11 class mapWidget(gtk.Image):
15 gtk.Image.__init__(self)
17 # Maximum width should be 800, but actually gets reduced
18 self.win_x , self.win_y = 800 , 480
20 p = gtk.gdk.Pixbuf(gtk.gdk.COLORSPACE_RGB, True, 8, self.win_x, self.win_y)
21 self.set_from_pixbuf(p)
26 self.reftile_x , self.reftile_y = self.lon2tilex( lon , zoom ) , self.lat2tiley( lat , zoom )
28 # Half the size of a tile
29 self.refpix_x , self.refpix_y = 128 , 128
30 self.refpix_x , self.refpix_y = 0 , 0
32 self.composeMap( zoom )
34 def lon2tilex ( self , lon , zoom ) :
35 return int( ( lon + 180 ) / 360 * 2 ** zoom )
37 def lat2tiley ( self , lat , zoom ) :
38 lat = lat * math.pi / 180
39 return int( ( 1 - math.log( math.tan( lat ) + 1 / math.cos( lat ) ) / math.pi ) / 2 * 2 ** zoom )
41 def composeMap( self , zoom ) :
42 center_x , center_y = self.win_x / 2 , self.win_y / 2
44 # To get the central pixel in the window center, we must shift to the tile origin
45 center_x -= self.refpix_x
46 center_y -= self.refpix_y
48 # Ranges should be long enough as to fill the screen
49 # Maybe they should be decided based on self.win_x, self.win_y
50 for i in range(-3,4) :
51 for j in range(-3,4) :
52 file = self.tilename( i , j , zoom )
54 pixbuf = gtk.gdk.Pixbuf(gtk.gdk.COLORSPACE_RGB, False, 8, 256, 256 )
55 pixbuf.fill( 0x00000000 )
58 pixbuf = gtk.gdk.pixbuf_new_from_file( file )
59 except gobject.GError , ex :
60 print "Corrupted file %s" % ( file )
62 #file = self.tilename( self.reftile_x + i , self.reftile_y + j , zoom )
63 file = self.tilename( i , j , zoom )
65 pixbuf = gtk.gdk.pixbuf_new_from_file( file )
67 print "Total failure for tile for %s,%s" % ( self.reftile_x + i , self.reftile_y + j )
68 pixbuf = gtk.gdk.Pixbuf(gtk.gdk.COLORSPACE_RGB, False, 8, 256, 256 )
70 dest_x = 256 * i + center_x
71 dest_y = 256 * j + center_y
79 if dest_x + 256 > self.win_x :
80 size_x = self.win_x - dest_x
88 if dest_y + 256 > self.win_y :
89 size_y = self.win_y - dest_y
91 if ( size_x > 0 and size_y > 0 ) and ( init_x < 256 and init_y < 256 ) :
92 pixbuf.copy_area( init_x, init_y, size_x, size_y, self.get_pixbuf(), dest_x , dest_y )
95 def tilename ( self , x , y , zoom ) :
96 file = self.tile2file( self.reftile_x + x , self.reftile_y + y , zoom )
103 # useful members : response.code, response.headers
104 response = urllib2.urlopen( "http://tile.openstreetmap.org/%s/%s/%s.png" % ( zoom , x , y ) )
105 if response.geturl() == "http://tile.openstreetmap.org/11/0/0.png" :
107 fd = open( file , 'w' )
108 fd.write( response.read() )
116 def tile2file( self , tilex , tiley , zoom ) :
117 basedir = "/home/user/MyDocs/.maps/OpenStreetMap I"
118 rootdir = "%s/%s" % ( basedir , zoom )
119 if not os.path.isdir( rootdir ) :
121 rootsubdir = "%s/%s" % ( rootdir , tilex )
122 if not os.path.isdir( rootsubdir ) :
124 return "%s/%s.png" % ( rootsubdir , tiley )
126 def Shift( self , dx , dy ) :
129 tile_x , tile_y = ( self.refpix_x - dx ) / 256 , ( self.refpix_y - dy ) / 256
130 self.reftile_x += tile_x
131 self.reftile_y += tile_y
133 self.refpix_x -= dx + 256 * tile_x
134 self.refpix_y -= dy + 256 * tile_y
136 self.composeMap( self.zoom )
139 def SetZoom( self , zoom ) :
141 # FIXME : Use current lat,lon instead of hardcoded ones
142 lat , lon = 40.40491 , -3.6774
143 self.reftile_x , self.reftile_y = self.lon2tilex( lon , zoom ) , self.lat2tiley( lat , zoom )
145 self.refpix_x , self.refpix_y = 128 , 128
146 self.composeMap( zoom )
152 self.composeMap( self.zoom )
158 self.composeMap( self.zoom )
164 self.composeMap( self.zoom )
170 self.composeMap( self.zoom )
173 class ZoomDialog ( gtk.Dialog ) :
175 def __init__ ( self , widget ) :
176 gtk.Dialog.__init__( self , "Select zoom level",
179 ( gtk.STOCK_OK, gtk.RESPONSE_ACCEPT,
180 gtk.STOCK_CANCEL, gtk.RESPONSE_REJECT
184 zooms = gtk.ListStore(int)
185 combo = gtk.ComboBox( zooms )
187 for zoom in range(8,19) :
188 iter = zooms.append()
189 zooms.set( iter , 0 , zoom )
190 if zoom == widget.zoom :
191 combo.set_active_iter( iter )
193 cell = gtk.CellRendererText()
194 combo.pack_start(cell, True)
195 combo.add_attribute(cell, 'text', 0)
197 self.vbox.pack_start(combo , True, True, 0)
199 self.connect_object( "response", self.response , combo , widget )
201 def response ( self , combo , response , widget ) :
202 if response == gtk.RESPONSE_ACCEPT :
203 item = combo.get_active_iter()
204 model = combo.get_model()
205 widget.SetZoom( model.get(item,0)[0] )
211 def delete_event(self, widget, event, data=None):
212 # If you return FALSE in the "delete_event" signal handler,
213 # GTK will emit the "destroy" signal. Returning TRUE means
214 # you don't want the window to be destroyed.
