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
36 //#define MAX_RESOLUTION 100
37 //#define TILE_WIDTH 1024
38 //#define TILE_HEIGHT 512
40 static const guchar colormap[][2][4] = {
41 //{{0x73, 0x91, 0xad}, {0x73, 0x91, 0xad, 0x00}}, // Oceans
42 //{{0xf6, 0xee, 0xee}, {0xf6, 0xee, 0xee, 0x00}}, // Ground
43 //{{0xff, 0xff, 0xff}, {0xff, 0xff, 0xff, 0xff}}, // Borders
44 //{{0x73, 0x93, 0xad}, {0x73, 0x93, 0xad, 0x40}}, // Lakes
45 //{{0xff, 0xe1, 0x80}, {0xff, 0xe1, 0x80, 0x60}}, // Cities
48 struct _LoadTileData {
56 static gboolean _load_tile_cb(gpointer _data)
58 struct _LoadTileData *data = _data;
59 g_debug("GritsPluginMap: _load_tile_cb start");
61 guint *tex = g_new0(guint, 1);
62 glGenTextures(1, tex);
63 glBindTexture(GL_TEXTURE_2D, *tex);
65 glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
66 glPixelStorei(GL_PACK_ALIGNMENT, 1);
67 glTexImage2D(GL_TEXTURE_2D, 0, 4, data->width, data->height, 0,
68 (data->alpha ? GL_RGBA : GL_RGB), GL_UNSIGNED_BYTE, data->pixels);
69 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
70 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
71 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
72 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
75 data->tile->data = tex;
76 gtk_widget_queue_draw(GTK_WIDGET(data->map->viewer));
82 static void _load_tile(GritsTile *tile, gpointer _map)
84 GritsPluginMap *map = _map;
85 g_debug("GritsPluginMap: _load_tile start %p", g_thread_self());
87 g_debug("GritsPluginMap: _load_tile - aborted");
92 gchar *path = grits_tms_fetch(map->tms, tile, GRITS_ONCE, NULL, NULL);
93 //gchar *path = grits_wms_fetch(map->wms, tile, GRITS_ONCE, NULL, NULL);
94 if (!path) return; // Canceled/error
97 GdkPixbuf *pixbuf = gdk_pixbuf_new_from_file(path, NULL);
99 g_warning("GritsPluginMap: _load_tile - Error loading pixbuf %s", path);
106 /* Copy pixbuf data for callback */
107 struct _LoadTileData *data = g_new0(struct _LoadTileData, 1);
110 data->pixels = gdk_pixbuf_get_pixels(pixbuf);
111 data->alpha = gdk_pixbuf_get_has_alpha(pixbuf);
112 data->width = gdk_pixbuf_get_width(pixbuf);
113 data->height = gdk_pixbuf_get_height(pixbuf);
114 data->pixels = g_memdup(data->pixels,
115 data->width * data->height * (data->alpha ? 4 : 3));
116 g_object_unref(pixbuf);
118 /* Map texture colors, if needed */
119 for (int i = 0; i < data->width * data->height; i++) {
120 for (int j = 0; j < G_N_ELEMENTS(colormap); j++) {
121 if (data->pixels[i*4+0] == colormap[j][0][0] &&
122 data->pixels[i*4+1] == colormap[j][0][1] &&
123 data->pixels[i*4+2] == colormap[j][0][2]) {
124 data->pixels[i*4+0] = colormap[j][1][0];
125 data->pixels[i*4+1] = colormap[j][1][1];
126 data->pixels[i*4+2] = colormap[j][1][2];
127 data->pixels[i*4+3] = colormap[j][1][3];
133 /* Load the GL texture from the main thread */
134 g_idle_add_full(G_PRIORITY_LOW, _load_tile_cb, data, NULL);
135 g_debug("GritsPluginMap: _load_tile end %p", g_thread_self());
138 static gboolean _free_tile_cb(gpointer data)
140 glDeleteTextures(1, data);
144 static void _free_tile(GritsTile *tile, gpointer _map)
147 g_debug("GritsPluginMap: _free_tile: %p", tile->data);
148 g_idle_add_full(G_PRIORITY_LOW, _free_tile_cb, tile->data, NULL);
152 static void _update_tiles(gpointer _, gpointer _map)
154 g_debug("GritsPluginMap: _update_tiles");
155 GritsPluginMap *map = _map;
157 grits_viewer_get_location(map->viewer, &eye.lat, &eye.lon, &eye.elev);
158 grits_tile_update(map->tiles, &eye,
159 MAX_RESOLUTION, TILE_WIDTH, TILE_WIDTH,
161 grits_tile_gc(map->tiles, time(NULL)-10,
168 static void _on_location_changed(GritsViewer *viewer,
169 gdouble lat, gdouble lon, gdouble elev, GritsPluginMap *map)
171 g_thread_pool_push(map->threads, NULL+1, NULL);
178 * grits_plugin_map_new:
179 * @viewer: the #GritsViewer to use for drawing
181 * Create a new instance of the map plugin.
