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

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revision 120 by harbaum, Sat Sep 19 19:19:42 2009 UTC revision 147 by harbaum, Wed Oct 28 11:50:37 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 285  osd_balloon_check(osm_gps_map_osd_t *osd Line 313  osd_balloon_check(osm_gps_map_osd_t *osd
313                                        priv->balloon.lat, priv->balloon.lon,                                        priv->balloon.lat, priv->balloon.lon,
314                                        &xs, &ys);                                        &xs, &ys);
315    
     printf("click at %d/%d\n", x, y);  
   
316      xs += priv->balloon.rect.x + priv->balloon.offset_x;      xs += priv->balloon.rect.x + priv->balloon.offset_x;
317      ys += priv->balloon.rect.y + priv->balloon.offset_y;      ys += priv->balloon.rect.y + priv->balloon.offset_y;
318    
     printf("balloon at %d/%d/%d/%d\n",  
            xs, ys,  
            xs + priv->balloon.rect.w,  
            ys + priv->balloon.rect.h);  
   
319      gboolean is_in =      gboolean is_in =
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 327  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 358  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 502  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 592  osd_check_zoom(gint x, gint y) { Line 643  osd_check_zoom(gint x, gint y) {
643  /* internal value to draw the arrow on the "puller" */  /* internal value to draw the arrow on the "puller" */
644  #define OSD_S_D0  (OSD_S_RAD/2)  #define OSD_S_D0  (OSD_S_RAD/2)
645  #ifndef OSD_FONT_SIZE  #ifndef OSD_FONT_SIZE
646  #define OSD_FONT_SIZE 16.0  #define OSD_FONT_SIZE (16.0)
647  #endif  #endif
648  #define OSD_TEXT_BORDER   (OSD_FONT_SIZE/2)  #define OSD_TEXT_BORDER   (OSD_FONT_SIZE/2)
649  #define OSD_TEXT_SKIP     (OSD_FONT_SIZE/8)  #define OSD_TEXT_SKIP     (OSD_FONT_SIZE/8)
# Line 700  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 746  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 792  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 836  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 843  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 868  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 930  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 983  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 1064  osd_zoom_labels(cairo_t *cr, gint x, gin Line 1128  osd_zoom_labels(cairo_t *cr, gint x, gin
1128  #ifdef OSD_COORDINATES  #ifdef OSD_COORDINATES
1129    
1130  #ifndef OSD_COORDINATES_FONT_SIZE  #ifndef OSD_COORDINATES_FONT_SIZE
1131  #define OSD_COORDINATES_FONT_SIZE 12  #define OSD_COORDINATES_FONT_SIZE (12.0)
1132  #endif  #endif
1133    
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 1128  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    
1211        memset(&extents, 0, sizeof(cairo_text_extents_t));
1212        cairo_text_extents (cr, p, &extents);
1213        printf("initial extents.width = %f\n", extents.width);  // XXX
1214    
1215        /* check if text needs to be truncated */
1216        int trunc_at = strlen(text)-1;
1217        while(extents.width > width) {
1218            g_assert(trunc_at > 0);
1219    
1220            printf("trunc at %d\n", trunc_at);  // XXX
1221    
1222            trunc_at--;
1223            strcpy(p+trunc_at, "...");
1224            printf("getting extents for \"%s\"\n", p);  // XXX
1225    
1226            memset(&extents, 0, sizeof(cairo_text_extents_t));
1227            cairo_text_extents (cr, p, &extents);
1228            printf("extents.width = %f > %d\n", extents.width, width);  // XXX
