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Begin trunk. No code changes.
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 | #include <ctype.h> |
21 | |
22 | #include "appdata.h" |
23 | |
24 | #define TAG_STATE GTK_STATE_PRELIGHT |
25 | |
26 | void pos_lat_str(char *str, int len, double latitude) { |
27 | snprintf(str, len-1, "%.5f", latitude); |
28 | /* eliminate trailing zeros */ |
29 | if((strchr(str, '.') != NULL) || (strchr(str, ',') != NULL)) { |
30 | char *p = str+strlen(str)-1; |
31 | while(*p == '0') *p-- = 0; |
32 | if((*p == '.')||(*p == ',')) |
33 | *p = 0; |
34 | } |
35 | strcat(str, "°"); |
36 | } |
37 | |
38 | void pos_lon_str(char *str, int len, double longitude) { |
39 | snprintf(str, len-1, "%.5f", longitude); |
40 | /* eliminate trailing zeros */ |
41 | if((strchr(str, '.') != NULL) || (strchr(str, ',') != NULL)) { |
42 | char *p = str+strlen(str)-1; |
43 | while(*p == '0') *p-- = 0; |
44 | if((*p == '.')||(*p == ',')) |
45 | *p = 0; |
46 | } |
47 | strcat(str, "°"); |
48 | } |
49 | |
50 | double pos_parse_lat(char *str) { |
51 | return g_strtod(str, NULL); |
52 | } |
53 | |
54 | double pos_parse_lon(char *str) { |
55 | return g_strtod(str, NULL); |
56 | } |
57 | |
58 | gboolean pos_lat_valid(double lat) { |
59 | return(!isnan(lat) && (lat >= -90.0) && (lat <= 90.0)); |
60 | } |
61 | |
62 | gboolean pos_lon_valid(double lon) { |
63 | return(!isnan(lon) && (lon >= -180.0) && (lon <= 180.0)); |
64 | } |
65 | |
66 | static gboolean mark(GtkWidget *widget, gboolean valid) { |
67 | gtk_widget_set_state(widget, valid?GTK_STATE_NORMAL:TAG_STATE); |
68 | return valid; |
69 | } |
70 | |
71 | static void callback_modified_lat(GtkWidget *widget, gpointer data ) { |
72 | double i = pos_parse_lat((char*)gtk_entry_get_text(GTK_ENTRY(widget))); |
73 | mark(widget, pos_lat_valid(i)); |
74 | } |
75 | |
76 | /* a entry that is colored red when being "active" */ |
77 | GtkWidget *pos_lat_entry_new(double lat) { |
78 | GdkColor color; |
79 | GtkWidget *widget = gtk_entry_new(); |
80 | gdk_color_parse("red", &color); |
81 | gtk_widget_modify_text(widget, TAG_STATE, &color); |
82 | |
83 | char str[32]; |
84 | pos_lat_str(str, sizeof(str), lat); |
85 | gtk_entry_set_text(GTK_ENTRY(widget), str); |
86 | |
87 | g_signal_connect(G_OBJECT(widget), "changed", |
88 | G_CALLBACK(callback_modified_lat), NULL); |
89 | |
90 | return widget; |
91 | } |
92 | |
93 | static void callback_modified_lon(GtkWidget *widget, gpointer data ) { |
94 | double i = pos_parse_lon((char*)gtk_entry_get_text(GTK_ENTRY(widget))); |
95 | mark(widget, pos_lon_valid(i)); |
96 | } |
97 | |
98 | /* a entry that is colored red when filled with invalid coordinate */ |
99 | GtkWidget *pos_lon_entry_new(double lon) { |
100 | GdkColor color; |
101 | GtkWidget *widget = gtk_entry_new(); |
102 | gdk_color_parse("#ff0000", &color); |
103 | gtk_widget_modify_text(widget, TAG_STATE, &color); |
104 | |
105 | char str[32]; |
106 | pos_lon_str(str, sizeof(str), lon); |
107 | gtk_entry_set_text(GTK_ENTRY(widget), str); |
108 | |
109 | g_signal_connect(G_OBJECT(widget), "changed", |
110 | G_CALLBACK(callback_modified_lon), NULL); |
111 | |
112 | return widget; |
113 | } |
114 | |
115 | double pos_lat_get(GtkWidget *widget) { |
116 | char *p = (char*)gtk_entry_get_text(GTK_ENTRY(widget)); |
117 | return pos_parse_lat(p); |
