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 #ifndef UNUSED
  14 #define UNUSED(x) ((void) (x))
  15 #endif
  16
  17 struct svgtiny_gradient_stop {
  18         float offset;
  19         svgtiny_colour color;
  20 };
  21
  22 #define svgtiny_MAX_STOPS 10
  23 #define svgtiny_LINEAR_GRADIENT 0x2000000
  24
  25 struct svgtiny_parse_state {
  26         struct svgtiny_diagram *diagram;
  27         xmlDoc *document;
  28
  29         float viewport_width;
  30         float viewport_height;
  31
  32         /* current transformation matrix */
  33         struct {
  34                 float a, b, c, d, e, f;
  35         } ctm;
  36
  37         /*struct css_style style;*/
  38
  39         /* paint attributes */
  40         svgtiny_colour fill;
  41         svgtiny_colour stroke;
  42         int stroke_width;
  43
  44         /* gradients */
  45         unsigned int linear_gradient_stop_count;
  46         const char *gradient_x1, *gradient_y1, *gradient_x2, *gradient_y2;
  47         struct svgtiny_gradient_stop gradient_stop[svgtiny_MAX_STOPS];
  48         bool gradient_user_space_on_use;
  49         struct {
  50                 float a, b, c, d, e, f;
  51         } gradient_transform;
  52 };
  53
  54 struct svgtiny_list;
  55
  56 /* svgtiny.c */
  57 float svgtiny_parse_length(const char *s, int viewport_size,
  58                 const struct svgtiny_parse_state state);
  59 void svgtiny_parse_color(const char *s, svgtiny_colour *c,
  60                 struct svgtiny_parse_state *state);
  61 void svgtiny_parse_transform(char *s, float *ma, float *mb,
  62                 float *mc, float *md, float *me, float *mf);
  63 struct svgtiny_shape *svgtiny_add_shape(struct svgtiny_parse_state *state);
  64 void svgtiny_transform_path(float *p, unsigned int n,
  65                 struct svgtiny_parse_state *state);
  66 #if defined(_GNU_SOURCE)
  67 #define HAVE_STRNDUP
  68 #else
  69 #undef HAVE_STRNDUP
  70 char *strndup(const char *s, size_t n);
  71 #endif
  72
  73 /* svgtiny_gradient.c */
  74 void svgtiny_find_gradient(const char *id, struct svgtiny_parse_state *state);
  75 svgtiny_code svgtiny_add_path_linear_gradient(float *p, unsigned int n,
  76                 struct svgtiny_parse_state *state);
  77 xmlNode *svgtiny_find_element_by_id(xmlNode *node, const char *id);
  78
  79 /* svgtiny_list.c */
  80 struct svgtiny_list *svgtiny_list_create(size_t item_size);
  81 unsigned int svgtiny_list_size(struct svgtiny_list *list);
  82 svgtiny_code svgtiny_list_resize(struct svgtiny_list *list,
  83                 unsigned int new_size);
  84 void *svgtiny_list_get(struct svgtiny_list *list,
  85                 unsigned int i);
  86 void *svgtiny_list_push(struct svgtiny_list *list);
  87 void svgtiny_list_free(struct svgtiny_list *list);
  88
  89 /* colors.gperf */
  90 const struct svgtiny_named_color *
  91                 svgtiny_color_lookup(register const char *str,
  92                                 register unsigned int len);
  93
  94 #endif