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| # $Id: xtest.py,v 1.1 2000/08/21 10:03:45 petli Exp $ | |
| # | |
| # Xlib.ext.composite -- Composite extension module | |
| # | |
| # Copyright (C) 2007 Peter Liljenberg <[email protected]> | |
| # | |
| # This library is free software; you can redistribute it and/or | |
| # modify it under the terms of the GNU Lesser General Public License | |
| # as published by the Free Software Foundation; either version 2.1 | |
| # of the License, or (at your option) any later version. | |
| # | |
| # This library is distributed in the hope that it will be useful, | |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. | |
| # See the GNU Lesser General Public License for more details. | |
| # | |
| # You should have received a copy of the GNU Lesser General Public | |
| # License along with this library; if not, write to the | |
| # Free Software Foundation, Inc., | |
| # 59 Temple Place, | |
| # Suite 330, | |
| # Boston, MA 02111-1307 USA | |
| """Composite extension, allowing windows to be rendered to off-screen | |
| storage. | |
| For detailed description, see the protocol specification at | |
| http://freedesktop.org/wiki/Software/CompositeExt | |
| By itself this extension is not very useful, it is intended to be used | |
| together with the DAMAGE and XFIXES extensions. Typically you would | |
| also need RENDER or glX or some similar method of creating fancy | |
| graphics. | |
| """ | |
| from Xlib.protocol import rq | |
| from Xlib.xobject import drawable | |
| extname = 'Composite' | |
| RedirectAutomatic = 0 | |
| RedirectManual = 1 | |
| class QueryVersion(rq.ReplyRequest): | |
| _request = rq.Struct( | |
| rq.Card8('opcode'), | |
| rq.Opcode(0), | |
| rq.RequestLength(), | |
| rq.Card32('major_version'), | |
| rq.Card32('minor_version') | |
| ) | |
| _reply = rq.Struct( | |
| rq.ReplyCode(), | |
| rq.Pad(1), | |
| rq.Card16('sequence_number'), | |
| rq.ReplyLength(), | |
| rq.Card32('major_version'), | |
| rq.Card32('minor_version'), | |
| rq.Pad(16), | |
| ) | |
| def query_version(self): | |
| return QueryVersion( | |
| display = self.display, | |
| opcode = self.display.get_extension_major(extname), | |
| major_version=0, | |
| minor_version=4 | |
| ) | |
| class RedirectWindow(rq.Request): | |
| _request = rq.Struct( | |
| rq.Card8('opcode'), | |
| rq.Opcode(1), | |
| rq.RequestLength(), | |
| rq.Window('window'), | |
| rq.Set('update', 1, (RedirectAutomatic, RedirectManual)), | |
| rq.Pad(3), | |
| ) | |
| def redirect_window(self, update, onerror = None): | |
| """Redirect the hierarchy starting at this window to off-screen | |
| storage. | |
| """ | |
| RedirectWindow(display = self.display, | |
| onerror = onerror, | |
| opcode = self.display.get_extension_major(extname), | |
| window = self, | |
| update = update, | |
| ) | |
| class RedirectSubwindows(rq.Request): | |
| _request = rq.Struct( | |
| rq.Card8('opcode'), | |
| rq.Opcode(2), | |
| rq.RequestLength(), | |
| rq.Window('window'), | |
| rq.Set('update', 1, (RedirectAutomatic, RedirectManual)), | |
| rq.Pad(3), | |
| ) | |
| def redirect_subwindows(self, update, onerror = None): | |
| """Redirect the hierarchies starting at all current and future | |
| children to this window to off-screen storage. | |
| """ | |
| RedirectSubwindows(display = self.display, | |
| onerror = onerror, | |
| opcode = self.display.get_extension_major(extname), | |
| window = self, | |
| update = update, | |
| ) | |
| class UnredirectWindow(rq.Request): | |
| _request = rq.Struct( | |
| rq.Card8('opcode'), | |
| rq.Opcode(3), | |
| rq.RequestLength(), | |
| rq.Window('window'), | |
| rq.Set('update', 1, (RedirectAutomatic, RedirectManual)), | |
| rq.Pad(3), | |
| ) | |
| def unredirect_window(self, update, onerror = None): | |
| """Stop redirecting this window hierarchy. | |
| """ | |
| UnredirectWindow(display = self.display, | |
| onerror = onerror, | |
| opcode = self.display.get_extension_major(extname), | |
