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