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

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revision 87 by harbaum, Mon Aug 31 12:01:28 2009 UTC revision 103 by harbaum, Wed Sep 9 11:50:50 2009 UTC
# Line 25  Line 25 
25  /* OSD_DIAMETER */  /* OSD_DIAMETER */
26  /* OSD_X, OSD_Y */  /* OSD_X, OSD_Y */
27    
28    #ifndef OSD_SCALE_FONT_SIZE
29    #define OSD_SCALE_FONT_SIZE 12
30    #endif
31    #define OSD_SCALE_W   (10*OSD_SCALE_FONT_SIZE)
32    #define OSD_SCALE_H   (5*OSD_SCALE_FONT_SIZE/2)
33    
34  #ifndef USE_CAIRO  #ifndef USE_CAIRO
35  #error "OSD control display lacks a non-cairo implementation!"  #error "OSD control display lacks a non-cairo implementation!"
36  #endif  #endif
# Line 39  typedef struct { Line 45  typedef struct {
45      /* the offscreen representation of the OSD */      /* the offscreen representation of the OSD */
46      cairo_surface_t *overlay;      cairo_surface_t *overlay;
47    
48    #ifdef OSD_SCALE
49        cairo_surface_t *scale;
50        int scale_zoom;
51    #endif
52    
53    #ifdef OSD_SOURCE_SEL
54      /* values to handle the "source" menu */      /* values to handle the "source" menu */
55      cairo_surface_t *map_source;      cairo_surface_t *map_source;
56      gboolean expanded;      gboolean expanded;
57      gint shift, dir, count;      gint shift, dir, count;
58      gint handler_id;      gint handler_id;
59      gint width, height;      gint width, height;
60    #endif
61    
62  } osd_priv_t;  } osd_priv_t;
63    
# Line 258  osd_check_zoom(gint x, gint y) { Line 271  osd_check_zoom(gint x, gint y) {
271      return OSD_NONE;      return OSD_NONE;
272  }  }
273    
274    #ifdef OSD_SOURCE_SEL
275    
276  /* place source selection at right border */  /* place source selection at right border */
277  #define OSD_S_RAD (Z_RAD)  #define OSD_S_RAD (Z_RAD)
278  #define OSD_S_X   (-OSD_X)  #define OSD_S_X   (-OSD_X)
# Line 281  osd_check_zoom(gint x, gint y) { Line 296  osd_check_zoom(gint x, gint y) {
296  #define OSD_TEXT_BORDER   (OSD_FONT_SIZE/2)  #define OSD_TEXT_BORDER   (OSD_FONT_SIZE/2)
297  #define OSD_TEXT_SKIP     (OSD_FONT_SIZE/8)  #define OSD_TEXT_SKIP     (OSD_FONT_SIZE/8)
298    
299    /* draw the shape of the source selection OSD, either only the puller (not expanded) */
300    /* or the entire menu incl. the puller (expanded) */
301  static void  static void
302  osd_source_shape(osd_priv_t *priv, cairo_t *cr, gint x, gint y) {  osd_source_shape(osd_priv_t *priv, cairo_t *cr, gint x, gint y) {
303      if(!priv->expanded) {      if(!priv->expanded) {
# Line 336  osd_source_content(osm_gps_map_osd_t *os Line 353  osd_source_content(osm_gps_map_osd_t *os
353                                      CAIRO_FONT_WEIGHT_BOLD);                                      CAIRO_FONT_WEIGHT_BOLD);
354              cairo_set_font_size (cr, OSD_FONT_SIZE);              cairo_set_font_size (cr, OSD_FONT_SIZE);
355    
356              int i, step = (priv->height - 2*OSD_TEXT_BORDER)              int i, step = (priv->height - 2*OSD_TEXT_BORDER) /
357                  / OSM_GPS_MAP_SOURCE_LAST;                  OSM_GPS_MAP_SOURCE_LAST;
358              for(i=OSM_GPS_MAP_SOURCE_NULL+1;i<=OSM_GPS_MAP_SOURCE_LAST;i++) {              for(i=OSM_GPS_MAP_SOURCE_NULL+1;i<=OSM_GPS_MAP_SOURCE_LAST;i++) {
359                  cairo_text_extents_t extents;                  cairo_text_extents_t extents;
360                  const char *src = osm_gps_map_source_get_friendly_name(i);                  const char *src = osm_gps_map_source_get_friendly_name(i);
# Line 425  osd_render_source_sel(osm_gps_map_osd_t Line 442  osd_render_source_sel(osm_gps_map_osd_t
442      cairo_destroy(cr);      cairo_destroy(cr);
443  }  }
444    
445    /* re-allocate the buffer used to draw the menu. This is used */
446    /* to collapse/expand the buffer */
