Diffstat (limited to 'noncore/unsupported/qpdf/xpdf/Gfx.h') (more/less context) (ignore whitespace changes)
| -rw-r--r-- | noncore/unsupported/qpdf/xpdf/Gfx.h | 240 |
1 files changed, 240 insertions, 0 deletions
diff --git a/noncore/unsupported/qpdf/xpdf/Gfx.h b/noncore/unsupported/qpdf/xpdf/Gfx.h new file mode 100644 index 0000000..be5f2c2 --- a/dev/null +++ b/noncore/unsupported/qpdf/xpdf/Gfx.h @@ -0,0 +1,240 @@ +//======================================================================== +// +// Gfx.h +// +// Copyright 1996 Derek B. Noonburg +// +//======================================================================== + +#ifndef GFX_H +#define GFX_H + +#ifdef __GNUC__ +#pragma interface +#endif + +#include "gtypes.h" + +class GString; +class XRef; +class Array; +class Stream; +class Parser; +class Dict; +class OutputDev; +class GfxFontDict; +class GfxFont; +class GfxPattern; +class GfxShading; +class GfxAxialShading; +class GfxState; +class Gfx; +struct PDFRectangle; + +//------------------------------------------------------------------------ +// Gfx +//------------------------------------------------------------------------ + +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 8 + +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); + GBool lookupXObject(char *name, Object *obj); + GBool lookupXObjectNF(char *name, Object *obj); + void lookupColorSpace(char *name, Object *obj); + GfxPattern *lookupPattern(char *name); + GfxShading *lookupShading(char *name); + GBool lookupGState(char *name, Object *obj); + + GfxResources *getNext() { return next; } + +private: + + GfxFontDict *fonts; + Object xObjDict; + Object colorSpaceDict; + Object patternDict; + Object shadingDict; + Object gStateDict; + GfxResources *next; +}; + +class Gfx { +public: + + // Constructor for regular output. + Gfx(XRef *xrefA, OutputDev *outA, int pageNum, Dict *resDict, fouble dpi, + PDFRectangle *box, GBool crop, PDFRectangle *cropBox, int rotate, + GBool printCommandsA); + + // Destructor. + ~Gfx(); + + // Interpret a stream or array of streams. + void display(Object *obj, GBool topLevel = gTrue); + + void doWidgetForm(Object *str, fouble xMin, fouble yMin, + fouble xMax, fouble yMax); + +private: + + XRef *xref; // the xref table for this PDF file + OutputDev *out; // output device + GBool printCommands; // print the drawing commands (for debugging) + GfxResources *res; // resource stack + + GfxState *state; // current graphics state + GBool fontChanged; // set if font or text matrix has changed + GfxClipType clip; // do a clip? + int ignoreUndef; // current BX/EX nesting level + fouble baseMatrix[6]; // default matrix for most recent + // page/form/pattern + + Parser *parser; // parser for page content stream(s) + + 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); + int getPos(); + + // 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 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 opShFill(Object args[], int numArgs); + void doAxialShFill(GfxAxialShading *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(GString *s); + + // XObject operators + void opXObject(Object args[], int numArgs); + void doImage(Object *ref, Stream *str, GBool inlineImg); + void doForm(Object *str); + void doForm1(Object *str, Dict *resDict, fouble *matrix, fouble *bbox); + + // 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); +}; + +#endif |