto pImageObj = pdfium::MakeUnique<CPDF_ImageObject>(); + pImageObj->SetOwnedImage( + pdfium::MakeUnique<CPDF_Image>(m_pDocument, pStream.release(), true)); + + return AddImageObject(std::move(pImageObj)); +} + +CPDF_ImageObject* CPDF_StreamContentParser::AddImage(uint32_t streamObjNum) { + CPDF_Stream* pStream = ToStream(m_pDocument->GetIndirectObject(streamObjNum)); + if (!pStream) + return nullptr; + + auto pImageObj = pdfium::MakeUnique<CPDF_ImageObject>(); + pImageObj->SetUnownedImage(m_pDocument->LoadImageF(pStream)); + return AddImageObject(std::move(pImageObj)); +} + +CPDF_ImageObject* CPDF_StreamContentParser::AddImage(CPDF_Image* pImage) { + if (!pImage) + return nullptr; + + auto pImageObj = pdfium::MakeUnique<CPDF_ImageObject>(); + pImageObj->SetUnownedImage( + m_pDocument->GetPageData()->GetImage(pImage->GetStream())); + + return AddImageObject(std::move(pImageObj)); +} + +CPDF_ImageObject* CPDF_StreamContentParser::AddImageObject( + std::unique_ptr<CPDF_ImageObject> pImageObj) { + SetGraphicStates(pImageObj.get(), pImageObj->GetImage()->IsMask(), false, + false); + + CFX_Matrix ImageMatrix = m_pCurStates->m_CTM; + ImageMatrix.Concat(m_mtContentToUser); + pImageObj->m_Matrix = ImageMatrix; + pImageObj->CalcBoundingBox(); + + CPDF_ImageObject* pRet = pImageObj.get(); + m_pObjectHolder->GetPageObjectList()->push_back(std::move(pImageObj)); + return pRet; +} + +void CPDF_StreamContentParser::Handle_MarkPlace_Dictionary() {} + +void CPDF_StreamContentParser::Handle_EndImage() {} + +void CPDF_StreamContentParser::Handle_EndMarkedContent() { + if (m_CurContentMark) + m_CurContentMark.DeleteLastMark(); +} + +void CPDF_StreamContentParser::Handle_EndText() { + if (m_ClipTextList.empty()) + return; + + if (TextRenderingModeIsClipMode(m_pCurStates->m_TextState.GetTextMode())) + m_pCurStates->m_ClipPath.AppendTexts(&m_ClipTextList); + + m_ClipTextList.clear(); +} + +void CPDF_StreamContentParser::Handle_FillPath() { + AddPathObject(FXFILL_WINDING, false); +} + +void CPDF_StreamContentParser::Handle_FillPathOld() { + AddPathObject(FXFILL_WINDING, false); +} + +void CPDF_StreamContentParser::Handle_EOFillPath() { + AddPathObject(FXFILL_ALTERNATE, false); +} + +void CPDF_StreamContentParser::Handle_SetGray_Fill() { + FX_FLOAT value = GetNumber(0); + CPDF_ColorSpace* pCS = CPDF_ColorSpace::GetStockCS(PDFCS_DEVICEGRAY); + m_pCurStates->m_ColorState.SetFillColor(pCS, &value, 1); +} + +void CPDF_StreamContentParser::Handle_SetGray_Stroke() { + FX_FLOAT value = GetNumber(0); + CPDF_ColorSpace* pCS = CPDF_ColorSpace::GetStockCS(PDFCS_DEVICEGRAY); + m_pCurStates->m_ColorState.SetStrokeColor(pCS, &value, 1); +} + +void CPDF_StreamContentParser::Handle_SetExtendGraphState() { + CFX_ByteString name = GetString(0); + CPDF_Dictionary* pGS = ToDictionary(FindResourceObj("ExtGState", name)); + if (!pGS) { + m_bResourceMissing = true; + return; + } + m_pCurStates->ProcessExtGS(pGS, this); +} + +void CPDF_StreamContentParser::Handle_ClosePath() { + if (m_PathPointCount == 0) { + return; + } + if (m_PathStartX != m_PathCurrentX || m_PathStartY != m_PathCurrentY) { + AddPathPoint(m_PathStartX, m_PathStartY, FXPT_LINETO | FXPT_CLOSEFIGURE); + } else if (m_pPathPoints[m_PathPointCount - 1].m_Flag != FXPT_MOVETO) { + m_pPathPoints[m_PathPointCount - 1].m_Flag |= FXPT_CLOSEFIGURE; + } +} + +void CPDF_StreamContentParser::Handle_SetFlat() { + m_pCurStates->m_GeneralState.SetFlatness(GetNumber(0)); +} + +void CPDF_StreamContentParser::Handle_BeginImageData() {} + +void CPDF_StreamContentParser::Handle_SetLineJoin() { + m_pCurStates->m_GraphState.SetLineJoin( + static_cast<CFX_GraphStateData::LineJoin>(GetInteger(0))); +} + +void CPDF_StreamContentParser::Handle_SetLineCap() { + m_pCurStates->m_GraphState.SetLineCap( + static_cast<CFX_GraphStateData::LineCap>(GetInteger(0))); +} + +void CPDF_StreamContentParser::Handle_SetCMYKColor_Fill() { + if (m_ParamCount != 4) + return; + + FX_FLOAT values[4]; + for (int i = 0; i < 4; i++) { + values[i] = GetNumber(3 - i); + } + CPDF_ColorSpace* pCS = CPDF_ColorSpace::GetStockCS(PDFCS_DEVICECMYK); + m_pCurStates->m_ColorState.SetFillColor(pCS, values, 4); +} + +void CPDF_StreamContentParser::Handle_SetCMYKColor_Stroke() { + if (m_ParamCount != 4) + return; + + FX_FLOAT values[4]; + for (int i = 0; i < 4; i++) { + values[i] = GetNumber(3 - i); + } + CPDF_ColorSpace* pCS = CPDF_ColorSpace::GetStockCS(PDFCS_DEVICECMYK); + m_pCurStates->m_ColorState.SetStrokeColor(pCS, values, 4); +} + +void CPDF_StreamContentParser::Handle_LineTo() { + if (m_ParamCount != 2) + return; + + AddPathPoint(GetNumber(1), GetNumber(0), FXPT_LINETO); +} + +void CPDF_StreamContentParser::Handle_MoveTo() { + if (m_ParamCount != 2) + return; + + AddPathPoint(GetNumber(1), GetNumber(0), FXPT_MOVETO); + ParsePathObject(); +} + +void CPDF_StreamContentParser::Handle_SetMiterLimit() { + m_pCurStates->m_GraphState.SetMiterLimit(GetNumber(0)); +} + +void CPDF_StreamContentParser::Handle_MarkPlace() {} + +void CPDF_StreamContentParser::Handle_EndPath() { + AddPathObject(0, false); +} + +void CPDF_StreamContentParser::Handle_SaveGraphState() { + std::unique_ptr<CPDF_AllStates> pStates(new CPDF_AllStates); + pStates->Copy(*m_pCurStates); + m_StateStack.push_back(std::move(pStates)); +} + +void CPDF_StreamContentParser::Handle_RestoreGraphState() { + if (m_StateStack.empty()) + return; + std::unique_ptr<CPDF_AllStates> pStates = std::move(m_StateStack.back()); + m_StateStack.pop_back(); + m_pCurStates->Copy(*pStates); +} + +void CPDF_StreamContentParser::Handle_Rectangle() { + FX_FLOAT x = GetNumber(3), y = GetNumber(2); + FX_FLOAT w = GetNumber(1), h = GetNumber(0); + AddPathRect(x, y, w, h); +} + +void CPDF_StreamContentParser::AddPathRect(FX_FLOAT x, + FX_FLOAT y, + FX_FLOAT w, + FX_FLOAT h) { + AddPathPoint(x, y, FXPT_MOVETO); + AddPathPoint(x + w, y, FXPT_LINETO); + AddPathPoint(x + w, y + h, FXPT_LINETO); + AddPathPoint(x, y + h, FXPT_LINETO); + AddPathPoint(x, y, FXPT_LINETO | FXPT_CLOSEFIGURE); +} + +void CPDF_StreamContentParser::Handle_SetRGBColor_Fill() { + if (m_ParamCount != 3) + return; + + FX_FLOAT values[3]; + for (int i = 0; i < 3; i++) { + values[i] = GetNumber(2 - i); + } + CPDF_ColorSpace* pCS = CPDF_ColorSpace::GetStockCS(PDFCS_DEVICERGB); + m_pCurStates->m_ColorState.SetFillColor(pCS, values, 3); +} + +void CPDF_StreamContentParser::Handle_SetRGBColor_Stroke() { + if (m_ParamCount != 3) + return; + + FX_FLOAT values[3]; + for (int i = 0; i < 3; i++) { + values[i] = GetNumber(2 - i); + } + CPDF_ColorSpace* pCS = CPDF_ColorSpace::GetStockCS(PDFCS_DEVICERGB); + m_pCurStates->m_ColorState.SetStrokeColor(pCS, values, 3); +} + +void CPDF_StreamContentParser::Handle_SetRenderIntent() {} + +void CPDF_StreamContentParser::Handle_CloseStrokePath() { + Handle_ClosePath(); + AddPathObject(0, true); +} + +void CPDF_StreamContentParser::Handle_StrokePath() { + AddPathObject(0, true); +} + +void CPDF_StreamContentParser::Handle_SetColor_Fill() { + FX_FLOAT values[4]; + int nargs = m_ParamCount; + if (nargs > 4) { + nargs = 4; + } + for (int i = 0; i < nargs; i++) { + values[i] = GetNumber(nargs - i - 1); + } + m_pCurStates->m_ColorState.SetFillColor(nullptr, values, nargs); +} + +void CPDF_StreamContentParser::Handle_SetColor_Stroke() { + FX_FLOAT values[4]; + int nargs = m_ParamCount; + if (nargs > 4) { + nargs = 4; + } + for (int i = 0; i < nargs; i++) { + values[i] = GetNumber(nargs - i - 1); + } + m_pCurStates->m_ColorState.SetStrokeColor(nullptr, values, nargs); +} + +void CPDF_StreamContentParser::Handle_SetColorPS_Fill() { + CPDF_Object* pLastParam = GetObject(0); + if (!pLastParam) { + return; + } + uint32_t nargs = m_ParamCount; + uint32_t nvalues = nargs; + if (pLastParam->IsName()) + nvalues--; + FX_FLOAT* values = nullptr; + if (nvalues) { + values = FX_Alloc(FX_FLOAT, nvalues); + for (uint32_t i = 0; i < nvalues; i++) { + values[i] = GetNumber(nargs - i - 1); + } + } + if (nvalues != nargs) { + CPDF_Pattern* pPattern = FindPattern(GetString(0), false); + if (pPattern) { + m_pCurStates->m_ColorState.SetFillPattern(pPattern, values, nvalues); + } + } else { + m_pCurStates->m_ColorState.SetFillColor(nullptr, values, nvalues); + } + FX_Free(values); +} + +void CPDF_StreamContentParser::Handle_SetColorPS_Stroke() { + CPDF_Object* pLastParam = GetObject(0); + if (!pLastParam) { + return; + } + int nargs = m_ParamCount; + int nvalues = nargs; + if (pLastParam->IsName()) + nvalues--; + + FX_FLOAT* values = nullptr; + if (nvalues) { + values = FX_Alloc(FX_FLOAT, nvalues); + for (int i = 0; i < nvalues; i++) { + values[i] = GetNumber(nargs - i - 1); + } + } + if (nvalues != nargs) { + CPDF_Pattern* pPattern = FindPattern(GetString(0), false); + if (pPattern) { + m_pCurStates->m_ColorState.SetStrokePattern(pPattern, values, nvalues); + } + } else { + m_pCurStates->m_ColorState.SetStrokeColor(nullptr, values, nvalues); + } + FX_Free(values); +} + +void CPDF_StreamContentParser::Handle_ShadeFill() { + CPDF_Pattern* pPattern = FindPattern(GetString(0), true); + if (!pPattern) + return; + + CPDF_ShadingPattern* pShading = pPattern->AsShadingPattern(); + if (!pShading) + return; + + if (!pShading->IsShadingObject() || !pShading->Load()) + return; + + std::unique_ptr<CPDF_ShadingObject> pObj(new CPDF_ShadingObject); + pObj->m_pShading = pShading; + SetGraphicStates(pObj.get(), false, false, false); + pObj->m_Matrix = m_pCurStates->m_CTM; + pObj->m_Matrix.Concat(m_mtContentToUser); + CFX_FloatRect bbox = + pObj->m_ClipPath ? pObj->m_ClipPath.GetClipBox() : m_BBox; + if (pShading->IsMeshShading()) + bbox.Intersect(GetShadingBBox(pShading, pObj->m_Matrix)); + pObj->m_Left = bbox.left; + pObj->m_Right = bbox.right; + pObj->m_Top = bbox.top; + pObj->m_Bottom = bbox.bottom; + m_pObjectHolder->GetPageObjectList()->push_back(std::move(pObj)); +} + +void CPDF_StreamContentParser::Handle_SetCharSpace() { + m_pCurStates->m_TextState.SetCharSpace(GetNumber(0)); +} + +void CPDF_StreamContentParser::Handle_MoveTextPoint() { + m_pCurStates->m_TextLineX += GetNumber(1); + m_pCurStates->m_TextLineY += GetNumber(0); + m_pCurStates->m_TextX = m_pCurStates->m_TextLineX; + m_pCurStates->m_TextY = m_pCurStates->m_TextLineY; +} + +void CPDF_StreamContentParser::Handle_MoveTextPoint_SetLeading() { + Handle_MoveTextPoint(); + m_pCurStates->m_TextLeading = -GetNumber(0); +} + +void CPDF_StreamContentParser::Handle_SetFont() { + FX_FLOAT fs = GetNumber(0); + if (fs == 0) { + fs = m_DefFontSize; + } + m_pCurStates->m_TextState.SetFontSize(fs); + CPDF_Font* pFont = FindFont(GetString(1)); + if (pFont) { + m_pCurStates->m_TextState.SetFont(pFont); + } +} + +CPDF_Object* CPDF_StreamContentParser::FindResourceObj( + const CFX_ByteString& type, + const CFX_ByteString& name) { + if (!m_pResources) + return nullptr; + CPDF_Dictionary* pDict = m_pResources->GetDictFor(type); + if (pDict) + return pDict->GetDirectObjectFor(name); + if (m_pResources == m_pPageResources || !m_pPageResources) + return nullptr; + + CPDF_Dictionary* pPageDict = m_pPageResources->GetDictFor(type); + return pPageDict ? pPageDict->GetDirectObjectFor(name) : nullptr; +} + +CPDF_Font* CPDF_StreamContentParser::FindFont(const CFX_ByteString& name) { + CPDF_Dictionary* pFontDict = ToDictionary(FindResourceObj("Font", name)); + if (!pFontDict) { + m_bResourceMissing = true; + return CPDF_Font::GetStockFont(m_pDocument, "Helvetica"); + } + + CPDF_Font* pFont = m_pDocument->LoadFont(pFontDict); + if (pFont && pFont->IsType3Font()) { + pFont->AsType3Font()->SetPageResources(m_pResources); + pFont->AsType3Font()->CheckType3FontMetrics(); + } + return pFont; +} + +CPDF_ColorSpace* CPDF_StreamContentParser::FindColorSpace( + const CFX_ByteString& name) { + if (name == "Pattern") { + return CPDF_ColorSpace::GetStockCS(PDFCS_PATTERN); + } + if (name == "DeviceGray" || name == "DeviceCMYK" || name == "DeviceRGB") { + CFX_ByteString defname = "Default"; + defname += name.Mid(7); + CPDF_Object* pDefObj = FindResourceObj("ColorSpace", defname); + if (!pDefObj) { + if (name == "DeviceGray") { + return CPDF_ColorSpace::GetStockCS(PDFCS_DEVICEGRAY); + } + if (name == "DeviceRGB") { + return CPDF_ColorSpace::GetStockCS(PDFCS_DEVICERGB); + } + return CPDF_ColorSpace::GetStockCS(PDFCS_DEVICECMYK); + } + return m_pDocument->LoadColorSpace(pDefObj); + } + CPDF_Object* pCSObj = FindResourceObj("ColorSpace", name); + if (!pCSObj) { + m_bResourceMissing = true; + return nullptr; + } + return m_pDocument->LoadColorSpace(pCSObj); +} + +CPDF_Pattern* CPDF_StreamContentParser::FindPattern(const CFX_ByteString& name, + bool bShading) { + CPDF_Object* pPattern = + FindResourceObj(bShading ? "Shading" : "Pattern", name); + if (!pPattern || (!pPattern->IsDictionary() && !pPattern->IsStream())) { + m_bResourceMissing = true; + return nullptr; + } + return m_pDocument->LoadPattern(pPattern, bShading, + m_pCurStates->m_ParentMatrix); +} + +void CPDF_StreamContentParser::ConvertTextSpace(FX_FLOAT& x, FX_FLOAT& y) { + m_pCurStates->m_TextMatrix.Transform(x, y, x, y); + ConvertUserSpace(x, y); +} + +void CPDF_StreamContentParser::ConvertUserSpace(FX_FLOAT& x, FX_FLOAT& y) { + m_pCurStates->m_CTM.Transform(x, y, x, y); + m_mtContentToUser.Transform(x, y, x, y); +} + +void CPDF_StreamContentParser::AddTextObject(CFX_ByteString* pStrs, + FX_FLOAT fInitKerning, + FX_FLOAT* pKerning, + int nsegs) { + CPDF_Font* pFont = m_pCurStates->m_TextState.GetFont(); + if (!pFont) { + return; + } + if (fInitKerning != 0) { + if (!pFont->IsVertWriting()) { + m_pCurStates->m_TextX -= + (fInitKerning * m_pCurStates->m_TextState.GetFontSize()) / 1000; + } else { + m_pCurStates->m_TextY -= + (fInitKerning * m_pCurStates->m_TextState.GetFontSize()) / 1000; + } + } + if (nsegs == 0) { + return; + } + const TextRenderingMode text_mode = + pFont->IsType3Font() ? TextRenderingMode::MODE_FILL + : m_pCurStates->m_TextState.GetTextMode(); + { + std::unique_ptr<CPDF_TextObject> pText(new CPDF_TextObject); + m_pLastTextObject = pText.get(); + SetGraphicStates(m_pLastTextObject, true, true, true); + if (TextRenderingModeIsStrokeMode(text_mode)) { + FX_FLOAT* pCTM = pText->m_TextState.GetMutableCTM(); + pCTM[0] = m_pCurStates->m_CTM.a; + pCTM[1] = m_pCurStates->m_CTM.c; + pCTM[2] = m_pCurStates->m_CTM.b; + pCTM[3] = m_pCurStates->m_CTM.d; + } + pText->SetSegments(pStrs, pKerning, nsegs); + pText->m_PosX = m_pCurStates->m_TextX; + pText->m_PosY = m_pCurStates->m_TextY + m_pCurStates->m_TextRise; + ConvertTextSpace(pText->m_PosX, pText->m_PosY); + FX_FLOAT x_advance; + FX_FLOAT y_advance; + pText->CalcPositionData(&x_advance, &y_advance, + m_pCurStates->m_TextHorzScale); + m_pCurStates->m_TextX += x_advance; + m_pCurStates->m_TextY += y_advance; + if (TextRenderingModeIsClipMode(text_mode)) { + m_ClipTextList.push_back( + std::unique_ptr<CPDF_TextObject>(pText->Clone())); + } + m_pObjectHolder->GetPageObjectList()->push_back(std::move(pText)); + } + if (pKerning && pKerning[nsegs - 1] != 0) { + if (!pFont->IsVertWriting()) { + m_pCurStates->m_TextX -= + (pKerning[nsegs - 1] * m_pCurStates->m_TextState.GetFontSize()) / + 1000; + } else { + m_pCurStates->m_TextY -= + (pKerning[nsegs - 1] * m_pCurStates->m_TextState.GetFontSize()) / + 1000; + } + } +} + +void CPDF_StreamContentParser::Handle_ShowText() { + CFX_ByteString str = GetString(0); + if (str.IsEmpty()) { + return; + } + AddTextObject(&str, 0, nullptr, 1); +} + +void CPDF_StreamContentParser::Handle_ShowText_Positioning() { + CPDF_Array* pArray = ToArray(GetObject(0)); + if (!pArray) + return; + + size_t n = pArray->GetCount(); + size_t nsegs = 0; + for (size_t i = 0; i < n; i++) { + if (pArray->GetDirectObjectAt(i)->IsString()) + nsegs++; + } + if (nsegs == 0) { + for (size_t i = 0; i < n; i++) { + m_pCurStates->m_TextX -= + (pArray->GetNumberAt(i) * m_pCurStates->m_TextState.GetFontSize()) / + 1000; + } + return; + } + CFX_ByteString* pStrs = new CFX_ByteString[nsegs]; + FX_FLOAT* pKerning = FX_Alloc(FX_FLOAT, nsegs); + size_t iSegment = 0; + FX_FLOAT fInitKerning = 0; + for (size_t i = 0; i < n; i++) { + CPDF_Object* pObj = pArray->GetDirectObjectAt(i); + if (pObj->IsString()) { + CFX_ByteString str = pObj->GetString(); + if (str.IsEmpty()) { + continue; + } + pStrs[iSegment] = str; + pKerning[iSegment++] = 0; + } else { + FX_FLOAT num = pObj ? pObj->GetNumber() : 0; + if (iSegment == 0) { + fInitKerning += num; + } else { + pKerning[iSegment - 1] += num; + } + } + } + AddTextObject(pStrs, fInitKerning, pKerning, iSegment); + delete[] pStrs; + FX_Free(pKerning); +} + +void CPDF_StreamContentParser::Handle_SetTextLeading() { + m_pCurStates->m_TextLeading = GetNumber(0); +} + +void CPDF_StreamContentParser::Handle_SetTextMatrix() { + m_pCurStates->m_TextMatrix.Set(GetNumber(5), GetNumber(4), GetNumber(3), + GetNumber(2), GetNumber(1), GetNumber(0)); + OnChangeTextMatrix(); + m_pCurStates->m_TextX = 0; + m_pCurStates->m_TextY = 0; + m_pCurStates->m_TextLineX = 0; + m_pCurStates->m_TextLineY = 0; +} + +void CPDF_StreamContentParser::OnChangeTextMatrix() { + CFX_Matrix text_matrix(m_pCurStates->m_TextHorzScale, 0.0f, 0.0f, 1.0f, 0.0f, + 0.0f); + text_matrix.Concat(m_pCurStates->m_TextMatrix); + text_matrix.Concat(m_pCurStates->m_CTM); + text_matrix.Concat(m_mtContentToUser); + FX_FLOAT* pTextMatrix = m_pCurStates->m_TextState.GetMutableMatrix(); + pTextMatrix[0] = text_matrix.a; + pTextMatrix[1] = text_matrix.c; + pTextMatrix[2] = text_matrix.b; + pTextMatrix[3] = text_matrix.d; +} + +void CPDF_StreamContentParser::Handle_SetTextRenderMode() { + TextRenderingMode mode; + if (SetTextRenderingModeFromInt(GetInteger(0), &mode)) + m_pCurStates->m_TextState.SetTextMode(mode); +} + +void CPDF_StreamContentParser::Handle_SetTextRise() { + m_pCurStates->m_TextRise = GetNumber(0); +} + +void CPDF_StreamContentParser::Handle_SetWordSpace() { + m_pCurStates->m_TextState.SetWordSpace(GetNumber(0)); +} + +void CPDF_StreamContentParser::Handle_SetHorzScale() { + if (m_ParamCount != 1) { + return; + } + m_pCurStates->m_TextHorzScale = GetNumber(0) / 100; + OnChangeTextMatrix(); +} + +void CPDF_StreamContentParser::Handle_MoveToNextLine() { + m_pCurStates->m_TextLineY -= m_pCurStates->m_TextLeading; + m_pCurStates->m_TextX = m_pCurStates->m_TextLineX; + m_pCurStates->m_TextY = m_pCurStates->m_TextLineY; +} + +void CPDF_StreamContentParser::Handle_CurveTo_23() { + AddPathPoint(m_PathCurrentX, m_PathCurrentY, FXPT_BEZIERTO); + AddPathPoint(GetNumber(3), GetNumber(2), FXPT_BEZIERTO); + AddPathPoint(GetNumber(1), GetNumber(0), FXPT_BEZIERTO); +} + +void CPDF_StreamContentParser::Handle_SetLineWidth() { + m_pCurStates->m_GraphState.SetLineWidth(GetNumber(0)); +} + +void CPDF_StreamContentParser::Handle_Clip() { + m_PathClipType = FXFILL_WINDING; +} + +void CPDF_StreamContentParser::Handle_EOClip() { + m_PathClipType = FXFILL_ALTERNATE; +} + +void CPDF_StreamContentParser::Handle_CurveTo_13() { + AddPathPoint(GetNumber(3), GetNumber(2), FXPT_BEZIERTO); + AddPathPoint(GetNumber(1), GetNumber(0), FXPT_BEZIERTO); + AddPathPoint(GetNumber(1), GetNumber(0), FXPT_BEZIERTO); +} + +void CPDF_StreamContentParser::Handle_NextLineShowText() { + Handle_MoveToNextLine(); + Handle_ShowText(); +} + +void CPDF_StreamContentParser::Handle_NextLineShowText_Space() { + m_pCurStates->m_TextState.SetWordSpace(GetNumber(2)); + m_pCurStates->m_TextState.SetCharSpace(GetNumber(1)); + Handle_NextLineShowText(); +} + +void CPDF_StreamContentParser::Handle_Invalid() {} + +void CPDF_StreamContentParser::AddPathPoint(FX_FLOAT x, FX_FLOAT y, int flag) { + m_PathCurrentX = x; + m_PathCurrentY = y; + if (flag == FXPT_MOVETO) { + m_PathStartX = x; + m_PathStartY = y; + if (m_PathPointCount && + m_pPathPoints[m_PathPointCount - 1].m_Flag == FXPT_MOVETO) { + m_pPathPoints[m_PathPointCount - 1].m_PointX = x; + m_pPathPoints[m_PathPointCount - 1].m_PointY = y; + return; + } + } else if (m_PathPointCount == 0) { + return; + } + m_PathPointCount++; + if (m_PathPointCount > m_PathAllocSize) { + int newsize = m_PathPointCount + 256; + FX_PATHPOINT* pNewPoints = FX_Alloc(FX_PATHPOINT, newsize); + if (m_PathAllocSize) { + FXSYS_memcpy(pNewPoints, m_pPathPoints, + m_PathAllocSize * sizeof(FX_PATHPOINT)); + FX_Free(m_pPathPoints); + } + m_pPathPoints = pNewPoints; + m_PathAllocSize = newsize; + } + m_pPathPoints[m_PathPointCount - 1].m_Flag = flag; + m_pPathPoints[m_PathPointCount - 1].m_PointX = x; + m_pPathPoints[m_PathPointCount - 1].m_PointY = y; +} + +void CPDF_StreamContentParser::AddPathObject(int FillType, bool bStroke) { + int PathPointCount = m_PathPointCount; + uint8_t PathClipType = m_PathClipType; + m_PathPointCount = 0; + m_PathClipType = 0; + if (PathPointCount <= 1) { + if (PathPointCount && PathClipType) { + CPDF_Path path; + path.AppendRect(0, 0, 0, 0); + m_pCurStates->m_ClipPath.AppendPath(path, FXFILL_WINDING, TRUE); + } + return; + } + if (PathPointCount && + m_pPathPoints[PathPointCount - 1].m_Flag == FXPT_MOVETO) { + PathPointCount--; + } + CPDF_Path Path; + Path.SetPointCount(PathPointCount); + FXSYS_memcpy(Path.GetMutablePoints(), m_pPathPoints, + sizeof(FX_PATHPOINT) * PathPointCount); + CFX_Matrix matrix = m_pCurStates->m_CTM; + matrix.Concat(m_mtContentToUser); + if (bStroke || FillType) { + std::unique_ptr<CPDF_PathObject> pPathObj(new CPDF_PathObject); + pPathObj->m_bStroke = bStroke; + pPathObj->m_FillType = FillType; + pPathObj->m_Path = Path; + pPathObj->m_Matrix = matrix; + SetGraphicStates(pPathObj.get(), true, false, true); + pPathObj->CalcBoundingBox(); + m_pObjectHolder->GetPageObjectList()->push_back(std::move(pPathObj)); + } + if (PathClipType) { + if (!matrix.IsIdentity()) { + Path.Transform(&matrix); + matrix.SetIdentity(); + } + m_pCurStates->m_ClipPath.AppendPath(Path, PathClipType, TRUE); + } +} + +uint32_t