2 * Copyright (C) 2009-2011 Andy Spencer <andy753421@gmail.com>
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
20 * @short_description: Map plugin
22 * #GritsPluginMap provides map overlays. Much of this data is obtained from the
23 * OpenStreetMap project.
27 #include <glib/gstdio.h>
33 #define MAX_RESOLUTION 1
34 #define TILE_WIDTH 256
35 #define TILE_HEIGHT 256
37 //#define MAX_RESOLUTION 100
38 //#define TILE_WIDTH 1024
39 //#define TILE_HEIGHT 512
41 static const guchar colormap[][2][4] = {
42 {{0x73, 0x91, 0xad}, {0x73, 0x91, 0xad, 0x00}}, // Oceans
43 {{0xf6, 0xee, 0xee}, {0xf6, 0xee, 0xee, 0x00}}, // Ground
44 {{0xff, 0xff, 0xff}, {0xff, 0xff, 0xff, 0xff}}, // Borders
45 {{0x73, 0x93, 0xad}, {0x73, 0x93, 0xad, 0x40}}, // Lakes
46 {{0xff, 0xe1, 0x80}, {0xff, 0xe1, 0x80, 0x60}}, // Cities
49 static void _load_tile_thread(gpointer _tile, gpointer _map)
51 GritsTile *tile = _tile;
52 GritsPluginMap *map = _map;
54 g_debug("GritsPluginMap: _load_tile_thread start %p - tile=%p",
55 g_thread_self(), tile);
57 g_debug("GritsPluginMap: _load_tile_thread - aborted");
62 gchar *path = grits_tms_fetch(map->tms, tile, GRITS_ONCE, NULL, NULL);
63 //gchar *path = grits_wms_fetch(map->wms, tile, GRITS_ONCE, NULL, NULL);
64 if (!path) return; // Canceled/error
67 GdkPixbuf *pixbuf = gdk_pixbuf_new_from_file(path, NULL);
69 g_warning("GritsPluginMap: _load_tile_thread - Error loading pixbuf %s", path);
77 /* Map texture colors, if needed */
78 gint width = gdk_pixbuf_get_width(pixbuf);
79 gint height = gdk_pixbuf_get_height(pixbuf);
80 guchar *pixels = gdk_pixbuf_get_pixels(pixbuf);
81 for (int i = 0; i < width * height; i++) {
82 for (int j = 0; j < G_N_ELEMENTS(colormap); j++) {
83 if (pixels[i*4+0] == colormap[j][0][0] &&
84 pixels[i*4+1] == colormap[j][0][1] &&
85 pixels[i*4+2] == colormap[j][0][2]) {
86 pixels[i*4+0] = colormap[j][1][0];
87 pixels[i*4+1] = colormap[j][1][1];
88 pixels[i*4+2] = colormap[j][1][2];
89 pixels[i*4+3] = colormap[j][1][3];
96 /* Load the GL texture from the main thread */
97 grits_tile_load_pixbuf(tile, pixbuf);
98 g_debug("GritsPluginMap: _load_tile_thread end %p", g_thread_self());
101 static void _load_tile_func(GritsTile *tile, gpointer _map)
103 g_debug("GritsPluginMap: _load_tile_func - tile=%p", tile);
104 GritsPluginMap *map = _map;
105 g_thread_pool_push(map->threads, tile, NULL);
111 static void _on_location_changed(GritsViewer *viewer,
112 gdouble lat, gdouble lon, gdouble elev, GritsPluginMap *map)
114 GritsPoint eye = {lat, lon, elev};
115 grits_tile_update(map->tiles, &eye,
116 MAX_RESOLUTION, TILE_WIDTH, TILE_WIDTH,
117 _load_tile_func, map);
118 grits_tile_gc(map->tiles, time(NULL)-10, NULL, map);
125 * grits_plugin_map_new:
126 * @viewer: the #GritsViewer to use for drawing
128 * Create a new instance of the map plugin.
