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1 | harbaum | 1 | /* |
2 | * Copyright (C) 2008 Till Harbaum <till@harbaum.org>. | ||
3 | * | ||
4 | * This file is part of GPXView. | ||
5 | * | ||
6 | * GPXView 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 | * GPXView 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 GPXView. If not, see <http://www.gnu.org/licenses/>. | ||
18 | */ | ||
19 | |||
20 | #include <math.h> | ||
21 | #include <string.h> | ||
22 | #include <ctype.h> | ||
23 | |||
24 | #include "gpxview.h" | ||
25 | |||
26 | char strlastchr(char *str) { | ||
27 | return str[strlen(str)]-1; | ||
28 | } | ||
29 | |||
30 | /* make sure the entire path "dir" exists and create it if not */ | ||
31 | int checkdir(char *dir) { | ||
32 | struct stat filestat; | ||
33 | char *p = dir, tmp; | ||
34 | |||
35 | /* don't try to create root dir */ | ||
36 | if(p[0] == '/') p++; | ||
37 | |||
38 | do { | ||
39 | while(*p && *p != '/') p++; | ||
40 | tmp = *p; | ||
41 | *p = 0; | ||
42 | |||
43 | int err = stat(dir, &filestat); | ||
44 | if(err) { | ||
45 | if(mkdir(dir, S_IRWXU) != 0) { | ||
46 | perror("mkdir()"); | ||
47 | *p++ = tmp; | ||
48 | return -1; | ||
49 | } | ||
50 | } else { | ||
51 | if(!filestat.st_mode & S_IFDIR) { | ||
52 | printf("File %s exists and is _no_ directory\n", dir); | ||
53 | *p++ = tmp; | ||
54 | return -1; | ||
55 | } | ||
56 | } | ||
57 | |||
58 | *p++ = tmp; | ||
59 | } while(tmp && strchr(p, '/')); | ||
60 | |||
61 | return 0; | ||
62 | } | ||
63 | |||
64 | void pos_lat_str(char *str, int len, float latitude) { | ||
65 | char *c = _("N"); | ||
66 | float integral, fractional; | ||
67 | |||
68 | harbaum | 13 | if(isnan(latitude)) |
69 | str[0] = 0; | ||
70 | else { | ||
71 | if(latitude < 0) { latitude = fabs(latitude); c = _("S"); } | ||
72 | fractional = modff(latitude, &integral); | ||
73 | harbaum | 1 | |
74 | harbaum | 13 | snprintf(str, len, "%s %02d° %06.3f'", c, (int)integral, fractional*60.0); |
75 | } | ||
76 | harbaum | 1 | } |
77 | |||
78 | GtkWidget *pos_lat(float latitude, int size, int strikethrough) { | ||
79 | char str[32]; | ||
80 | |||
81 | pos_lat_str(str, sizeof(str), latitude); | ||
82 | return gtk_label_attrib(str, size, strikethrough); | ||
83 | } | ||
84 | |||
85 | void pos_lon_str(char *str, int len, float longitude) { | ||
86 | char *c = _("E"); | ||
87 | float integral, fractional; | ||
88 | |||
89 | harbaum | 13 | if(isnan(longitude)) |
90 | str[0] = 0; | ||
91 | else { | ||
92 | if(longitude < 0) { longitude = fabs(longitude); c = _("W"); } | ||
93 | fractional = modff(longitude, &integral); | ||
94 | harbaum | 1 | |
95 | harbaum | 13 | snprintf(str, len, "%s %03d° %06.3f'", c, (int)integral, fractional*60.0); |
96 | } | ||
97 | harbaum | 1 | } |
98 | |||
99 | GtkWidget *pos_lon(float longitude, int size, int strikethrough) { | ||
100 | char str[32]; | ||
101 | |||
102 | pos_lon_str(str, sizeof(str), longitude); | ||
103 | return gtk_label_attrib(str, size, strikethrough); | ||
104 | } | ||
105 | |||
106 | float pos_parse_lat(char *str) { | ||
107 | int integral_int; | ||
108 | float fractional; | ||
109 | char c; | ||
110 | |||
111 | if(sscanf(str, "%c %d° %f'", &c, &integral_int, &fractional) == 3) { | ||
112 | c = toupper(c); | ||
113 | |||
114 | if(c != 'S' && c != 'N') | ||
115 | return NAN; | ||
116 | |||
117 | /* prevent -0.0 */ | ||
118 | if(!integral_int && (fractional == 0.0)) | ||
