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

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revision 121 by harbaum, Sun Sep 20 19:26:29 2009 UTC revision 143 by harbaum, Mon Oct 26 19:55:00 2009 UTC
# Line 19  Line 19 
19    
20  #include "config.h"  #include "config.h"
21  #include <stdlib.h>  // abs  #include <stdlib.h>  // abs
22    #include <string.h>
23  #include <math.h>    // M_PI/cos()  #include <math.h>    // M_PI/cos()
24    
25  /* parameters that can be overwritten from the config file: */  /* parameters that can be overwritten from the config file: */
# Line 76  typedef struct { Line 77  typedef struct {
77      } crosshair;      } crosshair;
78  #endif  #endif
79    
80    #ifdef OSD_NAV
81        struct {
82            cairo_surface_t *surface;
83            float lat, lon;
84            char *name;
85            gboolean imperial;    // display distance imperial/metric
86        } nav;
87    #endif
88    
89  #ifdef OSD_COORDINATES  #ifdef OSD_COORDINATES
90      struct {      struct {
91          cairo_surface_t *surface;          cairo_surface_t *surface;
# Line 125  typedef struct { Line 135  typedef struct {
135    
136  #define CLOSE_BUTTON_RADIUS   (BALLOON_CORNER_RADIUS)  #define CLOSE_BUTTON_RADIUS   (BALLOON_CORNER_RADIUS)
137    
138    #define FIN   printf("entering function %s\n", __func__);
139    #define FOUT  printf("leaving function %s\n", __func__);
140    
141  /* draw the bubble shape. this is used twice, once for the shape and once */  /* draw the bubble shape. this is used twice, once for the shape and once */
142  /* for the shadow */  /* for the shadow */
# Line 132  static void Line 144  static void
144  osm_gps_map_draw_balloon_shape (cairo_t *cr, int x0, int y0, int x1, int y1,  osm_gps_map_draw_balloon_shape (cairo_t *cr, int x0, int y0, int x1, int y1,
145         gboolean bottom, int px, int py, int px0, int px1) {         gboolean bottom, int px, int py, int px0, int px1) {
146    
147        FIN;
148    
149      cairo_move_to (cr, x0, y0 + BALLOON_CORNER_RADIUS);      cairo_move_to (cr, x0, y0 + BALLOON_CORNER_RADIUS);
150      cairo_arc (cr, x0 + BALLOON_CORNER_RADIUS, y0 + BALLOON_CORNER_RADIUS,      cairo_arc (cr, x0 + BALLOON_CORNER_RADIUS, y0 + BALLOON_CORNER_RADIUS,
151                 BALLOON_CORNER_RADIUS, -M_PI, -M_PI/2);                 BALLOON_CORNER_RADIUS, -M_PI, -M_PI/2);
# Line 160  osm_gps_map_draw_balloon_shape (cairo_t Line 174  osm_gps_map_draw_balloon_shape (cairo_t
174                 BALLOON_CORNER_RADIUS, M_PI/2, M_PI);                 BALLOON_CORNER_RADIUS, M_PI/2, M_PI);
175    
176      cairo_close_path (cr);      cairo_close_path (cr);
177    
178        FOUT;
179  }  }
180    
181  static void  static void
182  osd_render_balloon(osm_gps_map_osd_t *osd) {  osd_render_balloon(osm_gps_map_osd_t *osd) {
183        FIN;
184    
185      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
186    
187      /* get zoom */      /* get zoom */
# Line 256  osd_render_balloon(osm_gps_map_osd_t *os Line 274  osd_render_balloon(osm_gps_map_osd_t *os
274      cairo_stroke (cr);      cairo_stroke (cr);
275    
276      if (priv->balloon.cb) {      if (priv->balloon.cb) {
277            osm_gps_map_balloon_event_t event;
278    
279          /* clip in case application tries to draw in */          /* clip in case application tries to draw in */
280              /* exceed of the balloon */              /* exceed of the balloon */
281          cairo_rectangle (cr, priv->balloon.rect.x, priv->balloon.rect.y,          cairo_rectangle (cr, priv->balloon.rect.x, priv->balloon.rect.y,
282                           priv->balloon.rect.w, priv->balloon.rect.h);                           priv->balloon.rect.w, priv->balloon.rect.h);
283          cairo_clip (cr);          cairo_clip (cr);
284          cairo_new_path (cr);  /* current path is not          cairo_new_path (cr);  /* current path is not consumed by cairo_clip */
285                                   consumed by cairo_clip() */  
286            /* request the application to draw the balloon contents */
287            event.type = OSM_GPS_MAP_BALLOON_EVENT_TYPE_DRAW;
288            event.data.draw.rect = &priv->balloon.rect;
289            event.data.draw.cr = cr;
290    
291          priv->balloon.cb(cr, &priv->balloon.rect, priv->balloon.data);          priv->balloon.cb(&event, priv->balloon.data);
