| //======================================================================== |
| // |
| // Gfx.h |
| // |
| // Copyright 1996-2003 Glyph & Cog, LLC |
| // |
| //======================================================================== |
| |
| //======================================================================== |
| // |
| // Modified under the Poppler project - http://poppler.freedesktop.org |
| // |
| // All changes made under the Poppler project to this file are licensed |
| // under GPL version 2 or later |
| // |
| // Copyright (C) 2005 Jonathan Blandford <jrb@redhat.com> |
| // Copyright (C) 2007 Iñigo Martínez <inigomartinez@gmail.com> |
| // Copyright (C) 2008 Brad Hards <bradh@kde.org> |
| // Copyright (C) 2008, 2010 Carlos Garcia Campos <carlosgc@gnome.org> |
| // Copyright (C) 2009-2013, 2017 Albert Astals Cid <aacid@kde.org> |
| // Copyright (C) 2009, 2010, 2012, 2013 Thomas Freitag <Thomas.Freitag@alfa.de> |
| // Copyright (C) 2010 David Benjamin <davidben@mit.edu> |
| // Copyright (C) 2010 Christian Feuersänger <cfeuersaenger@googlemail.com> |
| // Copyright (C) 2013 Fabio D'Urso <fabiodurso@hotmail.it> |
| // |
| // To see a description of the changes please see the Changelog file that |
| // came with your tarball or type make ChangeLog if you are building from git |
| // |
| //======================================================================== |
| |
| #ifndef GFX_H |
| #define GFX_H |
| |
| #ifdef USE_GCC_PRAGMAS |
| #pragma interface |
| #endif |
| |
| #include "poppler-config.h" |
| #include "goo/gtypes.h" |
| #include "goo/GooList.h" |
| #include "GfxState.h" |
| #include "Object.h" |
| #include "PopplerCache.h" |
| |
| #include <vector> |
| |
| class GooString; |
| class PDFDoc; |
| class XRef; |
| class Array; |
| class Stream; |
| class Parser; |
| class Dict; |
| class Function; |
| class OutputDev; |
| class GfxFontDict; |
| class GfxFont; |
| class GfxPattern; |
| class GfxTilingPattern; |
| class GfxShadingPattern; |
| class GfxShading; |
| class GfxFunctionShading; |
| class GfxAxialShading; |
| class GfxRadialShading; |
| class GfxGouraudTriangleShading; |
| class GfxPatchMeshShading; |
| struct GfxPatch; |
| class GfxState; |
| struct GfxColor; |
| class GfxColorSpace; |
| class Gfx; |
| class PDFRectangle; |
| class AnnotBorder; |
| class AnnotColor; |
| class Catalog; |
| struct MarkedContentStack; |
| |
| //------------------------------------------------------------------------ |
| |
| enum GfxClipType { |
| clipNone, |
| clipNormal, |
| clipEO |
| }; |
| |
| enum TchkType { |
| tchkBool, // boolean |
| tchkInt, // integer |
| tchkNum, // number (integer or real) |
| tchkString, // string |
| tchkName, // name |
| tchkArray, // array |
| tchkProps, // properties (dictionary or name) |
| tchkSCN, // scn/SCN args (number of name) |
| tchkNone // used to avoid empty initializer lists |
| }; |
| |
| #define maxArgs 33 |
| |
| struct Operator { |
| char name[4]; |
| int numArgs; |
| TchkType tchk[maxArgs]; |
| void (Gfx::*func)(Object args[], int numArgs); |
| }; |
| |
| //------------------------------------------------------------------------ |
| |
| class GfxResources { |
| public: |
| |
| GfxResources(XRef *xref, Dict *resDict, GfxResources *nextA); |
| ~GfxResources(); |
| |
| GfxFont *lookupFont(char *name); |
| Object lookupXObject(char *name); |
| Object lookupXObjectNF(char *name); |
| Object lookupMarkedContentNF(char *name); |
| Object lookupColorSpace(const char *name); |
