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

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revision 33 by harbaum, Tue Jul 28 13:21:40 2009 UTC revision 220 by harbaum, Sat Nov 28 14:20:28 2009 UTC
# Line 1  Line 1 
1  /*  /*
2   * Copyright (C) 2008 Till Harbaum <till@harbaum.org>.   * Copyright (C) 2008-2009 Till Harbaum <till@harbaum.org>.
3   *   *
4   * This file is part of GPXView.   * This file is part of GPXView.
5   *   *
# Line 17  Line 17 
17   * along with GPXView.  If not, see <http://www.gnu.org/licenses/>.   * along with GPXView.  If not, see <http://www.gnu.org/licenses/>.
18   */   */
19    
20    /*
21     * http://topo.geofabrik.de/relief/${z}/${x}/${y}.png  8-15
22     * http://topo.geofabrik.de/trail/${z}/${x}/${y}.png   8-15
23     */
24    
25    /*
26     * TODO:
27     * - make semi-transparent caches selectable
28     */
29    
30  #include "gpxview.h"  #include "gpxview.h"
31    #include "converter.h"
32    #include <math.h>    // for isnan
33    
34  #ifdef ENABLE_OSM_GPS_MAP  #ifdef ENABLE_OSM_GPS_MAP
35  #include "osm-gps-map.h"  #include "osm-gps-map.h"
36    #include "osm-gps-map-osd-classic.h"
37    #endif
38    
39    #if defined(USE_MAEMO) && (MAEMO_VERSION_MAJOR == 5)
40    #include <gdk/gdkx.h>
41    #include <X11/Xatom.h>
42  #endif  #endif
43    
44  typedef struct {  /* default values */
45    GtkWidget *widget;  #define MAP_SOURCE  OSM_GPS_MAP_SOURCE_OPENCYCLEMAP
46    GtkWidget *zoomin, *zoomout, *gps;  #define GPS_DEFAULT_ZOOM 13
   gint handler_id;  
 } map_context_t;  
47    
48  static const char *get_proxy_uri(void) {  #define PROXY_KEY  "/system/http_proxy/"
49    static char proxy_buffer[64];  
50    static const char *get_proxy_uri(appdata_t *appdata) {
51      static char proxy_buffer[64] = "";
52    
53    /* use environment settings if preset */    /* use environment settings if preset */
54    const char *proxy = g_getenv("http_proxy");    const char *proxy = g_getenv("http_proxy");
55    if(proxy) {    if(proxy) {
56      printf("http_proxy: %s\n", proxy);      printf("map http proxy from env: %s\n", proxy);
57      return proxy;      return proxy;
58    }    }
59    
60  #if 0    /* ------------- get proxy settings -------------------- */
61    /* otherwise try settings */    if(gconf_client_get_bool(appdata->gconf_client,
62    if(!settings || !settings->proxy ||                             PROXY_KEY "use_http_proxy", NULL)) {
63       !settings->proxy->host) return NULL;  
64        /* we can savely ignore things like "ignore_hosts" since we */
65        /* are pretty sure not inside the net of one of our map renderers */
66        /* (unless the user works at google :-) */
67    
68        /* get basic settings */
69        char *host =
70          gconf_client_get_string(appdata->gconf_client, PROXY_KEY "host", NULL);
71        if(host) {
72          int port =
73            gconf_client_get_int(appdata->gconf_client, PROXY_KEY "port", NULL);
74    
75          snprintf(proxy_buffer, sizeof(proxy_buffer),
76                   "http://%s:%u", host, port);
77          printf("map http proxy from gconf: %s\n ", proxy_buffer);
78    
79          g_free(host);
80        }
81        return proxy_buffer;
82      }
83    
84    snprintf(proxy_buffer, sizeof(proxy_buffer), "%s%s:%u",    return NULL;
85             strncmp(settings->proxy->host, "http://", 7)?"http://":"",  }
            settings->proxy->host, settings->proxy->port);  
86    
87    proxy_buffer[sizeof(proxy_buffer)-1] = 0;  static void
88    printf("gconf_proxy: %s\n", proxy_buffer);  cb_map_gps(osd_button_t but, map_context_t *context) {
 #endif  
89    
90    return proxy_buffer;    if(but == OSD_GPS) {
91        pos_t *refpos = get_pos(context->appdata);
92        if(refpos && !isnan(refpos->lat) && !isnan(refpos->lon)) {
93          gint zoom;
94          g_object_get(OSM_GPS_MAP(context->widget), "zoom", &zoom, NULL);
95          if(zoom < 10)
96            osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget),
97                                      refpos->lat, refpos->lon, GPS_DEFAULT_ZOOM);
98          else
99            osm_gps_map_set_center(OSM_GPS_MAP(context->widget),
100                                   refpos->lat, refpos->lon);
101    
102          /* re-enable centering */
103          g_object_set(context->widget, "auto-center", TRUE, NULL);
104        } else {
105          /* no coordinates given: display the entire world */
106          osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget),
107                                    0.0, 0.0, 1);
108        }
109      }
110  }  }
111    
112  static void map_zoom(map_context_t *context, int step) {  static int dist2pixel(map_context_t *context, float km, float lat) {
113    int zoom;    return 1000.0*km/osm_gps_map_get_scale(OSM_GPS_MAP(context->widget));
114    OsmGpsMap *map = OSM_GPS_MAP(context->widget);  }
