Parent Directory | Revision Log
Various fremantle fixes
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 "gpxview.h" | ||
21 | #include <math.h> | ||
22 | |||
23 | #define STR_NAN "----" | ||
24 | |||
25 | typedef struct { | ||
26 | appdata_t *appdata; | ||
27 | |||
28 | GtkWidget *lon1, *lat1, *dist1, *dir1; | ||
29 | GtkWidget *lon2, *lat2; | ||
30 | |||
31 | GtkWidget *distance, *proj_lat, *proj_lon; | ||
32 | GtkWidget *middle_lat, *middle_lon; | ||
33 | } math_dialog_state_t; | ||
34 | |||
35 | static gboolean mark(GtkWidget *widget, gboolean valid) { | ||
36 | gtk_widget_set_state(widget, valid?GTK_STATE_NORMAL:TAG_STATE); | ||
37 | return valid; | ||
38 | } | ||
39 | |||
40 | /* a entry that is colored red when being "active" */ | ||
41 | static GtkWidget *gtk_red_entry_new(void) { | ||
42 | GdkColor color; | ||
43 | GtkWidget *widget = gtk_entry_new(); | ||
44 | gdk_color_parse("#ff0000", &color); | ||
45 | gtk_widget_modify_text(widget, TAG_STATE, &color); | ||
46 | return widget; | ||
47 | } | ||
48 | |||
49 | /* a comboboxentry that is colored red when being "active" */ | ||
50 | static GtkWidget *gtk_red_combo_box_entry_new_text(void) { | ||
51 | GdkColor color; | ||
52 | GtkWidget *widget = gtk_combo_box_entry_new_text(); | ||
53 | gdk_color_parse("#ff0000", &color); | ||
54 | gtk_widget_modify_text(GTK_BIN(widget)->child, TAG_STATE, &color); | ||
55 | return widget; | ||
56 | } | ||
57 | |||
58 | /* a label that is left aligned */ | ||
59 | static GtkWidget *gtk_left_label_new(char *str) { | ||
60 | GtkWidget *widget = gtk_label_new(str); | ||
61 | gtk_misc_set_alignment(GTK_MISC(widget), 0.0f, 0.5f); | ||
62 | return widget; | ||
63 | } | ||
64 | |||
65 | /* a label that is colored red when being "active" */ | ||
66 | static GtkWidget *gtk_red_label_new(char *str) { | ||
67 | GdkColor color; | ||
68 | GtkWidget *widget = gtk_left_label_new(str); | ||
69 | gdk_color_parse("#ff0000", &color); | ||
70 | gtk_widget_modify_fg(widget, TAG_STATE, &color); | ||
71 | return widget; | ||
72 | } | ||
73 | |||
74 | static GtkWidget *gtk_dir_entry_new(float val) { | ||
75 | char str[16]; | ||
76 | GtkWidget *w = gtk_red_entry_new(); | ||
77 | |||
78 | snprintf(str, sizeof(str), _("%.1f°"), val); | ||
79 | gtk_entry_set_text(GTK_ENTRY(w), str); | ||
80 | |||
81 | return w; | ||
82 | } | ||
83 | |||
84 | float pos_lat_eval_combo(GtkWidget *widget) { | ||
85 | char *p = (char*)gtk_combo_box_get_active_text(GTK_COMBO_BOX(widget)); | ||
86 | float val = pos_parse_lat(p); | ||
87 | mark(widget, !isnan(val)); | ||
88 | |||
89 | return val; | ||
90 | } | ||
91 | |||
92 | static float distance_eval(GtkWidget *widget, math_dialog_state_t *state) { | ||
93 | char *p = (char*)gtk_entry_get_text(GTK_ENTRY(widget)); | ||
94 | float val = distance_parse(p, state->appdata->imperial); | ||
95 | mark(widget, !isnan(val)); | ||
96 | |||
97 | return val; | ||
98 | } | ||
99 | |||
100 | float direction_eval(GtkWidget *widget) { | ||
101 | char *p = (char*)gtk_entry_get_text(GTK_ENTRY(widget)); | ||
102 | float val; | ||
103 | if(sscanf(p, _("%f°"), &val) != 1) | ||
104 | val = NAN; | ||
105 | |||
106 | mark(widget, !isnan(val)); | ||
107 | |||
