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

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revision 124 by harbaum, Thu Sep 24 14:09:53 2009 UTC revision 152 by harbaum, Mon Nov 2 10:53:01 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 134  typedef struct { Line 135  typedef struct {
135    
136  #define CLOSE_BUTTON_RADIUS   (BALLOON_CORNER_RADIUS)  #define CLOSE_BUTTON_RADIUS   (BALLOON_CORNER_RADIUS)
137    
138    #if 0
139    #define FIN   printf("entering function %s\n", __func__);
140    #define FOUT  printf("leaving function %s\n", __func__);
141    #else
142    #define FIN   ;
143    #define FOUT  ;
144    #endif
145    
146  /* 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 */
147  /* for the shadow */  /* for the shadow */
# Line 141  static void Line 149  static void
149  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,
150         gboolean bottom, int px, int py, int px0, int px1) {         gboolean bottom, int px, int py, int px0, int px1) {
151    
152        FIN;
153    
154      cairo_move_to (cr, x0, y0 + BALLOON_CORNER_RADIUS);      cairo_move_to (cr, x0, y0 + BALLOON_CORNER_RADIUS);
155      cairo_arc (cr, x0 + BALLOON_CORNER_RADIUS, y0 + BALLOON_CORNER_RADIUS,      cairo_arc (cr, x0 + BALLOON_CORNER_RADIUS, y0 + BALLOON_CORNER_RADIUS,
156                 BALLOON_CORNER_RADIUS, -M_PI, -M_PI/2);                 BALLOON_CORNER_RADIUS, -M_PI, -M_PI/2);
# Line 169  osm_gps_map_draw_balloon_shape (cairo_t Line 179  osm_gps_map_draw_balloon_shape (cairo_t
179                 BALLOON_CORNER_RADIUS, M_PI/2, M_PI);                 BALLOON_CORNER_RADIUS, M_PI/2, M_PI);
180    
181      cairo_close_path (cr);      cairo_close_path (cr);
182    
183        FOUT;
184  }  }
185    
186  static void  static void
187  osd_render_balloon(osm_gps_map_osd_t *osd) {  osd_render_balloon(osm_gps_map_osd_t *osd) {
188        FIN;
189    
190      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
191    
192        if(!priv->balloon.surface)
193            return;
194    
195      /* get zoom */      /* get zoom */
196      gint zoom;      gint zoom;
197      g_object_get(OSM_GPS_MAP(osd->widget), "zoom", &zoom, NULL);      g_object_get(OSM_GPS_MAP(osd->widget), "zoom", &zoom, NULL);
# Line 235  osd_render_balloon(osm_gps_map_osd_t *os Line 252  osd_render_balloon(osm_gps_map_osd_t *os
252      priv->balloon.rect.w = x1 - x0 - 2*BALLOON_BORDER;      priv->balloon.rect.w = x1 - x0 - 2*BALLOON_BORDER;
253      priv->balloon.rect.h = y1 - y0 - 2*BALLOON_BORDER;      priv->balloon.rect.h = y1 - y0 - 2*BALLOON_BORDER;
254    
255        g_assert(priv->balloon.surface);
256      cairo_t *cr = cairo_create(priv->balloon.surface);      cairo_t *cr = cairo_create(priv->balloon.surface);
257      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
258      cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);      cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
# Line 265  osd_render_balloon(osm_gps_map_osd_t *os Line 283  osd_render_balloon(osm_gps_map_osd_t *os
283      cairo_stroke (cr);      cairo_stroke (cr);
284    
285      if (priv->balloon.cb) {      if (priv->balloon.cb) {
286            osm_gps_map_balloon_event_t event;
287    
288          /* clip in case application tries to draw in */          /* clip in case application tries to draw in */
289              /* exceed of the balloon */              /* exceed of the balloon */
290          cairo_rectangle (cr, priv->balloon.rect.x, priv->balloon.rect.y,          cairo_rectangle (cr, priv->balloon.rect.x, priv->balloon.rect.y,
291                           priv->balloon.rect.w, priv->balloon.rect.h);                           priv->balloon.rect.w, priv->balloon.rect.h);
292          cairo_clip (cr);          cairo_clip (cr);
293          cairo_new_path (cr);  /* current path is not          cairo_new_path (cr);  /* current path is not consumed by cairo_clip */
294                                   consumed by cairo_clip() */  
295            /* request the application to draw the balloon contents */
296            event.type = OSM_GPS_MAP_BALLOON_EVENT_TYPE_DRAW;
297            event.data.draw.rect = &priv->balloon.rect;
298            event.data.draw.cr = cr;
299    
300          priv->balloon.cb(cr, &priv->balloon.rect, priv->balloon.data);          priv->balloon.cb(&event, priv->balloon.data);
301      }      }
302    
303      cairo_destroy(cr);      cairo_destroy(cr);
304    
305        FOUT;
306  }  }
307    
308  /* return true if balloon is being displayed and if */  /* return true if balloon is being displayed and if */