115    g_object_get(map, "zoom", &zoom, NULL);  
116    zoom = osm_gps_map_set_zoom(map, zoom+step);  static gboolean map_gps_update(gpointer data) {
117      map_context_t *context = (map_context_t*)data;
118      static gboolean goto_is_enabled = FALSE;
119    
120    /* enable/disable zoom buttons as required */    /* get reference position ... */
121    gtk_widget_set_sensitive(context->zoomin, zoom<17);    pos_t *refpos = get_pos(context->appdata);
122    gtk_widget_set_sensitive(context->zoomout, zoom>1);    gboolean ok = (refpos!= NULL) && !isnan(refpos->lat) && !isnan(refpos->lon);
123    
124      /* ... and enable "goto" button if it's valid */
125      if(ok != goto_is_enabled) {
126        osm_gps_map_osd_enable_gps (OSM_GPS_MAP(context->widget),
127                    OSM_GPS_MAP_OSD_CALLBACK(ok?cb_map_gps:NULL), context);
128        goto_is_enabled = ok;
129      }
130    
131      if(ok) {
132        float heading = NAN;
133        int radius = 0;
134    
135        if(context->appdata->use_gps) {
136          heading = gps_get_heading(context->appdata);
137    
138          /* get error */
139          float eph = gps_get_eph(context->appdata);
140          if(!isnan(eph))
141            radius = dist2pixel(context, eph/1000, refpos->lat);
142        }
143    
144        /* TODO: in order to save energy: only draw if state actually changed */
145    
146        g_object_set(context->widget, "gps-track-highlight-radius", radius, NULL);
147        osm_gps_map_draw_gps(OSM_GPS_MAP(context->widget),
148                             refpos->lat, refpos->lon, heading);
149      } else
150        osm_gps_map_clear_gps(OSM_GPS_MAP(context->widget));
151    
152      return TRUE;
153  }  }
154    
155  static gboolean  static void map_draw_cache(GtkWidget *map, cache_t *cache, gboolean semi) {
156  cb_map_zoomin(GtkButton *button, map_context_t *context) {    int type = semi?ICON_CACHE_TYPE_SEMI:ICON_CACHE_TYPE;
157    map_zoom(context, +1);  
158      GdkPixbuf *icon = icon_get(type, cache->type);
159      GdkPixbuf *over = NULL;
160    
161      if(cache->mine)                   over = icon_get(type, 14);
162      else if(cache->found)             over = icon_get(type, 12);
163      else if(cache->notes) {
164        if(cache->notes->found)         over = icon_get(type, 12);
165        else if(cache->notes->override) over = icon_get(type, 11);
166        else                            over = icon_get(type, 13);
167      }
168    
169      pos_t *pos = &cache->pos;
170      /* check if there's also an overwritten coordinate */
171      if(cache->notes && cache->notes->override)
172        pos = &cache->notes->pos;
173    
174      if(!isnan(pos->lat) && !isnan(pos->lon)) {
175        osm_gps_map_add_image(OSM_GPS_MAP(map),
176                              pos->lat, pos->lon, icon);
177        if(over)
178          osm_gps_map_add_image(OSM_GPS_MAP(map),
179                                pos->lat, pos->lon, over);
180      }
181    }
182    
183    static void map_draw_wpt(GtkWidget *map, cache_t *cache, wpt_t *wpt) {
184      /* only draw wpts that don't equal the main point */
185      if(pos_differ(&cache->pos, &wpt->pos)) {
186        if(!isnan(wpt->pos.lat) && !isnan(wpt->pos.lon))  {
187          GdkPixbuf *icon =
188            icon_get(ICON_WPT, (wpt->sym!=WPT_SYM_UNKNOWN)?
189                     wpt->sym:WPT_SYM_REFPOINT);
190    
191          osm_gps_map_add_image(OSM_GPS_MAP(map),
192                                wpt->pos.lat, wpt->pos.lon, icon);
193        }
194      }
195    }
196    
197    static void map_draw_gpx(appdata_t *appdata, cache_display_t *caches,
198                             GtkWidget *map, gpx_t *gpx,
199                             cache_t *nav, gboolean semi) {
200      if(!gpx->notes_loaded) {
201        notes_load_all(appdata, gpx);
202        gpx->notes_loaded = TRUE;
203      }
204    
205      cache_t *cache = gpx->cache;
206      while(cache) {
207        /* search if we have that cache already in our list/displayed */
208        int i=0;
209        while(caches[i].id && (strcmp(caches[i].id, cache->id) != 0))
210          i++;
211    
212        if(!caches[i].id) {
213          /* if nav is given draw all other caches semitransparent. */
214          /* if nav is not given do what semi sais */
215          map_draw_cache(map, cache, nav?(cache != nav):semi);
216          caches[i].id = cache->id;
217    
218          /* also draw waypoints of nav cache */
219          if(nav && cache == nav) {
220            wpt_t *wpt = cache->wpt;
221            while(wpt) {
222              map_draw_wpt(map, cache, wpt);
223              wpt = wpt->next;
224            }
225          }
226        }
227    
228        cache = cache->next;
229      }
230    }
231    
232    /* draw geocaches and set window title */
233    static void map_setup(map_context_t *context) {