CPDF_StreamContentParser::Parse(const uint8_t* pData, + uint32_t dwSize, + uint32_t max_cost) { + if (m_Level > kMaxFormLevel) + return dwSize; + + uint32_t InitObjCount = m_pObjectHolder->GetPageObjectList()->size(); + CPDF_StreamParser syntax(pData, dwSize, m_pDocument->GetByteStringPool()); + CPDF_StreamParserAutoClearer auto_clearer(&m_pSyntax, &syntax); + while (1) { + uint32_t cost = m_pObjectHolder->GetPageObjectList()->size() - InitObjCount; + if (max_cost && cost >= max_cost) { + break; + } + switch (syntax.ParseNextElement()) { + case CPDF_StreamParser::EndOfData: + return m_pSyntax->GetPos(); + case CPDF_StreamParser::Keyword: + OnOperator((char*)syntax.GetWordBuf()); + ClearAllParams(); + break; + case CPDF_StreamParser::Number: + AddNumberParam((char*)syntax.GetWordBuf(), syntax.GetWordSize()); + break; + case CPDF_StreamParser::Name: + AddNameParam((const FX_CHAR*)syntax.GetWordBuf() + 1, + syntax.GetWordSize() - 1); + break; + default: + AddObjectParam(syntax.GetObject()); + } + } + return m_pSyntax->GetPos(); +} + +void CPDF_StreamContentParser::ParsePathObject() { + FX_FLOAT params[6] = {}; + int nParams = 0; + int last_pos = m_pSyntax->GetPos(); + while (1) { + CPDF_StreamParser::SyntaxType type = m_pSyntax->ParseNextElement(); + FX_BOOL bProcessed = TRUE; + switch (type) { + case CPDF_StreamParser::EndOfData: + return; + case CPDF_StreamParser::Keyword: { + int len = m_pSyntax->GetWordSize(); + if (len == 1) { + switch (m_pSyntax->GetWordBuf()[0]) { + case kPathOperatorSubpath: + AddPathPoint(params[0], params[1], FXPT_MOVETO); + nParams = 0; + break; + case kPathOperatorLine: + AddPathPoint(params[0], params[1], FXPT_LINETO); + nParams = 0; + break; + case kPathOperatorCubicBezier1: + AddPathPoint(params[0], params[1], FXPT_BEZIERTO); + AddPathPoint(params[2], params[3], FXPT_BEZIERTO); + AddPathPoint(params[4], params[5], FXPT_BEZIERTO); + nParams = 0; + break; + case kPathOperatorCubicBezier2: + AddPathPoint(m_PathCurrentX, m_PathCurrentY, FXPT_BEZIERTO); + AddPathPoint(params[0], params[1], FXPT_BEZIERTO); + AddPathPoint(params[2], params[3], FXPT_BEZIERTO); + nParams = 0; + break; + case kPathOperatorCubicBezier3: + AddPathPoint(params[0], params[1], FXPT_BEZIERTO); + AddPathPoint(params[2], params[3], FXPT_BEZIERTO); + AddPathPoint(params[2], params[3], FXPT_BEZIERTO); + nParams = 0; + break; + case kPathOperatorClosePath: + Handle_ClosePath(); + nParams = 0; + break; + default: + bProcessed = FALSE; + break; + } + } else if (len == 2) { + if (m_pSyntax->GetWordBuf()[0] == kPathOperatorRectangle[0] && + m_pSyntax->GetWordBuf()[1] == kPathOperatorRectangle[1]) { + AddPathRect(params[0], params[1], params[2], params[3]); + nParams = 0; + } else { + bProcessed = FALSE; + } + } else { + bProcessed = FALSE; + } + if (bProcessed) { + last_pos = m_pSyntax->GetPos(); + } + break; + } + case CPDF_StreamParser::Number: { + if (nParams == 6) + break; + + int value; + bool bInteger = FX_atonum( + CFX_ByteStringC(m_pSyntax->GetWordBuf(), m_pSyntax->GetWordSize()), + &value); + params[nParams++] = bInteger ? (FX_FLOAT)value : *(FX_FLOAT*)&value; + break; + } + default: + bProcessed = FALSE; + } + if (!bProcessed) { + m_pSyntax->SetPos(last_pos); + return; + } + } +} diff --git a/core/fpdfapi/page/cpdf_streamcontentparser.h b/core/fpdfapi/page/cpdf_streamcontentparser.h new file mode 100644 index 0000000000..58008da96a --- /dev/null +++ b/core/fpdfapi/page/cpdf_streamcontentparser.h @@ -0,0 +1,225 @@ +// 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 + +#ifndef CORE_FPDFAPI_PAGE_CPDF_STREAMCONTENTPARSER_H_ +#define CORE_FPDFAPI_PAGE_CPDF_STREAMCONTENTPARSER_H_ + +#include <memory> +#include <unordered_map> +#include <vector> + +#include "core/fpdfapi/page/cpdf_contentmark.h" +#include "core/fpdfapi/parser/cpdf_stream.h" +#include "core/fxcrt/fx_string.h" +#include "core/fxge/cfx_pathdata.h" + +class CPDF_AllStates; +class CPDF_Dictionary; +class CPDF_Document; +class CPDF_Font; +class CPDF_Image; +class CPDF_ImageObject; +class CPDF_PageObject; +class CPDF_PageObjectHolder; +class CPDF_StreamParser; +class CPDF_TextObject; +class CPDF_ColorSpace; +class CPDF_Pattern; + +class CPDF_StreamContentParser { + public: + CPDF_StreamContentParser(CPDF_Document* pDoc, + CPDF_Dictionary* pPageResources, + CPDF_Dictionary* pParentResources, + const CFX_Matrix* pmtContentToUser, + CPDF_PageObjectHolder* pObjectHolder, + CPDF_Dictionary* pResources, + CFX_FloatRect* pBBox, + CPDF_AllStates* pAllStates, + int level); + ~CPDF_StreamContentParser(); + + uint32_t Parse(const uint8_t* pData, uint32_t dwSize, uint32_t max_cost); + CPDF_PageObjectHolder* GetPageObjectHolder() const { return m_pObjectHolder; } + CPDF_AllStates* GetCurStates() const { return m_pCurStates.get(); } + bool IsColored() const { return m_bColored; } + const FX_FLOAT* GetType3Data() const { return m_Type3Data; } + CPDF_Font* FindFont(const CFX_ByteString& name); + + private: + struct ContentParam { + enum Type { OBJECT = 0, NUMBER, NAME }; + Type m_Type; + union { + struct { + bool m_bInteger; + union { + int m_Integer; + FX_FLOAT m_Float; + }; + } m_Number; + CPDF_Object* m_pObject; + struct { + int m_Len; + char m_Buffer[32]; + } m_Name; + }; + }; + + static const int kParamBufSize = 16; + + using OpCodes = + std::unordered_map<uint32_t, void (CPDF_StreamContentParser::*)()>; + static OpCodes InitializeOpCodes(); + + void AddNumberParam(const FX_CHAR* str, int len); + void AddObjectParam(CPDF_Object* pObj); + void AddNameParam(const FX_CHAR* name, int size); + int GetNextParamPos(); + void ClearAllParams(); + CPDF_Object* GetObject(uint32_t index); + CFX_ByteString GetString(uint32_t index); + FX_FLOAT GetNumber(uint32_t index); + int GetInteger(uint32_t index) { return (int32_t)(GetNumber(index)); } + void OnOperator(const FX_CHAR* op); + void AddTextObject(CFX_ByteString* pText, + FX_FLOAT fInitKerning, + FX_FLOAT* pKerning, + int count); + + void ConvertUserSpace(FX_FLOAT& x, FX_FLOAT& y); + void ConvertTextSpace(FX_FLOAT& x, FX_FLOAT& y); + void OnChangeTextMatrix(); + void ParsePathObject(); + void AddPathPoint(FX_FLOAT x, FX_FLOAT y, int flag); + void AddPathRect(FX_FLOAT x, FX_FLOAT y, FX_FLOAT w, FX_FLOAT h); + void AddPathObject(int FillType, bool bStroke); + CPDF_ImageObject* AddImage(UniqueStream pStream); + CPDF_ImageObject* AddImage(uint32_t streamObjNum); + CPDF_ImageObject* AddImage(CPDF_Image* pImage); + + void AddForm(CPDF_Stream* pStream); + void SetGraphicStates(CPDF_PageObject* pObj, + bool bColor, + bool bText, + bool bGraph); + CPDF_ColorSpace* FindColorSpace(const CFX_ByteString& name); + CPDF_Pattern* FindPattern(const CFX_ByteString& name, bool bShading); + CPDF_Object* FindResourceObj(const CFX_ByteString& type, + const CFX_ByteString& name); + + // Takes ownership of |pImageObj|, returns unowned pointer to it. + CPDF_ImageObject* AddImageObject(std::unique_ptr<CPDF_ImageObject> pImageObj); + + void Handle_CloseFillStrokePath(); + void Handle_FillStrokePath(); + void Handle_CloseEOFillStrokePath(); + void Handle_EOFillStrokePath(); + void Handle_BeginMarkedContent_Dictionary(); + void Handle_BeginImage(); + void Handle_BeginMarkedContent(); + void Handle_BeginText(); + void Handle_CurveTo_123(); + void Handle_ConcatMatrix(); + void Handle_SetColorSpace_Fill(); + void Handle_SetColorSpace_Stroke(); + void Handle_SetDash(); + void Handle_SetCharWidth(); + void Handle_SetCachedDevice(); + void Handle_ExecuteXObject(); + void Handle_MarkPlace_Dictionary(); + void Handle_EndImage(); + void Handle_EndMarkedContent(); + void Handle_EndText(); + void Handle_FillPath(); + void Handle_FillPathOld(); + void Handle_EOFillPath(); + void Handle_SetGray_Fill(); + void Handle_SetGray_Stroke(); + void Handle_SetExtendGraphState(); + void Handle_ClosePath(); + void Handle_SetFlat(); + void Handle_BeginImageData(); + void Handle_SetLineJoin(); + void Handle_SetLineCap(); + void Handle_SetCMYKColor_Fill(); + void Handle_SetCMYKColor_Stroke(); + void Handle_LineTo(); + void Handle_MoveTo(); + void Handle_SetMiterLimit(); + void Handle_MarkPlace(); + void Handle_EndPath(); + void Handle_SaveGraphState(); + void Handle_RestoreGraphState(); + void Handle_Rectangle(); + void Handle_SetRGBColor_Fill(); + void Handle_SetRGBColor_Stroke(); + void Handle_SetRenderIntent(); + void Handle_CloseStrokePath(); + void Handle_StrokePath(); + void Handle_SetColor_Fill(); + void Handle_SetColor_Stroke(); + void Handle_SetColorPS_Fill(); + void Handle_SetColorPS_Stroke(); + void Handle_ShadeFill(); + void Handle_SetCharSpace(); + void Handle_MoveTextPoint(); + void Handle_MoveTextPoint_SetLeading(); + void Handle_SetFont(); + void Handle_ShowText(); + void Handle_ShowText_Positioning(); + void Handle_SetTextLeading(); + void Handle_SetTextMatrix(); + void Handle_SetTextRenderMode(); + void Handle_SetTextRise(); + void Handle_SetWordSpace(); + void Handle_SetHorzScale(); + void Handle_MoveToNextLine(); + void Handle_CurveTo_23(); + void Handle_SetLineWidth(); + void Handle_Clip(); + void Handle_EOClip(); + void Handle_CurveTo_13(); + void Handle_NextLineShowText(); + void Handle_NextLineShowText_Space(); + void Handle_Invalid(); + + CPDF_Document* const m_pDocument; + CPDF_Dictionary* m_pPageResources; + CPDF_Dictionary* m_pParentResources; + CPDF_Dictionary* m_pResources; + CPDF_PageObjectHolder* m_pObjectHolder; + int m_Level; + CFX_Matrix m_mtContentToUser; + CFX_FloatRect m_BBox; + ContentParam m_ParamBuf[kParamBufSize]; + uint32_t m_ParamStartPos; + uint32_t m_ParamCount; + CPDF_StreamParser* m_pSyntax; + std::unique_ptr<CPDF_AllStates> m_pCurStates; + CPDF_ContentMark m_CurContentMark; + std::vector<std::unique_ptr<CPDF_TextObject>> m_ClipTextList; + CPDF_TextObject* m_pLastTextObject; + FX_FLOAT m_DefFontSize; + FX_PATHPOINT* m_pPathPoints; + int m_PathPointCount; + int m_PathAllocSize; + FX_FLOAT m_PathStartX; + FX_FLOAT m_PathStartY; + FX_FLOAT m_PathCurrentX; + FX_FLOAT m_PathCurrentY; + uint8_t m_PathClipType; + CFX_ByteString m_LastImageName; + CPDF_Image* m_pLastImage; + CPDF_Dictionary* m_pLastImageDict; + CPDF_Dictionary* m_pLastCloneImageDict; + bool m_bColored; + FX_FLOAT m_Type3Data[6]; + bool m_bResourceMissing; + std::vector<std::unique_ptr<CPDF_AllStates>> m_StateStack; +}; + +#endif // CORE_FPDFAPI_PAGE_CPDF_STREAMCONTENTPARSER_H_ diff --git a/core/fpdfapi/page/fpdf_page_parser.cpp b/core/fpdfapi/page/fpdf_page_parser.cpp index 5fdca908c8..b6f0bc605c 100644 --- a/core/fpdfapi/page/fpdf_page_parser.cpp +++ b/core/fpdfapi/page/fpdf_page_parser.cpp @@ -41,20 +41,6 @@ namespace { -const int kSingleCoordinatePair = 1; -const int kTensorCoordinatePairs = 16; -const int kCoonsCoordinatePairs = 12; -const int kSingleColorPerPatch = 1; -const int