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

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revision 113 by harbaum, Wed Sep 16 13:45:10 2009 UTC revision 144 by harbaum, Tue Oct 27 08:38:31 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 52  typedef struct { Line 53  typedef struct {
53          cairo_surface_t *surface;          cairo_surface_t *surface;
54          int orientation, offset_x, offset_y;          int orientation, offset_x, offset_y;
55    
56            gboolean just_created;
57          float lat, lon;          float lat, lon;
58          OsmGpsMapRect_t rect;          OsmGpsMapRect_t rect;
59    
# Line 75  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 124  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 131  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 159  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 255  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, 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 287  osd_balloon_check(osm_gps_map_osd_t *osd Line 316  osd_balloon_check(osm_gps_map_osd_t *osd
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    
319      return (priv->balloon.surface &&      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        /* is this a real click or is the application just checking for something? */
324        if(click) {
325    
326            /* handle the fact that the balloon may have been created by the */
327            /* 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;
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 301  void osm_gps_map_osd_clear_balloon (OsmG Line 367  void osm_gps_map_osd_clear_balloon (OsmG
367      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
368      g_return_if_fail (priv);      g_return_if_fail (priv);
369    
     printf("request to clear balloon\n");  
   
370      if(priv->balloon.surface) {      if(priv->balloon.surface) {
371          cairo_surface_destroy(priv->balloon.surface);          cairo_surface_destroy(priv->balloon.surface);
372          priv->balloon.surface = NULL;          priv->balloon.surface = NULL;
# Line 310  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 325  osm_gps_map_osd_draw_balloon (OsmGpsMap Line 391  osm_gps_map_osd_draw_balloon (OsmGpsMap
391    
392      osm_gps_map_osd_clear_balloon (map);      osm_gps_map_osd_clear_balloon (map);
393    
     printf("request to draw balloon at %f %f\n", latitude, longitude);  
   
394      /* allocate balloon surface */      /* allocate balloon surface */
395      priv->balloon.surface =      priv->balloon.surface =
396          cairo_image_surface_create(CAIRO_FORMAT_ARGB32,          cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
# Line 336  osm_gps_map_osd_draw_balloon (OsmGpsMap Line 400  osm_gps_map_osd_draw_balloon (OsmGpsMap
400      priv->balloon.lon = longitude;      priv->balloon.lon = longitude;
401      priv->balloon.cb = cb;      priv->balloon.cb = cb;
402      priv->balloon.data = data;      priv->balloon.data = data;
403        priv->balloon.just_created = TRUE;
404    
405      priv->balloon.orientation = -1;      priv->balloon.orientation = -1;
406    
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 486  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 684  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 730  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 776  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 820  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 827  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 852  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, 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 874  osd_source_check(osm_gps_map_osd_t *osd, Line 951  osd_source_check(osm_gps_map_osd_t *osd,