| GfxPattern *lookupPattern(char *name, OutputDev *out, GfxState *state); |
| GfxShading *lookupShading(char *name, OutputDev *out, GfxState *state); |
| Object lookupGState(char *name); |
| Object lookupGStateNF(char *name); |
| |
| GfxResources *getNext() { return next; } |
| |
| private: |
| |
| GfxFontDict *fonts; |
| Object xObjDict; |
| Object colorSpaceDict; |
| Object patternDict; |
| Object shadingDict; |
| Object gStateDict; |
| PopplerObjectCache gStateCache; |
| Object propertiesDict; |
| GfxResources *next; |
| }; |
| |
| //------------------------------------------------------------------------ |
| // Gfx |
| //------------------------------------------------------------------------ |
| |
| class Gfx { |
| public: |
| |
| // Constructor for regular output. |
| Gfx(PDFDoc *docA, OutputDev *outA, int pageNum, Dict *resDict, |
| double hDPI, double vDPI, PDFRectangle *box, |
| PDFRectangle *cropBox, int rotate, |
| GBool (*abortCheckCbkA)(void *data) = NULL, |
| void *abortCheckCbkDataA = NULL, XRef *xrefA = NULL); |
| |
| // Constructor for a sub-page object. |
| Gfx(PDFDoc *docA, OutputDev *outA, Dict *resDict, |
| PDFRectangle *box, PDFRectangle *cropBox, |
| GBool (*abortCheckCbkA)(void *data) = NULL, |
| void *abortCheckCbkDataA = NULL, XRef *xrefA = NULL); |
| #ifdef USE_CMS |
| void initDisplayProfile(); |
| #endif |
| ~Gfx(); |
| |
| XRef *getXRef() { return xref; } |
| |
| // Interpret a stream or array of streams. |
| void display(Object *obj, GBool topLevel = gTrue); |
| |
| // Display an annotation, given its appearance (a Form XObject), |
| // border style, and bounding box (in default user space). |
| void drawAnnot(Object *str, AnnotBorder *border, AnnotColor *aColor, |
| double xMin, double yMin, double xMax, double yMax, int rotate); |
| |
| // Save graphics state. |
| void saveState(); |
| |
| // Push a new state guard |
| void pushStateGuard(); |
| |
| // Restore graphics state. |
| void restoreState(); |
| |
| // Pop to state guard and pop guard |
| void popStateGuard(); |
| |
| // Get the current graphics state object. |
| GfxState *getState() { return state; } |
| |
| GBool checkTransparencyGroup(Dict *resDict); |
| |
| void drawForm(Object *str, Dict *resDict, double *matrix, double *bbox, |
| GBool transpGroup = gFalse, GBool softMask = gFalse, |
| GfxColorSpace *blendingColorSpace = NULL, |
| GBool isolated = gFalse, GBool knockout = gFalse, |
| GBool alpha = gFalse, Function *transferFunc = NULL, |
| GfxColor *backdropColor = NULL); |
| |
| void pushResources(Dict *resDict); |
| void popResources(); |
| |
| private: |
| |
| PDFDoc *doc; |
| XRef *xref; // the xref table for this PDF file |
| Catalog *catalog; // the Catalog for this PDF file |
| OutputDev *out; // output device |
| GBool subPage; // is this a sub-page object? |
| GBool printCommands; // print the drawing commands (for debugging) |
| GBool profileCommands; // profile the drawing commands (for debugging) |
| GBool commandAborted; // did the previous command abort the drawing? |
| GfxResources *res; // resource stack |
| int updateLevel; |
| |
| GfxState *state; // current graphics state |
| int stackHeight; // the height of the current graphics stack |
| std::vector<int> stateGuards; // a stack of state limits; to guard against unmatched pops |
| GBool fontChanged; // set if font or text matrix has changed |
| GfxClipType clip; // do a clip? |
| int ignoreUndef; // current BX/EX nesting level |