309  /* the given coordinate is within this balloon */  /* the given coordinate is within this balloon */
310  static gboolean  static gboolean
311  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)
312  {  {
313        FIN;
314    
315      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
316    
317      if(!priv->balloon.surface)      if(!priv->balloon.surface)
# Line 301  osd_balloon_check(osm_gps_map_osd_t *osd Line 329  osd_balloon_check(osm_gps_map_osd_t *osd
329          (x > xs) && (x < xs + priv->balloon.rect.w) &&          (x > xs) && (x < xs + priv->balloon.rect.w) &&
330          (y > ys) && (y < ys + priv->balloon.rect.h);          (y > ys) && (y < ys + priv->balloon.rect.h);
331    
332      /* 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? */
333      /* button down event */      if(click) {
     if(!is_in && !down && !priv->balloon.just_created) {  
         /* the user actually clicked outside the balloon */  
334    
335          /* close the balloon! */          /* handle the fact that the balloon may have been created by the */
336          osm_gps_map_osd_clear_balloon (OSM_GPS_MAP(osd->widget));          /* button down event */
337      }          if(!is_in && !down && !priv->balloon.just_created) {
338                /* the user actually clicked outside the balloon */
339    
340                /* close the balloon! */
341                osm_gps_map_osd_clear_balloon (OSM_GPS_MAP(osd->widget));
342    
343                /* and inform application about this */
344                if(priv->balloon.cb) {
345                    osm_gps_map_balloon_event_t event;
346                    event.type = OSM_GPS_MAP_BALLOON_EVENT_TYPE_REMOVED;
347                    priv->balloon.cb(&event, priv->balloon.data);
348                }
349    
350            }
351    
352            if(is_in && priv->balloon.cb) {
353                osm_gps_map_balloon_event_t event;
354    
355                /* notify application of click */
356                event.type = OSM_GPS_MAP_BALLOON_EVENT_TYPE_CLICK;
357                event.data.click.x = x - xs;
358                event.data.click.y = y - ys;
359                event.data.click.down = down;
360    
361                priv->balloon.cb(&event, priv->balloon.data);
362            }
363        }
364        FOUT;
365      return is_in;      return is_in;
366  }  }
367    
368  void osm_gps_map_osd_clear_balloon (OsmGpsMap *map) {  void osm_gps_map_osd_clear_balloon (OsmGpsMap *map) {
369        FIN;
370    
371      g_return_if_fail (OSM_IS_GPS_MAP (map));      g_return_if_fail (OSM_IS_GPS_MAP (map));
372    
373      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 329  void osm_gps_map_osd_clear_balloon (OsmG Line 383  void osm_gps_map_osd_clear_balloon (OsmG
383          priv->balloon.lon = OSM_GPS_MAP_INVALID;          priv->balloon.lon = OSM_GPS_MAP_INVALID;
384      }      }
385      osm_gps_map_redraw(map);      osm_gps_map_redraw(map);
386        FOUT;
387  }  }
388    
389  void  void
390  osm_gps_map_osd_draw_balloon (OsmGpsMap *map, float latitude, float longitude,  osm_gps_map_osd_draw_balloon (OsmGpsMap *map, float latitude, float longitude,
391                                OsmGpsMapBalloonCallback cb, gpointer data) {                                OsmGpsMapBalloonCallback cb, gpointer data) {
392        FIN;
393      g_return_if_fail (OSM_IS_GPS_MAP (map));      g_return_if_fail (OSM_IS_GPS_MAP (map));
394    
395      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 360  osm_gps_map_osd_draw_balloon (OsmGpsMap Line 416  osm_gps_map_osd_draw_balloon (OsmGpsMap
416      osd_render_balloon(osd);      osd_render_balloon(osd);
417    
418      osm_gps_map_redraw(map);      osm_gps_map_redraw(map);
419        FOUT;
420  }  }
421    
422  #endif // OSD_BALLOON  #endif // OSD_BALLOON
# Line 504  osd_shape(cairo_t *cr) { Line 561  osd_shape(cairo_t *cr) {
561  static gboolean  static gboolean
562  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)
563  {  {
564        FIN;
565      return( pow(cx - x, 2) + pow(cy - y, 2) < rad * rad);      return( pow(cx - x, 2) + pow(cy - y, 2) < rad * rad);
566  }  }
567    
# Line 594  osd_check_zoom(gint x, gint y) { Line 652  osd_check_zoom(gint x, gint y) {
652  /* internal value to draw the arrow on the "puller" */  /* internal value to draw the arrow on the "puller" */
653  #define OSD_S_D0  (OSD_S_RAD/2)  #define OSD_S_D0  (OSD_S_RAD/2)
654  #ifndef OSD_FONT_SIZE  #ifndef OSD_FONT_SIZE
655  #define OSD_FONT_SIZE 16.0  #define OSD_FONT_SIZE (16.0)
656  #endif  #endif