108 | return val; | ||
109 | } | ||
110 | |||
111 | static void on_calc_clicked(GtkButton *button, gpointer user_data) { | ||
112 | math_dialog_state_t *state = (math_dialog_state_t*)user_data; | ||
113 | pos_t pos1, pos2; | ||
114 | gboolean pos1_ok = FALSE, pos2_ok = FALSE; | ||
115 | float dist1; | ||
116 | gboolean dist1_ok = FALSE; | ||
117 | float dir1; | ||
118 | gboolean dir1_ok = FALSE; | ||
119 | |||
120 | /* parse input */ | ||
121 | pos1.lat = lat_get(state->lat1); | ||
122 | pos1.lon = lon_get(state->lon1); | ||
123 | if(!isnan(pos1.lat) && !isnan(pos1.lon)) pos1_ok = TRUE; | ||
124 | |||
125 | pos2.lat = lat_get(state->lat2); | ||
126 | pos2.lon = lon_get(state->lon2); | ||
127 | if(!isnan(pos2.lat) && !isnan(pos2.lon)) pos2_ok = TRUE; | ||
128 | |||
129 | dist1 = distance_eval(state->dist1, state); | ||
130 | if(!isnan(dist1)) dist1_ok = TRUE; | ||
131 | |||
132 | dir1 = direction_eval(state->dir1); | ||
133 | if(!isnan(dir1)) dir1_ok = TRUE; | ||
134 | |||
135 | /* ------------------- do all calculations ------------------- */ | ||
136 | |||
137 | |||
138 | /* ------------------- distance of coo1 and coo2 ------------------- */ | ||
139 | if(mark(state->distance, pos1_ok && pos2_ok)) { | ||
140 | char str[32]; | ||
141 | float dist = gpx_pos_get_distance(pos1, pos2, state->appdata->imperial); | ||
142 | distance_str(str, sizeof(str), dist, state->appdata->imperial); | ||
143 | |||
144 | gtk_label_set_text(GTK_LABEL(state->distance), str); | ||
145 | } else | ||
146 | gtk_label_set_text(GTK_LABEL(state->distance), STR_NAN); | ||
147 | |||
148 | // N 53° 09.033' W 001° 50.666' 100km / 30° = N 53° 55.616, W001° 04.850 | ||
149 | /* ------------------- coordinate projection ---------------- */ | ||
150 | mark(state->proj_lat, pos1_ok && dist1_ok && dir1_ok); | ||
151 | if(mark(state->proj_lon, pos1_ok && dist1_ok && dir1_ok)) { | ||
152 | pos_t pro; | ||
153 | |||
154 | /* get great circle radius in miles/kilometers */ | ||
155 | float gcrad = state->appdata->imperial?3959.0:6371.0; | ||
156 | |||
157 | // from: http://www.movable-type.co.uk/scripts/latlong.html | ||
158 | pro.lat = asin(sin(pos1.lat/180*M_PI) * cos(dist1/gcrad) + | ||
159 | cos(pos1.lat/180*M_PI) * sin(dist1/gcrad) * | ||
160 | cos(dir1/180*M_PI) )/M_PI*180; | ||
161 | pro.lon = pos1.lon + atan2(sin(dir1/180*M_PI)*sin(dist1/gcrad)* | ||
162 | cos(pos1.lat/180*M_PI), | ||
163 | cos(dist1/gcrad)-sin(pos1.lat/180*M_PI)* | ||
164 | sin(pro.lat/180*M_PI))/M_PI*180; | ||
165 | pro.lon = fmodf(pro.lon+180,360) - 180; // normalise to -180...+180 | ||
166 | |||
167 | char str[16]; | ||
168 | pos_lat_str(str, sizeof(str), pro.lat); | ||
169 | gtk_label_set_text(GTK_LABEL(state->proj_lat), str); | ||
170 | pos_lon_str(str, sizeof(str), pro.lon); | ||
171 | gtk_label_set_text(GTK_LABEL(state->proj_lon), str); | ||
172 | |||
173 | if(!isnan(pro.lat) && !isnan(pro.lon)) | ||
174 | state->appdata->geomath = pro; | ||
175 | } else { | ||
176 | gtk_label_set_text(GTK_LABEL(state->proj_lat), STR_NAN); | ||
177 | gtk_label_set_text(GTK_LABEL(state->proj_lon), STR_NAN); | ||
178 | } | ||
179 | |||
180 | #if 0 | ||
181 | /* ------------ middle between both points ------------- */ | ||