447  static void  static void
448  osd_source_reallocate(osm_gps_map_osd_t *osd) {  osd_source_reallocate(osm_gps_map_osd_t *osd) {
449      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
# Line 434  osd_source_reallocate(osm_gps_map_osd_t Line 453  osd_source_reallocate(osm_gps_map_osd_t
453    
454      int w = OSD_S_W, h = OSD_S_H;      int w = OSD_S_W, h = OSD_S_H;
455      if(priv->expanded) {      if(priv->expanded) {
         /* ... and right of it the waypoint id */  
456          cairo_text_extents_t extents;          cairo_text_extents_t extents;
457    
458          /* determine content size */          /* determine content size */
# Line 450  osd_source_reallocate(osm_gps_map_osd_t Line 468  osd_source_reallocate(osm_gps_map_osd_t
468              const char *src = osm_gps_map_source_get_friendly_name(i);              const char *src = osm_gps_map_source_get_friendly_name(i);
469              cairo_text_extents (cr, src, &extents);              cairo_text_extents (cr, src, &extents);
470    
             //            printf("Source %d: %s = %f %f\n", i, src,  
             //                   extents.width, extents.height);  
   
471              if(extents.width > max_w) max_w = extents.width;              if(extents.width > max_w) max_w = extents.width;
472              if(extents.height > max_h) max_h = extents.height;              if(extents.height > max_h) max_h = extents.height;
473          }          }
# Line 471  osd_source_reallocate(osm_gps_map_osd_t Line 486  osd_source_reallocate(osm_gps_map_osd_t
486          cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w+2, h+2);          cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w+2, h+2);
487    
488      osd_render_source_sel(osd);      osd_render_source_sel(osd);
   
489  }  }
490    
491  #define OSD_HZ      15  #define OSD_HZ      15
# Line 503  static gboolean osd_source_animate(gpoin Line 517  static gboolean osd_source_animate(gpoin
517    
518      /* count runs linearly from 0 to 1000, map this nicely onto a position */      /* count runs linearly from 0 to 1000, map this nicely onto a position */
519    
     /* simple linear mapping */  
     //    priv->shift = (osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X) +  
     //        (diff * priv->count)/1000;  
   
520      /* nicer sinoid mapping */      /* nicer sinoid mapping */
521      float m = 0.5-cos(priv->count * M_PI / 1000.0)/2;      float m = 0.5-cos(priv->count * M_PI / 1000.0)/2;
522      priv->shift = (osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X) +      priv->shift = (osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X) +
# Line 547  osd_source_toggle(osm_gps_map_osd_t *osd Line 557  osd_source_toggle(osm_gps_map_osd_t *osd
557      priv->handler_id = gtk_timeout_add(OSD_TIME/OSD_HZ, osd_source_animate, osd);      priv->handler_id = gtk_timeout_add(OSD_TIME/OSD_HZ, osd_source_animate, osd);
558  }  }
559    
560    /* check if the user clicked inside the source selection area */
561  static osd_button_t  static osd_button_t
562  osd_source_check(osm_gps_map_osd_t *osd, gint x, gint y) {  osd_source_check(osm_gps_map_osd_t *osd, gint x, gint y) {
563      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
# Line 573  osd_source_check(osm_gps_map_osd_t *osd, Line 584  osd_source_check(osm_gps_map_osd_t *osd,
584              return OSD_BG;              return OSD_BG;
585          }          }
586      }      }
587    
588        /* check for clicks into data area */
589        if(priv->expanded && !priv->handler_id) {
590            /* re-adjust from puller top to content top */
591            if(OSD_S_Y < 0)
592                y += OSD_S_EXP_H - OSD_S_PH;
593    
594            if(x > OSD_S_PW &&
595               x < OSD_S_PW + OSD_S_EXP_W &&
596               y > 0 &&
