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authorDaniel Francis <francis@sugarlabs.org>2012-12-21 01:51:29 (GMT)
committer Daniel Francis <francis@sugarlabs.org>2012-12-21 01:51:29 (GMT)
commitbcf8fc6694df68e0d44b8060dff14878549ae1f4 (patch)
tree81163fdd3d468e88c1a27ceb7bfd1ed9fb4ae8ce /sugargame/event.py
parent67f30fb28b7a4dca8ae8eb8d00990f832fc7689b (diff)
Starter port to sugargame
Signed-off-by: Daniel Francis <francis@sugarlabs.org>
Diffstat (limited to 'sugargame/event.py')
-rw-r--r--sugargame/event.py243
1 files changed, 243 insertions, 0 deletions
diff --git a/sugargame/event.py b/sugargame/event.py
new file mode 100644
index 0000000..4cc3be8
--- /dev/null
+++ b/sugargame/event.py
@@ -0,0 +1,243 @@
+import gtk
+import gobject
+import pygame
+import pygame.event
+import logging
+
+class _MockEvent(object):
+ def __init__(self, keyval):
+ self.keyval = keyval
+
+class Translator(object):
+ key_trans = {
+ 'Alt_L': pygame.K_LALT,
+ 'Alt_R': pygame.K_RALT,
+ 'Control_L': pygame.K_LCTRL,
+ 'Control_R': pygame.K_RCTRL,
+ 'Shift_L': pygame.K_LSHIFT,
+ 'Shift_R': pygame.K_RSHIFT,
+ 'Super_L': pygame.K_LSUPER,
+ 'Super_R': pygame.K_RSUPER,
+ 'KP_Page_Up' : pygame.K_KP9,
+ 'KP_Page_Down' : pygame.K_KP3,
+ 'KP_End' : pygame.K_KP1,
+ 'KP_Home' : pygame.K_KP7,
+ 'KP_Up' : pygame.K_KP8,
+ 'KP_Down' : pygame.K_KP2,
+ 'KP_Left' : pygame.K_KP4,
+ 'KP_Right' : pygame.K_KP6,
+
+ }
+
+ mod_map = {
+ pygame.K_LALT: pygame.KMOD_LALT,
+ pygame.K_RALT: pygame.KMOD_RALT,
+ pygame.K_LCTRL: pygame.KMOD_LCTRL,
+ pygame.K_RCTRL: pygame.KMOD_RCTRL,
+ pygame.K_LSHIFT: pygame.KMOD_LSHIFT,
+ pygame.K_RSHIFT: pygame.KMOD_RSHIFT,
+ }
+
+ def __init__(self, mainwindow, inner_evb):
+ """Initialise the Translator with the windows to which to listen"""
+ self._mainwindow = mainwindow
+ self._inner_evb = inner_evb
+
+ # Enable events
+ # (add instead of set here because the main window is already realized)
+ self._mainwindow.add_events(
+ gtk.gdk.KEY_PRESS_MASK | \
+ gtk.gdk.KEY_RELEASE_MASK \
+ )
+
+ self._inner_evb.set_events(
+ gtk.gdk.POINTER_MOTION_MASK | \
+ gtk.gdk.POINTER_MOTION_HINT_MASK | \
+ gtk.gdk.BUTTON_MOTION_MASK | \
+ gtk.gdk.BUTTON_PRESS_MASK | \
+ gtk.gdk.BUTTON_RELEASE_MASK
+ )
+
+ self._mainwindow.set_flags(gtk.CAN_FOCUS)
+ self._inner_evb.set_flags(gtk.CAN_FOCUS)
+
+ # Callback functions to link the event systems
+ self._mainwindow.connect('unrealize', self._quit_cb)
+ self._inner_evb.connect('key_press_event', self._keydown_cb)
+ self._inner_evb.connect('key_release_event', self._keyup_cb)
+ self._inner_evb.connect('button_press_event', self._mousedown_cb)
+ self._inner_evb.connect('button_release_event', self._mouseup_cb)
+ self._inner_evb.connect('motion-notify-event', self._mousemove_cb)
+ self._inner_evb.connect('expose-event', self._expose_cb)
+ self._inner_evb.connect('configure-event', self._resize_cb)
+
+ # Internal data
+ self.__stopped = False
+ self.__keystate = [0] * 323
+ self.__button_state = [0,0,0]
+ self.__mouse_pos = (0,0)
+ self.__repeat = (None, None)
+ self.__held = set()
+ self.__held_time_left = {}
+ self.__held_last_time = {}
+ self.__tick_id = None
+
+ def hook_pygame(self):
+ pygame.key.get_pressed = self._get_pressed
+ pygame.key.set_repeat = self._set_repeat
+ pygame.mouse.get_pressed = self._get_mouse_pressed
+ pygame.mouse.get_pos = self._get_mouse_pos
+
+ def _expose_cb(self, event, widget):
+ if pygame.display.get_init():
+ pygame.event.post(pygame.event.Event(pygame.VIDEOEXPOSE))
+ return True
+
+ def _resize_cb(self, widget, event):
+ evt = pygame.event.Event(pygame.VIDEORESIZE,
+ size=(event.width,event.height), width=event.width, height=event.height)
+ pygame.event.post(evt)
+ return False # continue processing
+
+ def _quit_cb(self, data=None):
+ self.__stopped = True
+ pygame.event.post(pygame.event.Event(pygame.QUIT))
+
+ def _keydown_cb(self, widget, event):
+ key = event.keyval
+ if key in self.__held:
+ return True
+ else:
+ if self.__repeat[0] is not None:
+ self.__held_last_time[key] = pygame.time.get_ticks()
+ self.__held_time_left[key] = self.__repeat[0]
+ self.__held.add(key)
+
+ return self._keyevent(widget, event, pygame.KEYDOWN)
+
+ def _keyup_cb(self, widget, event):
+ key = event.keyval
+ if self.__repeat[0] is not None:
+ if key in self.__held:
+ # This is possibly false if set_repeat() is called with a key held
+ del self.__held_time_left[key]
+ del self.__held_last_time[key]
+ self.__held.discard(key)
+
+ return self._keyevent(widget, event, pygame.KEYUP)
+
+ def _keymods(self):
+ mod = 0
+ for key_val, mod_val in self.mod_map.iteritems():
+ mod |= self.__keystate[key_val] and mod_val
+ return mod
+
+ def _keyevent(self, widget, event, type):
+ key = gtk.gdk.keyval_name(event.keyval)
+ if key is None:
+ # No idea what this key is.