657  #define OSD_TEXT_BORDER   (OSD_FONT_SIZE/2)  #define OSD_TEXT_BORDER   (OSD_FONT_SIZE/2)
658  #define OSD_TEXT_SKIP     (OSD_FONT_SIZE/8)  #define OSD_TEXT_SKIP     (OSD_FONT_SIZE/8)
# Line 702  osd_source_content(osm_gps_map_osd_t *os Line 760  osd_source_content(osm_gps_map_osd_t *os
760    
761  static void  static void
762  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) {
763        FIN;
764    
765      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
766    
767      if(priv->source_sel.rendered && !force_rerender)      if(!priv->source_sel.surface ||
768           (priv->source_sel.rendered && !force_rerender))
769          return;          return;
770    
771      priv->source_sel.rendered = TRUE;      priv->source_sel.rendered = TRUE;
# Line 716  osd_render_source_sel(osm_gps_map_osd_t Line 777  osd_render_source_sel(osm_gps_map_osd_t
777  #endif  #endif
778    
779      /* draw source selector */      /* draw source selector */
780        g_assert(priv->source_sel.surface);
781      cairo_t *cr = cairo_create(priv->source_sel.surface);      cairo_t *cr = cairo_create(priv->source_sel.surface);
782      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
783      cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0);      cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0);
# Line 748  osd_render_source_sel(osm_gps_map_osd_t Line 810  osd_render_source_sel(osm_gps_map_osd_t
810      cairo_stroke (cr);      cairo_stroke (cr);
811    
812      cairo_destroy(cr);      cairo_destroy(cr);
813        FOUT;
814  }  }
815    
816  /* re-allocate the buffer used to draw the menu. This is used */  /* re-allocate the buffer used to draw the menu. This is used */
817  /* to collapse/expand the buffer */  /* to collapse/expand the buffer */
818  static void  static void
819  osd_source_reallocate(osm_gps_map_osd_t *osd) {  osd_source_reallocate(osm_gps_map_osd_t *osd) {
820        FIN;
821      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
822    
823      /* re-allocate offscreen bitmap */      /* re-allocate offscreen bitmap */
# Line 764  osd_source_reallocate(osm_gps_map_osd_t Line 828  osd_source_reallocate(osm_gps_map_osd_t
828          cairo_text_extents_t extents;          cairo_text_extents_t extents;
829    
830          /* determine content size */          /* determine content size */
831            g_assert(priv->source_sel.surface);
832          cairo_t *cr = cairo_create(priv->source_sel.surface);          cairo_t *cr = cairo_create(priv->source_sel.surface);
833          cairo_select_font_face (cr, "Sans",          cairo_select_font_face (cr, "Sans",
834                                  CAIRO_FONT_SLANT_NORMAL,                                  CAIRO_FONT_SLANT_NORMAL,
# Line 794  osd_source_reallocate(osm_gps_map_osd_t Line 859  osd_source_reallocate(osm_gps_map_osd_t
859          cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w+2, h+2);          cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w+2, h+2);
860    
861      osd_render_source_sel(osd, TRUE);      osd_render_source_sel(osd, TRUE);
862        FOUT;
863  }  }
864    
865  #define OSD_HZ      15  #define OSD_HZ      15
866  #define OSD_TIME    500  #define OSD_TIME    500
867    
868  static gboolean osd_source_animate(gpointer data) {  static gboolean osd_source_animate(gpointer data) {
869        FIN;
870      osm_gps_map_osd_t *osd = (osm_gps_map_osd_t*)data;      osm_gps_map_osd_t *osd = (osm_gps_map_osd_t*)data;
871      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
872      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 838  static gboolean osd_source_animate(gpoin Line 905  static gboolean osd_source_animate(gpoin
905      if(done)      if(done)
906          priv->source_sel.handler_id = 0;          priv->source_sel.handler_id = 0;
907    
908        FOUT;
909      return !done;      return !done;
910  }  }
911    
# Line 845  static gboolean osd_source_animate(gpoin Line 913  static gboolean osd_source_animate(gpoin
913  static void  static void
914  osd_source_toggle(osm_gps_map_osd_t *osd)  osd_source_toggle(osm_gps_map_osd_t *osd)
915  {  {
916        FIN;
917      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
918    
919      /* ignore clicks while animation is running */      /* ignore clicks while animation is running */
# Line 870  osd_source_toggle(osm_gps_map_osd_t *osd Line 939  osd_source_toggle(osm_gps_map_osd_t *osd
939      /* start timer to handle animation */      /* start timer to handle animation */
940      priv->source_sel.handler_id = gtk_timeout_add(OSD_TIME/OSD_HZ,      priv->source_sel.handler_id = gtk_timeout_add(OSD_TIME/OSD_HZ,