597               y < OSD_S_EXP_H) {
598    
599                int step = (priv->height - 2*OSD_TEXT_BORDER)
600                    / OSM_GPS_MAP_SOURCE_LAST;
601    
602                y -= OSD_TEXT_BORDER - OSD_TEXT_SKIP;
603                y /= step;
604                y += 1;
605    
606                gint old = 0;
607                g_object_get(osd->widget, "map-source", &old, NULL);
608    
609                if(y > OSM_GPS_MAP_SOURCE_NULL &&
610                   y <= OSM_GPS_MAP_SOURCE_LAST &&
611                   old != y) {
612                    g_object_set(osd->widget, "map-source", y, NULL);
613    
614                    osd_render_source_sel(osd);
615                    osm_gps_map_repaint(OSM_GPS_MAP(osd->widget));
616                }
617    
618                /* return "clicked in OSD background" to prevent further */
619                /* processing by application */
620                return OSD_BG;
621            }
622        }
623    
624      return OSD_NONE;      return OSD_NONE;
625  }  }
626    #endif // OSD_SOURCE_SEL
627    
628  static osd_button_t  static osd_button_t
629  osd_check(osm_gps_map_osd_t *osd, gint x, gint y) {  osd_check(osm_gps_map_osd_t *osd, gint x, gint y) {
# Line 680  osd_zoom_labels(cairo_t *cr, gint x, gin Line 729  osd_zoom_labels(cairo_t *cr, gint x, gin
729      cairo_line_to (cr, x + Z_RIGHT + Z_LEN, y + Z_MID);      cairo_line_to (cr, x + Z_RIGHT + Z_LEN, y + Z_MID);
730  }  }
731    
732    /* various parameters used to create the scale */
733    #define OSD_SCALE_H2   (OSD_SCALE_H/2)
734    #define OSD_SCALE_TICK (2*OSD_SCALE_FONT_SIZE/3)
735    #define OSD_SCALE_M    (OSD_SCALE_H2 - OSD_SCALE_TICK)
736    #define OSD_SCALE_I    (OSD_SCALE_H2 + OSD_SCALE_TICK)
737    #define OSD_SCALE_FD   (OSD_SCALE_FONT_SIZE/4)
738    
739    static void
740    osd_render_scale(osm_gps_map_osd_t *osd)
741    {
742        osd_priv_t *priv = (osd_priv_t*)osd->priv;
743    
744        /* this only needs to be rendered if the zoom has changed */
745        gint zoom;
746        g_object_get(OSM_GPS_MAP(osd->widget), "zoom", &zoom, NULL);
747        if(zoom == priv->scale_zoom)
748            return;
749    
750        priv->scale_zoom = zoom;
751    
752        float m_per_pix = osm_gps_map_get_scale(OSM_GPS_MAP(osd->widget));
753    
754        /* first fill with transparency */
755        cairo_t *cr = cairo_create(priv->scale);
756        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
757        cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0);
758        // pink for testing:    cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.2);
759        cairo_paint(cr);
760        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
761    
762        /* determine the size of the scale width in meters */
763        float width = (OSD_SCALE_W-OSD_SCALE_FONT_SIZE/6) * m_per_pix;
764    
765        /* scale this to useful values */
766        int exp = logf(width)*M_LOG10E;
767        int mant = width/pow(10,exp);
768        int width_metric = mant * pow(10,exp);
769        char *dist_str = NULL;
770        if(width_metric<1000)
771            dist_str = g_strdup_printf("%u m", width_metric);
772        else
773            dist_str = g_strdup_printf("%u km", width_metric/1000);
774        width_metric /= m_per_pix;
775    
776        /* and now the hard part: scale for useful imperial values :-( */
777        /* try to convert to feet, 1ft == 0.3048 m */
778        width /= 0.3048;
779        float imp_scale = 0.3048;
780        char *dist_imp_unit = "ft";
781    
782        if(width >= 100) {
783            /* 1yd == 3 feet */
784            width /= 3.0;
785            imp_scale *= 3.0;
786            dist_imp_unit = "yd";
787    
788            if(width >= 1760.0) {
789                /* 1mi == 1760 yd */
790                width /= 1760.0;
