Diff of /trunk/src/osm-gps-map-osd-classic.c

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revision 131 by harbaum, Wed Sep 30 19:14:56 2009 UTC revision 136 by harbaum, Mon Oct 19 13:02:41 2009 UTC
# Line 82  typedef struct { Line 82  typedef struct {
82          cairo_surface_t *surface;          cairo_surface_t *surface;
83          float lat, lon;          float lat, lon;
84          char *name;          char *name;
85            gboolean imperial;    // display distance imperial/metric
86      } nav;      } nav;
87  #endif  #endif
88    
# Line 265  osd_render_balloon(osm_gps_map_osd_t *os Line 266  osd_render_balloon(osm_gps_map_osd_t *os
266      cairo_stroke (cr);      cairo_stroke (cr);
267    
268      if (priv->balloon.cb) {      if (priv->balloon.cb) {
269            osm_gps_map_balloon_event_t event;
270    
271          /* clip in case application tries to draw in */          /* clip in case application tries to draw in */
272              /* exceed of the balloon */              /* exceed of the balloon */
273          cairo_rectangle (cr, priv->balloon.rect.x, priv->balloon.rect.y,          cairo_rectangle (cr, priv->balloon.rect.x, priv->balloon.rect.y,
274                           priv->balloon.rect.w, priv->balloon.rect.h);                           priv->balloon.rect.w, priv->balloon.rect.h);
275          cairo_clip (cr);          cairo_clip (cr);
276          cairo_new_path (cr);  /* current path is not          cairo_new_path (cr);  /* current path is not consumed by cairo_clip */
277                                   consumed by cairo_clip() */  
278            /* request the application to draw the balloon contents */
279            event.type = OSM_GPS_MAP_BALLOON_EVENT_TYPE_DRAW;
280            event.data.draw.rect = &priv->balloon.rect;
281            event.data.draw.cr = cr;
282    
283          priv->balloon.cb(cr, &priv->balloon.rect, priv->balloon.data);          priv->balloon.cb(&event, priv->balloon.data);
284      }      }
285    
286      cairo_destroy(cr);      cairo_destroy(cr);
# Line 282  osd_render_balloon(osm_gps_map_osd_t *os Line 289  osd_render_balloon(osm_gps_map_osd_t *os
289  /* return true if balloon is being displayed and if */  /* return true if balloon is being displayed and if */
290  /* the given coordinate is within this balloon */  /* the given coordinate is within this balloon */
291  static gboolean  static gboolean
292  osd_balloon_check(osm_gps_map_osd_t *osd, gboolean down, gint x, gint y)  osd_balloon_check(osm_gps_map_osd_t *osd, gboolean click, gboolean down, gint x, gint y)
293  {  {
294      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
295    
# Line 301  osd_balloon_check(osm_gps_map_osd_t *osd Line 308  osd_balloon_check(osm_gps_map_osd_t *osd
308          (x > xs) && (x < xs + priv->balloon.rect.w) &&          (x > xs) && (x < xs + priv->balloon.rect.w) &&
309          (y > ys) && (y < ys + priv->balloon.rect.h);          (y > ys) && (y < ys + priv->balloon.rect.h);
310    
311      /* handle the fact that the balloon may have been created by the */      /* is this a real click or is the application just checking for something? */
312      /* button down event */      if(click) {
313      if(!is_in && !down && !priv->balloon.just_created) {  
314          /* the user actually clicked outside the balloon */          /* handle the fact that the balloon may have been created by the */
315            /* button down event */
316            if(!is_in && !down && !priv->balloon.just_created) {
317                /* the user actually clicked outside the balloon */
318    
319                /* close the balloon! */
320                osm_gps_map_osd_clear_balloon (OSM_GPS_MAP(osd->widget));
321    
322                /* and inform application about this */
323                if(priv->balloon.cb) {
324                    osm_gps_map_balloon_event_t event;
325                    event.type = OSM_GPS_MAP_BALLOON_EVENT_TYPE_REMOVED;
326                    priv->balloon.cb(&event, priv->balloon.data);
327                }
328    
329          /* close the balloon! */          }
330          osm_gps_map_osd_clear_balloon (OSM_GPS_MAP(osd->widget));  
331            if(is_in && priv->balloon.cb) {
332                osm_gps_map_balloon_event_t event;
333    
334                /* notify application of click */
335                event.type = OSM_GPS_MAP_BALLOON_EVENT_TYPE_CLICK;
