CPDF_ContentParser::Stage CPDF_ContentParser::CheckClip() {
if (m_pType3Char) {
m_pType3Char->InitializeFromStreamData(m_pParser->IsColored(),
m_pParser->GetType3Data());
}
for (auto& pObj : *m_pObjectHolder->GetPageObjectList()) {
if (!pObj->m_ClipPath.HasRef())
continue;
if (pObj->m_ClipPath.GetPathCount() != 1)
continue;
if (pObj->m_ClipPath.GetTextCount() > 0)
continue;
CPDF_Path ClipPath = pObj->m_ClipPath.GetPath(0);
if (!ClipPath.IsRect() || pObj->IsShading())
continue;
CFX_PointF point0 = ClipPath.GetPoint(0);
CFX_PointF point2 = ClipPath.GetPoint(2);
CFX_FloatRect old_rect(point0.x, point0.y, point2.x, point2.y);
if (old_rect.Contains(pObj->GetRect()))
pObj->m_ClipPath.SetNull();
}
return Stage::kComplete;
}
DLLEXPORT FPDF_CLIPPATH STDCALL FPDF_CreateClipPath(float left, float bottom, float right, float top)
{
CPDF_ClipPath* pNewClipPath = FX_NEW CPDF_ClipPath();
pNewClipPath->GetModify();
CPDF_Path Path;
Path.GetModify();
Path.AppendRect(left, bottom, right, top);
pNewClipPath->AppendPath(Path, FXFILL_ALTERNATE, FALSE);
return pNewClipPath;
}
DLLEXPORT FPDF_CLIPPATH STDCALL FPDF_CreateClipPath(float left,
float bottom,
float right,
float top) {
CPDF_Path Path;
Path.AppendRect(left, bottom, right, top);
CPDF_ClipPath* pNewClipPath = new CPDF_ClipPath();
pNewClipPath->AppendPath(Path, FXFILL_ALTERNATE, false);
return pNewClipPath;
}
void CPDF_StreamContentParser::AddForm(CPDF_Stream* pStream) {
if (!m_Options.m_bSeparateForm) {
CPDF_Dictionary* pResources = pStream->GetDict()->GetDict("Resources");
CFX_Matrix form_matrix = pStream->GetDict()->GetMatrix("Matrix");
form_matrix.Concat(m_pCurStates->m_CTM);
CPDF_Array* pBBox = pStream->GetDict()->GetArray("BBox");
CFX_FloatRect form_bbox;
CPDF_Path ClipPath;
if (pBBox) {
form_bbox = pStream->GetDict()->GetRect("BBox");
ClipPath.New();
ClipPath.AppendRect(form_bbox.left, form_bbox.bottom, form_bbox.right,
form_bbox.top);
ClipPath.Transform(&form_matrix);
form_bbox.Transform(&form_matrix);
}
CPDF_StreamContentParser parser(m_pDocument, m_pPageResources, m_pResources,
&m_mtContentToUser, m_pObjectList,
pResources, &form_bbox, &m_Options,
m_pCurStates.get(), m_Level + 1);
parser.m_pCurStates->m_CTM = form_matrix;
if (ClipPath.NotNull()) {
parser.m_pCurStates->m_ClipPath.AppendPath(ClipPath, FXFILL_WINDING,
TRUE);
}
CPDF_StreamAcc stream;
stream.LoadAllData(pStream, FALSE);
if (stream.GetSize() == 0) {
return;
}
parser.Parse(stream.GetData(), stream.GetSize(), 0);
return;
}
CPDF_FormObject* pFormObj = new CPDF_FormObject;
pFormObj->m_pForm =
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, NULL, NULL, &m_Options, m_Level + 1);
if (!m_pObjectList->m_bBackgroundAlphaNeeded &&
pFormObj->m_pForm->m_bBackgroundAlphaNeeded) {
m_pObjectList->m_bBackgroundAlphaNeeded = TRUE;
}
pFormObj->CalcBoundingBox();
SetGraphicStates(pFormObj, TRUE, TRUE, TRUE);
m_pObjectList->m_ObjectList.AddTail(pFormObj);
}
void CPDF_ContentParser::Start(CPDF_Form* pForm,
CPDF_AllStates* pGraphicStates,
const CFX_Matrix* pParentMatrix,
CPDF_Type3Char* pType3Char,
int level) {
m_pType3Char = pType3Char;
m_pObjectHolder = pForm;