292      }      }
293    
294      cairo_destroy(cr);      cairo_destroy(cr);
295    
296        FOUT;
297  }  }
298    
299  /* return true if balloon is being displayed and if */  /* return true if balloon is being displayed and if */
300  /* the given coordinate is within this balloon */  /* the given coordinate is within this balloon */
301  static gboolean  static gboolean
302  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)
303  {  {
304        FIN;
305    
306      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
307    
308      if(!priv->balloon.surface)      if(!priv->balloon.surface)
# Line 292  osd_balloon_check(osm_gps_map_osd_t *osd Line 320  osd_balloon_check(osm_gps_map_osd_t *osd
320          (x > xs) && (x < xs + priv->balloon.rect.w) &&          (x > xs) && (x < xs + priv->balloon.rect.w) &&
321          (y > ys) && (y < ys + priv->balloon.rect.h);          (y > ys) && (y < ys + priv->balloon.rect.h);
322    
323      /* 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? */
324      /* button down event */      if(click) {
     if(!is_in && !down && !priv->balloon.just_created) {  
         /* the user actually clicked outside the balloon */  
325    
326          /* close the balloon! */          /* handle the fact that the balloon may have been created by the */
327          osm_gps_map_osd_clear_balloon (OSM_GPS_MAP(osd->widget));          /* button down event */
328      }          if(!is_in && !down && !priv->balloon.just_created) {
329                /* the user actually clicked outside the balloon */
330    
331                /* close the balloon! */
332                osm_gps_map_osd_clear_balloon (OSM_GPS_MAP(osd->widget));
333    
334                /* and inform application about this */
335                if(priv->balloon.cb) {
336                    osm_gps_map_balloon_event_t event;
337                    event.type = OSM_GPS_MAP_BALLOON_EVENT_TYPE_REMOVED;
338                    priv->balloon.cb(&event, priv->balloon.data);
339                }
340    
341            }
342    
343            if(is_in && priv->balloon.cb) {
344                osm_gps_map_balloon_event_t event;
345    
346                /* notify application of click */
347                event.type = OSM_GPS_MAP_BALLOON_EVENT_TYPE_CLICK;
348                event.data.click.x = x - xs;
349                event.data.click.y = y - ys;
350                event.data.click.down = down;
351    
352                priv->balloon.cb(&event, priv->balloon.data);
353            }
354        }
355        FOUT;
356      return is_in;      return is_in;
357  }  }
358    
359  void osm_gps_map_osd_clear_balloon (OsmGpsMap *map) {  void osm_gps_map_osd_clear_balloon (OsmGpsMap *map) {
360        FIN;
361    
362      g_return_if_fail (OSM_IS_GPS_MAP (map));      g_return_if_fail (OSM_IS_GPS_MAP (map));
363    
364      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 320  void osm_gps_map_osd_clear_balloon (OsmG Line 374  void osm_gps_map_osd_clear_balloon (OsmG
374          priv->balloon.lon = OSM_GPS_MAP_INVALID;          priv->balloon.lon = OSM_GPS_MAP_INVALID;
375      }      }
376      osm_gps_map_redraw(map);      osm_gps_map_redraw(map);
377        FOUT;
378  }  }
379    
380  void  void
381  osm_gps_map_osd_draw_balloon (OsmGpsMap *map, float latitude, float longitude,  osm_gps_map_osd_draw_balloon (OsmGpsMap *map, float latitude, float longitude,
382                                OsmGpsMapBalloonCallback cb, gpointer data) {                                OsmGpsMapBalloonCallback cb, gpointer data) {
383        FIN;
384      g_return_if_fail (OSM_IS_GPS_MAP (map));      g_return_if_fail (OSM_IS_GPS_MAP (map));
385    
386      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 351  osm_gps_map_osd_draw_balloon (OsmGpsMap Line 407  osm_gps_map_osd_draw_balloon (OsmGpsMap
407      osd_render_balloon(osd);      osd_render_balloon(osd);
408    
409      osm_gps_map_redraw(map);      osm_gps_map_redraw(map);
410        FOUT;
411  }  }
412    
413  #endif // OSD_BALLOON  #endif // OSD_BALLOON
# Line 495  osd_shape(cairo_t *cr) { Line 552  osd_shape(cairo_t *cr) {
552  static gboolean  static gboolean
553  osm_gps_map_in_circle(gint x, gint y, gint cx, gint cy, gint rad)  osm_gps_map_in_circle(gint x, gint y, gint cx, gint cy, gint rad)
554  {  {
555        FIN;
