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 const guchar colormap[][2][4] = {
31 {{0x73, 0x91, 0xad}, {0x73, 0x91, 0xad, 0x20}}, // Oceans
32 {{0xf6, 0xee, 0xee}, {0xf6, 0xee, 0xee, 0x00}}, // Ground
33 {{0xff, 0xff, 0xff}, {0xff, 0xff, 0xff, 0xff}}, // Borders
34 {{0x73, 0x93, 0xad}, {0x73, 0x93, 0xad, 0x40}}, // Lakes
37 struct _LoadTileData {
43 static gboolean _load_tile_cb(gpointer _data)
45 struct _LoadTileData *data = _data;
46 GisPluginMap *self = data->self;
47 GisTile *tile = data->tile;
48 GdkPixbuf *pixbuf = data->pixbuf;
52 g_debug("GisPluginMap: _load_tile_cb start");
53 guchar *pixels = gdk_pixbuf_get_pixels(pixbuf);
54 gboolean alpha = gdk_pixbuf_get_has_alpha(pixbuf);
55 gint width = gdk_pixbuf_get_width(pixbuf);
56 gint height = gdk_pixbuf_get_height(pixbuf);
58 for (int i = 0; i < width*height; i++) {
59 for (int j = 0; j < G_N_ELEMENTS(colormap); j++) {
60 if (pixels[i*4+0] == colormap[j][0][0] &&
61 pixels[i*4+1] == colormap[j][0][1] &&
62 pixels[i*4+2] == colormap[j][0][2]) {
63 pixels[i*4+0] = colormap[j][1][0];
64 pixels[i*4+1] = colormap[j][1][1];
65 pixels[i*4+2] = colormap[j][1][2];
66 pixels[i*4+3] = colormap[j][1][3];
72 guint *tex = g_new0(guint, 1);
73 gis_viewer_begin(self->viewer);
74 glGenTextures(1, tex);
75 glBindTexture(GL_TEXTURE_2D, *tex);
77 glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
78 glPixelStorei(GL_PACK_ALIGNMENT, 1);
79 glTexImage2D(GL_TEXTURE_2D, 0, 4, width, height, 0,
80 (alpha ? GL_RGBA : GL_RGB), GL_UNSIGNED_BYTE, pixels);
81 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
82 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
83 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER);
84 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER);
86 gis_viewer_end(self->viewer);
89 gtk_widget_queue_draw(GTK_WIDGET(self->viewer));
90 g_object_unref(pixbuf);
94 static void _load_tile(GisTile *tile, gpointer _self)
96 GisPluginMap *self = _self;
97 g_debug("GisPluginMap: _load_tile start %p", g_thread_self());
98 char *path = gis_wms_make_local(self->wms, tile);
99 struct _LoadTileData *data = g_new0(struct _LoadTileData, 1);
102 data->pixbuf = gdk_pixbuf_new_from_file(path, NULL);
104 g_idle_add_full(G_PRIORITY_LOW, _load_tile_cb, data, NULL);
106 g_warning("GisPluginMap: _load_tile - Error loading pixbuf %s", path);
110 g_debug("GisPluginMap: _load_tile end %p", g_thread_self());
113 static gboolean _free_tile_cb(gpointer data)
115 glDeleteTextures(1, data);
119 static void _free_tile(GisTile *tile, gpointer _self)
121 GisPluginMap *self = _self;
122 g_debug("GisPluginMap: _free_tile: %p=%d", tile->data, *(guint*)tile->data);
123 g_idle_add_full(G_PRIORITY_LOW, _free_tile_cb, tile->data, NULL);
126 static gpointer _update_tiles(gpointer _self)
128 g_debug("GisPluginMap: _update_tiles");
129 GisPluginMap *self = _self;
130 g_mutex_lock(self->mutex);
131 gdouble lat, lon, elev;
132 gis_viewer_get_location(self->viewer, &lat, &lon, &elev);
133 gis_tile_update(self->tiles,
134 MAX_RESOLUTION, TILE_WIDTH, TILE_WIDTH,
137 gis_tile_gc(self->tiles, time(NULL)-10,
139 g_mutex_unlock(self->mutex);
146 static void _on_location_changed(GisViewer *viewer,
147 gdouble lat, gdouble lon, gdouble elev, GisPluginMap *self)
149 g_thread_create(_update_tiles, self, FALSE, NULL);
152 static gpointer _expose(GisCallback *callback, gpointer _self)
154 GisPluginMap *self = GIS_PLUGIN_MAP(_self);
155 g_debug("GisPluginMap: expose viewer=%p tiles=%p,%p",
156 self->viewer, self->tiles, self->tiles->data);
157 gis_viewer_render_tiles(self->viewer, self->tiles);
164 GisPluginMap *gis_plugin_map_new(GisViewer *viewer)
166 g_debug("GisPluginMap: new");
167 GisPluginMap *self = g_object_new(GIS_TYPE_PLUGIN_MAP, NULL);
168 self->viewer = g_object_ref(viewer);
170 /* Load initial tiles */
171 _load_tile(self->tiles, self);
172 g_thread_create(_update_tiles, self, FALSE, NULL);
174 /* Connect signals */
175 self->sigid = g_signal_connect(self->viewer, "location-changed",
176 G_CALLBACK(_on_location_changed), self);
179 GisCallback *callback = gis_callback_new(_expose, self);
180 gis_viewer_add(viewer, GIS_OBJECT(callback), GIS_LEVEL_OVERLAY, 0);
190 static void gis_plugin_map_plugin_init(GisPluginInterface *iface);
191 G_DEFINE_TYPE_WITH_CODE(GisPluginMap, gis_plugin_map, G_TYPE_OBJECT,
192 G_IMPLEMENT_INTERFACE(GIS_TYPE_PLUGIN,
193 gis_plugin_map_plugin_init));
194 static void gis_plugin_map_plugin_init(GisPluginInterface *iface)
196 g_debug("GisPluginMap: plugin_init");
197 /* Add methods to the interface */
199 /* Class/Object init */
200 static void gis_plugin_map_init(GisPluginMap *self)
202 g_debug("GisPluginMap: init");
204 self->mutex = g_mutex_new();
205 self->tiles = gis_tile_new(NULL, NORTH, SOUTH, EAST, WEST);
206 self->wms = gis_wms_new(
207 "http://labs.metacarta.com/wms/vmap0", "basic", "image/png",
208 "osm/", "png", TILE_WIDTH, TILE_HEIGHT);
210 static void gis_plugin_map_dispose(GObject *gobject)
212 g_debug("GisPluginMap: dispose");
213 GisPluginMap *self = GIS_PLUGIN_MAP(gobject);
214 /* Drop references */
216 g_signal_handler_disconnect(self->viewer, self->sigid);
217 g_object_unref(self->viewer);
220 G_OBJECT_CLASS(gis_plugin_map_parent_class)->dispose(gobject);
222 static void gis_plugin_map_finalize(GObject *gobject)
224 g_debug("GisPluginMap: finalize");
225 GisPluginMap *self = GIS_PLUGIN_MAP(gobject);
227 gis_tile_free(self->tiles, _free_tile, self);
228 gis_wms_free(self->wms);
229 g_mutex_free(self->mutex);
230 G_OBJECT_CLASS(gis_plugin_map_parent_class)->finalize(gobject);
233 static void gis_plugin_map_class_init(GisPluginMapClass *klass)
235 g_debug("GisPluginMap: class_init");
236 GObjectClass *gobject_class = (GObjectClass*)klass;
237 gobject_class->dispose = gis_plugin_map_dispose;
238 gobject_class->finalize = gis_plugin_map_finalize;