336                event.data.click.x = x - xs;
337                event.data.click.y = y - ys;
338                event.data.click.down = down;
339    
340                priv->balloon.cb(&event, priv->balloon.data);
341            }
342      }      }
343    
344      return is_in;      return is_in;
# Line 944  osd_source_check(osm_gps_map_osd_t *osd, Line 975  osd_source_check(osm_gps_map_osd_t *osd,
975  #endif // OSD_SOURCE_SEL  #endif // OSD_SOURCE_SEL
976    
977  static osd_button_t  static osd_button_t
978  osd_check(osm_gps_map_osd_t *osd, gboolean down, gint x, gint y) {  osd_check_int(osm_gps_map_osd_t *osd, gboolean click, gboolean down, gint x, gint y) {
979      osd_button_t but = OSD_NONE;      osd_button_t but = OSD_NONE;
980    
981  #ifdef OSD_BALLOON  #ifdef OSD_BALLOON
# Line 985  osd_check(osm_gps_map_osd_t *osd, gboole Line 1016  osd_check(osm_gps_map_osd_t *osd, gboole
1016  #ifdef OSD_BALLOON  #ifdef OSD_BALLOON
1017      if(but == OSD_NONE) {      if(but == OSD_NONE) {
1018          /* check if user clicked into balloon */          /* check if user clicked into balloon */
1019          if(osd_balloon_check(osd, down, x, y))          if(osd_balloon_check(osd, click, down, x, y))
1020              but = OSD_BG;              but = OSD_BG;
1021      }      }
1022  #endif  #endif
# Line 1209  osd_render_coordinates(osm_gps_map_osd_t Line 1240  osd_render_coordinates(osm_gps_map_osd_t
1240    
1241  #ifdef OSD_NAV  #ifdef OSD_NAV
1242  #define OSD_NAV_W  (8*OSD_COORDINATES_FONT_SIZE+2*OSD_COORDINATES_OFFSET)  #define OSD_NAV_W  (8*OSD_COORDINATES_FONT_SIZE+2*OSD_COORDINATES_OFFSET)
1243  #define OSD_NAV_H  (150)  #define OSD_NAV_H  (11*OSD_COORDINATES_FONT_SIZE)
1244    
1245    /* http://mathforum.org/library/drmath/view/55417.html */
1246    static float get_bearing(float lat1, float lon1, float lat2, float lon2) {
1247      return atan2( sin(lon2 - lon1) * cos(lat2),
1248                    cos(lat1) * sin(lat2) -
1249                    sin(lat1) * cos(lat2) * cos(lon2 - lon1));
1250    }
1251    
1252    /* http://mathforum.org/library/drmath/view/51722.html */
1253    static float get_distance(float lat1, float lon1, float lat2, float lon2) {
1254      float aob = acos(cos(lat1) * cos(lat2) * cos(lon2 - lon1) +
1255                       sin(lat1) * sin(lat2));
1256    
1257      //  return(aob * 3959.0);   /* great circle radius in miles */
1258    
1259      return(aob * 6371000.0);     /* great circle radius in meters */
1260    }
1261    
1262  static void  static void
1263  osd_render_nav(osm_gps_map_osd_t *osd)  osd_render_nav(osm_gps_map_osd_t *osd)
# Line 1222  osd_render_nav(osm_gps_map_osd_t *osd) Line 1270  osd_render_nav(osm_gps_map_osd_t *osd)
1270      /* first fill with transparency */      /* first fill with transparency */
1271      cairo_t *cr = cairo_create(priv->nav.surface);      cairo_t *cr = cairo_create(priv->nav.surface);
1272      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1273      cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.2);      cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0);
1274      cairo_paint(cr);      cairo_paint(cr);
1275      cairo_set_operator(cr, CAIRO_OPERATOR_OVER);      cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1276    
# Line 1264  osd_render_nav(osm_gps_map_osd_t *osd) Line 1312  osd_render_nav(osm_gps_map_osd_t *osd)
1312  #define ARROW_WIDTH     0.3  #define ARROW_WIDTH     0.3
1313  #define ARROW_LENGTH    0.7  #define ARROW_LENGTH    0.7
1314    
1315      float arot = deg2rad(45);      coord_t *gps = osm_gps_map_get_gps (OSM_GPS_MAP(osd->widget));
1316        if(gps) {
1317      cairo_move_to(cr,          float arot = get_bearing(gps->rlat, gps->rlon,
1318                    x + radius *  ARROW_LENGTH *  sin(arot),                       deg2rad(priv->nav.lat), deg2rad(priv->nav.lon));
1319                    y + radius *  ARROW_LENGTH * -cos(arot));  
1320            cairo_move_to(cr,
1321      cairo_line_to(cr,                        x + radius *  ARROW_LENGTH *  sin(arot),
1322                    x + radius * -ARROW_LENGTH *  sin(arot+ARROW_WIDTH),                        y + radius *  ARROW_LENGTH * -cos(arot));
1323                    y + radius * -ARROW_LENGTH * -cos(arot+ARROW_WIDTH));  
1324            cairo_line_to(cr,
1325      cairo_line_to(cr,                        x + radius * -ARROW_LENGTH *  sin(arot+ARROW_WIDTH),
