X11 protocol client for node.js
npm install x11
Windows users:
implemented requests documentation
Core requsests usage:
var x11 = require('../lib/x11');
var xclient = x11.createClient();
var Exposure = x11.eventMask.Exposure;
var PointerMotion = x11.eventMask.PointerMotion;
xclient.on('connect', function(display) {
var X = this;
var root = display.screen[0].root;
var white = display.screen[0].white_pixel;
var black = display.screen[0].black_pixel;
var wid = X.AllocID();
X.CreateWindow(
wid, root,
0, 0, 100, 100,
1, 1, 0,
{
backgroundPixel: white, eventMask: Exposure|PointerMotion
}
);
X.MapWindow(wid);
var gc = X.AllocID();
X.CreateGC(gc, wid, { foreground: black, background: white } );
X.on('event', function(ev) {
if (ev.type == 12)
{
X.PolyText8(wid, gc, 50, 50, ['Hello, Node.JS!']);
}
});
X.on('error', function(e) {
console.log(e);
});
});
'click&draw' demo using simple Window wrapper:
var x11 = require('../lib/x11');
var Window = require('./wndwrap');
x11.createClient(function(display) {
var pts = [];
new Window(display.client, 0, 0, 700, 500)
.handle({
mousemove: function(ev) {
if (this.pressed)
{
var lastpoly = pts[pts.length - 1];
lastpoly.push(ev.x);
lastpoly.push(ev.y);
if (lastpoly.length > 3)
this.gc.polyLine(lastpoly.slice(-4));
}
},
mousedown: function(ev) {
if (ev.keycode == 1) { // left button
this.pressed = true;
pts.push([]); // start next polyline
}
},
mouseup: function(ev) {
if (ev.keycode == 1) // left button
this.pressed = false;
},
expose: function(ev) {
for (var i=0; i < pts.length ; ++i)
this.gc.polyLine(pts[i]);
}
})
.map()
.title = 'Hello, world!';
});
- http://www.x.org/releases/X11R7.6/doc/
- http://www.x.org/releases/X11R7.6/doc/xproto/x11protocol.pdf
- C Xlib to X11 request mapping table http://tronche.com/gui/x/xlib/appendix/a.html
- C: XLib - http://codesearch.google.com/codesearch/p?hl=en#xEHUuo8Crmg/sites/ftp.x.org/pub/X11R7.2/src/update/everything/libX11-X11R7.2-1.1.1.tar.bz2%7CnOqwAyDlYlo/libX11-X11R7.2-1.1.1/src/OpenDis.c&q=XOpenDisplay&d=3
- C: XCB - http://xcb.freedesktop.org/
- Python: http://sourceforge.net/projects/python-xlib/ ( github fork: https://github.com/Ademan/python-xlib-branch pypi: http://pypi.python.org/pypi/Python%20Xlib )
- Python/twisted: https://launchpad.net/twisted-x11
- Perl: http://search.cpan.org/~smccam/X11-Protocol-0.56/Protocol.pm