119 | return 0.0; | ||
120 | |||
121 | return ((c == 'S')?-1:+1) * (integral_int + fractional/60.0); | ||
122 | } | ||
123 | |||
124 | return NAN; | ||
125 | } | ||
126 | |||
127 | float pos_parse_lon(char *str) { | ||
128 | int integral_int; | ||
129 | float fractional; | ||
130 | char c; | ||
131 | |||
132 | if(sscanf(str, "%c %d° %f'", &c, &integral_int, &fractional) == 3) { | ||
133 | c = toupper(c); | ||
134 | |||
135 | /* O is german "Ost" for "East" */ | ||
136 | if(c != 'E' && c != 'W' && c != 'O') | ||
137 | return NAN; | ||
138 | |||
139 | /* prevent -0.0 */ | ||
140 | if(!integral_int && (fractional == 0.0)) | ||
141 | return 0.0; | ||
142 | |||
143 | return ((c == 'W')?-1:+1) * (integral_int + fractional/60.0); | ||
144 | } | ||
145 | |||
146 | return NAN; | ||
147 | } | ||
148 | |||
149 | const char *pos_get_bearing_str(pos_t from, pos_t to) { | ||
150 | static const char *bear_str[]={ | ||
151 | "N", "NE", "E", "SE", "S", "SW", "W", "NW" }; | ||
152 | int idx = (gpx_pos_get_bearing(from, to)+22.5)/45.0; | ||
153 | /* make sure we stay in icon bounds */ | ||
154 | while(idx < 0) idx += 8; | ||
155 | while(idx > 7) idx -= 8; | ||
156 | return _(bear_str[idx]); | ||
157 | } | ||
158 | |||
159 | /* the maemo font size is quite huge, so we adjust some fonts */ | ||
160 | /* differently on maemo and non-maemo. Basically "BIG" does nothing */ | ||
161 | /* on maemo and "SMALL" only does something on maemo */ | ||
162 | #ifdef USE_MAEMO | ||
163 | #define MARKUP_SMALL "<span size='small'>%s</span>" | ||
164 | GtkWidget *gtk_label_small(char *str) { | ||
165 | GtkWidget *label = gtk_label_new(""); | ||
166 | char *markup = g_markup_printf_escaped(MARKUP_SMALL, str); | ||
167 | gtk_label_set_markup(GTK_LABEL(label), markup); | ||
168 | g_free(markup); | ||
169 | return label; | ||
170 | } | ||
171 | #else | ||
172 | #define MARKUP_BIG "<span size='x-large'>%s</span>" | ||
173 | GtkWidget *gtk_label_big(char *str) { | ||
174 | GtkWidget *label = gtk_label_new(""); | ||
175 | char *markup = g_markup_printf_escaped(MARKUP_BIG, str); | ||
176 | gtk_label_set_markup(GTK_LABEL(label), markup); | ||
177 | g_free(markup); | ||
178 | return label; | ||
179 | } | ||
180 | #endif | ||
181 | |||
182 | void gtk_label_attrib_set(GtkWidget *label, | ||
183 | char *str, int size, int strikethrough) { | ||
184 | char format[80]; | ||
185 | |||
186 | snprintf(format, sizeof(format), "<span%s%s%s>%%s</span>", | ||
187 | #ifdef USE_MAEMO | ||
188 | (size==SIZE_SMALL)?" size='small'":"", | ||
189 | #else | ||
190 | (size==SIZE_BIG)?" size='x-large'":"", | ||
191 | #endif | ||
192 | strikethrough?" strikethrough='yes'":"", | ||
193 | (strikethrough==STRIKETHROUGH_RED)?" strikethrough_color='red'":""); | ||
194 | |||
195 | char *markup = g_markup_printf_escaped(format, str); | ||
196 | // printf("markup = %s\n", markup); | ||
197 | gtk_label_set_markup(GTK_LABEL(label), markup); | ||
198 | g_free(markup); | ||
199 | } | ||
200 | |||
201 | GtkWidget *gtk_label_attrib(char *str, int size, int strikethrough) { | ||
202 | GtkWidget *label = gtk_label_new(""); | ||
203 | gtk_label_attrib_set(label, str, size, strikethrough); | ||
204 | return label; | ||
205 | } | ||
206 | |||
207 | GtkWidget *gtk_button_attrib(char *str, int size, int strikethrough) { | ||
208 | GtkWidget *button = gtk_button_new_with_label(""); | ||
209 | gtk_label_attrib_set(gtk_bin_get_child(GTK_BIN(button)), | ||
