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

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revision 122 by harbaum, Mon Sep 21 13:15:25 2009 UTC revision 124 by harbaum, Thu Sep 24 14:09:53 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: */
26  /* OSD_DIAMETER */  /* OSD_DIAMETER */
27  /* OSD_X, OSD_Y */  /* OSD_X, OSD_Y */
28    
 #define OSD_NAV  
   
29  #ifndef USE_CAIRO  #ifndef USE_CAIRO
30  #error "OSD control display lacks a non-cairo implementation!"  #error "OSD control display lacks a non-cairo implementation!"
31  #endif  #endif
# Line 81  typedef struct { Line 80  typedef struct {
80  #ifdef OSD_NAV  #ifdef OSD_NAV
81      struct {      struct {
82          cairo_surface_t *surface;          cairo_surface_t *surface;
83            float lat, lon;
84            char *name;
85      } nav;      } nav;
86  #endif  #endif
87    
# Line 1071  osd_zoom_labels(cairo_t *cr, gint x, gin Line 1072  osd_zoom_labels(cairo_t *cr, gint x, gin
1072  #define OSD_COORDINATES_OFFSET (OSD_COORDINATES_FONT_SIZE/6)  #define OSD_COORDINATES_OFFSET (OSD_COORDINATES_FONT_SIZE/6)
1073    
1074  #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)
1075  #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)
1076    
1077  /* these can be overwritten with versions that support */  /* these can be overwritten with versions that support */
1078  /* localization */  /* localization */
# Line 1129  static char Line 1130  static char
1130                             c, (int)integral, fractional*60.0);                             c, (int)integral, fractional*60.0);
1131  }  }
1132    
1133    /* render a string at the given screen position */
1134    static int
1135    osd_render_centered_text(cairo_t *cr, int y, int width, char *text) {
1136        char *p = g_strdup(text);
1137        cairo_text_extents_t extents;
1138        cairo_text_extents (cr, p, &extents);
1139    
1140        /* check if text needs to be truncated */
1141        int len = strlen(text)-2;
1142        while(extents.width > width) {
1143            len--;
1144            strcpy(p+len, "...");
1145            cairo_text_extents (cr, p, &extents);
1146        }
1147    
1148        cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
1149        cairo_set_line_width (cr, OSD_COORDINATES_FONT_SIZE/6);
1150        cairo_move_to (cr, (width - extents.width)/2, y - extents.y_bearing);
1151        cairo_text_path (cr, p);
1152        cairo_stroke (cr);
1153    
1154        cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
1155        cairo_move_to (cr, (width - extents.width)/2, y - extents.y_bearing);
1156        cairo_show_text (cr, p);
1157    
1158        g_free(p);
1159    
1160        /* skip + 1/4 line */
1161        return y + 5*OSD_COORDINATES_FONT_SIZE/4;
1162    }
1163    
1164  static void  static void
1165  osd_render_coordinates(osm_gps_map_osd_t *osd)  osd_render_coordinates(osm_gps_map_osd_t *osd)
1166  {  {
# Line 1164  osd_render_coordinates(osm_gps_map_osd_t Line 1196  osd_render_coordinates(osm_gps_map_osd_t
1196      char *latitude = osd_latitude_str(lat);      char *latitude = osd_latitude_str(lat);
1197      char *longitude = osd_longitude_str(lon);      char *longitude = osd_longitude_str(lon);
1198    
1199      cairo_text_extents_t lat_extents, lon_extents;      int y = OSD_COORDINATES_OFFSET;
1200      cairo_text_extents (cr, latitude, &lat_extents);      y = osd_render_centered_text(cr, y, OSD_COORDINATES_W, latitude);
1201      cairo_text_extents (cr, longitude, &lon_extents);      y = osd_render_centered_text(cr, y, OSD_COORDINATES_W, longitude);
1202    
     cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);  
     cairo_set_line_width (cr, OSD_COORDINATES_FONT_SIZE/6);  
     cairo_move_to (cr,  
                    (OSD_COORDINATES_W - lat_extents.width)/2,  
                    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);  
   
     cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);  
     cairo_move_to (cr,  
                    (OSD_COORDINATES_W - lat_extents.width)/2,  
                    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);  
   