1229        }
1230    
1231        printf("painting\n"); // XXX
1232    
1233        cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
1234        cairo_set_line_width (cr, OSD_COORDINATES_FONT_SIZE/6);
1235        cairo_move_to (cr, (width - extents.width)/2, y - extents.y_bearing);
1236        cairo_text_path (cr, p);
1237        cairo_stroke (cr);
1238    
1239        cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
1240        cairo_move_to (cr, (width - extents.width)/2, y - extents.y_bearing);
1241        cairo_show_text (cr, p);
1242    
1243        g_free(p);
1244    
1245        /* skip + 1/5 line */
1246        FOUT;
1247        return y + 6*OSD_COORDINATES_FONT_SIZE/5;
1248    }
1249    
1250  static void  static void
1251  osd_render_coordinates(osm_gps_map_osd_t *osd)  osd_render_coordinates(osm_gps_map_osd_t *osd)
1252  {  {
1253        FIN;
1254      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
1255    
1256      /* get current map position */      /* get current map position */
# Line 1163  osd_render_coordinates(osm_gps_map_osd_t Line 1283  osd_render_coordinates(osm_gps_map_osd_t
1283      char *latitude = osd_latitude_str(lat);      char *latitude = osd_latitude_str(lat);
1284      char *longitude = osd_longitude_str(lon);      char *longitude = osd_longitude_str(lon);
1285    
1286      cairo_text_extents_t lat_extents, lon_extents;      int y = OSD_COORDINATES_OFFSET;
1287      cairo_text_extents (cr, latitude, &lat_extents);      y = osd_render_centered_text(cr, y, OSD_COORDINATES_W, latitude);
1288      cairo_text_extents (cr, longitude, &lon_extents);      y = osd_render_centered_text(cr, y, OSD_COORDINATES_W, longitude);
1289    
1290        g_free(latitude);
1291        g_free(longitude);
1292    
1293      cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);      cairo_destroy(cr);
1294      cairo_set_line_width (cr, OSD_COORDINATES_FONT_SIZE/6);      FOUT;
1295      cairo_move_to (cr,  }
1296                     (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);  
1297    
1298      cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);  #ifdef OSD_NAV
1299      cairo_move_to (cr,  #define OSD_NAV_W  (8*OSD_COORDINATES_FONT_SIZE+2*OSD_COORDINATES_OFFSET)
1300                     (OSD_COORDINATES_W - lat_extents.width)/2,  #define OSD_NAV_H  (11*OSD_COORDINATES_FONT_SIZE)
                    OSD_COORDINATES_OFFSET - lat_extents.y_bearing);  
     cairo_show_text (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_show_text (cr, longitude);  
1301    
1302    /* http://mathforum.org/library/drmath/view/55417.html */
1303    static float get_bearing(float lat1, float lon1, float lat2, float lon2) {
1304      return atan2( sin(lon2 - lon1) * cos(lat2),
1305                    cos(lat1) * sin(lat2) -
1306                    sin(lat1) * cos(lat2) * cos(lon2 - lon1));
1307    }
1308    
1309    /* http://mathforum.org/library/drmath/view/51722.html */
1310    static float get_distance(float lat1, float lon1, float lat2, float lon2) {
1311      float aob = acos(cos(lat1) * cos(lat2) * cos(lon2 - lon1) +
1312                       sin(lat1) * sin(lat2));
1313    
1314      //  return(aob * 3959.0);   /* great circle radius in miles */
1315    
1316      return(aob * 6371000.0);     /* great circle radius in meters */
1317    }
1318    
1319    static void
1320    osd_render_nav(osm_gps_map_osd_t *osd)
1321    {
1322        FIN;
1323        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1324    
1325        if(!priv->nav.surface || isnan(priv->nav.lat) || isnan(priv->nav.lon))
1326            return;
1327    
1328        /* first fill with transparency */