182 | mark(state->middle_lat, pos1_ok && pos2_ok); | ||
183 | if(mark(state->middle_lon, pos1_ok && pos2_ok)) { | ||
184 | pos_t res; | ||
185 | |||
186 | float dlon = fabs(pos2.lon - pos1.lon)/180*M_PI; | ||
187 | |||
188 | /* http://mathforum.org/library/drmath/view/51822.html */ | ||
189 | res.lon = 180/M_PI * atan(cos(pos2.lat/180*M_PI)*sin(pos2.lon/180*M_PI)/ | ||
190 | (cos(pos1.lat/180*M_PI)+cos(pos2.lat/180*M_PI)*cos(pos2.lon/180*M_PI))); | ||
191 | res.lat = 180/M_PI * atan((sin(pos1.lat/180*M_PI)+sin(pos2.lat/180*M_PI))/ | ||
192 | sqrt(pow(cos(pos2.lat/180*M_PI)+cos(pos2.lat/180*M_PI)*cos(dlon),2)+ | ||
193 | pow(cos(pos2.lat/180*M_PI)*sin(dlon),2))); | ||
194 | |||
195 | char str1[32], str2[32]; | ||
196 | pos_lat_str(str1,sizeof(str1),res.lat); | ||
197 | pos_lon_str(str2,sizeof(str2),res.lon); | ||
198 | printf("pos = %s/%s\n", str1, str2); | ||
199 | } else { | ||
200 | gtk_label_set_text(GTK_LABEL(state->middle_lat), STR_NAN); | ||
201 | gtk_label_set_text(GTK_LABEL(state->middle_lon), STR_NAN); | ||
202 | } | ||
203 | #endif | ||
204 | } | ||
205 | |||
206 | static gint waypoint_changed_event(GtkWidget *widget, gpointer data ) { | ||
207 | math_dialog_state_t *state = (math_dialog_state_t*)data; | ||
208 | int wpt_idx = gtk_combo_box_get_active(GTK_COMBO_BOX(widget)); | ||
209 | pos_t *pos = NULL; | ||
210 | |||
211 | if(wpt_idx < 0) | ||
212 | return FALSE; | ||
213 | |||
214 | if(wpt_idx == 0) | ||
215 | pos = gps_get_pos(state->appdata); | ||
216 | #ifdef USE_MAEMO | ||
217 | else if(wpt_idx == 1) { | ||
218 | pos_t cache_pos = gpx_cache_pos(state->appdata->cur_cache); | ||
219 | pos = &cache_pos; | ||
220 | } else { | ||
221 | wpt_t *wpt = state->appdata->cur_cache->wpt; | ||
222 | while(wpt_idx > 2) { | ||
223 | g_assert(wpt != NULL); | ||
224 | wpt = wpt->next; | ||
225 | wpt_idx--; | ||
226 | } | ||
227 | pos = &wpt->pos; | ||
228 | } | ||
229 | #endif | ||
230 | |||
231 | if(pos) { | ||
232 | char str[32]; | ||
233 | pos_lat_str(str,sizeof(str),pos->lat); | ||
234 | gtk_entry_set_text(GTK_ENTRY(state->lat1), str); | ||
235 | pos_lon_str(str,sizeof(str),pos->lon); | ||
236 | gtk_entry_set_text(GTK_ENTRY(state->lon1), str); | ||
237 | } else { | ||
238 | gtk_entry_set_text(GTK_ENTRY(state->lat1), STR_NAN); | ||
239 | gtk_entry_set_text(GTK_ENTRY(state->lon1), STR_NAN); | ||
240 | } | ||
241 | |||
242 | mark(state->lat1, pos != NULL); | ||
243 | mark(state->lon1, pos != NULL); | ||
244 | |||
245 | return FALSE; | ||
246 | } | ||
247 | |||
248 | void geomath_dialog(appdata_t *appdata) { | ||
249 | static pos_t pos1 = { 0.0, 0.0 }, pos2 = { 0.0, 0.0 }; | ||
250 | static float dist1 = 0.0; | ||
251 | static float dir1 = 0.0; | ||
252 | static gboolean is_imperial = FALSE; | ||
253 | |||
254 | math_dialog_state_t state; | ||
255 | char str[32]; | ||
256 | |||
257 | /* this is quite ugly. It would be nice to run the entire system on */ | ||
258 | /* one specific system (e.g. metric) and only convert for in- and output */ | ||
259 | if(!appdata->imperial && is_imperial) | ||
260 | dist1 *= 6371.0/3959.0; /* we just switched to metric */ | ||
261 | if(appdata->imperial && !is_imperial) | ||