556      return( pow(cx - x, 2) + pow(cy - y, 2) < rad * rad);      return( pow(cx - x, 2) + pow(cy - y, 2) < rad * rad);
557  }  }
558    
# Line 693  osd_source_content(osm_gps_map_osd_t *os Line 751  osd_source_content(osm_gps_map_osd_t *os
751    
752  static void  static void
753  osd_render_source_sel(osm_gps_map_osd_t *osd, gboolean force_rerender) {  osd_render_source_sel(osm_gps_map_osd_t *osd, gboolean force_rerender) {
754        FIN;
755    
756      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
757    
758      if(priv->source_sel.rendered && !force_rerender)      if(priv->source_sel.rendered && !force_rerender)
# Line 739  osd_render_source_sel(osm_gps_map_osd_t Line 799  osd_render_source_sel(osm_gps_map_osd_t
799      cairo_stroke (cr);      cairo_stroke (cr);
800    
801      cairo_destroy(cr);      cairo_destroy(cr);
802        FOUT;
803  }  }
804    
805  /* re-allocate the buffer used to draw the menu. This is used */  /* re-allocate the buffer used to draw the menu. This is used */
806  /* to collapse/expand the buffer */  /* to collapse/expand the buffer */
807  static void  static void
808  osd_source_reallocate(osm_gps_map_osd_t *osd) {  osd_source_reallocate(osm_gps_map_osd_t *osd) {
809        FIN;
810      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
811    
812      /* re-allocate offscreen bitmap */      /* re-allocate offscreen bitmap */
# Line 785  osd_source_reallocate(osm_gps_map_osd_t Line 847  osd_source_reallocate(osm_gps_map_osd_t
847          cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w+2, h+2);          cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w+2, h+2);
848    
849      osd_render_source_sel(osd, TRUE);      osd_render_source_sel(osd, TRUE);
850        FOUT;
851  }  }
852    
853  #define OSD_HZ      15  #define OSD_HZ      15
854  #define OSD_TIME    500  #define OSD_TIME    500
855    
856  static gboolean osd_source_animate(gpointer data) {  static gboolean osd_source_animate(gpointer data) {
857        FIN;
858      osm_gps_map_osd_t *osd = (osm_gps_map_osd_t*)data;      osm_gps_map_osd_t *osd = (osm_gps_map_osd_t*)data;
859      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
860      int diff = OSD_S_EXP_W - OSD_S_W - OSD_S_X;      int diff = OSD_S_EXP_W - OSD_S_W - OSD_S_X;
# Line 829  static gboolean osd_source_animate(gpoin Line 893  static gboolean osd_source_animate(gpoin
893      if(done)      if(done)
894          priv->source_sel.handler_id = 0;          priv->source_sel.handler_id = 0;
895    
896        FOUT;
897      return !done;      return !done;
898  }  }
899    
# Line 836  static gboolean osd_source_animate(gpoin Line 901  static gboolean osd_source_animate(gpoin
901  static void  static void
902  osd_source_toggle(osm_gps_map_osd_t *osd)  osd_source_toggle(osm_gps_map_osd_t *osd)
903  {  {
904        FIN;
905      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
906    
907      /* ignore clicks while animation is running */      /* ignore clicks while animation is running */
# Line 861  osd_source_toggle(osm_gps_map_osd_t *osd Line 927  osd_source_toggle(osm_gps_map_osd_t *osd
927      /* start timer to handle animation */      /* start timer to handle animation */
928      priv->source_sel.handler_id = gtk_timeout_add(OSD_TIME/OSD_HZ,      priv->source_sel.handler_id = gtk_timeout_add(OSD_TIME/OSD_HZ,
929                                                    osd_source_animate, osd);                                                    osd_source_animate, osd);
930        FOUT;
931  }  }
932    
933  /* check if the user clicked inside the source selection area */  /* check if the user clicked inside the source selection area */
934  static osd_button_t  static osd_button_t
935  osd_source_check(osm_gps_map_osd_t *osd, gboolean down, gint x, gint y) {  osd_source_check(osm_gps_map_osd_t *osd, gboolean down, gint x, gint y) {
936        FIN;
937      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
938    
939      if(!priv->source_sel.expanded)      if(!priv->source_sel.expanded)
# Line 923  osd_source_check(osm_gps_map_osd_t *osd, Line 991  osd_source_check(osm_gps_map_osd_t *osd,
991                      osm_gps_map_repaint(OSM_GPS_MAP(osd->widget));                      osm_gps_map_repaint(OSM_GPS_MAP(osd->widget));
992                  }                  }
993              }              }
994    
