mirror of https://github.com/fltk/fltk
265 lines
10 KiB
C++
265 lines
10 KiB
C++
//
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// "$Id$"
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//
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// Support for graphics output to PostScript file for the Fast Light Tool Kit (FLTK).
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//
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// Copyright 2010-2011 by Bill Spitzak and others.
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//
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// This library is free software. Distribution and use rights are outlined in
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// the file "COPYING" which should have been included with this file. If this
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// file is missing or damaged, see the license at:
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//
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// http://www.fltk.org/COPYING.php
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//
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// Please report all bugs and problems on the following page:
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//
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// http://www.fltk.org/str.php
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//
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/** \file Fl_PostScript.H
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\brief declaration of classes Fl_PostScript_Graphics_Driver, Fl_PostScript_File_Device.
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*/
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#ifndef Fl_PostScript_H
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#define Fl_PostScript_H
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#include <FL/Fl_Paged_Device.H>
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#include <FL/fl_draw.H>
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#include <stdarg.h>
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/* Signature of Fl_PostScript::close_command() functions passed as parameters. */
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extern "C" {
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typedef int (Fl_PostScript_Close_Command)(FILE *);
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}
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/**
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\brief PostScript graphical backend.
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*
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PostScript text uses vectorial fonts when using the FLTK standard fonts
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and the latin alphabet or a few other characters listed in the following table.
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The latin alphabet means all unicode characters between U+0020 and U+017F, or, in other words,
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the ASCII, Latin-1 Supplement and Latin Extended-A charts.
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<table>
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<tr> <th>Char</th><th>Codepoint</th><th>Name</th> <th>Char</th><th>Codepoint</th><th>Name</th> <th>Char</th><th>Codepoint</th><th>Name</th></tr>
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<tr><td>ƒ</td><td>U+0192</td><td>florin</td><td>‚</td><td>U+201A</td><td>quotesinglbase</td><td>™</td><td>U+2122</td><td>trademark</td></tr>
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<tr><td>ˆ</td><td>U+02C6</td><td>circumflex</td><td>“</td><td>U+201C</td><td>quotedblleft</td><td>∂</td><td>U+2202</td><td>partialdiff</td></tr>
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<tr><td>ˇ</td><td>U+02C7</td><td>caron</td><td>”</td><td>U+201D</td><td>quotedblright</td><td>Δ</td><td>U+2206</td><td>Delta</td></tr>
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<tr><td>˘</td><td>U+02D8</td><td>breve</td><td>„</td><td>U+201E</td><td>quotedblbase</td><td>∑</td><td>U+2211</td><td>summation</td></tr>
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<tr><td>˙</td><td>U+02D9</td><td>dotaccent</td><td>†</td><td>U+2020</td><td>dagger</td><td>√</td><td>U+221A</td><td>radical</td></tr>
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<tr><td>˚</td><td>U+02DA</td><td>ring</td><td>‡</td><td>U+2021</td><td>daggerdbl</td><td>∞</td><td>U+221E</td><td>infinity</td></tr>
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<tr><td>˛</td><td>U+02DB</td><td>ogonek</td><td>•</td><td>U+2022</td><td>bullet</td><td>≠</td><td>U+2260</td><td>notequal</td></tr>
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<tr><td>˜</td><td>U+02DC</td><td>tilde</td><td>…</td><td>U+2026</td><td>ellipsis</td><td>≤</td><td>U+2264</td><td>lessequal</td></tr>
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<tr><td>˝</td><td>U+02DD</td><td>hungarumlaut</td><td>‰</td><td>U+2030</td><td>perthousand</td><td>≥</td><td>U+2265</td><td>greaterequal</td></tr>
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<tr><td>–</td><td>U+2013</td><td>endash</td><td>‹</td><td>U+2039</td><td>guilsinglleft</td><td>◊</td><td>U+25CA</td><td>lozenge</td></tr>
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<tr><td>—</td><td>U+2014</td><td>emdash</td><td>›</td><td>U+203A</td><td>guilsinglright</td><td>fi</td><td>U+FB01</td><td>fi</td></tr>
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<tr><td>‘</td><td>U+2018</td><td>quoteleft</td><td>/</td><td>U+2044</td><td>fraction</td><td>fl</td><td>U+FB02</td><td>fl</td></tr>
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<tr><td>’</td><td>U+2019</td><td>quoteright</td><td>€</td><td>U+20AC</td><td>Euro</td><td></td><td>U+F8FF</td><td>apple (Mac OS only)</td></tr>
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</table>
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<br> All other unicode characters or all other fonts (FL_FREE_FONT and above) are output as a bitmap.