118 | } |
119 | |
120 | double pos_lon_get(GtkWidget *widget) { |
121 | char *p = (char*)gtk_entry_get_text(GTK_ENTRY(widget)); |
122 | return pos_parse_lon(p); |
123 | } |
124 | |
125 | void pos_lat_entry_set(GtkWidget *entry, double lat) { |
126 | char str[32]; |
127 | pos_lat_str(str, sizeof(str), lat); |
128 | gtk_entry_set_text(GTK_ENTRY(entry), str); |
129 | } |
130 | |
131 | void pos_lon_entry_set(GtkWidget *entry, double lon) { |
132 | char str[32]; |
133 | pos_lon_str(str, sizeof(str), lon); |
134 | gtk_entry_set_text(GTK_ENTRY(entry), str); |
135 | } |
136 | |
137 | GtkWidget *pos_lat_label_new(double lat) { |
138 | char str[32]; |
139 | pos_lat_str(str, sizeof(str), lat); |
140 | return gtk_label_new(str); |
141 | } |
142 | |
143 | GtkWidget *pos_lon_label_new(double lon) { |
144 | char str[32]; |
145 | pos_lon_str(str, sizeof(str), lon); |
146 | return gtk_label_new(str); |
147 | } |
148 | |
149 | void pos_lat_label_set(GtkWidget *label, double lat) { |
150 | char str[32]; |
151 | pos_lat_str(str, sizeof(str), lat); |
152 | gtk_label_set_text(GTK_LABEL(label), str); |
153 | } |
154 | |
155 | void pos_lon_label_set(GtkWidget *label, double lon) { |
156 | char str[32]; |
157 | pos_lon_str(str, sizeof(str), lon); |
158 | gtk_label_set_text(GTK_LABEL(label), str); |
159 | } |
160 | |
161 | void pos2lpos(bounds_t *bounds, pos_t *pos, lpos_t *lpos) { |
162 | lpos->x = POS_EQ_RADIUS * DEG2RAD(pos->lon); |
163 | lpos->y = POS_EQ_RADIUS * log(tan(M_PI/4 + DEG2RAD(pos->lat)/2)); |
164 | |
165 | lpos->x = ( lpos->x - bounds->center.x) * bounds->scale; |
166 | lpos->y = (-lpos->y + bounds->center.y) * bounds->scale; |
167 | } |
168 | |
169 | /* the maps center is special as it isn't offset (by itself) */ |
170 | void pos2lpos_center(pos_t *pos, lpos_t *lpos) { |
171 | lpos->x = POS_EQ_RADIUS * DEG2RAD(pos->lon); |
172 | lpos->y = POS_EQ_RADIUS * log(tan(M_PI/4 + DEG2RAD(pos->lat)/2)); |
173 | } |
174 | |
175 | void lpos2pos(bounds_t *bounds, lpos_t *lpos, pos_t *pos) { |
176 | lpos_t tmp = *lpos; |
177 | |
178 | tmp.x = ( tmp.x/bounds->scale) + bounds->center.x; |
179 | tmp.y = (-tmp.y/bounds->scale) + bounds->center.y; |
180 | |
181 | pos->lon = RAD2DEG(tmp.x / POS_EQ_RADIUS); |
182 | pos->lat = RAD2DEG(2 * atan(exp(tmp.y/POS_EQ_RADIUS)) - M_PI/2); |
183 | } |
184 | |
185 | void pos_dist_str(char *str, int len, double dist, gboolean is_mil) { |
186 | /* is this to be displayed as miles? */ |
187 | if(is_mil) dist /= KMPMIL; // kilometer per mile |
188 | |
189 | snprintf(str, len, "%.4f", dist); |
190 | /* eliminate trailing zeros */ |
191 | if((strchr(str, '.') != NULL) || (strchr(str, ',') != NULL)) { |
192 | char *p = str+strlen(str)-1; |
193 | while(*p == '0') *p-- = 0; |
194 | if((*p == '.')||(*p == ',')) |
195 | *p = 0; |
196 | } |
197 | } |
198 | |
199 | void pos_dist_entry_set(GtkWidget *entry, double dist, gboolean is_mil) { |
200 | char str[32]; |
201 | pos_dist_str(str, sizeof(str), dist, is_mil); |
202 | gtk_entry_set_text(GTK_ENTRY(entry), str); |
203 | } |
204 | |
205 | double pos_parse_dist(char *str, gboolean is_mil) { |
206 | return g_strtod(str, NULL) * (is_mil?KMPMIL:1.0); |
207 | } |
208 | |
209 | double pos_dist_get(GtkWidget *widget, gboolean is_mil) { |
210 | char *p = (char*)gtk_entry_get_text(GTK_ENTRY(widget)); |
211 | return pos_parse_dist(p, is_mil); |
212 | } |