1329        cairo_t *cr = cairo_create(priv->nav.surface);
1330        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1331        cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0);
1332        cairo_paint(cr);
1333        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1334    
1335        cairo_select_font_face (cr, "Sans",
1336                                CAIRO_FONT_SLANT_NORMAL,
1337                                CAIRO_FONT_WEIGHT_BOLD);
1338        cairo_set_font_size (cr, OSD_COORDINATES_FONT_SIZE);
1339    
1340        char *latitude = osd_latitude_str(priv->nav.lat);
1341        char *longitude = osd_longitude_str(priv->nav.lon);
1342    
1343        int y = OSD_COORDINATES_OFFSET;
1344        y = osd_render_centered_text(cr, y, OSD_NAV_W, priv->nav.name);
1345        y = osd_render_centered_text(cr, y, OSD_NAV_W, latitude);
1346        y = osd_render_centered_text(cr, y, OSD_NAV_W, longitude);
1347    
1348      g_free(latitude);      g_free(latitude);
1349      g_free(longitude);      g_free(longitude);
1350    
1351        /* draw the compass */
1352        int radius = (OSD_NAV_H - y - 5*OSD_COORDINATES_FONT_SIZE/4)/2;
1353        if(radius > OSD_NAV_W/2)
1354            radius = OSD_NAV_W/2;
1355    
1356        int x = OSD_NAV_W/2+1;
1357        y += radius;
1358    
1359        cairo_stroke (cr);
1360    
1361        /* draw background */
1362        cairo_arc(cr, x, y, radius, 0,  2*M_PI);
1363        cairo_set_source_rgba (cr, 1, 1, 1, 0.5);
1364        cairo_fill_preserve (cr);
1365        cairo_set_source_rgb (cr, 0, 0, 0);
1366        cairo_set_line_width (cr, 1);
1367        cairo_stroke (cr);
1368    
1369        /* draw pointer */
1370    #define ARROW_WIDTH     0.3
1371    #define ARROW_LENGTH    0.7
1372    
1373        coord_t *gps = osm_gps_map_get_gps (OSM_GPS_MAP(osd->widget));
1374        if(gps) {
1375            float arot = get_bearing(gps->rlat, gps->rlon,
1376                         deg2rad(priv->nav.lat), deg2rad(priv->nav.lon));
1377    
1378            cairo_move_to(cr,
1379                          x + radius *  ARROW_LENGTH *  sin(arot),
1380                          y + radius *  ARROW_LENGTH * -cos(arot));
1381    
1382            cairo_line_to(cr,
1383                          x + radius * -ARROW_LENGTH *  sin(arot+ARROW_WIDTH),
1384                          y + radius * -ARROW_LENGTH * -cos(arot+ARROW_WIDTH));
1385    
1386            cairo_line_to(cr,
1387                          x + radius * -0.5 * ARROW_LENGTH *  sin(arot),
1388                          y + radius * -0.5 * ARROW_LENGTH * -cos(arot));
1389    
1390            cairo_line_to(cr,
1391                          x + radius * -ARROW_LENGTH *  sin(arot-ARROW_WIDTH),
1392                          y + radius * -ARROW_LENGTH * -cos(arot-ARROW_WIDTH));
1393    
1394            cairo_close_path(cr);
1395            cairo_set_source_rgb (cr, 0, 0, 0);
1396            cairo_fill (cr);
1397    
1398            y += radius + OSD_COORDINATES_FONT_SIZE/4;
1399    
1400            float dist = get_distance(gps->rlat, gps->rlon,
1401                            deg2rad(priv->nav.lat), deg2rad(priv->nav.lon));
1402    
1403            char *dist_str = NULL;
1404            if(!priv->nav.imperial) {
1405                /* metric is easy ... */
1406                if(dist<1000)
1407                    dist_str = g_strdup_printf("%u m", (int)dist);
1408                else
1409                    dist_str = g_strdup_printf("%.1f km", dist/1000);
1410            } else {
1411                /* and now the hard part: scale for useful imperial values :-( */
1412                /* try to convert to feet, 1ft == 0.3048 m */
