C++ (Cpp) osm_gps_map_image_remove Examples

Example #1

File: map.c Project: chubinou/darktable

static gboolean _view_map_motion_notify_callback(GtkWidget *w, GdkEventMotion *e, dt_view_t *self)
{
  dt_map_t *lib = (dt_map_t*)self->data;
  const int ts = 64;

  if(lib->start_drag && lib->selected_image > 0)
  {
    for(GSList *iter = lib->images; iter != NULL; iter = iter->next)
    {
      dt_map_image_t *entry = (dt_map_image_t*)iter->data;
      OsmGpsMapImage *image = entry->image;
      if(entry->imgid == lib->selected_image)
      {
        osm_gps_map_image_remove(lib->map, image);
        break;
      }
    }

    lib->start_drag = FALSE;
    GtkTargetList *targets = gtk_target_list_new(target_list_all, n_targets_all);

    dt_mipmap_buffer_t buf;
    dt_mipmap_size_t mip = dt_mipmap_cache_get_matching_size(darktable.mipmap_cache, ts, ts);
    dt_mipmap_cache_read_get(darktable.mipmap_cache, &buf, lib->selected_image, mip, DT_MIPMAP_BLOCKING);

    if(buf.buf)
    {
      uint8_t *scratchmem = dt_mipmap_cache_alloc_scratchmem(darktable.mipmap_cache);
      uint8_t *buf_decompressed = dt_mipmap_cache_decompress(&buf, scratchmem);

      uint8_t *rgbbuf = g_malloc((buf.width+2)*(buf.height+2)*3);
      memset(rgbbuf, 64, (buf.width+2)*(buf.height+2)*3);
      for(int i=1; i<=buf.height; i++)
        for(int j=1; j<=buf.width; j++)
          for(int k=0; k<3; k++)
            rgbbuf[(i*(buf.width+2)+j)*3+k] = buf_decompressed[((i-1)*buf.width+j-1)*4+2-k];

      int w=ts, h=ts;
      if(buf.width < buf.height) w = (buf.width*ts)/buf.height; // portrait
      else                       h = (buf.height*ts)/buf.width; // landscape

      GdkPixbuf *source = gdk_pixbuf_new_from_data(rgbbuf, GDK_COLORSPACE_RGB, FALSE, 8, (buf.width+2), (buf.height+2), (buf.width+2)*3, NULL, NULL);
      GdkPixbuf *scaled = gdk_pixbuf_scale_simple(source, w, h, GDK_INTERP_HYPER);
      GdkDragContext * context = gtk_drag_begin(GTK_WIDGET(lib->map), targets, GDK_ACTION_COPY, 1, (GdkEvent*)e);
      gtk_drag_set_icon_pixbuf(context, scaled, 0, 0);

      if(source)
        g_object_unref(source);
      if(scaled)
        g_object_unref(scaled);
      g_free(rgbbuf);
    }

    dt_mipmap_cache_read_release(darktable.mipmap_cache, &buf);

    gtk_target_list_unref(targets);
    return TRUE;
  }
  return FALSE;
}

Example #2

File: mapviewer.c Project: accumulator/osm-gps-map

static gboolean
on_button_press_event (GtkWidget *widget, GdkEventButton *event, gpointer user_data)
{
    OsmGpsMapPoint coord;
    float lat, lon;
    OsmGpsMap *map = OSM_GPS_MAP(widget);
    OsmGpsMapTrack *othertrack = OSM_GPS_MAP_TRACK(user_data);

    if (event->type == GDK_3BUTTON_PRESS) {
        if (event->button == 1) {
            if (g_last_image)
                osm_gps_map_image_remove (map, g_last_image);
        }
        if (event->button == 3) {
            osm_gps_map_track_remove(map, othertrack);
        }
    }

    if (event->type == GDK_2BUTTON_PRESS) {
        osm_gps_map_convert_screen_to_geographic(map, event->x, event->y, &coord);
        osm_gps_map_point_get_degrees(&coord, &lat, &lon);
        if (event->button == 1) {
            osm_gps_map_gps_add (map,
                                 lat,
                                 lon,
                                 g_random_double_range(0,360));
        }
        if (event->button == 3) {
            osm_gps_map_track_add_point(othertrack, &coord);
        }
    }

    if (event->type == GDK_BUTTON_PRESS) {
        if (event->button == 2) {
        osm_gps_map_convert_screen_to_geographic(map, event->x, event->y, &coord);
        osm_gps_map_point_get_degrees(&coord, &lat, &lon);
            g_last_image = osm_gps_map_image_add (
                                    map,
                                    lat,
                                    lon,
                                    g_star_image);
        }
    }
    return FALSE;
}