Attachment 121193 Details for Bug 93816 – nodejs script to replicate the issue.

nodejs script to replicate the issue.

simple.js (text/plain), 2.27 KB, created by marc-andre.parent on 2016-01-21 19:53:04 UTC

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Creator: marc-andre.parent

Created: 2016-01-21 19:53:04 UTC

Size: 2.27 KB

patch

obsolete

>var x11 = require('../../lib');
>var Exposure = x11.eventMask.Exposure;
>
>process.stdin.setEncoding('utf8');
>
>if (process.argv.length != 5) {
>	console.log('usage: nodejs simple.js x y scaleImage');
>	process.exit(1);
>}
>// Window location parametes
>var xLocation = parseInt(process.argv[2]);
>var yLocation = parseInt(process.argv[3]);
>var scaleImage = process.argv[4];
>
>// Image size parameters
>var width = 300;
>var height = 300;
>
>var rgb = {
>  data:new Buffer(width*height*4),
>  width: width,
>  height: height
>};
>
>var index;
>for (var x = 0; x < rgb.width; ++x)
>{
>  for (var y = 0; y < rgb.height; ++y)
>  {
>    index = (x + y*rgb.width)*4;
>    rgb.data[index] = parseInt(Math.sin(13*x/rgb.width)*255);
>    rgb.data[index+1] = parseInt(Math.cos(15*y/rgb.height)*255);
>    rgb.data[index+2] = parseInt(Math.cos(16*y/rgb.height)*255);
>  }
>}
>
>x11.createClient(function(err, display)
>{
>  var X = display.client;
>  X.require('render', function(err,Render) {
>    var root = display.screen[0].root; 
>    var win, picWin, pic, gc;
>
>    win = X.AllocID();
>    X.CreateWindow(
>       win, root,
>       xLocation, yLocation, rgb.width * 2, rgb.height * 2,
>       0, 0, 0, 0,
>       { eventMask: Exposure }
>    );
>    X.MapWindow(win);
>
>    gc = X.AllocID();
>    X.CreateGC(gc, win);
>
>    var rgbPixmap = X.AllocID();
>    X.CreatePixmap(rgbPixmap, win, 24, rgb.width, rgb.height);
>    X.PutImage(2, rgbPixmap, gc, rgb.width, rgb.height, 0, 0, 0, 24, rgb.data);
>
>    var rgbPicture = X.AllocID();
>    Render.CreatePicture(rgbPicture, rgbPixmap, Render.rgb24);
>    var winPicture = X.AllocID();
>    Render.CreatePicture(winPicture, win, Render.rgb24);
>
>	// Scaling of the image.
>	if (scaleImage == 'true') {
>		var matrix = [0.5,0,0,0,0.5,0,0,0,1];
>		Render.SetPictureTransform(rgbPicture, matrix);
>	}
>	
>	Render.FillRectangles(Render.PictOp.Src, winPicture, [0,255,255,0.5], [0, 0, rgb.width * 2, rgb.height * 2]);
>	
>    X.on('event', function(ev) {
>      if (ev.name == 'Expose') {
>        process.stdout.write('Got Expose event');
>        process.stdin.on('readable', () => {
>			var chunk = process.stdin.read();
>			if (chunk == '\n') {
>				process.stdout.write('Rendering image');
>				Render.Composite(Render.PictOp.Over, rgbPicture, 0, winPicture, 0, 0, 0, 0, 0, 0, rgb.width * 2, rgb.height * 2);
>			}
>        });
>      }
>    });
>  });
>});

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Attachments on bug 93816: 121193 | 121194 | 121466

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