1413    
1414                if(dist/(3*0.3048) >= 1760.0)      /* more than 1760 yard? */
1415                    dist_str = g_strdup_printf("%.1f mi", dist/(0.3048*3*1760.0));
1416                else if(dist/0.3048 >= 100)        /* more than 100 feet? */
1417                    dist_str = g_strdup_printf("%.1f yd", dist/(0.3048*3));
1418                else
1419                    dist_str = g_strdup_printf("%.0f ft", dist/0.3048);
1420            }
1421    
1422            y = osd_render_centered_text(cr, y, OSD_NAV_W, dist_str);
1423            g_free(dist_str);
1424        }
1425    
1426      cairo_destroy(cr);      cairo_destroy(cr);
1427        FOUT;
1428  }  }
1429  #endif  // OSD_COORDINATES  
1430    void osm_gps_map_osd_clear_nav (OsmGpsMap *map) {
1431        FIN;
1432        g_return_if_fail (OSM_IS_GPS_MAP (map));
1433    
1434        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
1435        g_return_if_fail (osd);
1436    
1437        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1438        g_return_if_fail (priv);
1439    
1440        if(priv->nav.surface) {
1441            cairo_surface_destroy(priv->nav.surface);
1442            priv->nav.surface = NULL;
1443            priv->nav.lat = OSM_GPS_MAP_INVALID;
1444            priv->nav.lon = OSM_GPS_MAP_INVALID;
1445            if(priv->nav.name) g_free(priv->nav.name);
1446        }
1447        osm_gps_map_redraw(map);
1448        FOUT;
1449    }
1450    
1451    void
1452    osm_gps_map_osd_draw_nav (OsmGpsMap *map, gboolean imperial,
1453                              float latitude, float longitude, char *name) {
1454        FIN;
1455        g_return_if_fail (OSM_IS_GPS_MAP (map));
1456    
1457        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
1458        g_return_if_fail (osd);
1459    
1460        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1461        g_return_if_fail (priv);
1462    
1463        osm_gps_map_osd_clear_nav (map);
1464    
1465        /* allocate balloon surface */
1466        priv->nav.surface =
1467            cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1468                                       OSD_NAV_W+2, OSD_NAV_H+2);
1469    
1470        priv->nav.lat = latitude;
1471        priv->nav.lon = longitude;
1472        priv->nav.name = g_strdup(name);
1473        priv->nav.imperial = imperial;
1474    
1475        osd_render_nav(osd);
1476    
1477        osm_gps_map_redraw(map);
1478        FOUT;
1479    }
1480    
1481    #endif // OSD_NAV
1482    
1483    
1484  #ifdef OSD_CROSSHAIR  #ifdef OSD_CROSSHAIR
1485    
# Line 1211  osd_render_coordinates(osm_gps_map_osd_t Line 1494  osd_render_coordinates(osm_gps_map_osd_t
1494    
1495  static void  static void
1496  osd_render_crosshair_shape(cairo_t *cr) {  osd_render_crosshair_shape(cairo_t *cr) {
1497        FIN;
1498      cairo_arc (cr, OSD_CROSSHAIR_W/2, OSD_CROSSHAIR_H/2,      cairo_arc (cr, OSD_CROSSHAIR_W/2, OSD_CROSSHAIR_H/2,
1499                 OSD_CROSSHAIR_RADIUS, 0,  2*M_PI);                 OSD_CROSSHAIR_RADIUS, 0,  2*M_PI);
1500    
# Line 1229  osd_render_crosshair_shape(cairo_t *cr) Line 1513  osd_render_crosshair_shape(cairo_t *cr)
1513      cairo_rel_line_to (cr, 0, OSD_CROSSHAIR_TICK);      cairo_rel_line_to (cr, 0, OSD_CROSSHAIR_TICK);
1514    
1515      cairo_stroke (cr);      cairo_stroke (cr);
1516        FOUT;
1517  }  }
1518    
1519  static void  static void
1520  osd_render_crosshair(osm_gps_map_osd_t *osd)  osd_render_crosshair(osm_gps_map_osd_t *osd)
1521  {  {
1522        FIN;
1523      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
1524    
