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

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revision 55 by harbaum, Thu Aug 13 12:01:52 2009 UTC revision 69 by harbaum, Thu Aug 20 18:54:06 2009 UTC
# Line 98  struct _OsmGpsMapPrivate Line 98  struct _OsmGpsMapPrivate
98      coord_t *gps;      coord_t *gps;
99      gboolean gps_valid;      gboolean gps_valid;
100    
101    #ifdef ENABLE_BALLOON
102        //a balloon with additional info
103        struct {
104            coord_t *coo;
105            gboolean valid;
106            OsmGpsMapRect_t rect;
107            OsmGpsMapBalloonCallback cb;
108            gpointer data;
109        } balloon;
110    #endif
111    
112    #ifdef ENABLE_OSD
113        //the osd controls
114        struct {
115            GdkPixmap *backup;
116            cairo_surface_t *overlay;
117            gint backup_x, backup_y;
118            OsmGpsMapOsdGpsCallback cb;
119            gpointer data;
120        } osd;
121    #endif
122    
123      //additional images or tracks added to the map      //additional images or tracks added to the map
124      GSList *tracks;      GSList *tracks;
125      GSList *images;      GSList *images;
# Line 631  osm_gps_map_draw_gps_point (OsmGpsMap *m Line 653  osm_gps_map_draw_gps_point (OsmGpsMap *m
653                                      (mr*2)+lw+lw);                                      (mr*2)+lw+lw);
654  #endif  #endif
655      }      }
656    }
657    
658    #ifdef ENABLE_BALLOON
659    /* most visual effects are hardcoded by now, but may be made */
660    /* available via properties later */
661    #ifndef BALLOON_AREA_WIDTH
662    #define BALLOON_AREA_WIDTH           290
663    #endif
664    #ifndef BALLOON_AREA_HEIGHT
665    #define BALLOON_AREA_HEIGHT           75
666    #endif
667    #ifndef BALLOON_CORNER_RADIUS
668    #define BALLOON_CORNER_RADIUS         10
669    #endif
670    
671    #define BALLOON_BORDER               (BALLOON_CORNER_RADIUS/2)
672    #define BALLOON_WIDTH                (BALLOON_AREA_WIDTH + 2 * BALLOON_BORDER)
673    #define BALLOON_HEIGHT               (BALLOON_AREA_HEIGHT + 2 * BALLOON_BORDER)
674    #define BALLOON_TRANSPARENCY         0.8
675    #define POINTER_HEIGHT                20
676    #define POINTER_FOOT_WIDTH            20
677    #define POINTER_OFFSET               (BALLOON_CORNER_RADIUS*3/4)
678    #define BALLOON_SHADOW               (BALLOON_CORNER_RADIUS/2)
679    #define BALLOON_SHADOW_TRANSPARENCY  0.2
680    
681    #define CLOSE_BUTTON_RADIUS   (BALLOON_CORNER_RADIUS)
682    
683    
684    /* draw the bubble shape. this is used twice, once for the shape and once */
685    /* for the shadow */
686    static void
687    osm_gps_map_draw_balloon_shape (cairo_t *cr, int x0, int y0, int x1, int y1,
688           gboolean bottom, int px, int py, int px0, int px1) {
689    
690        cairo_move_to (cr, x0, y0 + BALLOON_CORNER_RADIUS);
691        cairo_arc (cr, x0 + BALLOON_CORNER_RADIUS, y0 + BALLOON_CORNER_RADIUS,
692                   BALLOON_CORNER_RADIUS, -M_PI, -M_PI/2);
693        if(!bottom) {
694            /* insert top pointer */
695            cairo_line_to (cr, px1, y0);
696            cairo_line_to (cr, px, py);
697            cairo_line_to (cr, px0, y0);
698        }
699    
700        cairo_line_to (cr, x1 - BALLOON_CORNER_RADIUS, y0);
701        cairo_arc (cr, x1 - BALLOON_CORNER_RADIUS, y0 + BALLOON_CORNER_RADIUS,
702                   BALLOON_CORNER_RADIUS, -M_PI/2, 0);
703        cairo_line_to (cr, x1 , y1 - BALLOON_CORNER_RADIUS);
704        cairo_arc (cr, x1 - BALLOON_CORNER_RADIUS, y1 - BALLOON_CORNER_RADIUS,
705                   BALLOON_CORNER_RADIUS, 0, M_PI/2);
706        if(bottom) {
707            /* insert bottom pointer */
708            cairo_line_to (cr, px0, y1);
709            cairo_line_to (cr, px, py);
710            cairo_line_to (cr, px1, y1);
711        }
712    
713        cairo_line_to (cr, x0 + BALLOON_CORNER_RADIUS, y1);
714        cairo_arc (cr, x0 + BALLOON_CORNER_RADIUS, y1 - BALLOON_CORNER_RADIUS,
715                   BALLOON_CORNER_RADIUS, M_PI/2, M_PI);
716    
717        cairo_close_path (cr);
718    }
719    
720    static void
721    osm_gps_map_draw_balloon_int (OsmGpsMap *map)
722    {
723        OsmGpsMapPrivate *priv = map->priv;
724    
725        if (priv->balloon.valid) {
726    
727            /* ------- convert given coordinate into screen position --------- */
728            int x0 = lon2pixel(priv->map_zoom, priv->balloon.coo->rlon) -
729                priv->map_x + EXTRA_BORDER;
730            int y0 = lat2pixel(priv->map_zoom, priv->balloon.coo->rlat) -
731                priv->map_y + EXTRA_BORDER;
732    
733            /* check position of this relative to screen center to determine */
