src/svgtiny_internal.h

   1 /*
   2  * This file is part of Libsvgtiny
   3  * Licensed under the MIT License,
   4  *                http://opensource.org/licenses/mit-license.php
   5  * Copyright 2008 James Bursa <james@semichrome.net>
   6  */
   7
   8 #ifndef SVGTINY_INTERNAL_H
   9 #define SVGTINY_INTERNAL_H
  10
  11 #include <stdbool.h>
  12
  13 #include <dom/dom.h>
  14
  15 #ifndef UNUSED
  16 #define UNUSED(x) ((void) (x))
  17 #endif
  18
  19 struct svgtiny_gradient_stop {
  20         float offset;
  21         svgtiny_colour color;
  22 };
  23
  24 #define svgtiny_MAX_STOPS 10
  25 #define svgtiny_LINEAR_GRADIENT 0x2000000
  26
  27 struct svgtiny_parse_state_gradient {
  28         unsigned int linear_gradient_stop_count;
  29         dom_string *gradient_x1, *gradient_y1, *gradient_x2, *gradient_y2;
  30         struct svgtiny_gradient_stop gradient_stop[svgtiny_MAX_STOPS];
  31         bool gradient_user_space_on_use;
  32         struct {
  33                 float a, b, c, d, e, f;
  34         } gradient_transform;
  35 };
  36
  37 struct svgtiny_parse_state {
  38         struct svgtiny_diagram *diagram;
  39         dom_document *document;
  40
  41         float viewport_width;
  42         float viewport_height;
  43
  44         /* current transformation matrix */
  45         struct {
  46                 float a, b, c, d, e, f;
  47         } ctm;
  48
  49         /*struct css_style style;*/
  50
  51         /* paint attributes */
  52         svgtiny_colour fill;
  53         svgtiny_colour stroke;
  54         int stroke_width;
  55
  56         /* gradients */
  57         struct svgtiny_parse_state_gradient fill_grad;
  58         struct svgtiny_parse_state_gradient stroke_grad;
  59
  60         /* Interned strings */
  61 #define SVGTINY_STRING_ACTION2(n,nn) dom_string *interned_##n;
  62 #include "svgtiny_strings.h"
  63 #undef SVGTINY_STRING_ACTION2
  64
  65 };
  66
  67 struct svgtiny_list;
  68
  69 /* svgtiny.c */
  70 float svgtiny_parse_length(dom_string *s, int viewport_size,
  71                 const struct svgtiny_parse_state state);
  72 void svgtiny_parse_color(dom_string *s, svgtiny_colour *c,
  73                 struct svgtiny_parse_state_gradient *grad,
  74                 struct svgtiny_parse_state *state);
  75 void svgtiny_parse_transform(char *s, float *ma, float *mb,
  76                 float *mc, float *md, float *me, float *mf);
  77 struct svgtiny_shape *svgtiny_add_shape(struct svgtiny_parse_state *state);
  78 void svgtiny_transform_path(float *p, unsigned int n,
  79                 struct svgtiny_parse_state *state);
  80 #if (defined(_GNU_SOURCE) && !defined(__APPLE__) || defined(__amigaos4__) || defined(__HAIKU__) || (defined(_POSIX_C_SOURCE) && ((_POSIX_C_SOURCE - 0) >= 200809L)))
  81 #define HAVE_STRNDUP
  82 #else
  83 #undef HAVE_STRNDUP
  84 char *svgtiny_strndup(const char *s, size_t n);
  85 #define strndup svgtiny_strndup
  86 #endif
  87
  88 /* svgtiny_gradient.c */
  89 void svgtiny_find_gradient(const char *id,
  90                 struct svgtiny_parse_state_gradient *grad,
  91                 struct svgtiny_parse_state *state);
  92 svgtiny_code svgtiny_add_path_linear_gradient(float *p, unsigned int n,
  93                 struct svgtiny_parse_state *state);
  94
  95 /* svgtiny_list.c */
  96 struct svgtiny_list *svgtiny_list_create(size_t item_size);
  97 unsigned int svgtiny_list_size(struct svgtiny_list *list);
  98 svgtiny_code svgtiny_list_resize(struct svgtiny_list *list,
  99                 unsigned int new_size);
 100 void *svgtiny_list_get(struct svgtiny_list *list,
 101                 unsigned int i);
 102 void *svgtiny_list_push(struct svgtiny_list *list);
 103 void svgtiny_list_free(struct svgtiny_list *list);
 104
 105 /* colors.gperf */
 106 const struct svgtiny_named_color *
 107                 svgtiny_color_lookup(register const char *str,
 108                                 register unsigned int len);
 109
 110 #endif