1525      if(priv->crosshair.rendered)      if(priv->crosshair.rendered)
# Line 1259  osd_render_crosshair(osm_gps_map_osd_t * Line 1545  osd_render_crosshair(osm_gps_map_osd_t *
1545      osd_render_crosshair_shape(cr);      osd_render_crosshair_shape(cr);
1546    
1547      cairo_destroy(cr);      cairo_destroy(cr);
1548        FOUT;
1549  }  }
1550  #endif  #endif
1551    
1552  #ifdef OSD_SCALE  #ifdef OSD_SCALE
1553    
1554  #ifndef OSD_SCALE_FONT_SIZE  #ifndef OSD_SCALE_FONT_SIZE
1555  #define OSD_SCALE_FONT_SIZE 12  #define OSD_SCALE_FONT_SIZE (12.0)
1556  #endif  #endif
1557  #define OSD_SCALE_W   (10*OSD_SCALE_FONT_SIZE)  #define OSD_SCALE_W   (10*OSD_SCALE_FONT_SIZE)
1558  #define OSD_SCALE_H   (5*OSD_SCALE_FONT_SIZE/2)  #define OSD_SCALE_H   (5*OSD_SCALE_FONT_SIZE/2)
# Line 1280  osd_render_crosshair(osm_gps_map_osd_t * Line 1567  osd_render_crosshair(osm_gps_map_osd_t *
1567  static void  static void
1568  osd_render_scale(osm_gps_map_osd_t *osd)  osd_render_scale(osm_gps_map_osd_t *osd)
1569  {  {
1570        FIN;
1571      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
1572    
1573      /* this only needs to be rendered if the zoom has changed */      /* this only needs to be rendered if the zoom has changed */
# Line 1403  osd_render_scale(osm_gps_map_osd_t *osd) Line 1691  osd_render_scale(osm_gps_map_osd_t *osd)
1691      cairo_stroke(cr);      cairo_stroke(cr);
1692    
1693      cairo_destroy(cr);      cairo_destroy(cr);
1694        FOUT;
1695  }  }
1696  #endif  #endif
1697    
1698  static void  static void
1699  osd_render_controls(osm_gps_map_osd_t *osd)  osd_render_controls(osm_gps_map_osd_t *osd)
1700  {  {
1701        FIN;
1702      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
1703    
1704      if(priv->controls.rendered      if(priv->controls.rendered
# Line 1525  osd_render(osm_gps_map_osd_t *osd) Line 1815  osd_render(osm_gps_map_osd_t *osd)
1815      osd_render_crosshair(osd);      osd_render_crosshair(osd);
1816  #endif  #endif
1817    
1818    #ifdef OSD_NAV
1819        osd_render_nav(osd);
1820    #endif
1821    
1822  #ifdef OSD_COORDINATES  #ifdef OSD_COORDINATES
1823      osd_render_coordinates(osd);      osd_render_coordinates(osd);
1824  #endif  #endif
# Line 1604  osd_draw(osm_gps_map_osd_t *osd, GdkDraw Line 1898  osd_draw(osm_gps_map_osd_t *osd, GdkDraw
1898      cairo_paint(cr);      cairo_paint(cr);
1899  #endif  #endif
1900    
1901    #ifdef OSD_NAV
1902        if(priv->nav.surface) {
1903            x =  OSD_X;
1904            if(x < 0) x += osd->widget->allocation.width - OSD_NAV_W;
1905            y = (osd->widget->allocation.height - OSD_NAV_H)/2;
1906    
1907            cairo_set_source_surface(cr, priv->nav.surface, x, y);
1908            cairo_paint(cr);
1909        }
1910    #endif
1911    
1912  #ifdef OSD_COORDINATES  #ifdef OSD_COORDINATES
1913      x = -OSD_X;      x = -OSD_X;
1914      y = -OSD_Y;      y = -OSD_Y;
# Line 1667  osd_draw(osm_gps_map_osd_t *osd, GdkDraw Line 1972  osd_draw(osm_gps_map_osd_t *osd, GdkDraw
1972  #endif  #endif
1973    
1974      cairo_destroy(cr);      cairo_destroy(cr);
1975        FOUT;
1976  }  }
1977    
1978  static void  static void
1979  osd_free(osm_gps_map_osd_t *osd)  osd_free(osm_gps_map_osd_t *osd)
1980  {  {
1981        FIN;
1982      osd_priv_t *priv = (osd_priv_t *)(osd->priv);      osd_priv_t *priv = (osd_priv_t *)(osd->priv);
1983    
1984      if (priv->controls.surface)      if (priv->controls.surface)
# Line 1695  osd_free(osm_gps_map_osd_t *osd) Line 2002  osd_free(osm_gps_map_osd_t *osd)
2002           cairo_surface_destroy(priv->crosshair.surface);           cairo_surface_destroy(priv->crosshair.surface);