234      char *name = NULL;
235    
236      int cache_num = gpx_total_caches_global(context->appdata->gpx);
237    
238      if(context->caches_displayed && (cache_num != context->cache_list_len)) {
239        //    printf("re-alloc because %p %d/%d\n", context->caches_displayed,
240        //     cache_num, context->cache_list_len);
241        g_free(context->caches_displayed);
242        context->caches_displayed = NULL;
243        context->cache_list_len = 0;
244      }
245    
246      /* allocate buffer */
247      if(cache_num && !context->caches_displayed) {
248        context->cache_list_len = cache_num;
249        context->caches_displayed = g_new0(cache_display_t, cache_num+1);
250        printf("allocated space to handle %d map icons\n", cache_num);
251      }
252    
253      if(!context->appdata->cur_gpx && !context->appdata->cur_cache) {
254        if(context->state != MAP_ALL) {
255          printf("map_setup(ALL)\n");
256    
257          /* clear any pending balloon */
258          context->balloon = NULL;
259          osm_gps_map_osd_clear_balloon (OSM_GPS_MAP(context->widget));
260    
261    #ifdef OSD_NAV
262          /* no navigation in this mode */
263          osm_gps_map_osd_clear_nav (OSM_GPS_MAP(context->widget));
264    #endif
265    
266          /* clear all existing cache images */
267          osm_gps_map_clear_images (OSM_GPS_MAP(context->widget));
268          memset(context->caches_displayed, 0,
269                 (cache_num+1) * sizeof(cache_display_t));
270    
271          /* draw all geocaches and none is semi-transparent */
272          gpx_t *gpx = context->appdata->gpx;
273          while(gpx) {
274            map_draw_gpx(context->appdata, context->caches_displayed,
275                         context->widget, gpx, NULL, FALSE);
276            gpx = gpx->next;
277          }
278    
279          {
280            int i=0;
281            while(context->caches_displayed[i].id) i++;
282            printf("number of caches actually displayed: %d\n", i);
283          }
284    
285          name = g_strdup(_("all"));
286          context->state = MAP_ALL;
287        }
288      } else if(!context->appdata->cur_cache) {
289        if(context->state != MAP_GPX) {
290          printf("map_setup(GPX)\n");
291    
292          /* clear any pending balloon */
293          context->balloon = NULL;
294          osm_gps_map_osd_clear_balloon (OSM_GPS_MAP(context->widget));
295    
296    #ifdef OSD_NAV
297          /* no navigation in this mode */
298          osm_gps_map_osd_clear_nav (OSM_GPS_MAP(context->widget));
299    #endif
300    
301          /* clear all existing cache images */
302          osm_gps_map_clear_images (OSM_GPS_MAP(context->widget));
303          memset(context->caches_displayed, 0,
304                 (cache_num+1) * sizeof(cache_display_t));
305    
306          /* draw all geocaches and all other gpx files are semi-transparent */
307          map_draw_gpx(context->appdata, context->caches_displayed,
308                       context->widget, context->appdata->cur_gpx, NULL, FALSE);
309    
310          gpx_t *gpx = context->appdata->gpx;
311          while(gpx) {
312            if(gpx != context->appdata->cur_gpx)
313              map_draw_gpx(context->appdata, context->caches_displayed,
314                           context->widget, gpx, NULL, TRUE);
315    
316            gpx = gpx->next;
317          }
318    
319          name = g_strdup(context->appdata->cur_gpx->name);
320          context->state = MAP_GPX;
321        }
322      } else {
323        cache_t *cache = context->appdata->cur_cache;
324    
325        printf("map_setup(CACHE)\n");
326    
327        /* clear any pending balloon */
328        context->balloon = NULL;
329        osm_gps_map_osd_clear_balloon (OSM_GPS_MAP(context->widget));
330    
331        /* clear all existing ccahe images */
332        osm_gps_map_clear_images (OSM_GPS_MAP(context->widget));
333        memset(context->caches_displayed, 0,
334               (cache_num+1) * sizeof(cache_display_t));
335    
336        /* draw all geocaches and all but selected one are semi-transparent */
337        gpx_t *gpx = context->appdata->gpx;
338        while(gpx) {
339          map_draw_gpx(context->appdata, context->caches_displayed,
340                       context->widget, gpx, cache, FALSE);
341          gpx = gpx->next;
342        }
343    
344        name = g_strdup(cache->name);
345        context->state = MAP_CACHE;
346    
347        /* navigation in this mode! */
348        pos_t cpos = gpx_cache_pos(cache);
349    
350    #ifdef OSD_NAV
351        osm_gps_map_osd_draw_nav (OSM_GPS_MAP(context->widget),
352                                  context->appdata->imperial,
353                                  cpos.lat, cpos.lon, cache->name);
354    #else
355    #warning OSD_NAV not defined!