951          /* really within puller shape? */          /* really within puller shape? */
952          if(x > Z_RAD || osm_gps_map_in_circle(x, y, Z_RAD, Z_RAD, Z_RAD)) {          if(x > Z_RAD || osm_gps_map_in_circle(x, y, Z_RAD, Z_RAD, Z_RAD)) {
953              /* expand source selector */              /* expand source selector */
954              osd_source_toggle(osd);              if(down)
955                    osd_source_toggle(osd);
956    
957              /* tell upper layers that user clicked some background element */              /* tell upper layers that user clicked some background element */
958              /* of the OSD */              /* of the OSD */
# Line 900  osd_source_check(osm_gps_map_osd_t *osd, Line 978  osd_source_check(osm_gps_map_osd_t *osd,
978              y /= step;              y /= step;
979              y += 1;              y += 1;
980    
981              gint old = 0;              if(down) {
982              g_object_get(osd->widget, "map-source", &old, NULL);                  gint old = 0;
983                    g_object_get(osd->widget, "map-source", &old, NULL);
984              if(y > OSM_GPS_MAP_SOURCE_NULL &&  
985                 y <= OSM_GPS_MAP_SOURCE_LAST &&                  if(y > OSM_GPS_MAP_SOURCE_NULL &&
986                 old != y) {                     y <= OSM_GPS_MAP_SOURCE_LAST &&
987                  g_object_set(osd->widget, "map-source", y, NULL);                     old != y) {
988                        g_object_set(osd->widget, "map-source", y, NULL);
989                  osd_render_source_sel(osd, TRUE);  
990                  osm_gps_map_repaint(OSM_GPS_MAP(osd->widget));                      osd_render_source_sel(osd, TRUE);
991                        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, 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
1012      /* check if user clicked into balloon */      if(down) {
1013      if(osd_balloon_check(osd, x, y))          /* needed to handle balloons that are created at click */
1014          return OSD_BG;          osd_priv_t *priv = (osd_priv_t*)osd->priv;
1015            priv->balloon.just_created = FALSE;
1016        }
1017  #endif  #endif
1018    
1019  #ifdef OSD_SOURCE_SEL  #ifdef OSD_SOURCE_SEL
1020      /* the source selection area is handles internally */      /* the source selection area is handles internally */
1021      but = osd_source_check(osd, x, y);      but = osd_source_check(osd, down, x, y);
     if(but != OSD_NONE)  
         return but;  
1022  #endif  #endif
1023    
1024      x -= OSD_X;      if(but == OSD_NONE) {
1025      y -= OSD_Y;          gint mx = x - OSD_X;
1026            gint my = y - OSD_Y;
1027      if(OSD_X < 0)  
1028          x -= (osd->widget->allocation.width - OSD_W);          if(OSD_X < 0)
1029                mx -= (osd->widget->allocation.width - OSD_W);
1030      if(OSD_Y < 0)  
1031          y -= (osd->widget->allocation.height - OSD_H);          if(OSD_Y < 0)
1032                my -= (osd->widget->allocation.height - OSD_H);
1033      /* first do a rough test for the OSD area. */  
1034      /* this is just to avoid an unnecessary detailed test */          /* first do a rough test for the OSD area. */
1035      if(x > 0 && x < OSD_W && y > 0 && y < OSD_H) {          /* this is just to avoid an unnecessary detailed test */
1036            if(mx > 0 && mx < OSD_W && my > 0 && my < OSD_H) {
1037  #ifndef OSD_NO_DPAD  #ifndef OSD_NO_DPAD
1038          but = osd_check_dpad(x, y);              but = osd_check_dpad(mx, my);
1039  #endif  #endif
1040            }
1041    
1042          if(but == OSD_NONE)          if(but == OSD_NONE)
1043              but = osd_check_zoom(x, y);              but = osd_check_zoom(mx, my);
1044      }      }