2003  #endif  #endif
2004    
2005    #ifdef OSD_NAV
2006        if (priv->nav.surface)
2007             cairo_surface_destroy(priv->nav.surface);
2008    #endif
2009    
2010  #ifdef OSD_COORDINATES  #ifdef OSD_COORDINATES
2011      if (priv->coordinates.surface)      if (priv->coordinates.surface)
2012           cairo_surface_destroy(priv->coordinates.surface);           cairo_surface_destroy(priv->coordinates.surface);
# Line 1706  osd_free(osm_gps_map_osd_t *osd) Line 2018  osd_free(osm_gps_map_osd_t *osd)
2018  #endif  #endif
2019    
2020      g_free(priv);      g_free(priv);
2021        FOUT;
2022  }  }
2023    
2024  static gboolean  static gboolean
2025  osd_busy(osm_gps_map_osd_t *osd)  osd_busy(osm_gps_map_osd_t *osd)
2026  {  {
2027        FIN;
2028  #ifdef OSD_SOURCE_SEL  #ifdef OSD_SOURCE_SEL
2029      osd_priv_t *priv = (osd_priv_t *)(osd->priv);      osd_priv_t *priv = (osd_priv_t *)(osd->priv);
2030      return (priv->source_sel.handler_id != 0);      return (priv->source_sel.handler_id != 0);
# Line 1719  osd_busy(osm_gps_map_osd_t *osd) Line 2033  osd_busy(osm_gps_map_osd_t *osd)
2033  #endif  #endif
2034  }  }
2035    
2036    static osd_button_t
2037    osd_check(osm_gps_map_osd_t *osd, gboolean down, gint x, gint y) {
2038        FIN;
2039        return osd_check_int(osd, TRUE, down, x, y);
2040    }
2041    
2042  static osm_gps_map_osd_t osd_classic = {  static osm_gps_map_osd_t osd_classic = {
2043      .widget     = NULL,      .widget     = NULL,
2044    
# Line 1738  static osm_gps_map_osd_t osd_classic = { Line 2058  static osm_gps_map_osd_t osd_classic = {
2058  void  void
2059  osm_gps_map_osd_classic_init(OsmGpsMap *map)  osm_gps_map_osd_classic_init(OsmGpsMap *map)
2060  {  {
2061        FIN;
2062      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);
2063    
2064  #ifdef OSD_BALLOON  #ifdef OSD_BALLOON
# Line 1748  osm_gps_map_osd_classic_init(OsmGpsMap * Line 2069  osm_gps_map_osd_classic_init(OsmGpsMap *
2069      osd_classic.priv = priv;      osd_classic.priv = priv;
2070    
2071      osm_gps_map_register_osd(map, &osd_classic);      osm_gps_map_register_osd(map, &osd_classic);
2072        FOUT;
2073  }  }
2074    
2075  #ifdef OSD_GPS_BUTTON  #ifdef OSD_GPS_BUTTON
# Line 1755  osm_gps_map_osd_classic_init(OsmGpsMap * Line 2077  osm_gps_map_osd_classic_init(OsmGpsMap *
2077  /* but instead are to be used by the main application */  /* but instead are to be used by the main application */
2078  void osm_gps_map_osd_enable_gps (OsmGpsMap *map, OsmGpsMapOsdCallback cb,  void osm_gps_map_osd_enable_gps (OsmGpsMap *map, OsmGpsMapOsdCallback cb,
2079                                   gpointer data) {                                   gpointer data) {
2080        FIN;
2081      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
2082      g_return_if_fail (osd);      g_return_if_fail (osd);
2083    
# Line 1766  void osm_gps_map_osd_enable_gps (OsmGpsM Line 2089  void osm_gps_map_osd_enable_gps (OsmGpsM
2089      osd->render(osd);      osd->render(osd);
2090    
2091      osm_gps_map_redraw(map);      osm_gps_map_redraw(map);
2092        FOUT;
2093  }  }
2094  #endif  #endif
2095    
2096  osd_button_t  osd_button_t
2097  osm_gps_map_osd_check(OsmGpsMap *map, gint x, gint y) {  osm_gps_map_osd_check(OsmGpsMap *map, gint x, gint y) {
2098        FIN;
2099      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
2100      g_return_val_if_fail (osd, OSD_NONE);      g_return_val_if_fail (osd, OSD_NONE);
2101    
2102      return osd_check(osd, TRUE, x, y);      return osd_check_int(osd, FALSE, TRUE, x, y);
2103  }  }
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  Added in v.147