262 | dist1 *= 3959.0/6371.0; /* we just switched to imperial */ | ||
263 | is_imperial = appdata->imperial; | ||
264 | |||
265 | state.appdata = appdata; | ||
266 | |||
267 | #ifdef USE_MAEMO | ||
268 | if(appdata->cur_cache) | ||
269 | printf("current cache is %s\n", appdata->cur_cache->id); | ||
270 | else | ||
271 | printf("no current cache\n"); | ||
272 | #endif | ||
273 | |||
274 | GtkWidget *dialog = gtk_dialog_new_with_buttons(_("Geomath"), | ||
275 | GTK_WINDOW(appdata->window), | ||
276 | // GTK_DIALOG_NO_SEPARATOR | | ||
277 | GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT, | ||
278 | GTK_STOCK_CLOSE, GTK_RESPONSE_CLOSE, | ||
279 | NULL); | ||
280 | |||
281 | #if defined(USE_MAEMO) && defined(HILDON_HELP) | ||
282 | hildon_help_dialog_help_enable(GTK_DIALOG(dialog), HELP_ID_GEOMATH, | ||
283 | appdata->osso_context); | ||
284 | #endif | ||
285 | |||
286 | gtk_window_set_default_size(GTK_WINDOW(dialog), DIALOG_WIDTH, DIALOG_HEIGHT); | ||
287 | |||
288 | /* do geomath dialog */ | ||
289 | GtkWidget *hbox = gtk_hbox_new(FALSE, 0); | ||
290 | |||
291 | /* ------------------------- input area ------------------------- */ | ||
292 | GtkWidget *table = gtk_table_new(5, 3, FALSE); | ||
293 | gtk_table_set_col_spacing(GTK_TABLE(table), 1, 20); | ||
294 | |||
295 | gtk_table_attach_defaults(GTK_TABLE(table), gtk_label_new(_("Coordinate 1")), 1, 2, 0, 1); | ||
296 | gtk_table_attach_defaults(GTK_TABLE(table), gtk_label_new(_("Coordinate 2")), 2, 3, 0, 1); | ||
297 | gtk_table_attach_defaults(GTK_TABLE(table), gtk_left_label_new(_("Latitude:")), 0, 1, 1, 2); | ||
298 | |||
299 | GtkWidget *cbox = gtk_red_combo_box_entry_new_text(); | ||
300 | gtk_combo_box_append_text(GTK_COMBO_BOX(cbox), _("GPS")); | ||
301 | |||
302 | #ifdef USE_MAEMO | ||
303 | if(appdata->cur_cache) { | ||
304 | gtk_combo_box_append_text(GTK_COMBO_BOX(cbox), appdata->cur_cache->id); | ||
305 | wpt_t *wpt = appdata->cur_cache->wpt; | ||
306 | while(wpt) { | ||
307 | gtk_combo_box_append_text(GTK_COMBO_BOX(cbox), wpt->id); | ||
308 | wpt = wpt->next; | ||
309 | } | ||
310 | } | ||
311 | #endif | ||
312 | |||
313 | state.lat1 = GTK_BIN(cbox)->child; | ||
314 | pos_lat_str(str, sizeof(str), pos1.lat); | ||
315 | gtk_entry_set_text(GTK_ENTRY(state.lat1), str); | ||
316 | |||
317 | gtk_signal_connect(GTK_OBJECT(cbox), "changed", | ||
318 | (GtkSignalFunc)waypoint_changed_event, &state); | ||
319 | gtk_table_attach_defaults(GTK_TABLE(table), cbox, 1,2,1,2); | ||
320 | |||
321 | |||
322 | gtk_table_attach_defaults(GTK_TABLE(table), state.lat2 = lat_entry_new(pos2.lat), 2, 3, 1, 2); | ||
323 | gtk_table_attach_defaults(GTK_TABLE(table), gtk_left_label_new(_("Longitude:")), 0, 1, 2, 3); | ||
324 | gtk_table_attach_defaults(GTK_TABLE(table), state.lon1 = lon_entry_new(pos1.lon), 1, 2, 2, 3); | ||
325 | gtk_table_attach_defaults(GTK_TABLE(table), state.lon2 = lon_entry_new(pos2.lon), 2, 3, 2, 3); | ||
326 | gtk_table_attach_defaults(GTK_TABLE(table), gtk_left_label_new(_("Distance:")), 0, 1, 3, 4); | ||
327 | gtk_table_attach_defaults(GTK_TABLE(table), state.dist1 = dist_entry_new(dist1, appdata->imperial), 1, 2, 3, 4); | ||
328 | gtk_table_attach_defaults(GTK_TABLE(table), gtk_left_label_new(_("Direction:")), 0, 1, 4, 5); | ||
