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/>.
21 #include <gdk/gdkkeysyms.h>
23 #include "gis-marshal.h"
24 #include "gis-viewer.h"
38 static guint signals[NUM_SIGNALS];
45 static void _gis_viewer_fix_location(GisViewer *self)
47 while (self->location[0] < -90) self->location[0] += 180;
48 while (self->location[0] > 90) self->location[0] -= 180;
49 while (self->location[1] < -180) self->location[1] += 360;
50 while (self->location[1] > 180) self->location[1] -= 360;
51 self->location[2] = ABS(self->location[2]);
55 static void _gis_viewer_emit_location_changed(GisViewer *self)
57 g_signal_emit(self, signals[SIG_LOCATION_CHANGED], 0,
62 static void _gis_viewer_emit_rotation_changed(GisViewer *self)
64 g_signal_emit(self, signals[SIG_ROTATION_CHANGED], 0,
69 static void _gis_viewer_emit_time_changed(GisViewer *self)
71 g_signal_emit(self, signals[SIG_TIME_CHANGED], 0,
74 static void _gis_viewer_emit_refresh(GisViewer *self)
76 g_signal_emit(self, signals[SIG_REFRESH], 0);
78 static void _gis_viewer_emit_offline(GisViewer *self)
80 g_signal_emit(self, signals[SIG_OFFLINE], 0,
87 static gboolean on_key_press(GisViewer *self, GdkEventKey *event, gpointer _)
89 g_debug("GisViewer: on_key_press - key=%x, state=%x, plus=%x",
90 event->keyval, event->state, GDK_plus);
92 double lat, lon, elev, pan;
93 gis_viewer_get_location(self, &lat, &lon, &elev);
94 pan = MIN(elev/(EARTH_R/2), 30);
95 guint kv = event->keyval;
97 if (kv == GDK_Left || kv == GDK_h) gis_viewer_pan(self, 0, -pan, 0);
98 else if (kv == GDK_Down || kv == GDK_j) gis_viewer_pan(self, -pan, 0, 0);
99 else if (kv == GDK_Up || kv == GDK_k) gis_viewer_pan(self, pan, 0, 0);
100 else if (kv == GDK_Right || kv == GDK_l) gis_viewer_pan(self, 0, pan, 0);
101 else if (kv == GDK_minus || kv == GDK_o) gis_viewer_zoom(self, 10./9);
102 else if (kv == GDK_plus || kv == GDK_i) gis_viewer_zoom(self, 9./10);
103 else if (kv == GDK_H) gis_viewer_rotate(self, 0, 0, -2);
104 else if (kv == GDK_J) gis_viewer_rotate(self, 2, 0, 0);
105 else if (kv == GDK_K) gis_viewer_rotate(self, -2, 0, 0);
106 else if (kv == GDK_L) gis_viewer_rotate(self, 0, 0, 2);
117 static gboolean on_button_press(GisViewer *self, GdkEventButton *event, gpointer _)
119 g_debug("GisViewer: on_button_press - %d", event->button);
120 gtk_widget_grab_focus(GTK_WIDGET(self));
121 switch (event->button) {
122 case 1: self->drag_mode = GIS_DRAG_PAN; break;
123 case 2: self->drag_mode = GIS_DRAG_ZOOM; break;
124 case 3: self->drag_mode = GIS_DRAG_TILT; break;
125 defualt: self->drag_mode = GIS_DRAG_NONE; break;
127 self->drag_x = event->x;
128 self->drag_y = event->y;
132 static gboolean on_button_release(GisViewer *self, GdkEventButton *event, gpointer _)
134 g_debug("GisViewer: on_button_release");
135 self->drag_mode = GIS_DRAG_NONE;
139 static gboolean on_motion_notify(GisViewer *self, GdkEventMotion *event, gpointer _)
141 gdouble x_dist = self->drag_x - event->x;
142 gdouble y_dist = self->drag_y - event->y;
143 gdouble lat, lon, elev, scale;
144 gis_viewer_get_location(GIS_VIEWER(self), &lat, &lon, &elev);
145 scale = elev/EARTH_R/15;
146 switch (self->drag_mode) {
148 gis_viewer_pan(self, -y_dist*scale, x_dist*scale, 0);
151 gis_viewer_zoom(self, pow(2, -y_dist/500));
154 gis_viewer_rotate(self, y_dist/10, 0, x_dist/10);
157 self->drag_x = event->x;
158 self->drag_y = event->y;
162 static void on_view_changed(GisViewer *self,
163 gdouble _1, gdouble _2, gdouble _3)
