lib/gfxtools.h

   1 /* gfxtools.h
   2
   3    Various utility functions for dealing with gfxdevices (header file).
   4
   5    Part of the swftools package.
   6
   7    Copyright (c) 2005 Matthias Kramm <kramm@quiss.org>
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 2 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program; if not, write to the Free Software
  21    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
  22
  23 #ifndef __gfxtools_h__
  24 #define __gfxtools_h__
  25
  26 #ifdef __cplusplus
  27 extern "C" {
  28 #endif
  29
  30 #include <stdio.h>
  31 #include "../lib/mem.h"
  32 #include "../lib/gfxdevice.h"
  33
  34 typedef struct _gfxdrawer
  35 {
  36     void*internal;
  37     gfxcoord_t x,y;
  38     void (*moveTo)(struct _gfxdrawer*d, gfxcoord_t x, gfxcoord_t y);
  39     void (*lineTo)(struct _gfxdrawer*d, gfxcoord_t x, gfxcoord_t y);
  40     void (*splineTo)(struct _gfxdrawer*d, gfxcoord_t sx, gfxcoord_t sy, gfxcoord_t x, gfxcoord_t y);
  41     void (*close)(struct _gfxdrawer*d);
  42     void* (*result)(struct _gfxdrawer*d);
  43 } gfxdrawer_t;
  44
  45 typedef struct _gfxpoint
  46 {
  47     gfxcoord_t x,y;
  48 } gfxpoint_t;
  49
  50 typedef struct _gfxfontlist
  51 {
  52     gfxfont_t*font;
  53     void*user;
  54     struct _gfxfontlist*next;
  55 } gfxfontlist_t;
  56
  57 void gfxdrawer_target_gfxline(gfxdrawer_t*d);
  58
  59 void gfxtool_draw_dashed_line(gfxdrawer_t*d, gfxline_t*line, float*dashes, float phase);
  60 gfxline_t* gfxtool_dash_line(gfxline_t*line, float*dashes, float phase);
  61
  62 void gfxline_dump(gfxline_t*l, FILE*fi, char*prefix);
  63 gfxline_t* gfxline_append(gfxline_t*line1, gfxline_t*line2);
  64 void gfxline_free(gfxline_t*l);
  65 gfxline_t* gfxline_clone(gfxline_t*line);
  66 void gfxline_optimize(gfxline_t*line);
  67
  68 void gfxdraw_cubicTo(gfxdrawer_t*draw, double c1x, double c1y, double c2x, double c2y, double x, double y, double quality);
  69 void gfxdraw_conicTo(gfxdrawer_t*draw, double cx, double cy, double tox, double toy, double quality);
  70
  71 gfxbbox_t gfxline_getbbox(gfxline_t*line);
  72 gfxbbox_t gfxbbox_expand_to_point(gfxbbox_t box, gfxcoord_t x, gfxcoord_t y);
  73 void gfxbbox_intersect(gfxbbox_t*box1, gfxbbox_t*box2);
  74
  75 void gfxline_transform(gfxline_t*line, gfxmatrix_t*matrix);
  76
  77 /* tries to remove unnecessary moveTos from the gfxline */
  78 gfxline_t* gfxline_restitch(gfxline_t*line);
  79 /* reverses in place */
  80 gfxline_t* gfxline_reverse(gfxline_t*line);
  81
  82 void gfxmatrix_dump(gfxmatrix_t*l, FILE*fi, char*prefix);
  83 void gfxmatrix_transform(gfxmatrix_t*m, gfxcoord_t* v1, gfxcoord_t*dest);
  84 void gfxmatrix_invert(gfxmatrix_t*src, gfxmatrix_t*dest);
  85 void gfxmatrix_unit(gfxmatrix_t*m);
  86 void gfxmatrix_multiply(gfxmatrix_t*m1, gfxmatrix_t*m2, gfxmatrix_t*dest);
  87
  88 gfxfontlist_t* gfxfontlist_create();
  89 gfxfontlist_t*gfxfontlist_addfont(gfxfontlist_t*list, gfxfont_t*font);
  90 gfxfontlist_t*gfxfontlist_addfont2(gfxfontlist_t*list, gfxfont_t*font, void*user);
  91 gfxfont_t*gfxfontlist_findfont(gfxfontlist_t*list, char*id);
  92 char gfxfontlist_hasfont(gfxfontlist_t*list, gfxfont_t*font);
  93 void* gfxfontlist_getuserdata(gfxfontlist_t*list, const char*id);
  94 void gfxfontlist_free(gfxfontlist_t*list, char deletefonts);
  95
  96 gfxbbox_t* gfxline_isrectangle(gfxline_t*_l);
  97 gfxbbox_t gfxbbox_expand_to_bbox(gfxbbox_t box, gfxbbox_t box2);
  98
  99 gfxline_t*gfxline_makerectangle(double x1, double y1, double x2, double y2);
 100 gfxline_t*gfxline_makecircle(double x,double y,double rx, double ry);
 101 void gfxline_show(gfxline_t*line, FILE*fi);
 102
 103 void gfxgradient_destroy(gfxgradient_t*gradient);
 104
 105 typedef struct _gfxparam {
 106     const char*key;
 107     const char*value;
 108     struct _gfxparam* next;
 109 } gfxparam_t;
 110 typedef struct _gfxparams {
 111     gfxparam_t*params;
 112     gfxparam_t*last;
 113 } gfxparams_t;
 114 gfxparams_t* gfxparams_new();
 115 void gfxparams_store(gfxparams_t*params, const char*name, const char*value);
 116 void gfxparams_free(gfxparams_t*params);
 117
 118 #ifdef __cplusplus
 119 }
 120 #endif
 121
 122 #endif //__gfxtools_h__