941                                                    osd_source_animate, osd);                                                    osd_source_animate, osd);
942        FOUT;
943  }  }
944    
945  /* check if the user clicked inside the source selection area */  /* check if the user clicked inside the source selection area */
946  static osd_button_t  static osd_button_t
947  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) {
948        FIN;
949      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
950    
951      if(!priv->source_sel.expanded)      if(!priv->source_sel.expanded)
# Line 932  osd_source_check(osm_gps_map_osd_t *osd, Line 1003  osd_source_check(osm_gps_map_osd_t *osd,
1003                      osm_gps_map_repaint(OSM_GPS_MAP(osd->widget));                      osm_gps_map_repaint(OSM_GPS_MAP(osd->widget));
1004                  }                  }
1005              }              }
1006    
1007              /* return "clicked in OSD background" to prevent further */              /* return "clicked in OSD background" to prevent further */
1008              /* processing by application */              /* processing by application */
1009              return OSD_BG;              return OSD_BG;
1010          }          }
1011      }      }
1012    
1013        FOUT;
1014      return OSD_NONE;      return OSD_NONE;
1015  }  }
1016  #endif // OSD_SOURCE_SEL  #endif // OSD_SOURCE_SEL
1017    
1018  static osd_button_t  static osd_button_t
1019  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) {
1020        FIN;
1021      osd_button_t but = OSD_NONE;      osd_button_t but = OSD_NONE;
1022    
1023  #ifdef OSD_BALLOON  #ifdef OSD_BALLOON
# Line 985  osd_check(osm_gps_map_osd_t *osd, gboole Line 1058  osd_check(osm_gps_map_osd_t *osd, gboole
1058  #ifdef OSD_BALLOON  #ifdef OSD_BALLOON
1059      if(but == OSD_NONE) {      if(but == OSD_NONE) {
1060          /* check if user clicked into balloon */          /* check if user clicked into balloon */
1061          if(osd_balloon_check(osd, down, x, y))          if(osd_balloon_check(osd, click, down, x, y))
1062              but = OSD_BG;              but = OSD_BG;
1063      }      }
1064  #endif  #endif
1065    
1066        FOUT;
1067      return but;      return but;
1068  }  }
1069    
# Line 1066  osd_zoom_labels(cairo_t *cr, gint x, gin Line 1140  osd_zoom_labels(cairo_t *cr, gint x, gin
1140  #ifdef OSD_COORDINATES  #ifdef OSD_COORDINATES
1141    
1142  #ifndef OSD_COORDINATES_FONT_SIZE  #ifndef OSD_COORDINATES_FONT_SIZE
1143  #define OSD_COORDINATES_FONT_SIZE 12  #define OSD_COORDINATES_FONT_SIZE (12.0)
1144  #endif  #endif
1145    
1146  #define OSD_COORDINATES_OFFSET (OSD_COORDINATES_FONT_SIZE/6)  #define OSD_COORDINATES_OFFSET (OSD_COORDINATES_FONT_SIZE/6)
1147    
1148  #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)
1149  #define OSD_COORDINATES_H  (2*OSD_COORDINATES_FONT_SIZE+2*OSD_COORDINATES_OFFSET)  #define OSD_COORDINATES_H  (2*OSD_COORDINATES_FONT_SIZE+2*OSD_COORDINATES_OFFSET+OSD_COORDINATES_FONT_SIZE/4)
1150    
1151  /* these can be overwritten with versions that support */  /* these can be overwritten with versions that support */
1152  /* localization */  /* localization */
# Line 1133  static char Line 1207  static char
1207  /* render a string at the given screen position */  /* render a string at the given screen position */
1208  static int  static int
1209  osd_render_centered_text(cairo_t *cr, int y, int width, char *text) {  osd_render_centered_text(cairo_t *cr, int y, int width, char *text) {
1210      char *p = g_strdup(text);      FIN;
1211    
1212        if(!text) return y;
1213    
1214        char *p = g_malloc(strlen(text)+4);  // space for "...\n"
1215        strcpy(p, text);
1216    
1217      cairo_text_extents_t extents;      cairo_text_extents_t extents;
1218        memset(&extents, 0, sizeof(cairo_text_extents_t));
1219      cairo_text_extents (cr, p, &extents);      cairo_text_extents (cr, p, &extents);
1220        g_assert(extents.width != 0.0);
1221    
1222      /* check if text needs to be truncated */      /* check if text needs to be truncated */
1223      int len = strlen(text)-2;      int trunc_at = strlen(text);
1224      while(extents.width > width) {      while(extents.width > width) {
1225          len--;  
1226          strcpy(p+len, "...");          /* cut off all utf8 multibyte remains so the actual */
1227            /* truncation only deals with one byte */
1228            while((p[trunc_at-1] & 0xc0) == 0x80) {
1229                trunc_at--;