356    #endif
357      }
358    
359      /* also mark geomath position */
360    
361      /* remove all existing appearances of this icon first */
362      osm_gps_map_remove_image(OSM_GPS_MAP(context->widget),
363                               icon_get(ICON_MISC, 6));
364    
365      if(!isnan(context->appdata->geomath.lat) &&
366         !isnan(context->appdata->geomath.lon))  {
367    
368        osm_gps_map_add_image(OSM_GPS_MAP(context->widget),
369                              context->appdata->geomath.lat,
370                              context->appdata->geomath.lon,
371                              icon_get(ICON_MISC, 6));
372      }
373    
374      if(name) {
375        char *title = g_strdup_printf(_("Map - %s"), name);
376        g_free(name);
377    
378        gtk_window_set_title(GTK_WINDOW(context->window), title);
379    
380        g_free(title);
381      } else
382        printf("map_setup(keep)\n");
383    }
384    
385    static gboolean on_map_configure(GtkWidget *widget,
386                                     GdkEventConfigure *event,
387                                     map_context_t *context) {
388    
389      /* for some reason there's a configure event with 1/1 */
390      /* on diablo. We just ignore this! */
391    
392      printf("on_map_configure %d %d\n",
393             widget->allocation.width,
394             widget->allocation.height);
395    
396      if(!context->map_complete &&
397         (widget->allocation.width > 100) &&
398         (widget->allocation.height > 100)) {
399    
400        /* setup cache state */
401        map_setup(context);
402    
403        /* set default values if they are invalid */
404        if(!context->appdata->map.zoom ||
405           isnan(context->appdata->map.pos.lat) ||
406           isnan(context->appdata->map.pos.lon)) {
407          printf("no valid map position found\n");
408    
409          pos_t *refpos = get_pos(context->appdata);
410          if(refpos && !isnan(refpos->lat) && !isnan(refpos->lon)) {
411            printf("use refpos\n");
412    
413            /* use gps position if present */
414            context->appdata->map.pos = *refpos;
415            context->appdata->map.zoom = GPS_DEFAULT_ZOOM;
416          } else {
417            printf("use zero pos\n");
418    
419            /* use world map otherwise */
420            context->appdata->map.pos.lat = 0.0;
421            context->appdata->map.pos.lon = 0.0;
422            context->appdata->map.zoom = 1;
423          }
424        }
425    
426        /* jump to initial position */
427        printf("osm_gps_map_set_mapcenter(%f,%f,%d)\n",
428               context->appdata->map.pos.lat,
429               context->appdata->map.pos.lon,
430               context->appdata->map.zoom);
431    
432        osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget),
433                                  context->appdata->map.pos.lat,
434                                  context->appdata->map.pos.lon,
435                                  context->appdata->map.zoom);
436        context->map_complete = TRUE;
437      }
438    
439    return FALSE;    return FALSE;
440  }  }
441    
442    static void
443    map_cachelist_nearest(cache_t *cache, pos_t *pos,
444                          cache_t **result, float *distance) {
445    
446      while(cache) {
447        pos_t cpos = gpx_cache_pos(cache);
448    
449        float dist =
450          pow(cpos.lat - pos->lat, 2) +
451          pow(cpos.lon - pos->lon, 2);
452    
453        if(!(dist > *distance)) {
454          *result = cache;
455          *distance = dist;
456        }
457    
458        cache = cache->next;
459      }
460    }
461    
462    static cache_t *map_closest(map_context_t *context, pos_t *pos) {
463      cache_t *result = NULL;
464      float distance = NAN;
465    
466      if(!context->appdata->cur_gpx && !context->appdata->cur_cache) {
467        /* search all geocaches */
468        gpx_t *gpx = context->appdata->gpx;
469        while(gpx) {
470          map_cachelist_nearest(gpx->cache, pos, &result, &distance);
471          gpx = gpx->next;
472        }
473      } else if(context->appdata->cur_gpx) {
474        map_cachelist_nearest(context->appdata->cur_gpx->cache,
475                              pos, &result, &distance);
476      } else
477        result = context->appdata->cur_gpx->cache;
478    
479      return result;
480    }
481    
482    /* translate between osm-gps-map positions and gpxview ones */
483    pos_t coord2pos(coord_t coo) {
484      pos_t pos;
485      pos.lat = rad2deg(coo.rlat);
486      pos.lon = rad2deg(coo.rlon);
487      return pos;
488    }
489    
490    #define CLICK_FUZZ (24)
491    
492  static gboolean  static gboolean
493  cb_map_zoomout(GtkButton *button, map_context_t *context) {  on_map_button_press_event(GtkWidget *widget,
494    map_zoom(context, -1);                              GdkEventButton *event, map_context_t *context) {
495    
496      OsmGpsMap *map = OSM_GPS_MAP(context->widget);
497    
498      /* check if we actually clicked parts of the OSD */
499      if(osm_gps_map_osd_check(map, event->x, event->y) != OSD_NONE)
500        return FALSE;
501    
502      /* got a press event without release event? eat it! */
503      if(context->press_on != NULL) {
504        printf("PRESS: already\n");
505        return FALSE;
506      }
507    
508      pos_t pos =
509        coord2pos(osm_gps_map_get_co_ordinates(map, event->x, event->y));
510    
511      cache_t *nearest = map_closest(context, &pos);