m_bForm = true;
CFX_Matrix form_matrix = pForm->m_pFormDict->GetMatrixFor("Matrix");
if (pGraphicStates)
form_matrix.Concat(pGraphicStates->m_CTM);
CPDF_Array* pBBox = pForm->m_pFormDict->GetArrayFor("BBox");
CFX_FloatRect form_bbox;
CPDF_Path ClipPath;
if (pBBox) {
form_bbox = pBBox->GetRect();
ClipPath.Emplace();
ClipPath.AppendRect(form_bbox.left, form_bbox.bottom, form_bbox.right,
form_bbox.top);
ClipPath.Transform(&form_matrix);
if (pParentMatrix)
ClipPath.Transform(pParentMatrix);
form_bbox.Transform(&form_matrix);
if (pParentMatrix)
form_bbox.Transform(pParentMatrix);
}
CPDF_Dictionary* pResources = pForm->m_pFormDict->GetDictFor("Resources");
m_pParser.reset(new CPDF_StreamContentParser(
pForm->m_pDocument, pForm->m_pPageResources, pForm->m_pResources,
pParentMatrix, pForm, pResources, &form_bbox, pGraphicStates, level));
m_pParser->GetCurStates()->m_CTM = form_matrix;
m_pParser->GetCurStates()->m_ParentMatrix = form_matrix;
if (ClipPath) {
m_pParser->GetCurStates()->m_ClipPath.AppendPath(ClipPath, FXFILL_WINDING,
true);
}
if (pForm->m_Transparency & PDFTRANS_GROUP) {
CPDF_GeneralState* pState = &m_pParser->GetCurStates()->m_GeneralState;
pState->SetBlendType(FXDIB_BLEND_NORMAL);
pState->SetStrokeAlpha(1.0f);
pState->SetFillAlpha(1.0f);
pState->SetSoftMask(nullptr);
}
m_nStreams = 0;
m_pSingleStream.reset(new CPDF_StreamAcc);
m_pSingleStream->LoadAllData(pForm->m_pFormStream, false);
m_pData = (uint8_t*)m_pSingleStream->GetData();
m_Size = m_pSingleStream->GetSize();
m_Status = ToBeContinued;
m_InternalStage = STAGE_PARSE;
m_CurrentOffset = 0;
}
FPDF_EXPORT FPDF_CLIPPATH FPDF_CALLCONV FPDF_CreateClipPath(float left,
float bottom,
float right,
float top) {
CPDF_Path Path;
Path.AppendRect(left, bottom, right, top);
auto pNewClipPath = pdfium::MakeUnique<CPDF_ClipPath>();
pNewClipPath->AppendPath(Path, FXFILL_ALTERNATE, false);
// Caller takes ownership.
return FPDFClipPathFromCPDFClipPath(pNewClipPath.release());
}
FPDF_EXPORT void FPDF_CALLCONV FPDFPage_InsertClipPath(FPDF_PAGE page,
FPDF_CLIPPATH clipPath) {
CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
if (!pPage)
return;
CPDF_Dictionary* pPageDict = pPage->GetDict();
CPDF_Object* pContentObj = GetPageContent(pPageDict);
if (!pContentObj)
return;
std::ostringstream strClip;
CPDF_ClipPath* pClipPath = CPDFClipPathFromFPDFClipPath(clipPath);
for (size_t i = 0; i < pClipPath->GetPathCount(); ++i) {
CPDF_Path path = pClipPath->GetPath(i);
if (path.GetPoints().empty()) {
// Empty clipping (totally clipped out)
strClip << "0 0 m W n ";
} else {
OutputPath(strClip, path);
if (pClipPath->GetClipType(i) == FXFILL_WINDING)
strClip << "W n\n";
else
strClip << "W* n\n";
}
}
CPDF_Document* pDoc = pPage->GetDocument();
if (!pDoc)
return;
CPDF_Stream* pStream =
pDoc->NewIndirect<CPDF_Stream>(nullptr, 0, pDoc->New<CPDF_Dictionary>());
pStream->SetDataFromStringstream(&strClip);
if (CPDF_Array* pArray = ToArray(pContentObj)) {
pArray->InsertAt(0, pStream->MakeReference(pDoc));
} else if (pContentObj->IsStream() && !pContentObj->IsInline()) {
CPDF_Array* pContentArray = pDoc->NewIndirect<CPDF_Array>();