1230                g_assert(trunc_at > 0);
1231            }
1232    
1233            trunc_at--;
1234            g_assert(trunc_at > 0);
1235    
1236            strcpy(p+trunc_at, "...");
1237          cairo_text_extents (cr, p, &extents);          cairo_text_extents (cr, p, &extents);
1238      }      }
1239    
# Line 1157  osd_render_centered_text(cairo_t *cr, in Line 1249  osd_render_centered_text(cairo_t *cr, in
1249    
1250      g_free(p);      g_free(p);
1251    
1252      /* skip + 1/4 line */      /* skip + 1/5 line */
1253      return y + 5*OSD_COORDINATES_FONT_SIZE/4;      FOUT;
1254        return y + 6*OSD_COORDINATES_FONT_SIZE/5;
1255  }  }
1256    
1257  static void  static void
1258  osd_render_coordinates(osm_gps_map_osd_t *osd)  osd_render_coordinates(osm_gps_map_osd_t *osd)
1259  {  {
1260        FIN;
1261      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
1262    
1263        if(!priv->coordinates.surface)
1264            return;
1265    
1266      /* get current map position */      /* get current map position */
1267      gfloat lat, lon;      gfloat lat, lon;
1268      g_object_get(osd->widget, "latitude", &lat, "longitude", &lon, NULL);      g_object_get(osd->widget, "latitude", &lat, "longitude", &lon, NULL);
# Line 1181  osd_render_coordinates(osm_gps_map_osd_t Line 1278  osd_render_coordinates(osm_gps_map_osd_t
1278      priv->coordinates.lon = lon;      priv->coordinates.lon = lon;
1279    
1280      /* first fill with transparency */      /* first fill with transparency */
1281    
1282        g_assert(priv->coordinates.surface);
1283      cairo_t *cr = cairo_create(priv->coordinates.surface);      cairo_t *cr = cairo_create(priv->coordinates.surface);
1284      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1285      //    cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 0.5);      //    cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 0.5);
# Line 1204  osd_render_coordinates(osm_gps_map_osd_t Line 1303  osd_render_coordinates(osm_gps_map_osd_t
1303      g_free(longitude);      g_free(longitude);
1304    
1305      cairo_destroy(cr);      cairo_destroy(cr);
1306        FOUT;
1307  }  }
1308  #endif  // OSD_COORDINATES  #endif  // OSD_COORDINATES
1309    
1310  #ifdef OSD_NAV  #ifdef OSD_NAV
1311  #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)
1312  #define OSD_NAV_H  (100)  #define OSD_NAV_H  (11*OSD_COORDINATES_FONT_SIZE)
1313    
1314    /* http://mathforum.org/library/drmath/view/55417.html */
1315    static float get_bearing(float lat1, float lon1, float lat2, float lon2) {
1316      return atan2( sin(lon2 - lon1) * cos(lat2),
1317                    cos(lat1) * sin(lat2) -
1318                    sin(lat1) * cos(lat2) * cos(lon2 - lon1));
1319    }
1320    
1321    /* http://mathforum.org/library/drmath/view/51722.html */
1322    static float get_distance(float lat1, float lon1, float lat2, float lon2) {
1323      float aob = acos(cos(lat1) * cos(lat2) * cos(lon2 - lon1) +
1324                       sin(lat1) * sin(lat2));
1325    
1326      //  return(aob * 3959.0);   /* great circle radius in miles */
1327    
1328      return(aob * 6371000.0);     /* great circle radius in meters */
1329    }
1330    
1331  static void  static void
1332  osd_render_nav(osm_gps_map_osd_t *osd)  osd_render_nav(osm_gps_map_osd_t *osd)
1333  {  {
1334        FIN;
1335      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
1336    
1337      if(!priv->nav.surface || isnan(priv->nav.lat) || isnan(priv->nav.lon))      if(!priv->nav.surface || isnan(priv->nav.lat) || isnan(priv->nav.lon))
1338          return;          return;
1339    
1340      /* first fill with transparency */      /* first fill with transparency */
1341        g_assert(priv->nav.surface);
1342      cairo_t *cr = cairo_create(priv->nav.surface);      cairo_t *cr = cairo_create(priv->nav.surface);
1343      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1344      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);
1345      cairo_paint(cr);      cairo_paint(cr);
1346      cairo_set_operator(cr, CAIRO_OPERATOR_OVER);      cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1347    
# Line 1242  osd_render_nav(osm_gps_map_osd_t *osd) Line 1361  osd_render_nav(osm_gps_map_osd_t *osd)
1361      g_free(latitude);      g_free(latitude);
1362      g_free(longitude);      g_free(longitude);
1363    
1364        /* draw the compass */
1365        int radius = (OSD_NAV_H - y - 5*OSD_COORDINATES_FONT_SIZE/4)/2;
1366        if(radius > OSD_NAV_W/2)
1367            radius = OSD_NAV_W/2;
1368    