995              /* return "clicked in OSD background" to prevent further */              /* return "clicked in OSD background" to prevent further */
996              /* processing by application */              /* processing by application */
997              return OSD_BG;              return OSD_BG;
998          }          }
999      }      }
1000    
1001        FOUT;
1002      return OSD_NONE;      return OSD_NONE;
1003  }  }
1004  #endif // OSD_SOURCE_SEL  #endif // OSD_SOURCE_SEL
1005    
1006  static osd_button_t  static osd_button_t
1007  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) {
1008        FIN;
1009      osd_button_t but = OSD_NONE;      osd_button_t but = OSD_NONE;
1010    
1011  #ifdef OSD_BALLOON  #ifdef OSD_BALLOON
# Line 976  osd_check(osm_gps_map_osd_t *osd, gboole Line 1046  osd_check(osm_gps_map_osd_t *osd, gboole
1046  #ifdef OSD_BALLOON  #ifdef OSD_BALLOON
1047      if(but == OSD_NONE) {      if(but == OSD_NONE) {
1048          /* check if user clicked into balloon */          /* check if user clicked into balloon */
1049          if(osd_balloon_check(osd, down, x, y))          if(osd_balloon_check(osd, click, down, x, y))
1050              but = OSD_BG;              but = OSD_BG;
1051      }      }
1052  #endif  #endif
1053    
1054        FOUT;
1055      return but;      return but;
1056  }  }
1057    
# Line 1063  osd_zoom_labels(cairo_t *cr, gint x, gin Line 1134  osd_zoom_labels(cairo_t *cr, gint x, gin
1134  #define OSD_COORDINATES_OFFSET (OSD_COORDINATES_FONT_SIZE/6)  #define OSD_COORDINATES_OFFSET (OSD_COORDINATES_FONT_SIZE/6)
1135    
1136  #define OSD_COORDINATES_W  (8*OSD_COORDINATES_FONT_SIZE+2*OSD_COORDINATES_OFFSET)  #define OSD_COORDINATES_W  (8*OSD_COORDINATES_FONT_SIZE+2*OSD_COORDINATES_OFFSET)
1137  #define OSD_COORDINATES_H  (2*OSD_COORDINATES_FONT_SIZE+OSD_COORDINATES_OFFSET)  #define OSD_COORDINATES_H  (2*OSD_COORDINATES_FONT_SIZE+2*OSD_COORDINATES_OFFSET+OSD_COORDINATES_FONT_SIZE/4)
1138    
1139  /* these can be overwritten with versions that support */  /* these can be overwritten with versions that support */
1140  /* localization */  /* localization */
# Line 1121  static char Line 1192  static char
1192                             c, (int)integral, fractional*60.0);                             c, (int)integral, fractional*60.0);
1193  }  }
1194    
1195    /* render a string at the given screen position */
1196    static int
1197    osd_render_centered_text(cairo_t *cr, int y, int width, char *text) {
1198        FIN;
1199    
1200        printf("params: %p %d %d %p\n", cr, y, width, text); // XXX
1201    
1202        if(!text) return y;
1203    
1204        printf("text given: %s\n", text); // XXX
1205    
1206        char *p = g_malloc(strlen(text)+4);  // space for "...\n"
1207        strcpy(p, text);
1208    
1209        cairo_text_extents_t extents;
1210        cairo_text_extents (cr, p, &extents);
1211    
1212        /* check if text needs to be truncated */
1213        int trunc_at = strlen(text)-1;
1214        while(extents.width > width) {
1215            printf("trunc at %d\n", trunc_at);  // XXX
1216    
1217            trunc_at--;
1218            strcpy(p+trunc_at, "...");
1219            cairo_text_extents (cr, p, &extents);
1220        }
1221    
1222        printf("painting\n"); // XXX
1223    
1224        cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
1225        cairo_set_line_width (cr, OSD_COORDINATES_FONT_SIZE/6);
1226        cairo_move_to (cr, (width - extents.width)/2, y - extents.y_bearing);
1227        cairo_text_path (cr, p);
1228        cairo_stroke (cr);
1229    
1230        cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
1231        cairo_move_to (cr, (width - extents.width)/2, y - extents.y_bearing);
1232        cairo_show_text (cr, p);
1233    
1234        g_free(p);
1235    
1236        /* skip + 1/5 line */
1237        FOUT;
1238        return y + 6*OSD_COORDINATES_FONT_SIZE/5;
1239    }
1240    
1241  static void  static void
1242  osd_render_coordinates(osm_gps_map_osd_t *osd)  osd_render_coordinates(osm_gps_map_osd_t *osd)
1243  {  {
1244        FIN;
1245      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
1246    
1247      /* get current map position */      /* get current map position */
# Line 1156  osd_render_coordinates(osm_gps_map_osd_t Line 1274  osd_render_coordinates(osm_gps_map_osd_t
1274      char *latitude = osd_latitude_str(lat);      char *latitude = osd_latitude_str(lat);