734            /* pointer direction ... */
735            int pointer_x = x0, pointer_x0, pointer_x1;
736            int pointer_y = y0;
737    
738            /* ... and calculate position */
739            if((x0 - EXTRA_BORDER) > GTK_WIDGET(map)->allocation.width/2) {
740                x0 -= BALLOON_WIDTH - POINTER_OFFSET;
741                pointer_x0 = pointer_x - (BALLOON_CORNER_RADIUS - POINTER_OFFSET);
742                pointer_x1 = pointer_x0 - POINTER_FOOT_WIDTH;
743            } else {
744                x0 -= POINTER_OFFSET;
745                pointer_x1 = pointer_x + (BALLOON_CORNER_RADIUS - POINTER_OFFSET);
746                pointer_x0 = pointer_x1 + POINTER_FOOT_WIDTH;
747            }
748    
749            gboolean bottom = FALSE;
750            if((y0 - EXTRA_BORDER) > GTK_WIDGET(map)->allocation.height/2) {
751                bottom = TRUE;
752                y0 -= BALLOON_HEIGHT + POINTER_HEIGHT;
753            } else
754                y0 += POINTER_HEIGHT;
755    
756            /* calculate bottom/right of box */
757            int x1 = x0 + BALLOON_WIDTH, y1 = y0 + BALLOON_HEIGHT;
758    
759            /* save balloon screen coordinates for later use */
760            priv->balloon.rect.x = x0 + BALLOON_BORDER;
761            priv->balloon.rect.y = y0 + BALLOON_BORDER;
762            priv->balloon.rect.w = x1 - x0 - 2*BALLOON_BORDER;
763            priv->balloon.rect.h = y1 - y0 - 2*BALLOON_BORDER;
764    
765    #ifdef USE_CAIRO
766            cairo_t *cr = gdk_cairo_create(priv->pixmap);
767    
768            /* --------- draw shadow --------------- */
769            osm_gps_map_draw_balloon_shape (cr,
770                        x0 + BALLOON_SHADOW, y0 + BALLOON_SHADOW,
771                        x1 + BALLOON_SHADOW, y1 + BALLOON_SHADOW,
772                        bottom, pointer_x, pointer_y,
773                        pointer_x0 + BALLOON_SHADOW, pointer_x1 + BALLOON_SHADOW);
774    
775            cairo_set_source_rgba (cr, 0, 0, 0, BALLOON_SHADOW_TRANSPARENCY);
776            cairo_fill_preserve (cr);
777            cairo_set_source_rgba (cr, 1, 0, 0, 1.0);
778            cairo_set_line_width (cr, 0);
779            cairo_stroke (cr);
780    
781            /* --------- draw main shape ----------- */
782            osm_gps_map_draw_balloon_shape (cr, x0, y0, x1, y1,
783                        bottom, pointer_x, pointer_y, pointer_x0, pointer_x1);
784    
785            cairo_set_source_rgba (cr, 1, 1, 1, BALLOON_TRANSPARENCY);
786            cairo_fill_preserve (cr);
787            cairo_set_source_rgba (cr, 0, 0, 0, BALLOON_TRANSPARENCY);
788            cairo_set_line_width (cr, 1);
789            cairo_stroke (cr);
790    
791    
792            /* ---------- draw close button --------- */
793    
794            int cx = x1 - BALLOON_BORDER - CLOSE_BUTTON_RADIUS;
795            int cy = y0 + BALLOON_BORDER + CLOSE_BUTTON_RADIUS;
796            int crad = CLOSE_BUTTON_RADIUS;
797    
798            cairo_arc (cr, cx, cy, crad, 0, 2 * M_PI);
799            cairo_set_source_rgba (cr, 0.8, 0, 0, 1.0);
800            cairo_fill_preserve (cr);
801            cairo_set_source_rgba (cr, 0.3, 0, 0, 1.0);
802            cairo_set_line_width (cr, 2);
803            cairo_stroke(cr);
804    
805            cairo_set_source_rgba (cr, 1, 1, 1, 1.0);
806            cairo_set_line_width (cr, BALLOON_CORNER_RADIUS/3.3);
807            cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);
808            cairo_move_to (cr, cx - crad/2, cy - crad/2);
809            cairo_line_to (cr, cx + crad/2, cy + crad/2);
810            cairo_stroke (cr);
811            cairo_move_to (cr, cx + crad/2, cy - crad/2);
812            cairo_line_to (cr, cx - crad/2, cy + crad/2);
813            cairo_stroke (cr);
814    
815            if (priv->balloon.cb) {
816                /* clip in case application tries to draw in */
817                /* exceed of the balloon */
818                cairo_rectangle (cr, priv->balloon.rect.x, priv->balloon.rect.y,
819                                 priv->balloon.rect.w, priv->balloon.rect.h);
820                cairo_clip (cr);
821                cairo_new_path (cr);  /* current path is not
822                                         consumed by cairo_clip() */
823    
824                priv->balloon.cb(cr, &priv->balloon.rect, priv->balloon.data);
825            }
826    
827            cairo_destroy(cr);
828    
829            gtk_widget_queue_draw_area (GTK_WIDGET(map),
830                                        x0, y0, BALLOON_WIDTH,
831                                        BALLOON_HEIGHT + POINTER_HEIGHT);
832    #else
833    #warning "Balloon display lacks a non-cairo implementation!"