791                imp_scale *= 1760.0;
792                dist_imp_unit = "mi";
793            }
794        }
795    
796        /* also convert this to full tens/hundreds */
797        exp = logf(width)*M_LOG10E;
798        mant = width/pow(10,exp);
799        int width_imp = mant * pow(10,exp);
800        char *dist_str_imp = g_strdup_printf("%u %s", width_imp, dist_imp_unit);
801    
802        /* convert back to pixels */
803        width_imp *= imp_scale;
804        width_imp /= m_per_pix;
805    
806        cairo_select_font_face (cr, "Sans",
807                                CAIRO_FONT_SLANT_NORMAL,
808                                CAIRO_FONT_WEIGHT_BOLD);
809        cairo_set_font_size (cr, OSD_SCALE_FONT_SIZE);
810        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0);
811    
812        cairo_text_extents_t extents;
813        cairo_text_extents (cr, dist_str, &extents);
814    
815        cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
816        cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/6);
817        cairo_move_to (cr, 2*OSD_SCALE_FD, OSD_SCALE_H2-OSD_SCALE_FD);
818        cairo_text_path (cr, dist_str);
819        cairo_stroke (cr);
820        cairo_move_to (cr, 2*OSD_SCALE_FD,
821                       OSD_SCALE_H2+OSD_SCALE_FD + extents.height);
822        cairo_text_path (cr, dist_str_imp);
823        cairo_stroke (cr);
824    
825        cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
826        cairo_move_to (cr, 2*OSD_SCALE_FD, OSD_SCALE_H2-OSD_SCALE_FD);
827        cairo_show_text (cr, dist_str);
828        cairo_move_to (cr, 2*OSD_SCALE_FD,
829                       OSD_SCALE_H2+OSD_SCALE_FD + extents.height);
830        cairo_show_text (cr, dist_str_imp);
831    
832        g_free(dist_str);
833        g_free(dist_str_imp);
834    
835        /* draw white line */
836        cairo_set_line_cap  (cr, CAIRO_LINE_CAP_ROUND);
837        cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 1.0);
838        cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/3);
839        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_M);
840        cairo_rel_line_to (cr, 0,  OSD_SCALE_TICK);
841        cairo_rel_line_to (cr, width_metric, 0);
842        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
843        cairo_stroke(cr);
844        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_I);
845        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
846        cairo_rel_line_to (cr, width_imp, 0);
847        cairo_rel_line_to (cr, 0, +OSD_SCALE_TICK);
848        cairo_stroke(cr);
849    
850        /* draw black line */
851        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0);
852        cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/6);
853        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_M);
854        cairo_rel_line_to (cr, 0,  OSD_SCALE_TICK);
855        cairo_rel_line_to (cr, width_metric, 0);
856        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
857        cairo_stroke(cr);
858        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_I);
859        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
860        cairo_rel_line_to (cr, width_imp, 0);
861        cairo_rel_line_to (cr, 0, +OSD_SCALE_TICK);
862        cairo_stroke(cr);
863    
864        cairo_destroy(cr);
865    }
866    
867  static void  static void
868  osd_render(osm_gps_map_osd_t *osd) {  osd_render(osm_gps_map_osd_t *osd)
869    {
870      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
871    
872  #ifndef OSD_COLOR  #ifndef OSD_COLOR
# Line 763  osd_render(osm_gps_map_osd_t *osd) { Line 948  osd_render(osm_gps_map_osd_t *osd) {
948    
949      cairo_destroy(cr);      cairo_destroy(cr);
950    
951    #ifdef OSD_SOURCE_SEL
952      osd_render_source_sel(osd);      osd_render_source_sel(osd);