1275      char *longitude = osd_longitude_str(lon);      char *longitude = osd_longitude_str(lon);
1276    
1277      cairo_text_extents_t lat_extents, lon_extents;      int y = OSD_COORDINATES_OFFSET;
1278      cairo_text_extents (cr, latitude, &lat_extents);      y = osd_render_centered_text(cr, y, OSD_COORDINATES_W, latitude);
1279      cairo_text_extents (cr, longitude, &lon_extents);      y = osd_render_centered_text(cr, y, OSD_COORDINATES_W, longitude);
1280    
1281        g_free(latitude);
1282        g_free(longitude);
1283    
1284      cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);      cairo_destroy(cr);
1285      cairo_set_line_width (cr, OSD_COORDINATES_FONT_SIZE/6);      FOUT;
1286      cairo_move_to (cr,  }
1287                     (OSD_COORDINATES_W - lat_extents.width)/2,  #endif  // OSD_COORDINATES
                    OSD_COORDINATES_OFFSET - lat_extents.y_bearing);  
     cairo_text_path (cr, latitude);  
     cairo_move_to (cr,  
                    (OSD_COORDINATES_W - lon_extents.width)/2,  
                    OSD_COORDINATES_OFFSET - lon_extents.y_bearing +  
                    OSD_COORDINATES_FONT_SIZE);  
     cairo_text_path (cr, longitude);  
     cairo_stroke (cr);  
1288    
1289      cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);  #ifdef OSD_NAV
1290      cairo_move_to (cr,  #define OSD_NAV_W  (8*OSD_COORDINATES_FONT_SIZE+2*OSD_COORDINATES_OFFSET)
1291                     (OSD_COORDINATES_W - lat_extents.width)/2,  #define OSD_NAV_H  (11*OSD_COORDINATES_FONT_SIZE)
1292                     OSD_COORDINATES_OFFSET - lat_extents.y_bearing);  
1293      cairo_show_text (cr, latitude);  /* http://mathforum.org/library/drmath/view/55417.html */
1294      cairo_move_to (cr,  static float get_bearing(float lat1, float lon1, float lat2, float lon2) {
1295                     (OSD_COORDINATES_W - lon_extents.width)/2,    return atan2( sin(lon2 - lon1) * cos(lat2),
1296                     OSD_COORDINATES_OFFSET - lon_extents.y_bearing +                  cos(lat1) * sin(lat2) -
1297                     OSD_COORDINATES_FONT_SIZE);                  sin(lat1) * cos(lat2) * cos(lon2 - lon1));
1298      cairo_show_text (cr, longitude);  }
1299    
1300    /* http://mathforum.org/library/drmath/view/51722.html */
1301    static float get_distance(float lat1, float lon1, float lat2, float lon2) {
1302      float aob = acos(cos(lat1) * cos(lat2) * cos(lon2 - lon1) +
1303                       sin(lat1) * sin(lat2));
1304    
1305      //  return(aob * 3959.0);   /* great circle radius in miles */
1306    
1307      return(aob * 6371000.0);     /* great circle radius in meters */
1308    }
1309    
1310    static void
1311    osd_render_nav(osm_gps_map_osd_t *osd)
1312    {
1313        FIN;
1314        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1315    
1316        if(!priv->nav.surface || isnan(priv->nav.lat) || isnan(priv->nav.lon))
1317            return;
1318    
1319        /* first fill with transparency */
1320        cairo_t *cr = cairo_create(priv->nav.surface);
1321        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1322        cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0);
1323        cairo_paint(cr);
1324        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1325    
1326        cairo_select_font_face (cr, "Sans",
1327                                CAIRO_FONT_SLANT_NORMAL,
1328                                CAIRO_FONT_WEIGHT_BOLD);
1329        cairo_set_font_size (cr, OSD_COORDINATES_FONT_SIZE);
1330    
1331        char *latitude = osd_latitude_str(priv->nav.lat);
1332        char *longitude = osd_longitude_str(priv->nav.lon);
1333    
1334        int y = OSD_COORDINATES_OFFSET;
1335        y = osd_render_centered_text(cr, y, OSD_NAV_W, priv->nav.name);
1336        y = osd_render_centered_text(cr, y, OSD_NAV_W, latitude);
1337        y = osd_render_centered_text(cr, y, OSD_NAV_W, longitude);
1338    
1339      g_free(latitude);      g_free(latitude);
1340      g_free(longitude);      g_free(longitude);
1341    
1342        /* draw the compass */
1343        int radius = (OSD_NAV_H - y - 5*OSD_COORDINATES_FONT_SIZE/4)/2;
1344        if(radius > OSD_NAV_W/2)
1345            radius = OSD_NAV_W/2;
1346    
1347        int x = OSD_NAV_W/2+1;