kQuadColorsPerPatch = 4; - -const char kPathOperatorSubpath = 'm'; -const char kPathOperatorLine = 'l'; -const char kPathOperatorCubicBezier1 = 'c'; -const char kPathOperatorCubicBezier2 = 'v'; -const char kPathOperatorCubicBezier3 = 'y'; -const char kPathOperatorClosePath = 'h'; -const char kPathOperatorRectangle[] = "re"; - struct PDF_AbbrPair { const FX_CHAR* abbr; const FX_CHAR* full_name; @@ -81,19 +67,6 @@ struct AbbrReplacementOp { CFX_ByteStringC replacement; }; -class CPDF_StreamParserAutoClearer { - public: - CPDF_StreamParserAutoClearer(CPDF_StreamParser** scoped_variable, - CPDF_StreamParser* new_parser) - : scoped_variable_(scoped_variable) { - *scoped_variable_ = new_parser; - } - ~CPDF_StreamParserAutoClearer() { *scoped_variable_ = nullptr; } - - private: - CPDF_StreamParser** scoped_variable_; -}; - CFX_ByteStringC PDF_FindFullName(const PDF_AbbrPair* table, size_t count, const CFX_ByteStringC& abbr) { @@ -104,68 +77,6 @@ CFX_ByteStringC PDF_FindFullName(const PDF_AbbrPair* table, : CFX_ByteStringC(); } -CFX_FloatRect GetShadingBBox(CPDF_ShadingPattern* pShading, - const CFX_Matrix& matrix) { - ShadingType type = pShading->GetShadingType(); - CPDF_Stream* pStream = ToStream(pShading->GetShadingObject()); - CPDF_ColorSpace* pCS = pShading->GetCS(); - if (!pStream || !pCS) - return CFX_FloatRect(0, 0, 0, 0); - - CPDF_MeshStream stream(type, pShading->GetFuncs(), pStream, pCS); - if (!stream.Load()) - return CFX_FloatRect(0, 0, 0, 0); - - CFX_FloatRect rect; - bool bStarted = false; - bool bGouraud = type == kFreeFormGouraudTriangleMeshShading || - type == kLatticeFormGouraudTriangleMeshShading; - - int point_count = kSingleCoordinatePair; - if (type == kTensorProductPatchMeshShading) - point_count = kTensorCoordinatePairs; - else if (type == kCoonsPatchMeshShading) - point_count = kCoonsCoordinatePairs; - - int color_count = kSingleColorPerPatch; - if (type == kCoonsPatchMeshShading || type == kTensorProductPatchMeshShading) - color_count = kQuadColorsPerPatch; - - while (!stream.BitStream()->IsEOF()) { - uint32_t flag = 0; - if (type != kLatticeFormGouraudTriangleMeshShading) - flag = stream.GetFlag(); - - if (!bGouraud && flag) { - point_count -= 4; - color_count -= 2; - } - - for (int i = 0; i < point_count; i++) { - FX_FLOAT x; - FX_FLOAT y; - stream.GetCoords(x, y); - if (bStarted) { - rect.UpdateRect(x, y); - } else { - rect.InitRect(x, y); - bStarted = true; - } - } - FX_SAFE_UINT32 nBits = stream.Components(); - nBits *= stream.ComponentBits(); - nBits *= color_count; - if (!nBits.IsValid()) - break; - - stream.BitStream()->SkipBits(nBits.ValueOrDie()); - if (bGouraud) - stream.BitStream()->ByteAlign(); - } - rect.Transform(&matrix); - return rect; -} - } // namespace CFX_ByteStringC PDF_FindKeyAbbreviationForTesting(const CFX_ByteStringC& abbr) { @@ -179,1442 +90,6 @@ CFX_ByteStringC PDF_FindValueAbbreviationForTesting( FX_ArraySize(PDF_InlineValueAbbr), abbr); } -CPDF_StreamContentParser::CPDF_StreamContentParser( - CPDF_Document* pDocument, - CPDF_Dictionary* pPageResources, - CPDF_Dictionary* pParentResources, - const CFX_Matrix* pmtContentToUser, - CPDF_PageObjectHolder* pObjHolder, - CPDF_Dictionary* pResources, - CFX_FloatRect* pBBox, - CPDF_AllStates* pStates, - int level) - : m_pDocument(pDocument), - m_pPageResources(pPageResources), - m_pParentResources(pParentResources), - m_pResources(pResources), - m_pObjectHolder(pObjHolder), - m_Level(level), - m_ParamStartPos(0), - m_ParamCount(0), - m_pCurStates(new CPDF_AllStates), - m_pLastTextObject(nullptr), - m_DefFontSize(0), - m_pPathPoints(nullptr), - m_PathPointCount(0), - m_PathAllocSize(0), - m_PathCurrentX(0.0f), - m_PathCurrentY(0.0f), - m_PathClipType(0), - m_pLastImage(nullptr), - m_pLastImageDict(nullptr), - m_pLastCloneImageDict(nullptr), - m_bColored(false), - m_bResourceMissing(false) { - if (pmtContentToUser) - m_mtContentToUser = *pmtContentToUser; - if (!m_pResources) - m_pResources = m_pParentResources; - if (!m_pResources) - m_pResources = m_pPageResources; - if (pBBox) - m_BBox = *pBBox; - if (pStates) { - m_pCurStates->Copy(*pStates); - } else { - m_pCurStates->m_GeneralState.Emplace(); - m_pCurStates->m_GraphState.Emplace(); - m_pCurStates->m_TextState.Emplace(); - m_pCurStates->m_ColorState.Emplace(); - } - for (size_t i = 0; i < FX_ArraySize(m_Type3Data); ++i) { - m_Type3Data[i] = 0.0; - } -} - -CPDF_StreamContentParser::~CPDF_StreamContentParser() { - ClearAllParams(); - FX_Free(m_pPathPoints); - if (m_pLastImageDict) { - m_pLastImageDict->Release(); - } - if (m_pLastCloneImageDict) { - m_pLastCloneImageDict->Release(); - } -} - -int CPDF_StreamContentParser::GetNextParamPos() { - if (m_ParamCount == PARAM_BUF_SIZE) { - m_ParamStartPos++; - if (m_ParamStartPos == PARAM_BUF_SIZE) { - m_ParamStartPos = 0; - } - if (m_ParamBuf[m_ParamStartPos].m_Type == 0) { - if (CPDF_Object* pObject = m_ParamBuf[m_ParamStartPos].m_pObject) - pObject->Release(); - } - return m_ParamStartPos; - } - int index = m_ParamStartPos + m_ParamCount; - if (index >= PARAM_BUF_SIZE) { - index -= PARAM_BUF_SIZE; - } - m_ParamCount++; - return index; -} - -void CPDF_StreamContentParser::AddNameParam(const FX_CHAR* name, int len) { - CFX_ByteStringC bsName(name, len); - ContentParam& param = m_ParamBuf[GetNextParamPos()]; - if (len > 32) { - param.m_Type = ContentParam::OBJECT; - param.m_pObject = new CPDF_Name( - m_pDocument->GetByteStringPool()->Intern(PDF_NameDecode(bsName))); - } else { - param.m_Type = ContentParam::NAME; - if (bsName.Find('#') == -1) { - FXSYS_memcpy(param.m_Name.m_Buffer, name, len); - param.m_Name.m_Len = len; - } else { - CFX_ByteString str = PDF_NameDecode(bsName); - FXSYS_memcpy(param.m_Name.m_Buffer, str.c_str(), str.GetLength()); - param.m_Name.m_Len = str.GetLength(); - } - } -} - -void CPDF_StreamContentParser::AddNumberParam(const FX_CHAR* str, int len) { - ContentParam& param = m_ParamBuf[GetNextParamPos()]; - param.m_Type = ContentParam::NUMBER; - param.m_Number.m_bInteger = - FX_atonum(CFX_ByteStringC(str, len), ¶m.m_Number.m_Integer); -} - -void CPDF_StreamContentParser::AddObjectParam(CPDF_Object* pObj) { - ContentParam& param = m_ParamBuf[GetNextParamPos()]; - param.m_Type = ContentParam::OBJECT; - param.m_pObject = pObj; -} - -void CPDF_StreamContentParser::ClearAllParams() { - uint32_t index = m_ParamStartPos; - for (uint32_t i = 0; i < m_ParamCount; i++) { - if (m_ParamBuf[index].m_Type == 0) { - if (CPDF_Object* pObject = m_ParamBuf[index].m_pObject) - pObject->Release(); - } - index++; - if (index == PARAM_BUF_SIZE) { - index = 0; - } - } - m_ParamStartPos = 0; - m_ParamCount = 0; -} - -CPDF_Object* CPDF_StreamContentParser::GetObject(uint32_t index) { - if (index >= m_ParamCount) { - return nullptr; - } - int real_index = m_ParamStartPos + m_ParamCount - index - 1; - if (real_index >= PARAM_BUF_SIZE) { - real_index -= PARAM_BUF_SIZE; - } - ContentParam& param = m_ParamBuf[real_index]; - if (param.m_Type == ContentParam::NUMBER) { - CPDF_Number* pNumber = param.m_Number.m_bInteger - ? new CPDF_Number(param.m_Number.m_Integer) - : new CPDF_Number(param.m_Number.m_Float); - - param.m_Type = ContentParam::OBJECT; - param.m_pObject = pNumber; - return pNumber; - } - if (param.m_Type == ContentParam::NAME) { - CPDF_Name* pName = new CPDF_Name(m_pDocument->GetByteStringPool()->Intern( - CFX_ByteString(param.m_Name.m_Buffer, param.m_Name.m_Len))); - param.m_Type = ContentParam::OBJECT; - param.m_pObject = pName; - return pName; - } - if (param.m_Type == ContentParam::OBJECT) { - return param.m_pObject; - } - ASSERT(FALSE); - return nullptr; -} - -CFX_ByteString CPDF_StreamContentParser::GetString(uint32_t index) { - if (index >= m_ParamCount) { - return CFX_ByteString(); - } - int real_index = m_ParamStartPos + m_ParamCount - index - 1; - if (real_index >= PARAM_BUF_SIZE) { - real_index -= PARAM_BUF_SIZE; - } - ContentParam& param = m_ParamBuf[real_index]; - if (param.m_Type == ContentParam::NAME) { - return CFX_ByteString(param.m_Name.m_Buffer, param.m_Name.m_Len); - } - if (param.m_Type == 0 && param.m_pObject) { - return param.m_pObject->GetString(); - } - return CFX_ByteString(); -} - -FX_FLOAT CPDF_StreamContentParser::GetNumber(uint32_t index) { - if (index >= m_ParamCount) { - return 0; - } - int real_index = m_ParamStartPos + m_ParamCount - index - 1; - if (real_index >= PARAM_BUF_SIZE) { - real_index -= PARAM_BUF_SIZE; - } - ContentParam& param = m_ParamBuf[real_index]; - if (param.m_Type == ContentParam::NUMBER) { - return param.m_Number.m_bInteger ? (FX_FLOAT)param.m_Number.m_Integer - : param.m_Number.m_Float; - } - if (param.m_Type == 0 && param.m_pObject) { - return param.m_pObject->GetNumber(); - } - return 0; -} - -void CPDF_StreamContentParser::SetGraphicStates(CPDF_PageObject* pObj, - bool bColor, - bool bText, - bool bGraph) { - pObj->m_GeneralState = m_pCurStates->m_GeneralState; - pObj->m_ClipPath = m_pCurStates->m_ClipPath; - pObj->m_ContentMark = m_CurContentMark; - if (bColor) { - pObj->m_ColorState = m_pCurStates->m_ColorState; - } - if (bGraph) { - pObj->m_GraphState = m_pCurStates->m_GraphState; - } - if (bText) { - pObj->m_TextState = m_pCurStates->m_TextState; - } -} - -// static -CPDF_StreamContentParser::OpCodes -CPDF_StreamContentParser::InitializeOpCodes() { - return OpCodes({ - {FXBSTR_ID('"', 0, 0, 0), - &CPDF_StreamContentParser::Handle_NextLineShowText_Space}, - {FXBSTR_ID('\'', 0, 0, 0), - &CPDF_StreamContentParser::Handle_NextLineShowText}, - {FXBSTR_ID('B', 0, 0, 0), - &CPDF_StreamContentParser::Handle_FillStrokePath}, - {FXBSTR_ID('B', '*', 0, 0), - &CPDF_StreamContentParser::Handle_EOFillStrokePath}, - {FXBSTR_ID('B', 'D', 'C', 0), - &CPDF_StreamContentParser::Handle_BeginMarkedContent_Dictionary}, - {FXBSTR_ID('B', 'I', 0, 0), &CPDF_StreamContentParser::Handle_BeginImage}, - {FXBSTR_ID('B', 'M', 'C', 0), - &CPDF_StreamContentParser::Handle_BeginMarkedContent}, - {FXBSTR_ID('B', 'T', 0, 0), &CPDF_StreamContentParser::Handle_BeginText}, - {FXBSTR_ID('C', 'S', 0, 0), - &CPDF_StreamContentParser::Handle_SetColorSpace_Stroke}, - {FXBSTR_ID('D', 'P', 0, 0), - &CPDF_StreamContentParser::Handle_MarkPlace_Dictionary}, - {FXBSTR_ID('D', 'o', 0, 0), - &CPDF_StreamContentParser::Handle_ExecuteXObject}, - {FXBSTR_ID('E', 'I', 0, 0), &CPDF_StreamContentParser::Handle_EndImage}, - {FXBSTR_ID('E', 'M', 'C', 0), - &CPDF_StreamContentParser::Handle_EndMarkedContent}, - {FXBSTR_ID('E', 'T', 0, 0), &CPDF_StreamContentParser::Handle_EndText}, - {FXBSTR_ID('F', 0, 0, 0), &CPDF_StreamContentParser::Handle_FillPathOld}, - {FXBSTR_ID('G', 0, 0, 0), - &CPDF_StreamContentParser::Handle_SetGray_Stroke}, - {FXBSTR_ID('I', 'D', 0, 0), - &CPDF_StreamContentParser::Handle_BeginImageData}, - {FXBSTR_ID('J', 0, 0, 0), &CPDF_StreamContentParser::Handle_SetLineCap}, - {FXBSTR_ID('K', 0, 0, 