165 gtk_widget_queue_draw(GTK_WIDGET(self));
171 void gis_viewer_setup(GisViewer *self, GisPlugins *plugins, GisPrefs *prefs)
173 self->plugins = plugins;
175 self->offline = gis_prefs_get_boolean(prefs, "gis/offline", NULL);
178 void gis_viewer_set_time(GisViewer *self, const char *time)
180 g_assert(GIS_IS_VIEWER(self));
181 g_debug("GisViewer: set_time - time=%s", time);
183 self->time = g_strdup(time);
184 _gis_viewer_emit_time_changed(self);
187 gchar *gis_viewer_get_time(GisViewer *self)
189 g_assert(GIS_IS_VIEWER(self));
190 g_debug("GisViewer: get_time");
194 void gis_viewer_set_location(GisViewer *self, gdouble lat, gdouble lon, gdouble elev)
196 g_assert(GIS_IS_VIEWER(self));
197 g_debug("GisViewer: set_location");
198 self->location[0] = lat;
199 self->location[1] = lon;
200 self->location[2] = elev;
201 _gis_viewer_fix_location(self);
202 _gis_viewer_emit_location_changed(self);
205 void gis_viewer_get_location(GisViewer *self, gdouble *lat, gdouble *lon, gdouble *elev)
207 g_assert(GIS_IS_VIEWER(self));
208 //g_debug("GisViewer: get_location");
209 *lat = self->location[0];
210 *lon = self->location[1];
211 *elev = self->location[2];
214 void gis_viewer_pan(GisViewer *self, gdouble lat, gdouble lon, gdouble elev)
216 g_assert(GIS_IS_VIEWER(self));
217 g_debug("GisViewer: pan - lat=%8.3f, lon=%8.3f, elev=%8.3f", lat, lon, elev);
218 self->location[0] += lat;
219 self->location[1] += lon;
220 self->location[2] += elev;
221 _gis_viewer_fix_location(self);
222 _gis_viewer_emit_location_changed(self);
225 void gis_viewer_zoom(GisViewer *self, gdouble scale)
227 g_assert(GIS_IS_VIEWER(self));
228 g_debug("GisViewer: zoom");
229 self->location[2] *= scale;
230 _gis_viewer_emit_location_changed(self);
233 void gis_viewer_set_rotation(GisViewer *self, gdouble x, gdouble y, gdouble z)
235 g_assert(GIS_IS_VIEWER(self));
236 g_debug("GisViewer: set_rotation");
237 self->rotation[0] = x;
238 self->rotation[1] = y;
239 self->rotation[2] = z;
240 _gis_viewer_emit_rotation_changed(self);
243 void gis_viewer_get_rotation(GisViewer *self, gdouble *x, gdouble *y, gdouble *z)
245 g_assert(GIS_IS_VIEWER(self));
246 g_debug("GisViewer: get_rotation");
247 *x = self->rotation[0];
248 *y = self->rotation[1];
249 *z = self->rotation[2];
252 void gis_viewer_rotate(GisViewer *self, gdouble x, gdouble y, gdouble z)
254 g_assert(GIS_IS_VIEWER(self));
255 g_debug("GisViewer: rotate - x=%.0f, y=%.0f, z=%.0f", x, y, z);
256 self->rotation[0] += x;
257 self->rotation[1] += y;
258 self->rotation[2] += z;
259 _gis_viewer_emit_rotation_changed(self);
262 void gis_viewer_refresh(GisViewer *self)
264 g_debug("GisViewer: refresh");
265 _gis_viewer_emit_refresh(self);
268 void gis_viewer_set_offline(GisViewer *self, gboolean offline)
270 g_assert(GIS_IS_VIEWER(self));
271 g_debug("GisViewer: set_offline - %d", offline);
272 gis_prefs_set_boolean(self->prefs, "gis/offline", offline);
273 self->offline = offline;
274 _gis_viewer_emit_offline(self);
277 gboolean gis_viewer_get_offline(GisViewer *self)
279 g_assert(GIS_IS_VIEWER(self));
280 g_debug("GisViewer: get_offline - %d", self->offline);
281 return self->offline;
284 /* To be implemented by subclasses */
285 void gis_viewer_center_position(GisViewer *self,
286 gdouble lat, gdouble lon, gdouble elev)
288 GisViewerClass *klass = GIS_VIEWER_GET_CLASS(self);
289 if (!klass->center_position)
290 g_warning("GisViewer: center_position - Unimplemented");
