Contents of /trunk/src/map-tool.c

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Revision 61 - (hide annotations)
Tue Aug 18 14:32:45 2009 UTC (14 years, 8 months ago) by harbaum
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osm-gps-map navigator
1 harbaum 33 /*
2 harbaum 55 * Copyright (C) 2008-2009 Till Harbaum <till@harbaum.org>.
3 harbaum 33 *
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 harbaum 61 #include "converter.h"
22 harbaum 34 #include <math.h> // for isnan
23 harbaum 33
24     #ifdef ENABLE_OSM_GPS_MAP
25     #include "osm-gps-map.h"
26     #endif
27    
28 harbaum 55 #define MAP_SOURCE OSM_GPS_MAP_SOURCE_OPENSTREETMAP
29 harbaum 48 #define GPS_DEFAULT_ZOOM 13
30    
31 harbaum 34 #define PROXY_KEY "/system/http_proxy/"
32    
33     static const char *get_proxy_uri(appdata_t *appdata) {
34     static char proxy_buffer[64] = "";
35 harbaum 33
36     /* use environment settings if preset */
37     const char *proxy = g_getenv("http_proxy");
38     if(proxy) {
39     printf("http_proxy: %s\n", proxy);
40     return proxy;
41     }
42    
43 harbaum 34 /* ------------- get proxy settings -------------------- */
44     if(gconf_client_get_bool(appdata->gconf_client,
45     PROXY_KEY "use_http_proxy", NULL)) {
46 harbaum 33
47 harbaum 34 /* we can savely ignore things like "ignore_hosts" since we */
48     /* are pretty sure not inside the net of one of our map renderers */
49     /* (unless the user works at google :-) */
50    
51     /* get basic settings */
52     char *host =
53     gconf_client_get_string(appdata->gconf_client, PROXY_KEY "host", NULL);
54     if(host) {
55     int port =
56     gconf_client_get_int(appdata->gconf_client, PROXY_KEY "port", NULL);
57 harbaum 33
58 harbaum 34 snprintf(proxy_buffer, sizeof(proxy_buffer),
59     "http://%s:%u", host, port);
60 harbaum 33
61 harbaum 34 g_free(host);
62     }
63 harbaum 35 return proxy_buffer;
64 harbaum 34 }
65    
66 harbaum 35 return NULL;
67 harbaum 33 }
68    
69     static void map_zoom(map_context_t *context, int step) {
70 harbaum 48 gint zoom;
71 harbaum 33 OsmGpsMap *map = OSM_GPS_MAP(context->widget);
72     g_object_get(map, "zoom", &zoom, NULL);
73     zoom = osm_gps_map_set_zoom(map, zoom+step);
74    
75     /* enable/disable zoom buttons as required */
76 harbaum 55 gtk_widget_set_sensitive(context->zoomin,
77     zoom < osm_gps_map_source_get_max_zoom(MAP_SOURCE));
78     gtk_widget_set_sensitive(context->zoomout,
79     zoom > osm_gps_map_source_get_min_zoom(MAP_SOURCE));
80 harbaum 48
81     /* save new zoom */
82     context->appdata->map.zoom = zoom;
83 harbaum 33 }
84    
85     static gboolean
86     cb_map_zoomin(GtkButton *button, map_context_t *context) {
87     map_zoom(context, +1);
88     return FALSE;
89     }
90    
91     static gboolean
92     cb_map_zoomout(GtkButton *button, map_context_t *context) {
93     map_zoom(context, -1);
94     return FALSE;
95     }
96    
97     static gboolean
98     cb_map_gps(GtkButton *button, map_context_t *context) {
99 harbaum 34 pos_t *refpos = get_pos(context->appdata);
100     if(refpos && !isnan(refpos->lat) && !isnan(refpos->lon)) {
101 harbaum 35 osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget),
102 harbaum 48 refpos->lat, refpos->lon, GPS_DEFAULT_ZOOM);
103 harbaum 35 } else {
104     /* no coordinates given: display the entire world */