0), - &CPDF_StreamContentParser::Handle_SetCMYKColor_Stroke}, - {FXBSTR_ID('M', 0, 0, 0), - &CPDF_StreamContentParser::Handle_SetMiterLimit}, - {FXBSTR_ID('M', 'P', 0, 0), &CPDF_StreamContentParser::Handle_MarkPlace}, - {FXBSTR_ID('Q', 0, 0, 0), - &CPDF_StreamContentParser::Handle_RestoreGraphState}, - {FXBSTR_ID('R', 'G', 0, 0), - &CPDF_StreamContentParser::Handle_SetRGBColor_Stroke}, - {FXBSTR_ID('S', 0, 0, 0), &CPDF_StreamContentParser::Handle_StrokePath}, - {FXBSTR_ID('S', 'C', 0, 0), - &CPDF_StreamContentParser::Handle_SetColor_Stroke}, - {FXBSTR_ID('S', 'C', 'N', 0), - &CPDF_StreamContentParser::Handle_SetColorPS_Stroke}, - {FXBSTR_ID('T', '*', 0, 0), - &CPDF_StreamContentParser::Handle_MoveToNextLine}, - {FXBSTR_ID('T', 'D', 0, 0), - &CPDF_StreamContentParser::Handle_MoveTextPoint_SetLeading}, - {FXBSTR_ID('T', 'J', 0, 0), - &CPDF_StreamContentParser::Handle_ShowText_Positioning}, - {FXBSTR_ID('T', 'L', 0, 0), - &CPDF_StreamContentParser::Handle_SetTextLeading}, - {FXBSTR_ID('T', 'c', 0, 0), - &CPDF_StreamContentParser::Handle_SetCharSpace}, - {FXBSTR_ID('T', 'd', 0, 0), - &CPDF_StreamContentParser::Handle_MoveTextPoint}, - {FXBSTR_ID('T', 'f', 0, 0), &CPDF_StreamContentParser::Handle_SetFont}, - {FXBSTR_ID('T', 'j', 0, 0), &CPDF_StreamContentParser::Handle_ShowText}, - {FXBSTR_ID('T', 'm', 0, 0), - &CPDF_StreamContentParser::Handle_SetTextMatrix}, - {FXBSTR_ID('T', 'r', 0, 0), - &CPDF_StreamContentParser::Handle_SetTextRenderMode}, - {FXBSTR_ID('T', 's', 0, 0), - &CPDF_StreamContentParser::Handle_SetTextRise}, - {FXBSTR_ID('T', 'w', 0, 0), - &CPDF_StreamContentParser::Handle_SetWordSpace}, - {FXBSTR_ID('T', 'z', 0, 0), - &CPDF_StreamContentParser::Handle_SetHorzScale}, - {FXBSTR_ID('W', 0, 0, 0), &CPDF_StreamContentParser::Handle_Clip}, - {FXBSTR_ID('W', '*', 0, 0), &CPDF_StreamContentParser::Handle_EOClip}, - {FXBSTR_ID('b', 0, 0, 0), - &CPDF_StreamContentParser::Handle_CloseFillStrokePath}, - {FXBSTR_ID('b', '*', 0, 0), - &CPDF_StreamContentParser::Handle_CloseEOFillStrokePath}, - {FXBSTR_ID('c', 0, 0, 0), &CPDF_StreamContentParser::Handle_CurveTo_123}, - {FXBSTR_ID('c', 'm', 0, 0), - &CPDF_StreamContentParser::Handle_ConcatMatrix}, - {FXBSTR_ID('c', 's', 0, 0), - &CPDF_StreamContentParser::Handle_SetColorSpace_Fill}, - {FXBSTR_ID('d', 0, 0, 0), &CPDF_StreamContentParser::Handle_SetDash}, - {FXBSTR_ID('d', '0', 0, 0), - &CPDF_StreamContentParser::Handle_SetCharWidth}, - {FXBSTR_ID('d', '1', 0, 0), - &CPDF_StreamContentParser::Handle_SetCachedDevice}, - {FXBSTR_ID('f', 0, 0, 0), &CPDF_StreamContentParser::Handle_FillPath}, - {FXBSTR_ID('f', '*', 0, 0), &CPDF_StreamContentParser::Handle_EOFillPath}, - {FXBSTR_ID('g', 0, 0, 0), &CPDF_StreamContentParser::Handle_SetGray_Fill}, - {FXBSTR_ID('g', 's', 0, 0), - &CPDF_StreamContentParser::Handle_SetExtendGraphState}, - {FXBSTR_ID('h', 0, 0, 0), &CPDF_StreamContentParser::Handle_ClosePath}, - {FXBSTR_ID('i', 0, 0, 0), &CPDF_StreamContentParser::Handle_SetFlat}, - {FXBSTR_ID('j', 0, 0, 0), &CPDF_StreamContentParser::Handle_SetLineJoin}, - {FXBSTR_ID('k', 0, 0, 0), - &CPDF_StreamContentParser::Handle_SetCMYKColor_Fill}, - {FXBSTR_ID('l', 0, 0, 0), &CPDF_StreamContentParser::Handle_LineTo}, - {FXBSTR_ID('m', 0, 0, 0), &CPDF_StreamContentParser::Handle_MoveTo}, - {FXBSTR_ID('n', 0, 0, 0), &CPDF_StreamContentParser::Handle_EndPath}, - {FXBSTR_ID('q', 0, 0, 0), - &CPDF_StreamContentParser::Handle_SaveGraphState}, - {FXBSTR_ID('r', 'e', 0, 0), &CPDF_StreamContentParser::Handle_Rectangle}, - {FXBSTR_ID('r', 'g', 0, 0), - &CPDF_StreamContentParser::Handle_SetRGBColor_Fill}, - {FXBSTR_ID('r', 'i', 0, 0), - &CPDF_StreamContentParser::Handle_SetRenderIntent}, - {FXBSTR_ID('s', 0, 0, 0), - &CPDF_StreamContentParser::Handle_CloseStrokePath}, - {FXBSTR_ID('s', 'c', 0, 0), - &CPDF_StreamContentParser::Handle_SetColor_Fill}, - {FXBSTR_ID('s', 'c', 'n', 0), - &CPDF_StreamContentParser::Handle_SetColorPS_Fill}, - {FXBSTR_ID('s', 'h', 0, 0), &CPDF_StreamContentParser::Handle_ShadeFill}, - {FXBSTR_ID('v', 0, 0, 0), &CPDF_StreamContentParser::Handle_CurveTo_23}, - {FXBSTR_ID('w', 0, 0, 0), &CPDF_StreamContentParser::Handle_SetLineWidth}, - {FXBSTR_ID('y', 0, 0, 0), &CPDF_StreamContentParser::Handle_CurveTo_13}, - }); -} - -void CPDF_StreamContentParser::OnOperator(const FX_CHAR* op) { - int i = 0; - uint32_t opid = 0; - while (i < 4 && op[i]) { - opid = (opid << 8) + op[i]; - i++; - } - while (i < 4) { - opid <<= 8; - i++; - } - - static const OpCodes s_OpCodes = InitializeOpCodes(); - - auto it = s_OpCodes.find(opid); - if (it != s_OpCodes.end()) - (this->*it->second)(); -} - -void CPDF_StreamContentParser::Handle_CloseFillStrokePath() { - Handle_ClosePath(); - AddPathObject(FXFILL_WINDING, true); -} - -void CPDF_StreamContentParser::Handle_FillStrokePath() { - AddPathObject(FXFILL_WINDING, true); -} - -void CPDF_StreamContentParser::Handle_CloseEOFillStrokePath() { - AddPathPoint(m_PathStartX, m_PathStartY, FXPT_LINETO | FXPT_CLOSEFIGURE); - AddPathObject(FXFILL_ALTERNATE, true); -} - -void CPDF_StreamContentParser::Handle_EOFillStrokePath() { - AddPathObject(FXFILL_ALTERNATE, true); -} - -void CPDF_StreamContentParser::Handle_BeginMarkedContent_Dictionary() { - CFX_ByteString tag = GetString(1); - CPDF_Object* pProperty = GetObject(0); - if (!pProperty) { - return; - } - bool bDirect = true; - if (pProperty->IsName()) { - pProperty = FindResourceObj("Properties", pProperty->GetString()); - if (!pProperty) - return; - bDirect = false; - } - if (CPDF_Dictionary* pDict = pProperty->AsDictionary()) { - m_CurContentMark.AddMark(tag, pDict, bDirect); - } -} - -void CPDF_StreamContentParser::Handle_BeginImage() { - FX_FILESIZE savePos = m_pSyntax->GetPos(); - CPDF_Dictionary* pDict = - new CPDF_Dictionary(m_pDocument->GetByteStringPool()); - while (1) { - CPDF_StreamParser::SyntaxType type = m_pSyntax->ParseNextElement(); - if (type == CPDF_StreamParser::Keyword) { - CFX_ByteString bsKeyword(m_pSyntax->GetWordBuf(), - m_pSyntax->GetWordSize()); - if (bsKeyword != "ID") { - m_pSyntax->SetPos(savePos); - pDict->Release(); - return; - } - } - if (type != CPDF_StreamParser::Name) { - break; - } - CFX_ByteString key((const FX_CHAR*)m_pSyntax->GetWordBuf() + 1, - m_pSyntax->GetWordSize() - 1); - std::unique_ptr<CPDF_Object, ReleaseDeleter<CPDF_Object>> pObj( - m_pSyntax->ReadNextObject(false, 0)); - if (!key.IsEmpty()) { - uint32_t dwObjNum = pObj ? pObj->GetObjNum() : 0; - if (dwObjNum) - pDict->SetReferenceFor(key, m_pDocument, dwObjNum); - else - pDict->SetFor(key, pObj.release()); - } - } - PDF_ReplaceAbbr(pDict); - CPDF_Object* pCSObj = nullptr; - if (pDict->KeyExist("ColorSpace")) { - pCSObj = pDict->GetDirectObjectFor("ColorSpace"); - if (pCSObj->IsName()) { - CFX_ByteString name = pCSObj->GetString(); - if (name != "DeviceRGB" && name != "DeviceGray" && name != "DeviceCMYK") { - pCSObj = FindResourceObj("ColorSpace", name); - if (pCSObj && pCSObj->IsInline()) { - pCSObj = pCSObj->Clone(); - pDict->SetFor("ColorSpace", pCSObj); - } - } - } - } - pDict->SetNameFor("Subtype", "Image"); - UniqueStream pStream(m_pSyntax->ReadInlineStream(m_pDocument, pDict, pCSObj)); - bool bGaveDictAway = !!pStream; - while (1) { - CPDF_StreamParser::SyntaxType type = m_pSyntax->ParseNextElement(); - if (type == CPDF_StreamParser::EndOfData) { - break; - } - if (type != CPDF_StreamParser::Keyword) { - continue; - } - if (m_pSyntax->GetWordSize() == 2 && m_pSyntax->GetWordBuf()[0] == 'E' && - m_pSyntax->GetWordBuf()[1] == 'I') { - break; - } - } - CPDF_ImageObject* pImgObj = AddImage(std::move(pStream)); - if (!pImgObj && !bGaveDictAway) - pDict->Release(); -} - -void CPDF_StreamContentParser::Handle_BeginMarkedContent() { - m_CurContentMark.AddMark(GetString(0), nullptr, FALSE); -} - -void CPDF_StreamContentParser::Handle_BeginText() { - m_pCurStates->m_TextMatrix.Set(1.0f, 0, 0, 1.0f, 0, 0); - OnChangeTextMatrix(); - m_pCurStates->m_TextX = 0; - m_pCurStates->m_TextY = 0; - m_pCurStates->m_TextLineX = 0; - m_pCurStates->m_TextLineY = 0; -} - -void CPDF_StreamContentParser::Handle_CurveTo_123() { - AddPathPoint(GetNumber(5), GetNumber(4), FXPT_BEZIERTO); - AddPathPoint(GetNumber(3), GetNumber(2), FXPT_BEZIERTO); - AddPathPoint(GetNumber(1), GetNumber(0), FXPT_BEZIERTO); -} - -void CPDF_StreamContentParser::Handle_ConcatMatrix() { - CFX_Matrix new_matrix(GetNumber(5), GetNumber(4), GetNumber(3), GetNumber(2), - GetNumber(1), GetNumber(0)); - new_matrix.Concat(m_pCurStates->m_CTM); - m_pCurStates->m_CTM = new_matrix; - OnChangeTextMatrix(); -} - -void CPDF_StreamContentParser::Handle_SetColorSpace_Fill() { - CPDF_ColorSpace* pCS = FindColorSpace(GetString(0)); - if (!pCS) - return; - - m_pCurStates->m_ColorState.GetMutableFillColor()->SetColorSpace(pCS); -} - -void CPDF_StreamContentParser::Handle_SetColorSpace_Stroke() { - CPDF_ColorSpace* pCS = FindColorSpace(GetString(0)); - if (!pCS) - return; - - m_pCurStates->m_ColorState.GetMutableStrokeColor()->SetColorSpace(pCS); -} - -void CPDF_StreamContentParser::Handle_SetDash() { - CPDF_Array* pArray = ToArray(GetObject(1)); - if (!pArray) - return; - - m_pCurStates->SetLineDash(pArray, GetNumber(0), 1.0f); -} - -void CPDF_StreamContentParser::Handle_SetCharWidth() { - m_Type3Data[0] = GetNumber(1); - m_Type3Data[1] = GetNumber(0); - m_bColored = true; -} - -void CPDF_StreamContentParser::Handle_SetCachedDevice() { - for (int i = 0; i < 6; i++) { - m_Type3Data[i] = GetNumber(5 - i); - } - m_bColored = false; -} - -void CPDF_StreamContentParser::Handle_ExecuteXObject() { - CFX_ByteString name = GetString(0); - if (name == m_LastImageName && m_pLastImage && m_pLastImage->GetStream() && - m_pLastImage->GetStream()->GetObjNum()) { - AddImage(m_pLastImage); - return; - } - - CPDF_Stream* pXObject = ToStream(FindResourceObj("XObject", name)); - if (!pXObject) { - m_bResourceMissing = true; - return; - } - - CFX_ByteString type; - if (pXObject->GetDict()) - type = pXObject->GetDict()->GetStringFor("Subtype"); - - if (type == "Image") { - CPDF_ImageObject* pObj = AddImage(pXObject->GetObjNum()); - m_LastImageName = name; - m_pLastImage = pObj->GetImage(); - if (!m_pObjectHolder->HasImageMask()) - m_pObjectHolder->SetHasImageMask(m_pLastImage->IsMask()); - } else if (type == "Form") { - AddForm(pXObject); - } -} - -void CPDF_StreamContentParser::AddForm(CPDF_Stream* pStream) { - std::unique_ptr<CPDF_FormObject> pFormObj(new CPDF_FormObject); - pFormObj->m_pForm.reset( - new CPDF_Form(m_pDocument, m_pPageResources, pStream, m_pResources)); - pFormObj->m_FormMatrix = m_pCurStates->m_CTM; - pFormObj->m_FormMatrix.Concat(m_mtContentToUser); - CPDF_AllStates status; - status.m_GeneralState = m_pCurStates->m_GeneralState; - status.m_GraphState = m_pCurStates->m_GraphState; - status.m_ColorState = m_pCurStates->m_ColorState; - status.m_TextState = m_pCurStates->m_TextState; - pFormObj->m_pForm->ParseContent(&status, nullptr, nullptr, m_Level + 1); - if (!m_pObjectHolder->BackgroundAlphaNeeded() && - pFormObj->m_pForm->BackgroundAlphaNeeded()) { - m_pObjectHolder->SetBackgroundAlphaNeeded(TRUE); - } - pFormObj->CalcBoundingBox(); - SetGraphicStates(pFormObj.get(), true, true, true); - m_pObjectHolder->GetPageObjectList()->push_back(std::move(pFormObj)); -} - -CPDF_ImageObject* CPDF_StreamContentParser::AddImage(UniqueStream pStream) { - if (!pStream) - return nullptr; - - auto pImageObj = pdfium::MakeUnique<CPDF_ImageObject>(); - pImageObj->SetOwnedImage( - pdfium::MakeUnique<CPDF_Image>(m_pDocument, pStream.release(), true)); - - return AddImageObject(std::move(pImageObj)); -} - -CPDF_ImageObject* CPDF_StreamContentParser::AddImage(uint32_t streamObjNum) { - CPDF_Stream* pStream = ToStream(m_pDocument->GetIndirectObject(streamObjNum)); - if (!pStream) - return nullptr; - - auto pImageObj = pdfium::MakeUnique<CPDF_ImageObject>(); - pImageObj->SetUnownedImage(m_pDocument->LoadImageF(pStream)); - return AddImageObject(std::move(pImageObj)); -} - -CPDF_ImageObject* CPDF_StreamContentParser::AddImage(CPDF_Image* pImage) { - if (!pImage) - return nullptr; - - auto pImageObj = pdfium::MakeUnique<CPDF_ImageObject>(); - pImageObj->SetUnownedImage( - m_pDocument->GetPageData()->GetImage(pImage->GetStream())); - - return AddImageObject(std::move(pImageObj)); -} - -CPDF_ImageObject* CPDF_StreamContentParser::AddImageObject( - std::unique_ptr<CPDF_ImageObject> pImageObj) { - SetGraphicStates(pImageObj.get(), pImageObj->GetImage()->IsMask(), false, - false); - - CFX_Matrix ImageMatrix = m_pCurStates->m_CTM; - ImageMatrix.Concat(m_mtContentToUser); - pImageObj->m_Matrix = ImageMatrix; - pImageObj->CalcBoundingBox(); - - CPDF_ImageObject* pRet = pImageObj.get(); - m_pObjectHolder->GetPageObjectList()->push_back(std::move(pImageObj)); - return pRet; -} - -void CPDF_StreamContentParser::Handle_MarkPlace_Dictionary() {} - -void CPDF_StreamContentParser::Handle_EndImage() {} - -void CPDF_StreamContentParser::Handle_EndMarkedContent() { - if (m_CurContentMark) - m_CurContentMark.DeleteLastMark(); -} - -void CPDF_StreamContentParser::Handle_EndText() { - if (m_ClipTextList.empty()) - return; - - if (TextRenderingModeIsClipMode(m_pCurStates->m_TextState.GetTextMode())) - m_pCurStates->m_ClipPath.AppendTexts(&m_ClipTextList); - - m_ClipTextList.clear(); -} - -void CPDF_StreamContentParser::Handle_FillPath() { - AddPathObject(FXFILL_WINDING, false); -} - -void CPDF_StreamContentParser::Handle_FillPathOld() { - AddPathObject(FXFILL_WINDING, false); -} - -void CPDF_StreamContentParser::Handle_EOFillPath() { - AddPathObject(FXFILL_ALTERNATE, false); -} - -void CPDF_StreamContentParser::Handle_SetGray_Fill() { - FX_FLOAT value = GetNumber(0); - CPDF_ColorSpace* pCS = CPDF_ColorSpace::GetStockCS(PDFCS_DEVICEGRAY); - m_pCurStates->m_ColorState.SetFillColor(pCS, &value, 1); -} - -void CPDF_StreamContentParser::Handle_SetGray_Stroke() { - FX_FLOAT value = GetNumber(0); - CPDF_ColorSpace* pCS = CPDF_ColorSpace::GetStockCS(PDFCS_DEVICEGRAY); - m_pCurStates->m_ColorState.SetStrokeColor(pCS, &value, 1); -} - -void CPDF_StreamContentParser::Handle_SetExtendGraphState() { - CFX_ByteString name = GetString(0); - CPDF_Dictionary* pGS = ToDictionary(FindResourceObj("ExtGState", name)); - if (!pGS) { - m_bResourceMissing = true; - return; - } - m_pCurStates->ProcessExtGS(pGS, this); -} - -void CPDF_StreamContentParser::Handle_ClosePath() { - if (m_PathPointCount == 0) { - return; - } - if (m_PathStartX != m_PathCurrentX || m_PathStartY != m_PathCurrentY) { - AddPathPoint(m_PathStartX, m_PathStartY, FXPT_LINETO | FXPT_CLOSEFIGURE); - } else if (m_pPathPoints[m_PathPointCount - 1].m_Flag != FXPT_MOVETO) { - m_pPathPoints[m_PathPointCount - 1].m_Flag |= FXPT_CLOSEFIGURE; - } -} - -void CPDF_StreamContentParser::Handle_SetFlat() { - m_pCurStates->m_GeneralState.SetFlatness(GetNumber(0)); -} - -void CPDF_StreamContentParser::Handle_BeginImageData() {} - -void CPDF_StreamContentParser::Handle_SetLineJoin() { - m_pCurStates->m_GraphState.SetLineJoin( - static_cast<CFX_GraphStateData::LineJoin>(GetInteger(0))); -} - -void CPDF_StreamContentParser::Handle_SetLineCap() { - m_pCurStates->m_GraphState.SetLineCap( - static_cast<CFX_GraphStateData::LineCap>(GetInteger(0))); -} - -void CPDF_StreamContentParser::Handle_SetCMYKColor_Fill() { - if (m_ParamCount != 4) - return; - - FX_FLOAT values[4]; - for (int i = 0; i < 4; i++) { - values[i] = GetNumber(3 - i); - } - CPDF_ColorSpace* pCS = CPDF_ColorSpace::GetStockCS(PDFCS_DEVICECMYK); - m_pCurStates->m_ColorState.SetFillColor(pCS, values, 4); -} - -void CPDF_StreamContentParser::Handle_SetCMYKColor_Stroke() { - if (m_ParamCount != 4) - return; - - FX_FLOAT values[4]; - for (int i = 0; i < 4; i++) { - values[i] = GetNumber(3 - i); - } - CPDF_ColorSpace* pCS = CPDF_ColorSpace::GetStockCS(PDFCS_DEVICECMYK); - m_pCurStates->m_ColorState.SetStrokeColor(pCS, values, 4); -} - -void CPDF_StreamContentParser::Handle_LineTo() { - if (m_ParamCount != 2) - return; - - AddPathPoint(GetNumber(1), GetNumber(0), FXPT_LINETO); -} - -void CPDF_StreamContentParser::Handle_MoveTo() { - if (m_ParamCount != 2) - return; - - AddPathPoint(GetNumber(1), GetNumber(0), FXPT_MOVETO); - ParsePathObject(); -} - -void CPDF_StreamContentParser::Handle_SetMiterLimit() { - m_pCurStates->m_GraphState.SetMiterLimit(GetNumber(0)); -} - -void CPDF_StreamContentParser::Handle_MarkPlace() {} - -void CPDF_StreamContentParser::Handle_EndPath() { - AddPathObject(0, false); -} - -void CPDF_StreamContentParser::Handle_SaveGraphState() { - std::unique_ptr<CPDF_AllStates> pStates(new CPDF_AllStates); - pStates->Copy(*m_pCurStates); - m_StateStack.push_back(std::move(pStates)); -} - -void CPDF_StreamContentParser::Handle_RestoreGraphState() { - if (m_StateStack.empty()) - return; - std::unique_ptr<CPDF_AllStates> pStates = std::move(m_StateStack.back()); - m_StateStack.pop_back(); - m_pCurStates->Copy(*pStates); -} - -void CPDF_StreamContentParser::Handle_Rectangle() { - FX_FLOAT x = GetNumber(3), y = GetNumber(2); - FX_FLOAT w = GetNumber(1), h = GetNumber(0); - AddPathRect(x, y, w, h); -} - -void CPDF_StreamContentParser::AddPathRect(FX_FLOAT x, - FX_FLOAT y, - FX_FLOAT w, - FX_FLOAT h) { - AddPathPoint(x, y, FXPT_MOVETO); - AddPathPoint(x + w, y, FXPT_LINETO); - AddPathPoint(x + w, y + h, FXPT_LINETO); - AddPathPoint(x, y + h, FXPT_LINETO); - AddPathPoint(x, y, FXPT_LINETO | FXPT_CLOSEFIGURE); -} - -void CPDF_StreamContentParser::Handle_SetRGBColor_Fill() { - if (m_ParamCount != 3) - return; - - FX_FLOAT values[3]; - for (int i = 0; i < 3; i++) { - values[i] = GetNumber(2 - i); - } - CPDF_ColorSpace* pCS = CPDF_ColorSpace::GetStockCS(PDFCS_DEVICERGB); - m_pCurStates->m_ColorState.SetFillColor(pCS, values, 3); -} - -void CPDF_StreamContentParser::Handle_SetRGBColor_Stroke() { - if (m_ParamCount != 3) - return; - - FX_FLOAT values[3]; - for (int i = 0; i < 3; i++) { - values[i] = GetNumber(2 - i); - } - CPDF_ColorSpace* pCS = CPDF_ColorSpace::GetStockCS(PDFCS_DEVICERGB); - m_pCurStates->m_ColorState.SetStrokeColor(pCS, values, 3); -} - -void CPDF_StreamContentParser::Handle_SetRenderIntent() {} - -void CPDF_StreamContentParser::Handle_CloseStrokePath() { - Handle_ClosePath(); - AddPathObject(0, true); -} - -void CPDF_StreamContentParser::Handle_StrokePath() { - AddPathObject(0, true); -} - -void CPDF_StreamContentParser::Handle_SetColor_Fill() { - FX_FLOAT values[4]; - int nargs = m_ParamCount; - if (nargs > 4) { - nargs = 4; - } - for (int i = 0; i < nargs; i++) { - values[i] = GetNumber(nargs - i - 1); - } - m_pCurStates->m_ColorState.SetFillColor(nullptr, values, nargs); -} - -void CPDF_StreamContentParser::Handle_SetColor_Stroke() { - FX_FLOAT values[4]; - int nargs = m_ParamCount; - if (nargs > 4) { - nargs = 4; - } - for (int i = 0; i < nargs; i++) { - values[i] = GetNumber(nargs - i - 1); - } - m_pCurStates->m_ColorState.SetStrokeColor(nullptr, values, nargs); -} - -void CPDF_StreamContentParser::Handle_SetColorPS_Fill() { - CPDF_Object* pLastParam = GetObject(0); - if (!pLastParam) { - return; - } - uint32_t nargs = m_ParamCount; - uint32_t nvalues = nargs; - if (pLastParam->IsName()) - nvalues--; - FX_FLOAT* values = nullptr; - if (nvalues) { - values = FX_Alloc(FX_FLOAT, nvalues); - for (uint32_t i = 0; i < nvalues; i++) { - values[i] = GetNumber(nargs - i - 1); - } - } - if (nvalues != nargs) { - CPDF_Pattern* pPattern = FindPattern(GetString(0), false); - if (pPattern) { - m_pCurStates->m_ColorState.SetFillPattern(pPattern, values, nvalues); - } - } else { - m_pCurStates->m_ColorState.SetFillColor(nullptr, values, nvalues); - } - FX_Free(values); -} - -void CPDF_StreamContentParser::Handle_SetColorPS_Stroke() { - CPDF_Object* pLastParam = GetObject(0); - if (!pLastParam) { - return; - } - int nargs = m_ParamCount; - int nvalues = nargs; - if (pLastParam->IsName()) - nvalues--; - - FX_FLOAT* values = nullptr; - if (nvalues) { - values = FX_Alloc(FX_FLOAT, nvalues); - for (int i = 0; i < nvalues; i++) { - values[i] = GetNumber(nargs - i - 1); - } - } - if (nvalues != nargs) { - CPDF_Pattern* pPattern = FindPattern(GetString(0), false); - if (pPattern) { - m_pCurStates->m_ColorState.SetStrokePattern(pPattern, values, nvalues); - } - } else { - m_pCurStates->m_ColorState.SetStrokeColor(nullptr, values, nvalues); - } - FX_Free(values); -} - -void CPDF_StreamContentParser::Handle_ShadeFill() { - CPDF_Pattern* pPattern = FindPattern(GetString(0), true); - if (!pPattern) - return; - - CPDF_ShadingPattern* pShading = pPattern->AsShadingPattern(); - if (!pShading) - return; - - if (!pShading->IsShadingObject() || !pShading->Load()) - return; - - std::unique_ptr<CPDF_ShadingObject> pObj(new CPDF_ShadingObject); - pObj->m_pShading = pShading; - SetGraphicStates(pObj.get(), false, false, false); - pObj->m_Matrix = m_pCurStates->m_CTM; - pObj->m_Matrix.Concat(m_mtContentToUser); - CFX_FloatRect bbox = - pObj->m_ClipPath ? pObj->m_ClipPath.GetClipBox() : m_BBox; - if (pShading->IsMeshShading()) - bbox.Intersect(GetShadingBBox(pShading, pObj->m_Matrix)); - pObj->m_Left = bbox.left; - pObj->m_Right = bbox.right; - pObj->m_Top = bbox.top; - pObj->m_Bottom = bbox.bottom; - m_pObjectHolder->GetPageObjectList()->push_back(std::move(pObj)); -} - -void CPDF_StreamContentParser::Handle_SetCharSpace() { - m_pCurStates->m_TextState.SetCharSpace(GetNumber(0)); -} - -void CPDF_StreamContentParser::Handle_MoveTextPoint() { - m_pCurStates->m_TextLineX += GetNumber(1); - m_pCurStates->m_TextLineY += GetNumber(0); - m_pCurStates->m_TextX = m_pCurStates->m_TextLineX; - m_pCurStates->m_TextY = m_pCurStates->m_TextLineY; -} - -void CPDF_StreamContentParser::Handle_MoveTextPoint_SetLeading() { - Handle_MoveTextPoint(); - m_pCurStates->m_TextLeading = -GetNumber(0); -} - -void CPDF_StreamContentParser::Handle_SetFont() { - FX_FLOAT fs = GetNumber(0); - if (fs == 0) { - fs = m_DefFontSize; - } - m_pCurStates->m_TextState.SetFontSize(fs); - CPDF_Font* pFont = FindFont(GetString(1)); - if (pFont) { - m_pCurStates->m_TextState.SetFont(pFont); - } -} - -CPDF_Object* CPDF_StreamContentParser::FindResourceObj( - const CFX_ByteString& type, - const CFX_ByteString& name) { - if (!m_pResources) - return nullptr; - CPDF_Dictionary* pDict = m_pResources->GetDictFor(type); - if (pDict) - return pDict->GetDirectObjectFor(name); - if (m_pResources == m_pPageResources || !m_pPageResources) - return nullptr; - - CPDF_Dictionary* pPageDict = m_pPageResources->GetDictFor(type); - return pPageDict ? pPageDict->GetDirectObjectFor(name) : nullptr; -} - -CPDF_Font* CPDF_StreamContentParser::FindFont(const CFX_ByteString& name) { - CPDF_Dictionary* pFontDict = ToDictionary(FindResourceObj("Font", name)); - if (!pFontDict) { - m_bResourceMissing = true; - return CPDF_Font::GetStockFont(m_pDocument, "Helvetica"); - } - - CPDF_Font* pFont = m_pDocument->LoadFont(pFontDict); - if (pFont && pFont->IsType3Font()) { - pFont->AsType3Font()->SetPageResources(m_pResources); - pFont->AsType3Font()->CheckType3FontMetrics(); - } - return pFont; -} - -CPDF_ColorSpace* CPDF_StreamContentParser::FindColorSpace( - const CFX_ByteString& name) { - if (name == "Pattern") { - return CPDF_ColorSpace::GetStockCS(PDFCS_PATTERN); - } - if (name == "DeviceGray" || name == "DeviceCMYK" || name == "DeviceRGB") { - CFX_ByteString defname = "Default"; - defname += name.Mid(7); - CPDF_Object* pDefObj = FindResourceObj("ColorSpace", defname); - if (!pDefObj) { - if (name == "DeviceGray") { - return CPDF_ColorSpace::GetStockCS(PDFCS_DEVICEGRAY); - } - if (name == "DeviceRGB") { - return CPDF_ColorSpace::GetStockCS(PDFCS_DEVICERGB); - } - return CPDF_ColorSpace::GetStockCS(PDFCS_DEVICECMYK); - } - return m_pDocument->LoadColorSpace(pDefObj); - } - CPDF_Object* pCSObj = FindResourceObj("ColorSpace", name); - if (!pCSObj) { - m_bResourceMissing = true; - return nullptr; - } - return m_pDocument->LoadColorSpace(pCSObj); -} - -CPDF_Pattern* CPDF_StreamContentParser::FindPattern(const CFX_ByteString& name, - bool bShading) { - CPDF_Object* pPattern = - FindResourceObj(bShading ? "Shading" : "Pattern", name); - if (!pPattern || (!pPattern->IsDictionary() && !pPattern->IsStream())) { - m_bResourceMissing = true; - return nullptr; - } - return m_pDocument->LoadPattern(pPattern, bShading, - m_pCurStates->m_ParentMatrix); -} - -void CPDF_StreamContentParser::ConvertTextSpace(FX_FLOAT& x, FX_FLOAT& y) { - m_pCurStates->m_TextMatrix.Transform(x, y, x, y); - ConvertUserSpace(x, y); -} - -void CPDF_StreamContentParser::ConvertUserSpace(FX_FLOAT& x, FX_FLOAT& y) { - m_pCurStates->m_CTM.Transform(x, y, x, y); - m_mtContentToUser.Transform(x, y, x, y); -} - -void CPDF_StreamContentParser::AddTextObject(CFX_ByteString* pStrs, - FX_FLOAT fInitKerning, - FX_FLOAT* pKerning, - int nsegs) { - CPDF_Font* pFont = m_pCurStates->m_TextState.GetFont(); - if (!pFont) { - return; - } - if (fInitKerning != 0) { - if (!pFont->IsVertWriting()) { - m_pCurStates->m_TextX -= - (fInitKerning * m_pCurStates->m_TextState.GetFontSize()) / 1000; - } else { - m_pCurStates->m_TextY -= - (fInitKerning * m_pCurStates->m_TextState.GetFontSize()) / 1000; - } - } - if (nsegs == 0) { - return; - } - const TextRenderingMode text_mode = - pFont->IsType3Font() ? TextRenderingMode::MODE_FILL - : m_pCurStates->m_TextState.GetTextMode(); - { - std::unique_ptr<CPDF_TextObject> pText(new CPDF_TextObject); - m_pLastTextObject = pText.get(); - SetGraphicStates(m_pLastTextObject, true, true, true); - if (TextRenderingModeIsStrokeMode(text_mode)) { - FX_FLOAT* pCTM = pText->m_TextState.GetMutableCTM(); - pCTM[0] = m_pCurStates->m_CTM.a; - pCTM[1] = m_pCurStates->m_CTM.c; - pCTM[2] = m_pCurStates->m_CTM.b; - pCTM[3] = m_pCurStates->m_CTM.d; - } - pText->SetSegments(pStrs, pKerning, nsegs); - pText->m_PosX = m_pCurStates->m_TextX; - pText->m_PosY = m_pCurStates->m_TextY + m_pCurStates->m_TextRise; - ConvertTextSpace(pText->m_PosX, pText->m_PosY); - FX_FLOAT x_advance; - FX_FLOAT y_advance; - pText->CalcPositionData(&x_advance, &y_advance, - m_pCurStates->m_TextHorzScale); - m_pCurStates->m_TextX += x_advance; - m_pCurStates->m_TextY += y_advance; - if (TextRenderingModeIsClipMode(text_mode)) { - m_ClipTextList.push_back( - std::unique_ptr<CPDF_TextObject>(pText->Clone())); - } - m_pObjectHolder->GetPageObjectList()->push_back(std::move(pText)); - } - if (pKerning && pKerning[nsegs - 1] != 0) { - if (!pFont->IsVertWriting()) { - m_pCurStates->m_TextX -= - (pKerning[nsegs - 1] * m_pCurStates->m_TextState.GetFontSize()) / - 1000; - } else { - m_pCurStates->m_TextY -= - (pKerning[nsegs - 1] * m_pCurStates->m_TextState.GetFontSize()) / - 1000; - } - } -} - -void CPDF_StreamContentParser::Handle_ShowText() { - CFX_ByteString str = GetString(0); - if (str.IsEmpty()) { - return; - } - AddTextObject(&str, 0, nullptr, 1); -} - -void CPDF_StreamContentParser::Handle_ShowText_Positioning() { - CPDF_Array* pArray = ToArray(GetObject(0)); - if (!pArray) - return; - - size_t n = pArray->GetCount(); - size_t nsegs = 0; - for (size_t i = 0; i < n; i++) { - if (pArray->GetDirectObjectAt(i)->IsString()) - nsegs++; - } - if (nsegs == 0) { - for (size_t i = 0; i < n; i++) { - m_pCurStates->m_TextX -= - (pArray->GetNumberAt(i) * m_pCurStates->m_TextState.GetFontSize()) / - 1000; - } - return; - } - CFX_ByteString* pStrs = new CFX_ByteString[nsegs]; - FX_FLOAT* pKerning = FX_Alloc(FX_FLOAT, nsegs); - size_t iSegment = 0; - FX_FLOAT fInitKerning = 0; - for (size_t i = 0; i < n; i++) { - CPDF_Object* pObj = pArray->GetDirectObjectAt(i); - if (pObj->IsString()) { - CFX_ByteString str = pObj->GetString(); - if (str.IsEmpty()) { - continue; - } - pStrs[iSegment] = str; - pKerning[iSegment++] = 0; - } else { - FX_FLOAT num = pObj ? pObj->GetNumber() : 0; - if (iSegment == 0) { - fInitKerning += num; - } else { - pKerning[iSegment - 1] += num; - } - } - } - AddTextObject(pStrs, fInitKerning, pKerning, iSegment); - delete[] pStrs; - FX_Free(pKerning); -} - -void CPDF_StreamContentParser::Handle_SetTextLeading() { - m_pCurStates->m_TextLeading = GetNumber(0); -} - -void CPDF_StreamContentParser::Handle_SetTextMatrix() { - m_pCurStates->m_TextMatrix.Set(GetNumber(5), GetNumber(4), GetNumber(3), - GetNumber(2), GetNumber(1), GetNumber(0)); - OnChangeTextMatrix(); - m_pCurStates->m_TextX = 0; - m_pCurStates->m_TextY = 0; - m_pCurStates->m_TextLineX = 0; - m_pCurStates->m_TextLineY = 0; -} - -void CPDF_StreamContentParser::OnChangeTextMatrix() { - CFX_Matrix text_matrix(m_pCurStates->m_TextHorzScale, 0.0f, 0.0f, 1.0f, 0.0f, - 0.0f); - text_matrix.Concat(m_pCurStates->m_TextMatrix); - text_matrix.Concat(m_pCurStates->m_CTM); - text_matrix.Concat(m_mtContentToUser); - FX_FLOAT* pTextMatrix = m_pCurStates->m_TextState.GetMutableMatrix(); - pTextMatrix[0] = text_matrix.a; - pTextMatrix[1] = text_matrix.c; - pTextMatrix[2] = text_matrix.b; - pTextMatrix[3] = text_matrix.d; -} - -void CPDF_StreamContentParser::Handle_SetTextRenderMode() { - TextRenderingMode mode; - if (SetTextRenderingModeFromInt(GetInteger(0), &mode)) - m_pCurStates->m_TextState.SetTextMode(mode); -} - -void CPDF_StreamContentParser::Handle_SetTextRise() { - m_pCurStates->m_TextRise = GetNumber(0); -} - -void CPDF_StreamContentParser::Handle_SetWordSpace() { - m_pCurStates->m_TextState.SetWordSpace(GetNumber(0)); -} - -void CPDF_StreamContentParser::Handle_SetHorzScale() { - if (m_ParamCount != 1) { - return; - } - m_pCurStates->m_TextHorzScale = GetNumber(0) / 100; - OnChangeTextMatrix(); -} - -void CPDF_StreamContentParser::Handle_MoveToNextLine() { - m_pCurStates->m_TextLineY -= m_pCurStates->m_TextLeading; - m_pCurStates->m_TextX = m_pCurStates->m_TextLineX; - m_pCurStates->m_TextY = m_pCurStates->m_TextLineY; -} - -void CPDF_StreamContentParser::Handle_CurveTo_23() { - AddPathPoint(m_PathCurrentX, m_PathCurrentY, FXPT_BEZIERTO); - AddPathPoint(GetNumber(3), GetNumber(2), FXPT_BEZIERTO); - AddPathPoint(GetNumber(1), GetNumber(0), FXPT_BEZIERTO); -} - -void CPDF_StreamContentParser::Handle_SetLineWidth() { - m_pCurStates->m_GraphState.SetLineWidth(GetNumber(0)); -} - -void CPDF_StreamContentParser::Handle_Clip() { - m_PathClipType = FXFILL_WINDING; -} - -void CPDF_StreamContentParser::Handle_EOClip() { - m_PathClipType = FXFILL_ALTERNATE; -} - -void CPDF_StreamContentParser::Handle_CurveTo_13() { - AddPathPoint(GetNumber(3), GetNumber(2), FXPT_BEZIERTO); - AddPathPoint(GetNumber(1), GetNumber(0), FXPT_BEZIERTO); - AddPathPoint(GetNumber(1), GetNumber(0), FXPT_BEZIERTO); -} - -void CPDF_StreamContentParser::Handle_NextLineShowText() { - Handle_MoveToNextLine(); - Handle_ShowText(); -} - -void CPDF_StreamContentParser::Handle_NextLineShowText_Space() { - m_pCurStates->m_TextState.SetWordSpace(GetNumber(2)); - m_pCurStates->m_TextState.SetCharSpace(GetNumber(1)); - Handle_NextLineShowText(); -} - -void CPDF_StreamContentParser::Handle_Invalid() {} - -void CPDF_StreamContentParser::AddPathPoint(FX_FLOAT x, FX_FLOAT y, int flag) { - m_PathCurrentX = x; - m_PathCurrentY = y; - if (flag == FXPT_MOVETO) { - m_PathStartX = x; - m_PathStartY = y; - if (m_PathPointCount && - m_pPathPoints[m_PathPointCount - 1].m_Flag == FXPT_MOVETO) { - m_pPathPoints[m_PathPointCount - 1].m_PointX = x; - m_pPathPoints[m_PathPointCount - 1].m_PointY = y; - return; - } - } else if (m_PathPointCount == 0) { - return; - } - m_PathPointCount++; - if (m_PathPointCount > m_PathAllocSize) { - int newsize = m_PathPointCount + 256; - FX_PATHPOINT* pNewPoints = FX_Alloc(FX_PATHPOINT, newsize); - if (m_PathAllocSize) { - FXSYS_memcpy(pNewPoints, m_pPathPoints, - m_PathAllocSize * sizeof(FX_PATHPOINT)); - FX_Free(m_pPathPoints); - } - m_pPathPoints = pNewPoints; - m_PathAllocSize = newsize; - } - m_pPathPoints[m_PathPointCount - 1].m_Flag = flag; - m_pPathPoints[m_PathPointCount - 1].m_PointX = x; - m_pPathPoints[m_PathPointCount - 1].m_PointY = y; -} - -void CPDF_StreamContentParser::AddPathObject(int FillType, bool bStroke) { - int PathPointCount = m_PathPointCount; - uint8_t PathClipType = m_PathClipType; - m_PathPointCount = 0; - m_PathClipType = 0; - if (PathPointCount <= 1) { - if (PathPointCount && PathClipType) { - CPDF_Path path; - path.AppendRect(0, 0, 0, 0); - m_pCurStates->m_ClipPath.AppendPath(path, FXFILL_WINDING, TRUE); - } - return; - } - if (PathPointCount && - m_pPathPoints[PathPointCount - 1].m_Flag == FXPT_MOVETO) { - PathPointCount--; - } - CPDF_Path Path; - Path.SetPointCount(PathPointCount); - FXSYS_memcpy(Path.GetMutablePoints(), m_pPathPoints, - sizeof(FX_PATHPOINT) * PathPointCount); - CFX_Matrix matrix = m_pCurStates->m_CTM; - matrix.Concat(m_mtContentToUser); - if (bStroke || FillType) { - std::unique_ptr<CPDF_PathObject> pPathObj(new CPDF_PathObject); - pPathObj->m_bStroke = bStroke; - pPathObj->m_FillType = FillType; - pPathObj->m_Path = Path; - pPathObj->m_Matrix = matrix; - SetGraphicStates(pPathObj.get(), true, false, true); - pPathObj->CalcBoundingBox(); - m_pObjectHolder->GetPageObjectList()->push_back(std::move(pPathObj)); - } - if (PathClipType) { - if (!matrix.IsIdentity()) { - Path.Transform(&matrix); - matrix.SetIdentity(); - } - m_pCurStates->m_ClipPath.AppendPath(Path, PathClipType, TRUE); - } -} - -uint32_t CPDF_StreamContentParser::Parse(const uint8_t* pData, - uint32_t dwSize, - uint32_t max_cost) { - if (m_Level > _FPDF_MAX_FORM_LEVEL_) { - return dwSize; - } - uint32_t InitObjCount = m_pObjectHolder->GetPageObjectList()->size(); - CPDF_StreamParser syntax(pData, dwSize, m_pDocument->GetByteStringPool()); - CPDF_StreamParserAutoClearer auto_clearer(&m_pSyntax, &syntax); - while (1) { - uint32_t cost = m_pObjectHolder->GetPageObjectList()->size() - InitObjCount; - if (max_cost && cost >= max_cost) { - break; - } - switch (syntax.ParseNextElement()) { - case CPDF_StreamParser::EndOfData: - return m_pSyntax->GetPos(); - case CPDF_StreamParser::Keyword: - OnOperator((char*)syntax.GetWordBuf()); - ClearAllParams(); - break; - case CPDF_StreamParser::Number: - AddNumberParam((char*)syntax.GetWordBuf(), syntax.GetWordSize()); - break; - case CPDF_StreamParser::Name: - AddNameParam((const FX_CHAR*)syntax.GetWordBuf() + 1, - syntax.GetWordSize() - 1); - break; - default: - AddObjectParam(syntax.GetObject()); - } - } - return m_pSyntax->GetPos(); -} - -void CPDF_StreamContentParser::ParsePathObject() { - FX_FLOAT params[6] = {}; - int nParams = 0; - int last_pos = m_pSyntax->GetPos(); - while (1) { - CPDF_StreamParser::SyntaxType type = m_pSyntax->ParseNextElement(); - FX_BOOL bProcessed = TRUE; - switch (type) { - case CPDF_StreamParser::EndOfData: - return; - case CPDF_StreamParser::Keyword: { - int len = m_pSyntax->GetWordSize(); - if (len == 1) { - switch (m_pSyntax->GetWordBuf()[0]) { - case kPathOperatorSubpath: - AddPathPoint(params[0], params[1], FXPT_MOVETO); - nParams = 0; - break; - case kPathOperatorLine: - AddPathPoint(params[0], params[1], FXPT_LINETO); - nParams = 0; - break; - case kPathOperatorCubicBezier1: - AddPathPoint(params[0], params[1], FXPT_BEZIERTO); - AddPathPoint(params[2], params[3], FXPT_BEZIERTO); - AddPathPoint(params[4], params[5], FXPT_BEZIERTO); - nParams = 0; - break; - case kPathOperatorCubicBezier2: - AddPathPoint(m_PathCurrentX, m_PathCurrentY, FXPT_BEZIERTO); - AddPathPoint(params[0], params[1], FXPT_BEZIERTO); - AddPathPoint(params[2], params[3], FXPT_BEZIERTO); - nParams = 0; - break; - case kPathOperatorCubicBezier3: - AddPathPoint(params[0], params[1], FXPT_BEZIERTO); - AddPathPoint(params[2], params[3], FXPT_BEZIERTO); - AddPathPoint(params[2], params[3], FXPT_BEZIERTO); - nParams = 0; - break; - case kPathOperatorClosePath: - Handle_ClosePath(); - nParams = 0; - break; - default: - bProcessed = FALSE; - break; - } - } else if (len == 2) { - if (m_pSyntax->GetWordBuf()[0] == kPathOperatorRectangle[0] && - m_pSyntax->GetWordBuf()[1] == kPathOperatorRectangle[1]) { - AddPathRect(params[0], params[1], params[2], params[3]); - nParams = 0; - } else { - bProcessed = FALSE; - } - } else { - bProcessed = FALSE; - } - if (bProcessed) { - last_pos = m_pSyntax->GetPos(); - } - break; - } - case CPDF_StreamParser::Number: { - if (nParams == 6) - break; - - int value; - bool bInteger = FX_atonum( - CFX_ByteStringC(m_pSyntax->GetWordBuf(), m_pSyntax->GetWordSize()), - &value); - params[nParams++] = bInteger ? (FX_FLOAT)value : *(FX_FLOAT*)&value; - break; - } - default: - bProcessed = FALSE; - } - if (!bProcessed) { - m_pSyntax->SetPos(last_pos); - return; - } - } -} - void PDF_ReplaceAbbr(CPDF_Object* pObj) { switch (pObj->GetType()) { case CPDF_Object::DICTIONARY: { diff --git a/core/fpdfapi/page/pageint.h b/core/fpdfapi/page/pageint.h index 7ab9c6c863..d70ecf1a6e 100644 --- a/core/fpdfapi/page/pageint.h +++ b/core/fpdfapi/page/pageint.h @@ -16,6 +16,7 @@ #include "core/fpdfapi/page/cpdf_contentmark.h" #include "core/fpdfapi/page/cpdf_countedobject.h" #include "core/fpdfapi/page/cpdf_pageobjectholder.h" +#include "core/fpdfapi/page/cpdf_streamcontentparser.h" #include "core/fpdfapi/parser/cpdf_stream.h" #include "core/fxcrt/cfx_string_pool_template.h" #include "core/fxcrt/cfx_weak_ptr.h" @@ -79,202 +80,8 @@ class CPDF_StreamParser { CFX_WeakPtr<CFX_ByteStringPool> m_pPool; }; -#define PARAM_BUF_SIZE 16 - -struct ContentParam { - enum Type { OBJECT = 0, NUMBER, NAME }; - Type m_Type; - union { - struct { - bool m_bInteger; - union { - int m_Integer; - FX_FLOAT m_Float; - }; - } m_Number; - CPDF_Object* m_pObject; - struct { - int m_Len; - char m_Buffer[32]; - } m_Name; - }; -}; - -#define _FPDF_MAX_FORM_LEVEL_ 30 #define _FPDF_MAX_TYPE3_FORM_LEVEL_ 4 -class CPDF_StreamContentParser { - public: - CPDF_StreamContentParser(CPDF_Document* pDoc, - CPDF_Dictionary* pPageResources, - CPDF_Dictionary* pParentResources, - const CFX_Matrix* pmtContentToUser, - CPDF_PageObjectHolder* pObjectHolder, - CPDF_Dictionary* pResources, - CFX_FloatRect* pBBox, - CPDF_AllStates* pAllStates, - int level); - ~CPDF_StreamContentParser(); - - CPDF_PageObjectHolder* GetPageObjectHolder() const { return m_pObjectHolder; } - CPDF_AllStates* GetCurStates() const { return m_pCurStates.get(); } - bool IsColored() const { return m_bColored; } - const FX_FLOAT* GetType3Data() const { return m_Type3Data; } - - void AddNumberParam(const FX_CHAR* str, int len); - void AddObjectParam(CPDF_Object* pObj); - void AddNameParam(const FX_CHAR* name, int size); - int GetNextParamPos(); - void ClearAllParams(); - CPDF_Object* GetObject(uint32_t index); - CFX_ByteString GetString(uint32_t index); - FX_FLOAT GetNumber(uint32_t index); - int GetInteger(uint32_t index) { return (int32_t)(GetNumber(index)); } - void OnOperator(const FX_CHAR* op); - void AddTextObject(CFX_ByteString* pText, - FX_FLOAT fInitKerning, - FX_FLOAT* pKerning, - int count); - - void ConvertUserSpace(FX_FLOAT& x, FX_FLOAT& y); - void ConvertTextSpace(FX_FLOAT& x, FX_FLOAT& y); - void OnChangeTextMatrix(); - uint32_t Parse(const uint8_t* pData, uint32_t dwSize, uint32_t max_cost); - void ParsePathObject(); - void AddPathPoint(FX_FLOAT x, FX_FLOAT y, int flag); - void AddPathRect(FX_FLOAT x, FX_FLOAT y, FX_FLOAT w, FX_FLOAT h); - void AddPathObject(int FillType, bool bStroke); - CPDF_ImageObject* AddImage(UniqueStream pStream); - CPDF_ImageObject* AddImage(uint32_t streamObjNum); - CPDF_ImageObject* AddImage(CPDF_Image* pImage); - - void AddForm(CPDF_Stream* pStream); - void SetGraphicStates(CPDF_PageObject* pObj, - bool bColor, - bool bText, - bool bGraph); - CPDF_Font* FindFont(const CFX_ByteString& name); - CPDF_ColorSpace* FindColorSpace(const CFX_ByteString& name); - CPDF_Pattern* FindPattern(const CFX_ByteString& name, bool bShading); - CPDF_Object* FindResourceObj(const CFX_ByteString& type, - const CFX_ByteString& name); - - private: - using OpCodes = - std::unordered_map<uint32_t, void (CPDF_StreamContentParser::*)()>; - static OpCodes InitializeOpCodes(); - - // Takes ownership of |pImageObj|, returns unowned pointer to it. - CPDF_ImageObject* AddImageObject(std::unique_ptr<CPDF_ImageObject> pImageObj); - - void Handle_CloseFillStrokePath(); - void Handle_FillStrokePath(); - void Handle_CloseEOFillStrokePath(); - void Handle_EOFillStrokePath(); - void Handle_BeginMarkedContent_Dictionary(); - void Handle_BeginImage(); - void Handle_BeginMarkedContent(); - void Handle_BeginText(); - void Handle_CurveTo_123(); - void Handle_ConcatMatrix(); - void Handle_SetColorSpace_Fill(); - void Handle_SetColorSpace_Stroke(); - void Handle_SetDash(); - void Handle_SetCharWidth(); - void Handle_SetCachedDevice(); - void Handle_ExecuteXObject(); - void Handle_MarkPlace_Dictionary(); - void Handle_EndImage(); - void Handle_EndMarkedContent(); - void Handle_EndText(); - void Handle_FillPath(); - void Handle_FillPathOld(); - void Handle_EOFillPath(); - void Handle_SetGray_Fill(); - void Handle_SetGray_Stroke(); - void Handle_SetExtendGraphState(); - void Handle_ClosePath(); - void Handle_SetFlat(); - void Handle_BeginImageData(); - void Handle_SetLineJoin(); - void Handle_SetLineCap(); - void Handle_SetCMYKColor_Fill(); - void Handle_SetCMYKColor_Stroke(); - void Handle_LineTo(); - void Handle_MoveTo(); - void Handle_SetMiterLimit(); - void Handle_MarkPlace(); - void Handle_EndPath(); - void Handle_SaveGraphState(); - void Handle_RestoreGraphState(); - void Handle_Rectangle(); - void Handle_SetRGBColor_Fill(); - void Handle_SetRGBColor_Stroke(); - void Handle_SetRenderIntent(); - void Handle_CloseStrokePath(); - void Handle_StrokePath(); - void Handle_SetColor_Fill(); - void Handle_SetColor_Stroke(); - void Handle_SetColorPS_Fill(); - void Handle_SetColorPS_Stroke(); - void Handle_ShadeFill(); - void Handle_SetCharSpace(); - void Handle_MoveTextPoint(); - void Handle_MoveTextPoint_SetLeading(); - void Handle_SetFont(); - void Handle_ShowText(); - void Handle_ShowText_Positioning(); - void Handle_SetTextLeading(); - void Handle_SetTextMatrix(); - void Handle_SetTextRenderMode(); - void Handle_SetTextRise(); - void Handle_SetWordSpace(); - void Handle_SetHorzScale(); - void Handle_MoveToNextLine(); - void Handle_CurveTo_23(); - void Handle_SetLineWidth(); - void Handle_Clip(); - void Handle_EOClip(); - void Handle_CurveTo_13(); - void Handle_NextLineShowText(); - void Handle_NextLineShowText_Space(); - void Handle_Invalid(); - - CPDF_Document* const m_pDocument; - CPDF_Dictionary* m_pPageResources; - CPDF_Dictionary* m_pParentResources; - CPDF_Dictionary* m_pResources; - CPDF_PageObjectHolder* m_pObjectHolder; - int m_Level; - CFX_Matrix m_mtContentToUser; - CFX_FloatRect m_BBox; - ContentParam m_ParamBuf[PARAM_BUF_SIZE]; - uint32_t m_ParamStartPos; - uint32_t m_ParamCount; - CPDF_StreamParser* m_pSyntax; - std::unique_ptr<CPDF_AllStates> m_pCurStates; - CPDF_ContentMark m_CurContentMark; - std::vector<std::unique_ptr<CPDF_TextObject>> m_ClipTextList; - CPDF_TextObject* m_pLastTextObject; - FX_FLOAT m_DefFontSize; - FX_PATHPOINT* m_pPathPoints; - int m_PathPointCount; - int m_PathAllocSize; - FX_FLOAT m_PathStartX; - FX_FLOAT m_PathStartY; - FX_FLOAT m_PathCurrentX; - FX_FLOAT m_PathCurrentY; - uint8_t m_PathClipType; - CFX_ByteString m_LastImageName; - CPDF_Image* m_pLastImage; - CPDF_Dictionary* m_pLastImageDict; - CPDF_Dictionary* m_pLastCloneImageDict; - bool m_bColored; - FX_FLOAT m_Type3Data[6]; - bool m_bResourceMissing; - std::vector<std::unique_ptr<CPDF_AllStates>> m_StateStack; -}; - class CPDF_ContentParser { public: enum ParseStatus { Ready, ToBeContinued, Done }; |