| double baseMatrix[6]; // default matrix for most recent |
| // page/form/pattern |
| int formDepth; |
| GBool ocState; // true if drawing is enabled, false if |
| // disabled |
| |
| MarkedContentStack *mcStack; // current BMC/EMC stack |
| |
| Parser *parser; // parser for page content stream(s) |
| |
| std::set<int> formsDrawing; // the forms that are being drawn |
| std::set<int> charProcDrawing; // the charProc that are being drawn |
| |
| GBool // callback to check for an abort |
| (*abortCheckCbk)(void *data); |
| void *abortCheckCbkData; |
| |
| static Operator opTab[]; // table of operators |
| |
| void go(GBool topLevel); |
| void execOp(Object *cmd, Object args[], int numArgs); |
| Operator *findOp(char *name); |
| GBool checkArg(Object *arg, TchkType type); |
| Goffset getPos(); |
| |
| int bottomGuard(); |
| |
| // graphics state operators |
| void opSave(Object args[], int numArgs); |
| void opRestore(Object args[], int numArgs); |
| void opConcat(Object args[], int numArgs); |
| void opSetDash(Object args[], int numArgs); |
| void opSetFlat(Object args[], int numArgs); |
| void opSetLineJoin(Object args[], int numArgs); |
| void opSetLineCap(Object args[], int numArgs); |
| void opSetMiterLimit(Object args[], int numArgs); |
| void opSetLineWidth(Object args[], int numArgs); |
| void opSetExtGState(Object args[], int numArgs); |
| void doSoftMask(Object *str, GBool alpha, |
| GfxColorSpace *blendingColorSpace, |
| GBool isolated, GBool knockout, |
| Function *transferFunc, GfxColor *backdropColor); |
| void opSetRenderingIntent(Object args[], int numArgs); |
| |
| // color operators |
| void opSetFillGray(Object args[], int numArgs); |
| void opSetStrokeGray(Object args[], int numArgs); |
| void opSetFillCMYKColor(Object args[], int numArgs); |
| void opSetStrokeCMYKColor(Object args[], int numArgs); |
| void opSetFillRGBColor(Object args[], int numArgs); |
| void opSetStrokeRGBColor(Object args[], int numArgs); |
| void opSetFillColorSpace(Object args[], int numArgs); |
| void opSetStrokeColorSpace(Object args[], int numArgs); |
| void opSetFillColor(Object args[], int numArgs); |
| void opSetStrokeColor(Object args[], int numArgs); |
| void opSetFillColorN(Object args[], int numArgs); |
| void opSetStrokeColorN(Object args[], int numArgs); |
| |
| // path segment operators |
| void opMoveTo(Object args[], int numArgs); |
| void opLineTo(Object args[], int numArgs); |
| void opCurveTo(Object args[], int numArgs); |
| void opCurveTo1(Object args[], int numArgs); |
| void opCurveTo2(Object args[], int numArgs); |
| void opRectangle(Object args[], int numArgs); |
| void opClosePath(Object args[], int numArgs); |
| |
| // path painting operators |
| void opEndPath(Object args[], int numArgs); |
| void opStroke(Object args[], int numArgs); |
| void opCloseStroke(Object args[], int numArgs); |
| void opFill(Object args[], int numArgs); |
| void opEOFill(Object args[], int numArgs); |
| void opFillStroke(Object args[], int numArgs); |
| void opCloseFillStroke(Object args[], int numArgs); |
| void opEOFillStroke(Object args[], int numArgs); |
| void opCloseEOFillStroke(Object args[], int numArgs); |
| void doPatternFill(GBool eoFill); |
| void doPatternStroke(); |
| void doPatternText(); |
| void doPatternImageMask(Object *ref, Stream *str, int width, int height, |
| GBool invert, GBool inlineImg); |
| void doTilingPatternFill(GfxTilingPattern *tPat, |
| GBool stroke, GBool eoFill, GBool text); |
| void doShadingPatternFill(GfxShadingPattern *sPat, |