1348        y += radius;
1349    
1350        cairo_stroke (cr);
1351    
1352        /* draw background */
1353        cairo_arc(cr, x, y, radius, 0,  2*M_PI);
1354        cairo_set_source_rgba (cr, 1, 1, 1, 0.5);
1355        cairo_fill_preserve (cr);
1356        cairo_set_source_rgb (cr, 0, 0, 0);
1357        cairo_set_line_width (cr, 1);
1358        cairo_stroke (cr);
1359    
1360        /* draw pointer */
1361    #define ARROW_WIDTH     0.3
1362    #define ARROW_LENGTH    0.7
1363    
1364        coord_t *gps = osm_gps_map_get_gps (OSM_GPS_MAP(osd->widget));
1365        if(gps) {
1366            float arot = get_bearing(gps->rlat, gps->rlon,
1367                         deg2rad(priv->nav.lat), deg2rad(priv->nav.lon));
1368    
1369            cairo_move_to(cr,
1370                          x + radius *  ARROW_LENGTH *  sin(arot),
1371                          y + radius *  ARROW_LENGTH * -cos(arot));
1372    
1373            cairo_line_to(cr,
1374                          x + radius * -ARROW_LENGTH *  sin(arot+ARROW_WIDTH),
1375                          y + radius * -ARROW_LENGTH * -cos(arot+ARROW_WIDTH));
1376    
1377            cairo_line_to(cr,
1378                          x + radius * -0.5 * ARROW_LENGTH *  sin(arot),
1379                          y + radius * -0.5 * ARROW_LENGTH * -cos(arot));
1380    
1381            cairo_line_to(cr,
1382                          x + radius * -ARROW_LENGTH *  sin(arot-ARROW_WIDTH),
1383                          y + radius * -ARROW_LENGTH * -cos(arot-ARROW_WIDTH));
1384    
1385            cairo_close_path(cr);
1386            cairo_set_source_rgb (cr, 0, 0, 0);
1387            cairo_fill (cr);
1388    
1389            y += radius + OSD_COORDINATES_FONT_SIZE/4;
1390    
1391            float dist = get_distance(gps->rlat, gps->rlon,
1392                            deg2rad(priv->nav.lat), deg2rad(priv->nav.lon));
1393    
1394            char *dist_str = NULL;
1395            if(!priv->nav.imperial) {
1396                /* metric is easy ... */
1397                if(dist<1000)
1398                    dist_str = g_strdup_printf("%u m", (int)dist);
1399                else
1400                    dist_str = g_strdup_printf("%.1f km", dist/1000);
1401            } else {
1402                /* and now the hard part: scale for useful imperial values :-( */
1403                /* try to convert to feet, 1ft == 0.3048 m */
1404    
1405                if(dist/(3*0.3048) >= 1760.0)      /* more than 1760 yard? */
1406                    dist_str = g_strdup_printf("%.1f mi", dist/(0.3048*3*1760.0));
1407                else if(dist/0.3048 >= 100)        /* more than 100 feet? */
1408                    dist_str = g_strdup_printf("%.1f yd", dist/(0.3048*3));
1409                else
1410                    dist_str = g_strdup_printf("%.0f ft", dist/0.3048);
1411            }
1412    
1413            y = osd_render_centered_text(cr, y, OSD_NAV_W, dist_str);
1414            g_free(dist_str);
1415        }
1416    
1417      cairo_destroy(cr);      cairo_destroy(cr);
1418        FOUT;
1419  }  }
1420  #endif  // OSD_COORDINATES  
1421    void osm_gps_map_osd_clear_nav (OsmGpsMap *map) {
1422        FIN;
1423        g_return_if_fail (OSM_IS_GPS_MAP (map));
1424    
1425        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
1426        g_return_if_fail (osd);
1427    
1428        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1429        g_return_if_fail (priv);
1430    
1431        if(priv->nav.surface) {
1432            cairo_surface_destroy(priv->nav.surface);
1433            priv->nav.surface = NULL;
1434            priv->nav.lat = OSM_GPS_MAP_INVALID;
1435            priv->nav.lon = OSM_GPS_MAP_INVALID;
1436            if(priv->nav.name) g_free(priv->nav.name);
1437        }
1438        osm_gps_map_redraw(map);
1439        FOUT;
1440    }
1441    
1442    void
1443    osm_gps_map_osd_draw_nav (OsmGpsMap *map, gboolean imperial,
1444                              float latitude, float longitude, char *name) {
1445        FIN;
1446        g_return_if_fail (OSM_IS_GPS_MAP (map));
1447    
1448        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
1449        g_return_if_fail (osd);
1450    
1451        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1452        g_return_if_fail (priv);
1453    
1454        osm_gps_map_osd_clear_nav (map);
1455    