512      if(nearest) {
513        pos_t cpos = gpx_cache_pos(nearest);
514    
515        float dist = gpx_pos_get_distance(pos, cpos, FALSE);
516        if(dist2pixel(context, dist, cpos.lat) < CLICK_FUZZ)
517          context->press_on = nearest;
518      }
519    
520    return FALSE;    return FALSE;
521  }  }
522    
523    static void
524    cairo_draw_pixbuf(cairo_t *cr, GdkPixbuf *buf, gint x, gint y) {
525      /* convert the pixbuf into something cairo can handle */
526    
527      // Create a new ImageSurface
528      cairo_surface_t *image_surface =
529        cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
530                                   gdk_pixbuf_get_width(buf),
531                                   gdk_pixbuf_get_height(buf));
532    
533      // Create the new Context for the ImageSurface
534      g_assert(image_surface);
535      cairo_t *context = cairo_create(image_surface);
536    
537      // Draw the image on the new Context
538      gdk_cairo_set_source_pixbuf(context, buf, 0.0, 0.0);
539      cairo_paint(context);
540    
541      // now draw this onto the original context
542      cairo_set_source_surface(cr, image_surface, x, y);
543    
544      cairo_paint(cr);
545    }
546    
547    #ifndef BIG_BALLOONS
548    #define ICON_SIZE  ICON_CACHE_TYPE
549    #else
550    #define ICON_SIZE  ICON_CACHE_TYPE_1_5X
551    #endif
552    
553    #ifndef BIG_BALLOONS
554    #define FONT_SIZE 14.0
555    #else
556    #define FONT_SIZE 22.0
557    #endif
558    #define LINE_SKIP  (FONT_SIZE/4)
559    
560    
561    static void
562    balloon_cb(osm_gps_map_balloon_event_t *event, gpointer data) {
563      printf("balloon event: ");
564    
565      map_context_t *context = (map_context_t*)data;
566      cache_t *cache = context->balloon;
567    
568      if(event->type == OSM_GPS_MAP_BALLOON_EVENT_TYPE_DRAW) {
569        printf("draw\n");
570    
571    #if 0
572        /* draw pink background to check clipping */
573        cairo_rectangle (event->data.draw.cr,
574                         event->data.draw.rect->x-20, event->data.draw.rect->y-20,
575                         event->data.draw.rect->w+40, event->data.draw.rect->h+40);
576        cairo_set_source_rgba (event->data.draw.cr, 1, 0, 0, 0.3);
577        cairo_fill_preserve (event->data.draw.cr);
578        cairo_set_line_width (event->data.draw.cr, 0);
579        cairo_stroke (event->data.draw.cr);
580    #endif
581    
582        /* leave a little border top and left */
583        gint x = event->data.draw.rect->x, y = event->data.draw.rect->y;
584    
585        /* draw the cache type icon ... */
586        GdkPixbuf *icon = icon_get(ICON_SIZE, cache->type);
587        cairo_draw_pixbuf(event->data.draw.cr, icon, x, y);
588    
589        if(cache->notes && cache->notes->override) {
590          GdkPixbuf *over = icon_get(ICON_SIZE, 11);
591          cairo_draw_pixbuf(event->data.draw.cr, over, x, y);
592        }
593    
594        /* ... and right of it the waypoint id */
595        cairo_text_extents_t extents;
596    
597        if(cache->id) {
598          cairo_select_font_face (event->data.draw.cr, "Sans",
599                                  CAIRO_FONT_SLANT_NORMAL,
600                                  CAIRO_FONT_WEIGHT_BOLD);
601    
602    #ifndef BIG_BALLOONS
603          cairo_set_font_size (event->data.draw.cr, 20.0);
604    #else
605          cairo_set_font_size (event->data.draw.cr, 36.0);
606    #endif
607    
608          cairo_text_extents (event->data.draw.cr, cache->id, &extents);
609    
610          /* display id right of icon vertically centered */
611          x += gdk_pixbuf_get_width(icon) + 5;
612          y += (gdk_pixbuf_get_height(icon) + extents.height)/2;
613          cairo_move_to (event->data.draw.cr, x, y);
614          cairo_set_source_rgba (event->data.draw.cr, 0, 0, 0, 1);
615          cairo_show_text (event->data.draw.cr, cache->id);
616          cairo_stroke (event->data.draw.cr);
617    
618          y += (gdk_pixbuf_get_height(icon) - extents.height)/2 + LINE_SKIP;
619        } else
620          y += gdk_pixbuf_get_height(icon);
621    
622        /* return to the left border and below icon/text */
623        x = event->data.draw.rect->x;
624    
625        /* everything from here uses the same font */
626        cairo_select_font_face (event->data.draw.cr, "Sans",
627                                CAIRO_FONT_SLANT_NORMAL,
628                                CAIRO_FONT_WEIGHT_NORMAL);
629    
630        cairo_set_font_size (event->data.draw.cr, FONT_SIZE);
631    
632        if(cache->name) {
633          /* draw cache name */
634          cairo_text_extents (event->data.draw.cr, cache->name, &extents);
635          cairo_move_to (event->data.draw.cr, x, y - extents.y_bearing);
636          cairo_set_source_rgba (event->data.draw.cr, 0, 0, 0, 1);
637          cairo_show_text (event->data.draw.cr, cache->name);
638          cairo_stroke (event->data.draw.cr);
639    
640          /* return to the left border and below text */
641          y += LINE_SKIP + FONT_SIZE;
642          x = event->data.draw.rect->x;
643        }
644    
645        if(cache->terrain) {
646          int text_y = 0, icon_y = 0;
647    
648          /* draw cache rating */
649          const char *terrain = "Terrain:";
650          icon = icon_get(ICON_STARS, (int)(cache->terrain*2-2));
651          cairo_text_extents (event->data.draw.cr, _(terrain), &extents);
652    
653          if(gdk_pixbuf_get_height(icon) > FONT_SIZE)
654            text_y = (gdk_pixbuf_get_height(icon) - FONT_SIZE)/2;