| GBool stroke, GBool eoFill, GBool text); |
| void opShFill(Object args[], int numArgs); |
| void doFunctionShFill(GfxFunctionShading *shading); |
| void doFunctionShFill1(GfxFunctionShading *shading, |
| double x0, double y0, |
| double x1, double y1, |
| GfxColor *colors, int depth); |
| void doAxialShFill(GfxAxialShading *shading); |
| void doRadialShFill(GfxRadialShading *shading); |
| void doGouraudTriangleShFill(GfxGouraudTriangleShading *shading); |
| void gouraudFillTriangle(double x0, double y0, GfxColor *color0, |
| double x1, double y1, GfxColor *color1, |
| double x2, double y2, GfxColor *color2, |
| int nComps, int depth, GfxState::ReusablePathIterator *path); |
| void gouraudFillTriangle(double x0, double y0, double color0, |
| double x1, double y1, double color1, |
| double x2, double y2, double color2, |
| double refineColorThreshold, int depth, GfxGouraudTriangleShading *shading, GfxState::ReusablePathIterator *path); |
| void doPatchMeshShFill(GfxPatchMeshShading *shading); |
| void fillPatch(GfxPatch *patch, int colorComps, int patchColorComps, double refineColorThreshold, int depth, GfxPatchMeshShading *shading); |
| void doEndPath(); |
| |
| // path clipping operators |
| void opClip(Object args[], int numArgs); |
| void opEOClip(Object args[], int numArgs); |
| |
| // text object operators |
| void opBeginText(Object args[], int numArgs); |
| void opEndText(Object args[], int numArgs); |
| |
| // text state operators |
| void opSetCharSpacing(Object args[], int numArgs); |
| void opSetFont(Object args[], int numArgs); |
| void opSetTextLeading(Object args[], int numArgs); |
| void opSetTextRender(Object args[], int numArgs); |
| void opSetTextRise(Object args[], int numArgs); |
| void opSetWordSpacing(Object args[], int numArgs); |
| void opSetHorizScaling(Object args[], int numArgs); |
| |
| // text positioning operators |
| void opTextMove(Object args[], int numArgs); |
| void opTextMoveSet(Object args[], int numArgs); |
| void opSetTextMatrix(Object args[], int numArgs); |
| void opTextNextLine(Object args[], int numArgs); |
| |
| // text string operators |
| void opShowText(Object args[], int numArgs); |
| void opMoveShowText(Object args[], int numArgs); |
| void opMoveSetShowText(Object args[], int numArgs); |
| void opShowSpaceText(Object args[], int numArgs); |
| void doShowText(GooString *s); |
| void doIncCharCount(GooString *s); |
| |
| // XObject operators |
| void opXObject(Object args[], int numArgs); |
| void doImage(Object *ref, Stream *str, GBool inlineImg); |
| void doForm(Object *str); |
| |
| // in-line image operators |
| void opBeginImage(Object args[], int numArgs); |
| Stream *buildImageStream(); |
| void opImageData(Object args[], int numArgs); |
| void opEndImage(Object args[], int numArgs); |
| |
| // type 3 font operators |
| void opSetCharWidth(Object args[], int numArgs); |
| void opSetCacheDevice(Object args[], int numArgs); |
| |
| // compatibility operators |
| void opBeginIgnoreUndef(Object args[], int numArgs); |
| void opEndIgnoreUndef(Object args[], int numArgs); |
| |
| // marked content operators |
| void opBeginMarkedContent(Object args[], int numArgs); |
| void opEndMarkedContent(Object args[], int numArgs); |
| void opMarkPoint(Object args[], int numArgs); |
| GfxState *saveStateStack(); |
| void restoreStateStack(GfxState *oldState); |
| GBool contentIsHidden(); |
| void pushMarkedContent(); |
| void popMarkedContent(); |
| }; |
| |
| #endif |
