1 //========================================================================
5 // Copyright 1996-2003 Glyph & Cog, LLC
7 //========================================================================
14 #ifdef USE_GCC_PRAGMAS
30 class GfxTilingPattern;
31 class GfxShadingPattern;
33 class GfxFunctionShading;
34 class GfxAxialShading;
35 class GfxRadialShading;
41 //------------------------------------------------------------------------
43 //------------------------------------------------------------------------
54 tchkNum, // number (integer or real)
58 tchkProps, // properties (dictionary or name)
59 tchkSCN, // scn/SCN args (number of name)
60 tchkNone // used to avoid empty initializer lists
68 TchkType tchk[maxArgs];
69 void (Gfx::*func)(Object args[], int numArgs);
75 GfxResources(XRef *xref, Dict *resDict, GfxResources *nextA);
78 GfxFont *lookupFont(char *name);
79 GBool lookupXObject(char *name, Object *obj);
80 GBool lookupXObjectNF(char *name, Object *obj);
81 void lookupColorSpace(char *name, Object *obj);
82 GfxPattern *lookupPattern(char *name);
83 GfxShading *lookupShading(char *name);
84 GBool lookupGState(char *name, Object *obj);
86 GfxResources *getNext() { return next; }
92 Object colorSpaceDict;
102 // Constructor for regular output.
103 Gfx(XRef *xrefA, OutputDev *outA, int pageNum, Dict *resDict,
104 double hDPI, double vDPI, PDFRectangle *box, GBool crop,
105 PDFRectangle *cropBox, int rotate,
106 GBool (*abortCheckCbkA)(void *data) = NULL,
107 void *abortCheckCbkDataA = NULL);
109 // Constructor for a sub-page object.
110 Gfx(XRef *xrefA, OutputDev *outA, Dict *resDict,
111 PDFRectangle *box, GBool crop, PDFRectangle *cropBox,
112 GBool (*abortCheckCbkA)(void *data) = NULL,
113 void *abortCheckCbkDataA = NULL);
117 // Interpret a stream or array of streams.
118 void display(Object *obj, GBool topLevel = gTrue);
120 // Display an annotation, given its appearance (a Form XObject) and
121 // bounding box (in default user space).
122 void doAnnot(Object *str, double xMin, double yMin,
123 double xMax, double yMax);
125 // Save graphics state.
128 // Restore graphics state.
133 XRef *xref; // the xref table for this PDF file
134 OutputDev *out; // output device
135 GBool subPage; // is this a sub-page object?
136 GBool printCommands; // print the drawing commands (for debugging)
137 GfxResources *res; // resource stack
140 GfxState *state; // current graphics state
141 GBool fontChanged; // set if font or text matrix has changed
142 GfxClipType clip; // do a clip?
143 int ignoreUndef; // current BX/EX nesting level
144 double baseMatrix[6]; // default matrix for most recent
148 Parser *parser; // parser for page content stream(s)
150 GBool // callback to check for an abort
151 (*abortCheckCbk)(void *data);
152 void *abortCheckCbkData;
154 static Operator opTab[]; // table of operators
156 void go(GBool topLevel);
157 void execOp(Object *cmd, Object args[], int numArgs);
158 Operator *findOp(char *name);
159 GBool checkArg(Object *arg, TchkType type);
162 // graphics state operators
163 void opSave(Object args[], int numArgs);
164 void opRestore(Object args[], int numArgs);
165 void opConcat(Object args[], int numArgs);
166 void opSetDash(Object args[], int numArgs);
167 void opSetFlat(Object args[], int numArgs);
168 void opSetLineJoin(Object args[], int numArgs);
169 void opSetLineCap(Object args[], int numArgs);
170 void opSetMiterLimit(Object args[], int numArgs);
171 void opSetLineWidth(Object args[], int numArgs);
172 void opSetExtGState(Object args[], int numArgs);
173 void opSetRenderingIntent(Object args[], int numArgs);
176 void opSetFillGray(Object args[], int numArgs);
177 void opSetStrokeGray(Object args[], int numArgs);
178 void opSetFillCMYKColor(Object args[], int numArgs);
179 void opSetStrokeCMYKColor(Object args[], int numArgs);
180 void opSetFillRGBColor(Object args[], int numArgs);