1369        int x = OSD_NAV_W/2+1;
1370        y += radius;
1371    
1372        cairo_stroke (cr);
1373    
1374        /* draw background */
1375        cairo_arc(cr, x, y, radius, 0,  2*M_PI);
1376        cairo_set_source_rgba (cr, 1, 1, 1, 0.5);
1377        cairo_fill_preserve (cr);
1378        cairo_set_source_rgb (cr, 0, 0, 0);
1379        cairo_set_line_width (cr, 1);
1380        cairo_stroke (cr);
1381    
1382        /* draw pointer */
1383    #define ARROW_WIDTH     0.3
1384    #define ARROW_LENGTH    0.7
1385    
1386        coord_t *gps = osm_gps_map_get_gps (OSM_GPS_MAP(osd->widget));
1387        if(gps) {
1388            float arot = get_bearing(gps->rlat, gps->rlon,
1389                         deg2rad(priv->nav.lat), deg2rad(priv->nav.lon));
1390    
1391            cairo_move_to(cr,
1392                          x + radius *  ARROW_LENGTH *  sin(arot),
1393                          y + radius *  ARROW_LENGTH * -cos(arot));
1394    
1395            cairo_line_to(cr,
1396                          x + radius * -ARROW_LENGTH *  sin(arot+ARROW_WIDTH),
1397                          y + radius * -ARROW_LENGTH * -cos(arot+ARROW_WIDTH));
1398    
1399            cairo_line_to(cr,
1400                          x + radius * -0.5 * ARROW_LENGTH *  sin(arot),
1401                          y + radius * -0.5 * ARROW_LENGTH * -cos(arot));
1402    
1403            cairo_line_to(cr,
1404                          x + radius * -ARROW_LENGTH *  sin(arot-ARROW_WIDTH),
1405                          y + radius * -ARROW_LENGTH * -cos(arot-ARROW_WIDTH));
1406    
1407            cairo_close_path(cr);
1408            cairo_set_source_rgb (cr, 0, 0, 0);
1409            cairo_fill (cr);
1410    
1411            y += radius + OSD_COORDINATES_FONT_SIZE/4;
1412    
1413            float dist = get_distance(gps->rlat, gps->rlon,
1414                            deg2rad(priv->nav.lat), deg2rad(priv->nav.lon));
1415    
1416            char *dist_str = NULL;
1417            if(!priv->nav.imperial) {
1418                /* metric is easy ... */
1419                if(dist<1000)
1420                    dist_str = g_strdup_printf("%u m", (int)dist);
1421                else
1422                    dist_str = g_strdup_printf("%.1f km", dist/1000);
1423            } else {
1424                /* and now the hard part: scale for useful imperial values :-( */
1425                /* try to convert to feet, 1ft == 0.3048 m */
1426    
1427                if(dist/(3*0.3048) >= 1760.0)      /* more than 1760 yard? */
1428                    dist_str = g_strdup_printf("%.1f mi", dist/(0.3048*3*1760.0));
1429                else if(dist/0.3048 >= 100)        /* more than 100 feet? */
1430                    dist_str = g_strdup_printf("%.1f yd", dist/(0.3048*3));
1431                else
1432                    dist_str = g_strdup_printf("%.0f ft", dist/0.3048);
1433            }
1434    
1435            y = osd_render_centered_text(cr, y, OSD_NAV_W, dist_str);
1436            g_free(dist_str);
1437        }
1438    
1439      cairo_destroy(cr);      cairo_destroy(cr);
1440        FOUT;
1441  }  }
1442    
1443  void osm_gps_map_osd_clear_nav (OsmGpsMap *map) {  void osm_gps_map_osd_clear_nav (OsmGpsMap *map) {
1444        FIN;
1445      g_return_if_fail (OSM_IS_GPS_MAP (map));      g_return_if_fail (OSM_IS_GPS_MAP (map));
1446    
1447      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 1262  void osm_gps_map_osd_clear_nav (OsmGpsMa Line 1458  void osm_gps_map_osd_clear_nav (OsmGpsMa
1458          if(priv->nav.name) g_free(priv->nav.name);          if(priv->nav.name) g_free(priv->nav.name);
1459      }      }
1460      osm_gps_map_redraw(map);      osm_gps_map_redraw(map);
1461        FOUT;
1462  }  }
1463    
1464  void  void
1465  osm_gps_map_osd_draw_nav (OsmGpsMap *map, float latitude, float longitude,  osm_gps_map_osd_draw_nav (OsmGpsMap *map, gboolean imperial,
1466                            char *name) {                            float latitude, float longitude, char *name) {
1467        FIN;
1468      g_return_if_fail (OSM_IS_GPS_MAP (map));      g_return_if_fail (OSM_IS_GPS_MAP (map));
1469    
1470      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 1285  osm_gps_map_osd_draw_nav (OsmGpsMap *map Line 1483  osm_gps_map_osd_draw_nav (OsmGpsMap *map
1483      priv->nav.lat = latitude;      priv->nav.lat = latitude;
1484      priv->nav.lon = longitude;      priv->nav.lon = longitude;
1485      priv->nav.name = g_strdup(name);      priv->nav.name = g_strdup(name);
1486        priv->nav.imperial = imperial;
1487    
1488      osd_render_nav(osd);      osd_render_nav(osd);
