37 lines
838 B
JavaScript
37 lines
838 B
JavaScript
/*
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* GCFunction usage example
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*/
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var x11 = require('../../lib');
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x11.createClient(function(err, display) {
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var X = display.client;
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var root = display.screen[0].root;
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var white = display.screen[0].white_pixel;
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var black = display.screen[0].black_pixel;
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var wid = X.AllocID();
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X.CreateWindow(wid, root, 0, 0, 400, 300, 0, 0, 0, 0, {
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backgroundPixel: black,
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eventMask: x11.eventMask.ButtonPress|x11.eventMask.Exposure });
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var gc = X.AllocID();
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X.CreateGC(gc, wid, {foreground : white, 'function' : x11.gcFunction.GXinvert});
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X.MapWindow(wid);
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X.on('event', function(ev) {
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if (ev.type === 12) {
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X.PolyFillRectangle(wid, gc, [0, 0, 400, 300]);
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}
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if (ev.type === 4) {
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var x = ev.x;
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var y = ev.y;
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X.PolyFillRectangle(wid, gc, [x - 25, y - 25, 50, 50]);
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}
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});
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});
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