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