pContentArray->Add(pStream->MakeReference(pDoc));
pContentArray->Add(pContentObj->MakeReference(pDoc));
pPageDict->SetFor(pdfium::page_object::kContents,
pContentArray->MakeReference(pDoc));
}
}
void CPDF_StreamContentParser::AddPathObject(int FillType, FX_BOOL bStroke) {
int PathPointCount = m_PathPointCount, PathClipType = m_PathClipType;
m_PathPointCount = 0;
m_PathClipType = 0;
if (PathPointCount <= 1) {
if (PathPointCount && PathClipType) {
CPDF_Path path;
path.New()->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;
CFX_PathData* pPathData = Path.New();
pPathData->SetPointCount(PathPointCount);
FXSYS_memcpy(pPathData->GetPoints(), m_pPathPoints,
sizeof(FX_PATHPOINT) * PathPointCount);
CFX_Matrix matrix = m_pCurStates->m_CTM;
matrix.Concat(m_mtContentToUser);
if (bStroke || FillType) {
CPDF_PathObject* pPathObj = new CPDF_PathObject;
pPathObj->m_bStroke = bStroke;
pPathObj->m_FillType = FillType;
pPathObj->m_Path = Path;
pPathObj->m_Matrix = matrix;
SetGraphicStates(pPathObj, TRUE, FALSE, TRUE);
pPathObj->CalcBoundingBox();
m_pObjectList->m_ObjectList.AddTail(pPathObj);
}
if (PathClipType) {
if (!matrix.IsIdentity()) {
Path.Transform(&matrix);
matrix.SetIdentity();
}
m_pCurStates->m_ClipPath.AppendPath(Path, PathClipType, TRUE);
}
}
void CPDF_ClipPath::AppendPath(CPDF_Path path, uint8_t type, bool bAutoMerge) {
PathData* pData = m_Ref.GetPrivateCopy();
if (!pData->m_PathAndTypeList.empty() && bAutoMerge) {
const CPDF_Path& old_path = pData->m_PathAndTypeList.back().first;
if (old_path.IsRect()) {
CFX_FloatRect old_rect(old_path.GetPointX(0), old_path.GetPointY(0),
old_path.GetPointX(2), old_path.GetPointY(2));
CFX_FloatRect new_rect = path.GetBoundingBox();
if (old_rect.Contains(new_rect))
pData->m_PathAndTypeList.pop_back();
}
}
pData->m_PathAndTypeList.push_back(std::make_pair(path, type));
}
void OutputPath(CFX_ByteTextBuf& buf, CPDF_Path path) {
const CFX_PathData* pPathData = path.GetObject();
if (!pPathData)
return;
FX_PATHPOINT* pPoints = pPathData->GetPoints();
if (path.IsRect()) {
buf << (pPoints[0].m_PointX) << " " << (pPoints[0].m_PointY) << " "
<< (pPoints[2].m_PointX - pPoints[0].m_PointX) << " "
<< (pPoints[2].m_PointY - pPoints[0].m_PointY) << " re\n";
return;
}
CFX_ByteString temp;
for (int i = 0; i < pPathData->GetPointCount(); i++) {
buf << (pPoints[i].m_PointX) << " " << (pPoints[i].m_PointY);
int point_type = pPoints[i].m_Flag & FXPT_TYPE;
if (point_type == FXPT_MOVETO) {
buf << " m\n";
} else if (point_type == FXPT_BEZIERTO) {
buf << " " << (pPoints[i + 1].m_PointX) << " "
<< (pPoints[i + 1].m_PointY) << " " << (pPoints[i + 2].m_PointX)
<< " " << (pPoints[i + 2].m_PointY);
if (pPoints[i + 2].m_Flag & FXPT_CLOSEFIGURE)
buf << " c h\n";
else
buf << " c\n";
i += 2;
} else if (point_type == FXPT_LINETO) {
if (pPoints[i].m_Flag & FXPT_CLOSEFIGURE)
buf << " l h\n";
else
buf << " l\n";
}
}
}
void OutputPath(std::ostringstream& buf, CPDF_Path path) {
const CFX_PathData* pPathData = path.GetObject();
if (!pPathData)
return;
const std::vector<FX_PATHPOINT>& pPoints = pPathData->GetPoints();
if (path.IsRect()) {
CFX_PointF diff = pPoints[2].m_Point - pPoints[0].m_Point;