1045    
1046    #ifdef OSD_BALLOON
1047        if(but == OSD_NONE) {
1048            /* check if user clicked into balloon */
1049            if(osd_balloon_check(osd, click, down, x, y))
1050                but = OSD_BG;
1051        }
1052    #endif
1053    
1054        FOUT;
1055      return but;      return but;
1056  }  }
1057    
# Line 1041  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 1099  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        printf("getting extents for \"%s\"\n", p);  // XXX
1211        cairo_text_extents (cr, p, &extents);
1212        printf("initial extents.width = %d\n", extents.width);  // XXX
1213    
1214        /* check if text needs to be truncated */
1215        int trunc_at = strlen(text)-1;
1216        while(extents.width > width) {
1217            g_assert(trunc_at > 0);
1218    
1219            printf("trunc at %d\n", trunc_at);  // XXX
1220            printf("extents.width = %d > %d\n", extents.width, width);  // XXX
1221    
1222            trunc_at--;
1223            strcpy(p+trunc_at, "...");
1224            printf("getting extents for \"%s\"\n", p);  // XXX
1225            cairo_text_extents (cr, p, &extents);
1226        }
1227    
1228        printf("painting\n"); // XXX
1229    
1230        cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
1231        cairo_set_line_width (cr, OSD_COORDINATES_FONT_SIZE/6);
1232        cairo_move_to (cr, (width - extents.width)/2, y - extents.y_bearing);
1233        cairo_text_path (cr, p);
1234        cairo_stroke (cr);
1235    
1236        cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
1237        cairo_move_to (cr, (width - extents.width)/2, y - extents.y_bearing);
1238        cairo_show_text (cr, p);
1239    
1240        g_free(p);
1241    
1242        /* skip + 1/5 line */
1243        FOUT;
1244        return y + 6*OSD_COORDINATES_FONT_SIZE/5;
1245    }
1246    
1247  static void  static void
1248  osd_render_coordinates(osm_gps_map_osd_t *osd)  osd_render_coordinates(osm_gps_map_osd_t *osd)
1249  {  {
1250        FIN;
1251      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
1252    
1253      /* get current map position */      /* get current map position */
# Line 1134  osd_render_coordinates(osm_gps_map_osd_t Line 1280  osd_render_coordinates(osm_gps_map_osd_t
1280      char *latitude = osd_latitude_str(lat);      char *latitude = osd_latitude_str(lat);
1281      char *longitude = osd_longitude_str(lon);      char *longitude = osd_longitude_str(lon);
1282    
1283      cairo_text_extents_t lat_extents, lon_extents;      int y = OSD_COORDINATES_OFFSET;
1284      cairo_text_extents (cr, latitude, &lat_extents);      y = osd_render_centered_text(cr, y, OSD_COORDINATES_W, latitude);
1285      cairo_text_extents (cr, longitude, &lon_extents);      y = osd_render_centered_text(cr, y, OSD_COORDINATES_W, longitude);
1286    
1287        g_free(latitude);
1288        g_free(longitude);
1289    
1290      cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);      cairo_destroy(cr);
1291      cairo_set_line_width (cr, OSD_COORDINATES_FONT_SIZE/6);      FOUT;
1292      cairo_move_to (cr,  }
1293                     (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);  
1294    
1295      cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);  #ifdef OSD_NAV
1296      cairo_move_to (cr,  #define OSD_NAV_W  (8*OSD_COORDINATES_FONT_SIZE+2*OSD_COORDINATES_OFFSET)
1297                     (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);  
1298    
1299    /* http://mathforum.org/library/drmath/view/55417.html */
1300    static float get_bearing(float lat1, float lon1, float lat2, float lon2) {
1301      return atan2( sin(lon2 - lon1) * cos(lat2),
1302                    cos(lat1) * sin(lat2) -