210 | str, size, strikethrough); | ||
211 | return button; | ||
212 | } | ||
213 | |||
214 | void textbox_disable(GtkWidget *widget) { | ||
215 | gtk_editable_set_editable(GTK_EDITABLE(widget), FALSE); | ||
216 | gtk_widget_set_sensitive(widget, FALSE); | ||
217 | } | ||
218 | |||
219 | void textbox_enable(GtkWidget *widget) { | ||
220 | gtk_widget_set_sensitive(widget, TRUE); | ||
221 | gtk_editable_set_editable(GTK_EDITABLE(widget), TRUE); | ||
222 | } | ||
223 | |||
224 | pos_t *get_pos(appdata_t *appdata) { | ||
225 | pos_t *pos = &appdata->home; | ||
226 | |||
227 | if(appdata->active_location) { | ||
228 | int i = appdata->active_location-1; | ||
229 | location_t *loc = appdata->location; | ||
230 | while(i--) loc = loc->next; | ||
231 | pos = &loc->pos; | ||
232 | } | ||
233 | |||
234 | if(appdata->use_gps) { | ||
235 | pos = gps_get_pos(appdata); | ||
236 | |||
237 | if(!pos) pos = &appdata->gps; /* use saved position */ | ||
238 | else appdata->gps = *pos; /* save position */ | ||
239 | } | ||
240 | return pos; | ||
241 | } | ||
242 | |||
243 | void distance_str(char *str, int len, float dist, gboolean imperial) { | ||
244 | if(imperial) { | ||
245 | /* 1 mil = 1760 yd = 5280 ft ... */ | ||
246 | if(dist<0.018) snprintf(str, len, "%.1f ft", dist*5280.0); | ||
247 | else if(dist<0.055) snprintf(str, len, "%.1f yd", dist*1760.0); | ||
248 | else if(dist<0.55) snprintf(str, len, "%.0f yd", dist*1760.0); | ||
249 | else if(dist<10.0) snprintf(str, len, "%.2f mi", dist); | ||
250 | else if(dist<100.0) snprintf(str, len, "%.1f mi", dist); | ||
251 | else snprintf(str, len, "%.0f mi", dist); | ||
252 | } else { | ||
253 | if(dist<0.01) snprintf(str, len, "%.2f m", dist*1000.0); | ||
254 | else if(dist<0.1) snprintf(str, len, "%.1f m", dist*1000.0); | ||
255 | else if(dist<1.0) snprintf(str, len, "%.0f m", dist*1000.0); | ||
256 | else if(dist<100.0) snprintf(str, len, "%.1f km", dist); | ||
257 | else snprintf(str, len, "%.0f km", dist); | ||
258 | } | ||
259 | } | ||
260 | |||
261 | /* return distance in miles or kilometers */ | ||
262 | float distance_parse(char *str, gboolean imperial) { | ||
263 | char unit[4]; | ||
264 | float val = NAN; | ||
265 | |||
266 | if(sscanf(str, "%f %3s", &val, unit) == 2) { | ||
267 | gboolean fimp = FALSE; | ||
268 | |||
269 | if(strcasecmp(unit, "ft") == 0) { fimp = TRUE; val /= 5280.0; } | ||
270 | else if(strcasecmp(unit, "yd") == 0) { fimp = TRUE; val /= 1760.0; } | ||
271 | else if(strcasecmp(unit, "mi") == 0) { fimp = TRUE; } | ||
272 | else if(strcasecmp(unit, "m") == 0) { fimp = FALSE; val /= 1000.0; } | ||
273 | else if(strcasecmp(unit, "km") == 0) { fimp = FALSE; } | ||
274 | else val = NAN; | ||
275 | |||
276 | /* found imperial and metric requested? convert miles into kilometers */ | ||
277 | if(fimp & !imperial) val *= 1.609344; | ||
278 | |||
279 | /* found metric and imperial requested? convert kilometers into miles */ | ||
280 | if(!fimp & imperial) val /= 1.609344; | ||
281 | } | ||
282 | return val; | ||
283 | } | ||
284 | |||
285 | static gboolean mark(GtkWidget *widget, gboolean valid) { | ||
286 | gtk_widget_set_state(widget, valid?GTK_STATE_NORMAL:TAG_STATE); | ||
287 | return valid; | ||
288 | } | ||
289 | |||
290 | static void callback_modified_lat(GtkWidget *widget, gpointer data ) { | ||
291 | float i = pos_parse_lat((char*)gtk_entry_get_text(GTK_ENTRY(widget))); | ||
292 | mark(widget, !isnan(i)); | ||
