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");
60 if (data->map->aborted) {
61 g_debug("GritsPluginMap: _load_tile - aborted");
65 guint *tex = g_new0(guint, 1);
66 glGenTextures(1, tex);
67 glBindTexture(GL_TEXTURE_2D, *tex);
69 glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
70 glPixelStorei(GL_PACK_ALIGNMENT, 1);
71 glTexImage2D(GL_TEXTURE_2D, 0, 4, data->width, data->height, 0,
72 (data->alpha ? GL_RGBA : GL_RGB), GL_UNSIGNED_BYTE, data->pixels);
73 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
74 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
75 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
76 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
79 data->tile->data = tex;
80 if (data->map->viewer)
81 gtk_widget_queue_draw(GTK_WIDGET(data->map->viewer));
87 static void _load_tile(GritsTile *tile, gpointer _map)
89 GritsPluginMap *map = _map;
90 g_debug("GritsPluginMap: _load_tile start %p", g_thread_self());
92 g_debug("GritsPluginMap: _load_tile - aborted");
97 gchar *path = grits_tms_fetch(map->tms, tile, GRITS_ONCE, NULL, NULL);
98 //gchar *path = grits_wms_fetch(map->wms, tile, GRITS_ONCE, NULL, NULL);
99 if (!path) return; // Canceled/error
102 GdkPixbuf *pixbuf = gdk_pixbuf_new_from_file(path, NULL);
104 g_warning("GritsPluginMap: _load_tile - Error loading pixbuf %s", path);
111 /* Copy pixbuf data for callback */
112 struct _LoadTileData *data = g_new0(struct _LoadTileData, 1);
115 data->pixels = gdk_pixbuf_get_pixels(pixbuf);
116 data->alpha = gdk_pixbuf_get_has_alpha(pixbuf);
117 data->width = gdk_pixbuf_get_width(pixbuf);
118 data->height = gdk_pixbuf_get_height(pixbuf);
119 data->pixels = g_memdup(data->pixels,
120 data->width * data->height * (data->alpha ? 4 : 3));
121 g_object_unref(pixbuf);
123 /* Map texture colors, if needed */
124 for (int i = 0; i < data->width * data->height; i++) {
125 for (int j = 0; j < G_N_ELEMENTS(colormap); j++) {
126 if (data->pixels[i*4+0] == colormap[j][0][0] &&
127 data->pixels[i*4+1] == colormap[j][0][1] &&
128 data->pixels[i*4+2] == colormap[j][0][2]) {
129 data->pixels[i*4+0] = colormap[j][1][0];
130 data->pixels[i*4+1] = colormap[j][1][1];
131 data->pixels[i*4+2] = colormap[j][1][2];
132 data->pixels[i*4+3] = colormap[j][1][3];
138 /* Load the GL texture from the main thread */
139 g_idle_add_full(G_PRIORITY_LOW, _load_tile_cb, data, NULL);
140 g_debug("GritsPluginMap: _load_tile end %p", g_thread_self());
143 static gboolean _free_tile_cb(gpointer data)
145 glDeleteTextures(1, data);
149 static void _free_tile(GritsTile *tile, gpointer _map)
152 g_debug("GritsPluginMap: _free_tile: %p", tile->data);
153 g_idle_add_full(G_PRIORITY_LOW, _free_tile_cb, tile->data, NULL);
157 static void _update_tiles(gpointer _, gpointer _map)
159 g_debug("GritsPluginMap: _update_tiles");
160 GritsPluginMap *map = _map;
162 grits_viewer_get_location(map->viewer, &eye.lat, &eye.lon, &eye.elev);
163 grits_tile_update(map->tiles, &eye,
164 MAX_RESOLUTION, TILE_WIDTH, TILE_WIDTH,
166 grits_tile_gc(map->tiles, time(NULL)-10,
173 static void _on_location_changed(GritsViewer *viewer,
174 gdouble lat, gdouble lon, gdouble elev, GritsPluginMap *map)
176 g_thread_pool_push(map->threads, NULL+1, NULL);
183 * grits_plugin_map_new:
184 * @viewer: the #GritsViewer to use for drawing
186 * Create a new instance of the map plugin.