1303                    sin(lat1) * cos(lat2) * cos(lon2 - lon1));
1304    }
1305    
1306    /* http://mathforum.org/library/drmath/view/51722.html */
1307    static float get_distance(float lat1, float lon1, float lat2, float lon2) {
1308      float aob = acos(cos(lat1) * cos(lat2) * cos(lon2 - lon1) +
1309                       sin(lat1) * sin(lat2));
1310    
1311      //  return(aob * 3959.0);   /* great circle radius in miles */
1312    
1313      return(aob * 6371000.0);     /* great circle radius in meters */
1314    }
1315    
1316    static void
1317    osd_render_nav(osm_gps_map_osd_t *osd)
1318    {
1319        FIN;
1320        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1321    
1322        if(!priv->nav.surface || isnan(priv->nav.lat) || isnan(priv->nav.lon))
1323            return;
1324    
1325        /* first fill with transparency */
1326        cairo_t *cr = cairo_create(priv->nav.surface);
1327        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1328        cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0);
1329        cairo_paint(cr);
1330        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1331    
1332        cairo_select_font_face (cr, "Sans",
1333                                CAIRO_FONT_SLANT_NORMAL,
1334                                CAIRO_FONT_WEIGHT_BOLD);
1335        cairo_set_font_size (cr, OSD_COORDINATES_FONT_SIZE);
1336    
1337        char *latitude = osd_latitude_str(priv->nav.lat);
1338        char *longitude = osd_longitude_str(priv->nav.lon);
1339    
1340        int y = OSD_COORDINATES_OFFSET;
1341        y = osd_render_centered_text(cr, y, OSD_NAV_W, priv->nav.name);
1342        y = osd_render_centered_text(cr, y, OSD_NAV_W, latitude);
1343        y = osd_render_centered_text(cr, y, OSD_NAV_W, longitude);
1344    
1345      g_free(latitude);      g_free(latitude);
1346      g_free(longitude);      g_free(longitude);
1347    
1348        /* draw the compass */
1349        int radius = (OSD_NAV_H - y - 5*OSD_COORDINATES_FONT_SIZE/4)/2;
1350        if(radius > OSD_NAV_W/2)
1351            radius = OSD_NAV_W/2;
1352    
1353        int x = OSD_NAV_W/2+1;
1354        y += radius;
1355    
1356        cairo_stroke (cr);
1357    
1358        /* draw background */
1359        cairo_arc(cr, x, y, radius, 0,  2*M_PI);
1360        cairo_set_source_rgba (cr, 1, 1, 1, 0.5);
1361        cairo_fill_preserve (cr);
1362        cairo_set_source_rgb (cr, 0, 0, 0);
1363        cairo_set_line_width (cr, 1);
1364        cairo_stroke (cr);
1365    
1366        /* draw pointer */
1367    #define ARROW_WIDTH     0.3
1368    #define ARROW_LENGTH    0.7
1369    
1370        coord_t *gps = osm_gps_map_get_gps (OSM_GPS_MAP(osd->widget));
1371        if(gps) {
1372            float arot = get_bearing(gps->rlat, gps->rlon,
1373                         deg2rad(priv->nav.lat), deg2rad(priv->nav.lon));
1374    
1375            cairo_move_to(cr,
1376                          x + radius *  ARROW_LENGTH *  sin(arot),
1377                          y + radius *  ARROW_LENGTH * -cos(arot));
1378    
1379            cairo_line_to(cr,
1380                          x + radius * -ARROW_LENGTH *  sin(arot+ARROW_WIDTH),
1381                          y + radius * -ARROW_LENGTH * -cos(arot+ARROW_WIDTH));
1382    
1383            cairo_line_to(cr,
1384                          x + radius * -0.5 * ARROW_LENGTH *  sin(arot),
1385                          y + radius * -0.5 * ARROW_LENGTH * -cos(arot));
1386    
1387            cairo_line_to(cr,
1388                          x + radius * -ARROW_LENGTH *  sin(arot-ARROW_WIDTH),
1389                          y + radius * -ARROW_LENGTH * -cos(arot-ARROW_WIDTH));
1390    
1391            cairo_close_path(cr);
1392            cairo_set_source_rgb (cr, 0, 0, 0);
