81 lines
2.2 KiB
JavaScript
81 lines
2.2 KiB
JavaScript
//var logo = require('./node-png').readPng('./node-logo.png');
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var fs = require('fs');
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var Decoder = require('./png-decoder');
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var decoder = new Decoder();
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var logo = {
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data : Buffer.from(decoder.parse(fs.readFileSync('./screen.png'))),
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width : decoder._IHDR.width,
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height : decoder._IHDR.height
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};
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var x11 = require('../../lib');
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var Exposure = x11.eventMask.Exposure;
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x11.createClient(function(err, display)
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{
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var X = display.client;
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X.require('render', function(err, Render) {
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var root = display.screen[0].root;
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main(root, X, Render, display);
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});
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});
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function main(root, X, Render, display) {
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var win, picWin, pic, gc;
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win = X.AllocID();
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X.CreateWindow(
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win, root,
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0, 0, logo.width, logo.height,
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0, 0, 0, 0,
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{ eventMask: Exposure }
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);
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X.MapWindow(win);
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gc = X.AllocID();
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X.CreateGC(gc, win);
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var logoPixmap = X.AllocID();
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X.CreatePixmap(logoPixmap, win, 24, logo.width, logo.height);
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var rscreen = display.screen[0];
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var screen =
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rscreen.depths[rscreen.root_depth][
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Object.keys(rscreen.depths[rscreen.root_depth])[0]];
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var rmask = parseInt(screen.red_mask, 10);
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var gmask = parseInt(screen.green_mask, 10);
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var bmask = parseInt(screen.blue_mask, 10);
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for (var y = 0; y < logo.height; y++) {
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for (var x = 0; x < logo.width; x++) {
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var pixel = Buffer.from([
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logo.data[(x + logo.width * y) * 4],
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logo.data[(x + logo.width * y) * 4 + 1],
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logo.data[(x + logo.width * y) * 4 + 2], 0]).readInt32LE();
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logo.data[(x + logo.width * y) * 4 ] = (pixel & rmask) >> 16;
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logo.data[(x + logo.width * y) * 4 + 1] = (pixel & gmask) >> 8;
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logo.data[(x + logo.width * y) * 4 + 2] = (pixel & bmask) >> 0;
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logo.data[(x + logo.width * y) * 4 + 3] = 0x00;
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}
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}
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X.PutImage(2, logoPixmap, gc, logo.width, logo.height, 0, 0, 0, 24, logo.data);
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var logoPicture = X.AllocID();
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Render.CreatePicture(logoPicture, logoPixmap, Render.rgb24);
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var winPicture = X.AllocID();
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Render.CreatePicture(winPicture, win, Render.rgb24);
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X.on('event', function(ev) {
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if (ev.name == 'Expose') {
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Render.Composite(3, logoPicture, 0, winPicture, 0, 0, 0, 0, 0, 0, logo.width, logo.height);
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}
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});
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}
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