| window = self, | |
| update = update, | |
| ) | |
| class UnredirectSubindows(rq.Request): | |
| _request = rq.Struct( | |
| rq.Card8('opcode'), | |
| rq.Opcode(4), | |
| rq.RequestLength(), | |
| rq.Window('window'), | |
| rq.Set('update', 1, (RedirectAutomatic, RedirectManual)), | |
| rq.Pad(3), | |
| ) | |
| def unredirect_subwindows(self, update, onerror = None): | |
| """Stop redirecting the hierarchies of children to this window. | |
| """ | |
| RedirectWindow(display = self.display, | |
| onerror = onerror, | |
| opcode = self.display.get_extension_major(extname), | |
| window = self, | |
| update = update, | |
| ) | |
| class CreateRegionFromBorderClip(rq.Request): | |
| _request = rq.Struct( | |
| rq.Card8('opcode'), | |
| rq.Opcode(5), | |
| rq.RequestLength(), | |
| rq.Card32('region'), # FIXME: this should be a Region from XFIXES extension | |
| rq.Window('window'), | |
| ) | |
| def create_region_from_border_clip(self, onerror = None): | |
| """Create a region of the border clip of the window, i.e. the area | |
| that is not clipped by the parent and any sibling windows. | |
| """ | |
| rid = self.display.allocate_resource_id() | |
| CreateRegionFromBorderClip( | |
| display = self.display, | |
| onerror = onerror, | |
| opcode = self.display.get_extension_major(extname), | |
| region = rid, | |
| window = self, | |
| ) | |
| # FIXME: create Region object and return it | |
| return rid | |
| class NameWindowPixmap(rq.Request): | |
| _request = rq.Struct( | |
| rq.Card8('opcode'), | |
| rq.Opcode(6), | |
| rq.RequestLength(), | |
| rq.Window('window'), | |
| rq.Pixmap('pixmap'), | |
| ) | |
| def name_window_pixmap(self, onerror = None): | |
| """Create a new pixmap that refers to the off-screen storage of | |
| the window, including its border. | |
| This pixmap will remain allocated until freed whatever happens | |
| with the window. However, the window will get a new off-screen | |
| pixmap every time it is mapped or resized, so to keep track of the | |
| contents you must listen for these events and get a new pixmap | |
| after them. | |
| """ | |
| pid = self.display.allocate_resource_id() | |
| NameWindowPixmap(display = self.display, | |
| onerror = onerror, | |
| opcode = self.display.get_extension_major(extname), | |
| window = self, | |
| pixmap = pid, | |
| ) | |
| cls = self.display.get_resource_class('pixmap', drawable.Pixmap) | |
| return cls(self.display, pid, owner = 1) | |
| class GetOverlayWindow(rq.ReplyRequest): | |
| _request = rq.Struct( | |
| rq.Card8('opcode'), | |
| rq.Opcode(7), | |
| rq.RequestLength(), | |
| rq.Window('window') | |
| ) | |
| _reply = rq.Struct( | |
| rq.ReplyCode(), | |
| rq.Pad(1), | |
| rq.Card16('sequence_number'), | |
| rq.ReplyLength(), | |
| rq.Window('overlay_window'), | |
| rq.Pad(20), | |
| ) | |
| def get_overlay_window(self): | |
| """Return the overlay window of the root window. | |
| """ | |
| return GetOverlayWindow(display = self.display, | |
| opcode = self.display.get_extension_major(extname), | |
| window = self) | |
| def init(disp, info): | |
| disp.extension_add_method('display', | |
| 'composite_query_version', | |
| query_version) | |
| disp.extension_add_method('window', | |
| 'composite_redirect_window', | |
| redirect_window) | |
| disp.extension_add_method('window', | |
| 'composite_redirect_subwindows', | |
| redirect_subwindows) | |
| disp.extension_add_method('window', | |
| 'composite_unredirect_window', | |
| unredirect_window) | |
| disp.extension_add_method('window', | |
| 'composite_unredirect_subwindows', | |
| unredirect_subwindows) | |
| disp.extension_add_method('window', | |
| 'composite_create_region_from_border_clip', | |
| create_region_from_border_clip) | |
| disp.extension_add_method('window', | |
| 'composite_name_window_pixmap', | |
| name_window_pixmap) | |
| disp.extension_add_method('window', | |
| 'composite_get_overlay_window', | |
| get_overlay_window) | |