181 void opSetStrokeRGBColor(Object args[], int numArgs);
182 void opSetFillColorSpace(Object args[], int numArgs);
183 void opSetStrokeColorSpace(Object args[], int numArgs);
184 void opSetFillColor(Object args[], int numArgs);
185 void opSetStrokeColor(Object args[], int numArgs);
186 void opSetFillColorN(Object args[], int numArgs);
187 void opSetStrokeColorN(Object args[], int numArgs);
189 // path segment operators
190 void opMoveTo(Object args[], int numArgs);
191 void opLineTo(Object args[], int numArgs);
192 void opCurveTo(Object args[], int numArgs);
193 void opCurveTo1(Object args[], int numArgs);
194 void opCurveTo2(Object args[], int numArgs);
195 void opRectangle(Object args[], int numArgs);
196 void opClosePath(Object args[], int numArgs);
198 // path painting operators
199 void opEndPath(Object args[], int numArgs);
200 void opStroke(Object args[], int numArgs);
201 void opCloseStroke(Object args[], int numArgs);
202 void opFill(Object args[], int numArgs);
203 void opEOFill(Object args[], int numArgs);
204 void opFillStroke(Object args[], int numArgs);
205 void opCloseFillStroke(Object args[], int numArgs);
206 void opEOFillStroke(Object args[], int numArgs);
207 void opCloseEOFillStroke(Object args[], int numArgs);
208 void doPatternFill(GBool eoFill);
209 void doTilingPatternFill(GfxTilingPattern *tPat, GBool eoFill);
210 void doShadingPatternFill(GfxShadingPattern *sPat, GBool eoFill);
211 void opShFill(Object args[], int numArgs);
212 void doFunctionShFill(GfxFunctionShading *shading);
213 void doFunctionShFill1(GfxFunctionShading *shading,
214 double x0, double y0,
215 double x1, double y1,
216 GfxColor *colors, int depth);
217 void doAxialShFill(GfxAxialShading *shading);
218 void doRadialShFill(GfxRadialShading *shading);
221 // path clipping operators
222 void opClip(Object args[], int numArgs);
223 void opEOClip(Object args[], int numArgs);
225 // text object operators
226 void opBeginText(Object args[], int numArgs);
227 void opEndText(Object args[], int numArgs);
229 // text state operators
230 void opSetCharSpacing(Object args[], int numArgs);
231 void opSetFont(Object args[], int numArgs);
232 void opSetTextLeading(Object args[], int numArgs);
233 void opSetTextRender(Object args[], int numArgs);
234 void opSetTextRise(Object args[], int numArgs);
235 void opSetWordSpacing(Object args[], int numArgs);
236 void opSetHorizScaling(Object args[], int numArgs);
238 // text positioning operators
239 void opTextMove(Object args[], int numArgs);
240 void opTextMoveSet(Object args[], int numArgs);
241 void opSetTextMatrix(Object args[], int numArgs);
242 void opTextNextLine(Object args[], int numArgs);
244 // text string operators
245 void opShowText(Object args[], int numArgs);
246 void opMoveShowText(Object args[], int numArgs);
247 void opMoveSetShowText(Object args[], int numArgs);
248 void opShowSpaceText(Object args[], int numArgs);
249 void doShowText(GString *s);
252 void opXObject(Object args[], int numArgs);
253 void doImage(Object *ref, Stream *str, GBool inlineImg);
254 void doForm(Object *str);
255 void doForm1(Object *str, Dict *resDict, double *matrix, double *bbox);
257 // in-line image operators
258 void opBeginImage(Object args[], int numArgs);
259 Stream *buildImageStream();
260 void opImageData(Object args[], int numArgs);
261 void opEndImage(Object args[], int numArgs);
263 // type 3 font operators
264 void opSetCharWidth(Object args[], int numArgs);
265 void opSetCacheDevice(Object args[], int numArgs);
267 // compatibility operators
268 void opBeginIgnoreUndef(Object args[], int numArgs);
269 void opEndIgnoreUndef(Object args[], int numArgs);
271 // marked content operators
272 void opBeginMarkedContent(Object args[], int numArgs);
273 void opEndMarkedContent(Object args[], int numArgs);
274 void opMarkPoint(Object args[], int numArgs);
276 void pushResources(Dict *resDict);