1456        /* allocate balloon surface */
1457        priv->nav.surface =
1458            cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1459                                       OSD_NAV_W+2, OSD_NAV_H+2);
1460    
1461        priv->nav.lat = latitude;
1462        priv->nav.lon = longitude;
1463        priv->nav.name = g_strdup(name);
1464        priv->nav.imperial = imperial;
1465    
1466        osd_render_nav(osd);
1467    
1468        osm_gps_map_redraw(map);
1469        FOUT;
1470    }
1471    
1472    #endif // OSD_NAV
1473    
1474    
1475  #ifdef OSD_CROSSHAIR  #ifdef OSD_CROSSHAIR
1476    
# Line 1204  osd_render_coordinates(osm_gps_map_osd_t Line 1485  osd_render_coordinates(osm_gps_map_osd_t
1485    
1486  static void  static void
1487  osd_render_crosshair_shape(cairo_t *cr) {  osd_render_crosshair_shape(cairo_t *cr) {
1488        FIN;
1489      cairo_arc (cr, OSD_CROSSHAIR_W/2, OSD_CROSSHAIR_H/2,      cairo_arc (cr, OSD_CROSSHAIR_W/2, OSD_CROSSHAIR_H/2,
1490                 OSD_CROSSHAIR_RADIUS, 0,  2*M_PI);                 OSD_CROSSHAIR_RADIUS, 0,  2*M_PI);
1491    
# Line 1222  osd_render_crosshair_shape(cairo_t *cr) Line 1504  osd_render_crosshair_shape(cairo_t *cr)
1504      cairo_rel_line_to (cr, 0, OSD_CROSSHAIR_TICK);      cairo_rel_line_to (cr, 0, OSD_CROSSHAIR_TICK);
1505    
1506      cairo_stroke (cr);      cairo_stroke (cr);
1507        FOUT;
1508  }  }
1509    
1510  static void  static void
1511  osd_render_crosshair(osm_gps_map_osd_t *osd)  osd_render_crosshair(osm_gps_map_osd_t *osd)
1512  {  {
1513        FIN;
1514      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
1515    
1516      if(priv->crosshair.rendered)      if(priv->crosshair.rendered)
# Line 1252  osd_render_crosshair(osm_gps_map_osd_t * Line 1536  osd_render_crosshair(osm_gps_map_osd_t *
1536      osd_render_crosshair_shape(cr);      osd_render_crosshair_shape(cr);
1537    
1538      cairo_destroy(cr);      cairo_destroy(cr);
1539        FOUT;
1540  }  }
1541  #endif  #endif
1542    
# Line 1273  osd_render_crosshair(osm_gps_map_osd_t * Line 1558  osd_render_crosshair(osm_gps_map_osd_t *
1558  static void  static void
1559  osd_render_scale(osm_gps_map_osd_t *osd)  osd_render_scale(osm_gps_map_osd_t *osd)
1560  {  {
1561        FIN;
1562      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
1563    
1564      /* this only needs to be rendered if the zoom has changed */      /* this only needs to be rendered if the zoom has changed */
# Line 1396  osd_render_scale(osm_gps_map_osd_t *osd) Line 1682  osd_render_scale(osm_gps_map_osd_t *osd)
1682      cairo_stroke(cr);      cairo_stroke(cr);
1683    
1684      cairo_destroy(cr);      cairo_destroy(cr);
1685        FOUT;
1686  }  }
1687  #endif  #endif
1688    
1689  static void  static void
1690  osd_render_controls(osm_gps_map_osd_t *osd)  osd_render_controls(osm_gps_map_osd_t *osd)
1691  {  {
1692        FIN;
1693      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
1694    
1695      if(priv->controls.rendered      if(priv->controls.rendered
# Line 1518  osd_render(osm_gps_map_osd_t *osd) Line 1806  osd_render(osm_gps_map_osd_t *osd)
1806      osd_render_crosshair(osd);      osd_render_crosshair(osd);
1807  #endif  #endif
1808    
1809    #ifdef OSD_NAV
1810        osd_render_nav(osd);
1811    #endif
1812    
1813  #ifdef OSD_COORDINATES  #ifdef OSD_COORDINATES
1814      osd_render_coordinates(osd);      osd_render_coordinates(osd);
1815  #endif  #endif
# Line 1597  osd_draw(osm_gps_map_osd_t *osd, GdkDraw Line 1889  osd_draw(osm_gps_map_osd_t *osd, GdkDraw
1889      cairo_paint(cr);      cairo_paint(cr);
1890  #endif  #endif
1891    
1892    #ifdef OSD_NAV
1893        if(priv->nav.surface) {
1894            x =  OSD_X;
1895            if(x < 0) x += osd->widget->allocation.width - OSD_NAV_W;
1896            y = (osd->widget->allocation.height - OSD_NAV_H)/2;
1897    
1898            cairo_set_source_surface(cr, priv->nav.surface, x, y);
1899            cairo_paint(cr);
1900        }
1901    #endif
1902    
1903  #ifdef OSD_COORDINATES  #ifdef OSD_COORDINATES
1904      x = -OSD_X;      x = -OSD_X;
1905      y = -OSD_Y;      y = -OSD_Y;
# Line 1660  osd_draw(osm_gps_map_osd_t *osd, GdkDraw Line 1963  osd_draw(osm_gps_map_osd_t *osd, GdkDraw
1963  #endif  #endif
1964    
1965      cairo_destroy(cr);      cairo_destroy(cr);
1966        FOUT;
