jam/js/x11/core/examples/smoketest/putimage.js

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2025-07-21 23:01:05 +02:00
var Buffer = require('buffer').Buffer;
var x11 = require('../../lib');
var fs = require('fs');
var logo1bit = fs.readFileSync('./nodejs-black.bmp');
var pixmap = require('./bmp').decodeBuffer(logo1bit);
var xclient = x11.createClient();
var Exposure = x11.eventMask.Exposure;
var PointerMotion = x11.eventMask.PointerMotion;
var bitmap = new Buffer(128*128/8); // 16384 bits, 2048 bytes bitmap
for (var i=0; i < bitmap.length; ++i)
{
bitmap[i] = i % 256;
}
xclient.on('connect', function(err, display) {
var X = this;
var root = display.screen[0].root;
var white = display.screen[0].white_pixel;
var black = display.screen[0].black_pixel;
//console.log(display.screen[0]);
var wid = X.AllocID();
X.CreateWindow(
wid, root,
10, 10, 400, 300,
1, 1, 0,
{
backgroundPixel: white, eventMask: Exposure|PointerMotion
wid, root,
10, 10, 400, 300,
0, 0, 0, 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) // expose
{
//X.PutImage(0, wid, gc, 128, 128, 20, 20, 0, 1, bitmap);
X.PutImage(0, wid, gc, pixmap.width, pixmap.height, 20, 20, 0, pixmap.depth, pixmap.data);
}
});
X.on('error', function(e) {
console.log(e);
});
});