329 | gtk_table_attach_defaults(GTK_TABLE(table), state.dir1 = gtk_dir_entry_new(dir1), 1, 2, 4, 5); | ||
330 | |||
331 | gtk_box_pack_start(GTK_BOX(hbox), table, TRUE, TRUE, 0); | ||
332 | |||
333 | gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->vbox), hbox, TRUE, TRUE, 0); | ||
334 | |||
335 | /* ------------------------- do-it-button ------------------------- */ | ||
336 | |||
337 | hbox = gtk_hbox_new(FALSE, 0); | ||
338 | GtkWidget *button = gtk_button_new_with_label(_("Calculate!")); | ||
339 | harbaum | 133 | #if defined(USE_MAEMO) && (MAEMO_VERSION_MAJOR == 5) |
340 | hildon_gtk_widget_set_theme_size(button, | ||
341 | (HILDON_SIZE_FINGER_HEIGHT | HILDON_SIZE_AUTO_WIDTH)); | ||
342 | #endif | ||
343 | harbaum | 1 | gtk_box_pack_start(GTK_BOX(hbox), button, TRUE, FALSE, 0); |
344 | gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->vbox), hbox, TRUE, FALSE, 0); | ||
345 | g_signal_connect(button, "clicked", (GCallback)on_calc_clicked, &state); | ||
346 | |||
347 | /* ------------------------- output area ------------------------- */ | ||
348 | |||
349 | table = gtk_table_new(3, 3, FALSE); | ||
350 | |||
351 | gtk_table_attach_defaults(GTK_TABLE(table), gtk_left_label_new(_("Distance = ")), | ||
352 | 0, 1, 0, 1); | ||
353 | gtk_table_attach_defaults(GTK_TABLE(table), state.distance = gtk_red_label_new(STR_NAN), | ||
354 | 1, 3, 0, 1); | ||
355 | |||
356 | gtk_table_attach_defaults(GTK_TABLE(table), gtk_left_label_new(_("Projection = ")), | ||
357 | 0, 1, 1, 2); | ||
358 | gtk_table_attach_defaults(GTK_TABLE(table), state.proj_lat = gtk_red_label_new(STR_NAN), | ||
359 | 1, 2, 1, 2); | ||
360 | gtk_table_attach_defaults(GTK_TABLE(table), state.proj_lon = gtk_red_label_new(STR_NAN), | ||
361 | 2, 3, 1, 2); | ||
362 | #if 0 | ||
363 | gtk_table_attach_defaults(GTK_TABLE(table), gtk_left_label_new(_("Middle = ")), | ||
364 | 0, 1, 2, 3); | ||
365 | gtk_table_attach_defaults(GTK_TABLE(table), state.middle_lat = gtk_red_label_new(STR_NAN), | ||
366 | 1, 2, 2, 3); | ||
367 | gtk_table_attach_defaults(GTK_TABLE(table), state.middle_lon = gtk_red_label_new(STR_NAN), | ||
368 | 2, 3, 2, 3); | ||
369 | #endif | ||
370 | |||
371 | gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->vbox), table, TRUE, TRUE, 0); | ||
372 | |||
373 | |||
374 | gtk_dialog_set_default_response(GTK_DIALOG(dialog), GTK_RESPONSE_CLOSE); | ||
375 | |||
376 | gtk_widget_show_all(dialog); | ||
377 | gtk_dialog_run(GTK_DIALOG(dialog)); | ||
378 | |||
379 | /* copy values back to local static variables so they re-appear if */ | ||
380 | /* the dialog is re-opened, convert illegal values (NAN) to 0 */ | ||
381 | |||
382 | pos1.lat = lat_get(state.lat1); if(isnan(pos1.lat)) pos1.lat=0; | ||
383 | pos1.lon = lon_get(state.lon1); if(isnan(pos1.lon)) pos1.lon=0; | ||
384 | pos2.lat = lat_get(state.lat2); if(isnan(pos2.lat)) pos2.lat=0; | ||
385 | pos2.lon = lon_get(state.lon2); if(isnan(pos2.lon)) pos2.lon=0; | ||
386 | dist1 = distance_eval(state.dist1, &state); if(isnan(dist1)) dist1=0; | ||
387 | dir1 = direction_eval(state.dir1); if(isnan(dir1)) dir1=0; | ||
388 | |||
389 | gtk_widget_destroy(dialog); | ||
390 | } |