834    #endif
835        }
836  }  }
837    
838    /* the user clicked into the balloons main area. handle this */
839    static void
840    osm_gps_map_handle_balloon_click(OsmGpsMap *map, gint x, gint y)
841    {
842        OsmGpsMapPrivate *priv = map->priv;
843    
844        if (!priv->balloon.valid)
845            return;
846    
847        /* check if the close button was clicked */
848        if ((x > priv->balloon.rect.w - 2*CLOSE_BUTTON_RADIUS) &&
849            (x < priv->balloon.rect.w) &&
850            (y > 0) && (y < 2*CLOSE_BUTTON_RADIUS)) {
851    
852            priv->balloon.valid = FALSE;
853            osm_gps_map_map_redraw_idle(map);
854        }
855    }
856    
857    /* return true if balloon is being displayed and if */
858    /* the given coordinate is within this balloon */
859    static gboolean
860    osm_gps_map_in_balloon(OsmGpsMapPrivate *priv, gint x, gint y)
861    {
862        return (priv->balloon.valid &&
863                (x > priv->balloon.rect.x) &&
864                (x < priv->balloon.rect.x + priv->balloon.rect.w) &&
865                (y > priv->balloon.rect.y) &&
866                (y < priv->balloon.rect.y + priv->balloon.rect.h));
867    }
868    #endif // ENABLE_BALLOON
869    
870  static void  static void
871  osm_gps_map_blit_tile(OsmGpsMap *map, GdkPixbuf *pixbuf, int offset_x, int offset_y)  osm_gps_map_blit_tile(OsmGpsMap *map, GdkPixbuf *pixbuf, int offset_x, int offset_y)
872  {  {
# Line 695  osm_gps_map_tile_download_complete (Soup Line 929  osm_gps_map_tile_download_complete (Soup
929              }              }
930              else              else
931              {              {
932                  g_warning("Error creating tile download directory: %s", dl->folder);                  g_warning("Error creating tile download directory: %s",
933                              dl->folder);
934                    perror("perror:");
935              }              }
936          }          }
937    
# Line 1187  osm_gps_map_purge_cache (OsmGpsMap *map) Line 1423  osm_gps_map_purge_cache (OsmGpsMap *map)
1423     g_hash_table_foreach_remove(priv->tile_cache, osm_gps_map_purge_cache_check, priv);     g_hash_table_foreach_remove(priv->tile_cache, osm_gps_map_purge_cache_check, priv);
1424  }  }
1425    
1426    #ifdef ENABLE_OSD
1427    /* position and extent of bounding box */
1428    #define OSD_X      (10)
1429    #define OSD_Y      (10)
1430    
1431    #define OSD_COLOR            0.5, 0.5, 1
1432    #define OSD_COLOR_DISABLED   0.8, 0.8, 0.8
1433    
1434    /* parameters of the direction shape */
1435    #ifndef OSM_GPS_MAP_OSD_DIAMETER
1436    #define D_RAD  (30)         // diameter of dpad
1437    #else
1438    #define D_RAD  (OSM_GPS_MAP_OSD_DIAMETER)
1439    #endif
1440    #define D_TIP  (4*D_RAD/5)  // distance of arrow tip from dpad center
1441    #define D_LEN  (D_RAD/4)    // length of arrow
1442    #define D_WID  (D_LEN)      // width of arrow
1443    
1444    /* parameters of the "zoom" pad */
1445    #define Z_STEP   (D_RAD/4)  // distance between dpad and zoom
1446    #define Z_RAD    (D_RAD/2)  // radius of "caps" of zoom bar
1447    
1448    /* shadow also depends on control size */
1449    #define OSD_SHADOW (D_RAD/6)
1450    
1451    /* total width and height of controls incl. shadow */
1452    #define OSD_W    (2*D_RAD + OSD_SHADOW)
1453    #define OSD_H    (2*D_RAD + Z_STEP + 2*Z_RAD + OSD_SHADOW)
1454    
1455    #define OSD_LBL_SHADOW (OSD_SHADOW/2)
1456    
1457    #define Z_TOP    (2 * D_RAD + Z_STEP)
1458    #define Z_MID    (Z_TOP + Z_RAD)
1459    #define Z_BOT    (Z_MID + Z_RAD)
1460    #define Z_LEFT   (Z_RAD)
1461    #define Z_RIGHT  (2 * D_RAD - Z_RAD)
1462    
1463    /* create the cairo shape used for the zoom buttons */
1464    static void
1465    osm_gps_map_osd_zoom_shape(cairo_t *cr, gint x, gint y) {
1466        cairo_move_to (cr, x+Z_LEFT,    y+Z_TOP);
1467        cairo_line_to (cr, x+Z_RIGHT,   y+Z_TOP);
1468        cairo_arc     (cr, x+Z_RIGHT,   y+Z_MID, Z_RAD, -M_PI/2,  M_PI/2);
1469        cairo_line_to (cr, x+Z_LEFT,    y+Z_BOT);
1470        cairo_arc     (cr, x+Z_LEFT,    y+Z_MID, Z_RAD,  M_PI/2, -M_PI/2);
1471    }
1472    
1473    /* create the cairo shape used for the dpad */
1474    static void
1475    osm_gps_map_osd_dpad_shape(cairo_t *cr, gint x, gint y) {
1476        cairo_arc (cr, x+D_RAD, y+D_RAD, D_RAD, 0, 2 * M_PI);
1477    }
1478    
1479    static gboolean
1480    osm_gps_map_in_circle(gint x, gint y, gint cx, gint cy, gint rad)
1481    {
1482        return( pow(cx - x, 2) + pow(cy - y, 2) < rad * rad);
1483    }
1484    
1485    /* check whether x/y is within the dpad */
1486    static osd_button_t
1487    osm_gps_map_osd_check_dpad(gint x, gint y)
1488    {
1489        /* within entire dpad circle */
