1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
|
#!/usr/bin/env python
# To run this example, you need to set the GI_TYPELIB_PATH environment
# variable to point to the gir directory:
#
# export GI_TYPELIB_PATH=$GI_TYPELIB_PATH:/usr/local/lib/girepository-1.0/
import gi
gi.require_version('GtkChamplain', '0.12')
gi.require_version('GtkClutter', '1.0')
from gi.repository import GtkClutter
from gi.repository import Gtk, Gdk, GtkChamplain
class KeyboardMapping:
def __init__(self):
GtkClutter.init([])
window = Gtk.Window(type=Gtk.WindowType.TOPLEVEL)
window.connect("destroy", Gtk.main_quit)
window.connect("key-press-event", self.on_key_press)
self.widget = GtkChamplain.Embed()
self.widget.set_size_request(640, 480)
self.view = self.widget.get_view()
self.view.set_horizontal_wrap(True)
window.add(self.widget)
window.show_all()
def on_key_press(self, widget, ev):
deltax = self.widget.get_allocation().width / 4
deltay = self.widget.get_allocation().height / 4
if ev.keyval == Gdk.KEY_Left:
self.scroll(-deltax, 0)
elif ev.keyval == Gdk.KEY_Right:
self.scroll(deltax, 0)
elif ev.keyval == Gdk.KEY_Up:
self.scroll(0, -deltay)
elif ev.keyval == Gdk.KEY_Down:
self.scroll(0, deltay)
elif ev.keyval == Gdk.KEY_plus or ev.keyval == Gdk.KEY_KP_Add:
self.view.zoom_in()
elif ev.keyval == Gdk.KEY_minus or ev.keyval == Gdk.KEY_KP_Subtract:
self.view.zoom_out()
else:
return False
return True
def scroll(self, deltax, deltay):
lat = self.view.get_center_latitude()
lon = self.view.get_center_longitude()
x = self.view.longitude_to_x(lon) + deltax
y = self.view.latitude_to_y(lat) + deltay
lon = self.view.x_to_longitude(x)
lat = self.view.y_to_latitude(y)
self.view.center_on(lat, lon)
#self.view.go_to(lat, lon)
if __name__ == "__main__":
KeyboardMapping()
Gtk.main()
|