1967  }  }
1968    
1969  static void  static void
1970  osd_free(osm_gps_map_osd_t *osd)  osd_free(osm_gps_map_osd_t *osd)
1971  {  {
1972        FIN;
1973      osd_priv_t *priv = (osd_priv_t *)(osd->priv);      osd_priv_t *priv = (osd_priv_t *)(osd->priv);
1974    
1975      if (priv->controls.surface)      if (priv->controls.surface)
# Line 1688  osd_free(osm_gps_map_osd_t *osd) Line 1993  osd_free(osm_gps_map_osd_t *osd)
1993           cairo_surface_destroy(priv->crosshair.surface);           cairo_surface_destroy(priv->crosshair.surface);
1994  #endif  #endif
1995    
1996    #ifdef OSD_NAV
1997        if (priv->nav.surface)
1998             cairo_surface_destroy(priv->nav.surface);
1999    #endif
2000    
2001  #ifdef OSD_COORDINATES  #ifdef OSD_COORDINATES
2002      if (priv->coordinates.surface)      if (priv->coordinates.surface)
2003           cairo_surface_destroy(priv->coordinates.surface);           cairo_surface_destroy(priv->coordinates.surface);
# Line 1699  osd_free(osm_gps_map_osd_t *osd) Line 2009  osd_free(osm_gps_map_osd_t *osd)
2009  #endif  #endif
2010    
2011      g_free(priv);      g_free(priv);
2012        FOUT;
2013  }  }
2014    
2015  static gboolean  static gboolean
2016  osd_busy(osm_gps_map_osd_t *osd)  osd_busy(osm_gps_map_osd_t *osd)
2017  {  {
2018        FIN;
2019  #ifdef OSD_SOURCE_SEL  #ifdef OSD_SOURCE_SEL
2020      osd_priv_t *priv = (osd_priv_t *)(osd->priv);      osd_priv_t *priv = (osd_priv_t *)(osd->priv);
2021      return (priv->source_sel.handler_id != 0);      return (priv->source_sel.handler_id != 0);
# Line 1712  osd_busy(osm_gps_map_osd_t *osd) Line 2024  osd_busy(osm_gps_map_osd_t *osd)
2024  #endif  #endif
2025  }  }
2026    
2027    static osd_button_t
2028    osd_check(osm_gps_map_osd_t *osd, gboolean down, gint x, gint y) {
2029        FIN;
2030        return osd_check_int(osd, TRUE, down, x, y);
2031    }
2032    
2033  static osm_gps_map_osd_t osd_classic = {  static osm_gps_map_osd_t osd_classic = {
2034      .widget     = NULL,      .widget     = NULL,
2035    
# Line 1731  static osm_gps_map_osd_t osd_classic = { Line 2049  static osm_gps_map_osd_t osd_classic = {
2049  void  void
2050  osm_gps_map_osd_classic_init(OsmGpsMap *map)  osm_gps_map_osd_classic_init(OsmGpsMap *map)
2051  {  {
2052        FIN;
2053      osd_priv_t *priv = osd_classic.priv = g_new0(osd_priv_t, 1);      osd_priv_t *priv = osd_classic.priv = g_new0(osd_priv_t, 1);
2054    
2055  #ifdef OSD_BALLOON  #ifdef OSD_BALLOON
# Line 1741  osm_gps_map_osd_classic_init(OsmGpsMap * Line 2060  osm_gps_map_osd_classic_init(OsmGpsMap *
2060      osd_classic.priv = priv;      osd_classic.priv = priv;
2061    
2062      osm_gps_map_register_osd(map, &osd_classic);      osm_gps_map_register_osd(map, &osd_classic);
2063        FOUT;
2064  }  }
2065    
2066  #ifdef OSD_GPS_BUTTON  #ifdef OSD_GPS_BUTTON
# Line 1748  osm_gps_map_osd_classic_init(OsmGpsMap * Line 2068  osm_gps_map_osd_classic_init(OsmGpsMap *
2068  /* but instead are to be used by the main application */  /* but instead are to be used by the main application */
2069  void osm_gps_map_osd_enable_gps (OsmGpsMap *map, OsmGpsMapOsdCallback cb,  void osm_gps_map_osd_enable_gps (OsmGpsMap *map, OsmGpsMapOsdCallback cb,
2070                                   gpointer data) {                                   gpointer data) {
2071        FIN;
2072      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
2073      g_return_if_fail (osd);      g_return_if_fail (osd);
2074    
# Line 1759  void osm_gps_map_osd_enable_gps (OsmGpsM Line 2080  void osm_gps_map_osd_enable_gps (OsmGpsM
2080      osd->render(osd);      osd->render(osd);
2081    
2082      osm_gps_map_redraw(map);      osm_gps_map_redraw(map);
2083        FOUT;
2084  }  }
2085  #endif  #endif
2086    
2087  osd_button_t  osd_button_t
2088  osm_gps_map_osd_check(OsmGpsMap *map, gint x, gint y) {  osm_gps_map_osd_check(OsmGpsMap *map, gint x, gint y) {
2089        FIN;
2090      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
2091      g_return_val_if_fail (osd, OSD_NONE);      g_return_val_if_fail (osd, OSD_NONE);
2092    
2093      return osd_check(osd, TRUE, x, y);      return osd_check_int(osd, FALSE, TRUE, x, y);
2094  }  }
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Removed from v.121  
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  Added in v.143