1489    
1490      osm_gps_map_redraw(map);      osm_gps_map_redraw(map);
1491        FOUT;
1492  }  }
1493    
1494  #endif // OSD_NAV  #endif // OSD_NAV
# Line 1307  osm_gps_map_osd_draw_nav (OsmGpsMap *map Line 1507  osm_gps_map_osd_draw_nav (OsmGpsMap *map
1507    
1508  static void  static void
1509  osd_render_crosshair_shape(cairo_t *cr) {  osd_render_crosshair_shape(cairo_t *cr) {
1510        FIN;
1511      cairo_arc (cr, OSD_CROSSHAIR_W/2, OSD_CROSSHAIR_H/2,      cairo_arc (cr, OSD_CROSSHAIR_W/2, OSD_CROSSHAIR_H/2,
1512                 OSD_CROSSHAIR_RADIUS, 0,  2*M_PI);                 OSD_CROSSHAIR_RADIUS, 0,  2*M_PI);
1513    
# Line 1325  osd_render_crosshair_shape(cairo_t *cr) Line 1526  osd_render_crosshair_shape(cairo_t *cr)
1526      cairo_rel_line_to (cr, 0, OSD_CROSSHAIR_TICK);      cairo_rel_line_to (cr, 0, OSD_CROSSHAIR_TICK);
1527    
1528      cairo_stroke (cr);      cairo_stroke (cr);
1529        FOUT;
1530  }  }
1531    
1532  static void  static void
1533  osd_render_crosshair(osm_gps_map_osd_t *osd)  osd_render_crosshair(osm_gps_map_osd_t *osd)
1534  {  {
1535        FIN;
1536      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
1537    
1538      if(priv->crosshair.rendered)      if(!priv->crosshair.surface || priv->crosshair.rendered)
1539          return;          return;
1540    
1541      priv->crosshair.rendered = TRUE;      priv->crosshair.rendered = TRUE;
1542    
1543      /* first fill with transparency */      /* first fill with transparency */
1544        g_assert(priv->crosshair.surface);
1545      cairo_t *cr = cairo_create(priv->crosshair.surface);      cairo_t *cr = cairo_create(priv->crosshair.surface);
1546      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1547      cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);      cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
# Line 1355  osd_render_crosshair(osm_gps_map_osd_t * Line 1559  osd_render_crosshair(osm_gps_map_osd_t *
1559      osd_render_crosshair_shape(cr);      osd_render_crosshair_shape(cr);
1560    
1561      cairo_destroy(cr);      cairo_destroy(cr);
1562        FOUT;
1563  }  }
1564  #endif  #endif
1565    
1566  #ifdef OSD_SCALE  #ifdef OSD_SCALE
1567    
1568  #ifndef OSD_SCALE_FONT_SIZE  #ifndef OSD_SCALE_FONT_SIZE
1569  #define OSD_SCALE_FONT_SIZE 12  #define OSD_SCALE_FONT_SIZE (12.0)
1570  #endif  #endif
1571  #define OSD_SCALE_W   (10*OSD_SCALE_FONT_SIZE)  #define OSD_SCALE_W   (10*OSD_SCALE_FONT_SIZE)
1572  #define OSD_SCALE_H   (5*OSD_SCALE_FONT_SIZE/2)  #define OSD_SCALE_H   (5*OSD_SCALE_FONT_SIZE/2)
# Line 1376  osd_render_crosshair(osm_gps_map_osd_t * Line 1581  osd_render_crosshair(osm_gps_map_osd_t *
1581  static void  static void
1582  osd_render_scale(osm_gps_map_osd_t *osd)  osd_render_scale(osm_gps_map_osd_t *osd)
1583  {  {
1584        FIN;
1585      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
1586    
1587        if(!priv->scale.surface)
1588            return;
1589    
1590      /* this only needs to be rendered if the zoom has changed */      /* this only needs to be rendered if the zoom has changed */
1591      gint zoom;      gint zoom;
1592      g_object_get(OSM_GPS_MAP(osd->widget), "zoom", &zoom, NULL);      g_object_get(OSM_GPS_MAP(osd->widget), "zoom", &zoom, NULL);
# Line 1389  osd_render_scale(osm_gps_map_osd_t *osd) Line 1598  osd_render_scale(osm_gps_map_osd_t *osd)
1598      float m_per_pix = osm_gps_map_get_scale(OSM_GPS_MAP(osd->widget));      float m_per_pix = osm_gps_map_get_scale(OSM_GPS_MAP(osd->widget));
1599    
1600      /* first fill with transparency */      /* first fill with transparency */
1601        g_assert(priv->scale.surface);
1602      cairo_t *cr = cairo_create(priv->scale.surface);      cairo_t *cr = cairo_create(priv->scale.surface);
1603      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1604      cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0);      cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0);
# Line 1499  osd_render_scale(osm_gps_map_osd_t *osd) Line 1709  osd_render_scale(osm_gps_map_osd_t *osd)
1709      cairo_stroke(cr);      cairo_stroke(cr);
1710    
1711      cairo_destroy(cr);      cairo_destroy(cr);
1712        FOUT;
1713  }  }
1714  #endif  #endif
1715    
1716  static void  static void
1717  osd_render_controls(osm_gps_map_osd_t *osd)  osd_render_controls(osm_gps_map_osd_t *osd)
1718  {  {
1719        FIN;
1720      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
1721    
1722        if(!priv->controls.surface)
1723            return;
1724    