1203      g_free(latitude);      g_free(latitude);
1204      g_free(longitude);      g_free(longitude);
1205    
# Line 1200  osd_render_coordinates(osm_gps_map_osd_t Line 1208  osd_render_coordinates(osm_gps_map_osd_t
1208  #endif  // OSD_COORDINATES  #endif  // OSD_COORDINATES
1209    
1210  #ifdef OSD_NAV  #ifdef OSD_NAV
1211  #define OSD_NAV_W  (100)  #define OSD_NAV_W  (8*OSD_COORDINATES_FONT_SIZE+2*OSD_COORDINATES_OFFSET)
1212  #define OSD_NAV_H  (100)  #define OSD_NAV_H  (100)
1213    
1214  static void  static void
# Line 1208  osd_render_nav(osm_gps_map_osd_t *osd) Line 1216  osd_render_nav(osm_gps_map_osd_t *osd)
1216  {  {
1217      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
1218    
1219        if(!priv->nav.surface || isnan(priv->nav.lat) || isnan(priv->nav.lon))
1220            return;
1221    
1222      /* first fill with transparency */      /* first fill with transparency */
1223      cairo_t *cr = cairo_create(priv->nav.surface);      cairo_t *cr = cairo_create(priv->nav.surface);
1224      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
# Line 1215  osd_render_nav(osm_gps_map_osd_t *osd) Line 1226  osd_render_nav(osm_gps_map_osd_t *osd)
1226      cairo_paint(cr);      cairo_paint(cr);
1227      cairo_set_operator(cr, CAIRO_OPERATOR_OVER);      cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1228    
1229        cairo_select_font_face (cr, "Sans",
1230                                CAIRO_FONT_SLANT_NORMAL,
1231                                CAIRO_FONT_WEIGHT_BOLD);
1232        cairo_set_font_size (cr, OSD_COORDINATES_FONT_SIZE);
1233    
1234        char *latitude = osd_latitude_str(priv->nav.lat);
1235        char *longitude = osd_longitude_str(priv->nav.lon);
1236    
1237        int y = OSD_COORDINATES_OFFSET;
1238        y = osd_render_centered_text(cr, y, OSD_NAV_W, priv->nav.name);
1239        y = osd_render_centered_text(cr, y, OSD_NAV_W, latitude);
1240        y = osd_render_centered_text(cr, y, OSD_NAV_W, longitude);
1241    
1242        g_free(latitude);
1243        g_free(longitude);
1244    
1245      cairo_destroy(cr);      cairo_destroy(cr);
1246  }  }
1247    
1248    void osm_gps_map_osd_clear_nav (OsmGpsMap *map) {
1249        g_return_if_fail (OSM_IS_GPS_MAP (map));
1250    
1251        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
1252        g_return_if_fail (osd);
1253    
1254        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1255        g_return_if_fail (priv);
1256    
1257        if(priv->nav.surface) {
1258            cairo_surface_destroy(priv->nav.surface);
1259            priv->nav.surface = NULL;
1260            priv->nav.lat = OSM_GPS_MAP_INVALID;
1261            priv->nav.lon = OSM_GPS_MAP_INVALID;
1262            if(priv->nav.name) g_free(priv->nav.name);
1263        }
1264        osm_gps_map_redraw(map);
1265    }
1266    
1267    void
1268    osm_gps_map_osd_draw_nav (OsmGpsMap *map, float latitude, float longitude,
1269                              char *name) {
1270        g_return_if_fail (OSM_IS_GPS_MAP (map));
1271    
1272        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
1273        g_return_if_fail (osd);
1274    
1275        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1276        g_return_if_fail (priv);
1277    
1278        osm_gps_map_osd_clear_nav (map);
1279    
1280        /* allocate balloon surface */
1281        priv->nav.surface =
1282            cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1283                                       OSD_NAV_W+2, OSD_NAV_H+2);
1284    
1285        priv->nav.lat = latitude;
1286        priv->nav.lon = longitude;
1287        priv->nav.name = g_strdup(name);
1288    
1289        osd_render_nav(osd);
1290    
1291        osm_gps_map_redraw(map);
1292    }
1293    
1294  #endif // OSD_NAV  #endif // OSD_NAV
1295    
1296    
# Line 1596  osd_draw(osm_gps_map_osd_t *osd, GdkDraw Line 1669  osd_draw(osm_gps_map_osd_t *osd, GdkDraw
1669          priv->crosshair.rendered = FALSE;          priv->crosshair.rendered = FALSE;
1670  #endif  #endif
1671    
 #ifdef OSD_NAV  
         priv->nav.surface =  
             cairo_image_surface_create(CAIRO_FORMAT_ARGB32,  
                                        OSD_NAV_W, OSD_NAV_H);  
 #endif  
   
1672  #ifdef OSD_COORDINATES  #ifdef OSD_COORDINATES
1673          priv->coordinates.surface =          priv->coordinates.surface =
1674              cairo_image_surface_create(CAIRO_FORMAT_ARGB32,              cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
# Line 1638  osd_draw(osm_gps_map_osd_t *osd, GdkDraw Line 1705  osd_draw(osm_gps_map_osd_t *osd, GdkDraw
1705  #endif  #endif
1706    
1707  #ifdef OSD_NAV  #ifdef OSD_NAV
1708      x =  OSD_X;      if(priv->nav.surface) {
1709      if(x < 0) x += osd->widget->allocation.width - OSD_NAV_W;          x =  OSD_X;
1710      y = (osd->widget->allocation.height - OSD_NAV_H)/2;          if(x < 0) x += osd->widget->allocation.width - OSD_NAV_W;
1711            y = (osd->widget->allocation.height - OSD_NAV_H)/2;
1712      cairo_set_source_surface(cr, priv->nav.surface, x, y);  
1713      cairo_paint(cr);          cairo_set_source_surface(cr, priv->nav.surface, x, y);
1714            cairo_paint(cr);
1715        }
1716  #endif  #endif
1717    
1718  #ifdef OSD_COORDINATES  #ifdef OSD_COORDINATES
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