XC-MISC extension

lib/x11/ext/xc-misc.js

@@ -0,0 +1,68 @@
+// http://www.x.org/releases/X11R7.6/doc/xcmiscproto/xc-misc.pdf
+
+var x11 = require('..');
+// TODO: move to templates
+
+exports.requireExt = function(display, callback) 
+{
+    var X = display.client;
+    X.QueryExtension('XC-MISC', function(err, ext) {  
+
+        if (!ext.present)
+            callback(new Error('extension not available'));
+
+        ext.QueryVersion = function(clientMaj, clientMin, cb)
+        {
+            X.seq_num++;
+            X.pack_stream.pack('CCSSS', [ext.majorOpcode, 0, 2, clientMaj, clientMin]);
+            X.replies[X.seq_num] = [
+                function(buf, opt) {
+                    var res = buf.unpack('SS');                 
+                    return res;
+                },
+                cb
+            ];
+            X.pack_stream.flush();
+        }
+
+        ext.GetXIDRange = function(cb)
+        {
+            X.seq_num++;
+            X.pack_stream.pack('CCS', [ext.majorOpcode, 1, 1]);
+            X.replies[X.seq_num] = [
+                function(buf, opt) {
+                    var res = buf.unpack('LL'); 
+                    return {
+                        startId: res[0],
+                        count: res[1]
+                    };
+                },
+                cb
+            ];
+            X.pack_stream.flush();
+        }
+
+        ext.GetXIDList = function( count, cb )
+        {
+            X.seq_num++;
+            X.pack_stream.pack('CCSL', [ext.majorOpcode, 2, 2, count]);
+            X.replies[X.seq_num] = [
+                function(buf, opt) {
+                    var numIds = buf.unpack('L')[0];
+                    var res = [];
+                    for (var i = 0; i < numIds; ++i)
+                        res.push(buf.unpack('L', 24+i*4));
+                    return res;
+                },
+                cb
+            ];
+            X.pack_stream.flush();
+        }
+
+        ext.QueryVersion(1, 1, function(err, vers) {
+            ext.major = vers[0];
+            ext.minor = vers[1];
+            callback(ext);
+        });
+    });
+}

test/xcmisc.js

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+var x11 = require('../lib/x11');
+
+x11.createClient(function(display) {
+    var X = display.client;
+    var root = display.screen[0].root;
+    X.require('xc-misc', function(Misc) {
+        var xid = X.AllocID();
+        console.log("first ID from connection: " + xid);
+        debugger;
+        Misc.GetXIDRange(function(err, range) {
+           console.log("ID range from GetIDRange: [start:" + range.startId + ", count: " + range.count + "]");
+        });
+        Misc.GetXIDList(100, function(err, list) {
+           console.log("ID list from GetIDList(100) : " + list);
+        });
+    });
+    X.on('error', function(err) { console.log("Error", err); });
+ 
+});