2 * Copyright (C) 2009-2010 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/>.
19 #include <glib/gstdio.h>
26 #define MAX_RESOLUTION 500
27 #define TILE_WIDTH 1024
28 #define TILE_HEIGHT 512
30 struct _LoadTileData {
35 static gboolean _load_tile_cb(gpointer _data)
37 struct _LoadTileData *data = _data;
38 GisPluginMap *self = data->self;
39 GisTile *tile = data->tile;
40 GdkPixbuf *pixbuf = data->pixbuf;
44 g_debug("GisPluginMap: _load_tile_cb start");
45 guchar *pixels = gdk_pixbuf_get_pixels(pixbuf);
46 gboolean alpha = gdk_pixbuf_get_has_alpha(pixbuf);
47 gint width = gdk_pixbuf_get_width(pixbuf);
48 gint height = gdk_pixbuf_get_height(pixbuf);
50 guint *tex = g_new0(guint, 1);
51 gis_viewer_begin(self->viewer);
52 glGenTextures(1, tex);
53 glBindTexture(GL_TEXTURE_2D, *tex);
55 glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
56 glPixelStorei(GL_PACK_ALIGNMENT, 1);
57 glTexImage2D(GL_TEXTURE_2D, 0, 4, width, height, 0,
58 (alpha ? GL_RGBA : GL_RGB), GL_UNSIGNED_BYTE, pixels);
59 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
60 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
61 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER);
62 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER);
64 gis_viewer_end(self->viewer);
67 gtk_widget_queue_draw(GTK_WIDGET(self->viewer));
68 g_object_unref(pixbuf);
72 static void _load_tile(GisTile *tile, gpointer _self)
74 GisPluginMap *self = _self;
75 g_debug("GisPluginMap: _load_tile start %p", g_thread_self());
76 char *path = gis_wms_make_local(self->wms, tile);
77 struct _LoadTileData *data = g_new0(struct _LoadTileData, 1);
80 data->pixbuf = gdk_pixbuf_new_from_file(path, NULL);
82 g_idle_add_full(G_PRIORITY_LOW, _load_tile_cb, data, NULL);
84 g_warning("GisPluginMap: _load_tile - Error loading pixbuf %s", path);
88 g_debug("GisPluginMap: _load_tile end %p", g_thread_self());
91 static gboolean _free_tile_cb(gpointer data)
93 glDeleteTextures(1, data);
97 static void _free_tile(GisTile *tile, gpointer _self)
99 GisPluginMap *self = _self;
100 g_debug("GisPluginMap: _free_tile: %p=%d", tile->data, *(guint*)tile->data);
101 g_idle_add_full(G_PRIORITY_LOW, _free_tile_cb, tile->data, NULL);
104 static gpointer _update_tiles(gpointer _self)
106 g_debug("GisPluginMap: _update_tiles");
107 GisPluginMap *self = _self;
108 g_mutex_lock(self->mutex);
109 gdouble lat, lon, elev;
110 gis_viewer_get_location(self->viewer, &lat, &lon, &elev);
111 gis_tile_update(self->tiles,
112 MAX_RESOLUTION, TILE_WIDTH, TILE_WIDTH,
115 gis_tile_gc(self->tiles, time(NULL)-10,
117 g_mutex_unlock(self->mutex);
124 static void _on_location_changed(GisViewer *viewer,
125 gdouble lat, gdouble lon, gdouble elev, GisPluginMap *self)
127 g_thread_create(_update_tiles, self, FALSE, NULL);
130 static gpointer _expose(GisCallback *callback, gpointer _self)
132 GisPluginMap *self = GIS_PLUGIN_MAP(_self);
133 g_debug("GisPluginMap: expose viewer=%p tiles=%p,%p",
134 self->viewer, self->tiles, self->tiles->data);
135 gis_viewer_render_tiles(self->viewer, self->tiles);
142 GisPluginMap *gis_plugin_map_new(GisViewer *viewer)
144 g_debug("GisPluginMap: new");
145 GisPluginMap *self = g_object_new(GIS_TYPE_PLUGIN_MAP, NULL);
146 self->viewer = g_object_ref(viewer);
148 /* Load initial tiles */
149 _load_tile(self->tiles, self);
150 g_thread_create(_update_tiles, self, FALSE, NULL);
152 /* Connect signals */
153 self->sigid = g_signal_connect(self->viewer, "location-changed",
154 G_CALLBACK(_on_location_changed), self);
157 GisCallback *callback = gis_callback_new(_expose, self);
158 gis_viewer_add(viewer, GIS_OBJECT(callback), GIS_LEVEL_WORLD, 0);
168 static void gis_plugin_map_plugin_init(GisPluginInterface *iface);
169 G_DEFINE_TYPE_WITH_CODE(GisPluginMap, gis_plugin_map, G_TYPE_OBJECT,
170 G_IMPLEMENT_INTERFACE(GIS_TYPE_PLUGIN,
171 gis_plugin_map_plugin_init));
172 static void gis_plugin_map_plugin_init(GisPluginInterface *iface)
174 g_debug("GisPluginMap: plugin_init");
175 /* Add methods to the interface */
177 /* Class/Object init */
178 static void gis_plugin_map_init(GisPluginMap *self)
180 g_debug("GisPluginMap: init");
182 self->mutex = g_mutex_new();
183 self->tiles = gis_tile_new(NULL, NORTH, SOUTH, EAST, WEST);
184 self->wms = gis_wms_new(
185 "http://labs.metacarta.com/wms/vmap0", "basic", "image/png",
186 "osm/", "png", TILE_WIDTH, TILE_HEIGHT);
188 static void gis_plugin_map_dispose(GObject *gobject)
190 g_debug("GisPluginMap: dispose");
191 GisPluginMap *self = GIS_PLUGIN_MAP(gobject);
192 /* Drop references */
194 g_signal_handler_disconnect(self->viewer, self->sigid);
195 g_object_unref(self->viewer);
198 G_OBJECT_CLASS(gis_plugin_map_parent_class)->dispose(gobject);
200 static void gis_plugin_map_finalize(GObject *gobject)
202 g_debug("GisPluginMap: finalize");
203 GisPluginMap *self = GIS_PLUGIN_MAP(gobject);
205 gis_tile_free(self->tiles, _free_tile, self);
206 gis_wms_free(self->wms);
207 g_mutex_free(self->mutex);
208 G_OBJECT_CLASS(gis_plugin_map_parent_class)->finalize(gobject);
211 static void gis_plugin_map_class_init(GisPluginMapClass *klass)
213 g_debug("GisPluginMap: class_init");
214 GObjectClass *gobject_class = (GObjectClass*)klass;
215 gobject_class->dispose = gis_plugin_map_dispose;
216 gobject_class->finalize = gis_plugin_map_finalize;