buf << pPoints[0].m_Point.x << " " << pPoints[0].m_Point.y << " " << diff.x
<< " " << diff.y << " re\n";
return;
}
ByteString temp;
for (size_t i = 0; i < pPoints.size(); i++) {
buf << pPoints[i].m_Point.x << " " << pPoints[i].m_Point.y;
FXPT_TYPE point_type = pPoints[i].m_Type;
if (point_type == FXPT_TYPE::MoveTo) {
buf << " m\n";
} else if (point_type == FXPT_TYPE::BezierTo) {
buf << " " << pPoints[i + 1].m_Point.x << " " << pPoints[i + 1].m_Point.y
<< " " << pPoints[i + 2].m_Point.x << " " << pPoints[i + 2].m_Point.y;
buf << " c";
if (pPoints[i + 2].m_CloseFigure)
buf << " h";
buf << "\n";
i += 2;
} else if (point_type == FXPT_TYPE::LineTo) {
buf << " l";
if (pPoints[i].m_CloseFigure)
buf << " h";
buf << "\n";
}
}
}
CPDF_ContentParser::CPDF_ContentParser(CPDF_Form* pForm,
CPDF_AllStates* pGraphicStates,
const CFX_Matrix* pParentMatrix,
CPDF_Type3Char* pType3Char,
std::set<const uint8_t*>* parsedSet)
: m_CurrentStage(Stage::kParse),
m_pObjectHolder(pForm),
m_pType3Char(pType3Char) {
ASSERT(pForm);
CFX_Matrix form_matrix = pForm->GetDict()->GetMatrixFor("Matrix");
if (pGraphicStates)
form_matrix.Concat(pGraphicStates->m_CTM);
CPDF_Array* pBBox = pForm->GetDict()->GetArrayFor("BBox");
CFX_FloatRect form_bbox;
CPDF_Path ClipPath;
if (pBBox) {
form_bbox = pBBox->GetRect();
ClipPath.Emplace();
ClipPath.AppendRect(form_bbox.left, form_bbox.bottom, form_bbox.right,
form_bbox.top);
ClipPath.Transform(form_matrix);
if (pParentMatrix)
ClipPath.Transform(*pParentMatrix);
form_bbox = form_matrix.TransformRect(form_bbox);
if (pParentMatrix)
form_bbox = pParentMatrix->TransformRect(form_bbox);
}
CPDF_Dictionary* pResources = pForm->GetDict()->GetDictFor("Resources");
m_pParser = pdfium::MakeUnique<CPDF_StreamContentParser>(
pForm->GetDocument(), pForm->m_pPageResources.Get(),
pForm->m_pResources.Get(), pParentMatrix, pForm, pResources, form_bbox,
pGraphicStates, parsedSet);
m_pParser->GetCurStates()->m_CTM = form_matrix;
m_pParser->GetCurStates()->m_ParentMatrix = form_matrix;
if (ClipPath.HasRef()) {
m_pParser->GetCurStates()->m_ClipPath.AppendPath(ClipPath, FXFILL_WINDING,
true);
}
if (pForm->GetTransparency().IsGroup()) {
CPDF_GeneralState* pState = &m_pParser->GetCurStates()->m_GeneralState;
pState->SetBlendType(BlendMode::kNormal);
pState->SetStrokeAlpha(1.0f);
pState->SetFillAlpha(1.0f);
pState->SetSoftMask(nullptr);
}
m_pSingleStream = pdfium::MakeRetain<CPDF_StreamAcc>(pForm->GetStream());
m_pSingleStream->LoadAllDataFiltered();
m_pData.Reset(m_pSingleStream->GetData());
m_Size = m_pSingleStream->GetSize();
}
void CPDF_ContentParser::Start(CPDF_Form* pForm, CPDF_AllStates* pGraphicStates, CFX_AffineMatrix* pParentMatrix,
CPDF_Type3Char* pType3Char, CPDF_ParseOptions* pOptions, int level)
{
m_pType3Char = pType3Char;
m_pObjects = pForm;
m_bForm = TRUE;
CFX_AffineMatrix form_matrix = pForm->m_pFormDict->GetMatrix(FX_BSTRC("Matrix"));
if (pGraphicStates) {
form_matrix.Concat(pGraphicStates->m_CTM);
}
CPDF_Array* pBBox = pForm->m_pFormDict->GetArray(FX_BSTRC("BBox"));
CFX_FloatRect form_bbox;
CPDF_Path ClipPath;
if (pBBox) {
form_bbox = pBBox->GetRect();