291 klass->center_position(self, lat, lon, elev);
294 void gis_viewer_project(GisViewer *self,
295 gdouble lat, gdouble lon, gdouble elev,
296 gdouble *px, gdouble *py, gdouble *pz)
298 GisViewerClass *klass = GIS_VIEWER_GET_CLASS(self);
300 g_warning("GisViewer: project - Unimplemented");
301 klass->project(self, lat, lon, elev, px, py, pz);
304 void gis_viewer_clear_height_func(GisViewer *self)
306 GisViewerClass *klass = GIS_VIEWER_GET_CLASS(self);
307 if (!klass->clear_height_func)
308 g_warning("GisViewer: clear_height_func - Unimplemented");
309 klass->clear_height_func(self);
312 void gis_viewer_set_height_func(GisViewer *self, GisTile *tile,
313 GisHeightFunc height_func, gpointer user_data,
316 GisViewerClass *klass = GIS_VIEWER_GET_CLASS(self);
317 if (!klass->set_height_func)
318 g_warning("GisViewer: set_height_func - Unimplemented");
319 klass->set_height_func(self, tile, height_func, user_data, update);
322 gpointer gis_viewer_add(GisViewer *self, GisObject *object,
323 gint level, gboolean sort)
325 GisViewerClass *klass = GIS_VIEWER_GET_CLASS(self);
327 g_warning("GisViewer: add - Unimplemented");
328 return klass->add(self, object, level, sort);
331 GisObject *gis_viewer_remove(GisViewer *self, gpointer ref)
333 GisViewerClass *klass = GIS_VIEWER_GET_CLASS(self);
335 g_warning("GisViewer: remove - Unimplemented");
336 return klass->remove(self, ref);
342 G_DEFINE_ABSTRACT_TYPE(GisViewer, gis_viewer, GTK_TYPE_DRAWING_AREA);
343 static void gis_viewer_init(GisViewer *self)
345 g_debug("GisViewer: init");
347 self->time = g_strdup("");
348 self->location[0] = 40;
349 self->location[1] = -100;
350 self->location[2] = 1.5*EARTH_R;
351 self->rotation[0] = 0;
352 self->rotation[1] = 0;
353 self->rotation[2] = 0;
355 g_object_set(self, "can-focus", TRUE, NULL);
356 gtk_widget_add_events(GTK_WIDGET(self),
357 GDK_BUTTON_PRESS_MASK |
358 GDK_BUTTON_RELEASE_MASK |
359 GDK_POINTER_MOTION_MASK |
362 g_signal_connect(self, "key-press-event", G_CALLBACK(on_key_press), NULL);
364 g_signal_connect(self, "button-press-event", G_CALLBACK(on_button_press), NULL);
365 g_signal_connect(self, "button-release-event", G_CALLBACK(on_button_release), NULL);
366 g_signal_connect(self, "motion-notify-event", G_CALLBACK(on_motion_notify), NULL);
368 g_signal_connect(self, "location-changed", G_CALLBACK(on_view_changed), NULL);
369 g_signal_connect(self, "rotation-changed", G_CALLBACK(on_view_changed), NULL);
371 static void gis_viewer_finalize(GObject *gobject)
373 g_debug("GisViewer: finalize");
374 GisViewer *self = GIS_VIEWER(gobject);
376 G_OBJECT_CLASS(gis_viewer_parent_class)->finalize(gobject);
378 static void gis_viewer_class_init(GisViewerClass *klass)
380 g_debug("GisViewer: class_init");
381 GObjectClass *gobject_class = G_OBJECT_CLASS(klass);
382 gobject_class->finalize = gis_viewer_finalize;
383 signals[SIG_TIME_CHANGED] = g_signal_new(
385 G_TYPE_FROM_CLASS(gobject_class),
390 g_cclosure_marshal_VOID__STRING,
394 signals[SIG_LOCATION_CHANGED] = g_signal_new(
396 G_TYPE_FROM_CLASS(gobject_class),
401 gis_cclosure_marshal_VOID__DOUBLE_DOUBLE_DOUBLE,
407 signals[SIG_ROTATION_CHANGED] = g_signal_new(
409 G_TYPE_FROM_CLASS(gobject_class),
414 gis_cclosure_marshal_VOID__DOUBLE_DOUBLE_DOUBLE,
420 signals[SIG_REFRESH] = g_signal_new(
422 G_TYPE_FROM_CLASS(gobject_class),
427 g_cclosure_marshal_VOID__VOID,
430 signals[SIG_OFFLINE] = g_signal_new(
432 G_TYPE_FROM_CLASS(gobject_class),
437 g_cclosure_marshal_VOID__BOOLEAN,