1490        if( osm_gps_map_in_circle(x, y, OSD_X + D_RAD, OSD_Y + D_RAD, D_RAD))
1491        {
1492            /* convert into position relative to dpads centre */
1493            x -= (OSD_X + D_RAD);
1494            y -= (OSD_Y + D_RAD);
1495    
1496            /* check for dpad center goes here! */
1497            if( osm_gps_map_in_circle(x, y, 0, 0, D_RAD/3))
1498                return OSD_GPS;
1499    
1500            if( y < 0 && abs(x) < abs(y))
1501                return OSD_UP;
1502    
1503            if( y > 0 && abs(x) < abs(y))
1504                return OSD_DOWN;
1505    
1506            if( x < 0 && abs(y) < abs(x))
1507                return OSD_LEFT;
1508    
1509            if( x > 0 && abs(y) < abs(x))
1510                return OSD_RIGHT;
1511    
1512            return OSD_BG;
1513        }
1514        return OSD_NONE;
1515    }
1516    
1517    /* check whether x/y is within the zoom pads */
1518    static osd_button_t
1519    osm_gps_map_osd_check_zoom(gint x, gint y) {
1520        if( x > OSD_X && x < (OSD_X + OSD_W) && y > Z_TOP && y < (OSD_Y+Z_BOT)) {
1521    
1522            /* within circle around (-) label */
1523            if( osm_gps_map_in_circle(x, y, OSD_X + Z_LEFT, OSD_Y + Z_MID, Z_RAD))
1524                return OSD_OUT;
1525    
1526            /* between center of (-) button and center of entire zoom control area */
1527            if(x > OSD_LEFT && x < OSD_X + D_RAD)
1528                return OSD_OUT;
1529    
1530            /* within circle around (+) label */
1531            if( osm_gps_map_in_circle(x, y, OSD_X + Z_RIGHT, OSD_Y + Z_MID, Z_RAD))
1532                return OSD_IN;
1533    
1534            /* between center of (+) button and center of entire zoom control area */
1535            if(x < OSD_RIGHT && x > OSD_X + D_RAD)
1536                return OSD_IN;
1537        }
1538    
1539        return OSD_NONE;
1540    }
1541    
1542    osd_button_t
1543    osm_gps_map_osd_check(gint x, gint y) {
1544        osd_button_t but = OSD_NONE;
1545    
1546        /* first do a rough test for the OSD area. */
1547        /* this is just to avoid an unnecessary detailed test */
1548        if(x > OSD_X && x < OSD_X + OSD_W &&
1549           y > OSD_Y && y < OSD_Y + OSD_H) {
1550            but = osm_gps_map_osd_check_dpad(x, y);
1551    
1552            if(but == OSD_NONE)
1553                but = osm_gps_map_osd_check_zoom(x, y);
1554        }
1555    
1556        return but;
1557    }
1558    
1559    static void
1560    osm_gps_map_osd_shape_shadow(cairo_t *cr) {
1561        cairo_set_source_rgba (cr, 0, 0, 0, 0.2);
1562        cairo_fill (cr);
1563        cairo_stroke (cr);
1564    }
1565    
1566    static void
1567    osm_gps_map_osd_shape(cairo_t *cr) {
1568        cairo_set_source_rgb (cr, 1, 1, 1);
1569        cairo_fill_preserve (cr);
1570        cairo_set_source_rgb (cr, OSD_COLOR);
1571        cairo_set_line_width (cr, 1);
1572        cairo_stroke (cr);
1573    }
1574    
1575    static void
1576    osm_gps_map_osd_dpad_labels(cairo_t *cr, gint x, gint y) {
1577        /* move reference to dpad center */
1578        x += D_RAD;
1579        y += D_RAD;
1580    
1581        const static gint offset[][3][2] = {
1582            /* left arrow/triangle */
1583            { { -D_TIP+D_LEN, -D_WID }, { -D_LEN, D_WID }, { +D_LEN, D_WID } },
1584            /* right arrow/triangle */
1585            { { +D_TIP-D_LEN, -D_WID }, { +D_LEN, D_WID }, { -D_LEN, D_WID } },
1586            /* top arrow/triangle */
1587            { { -D_WID, -D_TIP+D_LEN }, { D_WID, -D_LEN }, { D_WID, +D_LEN } },
1588            /* bottom arrow/triangle */
1589            { { -D_WID, +D_TIP-D_LEN }, { D_WID, +D_LEN }, { D_WID, -D_LEN } }
1590        };
1591    
1592        int i;
1593        for(i=0;i<4;i++) {
1594            cairo_move_to (cr, x + offset[i][0][0], y + offset[i][0][1]);
1595            cairo_rel_line_to (cr, offset[i][1][0], offset[i][1][1]);
1596            cairo_rel_line_to (cr, offset[i][2][0], offset[i][2][1]);
1597        }
1598    }
1599    
1600    /* draw the sattelite dish icon in the center of the dpad */
1601    #define GPS_V0  (D_RAD/8)
1602    #define GPS_V1  (D_RAD/10)
1603    #define GPS_V2  (D_RAD/5)
1604    
1605    /* draw a satellite receiver dish */
1606    static void
1607    osm_gps_map_osd_dpad_gps(cairo_t *cr, gint x, gint y) {
1608        /* move reference to dpad center */
1609        x += D_RAD;
1610        y += D_RAD + GPS_V0;
1611    
1612        cairo_move_to (cr, x-GPS_V0, y+GPS_V0);
1613        cairo_rel_line_to (cr, +GPS_V0, -GPS_V0);
1614        cairo_rel_line_to (cr, +GPS_V0, +GPS_V0);
1615        cairo_close_path (cr);
1616    
1617        cairo_move_to (cr, x+GPS_V1-GPS_V2, y-2*GPS_V2);
1618        cairo_curve_to (cr, x-GPS_V2, y, x+GPS_V1, y+GPS_V1, x+GPS_V1+GPS_V2, y);
