mirror of https://github.com/fltk/fltk
259 lines
11 KiB
C++
259 lines
11 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 by Bill Spitzak and others.
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Library General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Library General Public License for more details.
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//
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// You should have received a copy of the GNU Library General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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// USA.
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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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/**
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\brief PostScript graphical backend.
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*
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PostScript text uses vectorial fonts for the latin alphabet (exactly: all unicode
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characters between U+0020 and U+017F, that is, ASCII, Latin-1 Supplement and Latin Extended-A charts)
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plus a few other characters:
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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 are output as a bitmap.
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<br> FLTK standard fonts are output using PostScript standard fonts: Helvetica, Courier,
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Times (and their bold, oblique, italic variants).
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*/
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class Fl_PostScript_Graphics_Driver : public Fl_Graphics_Driver {
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public:
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static const char *device_type;
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#ifndef FL_DOXYGEN
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public:
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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 font_;
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int size_;
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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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int (*close_cmd_)(FILE *);
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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 draw(const char* s, int n, int x, int y) {transformed_draw(s,n,x,y); };
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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 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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void draw_scaled_image(const uchar *data, double x, double y, double w, double h, int iw, int ih, int D=3, int LD=0);
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void draw_scaled_image_mono(const uchar *data, double x, double y, double w, double h, int iw, int ih, int D=3, int LD=0);
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void draw_scaled_image(Fl_Draw_Image_Cb call, void *data, double x, double y, double w, double h, int iw, int ih, int D);
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void draw_scaled_image_mono(Fl_Draw_Image_Cb call, void *data, double x, double y, double w, double h, int iw, int ih, int D);
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enum Fl_Paged_Device::Page_Format page_format_;
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char *ps_filename_;
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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 font(int face, int size);
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int font(){return font_;};
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int size(){return size_;};
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double width(unsigned c);
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double width(const char* s, int n);
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int descent();
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int height();
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void draw_image(const uchar* d, int x,int y,int w,int h, int delta=3, int ldelta=0){draw_scaled_image(d,x,y,w,h,w,h,delta,ldelta);};
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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){draw_scaled_image_mono(d,x,y,w,h,w,h,delta,ld);};
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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){draw_scaled_image(call,data, x, y, w, h, w, h, delta);};
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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){draw_scaled_image_mono(call, data, x, y, w, h, w, h, delta);};
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public:
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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( int (*cmd)(FILE *)){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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void place(double x, double y, double tx, double ty, double scale = 1);
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#endif // FL_DOXYGEN
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Fl_PostScript_Graphics_Driver();
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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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~Fl_PostScript_Graphics_Driver();
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};
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/**
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\brief To send graphical output to a PostScript file.
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*/
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class Fl_PostScript_File_Device : public Fl_Paged_Device {
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#ifdef __APPLE__
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Fl_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 *device_type;
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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, 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 scale (float scale_x, float scale_y);
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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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