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 {
  28         struct svgtiny_diagram *diagram;
  29         dom_document *document;
  30
  31         float viewport_width;
  32         float viewport_height;
  33
  34         /* current transformation matrix */
  35         struct {
  36                 float a, b, c, d, e, f;
  37         } ctm;
  38
  39         /*struct css_style style;*/
  40
  41         /* paint attributes */
  42         svgtiny_colour fill;
  43         svgtiny_colour stroke;
  44         int stroke_width;
  45
  46         /* gradients */
  47         unsigned int linear_gradient_stop_count;
  48         const char *gradient_x1, *gradient_y1, *gradient_x2, *gradient_y2;
  49         struct svgtiny_gradient_stop gradient_stop[svgtiny_MAX_STOPS];
  50         bool gradient_user_space_on_use;
  51         struct {
  52                 float a, b, c, d, e, f;
  53         } gradient_transform;
  54 };
  55
  56 struct svgtiny_list;
  57
  58 /* svgtiny.c */
  59 float svgtiny_parse_length(const char *s, int viewport_size,
  60                 const struct svgtiny_parse_state state);
  61 void svgtiny_parse_color(const char *s, svgtiny_colour *c,
  62                 struct svgtiny_parse_state *state);
  63 void svgtiny_parse_transform(char *s, float *ma, float *mb,
  64                 float *mc, float *md, float *me, float *mf);
  65 struct svgtiny_shape *svgtiny_add_shape(struct svgtiny_parse_state *state);
  66 void svgtiny_transform_path(float *p, unsigned int n,
  67                 struct svgtiny_parse_state *state);
  68 #if defined(_GNU_SOURCE)
  69 #define HAVE_STRNDUP
  70 #else
  71 #undef HAVE_STRNDUP
  72 char *svgtiny_strndup(const char *s, size_t n);
  73 #define strndup svgtiny_strndup
  74 #endif
  75
  76 /* svgtiny_gradient.c */
  77 void svgtiny_find_gradient(const char *id, struct svgtiny_parse_state *state);
  78 svgtiny_code svgtiny_add_path_linear_gradient(float *p, unsigned int n,
  79                 struct svgtiny_parse_state *state);
  80 dom_node *svgtiny_find_element_by_id(dom_node *node, const char *id);
  81
  82 /* svgtiny_list.c */
  83 struct svgtiny_list *svgtiny_list_create(size_t item_size);
  84 unsigned int svgtiny_list_size(struct svgtiny_list *list);
  85 svgtiny_code svgtiny_list_resize(struct svgtiny_list *list,
  86                 unsigned int new_size);
  87 void *svgtiny_list_get(struct svgtiny_list *list,
  88                 unsigned int i);
  89 void *svgtiny_list_push(struct svgtiny_list *list);
  90 void svgtiny_list_free(struct svgtiny_list *list);
  91
  92 /* colors.gperf */
  93 const struct svgtiny_named_color *
  94                 svgtiny_color_lookup(register const char *str,
  95                                 register unsigned int len);
  96
  97 #endif