1619        cairo_close_path (cr);
1620    
1621        x += GPS_V1;
1622        cairo_move_to (cr, x, y-GPS_V2);
1623        cairo_rel_line_to (cr, +GPS_V1, -GPS_V1);
1624    }
1625    
1626    #define Z_LEN  (2*Z_RAD/3)
1627    
1628    static void
1629    osm_gps_map_osd_zoom_labels(cairo_t *cr, gint x, gint y) {
1630        cairo_move_to (cr, x + Z_LEFT  - Z_LEN, y + Z_MID);
1631        cairo_line_to (cr, x + Z_LEFT  + Z_LEN, y + Z_MID);
1632    
1633        cairo_move_to (cr, x + Z_RIGHT,         y + Z_MID - Z_LEN);
1634        cairo_line_to (cr, x + Z_RIGHT,         y + Z_MID + Z_LEN);
1635        cairo_move_to (cr, x + Z_RIGHT - Z_LEN, y + Z_MID);
1636        cairo_line_to (cr, x + Z_RIGHT + Z_LEN, y + Z_MID);
1637    }
1638    
1639    static void
1640    osm_gps_map_osd_labels(cairo_t *cr, gint width, gboolean enabled) {
1641        if(enabled)  cairo_set_source_rgb (cr, OSD_COLOR);
1642        else         cairo_set_source_rgb (cr, OSD_COLOR_DISABLED);
1643        cairo_set_line_width (cr, width);
1644        cairo_stroke (cr);
1645    }
1646    
1647    static void
1648    osm_gps_map_osd_labels_shadow(cairo_t *cr, gint width, gboolean enabled) {
1649        cairo_set_source_rgba (cr, 0, 0, 0, enabled?0.3:0.15);
1650        cairo_set_line_width (cr, width);
1651        cairo_stroke (cr);
1652    }
1653    
1654    static void
1655    osm_gps_map_osd_render(OsmGpsMapPrivate *priv) {
1656    
1657        /* first fill with transparency */
1658        cairo_t *cr = cairo_create(priv->osd.overlay);
1659        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1660        cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0);
1661        cairo_paint(cr);
1662    
1663        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1664    
1665        /* --------- draw zoom and dpad shape shadow ----------- */
1666        gint x = 0, y = 0;
1667    
1668        osm_gps_map_osd_zoom_shape(cr, x + OSD_SHADOW, y + OSD_SHADOW);
1669        osm_gps_map_osd_shape_shadow(cr);
1670        osm_gps_map_osd_dpad_shape(cr, x + OSD_SHADOW, y + OSD_SHADOW);
1671        osm_gps_map_osd_shape_shadow(cr);
1672    
1673        /* --------- draw zoom and dpad shape ----------- */
1674    
1675        osm_gps_map_osd_zoom_shape(cr, x, y);
1676        osm_gps_map_osd_shape(cr);
1677        osm_gps_map_osd_dpad_shape(cr, x, y);
1678        osm_gps_map_osd_shape(cr);
1679    
1680        /* --------- draw zoom and dpad labels --------- */
1681    
1682        osm_gps_map_osd_zoom_labels(cr, x + OSD_LBL_SHADOW, y + OSD_LBL_SHADOW);
1683        osm_gps_map_osd_dpad_labels(cr, x + OSD_LBL_SHADOW, y + OSD_LBL_SHADOW);
1684        osm_gps_map_osd_labels_shadow(cr, Z_RAD/3, TRUE);
1685        osm_gps_map_osd_dpad_gps(cr, x + OSD_LBL_SHADOW, y + OSD_LBL_SHADOW);
1686        osm_gps_map_osd_labels_shadow(cr, Z_RAD/6, priv->osd.cb != NULL);
1687    
1688        osm_gps_map_osd_zoom_labels(cr, x, y);
1689        osm_gps_map_osd_dpad_labels(cr, x, y);
1690        osm_gps_map_osd_labels(cr, Z_RAD/3, TRUE);
1691        osm_gps_map_osd_dpad_gps(cr, x, y);
1692        osm_gps_map_osd_labels(cr, Z_RAD/6, priv->osd.cb != NULL);
1693    
1694        cairo_destroy(cr);
1695    }
1696    
1697    static void
1698    osm_gps_map_osd_draw_controls (OsmGpsMap *map, gint xoffset, gint yoffset)
1699    {
1700        OsmGpsMapPrivate *priv = map->priv;
1701    
1702        /* backup previous contents */
1703        if(!priv->osd.backup)
1704            priv->osd.backup = gdk_pixmap_new(priv->pixmap, OSD_W+2, OSD_H+2, -1);
1705    
1706        gint x = OSD_X + EXTRA_BORDER + xoffset;
1707        gint y = OSD_Y + EXTRA_BORDER + yoffset;
1708    
1709        /* create backup of background */
1710        gdk_draw_drawable(priv->osd.backup,
1711            GTK_WIDGET(map)->style->fg_gc[GTK_WIDGET_STATE(GTK_WIDGET(map))],
1712                          priv->pixmap, x-1, y-1, 0, 0, OSD_W+2, OSD_H+2);
1713    
1714        priv->osd.backup_x = x-1;
1715        priv->osd.backup_y = y-1;
1716    
1717    
1718    #ifdef USE_CAIRO
1719        /* OSD itself uses some off-screen rendering, so check if the */
1720        /* offscreen buffer is present and create it if not */
1721        if(!priv->osd.overlay) {
1722            /* create overlay ... */
1723            priv->osd.overlay =
1724                cairo_image_surface_create(CAIRO_FORMAT_ARGB32, OSD_W, OSD_H);
1725            /* ... and render it */
1726            osm_gps_map_osd_render(priv);
1727        }
1728    
1729        // now draw this onto the original context
1730        cairo_t *cr = gdk_cairo_create(priv->pixmap);
1731        cairo_set_source_surface(cr, priv->osd.overlay, x, y);
1732        cairo_paint(cr);
1733        cairo_destroy(cr);
1734    
1735    #else
1736    #warning "OSD control display lacks a non-cairo implementation!"