105     osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget),
106     0.0, 0.0, 1);
107 harbaum 34 }
108 harbaum 33
109     return FALSE;
110     }
111    
112     static GtkWidget
113 harbaum 51 *map_add_button(int icon, GCallback cb, gpointer data,
114 harbaum 33 char *tooltip) {
115     GtkWidget *button = gtk_button_new();
116 harbaum 51 gtk_button_set_image(GTK_BUTTON(button), icon_get_widget(ICON_MISC, icon));
117 harbaum 33 g_signal_connect(button, "clicked", cb, data);
118     #ifndef USE_MAEMO
119     gtk_widget_set_tooltip_text(button, tooltip);
120     #endif
121     return button;
122     }
123    
124 harbaum 55 static int dist2pixel(map_context_t *context, float km, float lat) {
125     return 1000.0*km/osm_gps_map_get_scale(OSM_GPS_MAP(context->widget));
126     }
127    
128 harbaum 33 static gboolean map_gps_update(gpointer data) {
129     map_context_t *context = (map_context_t*)data;
130    
131 harbaum 51 /* get reference position ... */
132 harbaum 34 pos_t *refpos = get_pos(context->appdata);
133     gboolean ok = (refpos!= NULL) && !isnan(refpos->lat) && !isnan(refpos->lon);
134 harbaum 33
135 harbaum 51 /* ... and enable "goto" button if it's valid */
136 harbaum 34 gtk_widget_set_sensitive(context->gps, ok);
137    
138 harbaum 51 if(ok) {
139 harbaum 53 float heading = NAN;
140 harbaum 54 int radius = 0;
141 harbaum 51
142 harbaum 53 if(context->appdata->use_gps) {
143     heading = gps_get_heading(context->appdata);
144    
145     /* get error */
146     float eph = gps_get_eph(context->appdata);
147 harbaum 55 if(!isnan(eph))
148     radius = dist2pixel(context, eph/1000, refpos->lat);
149 harbaum 53 }
150    
151     g_object_set(context->widget, "gps-track-highlight-radius", radius, NULL);
152     osm_gps_map_draw_gps(OSM_GPS_MAP(context->widget),
153 harbaum 51 refpos->lat, refpos->lon, heading);
154     } else
155     osm_gps_map_clear_gps(OSM_GPS_MAP(context->widget));
156    
157 harbaum 33 return TRUE;
158     }
159    
160 harbaum 35 static gboolean on_map_configure(GtkWidget *widget,
161     GdkEventConfigure *event,
162     map_context_t *context) {
163 harbaum 33
164 harbaum 48 /* set default values if they are invalid */
165     if(!context->appdata->map.zoom ||
166     isnan(context->appdata->map.pos.lat) ||
167     isnan(context->appdata->map.pos.lon)) {
168     printf("no valid map position found\n");
169    
170     pos_t *refpos = get_pos(context->appdata);
171     if(refpos && !isnan(refpos->lat) && !isnan(refpos->lon)) {
172     /* use gps position if present */
173     context->appdata->map.pos = *refpos;
174     context->appdata->map.zoom = GPS_DEFAULT_ZOOM;
175     } else {
176     /* use world map otherwise */
177     context->appdata->map.pos.lat = 0.0;
178     context->appdata->map.pos.lon = 0.0;
179     context->appdata->map.zoom = 1;
180     }
181     }
182 harbaum 35
183 harbaum 48 /* jump to initial position */
184     osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget),
185     context->appdata->map.pos.lat,
186     context->appdata->map.pos.lon,
187     context->appdata->map.zoom);
188    
189 harbaum 35 return FALSE;
190     }
191    
192 harbaum 38 static void map_draw_cachelist(GtkWidget *map, cache_t *cache) {
193     while(cache) {
194     GdkPixbuf *icon = icon_get(ICON_CACHE_TYPE, cache->type);
195    
196     osm_gps_map_add_image(OSM_GPS_MAP(map),
