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#!/usr/bin/perl -w
# Copyright 2011, 2012 Kevin Ryde
# This file is part of X11-Protocol-Other.
#
# X11-Protocol-Other is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as published
# by the Free Software Foundation; either version 3, or (at your option) any
# later version.
#
# X11-Protocol-Other 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 General
# Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with X11-Protocol-Other. If not, see <http://www.gnu.org/licenses/>.
use strict;
use X11::Protocol;
# uncomment this to run the ### lines
use Smart::Comments;
$ENV{'DISPLAY'} ||= ':0';
{
my $X = X11::Protocol->new;
$X->init_extension('DOUBLE-BUFFER') or die;
# {
# my @version = $X->DbeGetVersion (99,99);
# ### @version
# }
# # $X->QueryPointer($X->{'root'}); # sync
{
### DbeGetVisualInfo send ...
my $window = $X->root;
my $seq = $X->send('DbeGetVisualInfo',$window);
sleep 1;
### $seq
### sync ...
# foreach (1..7) {
# $X->send('GetAtomName',3);
# }
# # $X->{'connection'}->give("\0"x16384);
# $X->flush;
#
# $X->QueryPointer($X->{'root'});
for (;;) {
### X handle_input ...
$X->handle_input;
}
exit 0;
}
{
### DbeGetVisualInfo ...
### seq: $X->{'sequence_num'}
my @infos = $X->DbeGetVisualInfo($X->root);
### @infos
}
$X->QueryPointer($X->{'root'}); # sync
exit 0;
}
{
my $X = X11::Protocol->new (':0');
$X->{'event_handler'} = sub {
my (%h) = @_;
### event_handler: \%h
};
$X->init_extension('DOUBLE-BUFFER') or die $@;
$X->QueryPointer($X->{'root'}); # sync
my $width = 100;
my $height = 100;
my $window = $X->new_rsrc;
$X->CreateWindow ($window,
$X->root, # parent
'InputOutput',
0, # depth, from parent
'CopyFromParent', # visual
0,0, # x,y
$width,$height,
0, # border
background_pixel => $X->black_pixel,
);
$X->MapWindow ($window);
sleep 1;
my $gc = $X->new_rsrc;
$X->CreateGC ($gc, $window,
foreground => 0xFF00FF,
background => 0);
my $buffer = $X->new_rsrc;
$X->DbeAllocateBackBufferName ($window, $buffer, 'Copied');
$X->QueryPointer($X->{'root'}); # sync
$X->PolyFillRectangle ($buffer, $gc, [10,10, $width,$height]);
$X->QueryPointer($X->{'root'}); # sync
sleep 1;
$X->DbeSwapBuffers ($window, 'Copied');
$X->QueryPointer($X->{'root'}); # sync
sleep 1;
{
my @attr = $X->DbeGetBackBufferAttributes ($buffer);
### @attr
$X->QueryPointer($X->{'root'}); # sync
}
$X->DestroyWindow ($window);
$X->QueryPointer($X->{'root'}); # sync
{
my @attr = $X->DbeGetBackBufferAttributes ($buffer);
### @attr
$X->QueryPointer($X->{'root'}); # sync
}
$X->DbeDellocateBackBufferName ($buffer);
$X->PolyFillRectangle ($buffer, $gc, [0,0, $width,$height]);
$X->QueryPointer($X->{'root'}); # sync
exit 0;
}
sub atom_name_maybe {
my ($X, $atom) = @_;
my $ret = $X->robust_req ('GetAtomName', $atom);
if (ref $ret) {
return @$ret;
}
return '[not-atom]';
}
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