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 struct svgtiny_gradient_stop {
  14         float offset;
  15         svgtiny_colour color;
  16 };
  17
  18 #define svgtiny_MAX_STOPS 10
  19 #define svgtiny_LINEAR_GRADIENT 0x2000000
  20
  21 struct svgtiny_parse_state {
  22         struct svgtiny_diagram *diagram;
  23         xmlDoc *document;
  24
  25         float viewport_width;
  26         float viewport_height;
  27
  28         /* current transformation matrix */
  29         struct {
  30                 float a, b, c, d, e, f;
  31         } ctm;
  32
  33         /*struct css_style style;*/
  34
  35         /* paint attributes */
  36         svgtiny_colour fill;
  37         svgtiny_colour stroke;
  38         int stroke_width;
  39
  40         /* gradients */
  41         unsigned int linear_gradient_stop_count;
  42         const char *gradient_x1, *gradient_y1, *gradient_x2, *gradient_y2;
  43         struct svgtiny_gradient_stop gradient_stop[svgtiny_MAX_STOPS];
  44         bool gradient_user_space_on_use;
  45         struct {
  46                 float a, b, c, d, e, f;
  47         } gradient_transform;
  48 };
  49
  50
  51 /* svgtiny.c */
  52 float svgtiny_parse_length(const char *s, int viewport_size,
  53                 const struct svgtiny_parse_state state);
  54 void svgtiny_parse_color(const char *s, svgtiny_colour *c,
  55                 struct svgtiny_parse_state *state);
  56 void svgtiny_parse_transform(char *s, float *ma, float *mb,
  57                 float *mc, float *md, float *me, float *mf);
  58 struct svgtiny_shape *svgtiny_add_shape(struct svgtiny_parse_state *state);
  59 void svgtiny_transform_path(float *p, unsigned int n,
  60                 struct svgtiny_parse_state *state);
  61
  62 /* svgtiny_gradient.c */
  63 void svgtiny_find_gradient(const char *id, struct svgtiny_parse_state *state);
  64 svgtiny_code svgtiny_add_path_linear_gradient(float *p, unsigned int n,
  65                 struct svgtiny_parse_state *state);
  66 xmlNode *svgtiny_find_element_by_id(xmlNode *node, const char *id);
  67
  68 /* colors.gperf */
  69 const struct svgtiny_named_color *
  70                 svgtiny_color_lookup(register const char *str,
  71                                 register unsigned int len);
  72
  73 #endif