655          else
656            icon_y = (FONT_SIZE - gdk_pixbuf_get_height(icon))/2;
657    
658          /* draw "Terrain:" string */
659          cairo_move_to (event->data.draw.cr, x, y - extents.y_bearing + text_y);
660          cairo_set_source_rgba (event->data.draw.cr, 0, 0, 0, 1);
661          cairo_show_text (event->data.draw.cr, _(terrain));
662          cairo_stroke (event->data.draw.cr);
663          x += extents.width + 2;
664    
665          /* draw terrain stars */
666          cairo_draw_pixbuf(event->data.draw.cr, icon, x, y + icon_y);
667    
668          x += gdk_pixbuf_get_width(icon) + FONT_SIZE/2;
669        }
670    
671        if(cache->difficulty) {
672          int text_y = 0, icon_y = 0;
673    
674          const char *difficulty = "Difficulty:";
675          icon = icon_get(ICON_STARS, (int)(cache->difficulty*2-2));
676          cairo_text_extents (event->data.draw.cr, _(difficulty), &extents);
677    
678          if(gdk_pixbuf_get_height(icon) > FONT_SIZE)
679            text_y = (gdk_pixbuf_get_height(icon) - FONT_SIZE)/2;
680          else
681            icon_y = (FONT_SIZE - gdk_pixbuf_get_height(icon))/2;
682    
683          /* draw "Difficulty:" string */
684          cairo_move_to (event->data.draw.cr, x, y - extents.y_bearing + text_y);
685          cairo_set_source_rgba (event->data.draw.cr, 0, 0, 0, 1);
686          cairo_show_text (event->data.draw.cr, _(difficulty));
687          cairo_stroke (event->data.draw.cr);
688          x += extents.width + 2;
689    
690          cairo_draw_pixbuf(event->data.draw.cr, icon, x, y + icon_y);
691        }
692    
693        /* draw container info */
694        /* TODO ... */
695    
696    
697      } else if(event->type == OSM_GPS_MAP_BALLOON_EVENT_TYPE_CLICK) {
698        printf("click %s event at %d %d\n",
699               event->data.click.down?"down":"up",
700               event->data.click.x, event->data.click.y);
701    
702        /* make the main screen jump to that cache */
703        if(!event->data.click.down) {
704          if(context->appdata->cur_cache) {
705            printf("ERROR: no current cache should be visible!\n");
706          } else {
707            gpx_t *is_in = NULL;
708    
709            if(!context->appdata->cur_gpx) {
710              printf("click while in \"all\" view\n");
711    
712              /* we first need to figure out which gpx file this cache */
713              /* is in so we can open it first */
714              gpx_t *gpx = context->appdata->gpx;
715              while(gpx && !is_in) {
716                cache_t *cur = gpx->cache;
717                while(cur && !is_in) {
718                  if(cur == cache)
719                    is_in = gpx;
720                  cur = cur->next;
721                }
722                gpx = gpx->next;
723              }
724    
725              if(is_in)
726                gpxlist_goto_cachelist(context->appdata, is_in);
727    
728            } else
729              /* the simple case: there already is an open gpx file and */
730              /* we just jump into the "cache" view */
731              is_in = context->appdata->cur_gpx;
732    
733            if(is_in) {
734              printf("selecting %s in %s\n",
735                     cache->id,
736                     context->appdata->cur_gpx->name);
737    
738              cachelist_goto_cache(context->appdata, cache);
739    
740              /* give focus to main screen (important for maemo) */
741              printf("raising main window\n");
742              gtk_window_present(GTK_WINDOW(context->appdata->window));
743            }
744          }
745        }
746      } else if(event->type == OSM_GPS_MAP_BALLOON_EVENT_TYPE_REMOVED) {
747        printf("removed\n");
748        context->balloon = NULL;
749      }
750    }
751    
752  static gboolean  static gboolean
753  cb_map_gps(GtkButton *button, map_context_t *context) {  on_map_button_release_event(GtkWidget *widget,
754                                GdkEventButton *event, map_context_t *context) {
755      OsmGpsMap *map = OSM_GPS_MAP(context->widget);
756    
757    //  osm_gps_map_set_center(OSM_GPS_MAP(context->widget),    /* in "MAP_CACHE" state only one cache is visible */
758    //                     DEG2RAD(pos.lat), DEG2RAD(pos.lon));    /* and the map is in navigation mode. the balloon is */
759      /* pretty useless there */
760      if(context->press_on) {
761    
762        coord_t coo;
763        coo = osm_gps_map_get_co_ordinates(map, event->x, event->y);
764    
765        pos_t pos =
766          coord2pos(osm_gps_map_get_co_ordinates(map, event->x, event->y));
767    
768        cache_t *nearest = map_closest(context, &pos);
769        if(nearest && nearest == context->press_on) {
770          pos_t cpos = gpx_cache_pos(nearest);
771    
772          float dist = gpx_pos_get_distance(pos, cpos, FALSE);
773          if(dist2pixel(context, dist, cpos.lat) < CLICK_FUZZ) {
774    
775            context->balloon = nearest;
776            osm_gps_map_osd_draw_balloon(map, cpos.lat, cpos.lon,
777                                         balloon_cb, context);
778          }
779        }
780        context->press_on = NULL;
781      } else {
782        /* save new map position */
783        gfloat lat, lon;
784        g_object_get(map, "latitude", &lat, "longitude", &lon, NULL);
785        context->appdata->map.pos.lat = lat;
786        context->appdata->map.pos.lon = lon;
787      }
788    
789    return FALSE;    return FALSE;
790  }  }