1737    #endif
1738    }
1739    
1740    static void
1741    osm_gps_map_osd_restore (OsmGpsMap *map)
1742    {
1743        OsmGpsMapPrivate *priv = map->priv;
1744    
1745        /* restore backup of previous contents */
1746        if(priv->osd.backup) {
1747            /* create backup of background */
1748            gdk_draw_drawable(priv->pixmap,
1749                GTK_WIDGET(map)->style->fg_gc[GTK_WIDGET_STATE(GTK_WIDGET(map))],
1750                          priv->osd.backup, 0, 0,
1751                          priv->osd.backup_x, priv->osd.backup_y, OSD_W+2, OSD_H+2);
1752        }
1753    }
1754    
1755    #endif
1756    
1757  static gboolean  static gboolean
1758  osm_gps_map_map_redraw (OsmGpsMap *map)  osm_gps_map_map_redraw (OsmGpsMap *map)
1759  {  {
# Line 1217  osm_gps_map_map_redraw (OsmGpsMap *map) Line 1784  osm_gps_map_map_redraw (OsmGpsMap *map)
1784      osm_gps_map_print_tracks(map);      osm_gps_map_print_tracks(map);
1785      osm_gps_map_draw_gps_point(map);      osm_gps_map_draw_gps_point(map);
1786      osm_gps_map_print_images(map);      osm_gps_map_print_images(map);
1787    #ifdef ENABLE_BALLOON
1788        osm_gps_map_draw_balloon_int(map);
1789    #endif
1790    #ifdef ENABLE_OSD
1791        osm_gps_map_osd_draw_controls(map, 0, 0);
1792    #endif
1793    
1794      //osm_gps_map_osd_speed(map, 1.5);      //osm_gps_map_osd_speed(map, 1.5);
1795      osm_gps_map_purge_cache(map);      osm_gps_map_purge_cache(map);
# Line 1248  osm_gps_map_init (OsmGpsMap *object) Line 1821  osm_gps_map_init (OsmGpsMap *object)
1821      priv->gps = g_new0(coord_t, 1);      priv->gps = g_new0(coord_t, 1);
1822      priv->gps_valid = FALSE;      priv->gps_valid = FALSE;
1823    
1824    #ifdef ENABLE_BALLOON
1825        priv->balloon.coo = g_new0(coord_t, 1);
1826        priv->balloon.valid = FALSE;
1827        priv->balloon.cb = NULL;
1828    #endif
1829    
1830    #ifdef ENABLE_OSD
1831        priv->osd.backup = NULL;
1832        priv->osd.overlay = NULL;
1833        priv->osd.cb = NULL;
1834    #endif
1835    
1836      priv->tracks = NULL;      priv->tracks = NULL;
1837      priv->images = NULL;      priv->images = NULL;
1838    
# Line 1405  osm_gps_map_dispose (GObject *object) Line 1990  osm_gps_map_dispose (GObject *object)
1990      if (priv->idle_map_redraw != 0)      if (priv->idle_map_redraw != 0)
1991          g_source_remove (priv->idle_map_redraw);          g_source_remove (priv->idle_map_redraw);
1992    
1993        g_free(priv->gps);
1994    
1995    #ifdef ENABLE_BALLOON
1996        g_free(priv->balloon.coo);
1997    #endif
1998    
1999    #ifdef ENABLE_OSD
2000        if (priv->osd.backup)
2001            g_object_unref(priv->osd.backup);
2002    
2003        if (priv->osd.overlay)
2004             cairo_surface_destroy(priv->osd.overlay);
2005    #endif
2006    
2007      G_OBJECT_CLASS (osm_gps_map_parent_class)->dispose (object);      G_OBJECT_CLASS (osm_gps_map_parent_class)->dispose (object);
2008  }  }
2009    
# Line 1620  osm_gps_map_button_press (GtkWidget *wid Line 2219  osm_gps_map_button_press (GtkWidget *wid
2219  {  {
2220      OsmGpsMapPrivate *priv = OSM_GPS_MAP_PRIVATE(widget);      OsmGpsMapPrivate *priv = OSM_GPS_MAP_PRIVATE(widget);
2221    
2222    #ifdef ENABLE_BALLOON
2223        /* don't drag if the user clicked within the balloon */
2224        if (osm_gps_map_in_balloon(priv,
2225                       event->x + EXTRA_BORDER,
2226                       event->y + EXTRA_BORDER))
2227        {
2228            priv->drag_counter = -1;
2229            return FALSE;
2230        }
2231    #endif
2232    
2233    #ifdef ENABLE_OSD
2234        #define SCROLL_STEP 10
2235    
2236        /* pressed inside OSD control? */
2237        osd_button_t but = osm_gps_map_osd_check(event->x, event->y);
2238        if(but != OSD_NONE)
2239        {
2240            priv->drag_counter = -1;
2241    
2242            switch(but) {
2243            case OSD_GPS:
2244                priv->osd.cb(priv->osd.data);
2245                break;
2246    
2247            case OSD_UP:
2248                priv->map_y -= GTK_WIDGET(widget)->allocation.height/SCROLL_STEP;
2249                priv->center_coord_set = FALSE;
2250                break;
2251    
2252            case OSD_DOWN:
2253                priv->map_y += GTK_WIDGET(widget)->allocation.height/SCROLL_STEP;
2254                priv->center_coord_set = FALSE;
2255                break;
2256    
2257            case OSD_LEFT:
2258                priv->map_x -= GTK_WIDGET(widget)->allocation.width/SCROLL_STEP;
2259                priv->center_coord_set = FALSE;
2260                break;
2261    
2262            case OSD_RIGHT:
2263                priv->map_x += GTK_WIDGET(widget)->allocation.width/SCROLL_STEP;
2264                priv->center_coord_set = FALSE;
2265                break;
2266    
2267            case OSD_IN:
2268                osm_gps_map_set_zoom(OSM_GPS_MAP(widget), priv->map_zoom+1);
2269                break;
2270    
2271            case OSD_OUT:
2272                osm_gps_map_set_zoom(OSM_GPS_MAP(widget), priv->map_zoom-1);
2273                break;
2274    
2275            default:
2276                break;
2277            }
2278    
2279            osm_gps_map_map_redraw_idle(OSM_GPS_MAP(widget));
2280    
2281            return FALSE;
2282        }
2283    #endif
2284    
2285      priv->drag_counter = 0;      priv->drag_counter = 0;
2286      priv->drag_start_mouse_x = (int) event->x;      priv->drag_start_mouse_x = (int) event->x;
