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	harbaum	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	harbaum	15	ES_TYPE_AREA,
33			ES_TYPE_LINE_MOD
34	harbaum	1	} elemstyle_type_t;
35
36	achadwick	46	#define DEFAULT_DASH_LENGTH 0
37
38	harbaum	1	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	achadwick	13	gboolean dashed;
51	achadwick	46	gint dash_length; // <= 0 means dash length is based on the width
52	harbaum	1
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	harbaum	15	/* 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	harbaum	1	typedef struct {
77	harbaum	15	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	harbaum	1	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	harbaum	15	elemstyle_line_mod_t *line_mod;
107	harbaum	1	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	achadwick	13
126			// vim:et:ts=8:sw=2:sts=2:ai