215 # This is useful for popping up 'are you sure you want to quit?'
217 print "delete event occurred"
219 # Change FALSE to TRUE and the main window will not be destroyed
220 # with a "delete_event".
223 def destroy(self, widget, data=None):
224 print "destroy signal occurred"
227 def press_event ( self, widget, event, *args ) :
228 # FIXME : Set only if far enough from borders
231 print "press ",event.get_coords(),event.get_root_coords()
232 if event.x > border_x and event.y > border_y and event.x < ( self.size_x - border_x ) and event.y < ( self.size_y - border_y ) :
233 self.click_x = event.x
234 self.click_y = event.y
236 def release_event ( self, widget, event, *args ) :
238 print "unpress",event.get_coords(),event.get_root_coords()
239 if self.click_x is not None and self.click_y is not None :
240 delta_x = int( event.x - self.click_x )
241 delta_y = int( event.y - self.click_y )
242 shift = math.sqrt( delta_x * delta_x + delta_y * delta_y )
243 if shift > min_shift :
244 self.map.Shift(delta_x, delta_y)
247 # elif delta_x < -100 :
249 # elif delta_y > 100 :
251 # elif delta_y < -100 :
253 self.click_x , self.click_y = None , None
255 def screen_event ( self, widget, event, *args ) :
261 def on_button_press ( self, widget, event, *args ) :
264 def on_key_press ( self, widget, event, *args ) :
265 if event.keyval == gtk.keysyms.Up :
267 elif event.keyval == gtk.keysyms.Down :
269 elif event.keyval == gtk.keysyms.Right :
271 elif event.keyval == gtk.keysyms.Left :
274 print "UNKNOWN",event.keyval
278 self.window = gtk.Window(gtk.WINDOW_TOPLEVEL)
280 self.window.connect("delete_event", self.delete_event)
281 self.window.connect("destroy", self.destroy)
283 self.window.set_border_width(10)
285 self.window.connect("key-press-event", self.on_key_press)
287 vbox = gtk.VBox(False, 0)
288 self.window.add( vbox )
290 # To get explicit GDK_BUTTON_PRESS instead of paired GDK_LEAVE_NOTIFY & GDK_ENTER_NOTIFY
291 # self.window.add_events(gtk.gdk.BUTTON_MOTION_MASK | gtk.gdk.BUTTON_PRESS_MASK | gtk.gdk.BUTTON_RELEASE_MASK | gtk.gdk.POINTER_MOTION_MASK)
292 self.window.set_events( gtk.gdk.BUTTON_PRESS_MASK | gtk.gdk.BUTTON_RELEASE_MASK )
294 # self.window.connect('motion_notify_event', self.screen_event)
295 self.window.connect('button_press_event', self.press_event)
296 self.window.connect('button_release_event', self.release_event)
298 self.map = mapWidget()
299 vbox.pack_end( self.map , True , True , 5)
301 self.create_menu( vbox )
304 self.window.show_all()
306 self.size_x , self.size_y = 800 , 480
307 self.click_x , self.click_y = None , None
309 def zoomdialog ( self , widget ) :
310 dialog = ZoomDialog( widget )
313 def create_menu ( self , vbox ) :
314 menubar = gtk.MenuBar()
316 zoomlevel = gtk.MenuItem( label="Zoom level" )
317 zoomlevel.connect_object( "activate", self.zoomdialog, self.map )
318 menubar.append( zoomlevel )
320 vbox.pack_start(menubar,True,True,5)
325 if __name__ == "__main__":