197     cache->pos.lat, cache->pos.lon, icon);
198    
199     cache = cache->next;
200     }
201     }
202    
203 harbaum 41 static void
204     map_cachelist_nearest(cache_t *cache, pos_t *pos,
205     cache_t **result, float *distance) {
206     while(cache) {
207     float dist =
208     pow(cache->pos.lat - pos->lat, 2) +
209     pow(cache->pos.lon - pos->lon, 2);
210    
211     if(!(dist > *distance)) {
212     *result = cache;
213     *distance = dist;
214     }
215    
216     cache = cache->next;
217     }
218     }
219    
220     static cache_t *map_closest(map_context_t *context, pos_t *pos) {
221     cache_t *result = NULL;
222     float distance = NAN;
223    
224     #ifdef USE_MAEMO
225     if(!context->appdata->cur_gpx) {
226     #endif
227     /* search all geocaches */
228     gpx_t *gpx = context->appdata->gpx;
229     while(gpx) {
230     map_cachelist_nearest(gpx->cache, pos, &result, &distance);
231     gpx = gpx->next;
232     }
233     #ifdef USE_MAEMO
234     } else {
235     map_cachelist_nearest(context->appdata->cur_gpx->cache,
236     pos, &result, &distance);
237     }
238     #endif
239    
240     return result;
241     }
242    
243     /* translate between osm-gps-map positions and gpxview ones */
244     pos_t coord2pos(coord_t coo) {
245     pos_t pos;
246 harbaum 61 pos.lat = rad2deg(coo.rlat);
247     pos.lon = rad2deg(coo.rlon);
248 harbaum 41 return pos;
249     }
250    
251 harbaum 47 #define CLICK_FUZZ (24)
252 harbaum 42
253 harbaum 41 static gboolean
254     on_map_button_press_event(GtkWidget *widget,
255     GdkEventButton *event, map_context_t *context) {
256     OsmGpsMap *map = OSM_GPS_MAP(context->widget);
257    
258 harbaum 44 /* got a press event without release event? eat it! */
259     if(context->press_on != NULL) {
260     printf("PRESS: already\n");
261     return TRUE;
262     }
263    
264 harbaum 41 pos_t pos =
265 harbaum 42 coord2pos(osm_gps_map_get_co_ordinates(map, event->x, event->y));
266 harbaum 41
267 harbaum 42 cache_t *nearest = map_closest(context, &pos);
268     if(nearest) {
269     float dist = gpx_pos_get_distance(pos, nearest->pos, FALSE);
270 harbaum 44 if(dist2pixel(context, dist, nearest->pos.lat) < CLICK_FUZZ)
271 harbaum 42 context->press_on = nearest;
272     }
273 harbaum 44
274 harbaum 41 return FALSE;
275     }
276    
277 harbaum 58 static void
278     cairo_draw_pixbuf(cairo_t *cr, GdkPixbuf *buf, gint x, gint y) {
279     /* convert the pixbuf into something cairo can handle */
280    
281     // Create a new ImageSurface
282     cairo_surface_t *image_surface =
283     cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
284     gdk_pixbuf_get_width(buf),
285     gdk_pixbuf_get_height(buf));
286    
287     // Create the new Context for the ImageSurface
288     cairo_t *context = cairo_create(image_surface);
289    
290     // Draw the image on the new Context
291     gdk_cairo_set_source_pixbuf(context, buf, 0.0, 0.0);
292     cairo_paint(context);
293    
294     // now draw this onto the original context
295     cairo_set_source_surface(cr, image_surface, x, y);
296 harbaum 60
297 harbaum 58 cairo_paint(cr);
298     }
299    
300 harbaum 60 #define LINE_SKIP 7
301 harbaum 59
302 harbaum 58 static void
303     balloon_draw_cb(cairo_t *cr, OsmGpsMapRect_t *rect, gpointer data) {
304     cache_t *cache = (cache_t*)data;
305    