791    
792  static GtkWidget  static void on_window_destroy(GtkWidget *widget, map_context_t *context) {
793  *map_add_button(const gchar *icon, GCallback cb, gpointer data,    appdata_t *appdata = context->appdata;
794                  char *tooltip) {  
795    GtkWidget *button = gtk_button_new();    /* save map parameters */
796    gtk_button_set_image(GTK_BUTTON(button),    OsmGpsMap *map = OSM_GPS_MAP(context->widget);
797                         gtk_image_new_from_stock(icon, GTK_ICON_SIZE_MENU));    gint zoom;
798    g_signal_connect(button, "clicked", cb, data);    g_object_get(map, "zoom", &zoom, NULL);
799  #ifndef USE_MAEMO    context->appdata->map.zoom = zoom;
800    gtk_widget_set_tooltip_text(button, tooltip);  
801      gfloat lat, lon;
802      g_object_get(map, "latitude", &lat, "longitude", &lon, NULL);
803      context->appdata->map.pos.lat = lat;
804      context->appdata->map.pos.lon = lon;
805    
806      gint source;
807      g_object_get(map, "map-source", &source, NULL);
808      context->appdata->map.source = source;
809    
810    #if MAEMO_VERSION_MAJOR == 5
811      /* restore cur_view */
812      context->appdata->cur_view = context->old_view;
813  #endif  #endif
814    return button;  
815      gtk_timeout_remove(context->handler_id);
816      gps_unregister_callback(appdata, context->cb_id);
817    
818      if(context->caches_displayed) {
819        g_free(context->caches_displayed);
820        context->caches_displayed = NULL;
821      }
822    
823      g_free(context);
824      appdata->map.context = NULL;
825  }  }
826    
827  static gboolean map_gps_update(gpointer data) {  #if (MAEMO_VERSION_MAJOR == 5) && !defined(__i386__)
828    /* get access to zoom buttons */
829    static void
830    on_window_realize(GtkWidget *widget, gpointer data) {
831      if (widget->window) {
832        unsigned char value = 1;
833        Atom hildon_zoom_key_atom =
834          gdk_x11_get_xatom_by_name("_HILDON_ZOOM_KEY_ATOM"),
835          integer_atom = gdk_x11_get_xatom_by_name("INTEGER");
836        Display *dpy =
837          GDK_DISPLAY_XDISPLAY(gdk_drawable_get_display(widget->window));
838        Window w = GDK_WINDOW_XID(widget->window);
839    
840        XChangeProperty(dpy, w, hildon_zoom_key_atom,
841                        integer_atom, 8, PropModeReplace, &value, 1);
842      }
843    }
844    #endif
845    
846    /* on maemo a window is either on top or completely invisible. this */
847    /* means that we only need to update the map window if its raised.  */
848    /* on ordinary desktops this is different and we always update */
849    
850    static gboolean on_focus_in(GtkWidget *widget, GdkEventFocus *event,
851                             gpointer data) {
852    map_context_t *context = (map_context_t*)data;    map_context_t *context = (map_context_t*)data;
853    
854    //  gtk_widget_set_sensitive(context->map.gps, gps_fix);    printf("map got focus\n");
855    
856    return TRUE;  #ifdef USE_MAEMO
857      /* re-enable refresh of map */
858      if(!context->handler_id)
859        context->handler_id = gtk_timeout_add(1000, map_gps_update, context);
860    #endif
861    
862      map_setup(context);
863      return FALSE;
864    }
865    
866    static gboolean on_focus_out(GtkWidget *widget, GdkEventFocus *event,
867                             gpointer data) {
868      map_context_t *context = (map_context_t*)data;
869    
870      printf("map lost focus\n");
871    
872      /* save new map position */
873      gfloat lat, lon;
874      g_object_get(widget, "latitude", &lat, "longitude", &lon, NULL);
875    
876      context->appdata->map.pos.lat = lat;
877      context->appdata->map.pos.lon = lon;
878    
879    #ifdef USE_MAEMO
880      gtk_timeout_remove(context->handler_id);
881      context->handler_id = 0;
882    #endif
883    
884      return FALSE;
885    }
886    
887    void map_update(appdata_t *appdata) {
888      printf("map_update\n");
889    #ifndef USE_MAEMO
890      if(appdata->map.context)
891        map_setup(appdata->map.context);
892    #endif
893  }  }
894    
895    /* callback called by the gps layer whenever gps state changes */
896    static void
897    gps_callback(struct gps_state *state, gpointer data) {
898      printf("map: gps callback\n");
899    }
900    
901  void map(appdata_t *appdata) {  void map(appdata_t *appdata) {
902    map_context_t context;    map_context_t *context = NULL;
903    
904    GtkWidget *dialog = gtk_dialog_new_with_buttons(_("Map"),    /* if the map window already exists, just raise it */
905                            GTK_WINDOW(appdata->window),    if(appdata->map.context) {
906                            GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT,      printf("using existing map!\n");
907                            GTK_STOCK_CLOSE, GTK_RESPONSE_CLOSE,      gtk_window_present(GTK_WINDOW(appdata->map.context->window));
908                            NULL);      map_setup(appdata->map.context);
909        return;
910      }
911    
912  #ifndef USE_MAEMO    context = appdata->map.context = g_new0(map_context_t, 1);
913    gtk_window_set_default_size(GTK_WINDOW(dialog), 400, 350);    context->appdata = appdata;
914      context->map_complete = FALSE;
915      context->state = MAP_NONE;
916    
917      /* cleanup old (pre 0.8.7) path if it exists */
918      char *old_path = g_strdup_printf("%s/map/", appdata->image_path);
919      if(g_file_test(old_path, G_FILE_TEST_IS_DIR)) {
920        printf("old file path %s exists\n", old_path);