ClipPath.New();
ClipPath.AppendRect(form_bbox.left, form_bbox.bottom, form_bbox.right, form_bbox.top);
ClipPath.Transform(&form_matrix);
if (pParentMatrix) {
ClipPath.Transform(pParentMatrix);
}
form_bbox.Transform(&form_matrix);
}
CPDF_Dictionary* pResources = pForm->m_pFormDict->GetDict(FX_BSTRC("Resources"));
m_pParser = FX_NEW CPDF_StreamContentParser;
m_pParser->Initialize();
m_pParser->PrepareParse(pForm->m_pDocument, pForm->m_pPageResources, pForm->m_pResources, pParentMatrix, pForm,
pResources, &form_bbox, pOptions, pGraphicStates, level);
m_pParser->m_pCurStates->m_CTM = form_matrix;
if (ClipPath.NotNull()) {
m_pParser->m_pCurStates->m_ClipPath.AppendPath(ClipPath, FXFILL_WINDING, TRUE);
}
if (pForm->m_Transparency & PDFTRANS_GROUP) {
CPDF_GeneralStateData* pData = m_pParser->m_pCurStates->m_GeneralState.GetModify();
pData->m_BlendType = FXDIB_BLEND_NORMAL;
pData->m_StrokeAlpha = 1.0f;
pData->m_FillAlpha = 1.0f;
pData->m_pSoftMask = NULL;
}
m_pStreamFilter = pForm->m_pFormStream->GetStreamFilter();
m_nStreams = 1;
m_Status = ToBeContinued;
m_InternalStage = PAGEPARSE_STAGE_PARSE;
m_CurrentOffset = 0;
}
DLLEXPORT void STDCALL FPDFPage_InsertClipPath(FPDF_PAGE page,FPDF_CLIPPATH clipPath)
{
if(!page)
return;
CPDF_Page* pPage = (CPDF_Page*)page;
CPDF_Dictionary* pPageDic = pPage->m_pFormDict;
CPDF_Object* pContentObj = pPageDic->GetElement("Contents");
if(!pContentObj)
pContentObj = pPageDic->GetArray("Contents");
if(!pContentObj)
return;
CFX_ByteTextBuf strClip;
CPDF_ClipPath* pClipPath = (CPDF_ClipPath*)clipPath;
FX_DWORD i;
for (i = 0; i < pClipPath->GetPathCount(); i ++) {
CPDF_Path path = pClipPath->GetPath(i);
int iClipType = pClipPath->GetClipType(i);
if (path.GetPointCount() == 0) {
// Empty clipping (totally clipped out)
strClip << "0 0 m W n ";
} else {
OutputPath(strClip, path);
if (iClipType == FXFILL_WINDING)
strClip << "W n\n";
else
strClip << "W* n\n";
}
}
CPDF_Dictionary* pDic = FX_NEW CPDF_Dictionary;
CPDF_Stream* pStream = FX_NEW CPDF_Stream(NULL,0, pDic);
pStream->SetData(strClip.GetBuffer(), strClip.GetSize(), FALSE, FALSE);
CPDF_Document* pDoc = pPage->m_pDocument;
if(!pDoc)
return;
pDoc->AddIndirectObject(pStream);
CPDF_Array* pContentArray = NULL;
if (pContentObj && pContentObj->GetType() == PDFOBJ_ARRAY)
{
pContentArray = (CPDF_Array*)pContentObj;
CPDF_Reference* pRef = FX_NEW CPDF_Reference(pDoc, pStream->GetObjNum());
pContentArray->InsertAt(0, pRef);
}
else if(pContentObj && pContentObj->GetType() == PDFOBJ_REFERENCE)
{
CPDF_Reference* pReference = (CPDF_Reference*)pContentObj;
CPDF_Object* pDirectObj = pReference->GetDirect();
if(pDirectObj != NULL)
{
if(pDirectObj->GetType() == PDFOBJ_ARRAY)
{
pContentArray = (CPDF_Array*)pDirectObj;
CPDF_Reference* pRef = FX_NEW CPDF_Reference(pDoc, pStream->GetObjNum());
pContentArray->InsertAt(0, pRef);
}
else if(pDirectObj->GetType() == PDFOBJ_STREAM)
{
pContentArray = FX_NEW CPDF_Array();
pContentArray->AddReference(pDoc,pStream->GetObjNum());
pContentArray->AddReference(pDoc,pDirectObj->GetObjNum());
pPageDic->SetAtReference("Contents", pDoc, pDoc->AddIndirectObject(pContentArray));