306     // printf("draw cb for \"%s\"\n", cache->name);
307    
308     #if 0
309     /* draw pink background to check clipping */
310     cairo_rectangle (cr, rect->x-20, rect->y-20, rect->w+40, rect->h+40);
311     cairo_set_source_rgba (cr, 1, 0, 0, 0.3);
312     cairo_fill_preserve (cr);
313     cairo_set_line_width (cr, 0);
314     cairo_stroke (cr);
315     #endif
316    
317     /* leave a little border top and left */
318     gint x = rect->x, y = rect->y;
319    
320     /* draw the cache type icon ... */
321     GdkPixbuf *icon = icon_get(ICON_CACHE_TYPE, cache->type);
322     cairo_draw_pixbuf(cr, icon, x, y);
323    
324     /* ... and right of it the waypoint id */
325     cairo_text_extents_t extents;
326    
327 harbaum 60 if(cache->id) {
328     cairo_select_font_face (cr, "Sans",
329     CAIRO_FONT_SLANT_NORMAL,
330     CAIRO_FONT_WEIGHT_BOLD);
331 harbaum 58
332 harbaum 60 cairo_set_font_size (cr, 20.0);
333     cairo_text_extents (cr, cache->id, &extents);
334 harbaum 58
335 harbaum 60 /* display id right of icon vertically centered */
336     x += gdk_pixbuf_get_width(icon) + 5;
337     y += (gdk_pixbuf_get_height(icon) + extents.height)/2;
338     cairo_move_to (cr, x, y);
339     cairo_set_source_rgba (cr, 0, 0, 0, 1);
340     cairo_show_text (cr, cache->id);
341     cairo_stroke (cr);
342 harbaum 59
343 harbaum 60 y += (gdk_pixbuf_get_height(icon) - extents.height)/2 + LINE_SKIP;
344     } else
345     y += gdk_pixbuf_get_height(icon);
346    
347 harbaum 59 /* return to the left border and below icon/text */
348     x = rect->x;
349    
350 harbaum 60 /* everything from here uses the same font */
351     cairo_select_font_face (cr, "Sans", CAIRO_FONT_SLANT_NORMAL,
352 harbaum 59 CAIRO_FONT_WEIGHT_NORMAL);
353     cairo_set_font_size (cr, 14.0);
354    
355 harbaum 60 if(cache->name) {
356     /* draw cache name */
357     cairo_text_extents (cr, cache->name, &extents);
358     y += extents.height;
359     cairo_move_to (cr, x, y);
360     cairo_set_source_rgba (cr, 0, 0, 0, 1);
361     cairo_show_text (cr, cache->name);
362     cairo_stroke (cr);
363 harbaum 58
364 harbaum 60 /* return to the left border and below text */
365     y += LINE_SKIP;
366     x = rect->x;
367     }
368    
369     if(cache->terrain) {
370     /* draw cache rating */
371     const char *terrain = "Terrain:";
372     icon = icon_get(ICON_STARS, (int)(cache->terrain*2-2));
373     cairo_text_extents (cr, _(terrain), &extents);
374     y += (gdk_pixbuf_get_height(icon) + extents.height)/2;
375    
376     /* draw "Terrain:" string */
377     cairo_move_to (cr, x, y);
378     cairo_set_source_rgba (cr, 0, 0, 0, 1);
379     cairo_show_text (cr, _(terrain));
380     cairo_stroke (cr);
381     x += extents.width + 2;
382    
383     /* draw terrain stars */
384     cairo_draw_pixbuf(cr, icon, x, y -
385     (gdk_pixbuf_get_height(icon) + extents.height)/2);
386    
387     x += gdk_pixbuf_get_width(icon) + LINE_SKIP;
388     y -= (gdk_pixbuf_get_height(icon) + extents.height)/2;
389     }
390    
391     if(cache->difficulty) {
392     const char *difficulty = "Difficulty:";
393     cairo_text_extents (cr, _(difficulty), &extents);
394     y += (gdk_pixbuf_get_height(icon) + extents.height)/2;
395    
396     /* draw "Difficulty:" string */
397     cairo_move_to (cr, x, y);
398     cairo_set_source_rgba (cr, 0, 0, 0, 1);
