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import ctypes
from ctypes import *
from pyglet import app
from pyglet.app.xlib import XlibSelectDevice
from .base import Display, Screen, ScreenMode, Canvas
from . import xlib_vidmoderestore
# XXX
# from pyglet.window import NoSuchDisplayException
class NoSuchDisplayException(Exception):
pass
from pyglet.libs.x11 import xlib
try:
from pyglet.libs.x11 import xinerama
_have_xinerama = True
except:
_have_xinerama = False
try:
from pyglet.libs.x11 import xsync
_have_xsync = True
except:
_have_xsync = False
try:
from pyglet.libs.x11 import xf86vmode
_have_xf86vmode = True
except:
_have_xf86vmode = False
# Set up error handler
def _error_handler(display, event):
# By default, all errors are silently ignored: this has a better chance
# of working than the default behaviour of quitting ;-)
#
# We've actually never seen an error that was our fault; they're always
# driver bugs (and so the reports are useless). Nevertheless, set
# environment variable PYGLET_DEBUG_X11 to 1 to get dumps of the error
# and a traceback (execution will continue).
import pyglet
if pyglet.options['debug_x11']:
event = event.contents
buf = c_buffer(1024)
xlib.XGetErrorText(display, event.error_code, buf, len(buf))
print('X11 error:', buf.value)
print(' serial:', event.serial)
print(' request:', event.request_code)
print(' minor:', event.minor_code)
print(' resource:', event.resourceid)
import traceback
print('Python stack trace (innermost last):')
traceback.print_stack()
return 0
_error_handler_ptr = xlib.XErrorHandler(_error_handler)
xlib.XSetErrorHandler(_error_handler_ptr)
class XlibDisplay(XlibSelectDevice, Display):
_display = None # POINTER(xlib.Display)
_x_im = None # X input method
# TODO close _x_im when display connection closed.
_enable_xsync = False
_screens = None # Cache of get_screens()
def __init__(self, name=None, x_screen=None):
if x_screen is None:
x_screen = 0
if isinstance(name, str):
name = c_char_p(name.encode('ascii'))
self._display = xlib.XOpenDisplay(name)
if not self._display:
raise NoSuchDisplayException(f'Cannot connect to "{name}"')
screen_count = xlib.XScreenCount(self._display)
if x_screen >= screen_count:
raise NoSuchDisplayException(f'Display "{name}" has no screen {x_screen:d}')
super(XlibDisplay, self).__init__()
self.name = name
self.x_screen = x_screen
self._fileno = xlib.XConnectionNumber(self._display)
self._window_map = {}
# Initialise XSync
if _have_xsync:
event_base = c_int()
error_base = c_int()
if xsync.XSyncQueryExtension(self._display,
byref(event_base),
byref(error_base)):
major_version = c_int()
minor_version = c_int()
if xsync.XSyncInitialize(self._display,
byref(major_version),
byref(minor_version)):
self._enable_xsync = True
# Add to event loop select list. Assume we never go away.
app.platform_event_loop.select_devices.add(self)
def get_screens(self):
if self._screens:
return self._screens
if _have_xinerama and xinerama.XineramaIsActive(self._display):
number = c_int()
infos = xinerama.XineramaQueryScreens(self._display, byref(number))
infos = cast(infos, POINTER(xinerama.XineramaScreenInfo * number.value)).contents
self._screens = []
using_xinerama = number.value > 1
for info in infos:
self._screens.append(XlibScreen(self,
info.x_org,
info.y_org,
info.width,
info.height,
using_xinerama))
xlib.XFree(infos)
else:
# No xinerama
screen_info = xlib.XScreenOfDisplay(self._display, self.x_screen)
screen = XlibScreen(self,
0, 0,
screen_info.contents.width,
screen_info.contents.height,
False)
self._screens = [screen]
return self._screens
# XlibSelectDevice interface
def fileno(self):
return self._fileno
def select(self):
e = xlib.XEvent()
while xlib.XPending(self._display):
xlib.XNextEvent(self._display, e)
# Key events are filtered by the xlib window event
# handler so they get a shot at the prefiltered event.
if e.xany.type not in (xlib.KeyPress, xlib.KeyRelease):
if xlib.XFilterEvent(e, e.xany.window):
continue
try:
dispatch = self._window_map[e.xany.window]
except KeyError:
continue
dispatch(e)
def poll(self):
return xlib.XPending(self._display)
class XlibScreen(Screen):
_initial_mode = None
def __init__(self, display, x, y, width, height, xinerama):
super(XlibScreen, self).__init__(display, x, y, width, height)
self._xinerama = xinerama
def get_matching_configs(self, template):
canvas = XlibCanvas(self.display, None)
configs = template.match(canvas)
# XXX deprecate
for config in configs:
config.screen = self
return configs
def get_modes(self):
if not _have_xf86vmode:
return []
if self._xinerama:
# If Xinerama/TwinView is enabled, xf86vidmode's modelines
# correspond to metamodes, which don't distinguish one screen from
# another. XRandR (broken) or NV (complicated) extensions needed.
return []
count = ctypes.c_int()
info_array = ctypes.POINTER(ctypes.POINTER(xf86vmode.XF86VidModeModeInfo))()
xf86vmode.XF86VidModeGetAllModeLines(self.display._display, self.display.x_screen, count, info_array)
# Copy modes out of list and free list
modes = []
for i in range(count.value):
info = xf86vmode.XF86VidModeModeInfo()
ctypes.memmove(ctypes.byref(info),
ctypes.byref(info_array.contents[i]),
ctypes.sizeof(info))
modes.append(XlibScreenMode(self, info))
if info.privsize:
xlib.XFree(info.private)
xlib.XFree(info_array)
return modes
def get_mode(self):
modes = self.get_modes()
if modes:
return modes[0]
return None
def set_mode(self, mode):
assert mode.screen is self
if not self._initial_mode:
self._initial_mode = self.get_mode()
xlib_vidmoderestore.set_initial_mode(self._initial_mode)
xf86vmode.XF86VidModeSwitchToMode(self.display._display, self.display.x_screen, mode.info)
xlib.XFlush(self.display._display)
xf86vmode.XF86VidModeSetViewPort(self.display._display, self.display.x_screen, 0, 0)
xlib.XFlush(self.display._display)
self.width = mode.width
self.height = mode.height
def restore_mode(self):
if self._initial_mode:
self.set_mode(self._initial_mode)
def __repr__(self):
return f"{self.__class__.__name__}(display={self.display!r}, x={self.x}, y={self.y}, " \
f"width={self.width}, height={self.height}, xinerama={self._xinerama})"
class XlibScreenMode(ScreenMode):
def __init__(self, screen, info):
super(XlibScreenMode, self).__init__(screen)
self.info = info
self.width = info.hdisplay
self.height = info.vdisplay
self.rate = info.dotclock
self.depth = None
class XlibCanvas(Canvas):
def __init__(self, display, x_window):
super(XlibCanvas, self).__init__(display)
self.x_window = x_window
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