130 * Returns: the new #GritsPluginMap
132 GritsPluginMap *grits_plugin_map_new(GritsViewer *viewer)
134 g_debug("GritsPluginMap: new");
135 GritsPluginMap *map = g_object_new(GRITS_TYPE_PLUGIN_MAP, NULL);
136 map->viewer = g_object_ref(viewer);
138 /* Load initial tiles */
139 gdouble lat, lon, elev;
140 grits_viewer_get_location(viewer, &lat, &lon, &elev);
141 _on_location_changed(viewer, lat, lon, elev, map);
143 /* Connect signals */
144 map->sigid = g_signal_connect(map->viewer, "location-changed",
145 G_CALLBACK(_on_location_changed), map);
148 grits_viewer_add(viewer, GRITS_OBJECT(map->tiles), GRITS_LEVEL_WORLD, FALSE);
158 static void grits_plugin_map_plugin_init(GritsPluginInterface *iface);
159 G_DEFINE_TYPE_WITH_CODE(GritsPluginMap, grits_plugin_map, G_TYPE_OBJECT,
160 G_IMPLEMENT_INTERFACE(GRITS_TYPE_PLUGIN,
161 grits_plugin_map_plugin_init));
162 static void grits_plugin_map_plugin_init(GritsPluginInterface *iface)
164 g_debug("GritsPluginMap: plugin_init");
165 /* Add methods to the interface */
167 /* Class/Object init */
168 static void grits_plugin_map_init(GritsPluginMap *map)
170 g_debug("GritsPluginMap: init");
172 map->threads = g_thread_pool_new(_load_tile_thread, map, 1, FALSE, NULL);
173 map->tiles = grits_tile_new(NULL, 85.0511, -85.0511, EAST, WEST);
174 map->tms = grits_tms_new("http://tile.openstreetmap.org",
176 map->tiles->proj = GRITS_PROJ_MERCATOR;
177 //map->tiles = grits_tile_new(NULL, NORTH, SOUTH, EAST, WEST);
178 //map->wms = grits_wms_new(
179 // "http://vmap0.tiles.osgeo.org/wms/vmap0",
180 // "basic,priroad,secroad,depthcontour,clabel,statelabel",
181 // "image/png", "osm/", "png", TILE_WIDTH, TILE_HEIGHT);
182 g_object_ref(map->tiles);
184 static void grits_plugin_map_dispose(GObject *gobject)
186 g_debug("GritsPluginMap: dispose");
187 GritsPluginMap *map = GRITS_PLUGIN_MAP(gobject);
189 /* Drop references */
191 GritsViewer *viewer = map->viewer;
192 g_signal_handler_disconnect(viewer, map->sigid);
193 grits_http_abort(map->tms->http);
194 //grits_http_abort(map->wms->http);
195 g_thread_pool_free(map->threads, TRUE, TRUE);
197 grits_viewer_remove(viewer, GRITS_OBJECT(map->tiles));
198 g_object_unref(map->tiles);
199 g_object_unref(viewer);
201 G_OBJECT_CLASS(grits_plugin_map_parent_class)->dispose(gobject);
203 static void grits_plugin_map_finalize(GObject *gobject)
205 g_debug("GritsPluginMap: finalize");
206 GritsPluginMap *map = GRITS_PLUGIN_MAP(gobject);
208 grits_tms_free(map->tms);
209 //grits_wms_free(map->wms);
210 grits_tile_free(map->tiles, NULL, map);
211 G_OBJECT_CLASS(grits_plugin_map_parent_class)->finalize(gobject);
214 static void grits_plugin_map_class_init(GritsPluginMapClass *klass)
216 g_debug("GritsPluginMap: class_init");
217 GObjectClass *gobject_class = (GObjectClass*)klass;
218 gobject_class->dispose = grits_plugin_map_dispose;
219 gobject_class->finalize = grits_plugin_map_finalize;