399     cairo_show_text (cr, _(difficulty));
400     cairo_stroke (cr);
401     x += extents.width + 2;
402    
403     icon = icon_get(ICON_STARS, (int)(cache->difficulty*2-2));
404     cairo_draw_pixbuf(cr, icon, x, y -
405     (gdk_pixbuf_get_height(icon) + extents.height)/2);
406     }
407 harbaum 58 }
408    
409 harbaum 41 static gboolean
410     on_map_button_release_event(GtkWidget *widget,
411     GdkEventButton *event, map_context_t *context) {
412 harbaum 48 OsmGpsMap *map = OSM_GPS_MAP(context->widget);
413    
414 harbaum 42 if(context->press_on) {
415 harbaum 57 coord_t coo;
416     coo = osm_gps_map_get_co_ordinates(map, event->x, event->y);
417    
418 harbaum 42 pos_t pos =
419     coord2pos(osm_gps_map_get_co_ordinates(map, event->x, event->y));
420 harbaum 41
421 harbaum 42 cache_t *nearest = map_closest(context, &pos);
422     if(nearest && nearest == context->press_on) {
423     float dist = gpx_pos_get_distance(pos, nearest->pos, FALSE);
424 harbaum 57 if(dist2pixel(context, dist, nearest->pos.lat) < CLICK_FUZZ) {
425    
426 harbaum 58 osm_gps_map_draw_balloon(map, nearest->pos.lat, nearest->pos.lon,
427     balloon_draw_cb, nearest);
428 harbaum 57 }
429 harbaum 42 }
430 harbaum 44 context->press_on = NULL;
431 harbaum 48 } else {
432     /* save new map position */
433     gfloat lat, lon;
434     g_object_get(map, "latitude", &lat, "longitude", &lon, NULL);
435     context->appdata->map.pos.lat = lat;
436     context->appdata->map.pos.lon = lon;
437 harbaum 41 }
438    
439     return FALSE;
440     }
441    
442 harbaum 56 static void on_window_destroy(GtkWidget *widget, map_context_t *context) {
443     appdata_t *appdata = context->appdata;
444    
445     printf("destroy map window\n");
446    
447 harbaum 48 /* save map parameters */
448     OsmGpsMap *map = OSM_GPS_MAP(context->widget);
449     gint zoom;
450     g_object_get(map, "zoom", &zoom, NULL);
451     context->appdata->map.zoom = zoom;
452 harbaum 44
453 harbaum 48 gfloat lat, lon;
454     g_object_get(map, "latitude", &lat, "longitude", &lon, NULL);
455     context->appdata->map.pos.lat = lat;
456     context->appdata->map.pos.lon = lon;
457    
458 harbaum 40 #if MAEMO_VERSION_MAJOR == 5
459     /* restore cur_view */
460     context->appdata->cur_view = context->old_view;
461 harbaum 56 #endif
462 harbaum 40
463     gtk_timeout_remove(context->handler_id);
464 harbaum 56
465 harbaum 40 g_free(context);
466 harbaum 56 appdata->map.context = NULL;
467 harbaum 40 }
468    
469 harbaum 33 void map(appdata_t *appdata) {
470 harbaum 56 map_context_t *context = NULL;
471    
472     /* if the map window already exists, just raise it */
473     if(appdata->map.context) {
474     gtk_window_present(GTK_WINDOW(appdata->map.context->window));
475     return;
476     }
477    
478     context = appdata->map.context = g_new0(map_context_t, 1);
479 harbaum 40 context->appdata = appdata;
480 harbaum 33
481 harbaum 41 GtkWidget *hbox = gtk_hbox_new(FALSE, 0);
482    
483     char *path = g_strdup_printf("%s/map/", appdata->image_path);
484     const char *proxy = get_proxy_uri(appdata);
485    
486     context->widget = g_object_new(OSM_TYPE_GPS_MAP,
487 harbaum 55 "map-source", MAP_SOURCE,
488     "tile-cache", path,
489     "auto-center", FALSE,
490     "record-trip-history", FALSE,
491     "show-trip-history", FALSE,
492     proxy?"proxy-uri":NULL, proxy,