293 | } | ||
294 | |||
295 | /* a entry that is colored red when being "active" */ | ||
296 | GtkWidget *lat_entry_new(float lat) { | ||
297 | GdkColor color; | ||
298 | GtkWidget *widget = gtk_entry_new(); | ||
299 | gdk_color_parse("#ff0000", &color); | ||
300 | gtk_widget_modify_text(widget, TAG_STATE, &color); | ||
301 | |||
302 | char str[32]; | ||
303 | pos_lat_str(str, sizeof(str), lat); | ||
304 | gtk_entry_set_text(GTK_ENTRY(widget), str); | ||
305 | |||
306 | g_signal_connect(G_OBJECT(widget), "changed", | ||
307 | G_CALLBACK(callback_modified_lat), NULL); | ||
308 | |||
309 | return widget; | ||
310 | } | ||
311 | |||
312 | static void callback_modified_lon(GtkWidget *widget, gpointer data ) { | ||
313 | float i = pos_parse_lon((char*)gtk_entry_get_text(GTK_ENTRY(widget))); | ||
314 | mark(widget, !isnan(i)); | ||
315 | } | ||
316 | |||
317 | /* a entry that is colored red when filled with invalid coordinate */ | ||
318 | GtkWidget *lon_entry_new(float lon) { | ||
319 | GdkColor color; | ||
320 | GtkWidget *widget = gtk_entry_new(); | ||
321 | gdk_color_parse("#ff0000", &color); | ||
322 | gtk_widget_modify_text(widget, TAG_STATE, &color); | ||
323 | |||
324 | char str[32]; | ||
325 | pos_lon_str(str, sizeof(str), lon); | ||
326 | gtk_entry_set_text(GTK_ENTRY(widget), str); | ||
327 | |||
328 | g_signal_connect(G_OBJECT(widget), "changed", | ||
329 | G_CALLBACK(callback_modified_lon), NULL); | ||
330 | |||
331 | return widget; | ||
332 | } | ||
333 | |||
334 | |||
335 | float lat_get(GtkWidget *widget) { | ||
336 | char *p = (char*)gtk_entry_get_text(GTK_ENTRY(widget)); | ||
337 | return pos_parse_lat(p); | ||
338 | } | ||
339 | |||
340 | float lon_get(GtkWidget *widget) { | ||
341 | char *p = (char*)gtk_entry_get_text(GTK_ENTRY(widget)); | ||
342 | return pos_parse_lon(p); | ||
343 | } | ||
344 | |||
345 | static void callback_modified_dist(GtkWidget *widget, gpointer data ) { | ||
346 | /* don't care for metric/imperial since we only want to know if this */ | ||
347 | /* is parseable at all */ | ||
348 | float i = distance_parse((char*)gtk_entry_get_text(GTK_ENTRY(widget)), FALSE); | ||
349 | mark(widget, !isnan(i)); | ||
350 | } | ||
351 | |||
352 | /* a entry that is colored red when filled with invalid distance */ | ||
353 | GtkWidget *dist_entry_new(float dist, gboolean mil) { | ||
354 | GdkColor color; | ||
355 | GtkWidget *widget = gtk_entry_new(); | ||
356 | gdk_color_parse("#ff0000", &color); | ||
357 | gtk_widget_modify_text(widget, TAG_STATE, &color); | ||
358 | |||
359 | char str[32]; | ||
360 | distance_str(str, sizeof(str), dist, mil); | ||
361 | gtk_entry_set_text(GTK_ENTRY(widget), str); | ||
362 | |||
363 | g_signal_connect(G_OBJECT(widget), "changed", | ||
364 | G_CALLBACK(callback_modified_dist), NULL); | ||
365 | |||
366 | return widget; | ||
367 | } | ||
368 | |||
369 | float dist_get(GtkWidget *widget, gboolean mil) { | ||
370 | char *p = (char*)gtk_entry_get_text(GTK_ENTRY(widget)); | ||
371 | return distance_parse(p, mil); | ||
372 | } | ||
373 | |||
374 | #ifndef USE_MAEMO | ||
375 | #ifdef ENABLE_BROWSER_INTERFACE | ||
376 | #include <libgnome/gnome-url.h> | ||
377 | |||
378 | int browser_url(appdata_t *appdata, char *url) { | ||
379 | /* taken from gnome-open, part of libgnome */ | ||
380 | GError *err = NULL; | ||
381 | gnome_url_show(url, &err); | ||
382 | return 0; | ||
383 | } | ||
384 | #endif | ||
385 | #endif |