921        rmdir_recursive(old_path);
922      }
923    
924      /* It is recommanded that all applications share these same */
925      /* map path, so data is only cached once. The path should be: */
926      /* ~/.osm-gps-map on standard PC     (users home) */
927      /* /home/user/.osm-gps-map on Maemo5 (ext3 on internal card) */
928      /* /media/mmc2/osm-gps-map on Maemo4 (vfat on internal card) */
929    #if !defined(USE_MAEMO)
930      char *p = getenv("HOME");
931      if(!p) p = "/tmp";
932      char *path = g_strdup_printf("%s/.osm-gps-map", p);
933  #else  #else
934    gtk_window_set_default_size(GTK_WINDOW(dialog), 800, 480);  #if MAEMO_VERSION_MAJOR == 5
935      char *path = g_strdup("/home/user/.osm-gps-map");
936    #else
937      char *path = g_strdup("/media/mmc2/osm-gps-map");
938    #endif
939  #endif  #endif
940    
941    GtkWidget *hbox = gtk_hbox_new(FALSE, 0);    const char *proxy = get_proxy_uri(appdata);
942    
943    char *path = g_strdup_printf("%s/map/", appdata->image_path);    gint source = context->appdata->map.source;
944      if(!source) source = MAP_SOURCE;
945    
946    context.widget = g_object_new(OSM_TYPE_GPS_MAP,    context->widget = g_object_new(OSM_TYPE_GPS_MAP,
947                  "repo-uri", MAP_SOURCE_OPENSTREETMAP,                   "map-source",               source,
948                  "proxy-uri", get_proxy_uri(),                   "tile-cache",               path,
949                  "tile-cache", path,                   "auto-center",              FALSE,
950                     "record-trip-history",      FALSE,
951                     "show-trip-history",        FALSE,
952                     proxy?"proxy-uri":NULL,     proxy,
953                   NULL);                   NULL);
954    
955    g_free(path);    g_free(path);
956    
957  #if 0    osm_gps_map_osd_classic_init(OSM_GPS_MAP(context->widget));
958    g_signal_connect(G_OBJECT(context.widget), "button-release-event",  
959                     G_CALLBACK(on_map_button_release_event), &context);  #ifdef USE_MAEMO
960      /* we don't use a stackable window here on fremantle, since */
961      /* this leaves the main window independent from the map and */
962      /* the user can e.g. still navigate the main menu */
963      context->window = hildon_window_new();
964    
965    #if (MAEMO_VERSION_MAJOR == 5) && !defined(__i386__)
966      g_signal_connect(G_OBJECT(context->window), "realize",
967                       G_CALLBACK(on_window_realize), NULL);
968    #endif // MAEMO_VERSION
969    #else
970      context->window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
971  #endif  #endif
972    
973    gtk_box_pack_start_defaults(GTK_BOX(hbox), context.widget);  #ifndef USE_MAEMO
974    /* zoom button box */    gtk_window_set_default_size(GTK_WINDOW(context->window), 640, 480);
975    GtkWidget *vbox = gtk_vbox_new(FALSE,0);  #endif
   
   context.zoomin =  
     map_add_button(GTK_STOCK_ZOOM_IN, G_CALLBACK(cb_map_zoomin),  
                    &context, _("Zoom in"));  
   gtk_box_pack_start(GTK_BOX(vbox), context.zoomin, FALSE, FALSE, 0);  
   
   context.zoomout =  
     map_add_button(GTK_STOCK_ZOOM_OUT, G_CALLBACK(cb_map_zoomout),  
                    &context, _("Zoom out"));  
   gtk_box_pack_start(GTK_BOX(vbox), context.zoomout, FALSE, FALSE, 0);  
   
   context.gps =  
     map_add_button(GTK_STOCK_HOME, G_CALLBACK(cb_map_gps),  
                    &context, _("Jump to GPS position"));  
   gtk_widget_set_sensitive(context.gps, FALSE);  
   /* install handler for timed updates of the gps button */  
   context.handler_id = gtk_timeout_add(1000, map_gps_update, &context);  
   gtk_box_pack_start(GTK_BOX(vbox), context.gps, FALSE, FALSE, 0);  
976    
977    gtk_box_pack_start(GTK_BOX(hbox), vbox, FALSE, FALSE, 0);    g_signal_connect(G_OBJECT(context->widget), "focus-in-event",
978                       G_CALLBACK(on_focus_in), context);
979    
980    gtk_box_pack_start_defaults(GTK_BOX(GTK_DIALOG(dialog)->vbox), hbox);    g_signal_connect(G_OBJECT(context->widget), "focus-out-event",
981                       G_CALLBACK(on_focus_out), context);
982    
983    gtk_dialog_set_default_response(GTK_DIALOG(dialog), GTK_RESPONSE_CLOSE);    g_signal_connect(G_OBJECT(context->widget), "configure-event",
984                       G_CALLBACK(on_map_configure), context);
985    
986    gtk_widget_show_all(dialog);    g_signal_connect(G_OBJECT(context->widget), "button-press-event",
987                       G_CALLBACK(on_map_button_press_event), context);
988    
989    gtk_dialog_run(GTK_DIALOG(dialog));    g_signal_connect(G_OBJECT(context->widget), "button-release-event",
990                       G_CALLBACK(on_map_button_release_event), context);
991    gtk_widget_destroy(dialog);  
992      /* install handler for timed updates of the gps button */
993      context->handler_id = gtk_timeout_add(1000, map_gps_update, context);
994      context->cb_id = gps_register_callback(appdata, gps_callback, context);
995    
996    #if MAEMO_VERSION_MAJOR == 5
997      /* prevent some of the main screen things */
998      context->old_view = appdata->cur_view;
999      appdata->cur_view = NULL;
1000    #endif
1001    
1002      g_signal_connect(G_OBJECT(context->window), "destroy",
1003                       G_CALLBACK(on_window_destroy), context);
1004    
1005      gtk_container_add(GTK_CONTAINER(context->window), context->widget);
1006      gtk_widget_show_all(GTK_WIDGET(context->window));
1007  }  }
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