493 harbaum 41 NULL);
494    
495     g_free(path);
496    
497     char *name = NULL;
498     #ifdef USE_MAEMO
499     if(!appdata->cur_gpx) {
500     #endif
501     /* draw all geocaches */
502     gpx_t *gpx = appdata->gpx;
503     while(gpx) {
504     map_draw_cachelist(context->widget, gpx->cache);
505     gpx = gpx->next;
506     }
507     name = g_strdup(_("all geocaches"));
508     #ifdef USE_MAEMO
509     } else {
510     map_draw_cachelist(context->widget, appdata->cur_gpx->cache);
511 harbaum 44 name = g_strdup(appdata->cur_gpx->name);
512 harbaum 41 }
513     #endif
514    
515     char *title = g_strdup_printf(_("Map - %s"), name);
516     g_free(name);
517    
518 harbaum 56 #ifdef USE_MAEMO
519     #ifdef USE_STACKABLE_WINDOW
520     context->window = hildon_stackable_window_new();
521 harbaum 40 #else
522 harbaum 56 context->window = hildon_window_new();
523     #endif
524     #else
525     context->window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
526     #endif
527 harbaum 33
528 harbaum 56 gtk_window_set_title(GTK_WINDOW(context->window), title);
529    
530 harbaum 33 #ifndef USE_MAEMO
531 harbaum 56 gtk_window_set_default_size(GTK_WINDOW(context->window), 640, 480);
532 harbaum 33 #endif
533    
534 harbaum 41 g_free(title);
535 harbaum 33
536 harbaum 41 g_signal_connect(G_OBJECT(context->widget), "configure-event",
537     G_CALLBACK(on_map_configure), context);
538 harbaum 33
539 harbaum 41 g_signal_connect(G_OBJECT(context->widget), "button-press-event",
540     G_CALLBACK(on_map_button_press_event), context);
541 harbaum 33
542 harbaum 40 g_signal_connect(G_OBJECT(context->widget), "button-release-event",
543     G_CALLBACK(on_map_button_release_event), context);
544 harbaum 33
545 harbaum 40 gtk_box_pack_start_defaults(GTK_BOX(hbox), context->widget);
546 harbaum 33 /* zoom button box */
547     GtkWidget *vbox = gtk_vbox_new(FALSE,0);
548    
549 harbaum 40 context->zoomin =
550 harbaum 51 map_add_button(10, G_CALLBACK(cb_map_zoomin),
551 harbaum 40 context, _("Zoom in"));
552     gtk_box_pack_start(GTK_BOX(vbox), context->zoomin, FALSE, FALSE, 0);
553 harbaum 33
554 harbaum 40 context->zoomout =
555 harbaum 51 map_add_button(11, G_CALLBACK(cb_map_zoomout),
556 harbaum 40 context, _("Zoom out"));
557     gtk_box_pack_start(GTK_BOX(vbox), context->zoomout, FALSE, FALSE, 0);
558 harbaum 33
559 harbaum 40 context->gps =
560 harbaum 51 map_add_button(9, G_CALLBACK(cb_map_gps),
561 harbaum 40 context, _("Jump to GPS position"));
562     gtk_widget_set_sensitive(context->gps, FALSE);
563 harbaum 56
564 harbaum 33 /* install handler for timed updates of the gps button */
565 harbaum 40 context->handler_id = gtk_timeout_add(1000, map_gps_update, context);
566     gtk_box_pack_start(GTK_BOX(vbox), context->gps, FALSE, FALSE, 0);
567 harbaum 33
568     gtk_box_pack_start(GTK_BOX(hbox), vbox, FALSE, FALSE, 0);
569    
570 harbaum 40 #if MAEMO_VERSION_MAJOR == 5
571     /* prevent some of the main screen things */
572     context->old_view = appdata->cur_view;
573     appdata->cur_view = NULL;
574 harbaum 56 #endif
575 harbaum 40
576 harbaum 56 g_signal_connect(G_OBJECT(context->window), "destroy",
577 harbaum 40 G_CALLBACK(on_window_destroy), context);
578    
579 harbaum 56 gtk_container_add(GTK_CONTAINER(context->window), hbox);
580     gtk_widget_show_all(GTK_WIDGET(context->window));
581 harbaum 33 }