1326                    x + radius * -0.5 * ARROW_LENGTH *  sin(arot),                        y + radius * -ARROW_LENGTH * -cos(arot+ARROW_WIDTH));
1327                    y + radius * -0.5 * ARROW_LENGTH * -cos(arot));  
1328            cairo_line_to(cr,
1329      cairo_line_to(cr,                        x + radius * -0.5 * ARROW_LENGTH *  sin(arot),
1330                    x + radius * -ARROW_LENGTH *  sin(arot-ARROW_WIDTH),                        y + radius * -0.5 * ARROW_LENGTH * -cos(arot));
1331                    y + radius * -ARROW_LENGTH * -cos(arot-ARROW_WIDTH));  
1332            cairo_line_to(cr,
1333      cairo_close_path(cr);                        x + radius * -ARROW_LENGTH *  sin(arot-ARROW_WIDTH),
1334      cairo_set_source_rgb (cr, 0, 0, 0);                        y + radius * -ARROW_LENGTH * -cos(arot-ARROW_WIDTH));
1335      cairo_fill (cr);  
1336            cairo_close_path(cr);
1337            cairo_set_source_rgb (cr, 0, 0, 0);
1338            cairo_fill (cr);
1339    
1340            y += radius + OSD_COORDINATES_FONT_SIZE/4;
1341    
1342            float dist = get_distance(gps->rlat, gps->rlon,
1343                            deg2rad(priv->nav.lat), deg2rad(priv->nav.lon));
1344    
1345            char *dist_str = NULL;
1346            if(!priv->nav.imperial) {
1347                /* metric is easy ... */
1348                if(dist<1000)
1349                    dist_str = g_strdup_printf("%u m", (int)dist);
1350                else
1351                    dist_str = g_strdup_printf("%.1f km", dist/1000);
1352            } else {
1353                /* and now the hard part: scale for useful imperial values :-( */
1354                /* try to convert to feet, 1ft == 0.3048 m */
1355    
1356      y += radius + OSD_COORDINATES_FONT_SIZE/4;              if(dist/(3*0.3048) >= 1760.0)      /* more than 1760 yard? */
1357      y = osd_render_centered_text(cr, y, OSD_NAV_W, "xx,xx km");                  dist_str = g_strdup_printf("%.1f mi", dist/(0.3048*3*1760.0));
1358                else if(dist/0.3048 >= 100)        /* more than 100 feet? */
1359                    dist_str = g_strdup_printf("%.1f yd", dist/(0.3048*3));
1360                else
1361                    dist_str = g_strdup_printf("%.0f ft", dist/0.3048);
1362            }
1363    
1364            y = osd_render_centered_text(cr, y, OSD_NAV_W, dist_str);
1365            g_free(dist_str);
1366        }
1367    
1368      cairo_destroy(cr);      cairo_destroy(cr);
1369  }  }
# Line 1312  void osm_gps_map_osd_clear_nav (OsmGpsMa Line 1388  void osm_gps_map_osd_clear_nav (OsmGpsMa
1388  }  }
1389    
1390  void  void
1391  osm_gps_map_osd_draw_nav (OsmGpsMap *map, float latitude, float longitude,  osm_gps_map_osd_draw_nav (OsmGpsMap *map, gboolean imperial,
1392                            char *name) {                            float latitude, float longitude, char *name) {
1393      g_return_if_fail (OSM_IS_GPS_MAP (map));      g_return_if_fail (OSM_IS_GPS_MAP (map));
1394    
1395      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
# Line 1332  osm_gps_map_osd_draw_nav (OsmGpsMap *map Line 1408  osm_gps_map_osd_draw_nav (OsmGpsMap *map
1408      priv->nav.lat = latitude;      priv->nav.lat = latitude;
1409      priv->nav.lon = longitude;      priv->nav.lon = longitude;
1410      priv->nav.name = g_strdup(name);      priv->nav.name = g_strdup(name);
1411        priv->nav.imperial = imperial;
1412    
1413      osd_render_nav(osd);      osd_render_nav(osd);
1414    
# Line 1882  osd_busy(osm_gps_map_osd_t *osd) Line 1959  osd_busy(osm_gps_map_osd_t *osd)
1959  #endif  #endif
1960  }  }
1961    
1962    static osd_button_t
1963    osd_check(osm_gps_map_osd_t *osd, gboolean down, gint x, gint y) {
1964        return osd_check_int(osd, TRUE, down, x, y);
1965    }
1966    
1967  static osm_gps_map_osd_t osd_classic = {  static osm_gps_map_osd_t osd_classic = {
1968      .widget     = NULL,      .widget     = NULL,
1969    
# Line 1937  osm_gps_map_osd_check(OsmGpsMap *map, gi Line 2019  osm_gps_map_osd_check(OsmGpsMap *map, gi
2019      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
2020      g_return_val_if_fail (osd, OSD_NONE);      g_return_val_if_fail (osd, OSD_NONE);
2021    
2022      return osd_check(osd, TRUE, x, y);      return osd_check_int(osd, FALSE, TRUE, x, y);
2023  }  }
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