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<br> FLTK standard fonts are output using the corresponding PostScript standard fonts.
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*/
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class FL_EXPORT Fl_PostScript_Graphics_Driver : public Fl_Graphics_Driver {
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private:
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void transformed_draw_extra(const char* str, int n, double x, double y, int w, bool rtl);
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void *prepare_rle85();
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void write_rle85(uchar b, void *data);
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void close_rle85(void *data);
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void *prepare85();
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void write85(void *data, const uchar *p, int len);
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void close85(void *data);
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public:
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static const char *class_id;
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const char *class_name() {return class_id;};
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Fl_PostScript_Graphics_Driver();
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#ifndef FL_DOXYGEN
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enum SHAPE{NONE=0, LINE, LOOP, POLYGON, POINTS};
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class Clip {
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public:
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int x, y, w, h;
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Clip *prev;
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};
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Clip * clip_;
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int lang_level_;
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int gap_;
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int pages_;
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double width_;
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double height_;
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int shape_;
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int linewidth_;// need for clipping, lang level 1-2
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int linestyle_;//
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int interpolate_; //interpolation of images
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unsigned char cr_,cg_,cb_;
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char linedash_[256];//should be enough
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void concat(); // transform ror scalable dradings...
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void reconcat(); //invert
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void recover(); //recovers the state after grestore (such as line styles...)
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void reset();
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uchar * mask;
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int mx; // width of mask;
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int my; // mask lines
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//Fl_Color bg_;
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Fl_PostScript_Close_Command* close_cmd_;
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int page_policy_;
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int nPages;
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int orientation_;
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float scale_x;
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float scale_y;
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float angle;
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int left_margin;
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int top_margin;
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FILE *output;
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double pw_, ph_;
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uchar bg_r, bg_g, bg_b;
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int start_postscript (int pagecount, enum Fl_Paged_Device::Page_Format format, enum Fl_Paged_Device::Page_Layout layout);
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/* int alpha_mask(const uchar * data, int w, int h, int D, int LD=0);
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*/
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void transformed_draw(const char* s, int n, double x, double y); //precise text placing
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void transformed_draw(const char* s, double x, double y);
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int alpha_mask(const uchar * data, int w, int h, int D, int LD=0);
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enum Fl_Paged_Device::Page_Format page_format_;
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char *ps_filename_;
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void page_policy(int p);
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int page_policy(){return page_policy_;};
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void close_command(Fl_PostScript_Close_Command* cmd){close_cmd_=cmd;};
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FILE * file() {return output;};
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//void orientation (int o);
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//Fl_PostScript_Graphics_Driver(FILE *o, int lang_level, int pages = 0); // ps (also multi-page) constructor
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//Fl_PostScript_Graphics_Driver(FILE *o, int lang_level, int x, int y, int w, int h); //eps constructor
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void interpolate(int i){interpolate_=i;};
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int interpolate(){return interpolate_;}
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void page(double pw, double ph, int media = 0);
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void page(int format);
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#endif // FL_DOXYGEN
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// implementation of drawing methods
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void color(Fl_Color c);
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void color(uchar r, uchar g, uchar b);
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void push_clip(int x, int y, int w, int h);
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int clip_box(int x, int y, int w, int h, int &X, int &Y, int &W, int &H);
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int not_clipped(int x, int y, int w, int h);
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void push_no_clip();
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void pop_clip();
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void line_style(int style, int width=0, char* dashes=0);
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void rect(int x, int y, int w, int h);
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void rectf(int x, int y, int w, int h);
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void xyline(int x, int y, int x1);
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void xyline(int x, int y, int x1, int y2);
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void xyline(int x, int y, int x1, int y2, int x3);
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void yxline(int x, int y, int y1);
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void yxline(int x, int y, int y1, int x2);
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void yxline(int x, int y, int y1, int x2, int y3);
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void line(int x1, int y1, int x2, int y2);
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void line(int x1, int y1, int x2, int y2, int x3, int y3);
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void loop(int x0, int y0, int x1, int y1, int x2, int y2);
