PolyLine, QueryExtensions requests

lib/x11/corereqs.js

@@ -200,6 +200,7 @@ module.exports = {
        [ 'CxSL', [17, 2] ],
        function(buf) {
           var nameLen = buf.unpack('S')[0];
+          // Atom value starting from 24th byte in the buffer
           return buf.unpackString(nameLen, 24);
        }   
    ],
@@ -233,6 +234,23 @@ module.exports = {
        }
    ],
 
+   PolyLine: [
+       // TODO: remove copy-paste - exectly same as PolyPoint, only differ with opcode
+       function(coordMode, drawable, gc, points)
+       {
+          var format = 'CCSLL';
+          var args = [65, coordMode, 3+points.length, drawable, gc];
+          for (var i=0; i < points.length; ++i)
+          {
+              format += 'S';
+              args.push(points[i]);
+          }
+          console.error([format, args]);
+          return [format, args];
+       }
+       
+   ], 
+  
    PolyText8: [
        function(drawable, gc, x, y, items) {
           var format = 'CxSLLSS';
@@ -265,5 +283,24 @@ module.exports = {
           args.push(pad);
           return [format, args];
        }
+   ],
+   
+   ListExtensions: [
+       [ 'CxS', [99, 1] ],
+
+       function(buf) {
+          // TODO: move to buffer.unpackStringList
+          var res = [];
+          var off = 24;
+          while (off < buf.length)
+          {
+              var len = buf[off++];
+              if (len == 0)
+                  break;
+              res.push(buf.unpackString(len, off));
+              off += len;
+          }
+          return res;
+       }  
    ] 
 }

test/listext.js

@@ -0,0 +1,8 @@
+var x11 = require('../lib/x11');
+var X = x11.createClient();
+X.on('connect', function(display) {
+    X.ListExtensions(function(list) {
+        console.log(list);
+        X.close();
+    });
+});

test/polyline.js

@@ -0,0 +1,52 @@
+var x11 = require('../lib/x11');
+
+var xclient = x11.createClient();
+var Exposure = x11.eventMask.Exposure;
+var PointerMotion = x11.eventMask.PointerMotion;
+var pts = [100, 1000, 10, 20, 10, 0, 0, 3];
+
+var prevPoint;
+
+xclient.on('connect', function(display) {
+    var X = this;
+    var root = display.screen[0].root;
+    var white = display.screen[0].white_pixel;
+    var black = display.screen[0].black_pixel;
+
+    var wid = X.AllocID();
+    X.CreateWindow(
+       wid, root, 
+       10, 10, 400, 300, 
+       1, 1, 0,
+       { 
+           backgroundPixel: white, eventMask: Exposure|PointerMotion  
+       }
+    );
+    X.MapWindow(wid);
+  
+    var gc = X.AllocID();
+    X.CreateGC(gc, wid, { foreground: black, background: white } );
+    
+    X.on('event', function(ev) {
+        if (ev.type == 12)
+        {
+            if (pts.length > 2)
+                X.PolyLine(0, wid, gc, pts);
+        } else if (ev.type == 6) {
+            //pts.push(ev.x);
+            //pts.push(ev.y);
+
+            //if (prevPoint)
+            //    X.PolyLine(0, wid, gc, [prevPoint.x, prevPoint.y, ev.x, ev.y]);
+            //
+            //prevPoint = { x: ev.x, y: ev.y };
+       
+            //if (pts.length > 2)
+            //    X.PolyLine(0, wid, gc, pts);
+        }
+    });
+
+    X.on('error', function(e) {
+        console.log(e);
+    });
+});