}
}
}
}
DLLEXPORT void STDCALL FPDFPage_InsertClipPath(FPDF_PAGE page,
FPDF_CLIPPATH clipPath) {
CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
if (!pPage)
return;
CPDF_Dictionary* pPageDic = pPage->m_pFormDict;
CPDF_Object* pContentObj =
pPageDic ? pPageDic->GetElement("Contents") : nullptr;
if (!pContentObj)
pContentObj = pPageDic ? pPageDic->GetArrayBy("Contents") : nullptr;
if (!pContentObj)
return;
CFX_ByteTextBuf strClip;
CPDF_ClipPath* pClipPath = (CPDF_ClipPath*)clipPath;
FX_DWORD i;
for (i = 0; i < pClipPath->GetPathCount(); i++) {
CPDF_Path path = pClipPath->GetPath(i);
int iClipType = pClipPath->GetClipType(i);
if (path.GetPointCount() == 0) {
// Empty clipping (totally clipped out)
strClip << "0 0 m W n ";
} else {
OutputPath(strClip, path);
if (iClipType == FXFILL_WINDING)
strClip << "W n\n";
else
strClip << "W* n\n";
}
}
CPDF_Dictionary* pDic = new CPDF_Dictionary;
CPDF_Stream* pStream = new CPDF_Stream(nullptr, 0, pDic);
pStream->SetData(strClip.GetBuffer(), strClip.GetSize(), FALSE, FALSE);
CPDF_Document* pDoc = pPage->m_pDocument;
if (!pDoc)
return;
pDoc->AddIndirectObject(pStream);
CPDF_Array* pContentArray = nullptr;
if (CPDF_Array* pArray = ToArray(pContentObj)) {
pContentArray = pArray;
CPDF_Reference* pRef = new CPDF_Reference(pDoc, pStream->GetObjNum());
pContentArray->InsertAt(0, pRef);
} else if (CPDF_Reference* pReference = ToReference(pContentObj)) {
CPDF_Object* pDirectObj = pReference->GetDirect();
if (pDirectObj) {
if (CPDF_Array* pArray = pDirectObj->AsArray()) {
pContentArray = pArray;
CPDF_Reference* pRef = new CPDF_Reference(pDoc, pStream->GetObjNum());
pContentArray->InsertAt(0, pRef);
} else if (pDirectObj->IsStream()) {
pContentArray = new CPDF_Array();
pContentArray->AddReference(pDoc, pStream->GetObjNum());
pContentArray->AddReference(pDoc, pDirectObj->GetObjNum());
pPageDic->SetAtReference("Contents", pDoc,
pDoc->AddIndirectObject(pContentArray));
}
}
}
}
void CPDF_ContentParser::Continue(IFX_Pause* pPause)
{
while (m_Status == ToBeContinued) {
if (m_InternalStage == PAGEPARSE_STAGE_PARSE) {
if (m_pStreamFilter == NULL) {
if (m_CurrentOffset == m_nStreams) {
m_InternalStage = PAGEPARSE_STAGE_CHECKCLIP;
if (m_pType3Char) {
m_pType3Char->m_bColored = m_pParser->m_bColored;
m_pType3Char->m_Width = FXSYS_round(m_pParser->m_Type3Data[0] * 1000);
m_pType3Char->m_BBox.left = FXSYS_round(m_pParser->m_Type3Data[2] * 1000);
m_pType3Char->m_BBox.bottom = FXSYS_round(m_pParser->m_Type3Data[3] * 1000);
m_pType3Char->m_BBox.right = FXSYS_round(m_pParser->m_Type3Data[4] * 1000);
m_pType3Char->m_BBox.top = FXSYS_round(m_pParser->m_Type3Data[5] * 1000);
m_pType3Char->m_bPageRequired = m_pParser->m_bResourceMissing;
}
delete m_pParser;
m_pParser = NULL;
continue;
}
CPDF_Object* pContent = m_pObjects->m_pFormDict->GetElementValue(FX_BSTRC("Contents"));
if (pContent->GetType() == PDFOBJ_STREAM) {
m_pStreamFilter = ((CPDF_Stream*)pContent)->GetStreamFilter();
} else {
CPDF_Stream* pStream = ((CPDF_Array*)pContent)->GetStream(m_CurrentOffset);
if (pStream == NULL) {
m_CurrentOffset ++;
continue;
}