1393            cairo_fill (cr);
1394    
1395            y += radius + OSD_COORDINATES_FONT_SIZE/4;
1396    
1397            float dist = get_distance(gps->rlat, gps->rlon,
1398                            deg2rad(priv->nav.lat), deg2rad(priv->nav.lon));
1399    
1400            char *dist_str = NULL;
1401            if(!priv->nav.imperial) {
1402                /* metric is easy ... */
1403                if(dist<1000)
1404                    dist_str = g_strdup_printf("%u m", (int)dist);
1405                else
1406                    dist_str = g_strdup_printf("%.1f km", dist/1000);
1407            } else {
1408                /* and now the hard part: scale for useful imperial values :-( */
1409                /* try to convert to feet, 1ft == 0.3048 m */
1410    
1411                if(dist/(3*0.3048) >= 1760.0)      /* more than 1760 yard? */
1412                    dist_str = g_strdup_printf("%.1f mi", dist/(0.3048*3*1760.0));
1413                else if(dist/0.3048 >= 100)        /* more than 100 feet? */
1414                    dist_str = g_strdup_printf("%.1f yd", dist/(0.3048*3));
1415                else
1416                    dist_str = g_strdup_printf("%.0f ft", dist/0.3048);
1417            }
1418    
1419            y = osd_render_centered_text(cr, y, OSD_NAV_W, dist_str);
1420            g_free(dist_str);
1421        }
1422    
1423      cairo_destroy(cr);      cairo_destroy(cr);
1424        FOUT;
1425  }  }
1426  #endif  // OSD_COORDINATES  
1427    void osm_gps_map_osd_clear_nav (OsmGpsMap *map) {
1428        FIN;
1429        g_return_if_fail (OSM_IS_GPS_MAP (map));
1430    
1431        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
1432        g_return_if_fail (osd);
1433    
1434        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1435        g_return_if_fail (priv);
1436    
1437        if(priv->nav.surface) {
1438            cairo_surface_destroy(priv->nav.surface);
1439            priv->nav.surface = NULL;
1440            priv->nav.lat = OSM_GPS_MAP_INVALID;
1441            priv->nav.lon = OSM_GPS_MAP_INVALID;
1442            if(priv->nav.name) g_free(priv->nav.name);
1443        }
1444        osm_gps_map_redraw(map);
1445        FOUT;
1446    }
1447    
1448    void
1449    osm_gps_map_osd_draw_nav (OsmGpsMap *map, gboolean imperial,
1450                              float latitude, float longitude, char *name) {
1451        FIN;
1452        g_return_if_fail (OSM_IS_GPS_MAP (map));
1453    
1454        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
1455        g_return_if_fail (osd);
1456    
1457        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1458        g_return_if_fail (priv);
1459    
1460        osm_gps_map_osd_clear_nav (map);
1461    
1462        /* allocate balloon surface */
1463        priv->nav.surface =
1464            cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1465                                       OSD_NAV_W+2, OSD_NAV_H+2);
1466    
1467        priv->nav.lat = latitude;
1468        priv->nav.lon = longitude;
1469        priv->nav.name = g_strdup(name);
1470        priv->nav.imperial = imperial;
1471    
1472        osd_render_nav(osd);
1473    
1474        osm_gps_map_redraw(map);
1475        FOUT;
1476    }
1477    
1478    #endif // OSD_NAV
1479    
1480    
1481  #ifdef OSD_CROSSHAIR  #ifdef OSD_CROSSHAIR
1482    
# Line 1182  osd_render_coordinates(osm_gps_map_osd_t Line 1491  osd_render_coordinates(osm_gps_map_osd_t
1491    
1492  static void  static void
1493  osd_render_crosshair_shape(cairo_t *cr) {  osd_render_crosshair_shape(cairo_t *cr) {
1494        FIN;
1495      cairo_arc (cr, OSD_CROSSHAIR_W/2, OSD_CROSSHAIR_H/2,      cairo_arc (cr, OSD_CROSSHAIR_W/2, OSD_CROSSHAIR_H/2,