953    #endif
954    
955    #ifdef OSD_SCALE
956        osd_render_scale(osd);
957    #endif
958  }  }
959    
960  static void  static void
# Line 778  osd_draw(osm_gps_map_osd_t *osd, GdkDraw Line 969  osd_draw(osm_gps_map_osd_t *osd, GdkDraw
969          priv->overlay =          priv->overlay =
970              cairo_image_surface_create(CAIRO_FORMAT_ARGB32, OSD_W+2, OSD_H+2);              cairo_image_surface_create(CAIRO_FORMAT_ARGB32, OSD_W+2, OSD_H+2);
971    
972    #ifdef OSD_SOURCE_SEL
973          /* the initial OSD state is alway not-expanded */          /* the initial OSD state is alway not-expanded */
974          priv->map_source =          priv->map_source =
975              cairo_image_surface_create(CAIRO_FORMAT_ARGB32,              cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
976                                             OSD_S_W+2, OSD_S_H+2);                                             OSD_S_W+2, OSD_S_H+2);
977    #endif
978    
979    #ifdef OSD_SCALE
980            priv->scale =
981                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
982                                           OSD_SCALE_W, OSD_SCALE_H);
983            priv->scale_zoom = -1;
984    #endif
985    
986          /* ... and render it */          /* ... and render it */
987          osd_render(osd);          osd_render(osd);
# Line 822  osd_draw(osm_gps_map_osd_t *osd, GdkDraw Line 1022  osd_draw(osm_gps_map_osd_t *osd, GdkDraw
1022      cairo_paint(cr);      cairo_paint(cr);
1023  #endif  #endif
1024    
1025    #ifdef OSD_SCALE
1026        x =  OSD_X;
1027        y = -OSD_Y;
1028        if(x < 0) x += osd->widget->allocation.width - OSD_SCALE_W;
1029        if(y < 0) y += osd->widget->allocation.height - OSD_SCALE_H;
1030    
1031        cairo_set_source_surface(cr, priv->scale, x, y);
1032        cairo_paint(cr);
1033    #endif
1034    
1035      cairo_destroy(cr);      cairo_destroy(cr);
1036  }  }
1037    
# Line 830  osd_free(osm_gps_map_osd_t *osd) Line 1040  osd_free(osm_gps_map_osd_t *osd)
1040  {  {
1041      osd_priv_t *priv = (osd_priv_t *)(osd->priv);      osd_priv_t *priv = (osd_priv_t *)(osd->priv);
1042    
     if(priv->handler_id)  
         gtk_timeout_remove(priv->handler_id);  
   
1043      if (priv->overlay)      if (priv->overlay)
1044           cairo_surface_destroy(priv->overlay);           cairo_surface_destroy(priv->overlay);
1045    
1046    #ifdef OSD_SOURCE_SEL
1047        if(priv->handler_id)
1048            gtk_timeout_remove(priv->handler_id);
1049    
1050      if (priv->map_source)      if (priv->map_source)
1051           cairo_surface_destroy(priv->map_source);           cairo_surface_destroy(priv->map_source);
1052    #endif
1053    
1054    #ifdef OSD_SCALE
1055        if (priv->scale)
1056             cairo_surface_destroy(priv->scale);
1057    #endif
1058    
1059      g_free(priv);      g_free(priv);
1060  }  }
1061    
 /* this is the only function that's externally visible */  
1062  static gboolean  static gboolean
1063  osd_busy(osm_gps_map_osd_t *osd)  osd_busy(osm_gps_map_osd_t *osd)
1064  {  {
1065    #ifdef OSD_SOURCE_SEL
1066      osd_priv_t *priv = (osd_priv_t *)(osd->priv);      osd_priv_t *priv = (osd_priv_t *)(osd->priv);
1067      return (priv->handler_id != 0);      return (priv->handler_id != 0);
1068    #else
1069        return FALSE;
1070    #endif
1071  }  }
1072    
1073  static osm_gps_map_osd_t osd_classic = {  static osm_gps_map_osd_t osd_classic = {
1074        .widget     = NULL,
1075    
1076      .draw       = osd_draw,      .draw       = osd_draw,
1077      .check      = osd_check,      .check      = osd_check,
1078      .render     = osd_render,      .render     = osd_render,
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Removed from v.87  
changed lines
  Added in v.103