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void loop(int x0, int y0, int x1, int y1, int x2, int y2, int x3, int y3);
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void polygon(int x0, int y0, int x1, int y1, int x2, int y2);
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void polygon(int x0, int y0, int x1, int y1, int x2, int y2, int x3, int y3);
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void point(int x, int y);
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void begin_points();
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void begin_line();
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void begin_loop();
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void begin_polygon();
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void vertex(double x, double y);
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void curve(double x, double y, double x1, double y1, double x2, double y2, double x3, double y3);
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void circle(double x, double y, double r);
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void arc(double x, double y, double r, double start, double a);
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void arc(int x, int y, int w, int h, double a1, double a2);
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void pie(int x, int y, int w, int h, double a1, double a2);
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void end_points();
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void end_line();
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void end_loop();
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void end_polygon();
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void begin_complex_polygon(){begin_polygon();};
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void gap(){gap_=1;};
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void end_complex_polygon(){end_polygon();};
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void transformed_vertex(double x, double y);
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void draw_image(const uchar* d, int x,int y,int w,int h, int delta=3, int ldelta=0);
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void draw_image_mono(const uchar* d, int x,int y,int w,int h, int delta=1, int ld=0);
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void draw_image(Fl_Draw_Image_Cb call, void* data, int x,int y, int w, int h, int delta=3);
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void draw_image_mono(Fl_Draw_Image_Cb call, void* data, int x,int y, int w, int h, int delta=1);
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void draw(const char* s, int nBytes, int x, int y) {transformed_draw(s,nBytes,x,y); };
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#ifdef __APPLE__
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void draw(const char* s, int nBytes, float x, float y) {transformed_draw(s,nBytes,x,y); };
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#endif
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void draw(int angle, const char *str, int n, int x, int y);
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void rtl_draw(const char* s, int n, int x, int y);
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void font(int face, int size);
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double width(const char *, int);
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double width(unsigned int u);
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void text_extents(const char *c, int n, int &dx, int &dy, int &w, int &h);
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int height();
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int descent();
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void draw(Fl_Pixmap * pxm,int XP, int YP, int WP, int HP, int cx, int cy);
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void draw(Fl_Bitmap * bitmap,int XP, int YP, int WP, int HP, int cx, int cy);
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void draw(Fl_RGB_Image * rgb,int XP, int YP, int WP, int HP, int cx, int cy);
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int draw_scaled(Fl_Image *img, int XP, int YP, int WP, int HP);
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int clocale_printf(const char *format, ...);
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~Fl_PostScript_Graphics_Driver();
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};
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/**
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To send graphical output to a PostScript file.
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This class is used exactly as the Fl_Printer class except for the start_job() call,
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two variants of which are usable and allow to specify what page format and layout are desired.
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*/
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class FL_EXPORT Fl_PostScript_File_Device : public Fl_Paged_Device {
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#ifdef __APPLE__
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CGContextRef gc;
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#endif
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protected:
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Fl_PostScript_Graphics_Driver *driver();
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public:
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static const char *class_id;
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const char *class_name() {return class_id;};
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Fl_PostScript_File_Device();
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~Fl_PostScript_File_Device();
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int start_job(int pagecount, int* from, int* to);
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int start_job(int pagecount, enum Fl_Paged_Device::Page_Format format = Fl_Paged_Device::A4,
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enum Fl_Paged_Device::Page_Layout layout = Fl_Paged_Device::PORTRAIT);
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int start_job(FILE *ps_output, int pagecount, enum Fl_Paged_Device::Page_Format format = Fl_Paged_Device::A4,
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enum Fl_Paged_Device::Page_Layout layout = Fl_Paged_Device::PORTRAIT);
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int start_page (void);
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int printable_rect(int *w, int *h);
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void margins(int *left, int *top, int *right, int *bottom);
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void origin(int *x, int *y);
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void origin(int x, int y);
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void scale (float scale_x, float scale_y = 0.);
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void rotate(float angle);
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void translate(int x, int y);
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void untranslate(void);
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int end_page (void);
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void end_job(void);
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#ifdef __APPLE__
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void set_current() { fl_gc = gc; Fl_Paged_Device::set_current(); }
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#endif
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static const char *file_chooser_title;
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};
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#endif // Fl_PostScript_H
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//
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// End of "$Id$"
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//
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