1496                 OSD_CROSSHAIR_RADIUS, 0,  2*M_PI);                 OSD_CROSSHAIR_RADIUS, 0,  2*M_PI);
1497    
# Line 1200  osd_render_crosshair_shape(cairo_t *cr) Line 1510  osd_render_crosshair_shape(cairo_t *cr)
1510      cairo_rel_line_to (cr, 0, OSD_CROSSHAIR_TICK);      cairo_rel_line_to (cr, 0, OSD_CROSSHAIR_TICK);
1511    
1512      cairo_stroke (cr);      cairo_stroke (cr);
1513        FOUT;
1514  }  }
1515    
1516  static void  static void
1517  osd_render_crosshair(osm_gps_map_osd_t *osd)  osd_render_crosshair(osm_gps_map_osd_t *osd)
1518  {  {
1519        FIN;
1520      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
1521    
1522      if(priv->crosshair.rendered)      if(priv->crosshair.rendered)
# Line 1230  osd_render_crosshair(osm_gps_map_osd_t * Line 1542  osd_render_crosshair(osm_gps_map_osd_t *
1542      osd_render_crosshair_shape(cr);      osd_render_crosshair_shape(cr);
1543    
1544      cairo_destroy(cr);      cairo_destroy(cr);
1545        FOUT;
1546  }  }
1547  #endif  #endif
1548    
# Line 1251  osd_render_crosshair(osm_gps_map_osd_t * Line 1564  osd_render_crosshair(osm_gps_map_osd_t *
1564  static void  static void
1565  osd_render_scale(osm_gps_map_osd_t *osd)  osd_render_scale(osm_gps_map_osd_t *osd)
1566  {  {
1567        FIN;
1568      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
1569    
1570      /* this only needs to be rendered if the zoom has changed */      /* this only needs to be rendered if the zoom has changed */
# Line 1374  osd_render_scale(osm_gps_map_osd_t *osd) Line 1688  osd_render_scale(osm_gps_map_osd_t *osd)
1688      cairo_stroke(cr);      cairo_stroke(cr);
1689    
1690      cairo_destroy(cr);      cairo_destroy(cr);
1691        FOUT;
1692  }  }
1693  #endif  #endif
1694    
1695  static void  static void
1696  osd_render_controls(osm_gps_map_osd_t *osd)  osd_render_controls(osm_gps_map_osd_t *osd)
1697  {  {
1698        FIN;
1699      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
1700    
1701      if(priv->controls.rendered      if(priv->controls.rendered
# Line 1496  osd_render(osm_gps_map_osd_t *osd) Line 1812  osd_render(osm_gps_map_osd_t *osd)
1812      osd_render_crosshair(osd);      osd_render_crosshair(osd);
1813  #endif  #endif
1814    
1815    #ifdef OSD_NAV
1816        osd_render_nav(osd);
1817    #endif
1818    
1819  #ifdef OSD_COORDINATES  #ifdef OSD_COORDINATES
1820      osd_render_coordinates(osd);      osd_render_coordinates(osd);
1821  #endif  #endif
# Line 1575  osd_draw(osm_gps_map_osd_t *osd, GdkDraw Line 1895  osd_draw(osm_gps_map_osd_t *osd, GdkDraw
1895      cairo_paint(cr);      cairo_paint(cr);
1896  #endif  #endif
1897    
1898    #ifdef OSD_NAV
1899        if(priv->nav.surface) {
1900            x =  OSD_X;
1901            if(x < 0) x += osd->widget->allocation.width - OSD_NAV_W;
1902            y = (osd->widget->allocation.height - OSD_NAV_H)/2;
1903    
1904            cairo_set_source_surface(cr, priv->nav.surface, x, y);
1905            cairo_paint(cr);
1906        }
1907    #endif
1908    
1909  #ifdef OSD_COORDINATES  #ifdef OSD_COORDINATES
1910      x = -OSD_X;      x = -OSD_X;
1911      y = -OSD_Y;      y = -OSD_Y;
# Line 1638  osd_draw(osm_gps_map_osd_t *osd, GdkDraw Line 1969  osd_draw(osm_gps_map_osd_t *osd, GdkDraw
1969  #endif  #endif
1970    
1971      cairo_destroy(cr);      cairo_destroy(cr);
1972        FOUT;
1973  }  }
1974    
1975  static void  static void
1976  osd_free(osm_gps_map_osd_t *osd)  osd_free(osm_gps_map_osd_t *osd)
1977  {  {
1978        FIN;
1979      osd_priv_t *priv = (osd_priv_t *)(osd->priv);      osd_priv_t *priv = (osd_priv_t *)(osd->priv);
1980    
1981      if (priv->controls.surface)      if (priv->controls.surface)