188 * Returns: the new #GritsPluginMap
190 GritsPluginMap *grits_plugin_map_new(GritsViewer *viewer)
192 g_debug("GritsPluginMap: new");
193 GritsPluginMap *map = g_object_new(GRITS_TYPE_PLUGIN_MAP, NULL);
194 map->viewer = g_object_ref(viewer);
196 /* Load initial tiles */
197 _update_tiles(NULL, map);
199 /* Connect signals */
200 map->sigid = g_signal_connect(map->viewer, "location-changed",
201 G_CALLBACK(_on_location_changed), map);
204 grits_viewer_add(viewer, GRITS_OBJECT(map->tiles), GRITS_LEVEL_WORLD, FALSE);
214 static void grits_plugin_map_plugin_init(GritsPluginInterface *iface);
215 G_DEFINE_TYPE_WITH_CODE(GritsPluginMap, grits_plugin_map, G_TYPE_OBJECT,
216 G_IMPLEMENT_INTERFACE(GRITS_TYPE_PLUGIN,
217 grits_plugin_map_plugin_init));
218 static void grits_plugin_map_plugin_init(GritsPluginInterface *iface)
220 g_debug("GritsPluginMap: plugin_init");
221 /* Add methods to the interface */
223 /* Class/Object init */
224 static void grits_plugin_map_init(GritsPluginMap *map)
226 g_debug("GritsPluginMap: init");
228 map->threads = g_thread_pool_new(_update_tiles, map, 1, FALSE, NULL);
229 map->tiles = grits_tile_new(NULL, 85.0511, -85.0511, EAST, WEST);
230 map->tms = grits_tms_new("http://tile.openstreetmap.org",
232 map->tiles->proj = GRITS_PROJ_MERCATOR;
233 //map->tiles = grits_tile_new(NULL, NORTH, SOUTH, EAST, WEST);
234 //map->wms = grits_wms_new(
235 // "http://vmap0.tiles.osgeo.org/wms/vmap0",
236 // "basic,priroad,secroad,depthcontour,clabel,statelabel",
237 // "image/png", "osm/", "png", TILE_WIDTH, TILE_HEIGHT);
238 g_object_ref(map->tiles);
240 static void grits_plugin_map_dispose(GObject *gobject)
242 g_debug("GritsPluginMap: dispose");
243 GritsPluginMap *map = GRITS_PLUGIN_MAP(gobject);
245 /* Drop references */
247 GritsViewer *viewer = map->viewer;
249 g_signal_handler_disconnect(viewer, map->sigid);
250 grits_viewer_remove(viewer, GRITS_OBJECT(map->tiles));
251 soup_session_abort(map->tms->http->soup);
252 //soup_session_abort(map->wms->http->soup);
253 g_thread_pool_free(map->threads, TRUE, TRUE);
254 while (gtk_events_pending())
255 gtk_main_iteration();
256 g_object_unref(viewer);
258 G_OBJECT_CLASS(grits_plugin_map_parent_class)->dispose(gobject);
260 static void grits_plugin_map_finalize(GObject *gobject)
262 g_debug("GritsPluginMap: finalize");
263 GritsPluginMap *map = GRITS_PLUGIN_MAP(gobject);
265 grits_tms_free(map->tms);
266 //grits_wms_free(map->wms);
267 grits_tile_free(map->tiles, _free_tile, map);
268 G_OBJECT_CLASS(grits_plugin_map_parent_class)->finalize(gobject);
271 static void grits_plugin_map_class_init(GritsPluginMapClass *klass)
273 g_debug("GritsPluginMap: class_init");
274 GObjectClass *gobject_class = (GObjectClass*)klass;
275 gobject_class->dispose = grits_plugin_map_dispose;
276 gobject_class->finalize = grits_plugin_map_finalize;