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Mon 21 Jul 22:43:21 CEST 2025

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sbosse 2025-07-21 23:02:53 +02:00
parent 760683dad4
commit f4d3b78660
1 changed files with 65 additions and 0 deletions
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js/x11/core/examples/paint.js Normal file
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var x11 = require('../lib');
var PointerMotion = x11.eventMask.PointerMotion;
var ButtonPress = x11.eventMask.ButtonPress;
var ButtonRelease = x11.eventMask.ButtonRelease;
var X, Render;
var pressed = false;
var gradNo = 0;
var xclient = x11.createClient(function(err, display) {
X = display.client;
var root = display.screen[0].root;
X.require('render', function(err, rendExt) {
Render = rendExt;
var wid = X.AllocID();
var white = display.screen[0].white_pixel;
var black = display.screen[0].black_pixel;
X.CreateWindow(wid, root, 10, 10, 400, 300, 0, 0, 0, 0, { backgroundPixel: white, eventMask: PointerMotion|ButtonPress|ButtonRelease });
X.MapWindow(wid);
var pict = X.AllocID();
Render.CreatePicture(pict, wid, Render.rgb24);
var pictGrad = [];
for (var i=0; i < 10; ++i)
{
pictGrad[i] = X.AllocID();
Render.RadialGradient(pictGrad[i], [50,56], [50,50], 0, 50,
[
[0, [0,0,0,0x0fff ] ],
[0.1 + 0.8*i/10, [0,0,0,0x0fff ] ],
[0.997, [0xffff, 0xf, 0, 0x1] ],
[1, [0xffff, 0xffff, 0, 0x0] ]
]);
}
function draw(x, y) {
Render.Composite(3, pictGrad[gradNo], 0, pict, 0, 0, 0, 0, x-50, y-50, 100, 100);
}
X.on('event', function(ev) {
if (ev.type == 4 && ev.keycode == 1)
pressed = true;
else if (ev.type == 5 && ev.keycode == 1)
pressed = false;
else if (ev.type == 5 && ev.keycode == 4)
{
gradNo--;
if (gradNo < 0)
gradNo = 0;
console.log(gradNo);
}
else if (ev.type == 5 && ev.keycode == 5)
{
gradNo++;
if (gradNo > 9)
gradNo = 9;
console.log(gradNo);
}
else if (pressed)
draw(ev.x, ev.y);
//console.log(ev.type, ev.keycode);
});
});
});