# Line 1666  osd_free(osm_gps_map_osd_t *osd) Line 1999  osd_free(osm_gps_map_osd_t *osd)
1999           cairo_surface_destroy(priv->crosshair.surface);           cairo_surface_destroy(priv->crosshair.surface);
2000  #endif  #endif
2001    
2002    #ifdef OSD_NAV
2003        if (priv->nav.surface)
2004             cairo_surface_destroy(priv->nav.surface);
2005    #endif
2006    
2007  #ifdef OSD_COORDINATES  #ifdef OSD_COORDINATES
2008      if (priv->coordinates.surface)      if (priv->coordinates.surface)
2009           cairo_surface_destroy(priv->coordinates.surface);           cairo_surface_destroy(priv->coordinates.surface);
# Line 1677  osd_free(osm_gps_map_osd_t *osd) Line 2015  osd_free(osm_gps_map_osd_t *osd)
2015  #endif  #endif
2016    
2017      g_free(priv);      g_free(priv);
2018        FOUT;
2019  }  }
2020    
2021  static gboolean  static gboolean
2022  osd_busy(osm_gps_map_osd_t *osd)  osd_busy(osm_gps_map_osd_t *osd)
2023  {  {
2024        FIN;
2025  #ifdef OSD_SOURCE_SEL  #ifdef OSD_SOURCE_SEL
2026      osd_priv_t *priv = (osd_priv_t *)(osd->priv);      osd_priv_t *priv = (osd_priv_t *)(osd->priv);
2027      return (priv->source_sel.handler_id != 0);      return (priv->source_sel.handler_id != 0);
# Line 1690  osd_busy(osm_gps_map_osd_t *osd) Line 2030  osd_busy(osm_gps_map_osd_t *osd)
2030  #endif  #endif
2031  }  }
2032    
2033    static osd_button_t
2034    osd_check(osm_gps_map_osd_t *osd, gboolean down, gint x, gint y) {
2035        FIN;
2036        return osd_check_int(osd, TRUE, down, x, y);
2037    }
2038    
2039  static osm_gps_map_osd_t osd_classic = {  static osm_gps_map_osd_t osd_classic = {
2040      .widget     = NULL,      .widget     = NULL,
2041    
# Line 1709  static osm_gps_map_osd_t osd_classic = { Line 2055  static osm_gps_map_osd_t osd_classic = {
2055  void  void
2056  osm_gps_map_osd_classic_init(OsmGpsMap *map)  osm_gps_map_osd_classic_init(OsmGpsMap *map)
2057  {  {
2058        FIN;
2059      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);
2060    
2061  #ifdef OSD_BALLOON  #ifdef OSD_BALLOON
# Line 1719  osm_gps_map_osd_classic_init(OsmGpsMap * Line 2066  osm_gps_map_osd_classic_init(OsmGpsMap *
2066      osd_classic.priv = priv;      osd_classic.priv = priv;
2067    
2068      osm_gps_map_register_osd(map, &osd_classic);      osm_gps_map_register_osd(map, &osd_classic);
2069        FOUT;
2070  }  }
2071    
2072  #ifdef OSD_GPS_BUTTON  #ifdef OSD_GPS_BUTTON
# Line 1726  osm_gps_map_osd_classic_init(OsmGpsMap * Line 2074  osm_gps_map_osd_classic_init(OsmGpsMap *
2074  /* but instead are to be used by the main application */  /* but instead are to be used by the main application */
2075  void osm_gps_map_osd_enable_gps (OsmGpsMap *map, OsmGpsMapOsdCallback cb,  void osm_gps_map_osd_enable_gps (OsmGpsMap *map, OsmGpsMapOsdCallback cb,
2076                                   gpointer data) {                                   gpointer data) {
2077        FIN;
2078      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
2079      g_return_if_fail (osd);      g_return_if_fail (osd);
2080    
# Line 1737  void osm_gps_map_osd_enable_gps (OsmGpsM Line 2086  void osm_gps_map_osd_enable_gps (OsmGpsM
2086      osd->render(osd);      osd->render(osd);
2087    
2088      osm_gps_map_redraw(map);      osm_gps_map_redraw(map);
2089        FOUT;
2090  }  }
2091  #endif  #endif
2092    
2093  osd_button_t  osd_button_t
2094  osm_gps_map_osd_check(OsmGpsMap *map, gint x, gint y) {  osm_gps_map_osd_check(OsmGpsMap *map, gint x, gint y) {
2095        FIN;
2096      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
2097      g_return_val_if_fail (osd, OSD_NONE);      g_return_val_if_fail (osd, OSD_NONE);
2098    
2099      return osd_check(osd, x, y);      return osd_check_int(osd, FALSE, TRUE, x, y);
2100  }  }
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