2287      priv->drag_start_mouse_y = (int) event->y;      priv->drag_start_mouse_y = (int) event->y;
# Line 1634  osm_gps_map_button_release (GtkWidget *w Line 2296  osm_gps_map_button_release (GtkWidget *w
2296  {  {
2297      OsmGpsMapPrivate *priv = OSM_GPS_MAP_PRIVATE(widget);      OsmGpsMapPrivate *priv = OSM_GPS_MAP_PRIVATE(widget);
2298    
2299    #ifdef ENABLE_BALLOON
2300        /* released inside the balloon? */
2301        if (osm_gps_map_in_balloon(priv,
2302                       event->x + EXTRA_BORDER,
2303                       event->y + EXTRA_BORDER))
2304        {
2305            osm_gps_map_handle_balloon_click(OSM_GPS_MAP(widget),
2306                 event->x - priv->balloon.rect.x + EXTRA_BORDER,
2307                 event->y - priv->balloon.rect.y + EXTRA_BORDER);
2308        }
2309    #endif
2310    
2311      if (priv->dragging)      if (priv->dragging)
2312      {      {
2313          priv->dragging = FALSE;          priv->dragging = FALSE;
# Line 1651  osm_gps_map_button_release (GtkWidget *w Line 2325  osm_gps_map_button_release (GtkWidget *w
2325    
2326      priv->drag_mouse_dx = 0;      priv->drag_mouse_dx = 0;
2327      priv->drag_mouse_dy = 0;      priv->drag_mouse_dy = 0;
2328      priv->drag_counter = 0;      priv->drag_counter = -1;
2329    
2330      return FALSE;      return FALSE;
2331  }  }
2332    
2333  static gboolean  static gboolean
2334    osm_gps_map_expose (GtkWidget *widget, GdkEventExpose  *event);
2335    
2336    static gboolean
2337  osm_gps_map_motion_notify (GtkWidget *widget, GdkEventMotion  *event)  osm_gps_map_motion_notify (GtkWidget *widget, GdkEventMotion  *event)
2338  {  {
2339      int x, y;      int x, y;
# Line 1676  osm_gps_map_motion_notify (GtkWidget *wi Line 2353  osm_gps_map_motion_notify (GtkWidget *wi
2353      if (!(state & GDK_BUTTON1_MASK))      if (!(state & GDK_BUTTON1_MASK))
2354          return FALSE;          return FALSE;
2355    
2356        if (priv->drag_counter < 0)
2357            return FALSE;
2358    
2359      priv->drag_counter++;      priv->drag_counter++;
2360    
2361      // we havent dragged more than 6 pixels      // we havent dragged more than 6 pixels
2362      if (priv->drag_counter < 6)      if (priv->drag_counter < 6)
2363          return FALSE;          return FALSE;
2364    
2365    #ifdef USE_MAEMO
2366        /* reduce update frequency on maemo to keep screen update fluid */
2367        static guint32 last_time = 0;
2368    
2369        if(event->time - last_time < 100) return FALSE;
2370        last_time = event->time;
2371    #endif
2372    
2373      priv->dragging = TRUE;      priv->dragging = TRUE;
2374    
2375      if (priv->map_auto_center)      if (priv->map_auto_center)
# Line 1690  osm_gps_map_motion_notify (GtkWidget *wi Line 2378  osm_gps_map_motion_notify (GtkWidget *wi
2378      priv->drag_mouse_dx = x - priv->drag_start_mouse_x;      priv->drag_mouse_dx = x - priv->drag_start_mouse_x;
2379      priv->drag_mouse_dy = y - priv->drag_start_mouse_y;      priv->drag_mouse_dy = y - priv->drag_start_mouse_y;
2380    
2381    #ifdef ENABLE_OSD
2382        /* undo OSD */
2383        osm_gps_map_osd_restore (OSM_GPS_MAP(widget));
2384    
2385        /* draw new OSD */
2386        osm_gps_map_osd_draw_controls (OSM_GPS_MAP(widget),
2387                                       -priv->drag_mouse_dx,
2388                                       -priv->drag_mouse_dy);
2389    #endif
2390    
2391        osm_gps_map_expose (widget, NULL);
2392    
2393    
2394        return FALSE;
2395    }
2396    
2397    static gboolean
2398    osm_gps_map_configure (GtkWidget *widget, GdkEventConfigure *event)
2399    {
2400        OsmGpsMapPrivate *priv = OSM_GPS_MAP_PRIVATE(widget);
2401    
2402        /* create pixmap */
2403        if (priv->pixmap)
2404            g_object_unref (priv->pixmap);
2405    
2406        priv->pixmap = gdk_pixmap_new (
2407                                       widget->window,
2408                                       widget->allocation.width + EXTRA_BORDER * 2,
2409                                       widget->allocation.height + EXTRA_BORDER * 2,
2410                                       -1);
2411    
2412        /* and gc, used for clipping (I think......) */
2413        if(priv->gc_map)
2414            g_object_unref(priv->gc_map);
2415    
2416        priv->gc_map = gdk_gc_new(priv->pixmap);
2417    
2418        osm_gps_map_map_redraw(OSM_GPS_MAP(widget));
2419    
2420        return FALSE;
2421    }
2422    
2423    static gboolean
2424    osm_gps_map_expose (GtkWidget *widget, GdkEventExpose  *event)
2425    {
2426        OsmGpsMapPrivate *priv = OSM_GPS_MAP_PRIVATE(widget);
2427    
2428      gdk_draw_drawable (      gdk_draw_drawable (
2429                         widget->window,                         widget->window,
2430                         widget->style->fg_gc[GTK_WIDGET_STATE (widget)],                         widget->style->fg_gc[GTK_WIDGET_STATE (widget)],
2431                         priv->pixmap,                         priv->pixmap,
2432                         0,0,                         0,0,
2433                         priv->drag_mouse_dx - EXTRA_BORDER, priv->drag_mouse_dy - EXTRA_BORDER,                         priv->drag_mouse_dx - EXTRA_BORDER,
2434                           priv->drag_mouse_dy - EXTRA_BORDER,
2435                         -1,-1);                         -1,-1);
2436    
2437      //Paint white outside of the map if dragging. Its less      //Paint white outside of the map if dragging. Its less
