Mon 21 Jul 22:43:21 CEST 2025

js/x11/examples/hello.js

@@ -0,0 +1,55 @@
+var x11 = require('../core/x11');
+
+var Exposure = x11.eventMask.Exposure;
+var PointerMotion = x11.eventMask.PointerMotion;
+var KeyPress = x11.eventMask.KeyPress;
+var ButtonPress = x11.eventMask.ButtonPress;
+var ButtonRelease= x11.eventMask.ButtonRelease;
+
+x11.createClient(function(err, display) {
+  if (!err) {
+    var X = display.client;
+    var root = display.screen[0].root;
+    var wid = X.AllocID();
+    X.CreateWindow(
+      wid,
+      root, // new window id, parent
+      0,
+      0,
+      400,
+      500, // x, y, w, h
+      0,
+      0,
+      0,
+      0, // border, depth, class, visual
+      { eventMask: Exposure | PointerMotion | KeyPress | ButtonPress | ButtonRelease} // other parameters
+    );
+    X.MapWindow(wid);
+    var gc = X.AllocID();
+    X.CreateGC(gc, wid);
+    var white = display.screen[0].white_pixel;
+    var black = display.screen[0].black_pixel;
+    cidBlack = X.AllocID();
+    cidWhite = X.AllocID();
+    X.CreateGC(cidBlack, wid, { foreground: black, background: white });
+    X.CreateGC(cidWhite, wid, { foreground: white, background: black });
+    X.on('event', function(ev) {
+      // print(ev)
+      switch (ev.type) {
+        case x11.eventType.Expose:
+          X.PolyFillRectangle(wid, cidWhite, [0, 0, 500, 500]);
+          X.PolyText8(wid, cidBlack, 50, 50, ['Hello World, Node.JS!']);
+          X.PolyText8(wid, cidBlack, 50, 70, ['New line']);
+          break;
+        case x11.eventType.KeyPress:
+          if (ev.keycode == 24 /*q*/) process.exit()
+          break;  
+      }
+    });
+    X.on('error', function(e) {
+      console.log(e);
+    });
+  } else {
+    console.log(err);
+  }
+});