m_pStreamFilter = pStream->GetStreamFilter();
}
}
FX_DWORD len = m_pStreamFilter->ReadBlock(m_pParser->m_pStreamBuf, STREAM_PARSE_BUFSIZE);
m_pParser->InputData(m_pParser->m_pStreamBuf, len);
if (m_pParser->m_bAbort) {
delete m_pStreamFilter;
m_pStreamFilter = NULL;
m_Status = Done;
delete m_pParser;
m_pParser = NULL;
return;
}
if (len < STREAM_PARSE_BUFSIZE) {
m_pParser->Finish();
m_CurrentOffset ++;
delete m_pStreamFilter;
m_pStreamFilter = NULL;
}
if (pPause && pPause->NeedToPauseNow()) {
return;
}
}
if (m_InternalStage == PAGEPARSE_STAGE_CHECKCLIP) {
FX_POSITION pos = m_pObjects->m_ObjectList.GetHeadPosition();
while (pos) {
CPDF_PageObject* pObj = (CPDF_PageObject*)m_pObjects->m_ObjectList.GetNext(pos);
if (pObj == NULL) {
continue;
}
if (pObj->m_ClipPath.IsNull()) {
continue;
}
if (pObj->m_ClipPath.GetPathCount() != 1) {
continue;
}
if (pObj->m_ClipPath.GetTextCount()) {
continue;
}
CPDF_Path ClipPath = pObj->m_ClipPath.GetPath(0);
if (!ClipPath.IsRect() || pObj->m_Type == PDFPAGE_SHADING) {
continue;
}
CFX_FloatRect old_rect(ClipPath.GetPointX(0), ClipPath.GetPointY(0),
ClipPath.GetPointX(2), ClipPath.GetPointY(2));
CFX_FloatRect obj_rect(pObj->m_Left, pObj->m_Bottom, pObj->m_Right, pObj->m_Top);
if (old_rect.Contains(obj_rect)) {
pObj->m_ClipPath.SetNull();
}
}
if (m_pObjects->m_ObjectList.GetCount() == 1) {
CPDF_PageObject* pObj = (CPDF_PageObject*)m_pObjects->m_ObjectList.GetAt(m_pObjects->m_ObjectList.GetHeadPosition());
if (pObj && pObj->m_Type == PDFPAGE_TEXT) {
CPDF_TextObject* pText = (CPDF_TextObject*)pObj;
}
}
m_Status = Done;
return;
}
}
}
DLLEXPORT void STDCALL FPDFPage_InsertClipPath(FPDF_PAGE page,
FPDF_CLIPPATH clipPath) {
CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
if (!pPage)
return;
CPDF_Dictionary* pPageDic = pPage->m_pFormDict;
CPDF_Object* pContentObj =
pPageDic ? pPageDic->GetObjectFor("Contents") : nullptr;
if (!pContentObj)
pContentObj = pPageDic ? pPageDic->GetArrayFor("Contents") : nullptr;
if (!pContentObj)
return;
CFX_ByteTextBuf strClip;
CPDF_ClipPath* pClipPath = (CPDF_ClipPath*)clipPath;
uint32_t i;
for (i = 0; i < pClipPath->GetPathCount(); i++) {
CPDF_Path path = pClipPath->GetPath(i);
int iClipType = pClipPath->GetClipType(i);
if (path.GetPoints().empty()) {
// Empty clipping (totally clipped out)
strClip << "0 0 m W n ";
} else {
OutputPath(strClip, path);
if (iClipType == FXFILL_WINDING)
strClip << "W n\n";
else
strClip << "W* n\n";
}
}
CPDF_Document* pDoc = pPage->m_pDocument;
if (!pDoc)
return;
CPDF_Stream* pStream = pDoc->NewIndirect<CPDF_Stream>(
nullptr, 0,
pdfium::MakeUnique<CPDF_Dictionary>(pDoc->GetByteStringPool()));
pStream->SetData(strClip.GetBuffer(), strClip.GetSize());
CPDF_Array* pArray = ToArray(pContentObj);
if (pArray) {
pArray->InsertNewAt<CPDF_Reference>(0, pDoc, pStream->GetObjNum());
return;
}
CPDF_Reference* pReference = ToReference(pContentObj);
if (!pReference)
return;
CPDF_Object* pDirectObj = pReference->GetDirect();
if (!pDirectObj)
return;
CPDF_Array* pObjArray = pDirectObj->AsArray();
if (pObjArray) {
pObjArray->InsertNewAt<CPDF_Reference>(0, pDoc, pStream->GetObjNum());
return;
}