+ return False
+
+ keycode = None
+ if key in self.key_trans:
+ keycode = self.key_trans[key]
+ elif hasattr(pygame, 'K_'+key.upper()):
+ keycode = getattr(pygame, 'K_'+key.upper())
+ elif hasattr(pygame, 'K_'+key.lower()):
+ keycode = getattr(pygame, 'K_'+key.lower())
+ elif key == 'XF86Start':
+ # view source request, specially handled...
+ self._mainwindow.view_source()
+ else:
+ print 'Key %s unrecognized' % key
+
+ if keycode is not None:
+ if type == pygame.KEYDOWN:
+ mod = self._keymods()
+ self.__keystate[keycode] = type == pygame.KEYDOWN
+ if type == pygame.KEYUP:
+ mod = self._keymods()
+ ukey = unichr(gtk.gdk.keyval_to_unicode(event.keyval))
+ if ukey == '\000':
+ ukey = ''
+ evt = pygame.event.Event(type, key=keycode, unicode=ukey, mod=mod)
+ self._post(evt)
+
+ return True
+
+ def _get_pressed(self):
+ return self.__keystate
+
+ def _get_mouse_pressed(self):
+ return self.__button_state
+
+ def _mousedown_cb(self, widget, event):
+ self.__button_state[event.button-1] = 1
+ return self._mouseevent(widget, event, pygame.MOUSEBUTTONDOWN)
+
+ def _mouseup_cb(self, widget, event):
+ self.__button_state[event.button-1] = 0
+ return self._mouseevent(widget, event, pygame.MOUSEBUTTONUP)
+
+ def _mouseevent(self, widget, event, type):
+ evt = pygame.event.Event(type, button=event.button, pos=(event.x, event.y))
+ self._post(evt)
+ return True
+
+ def _mousemove_cb(self, widget, event):
+ # From http://www.learningpython.com/2006/07/25/writing-a-custom-widget-using-pygtk/
+ # if this is a hint, then let's get all the necessary
+ # information, if not it's all we need.
+ if event.is_hint:
+ x, y, state = event.window.get_pointer()
+ else:
+ x = event.x
+ y = event.y
+ state = event.state
+
+ rel = (x - self.__mouse_pos[0], y - self.__mouse_pos[1])
+ self.__mouse_pos = (x, y)
+
+ self.__button_state = [
+ state & gtk.gdk.BUTTON1_MASK and 1 or 0,
+ state & gtk.gdk.BUTTON2_MASK and 1 or 0,
+ state & gtk.gdk.BUTTON3_MASK and 1 or 0,
+ ]
+
+ evt = pygame.event.Event(pygame.MOUSEMOTION,
+ pos=self.__mouse_pos, rel=rel, buttons=self.__button_state)
+ self._post(evt)
+ return True
+
+ def _tick_cb(self):
+ cur_time = pygame.time.get_ticks()
+ for key in self.__held:
+ delta = cur_time - self.__held_last_time[key]
+ self.__held_last_time[key] = cur_time
+
+ self.__held_time_left[key] -= delta
+ if self.__held_time_left[key] <= 0:
+ self.__held_time_left[key] = self.__repeat[1]
+ self._keyevent(None, _MockEvent(key), pygame.KEYDOWN)
+
+ return True
+
+ def _set_repeat(self, delay=None, interval=None):
+ if delay is not None and self.__repeat[0] is None:
+ self.__tick_id = gobject.timeout_add(10, self._tick_cb)
+ elif delay is None and self.__repeat[0] is not None:
+ gobject.source_remove(self.__tick_id)
+ self.__repeat = (delay, interval)
+
+ def _get_mouse_pos(self):
+ return self.__mouse_pos
+
+ def _post(self, evt):
+ try:
+ pygame.event.post(evt)
+ except pygame.error, e:
+ if str(e) == 'Event queue full':
+ print "Event queue full!"
+ pass
+ else:
+ raise e