183 * Returns: the new #GritsPluginMap
185 GritsPluginMap *grits_plugin_map_new(GritsViewer *viewer)
187 g_debug("GritsPluginMap: new");
188 GritsPluginMap *map = g_object_new(GRITS_TYPE_PLUGIN_MAP, NULL);
189 map->viewer = g_object_ref(viewer);
191 /* Load initial tiles */
192 _update_tiles(NULL, map);
194 /* Connect signals */
195 map->sigid = g_signal_connect(map->viewer, "location-changed",
196 G_CALLBACK(_on_location_changed), map);
199 grits_viewer_add(viewer, GRITS_OBJECT(map->tiles), GRITS_LEVEL_WORLD, FALSE);
209 static void grits_plugin_map_plugin_init(GritsPluginInterface *iface);
210 G_DEFINE_TYPE_WITH_CODE(GritsPluginMap, grits_plugin_map, G_TYPE_OBJECT,
211 G_IMPLEMENT_INTERFACE(GRITS_TYPE_PLUGIN,
212 grits_plugin_map_plugin_init));
213 static void grits_plugin_map_plugin_init(GritsPluginInterface *iface)
215 g_debug("GritsPluginMap: plugin_init");
216 /* Add methods to the interface */
218 /* Class/Object init */
219 static void grits_plugin_map_init(GritsPluginMap *map)
221 g_debug("GritsPluginMap: init");
223 map->threads = g_thread_pool_new(_update_tiles, map, 1, FALSE, NULL);
224 map->tiles = grits_tile_new(NULL, 85.0511, -85.0511, EAST, WEST);
225 map->tms = grits_tms_new("http://tile.openstreetmap.org",
227 map->tiles->proj = GRITS_PROJ_MERCATOR;
228 //map->tiles = grits_tile_new(NULL, NORTH, SOUTH, EAST, WEST);
229 //map->wms = grits_wms_new(
230 // "http://vmap0.tiles.osgeo.org/wms/vmap0",
231 // "basic,priroad,secroad,depthcontour,clabel,statelabel",
232 // "image/png", "osm/", "png", TILE_WIDTH, TILE_HEIGHT);
233 g_object_ref(map->tiles);
235 static void grits_plugin_map_dispose(GObject *gobject)
237 g_debug("GritsPluginMap: dispose");
238 GritsPluginMap *map = GRITS_PLUGIN_MAP(gobject);
240 /* Drop references */
242 GritsViewer *viewer = map->viewer;
244 g_signal_handler_disconnect(viewer, map->sigid);
245 grits_viewer_remove(viewer, GRITS_OBJECT(map->tiles));
246 soup_session_abort(map->tms->http->soup);
247 //soup_session_abort(map->wms->http->soup);
248 g_thread_pool_free(map->threads, TRUE, TRUE);
249 while (gtk_events_pending())
250 gtk_main_iteration();
251 g_object_unref(viewer);
253 G_OBJECT_CLASS(grits_plugin_map_parent_class)->dispose(gobject);
255 static void grits_plugin_map_finalize(GObject *gobject)
257 g_debug("GritsPluginMap: finalize");
258 GritsPluginMap *map = GRITS_PLUGIN_MAP(gobject);
260 grits_tms_free(map->tms);
261 //grits_wms_free(map->wms);
262 grits_tile_free(map->tiles, _free_tile, map);
263 G_OBJECT_CLASS(grits_plugin_map_parent_class)->finalize(gobject);
266 static void grits_plugin_map_class_init(GritsPluginMapClass *klass)
268 g_debug("GritsPluginMap: class_init");
269 GObjectClass *gobject_class = (GObjectClass*)klass;
270 gobject_class->dispose = grits_plugin_map_dispose;
271 gobject_class->finalize = grits_plugin_map_finalize;