if (pDirectObj->IsStream()) {
CPDF_Array* pContentArray = pDoc->NewIndirect<CPDF_Array>();
pContentArray->AddNew<CPDF_Reference>(pDoc, pStream->GetObjNum());
pContentArray->AddNew<CPDF_Reference>(pDoc, pDirectObj->GetObjNum());
pPageDic->SetNewFor<CPDF_Reference>("Contents", pDoc,
pContentArray->GetObjNum());
}
}
void CPDF_ContentParser::Continue(IFX_Pause* pPause) {
int steps = 0;
while (m_Status == ToBeContinued) {
if (m_InternalStage == STAGE_GETCONTENT) {
if (m_CurrentOffset == m_nStreams) {
if (!m_StreamArray.empty()) {
FX_SAFE_UINT32 safeSize = 0;
for (const auto& stream : m_StreamArray) {
safeSize += stream->GetSize();
safeSize += 1;
}
if (!safeSize.IsValid()) {
m_Status = Done;
return;
}
m_Size = safeSize.ValueOrDie();
m_pData = FX_Alloc(uint8_t, m_Size);
uint32_t pos = 0;
for (const auto& stream : m_StreamArray) {
FXSYS_memcpy(m_pData + pos, stream->GetData(), stream->GetSize());
pos += stream->GetSize();
m_pData[pos++] = ' ';
}
m_StreamArray.clear();
} else {
m_pData = (uint8_t*)m_pSingleStream->GetData();
m_Size = m_pSingleStream->GetSize();
}
m_InternalStage = STAGE_PARSE;
m_CurrentOffset = 0;
} else {
CPDF_Array* pContent =
m_pObjectHolder->m_pFormDict->GetArrayFor("Contents");
m_StreamArray[m_CurrentOffset].reset(new CPDF_StreamAcc);
CPDF_Stream* pStreamObj = ToStream(
pContent ? pContent->GetDirectObjectAt(m_CurrentOffset) : nullptr);
m_StreamArray[m_CurrentOffset]->LoadAllData(pStreamObj, false);
m_CurrentOffset++;
}
}
if (m_InternalStage == STAGE_PARSE) {
if (!m_pParser) {
m_pParser.reset(new CPDF_StreamContentParser(
m_pObjectHolder->m_pDocument, m_pObjectHolder->m_pPageResources,
nullptr, nullptr, m_pObjectHolder, m_pObjectHolder->m_pResources,
&m_pObjectHolder->m_BBox, nullptr, 0));
m_pParser->GetCurStates()->m_ColorState.SetDefault();
}
if (m_CurrentOffset >= m_Size) {
m_InternalStage = STAGE_CHECKCLIP;
} else {
m_CurrentOffset +=
m_pParser->Parse(m_pData + m_CurrentOffset,
m_Size - m_CurrentOffset, PARSE_STEP_LIMIT);
}
}
if (m_InternalStage == STAGE_CHECKCLIP) {
if (m_pType3Char) {
m_pType3Char->m_bColored = m_pParser->IsColored();
m_pType3Char->m_Width =
FXSYS_round(m_pParser->GetType3Data()[0] * 1000);
m_pType3Char->m_BBox.left =
FXSYS_round(m_pParser->GetType3Data()[2] * 1000);
m_pType3Char->m_BBox.bottom =
FXSYS_round(m_pParser->GetType3Data()[3] * 1000);
m_pType3Char->m_BBox.right =
FXSYS_round(m_pParser->GetType3Data()[4] * 1000);
m_pType3Char->m_BBox.top =
FXSYS_round(m_pParser->GetType3Data()[5] * 1000);
}
for (auto& pObj : *m_pObjectHolder->GetPageObjectList()) {
if (!pObj->m_ClipPath)
continue;
if (pObj->m_ClipPath.GetPathCount() != 1)
continue;
if (pObj->m_ClipPath.GetTextCount())
continue;
CPDF_Path ClipPath = pObj->m_ClipPath.GetPath(0);
if (!ClipPath.IsRect() || pObj->IsShading())
continue;
CFX_FloatRect old_rect(ClipPath.GetPointX(0), ClipPath.GetPointY(0),
ClipPath.GetPointX(2), ClipPath.GetPointY(2));
CFX_FloatRect obj_rect(pObj->m_Left, pObj->m_Bottom, pObj->m_Right,
pObj->m_Top);
if (old_rect.Contains(obj_rect))
pObj->m_ClipPath.SetNull();
}
m_Status = Done;
return;
}
steps++;
if (pPause && pPause->NeedToPauseNow())
break;
}
}
