diff options
Diffstat (limited to 'sugargame')
| -rw-r--r-- | sugargame/__init__.py | 1 | ||||
| -rw-r--r-- | sugargame/canvas.py | 62 | ||||
| -rw-r--r-- | sugargame/event.py | 246 |
3 files changed, 309 insertions, 0 deletions
diff --git a/sugargame/__init__.py b/sugargame/__init__.py new file mode 100644 index 0000000..439eb0c --- /dev/null +++ b/sugargame/__init__.py @@ -0,0 +1 @@ +__version__ = '1.1' diff --git a/sugargame/canvas.py b/sugargame/canvas.py new file mode 100644 index 0000000..980cb73 --- /dev/null +++ b/sugargame/canvas.py @@ -0,0 +1,62 @@ +import os +import gtk +import gobject +import pygame +import event + +CANVAS = None + +class PygameCanvas(gtk.EventBox): + + """ + mainwindow is the activity intself. + """ + def __init__(self, mainwindow, pointer_hint = True): + gtk.EventBox.__init__(self) + + global CANVAS + assert CANVAS == None, "Only one PygameCanvas can be created, ever." + CANVAS = self + + # Initialize Events translator before widget gets "realized". + self.translator = event.Translator(mainwindow, self) + + self._mainwindow = mainwindow + + self.set_flags(gtk.CAN_FOCUS) + + self._socket = gtk.Socket() + self.add(self._socket) + self.show_all() + + def run_pygame(self, main_fn): + # Run the main loop after a short delay. The reason for the delay is that the + # Sugar activity is not properly created until after its constructor returns. + # If the Pygame main loop is called from the activity constructor, the + # constructor never returns and the activity freezes. + gobject.idle_add(self._run_pygame_cb, main_fn) + + def _run_pygame_cb(self, main_fn): + assert pygame.display.get_surface() is None, "PygameCanvas.run_pygame can only be called once." + + # Preinitialize Pygame with the X window ID. + assert pygame.display.get_init() == False, "Pygame must not be initialized before calling PygameCanvas.run_pygame." + os.environ['SDL_WINDOWID'] = str(self._socket.get_id()) + pygame.init() + + # Restore the default cursor. + self._socket.window.set_cursor(None) + + # Initialize the Pygame window. + r = self.get_allocation() + pygame.display.set_mode((r.width, r.height), pygame.RESIZABLE) + + # Hook certain Pygame functions with GTK equivalents. + self.translator.hook_pygame() + + # Run the Pygame main loop. + main_fn() + return False + + def get_pygame_widget(self): + return self._socket diff --git a/sugargame/event.py b/sugargame/event.py new file mode 100644 index 0000000..2ee2bed --- /dev/null +++ b/sugargame/event.py @@ -0,0 +1,246 @@ +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 + try: + pygame.event.post(pygame.event.Event(pygame.QUIT)) + except pygame.error, e: + logging.error('pygame already stopped? %s' % (e)) + + 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 |