trunk/src/josm_elemstyles.h

/*
 * Copyright (C) 2008 Till Harbaum <till@harbaum.org>.
 *
 * This file is part of OSM2Go.
 *
 * OSM2Go is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * OSM2Go is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with OSM2Go.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef JOSM_ELEMSTYLES_H
#define JOSM_ELEMSTYLES_H

// Ratio conversions

float scaledn_to_zoom(const float scaledn);
float zoom_to_scaledn(const float zoom);


typedef enum { 
  ES_TYPE_NONE = 0, 
  ES_TYPE_LINE, 
  ES_TYPE_AREA,
  ES_TYPE_LINE_MOD
} elemstyle_type_t;

#define DEFAULT_DASH_LENGTH 0

typedef gulong elemstyle_color_t;

/* from elemstyles.xml:
 *  line attributes
 *  - width absolute width in pixel in every zoom level
 *  - realwidth relative width which will be scaled in meters, integer
 *  - colour
 */

typedef struct {
  gint width;
  elemstyle_color_t color;
  gboolean dashed;
  gint dash_length;  // <= 0 means dash length is based on the width 

  struct {
    gboolean valid;
    gint width;
  } real;

  struct {
    gboolean valid;
    gint width;
    elemstyle_color_t color;
  } bg;

  float zoom_max;   // XXX probably belongs in elemstyle_s
} elemstyle_line_t;

/* attribute modifiers */
typedef enum { 
  ES_MOD_NONE = 0,  // don't change attribute
  ES_MOD_ADD,       // add constant value
  ES_MOD_SUB,       // subtract constant value
  ES_MOD_PERCENT    // scale by x percent
} elemstyle_mod_mode_t;

/* a width with modifier */
typedef struct {
  elemstyle_mod_mode_t mod;
  gint width;
} elemstyle_width_mod_t;


typedef struct {
  elemstyle_width_mod_t line, bg;
} elemstyle_line_mod_t;

typedef struct {
  elemstyle_color_t color;
  float zoom_max;   // XXX probably belongs in elemstyle_s
} elemstyle_area_t;

typedef struct {
  gboolean annotate;
  char *filename;
  float zoom_max;   // XXX probably belongs in elemstyle_s
} elemstyle_icon_t;

typedef struct elemstyle_s {
  struct {
    char *key;
    char *value;
  } condition;

  elemstyle_type_t type;

  union {
    elemstyle_line_mod_t *line_mod;
    elemstyle_line_t *line;
    elemstyle_area_t *area;
  };
  
  elemstyle_icon_t *icon;

  struct elemstyle_s *next;
} elemstyle_t;

elemstyle_t *josm_elemstyles_load(char *name);
void josm_elemstyles_free(elemstyle_t *elemstyles);
gboolean parse_color(xmlNode *a_node, char *name, elemstyle_color_t *color);

void josm_elemstyles_colorize_node(struct style_s *style, node_t *node);
void josm_elemstyles_colorize_way(struct style_s *style, way_t *way);
void josm_elemstyles_colorize_world(struct style_s *style, osm_t *osm);

#endif // JOSM_ELEMSTYLES_H

// vim:et:ts=8:sw=2:sts=2:ai
1	/*
2	* Copyright (C) 2008 Till Harbaum <till@harbaum.org>.
3	*
4	* This file is part of OSM2Go.
5	*
6	* OSM2Go is free software: you can redistribute it and/or modify
7	* it under the terms of the GNU General Public License as published by
8	* the Free Software Foundation, either version 3 of the License, or
9	* (at your option) any later version.
10	*
11	* OSM2Go is distributed in the hope that it will be useful,
12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14	* GNU General Public License for more details.
15	*
16	* You should have received a copy of the GNU General Public License
17	* along with OSM2Go. If not, see <http://www.gnu.org/licenses/>.
18	*/
19
20	#ifndef JOSM_ELEMSTYLES_H
21	#define JOSM_ELEMSTYLES_H
22
23	// Ratio conversions
24
25	float scaledn_to_zoom(const float scaledn);
26	float zoom_to_scaledn(const float zoom);
27
28
29	typedef enum {
30	ES_TYPE_NONE = 0,
31	ES_TYPE_LINE,
32	ES_TYPE_AREA,
33	ES_TYPE_LINE_MOD
34	} elemstyle_type_t;
35
36	#define DEFAULT_DASH_LENGTH 0
37
38	typedef gulong elemstyle_color_t;
39
40	/* from elemstyles.xml:
41	* line attributes
42	* - width absolute width in pixel in every zoom level
43	* - realwidth relative width which will be scaled in meters, integer
44	* - colour
45	*/
46
47	typedef struct {
48	gint width;
49	elemstyle_color_t color;
50	gboolean dashed;
51	gint dash_length; // <= 0 means dash length is based on the width
52
53	struct {
54	gboolean valid;
55	gint width;
56	} real;
57
58	struct {
59	gboolean valid;
60	gint width;
61	elemstyle_color_t color;
62	} bg;
63
64	float zoom_max; // XXX probably belongs in elemstyle_s
65	} elemstyle_line_t;
66
67	/* attribute modifiers */
68	typedef enum {
69	ES_MOD_NONE = 0, // don't change attribute
70	ES_MOD_ADD, // add constant value
71	ES_MOD_SUB, // subtract constant value
72	ES_MOD_PERCENT // scale by x percent
73	} elemstyle_mod_mode_t;
74
75	/* a width with modifier */
76	typedef struct {
77	elemstyle_mod_mode_t mod;
78	gint width;
79	} elemstyle_width_mod_t;
80
81
82	typedef struct {
83	elemstyle_width_mod_t line, bg;
84	} elemstyle_line_mod_t;
85
86	typedef struct {
87	elemstyle_color_t color;
88	float zoom_max; // XXX probably belongs in elemstyle_s
89	} elemstyle_area_t;
90
91	typedef struct {
92	gboolean annotate;
93	char *filename;
94	float zoom_max; // XXX probably belongs in elemstyle_s
95	} elemstyle_icon_t;
96
97	typedef struct elemstyle_s {
98	struct {
99	char *key;
100	char *value;
101	} condition;
102
103	elemstyle_type_t type;
104
105	union {
106	elemstyle_line_mod_t *line_mod;
107	elemstyle_line_t *line;
108	elemstyle_area_t *area;
109	};
110
111	elemstyle_icon_t *icon;
112
113	struct elemstyle_s *next;
114	} elemstyle_t;
115
116	elemstyle_t josm_elemstyles_load(char name);
117	void josm_elemstyles_free(elemstyle_t *elemstyles);
118	gboolean parse_color(xmlNode a_node, char name, elemstyle_color_t *color);
119
120	void josm_elemstyles_colorize_node(struct style_s style, node_t node);
121	void josm_elemstyles_colorize_way(struct style_s style, way_t way);
122	void josm_elemstyles_colorize_world(struct style_s style, osm_t osm);
123
124	#endif // JOSM_ELEMSTYLES_H
125
126	// vim:et:ts=8:sw=2:sts=2:ai