# Line 1739  osm_gps_map_motion_notify (GtkWidget *wi Line 2475  osm_gps_map_motion_notify (GtkWidget *wi
2475                              widget->allocation.width,                              widget->allocation.width,
2476                              -priv->drag_mouse_dy - EXTRA_BORDER);                              -priv->drag_mouse_dy - EXTRA_BORDER);
2477      }      }
2478    #if 0
2479      return FALSE;      if(!priv->dragging)
2480  }          gdk_draw_drawable (
   
 static gboolean  
 osm_gps_map_configure (GtkWidget *widget, GdkEventConfigure *event)  
 {  
     OsmGpsMapPrivate *priv = OSM_GPS_MAP_PRIVATE(widget);  
   
     /* create pixmap */  
     if (priv->pixmap)  
         g_object_unref (priv->pixmap);  
   
     priv->pixmap = gdk_pixmap_new (  
                                    widget->window,  
                                    widget->allocation.width + EXTRA_BORDER * 2,  
                                    widget->allocation.height + EXTRA_BORDER * 2,  
                                    -1);  
   
     /* and gc, used for clipping (I think......) */  
     if(priv->gc_map)  
         g_object_unref(priv->gc_map);  
   
     priv->gc_map = gdk_gc_new(priv->pixmap);  
   
     osm_gps_map_map_redraw(OSM_GPS_MAP(widget));  
   
     return FALSE;  
 }  
   
 static gboolean  
 osm_gps_map_expose (GtkWidget *widget, GdkEventExpose  *event)  
 {  
     OsmGpsMapPrivate *priv = OSM_GPS_MAP_PRIVATE(widget);  
   
     gdk_draw_drawable (  
2481                         widget->window,                         widget->window,
2482                         widget->style->fg_gc[GTK_WIDGET_STATE (widget)],                         widget->style->fg_gc[GTK_WIDGET_STATE (widget)],
2483                         priv->pixmap,                         priv->pixmap,
2484                         event->area.x + EXTRA_BORDER, event->area.y + EXTRA_BORDER,                         event->area.x + EXTRA_BORDER,
2485                           event->area.y + EXTRA_BORDER,
2486                         event->area.x, event->area.y,                         event->area.x, event->area.y,
2487                         event->area.width, event->area.height);                         event->area.width, event->area.height);
2488    #endif
2489      return FALSE;      return FALSE;
2490  }  }
2491    
# Line 1967  osm_gps_map_class_init (OsmGpsMapClass * Line 2671  osm_gps_map_class_init (OsmGpsMapClass *
2671                                                         "radius of the gps point inner circle",                                                         "radius of the gps point inner circle",
2672                                                         0,           /* minimum property value */                                                         0,           /* minimum property value */
2673                                                         G_MAXINT,    /* maximum property value */                                                         G_MAXINT,    /* maximum property value */
2674                                                         5,                                                         10,
2675                                                         G_PARAM_READABLE | G_PARAM_WRITABLE | G_PARAM_CONSTRUCT));                                                         G_PARAM_READABLE | G_PARAM_WRITABLE | G_PARAM_CONSTRUCT));
2676    
2677      g_object_class_install_property (object_class,      g_object_class_install_property (object_class,
# Line 2553  osm_gps_map_get_scale(OsmGpsMap *map) Line 3257  osm_gps_map_get_scale(OsmGpsMap *map)
3257      return osm_gps_map_get_scale_at_point(priv->map_zoom, priv->center_rlat, priv->center_rlon);      return osm_gps_map_get_scale_at_point(priv->map_zoom, priv->center_rlat, priv->center_rlon);
3258  }  }
3259    
3260    #ifdef ENABLE_BALLOON
3261    void
3262    osm_gps_map_draw_balloon (OsmGpsMap *map, float latitude, float longitude,
3263                              OsmGpsMapBalloonCallback cb, gpointer data)
3264    {
3265        OsmGpsMapPrivate *priv;
3266    
3267        /* remove and previously installed balloon */
3268        osm_gps_map_clear_balloon (map);
3269    
3270        g_return_if_fail (OSM_IS_GPS_MAP (map));
3271        priv = map->priv;
3272    
3273        priv->balloon.coo->rlat = deg2rad(latitude);
3274        priv->balloon.coo->rlon = deg2rad(longitude);
3275        priv->balloon.valid = TRUE;
3276    
3277        priv->balloon.cb = cb;
3278        priv->balloon.data = data;
3279    
3280        // this redraws the map
3281        osm_gps_map_map_redraw_idle(map);
3282    }
3283    
3284    void
3285    osm_gps_map_clear_balloon (OsmGpsMap *map)
3286    {
3287        OsmGpsMapPrivate *priv;
3288    
3289        g_return_if_fail (OSM_IS_GPS_MAP (map));
3290        priv = map->priv;
3291    
3292        priv->balloon.valid = FALSE;
3293    
3294        osm_gps_map_map_redraw_idle(map);
3295    }
3296    #endif
3297    
3298    #ifdef ENABLE_OSD
3299    void osm_gps_map_osd_enable_gps (OsmGpsMap *map, OsmGpsMapOsdGpsCallback cb, gpointer data) {
3300        OsmGpsMapPrivate *priv;
3301    
3302        g_return_if_fail (OSM_IS_GPS_MAP (map));
3303        priv = map->priv;
3304    
3305        priv->osd.cb = cb;
3306        priv->osd.data = data;
3307    
3308        /* this may have changed the state of the gps button */
3309        /* we thus re-render the overlay */
3310        osm_gps_map_osd_render(priv);
3311    
3312        osm_gps_map_map_redraw_idle(map);
3313    }
3314    #endif
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