1725      if(priv->controls.rendered      if(priv->controls.rendered
1726  #ifdef OSD_GPS_BUTTON  #ifdef OSD_GPS_BUTTON
1727         && (priv->controls.gps_enabled == (osd->cb != NULL))         && (priv->controls.gps_enabled == (osd->cb != NULL))
# Line 1526  osd_render_controls(osm_gps_map_osd_t *o Line 1741  osd_render_controls(osm_gps_map_osd_t *o
1741  #endif  #endif
1742    
1743      /* first fill with transparency */      /* first fill with transparency */
1744        g_assert(priv->controls.surface);
1745      cairo_t *cr = cairo_create(priv->controls.surface);      cairo_t *cr = cairo_create(priv->controls.surface);
1746      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1747      cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0);      cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0);
# Line 1778  osd_draw(osm_gps_map_osd_t *osd, GdkDraw Line 1994  osd_draw(osm_gps_map_osd_t *osd, GdkDraw
1994  #endif  #endif
1995    
1996      cairo_destroy(cr);      cairo_destroy(cr);
1997        FOUT;
1998  }  }
1999    
2000  static void  static void
2001  osd_free(osm_gps_map_osd_t *osd)  osd_free(osm_gps_map_osd_t *osd)
2002  {  {
2003        FIN;
2004      osd_priv_t *priv = (osd_priv_t *)(osd->priv);      osd_priv_t *priv = (osd_priv_t *)(osd->priv);
2005    
2006      if (priv->controls.surface)      if (priv->controls.surface)
# Line 1822  osd_free(osm_gps_map_osd_t *osd) Line 2040  osd_free(osm_gps_map_osd_t *osd)
2040  #endif  #endif
2041    
2042      g_free(priv);      g_free(priv);
2043        FOUT;
2044  }  }
2045    
2046  static gboolean  static gboolean
2047  osd_busy(osm_gps_map_osd_t *osd)  osd_busy(osm_gps_map_osd_t *osd)
2048  {  {
2049        FIN;
2050  #ifdef OSD_SOURCE_SEL  #ifdef OSD_SOURCE_SEL
2051      osd_priv_t *priv = (osd_priv_t *)(osd->priv);      osd_priv_t *priv = (osd_priv_t *)(osd->priv);
2052      return (priv->source_sel.handler_id != 0);      return (priv->source_sel.handler_id != 0);
# Line 1835  osd_busy(osm_gps_map_osd_t *osd) Line 2055  osd_busy(osm_gps_map_osd_t *osd)
2055  #endif  #endif
2056  }  }
2057    
2058    static osd_button_t
2059    osd_check(osm_gps_map_osd_t *osd, gboolean down, gint x, gint y) {
2060        FIN;
2061        return osd_check_int(osd, TRUE, down, x, y);
2062    }
2063    
2064  static osm_gps_map_osd_t osd_classic = {  static osm_gps_map_osd_t osd_classic = {
2065      .widget     = NULL,      .widget     = NULL,
2066    
# Line 1854  static osm_gps_map_osd_t osd_classic = { Line 2080  static osm_gps_map_osd_t osd_classic = {
2080  void  void
2081  osm_gps_map_osd_classic_init(OsmGpsMap *map)  osm_gps_map_osd_classic_init(OsmGpsMap *map)
2082  {  {
2083        FIN;
2084      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);
2085    
2086  #ifdef OSD_BALLOON  #ifdef OSD_BALLOON
# Line 1864  osm_gps_map_osd_classic_init(OsmGpsMap * Line 2091  osm_gps_map_osd_classic_init(OsmGpsMap *
2091      osd_classic.priv = priv;      osd_classic.priv = priv;
2092    
2093      osm_gps_map_register_osd(map, &osd_classic);      osm_gps_map_register_osd(map, &osd_classic);
2094        FOUT;
2095  }  }
2096    
2097  #ifdef OSD_GPS_BUTTON  #ifdef OSD_GPS_BUTTON
# Line 1871  osm_gps_map_osd_classic_init(OsmGpsMap * Line 2099  osm_gps_map_osd_classic_init(OsmGpsMap *
2099  /* but instead are to be used by the main application */  /* but instead are to be used by the main application */
2100  void osm_gps_map_osd_enable_gps (OsmGpsMap *map, OsmGpsMapOsdCallback cb,  void osm_gps_map_osd_enable_gps (OsmGpsMap *map, OsmGpsMapOsdCallback cb,
2101                                   gpointer data) {                                   gpointer data) {
2102        FIN;
2103      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
2104      g_return_if_fail (osd);      g_return_if_fail (osd);
2105    
# Line 1882  void osm_gps_map_osd_enable_gps (OsmGpsM Line 2111  void osm_gps_map_osd_enable_gps (OsmGpsM
2111      osd->render(osd);      osd->render(osd);
2112    
2113      osm_gps_map_redraw(map);      osm_gps_map_redraw(map);
2114        FOUT;
2115  }  }
2116  #endif  #endif
2117    
2118  osd_button_t  osd_button_t
2119  osm_gps_map_osd_check(OsmGpsMap *map, gint x, gint y) {  osm_gps_map_osd_check(OsmGpsMap *map, gint x, gint y) {
2120        FIN;
2121      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
2122      g_return_val_if_fail (osd, OSD_NONE);      g_return_val_if_fail (osd, OSD_NONE);
2123    
2124      return osd_check(osd, TRUE, x, y);      return osd_check_int(osd, FALSE, TRUE, x, y);
2125  }  }
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  Added in v.152