diff --git a/README.md b/README.md
index 2aaa393..4bf2330 100644
--- a/README.md
+++ b/README.md
@@ -9,7 +9,7 @@ var client = X11Client();
 await client.connect();
 
 var id = client.generateId();
-client.createWindow(id, client.screens[0].window, X11Rectangle(0, 0, 400, 300));
+client.createWindow(id, client.screens[0].window, X11Rectangle(width: 400, height: 300));
 await client.changePropertyString(id, 'WM_NAME', 'x11.dart');
 client.mapWindow(id);
 
diff --git a/example/dart-logo.dart b/example/dart-logo.dart
index 220c9e7..5721960 100644
--- a/example/dart-logo.dart
+++ b/example/dart-logo.dart
@@ -49,7 +49,7 @@ void main() async {
 
   var id = client.generateId();
   client.createWindow(
-      id, client.screens[0].window, X11Rectangle(0, 0, 400, 300),
+      id, client.screens[0].window, X11Rectangle(width: 400, height: 300),
       events: {X11EventType.exposure}, backgroundPixel: 0x00000000);
   await client.changePropertyString(id, 'WM_NAME', 'x11.dart');
   client.mapWindow(id);
diff --git a/example/example.dart b/example/example.dart
index 361b696..f154573 100644
--- a/example/example.dart
+++ b/example/example.dart
@@ -6,7 +6,7 @@ void main() async {
 
   var id = client.generateId();
   client.createWindow(
-      id, client.screens[0].window, X11Rectangle(0, 0, 400, 300));
+      id, client.screens[0].window, X11Rectangle(width: 400, height: 300));
   await client.changePropertyString(id, 'WM_NAME', 'x11.dart');
   client.mapWindow(id);
 
diff --git a/example/font.dart b/example/font.dart
index 6908b48..1ac55e6 100644
--- a/example/font.dart
+++ b/example/font.dart
@@ -16,7 +16,7 @@ void main() async {
   });
 
   client.createWindow(
-      window, client.screens[0].window, X11Rectangle(0, 0, 400, 300),
+      window, client.screens[0].window, X11Rectangle(width: 400, height: 300),
       events: {X11EventType.exposure}, backgroundPixel: 0x00000000);
   client.openFont(font, '*');
   client.createGC(gc, window, font: font);
diff --git a/example/window.dart b/example/window.dart
index 6c913b6..12a20ef 100644
--- a/example/window.dart
+++ b/example/window.dart
@@ -39,7 +39,7 @@ void main() async {
 
   var id = client.generateId();
   client.createWindow(
-      id, client.screens[0].window, X11Rectangle(0, 0, 400, 300),
+      id, client.screens[0].window, X11Rectangle(width: 400, height: 300),
       events: {
         X11EventType.keyPress,
         X11EventType.keyRelease,
diff --git a/lib/src/x11_client.dart b/lib/src/x11_client.dart
index 6544102..7d4d73f 100644
--- a/lib/src/x11_client.dart
+++ b/lib/src/x11_client.dart
@@ -1025,7 +1025,7 @@ class X11Client {
   int warpPointer(X11Point destination,
       {X11ResourceId destinationWindow = X11ResourceId.None,
       X11ResourceId sourceWindow = X11ResourceId.None,
-      X11Rectangle source = const X11Rectangle(0, 0, 0, 0)}) {
+      X11Rectangle source = const X11Rectangle()}) {
     var request = X11WarpPointerRequest(destination,
         destinationWindow: destinationWindow,
         sourceWindow: sourceWindow,
diff --git a/lib/src/x11_damage_events.dart b/lib/src/x11_damage_events.dart
index 5b15233..b7ce2db 100644
--- a/lib/src/x11_damage_events.dart
+++ b/lib/src/x11_damage_events.dart
@@ -34,9 +34,13 @@ class X11DamageNotifyEvent extends X11Event {
     var geometryHeight = buffer.readUint16();
     return X11DamageNotifyEvent(firstEventCode, drawable, damage,
         level: level,
-        area: X11Rectangle(areaX, areaY, areaWidth, areaHeight),
-        geometry:
-            X11Rectangle(geometryX, geometryY, geometryWidth, geometryHeight),
+        area: X11Rectangle(
+            x: areaX, y: areaY, width: areaWidth, height: areaHeight),
+        geometry: X11Rectangle(
+            x: geometryX,
+            y: geometryY,
+            width: geometryWidth,
+            height: geometryHeight),
         timestamp: timestamp);
   }
 
diff --git a/lib/src/x11_events.dart b/lib/src/x11_events.dart
index dba0a7f..2f492a6 100644
--- a/lib/src/x11_events.dart
+++ b/lib/src/x11_events.dart
@@ -501,7 +501,8 @@ class X11ExposeEvent extends X11Event {
     var height = buffer.readUint16();
     var count = buffer.readUint16();
     buffer.skip(2);
-    return X11ExposeEvent(window, X11Rectangle(x, y, width, height),
+    return X11ExposeEvent(
+        window, X11Rectangle(x: x, y: y, width: width, height: height),
         count: count);
   }
 
@@ -542,7 +543,10 @@ class X11GraphicsExposureEvent extends X11Event {
     var majorOpcode = buffer.readUint8();
     buffer.skip(3);
     return X11GraphicsExposureEvent(
-        drawable, X11Rectangle(x, y, width, height), majorOpcode, minorOpcode,
+        drawable,
+        X11Rectangle(x: x, y: y, width: width, height: height),
+        majorOpcode,
+        minorOpcode,
         count: count);
   }
 
@@ -635,7 +639,7 @@ class X11CreateNotifyEvent extends X11Event {
     var overrideRedirect = buffer.readBool();
     buffer.skip(1);
     return X11CreateNotifyEvent(
-        window, parent, X11Rectangle(x, y, width, height),
+        window, parent, X11Rectangle(x: x, y: y, width: width, height: height),
         borderWidth: borderWidth, overrideRedirect: overrideRedirect);
   }
 
@@ -827,7 +831,8 @@ class X11ConfigureNotifyEvent extends X11Event {
     var borderWidth = buffer.readUint16();
     var overrideRedirect = buffer.readBool();
     buffer.skip(1);
-    return X11ConfigureNotifyEvent(window, X11Rectangle(x, y, width, height),
+    return X11ConfigureNotifyEvent(
+        window, X11Rectangle(x: x, y: y, width: width, height: height),
         event: event,
         aboveSibling: aboveSibling,
         borderWidth: borderWidth,
@@ -878,7 +883,8 @@ class X11ConfigureRequestEvent extends X11Event {
     var height = buffer.readUint16();
     var borderWidth = buffer.readUint16();
     var valueMask = buffer.readUint16();
-    return X11ConfigureRequestEvent(window, X11Rectangle(x, y, width, height),
+    return X11ConfigureRequestEvent(
+        window, X11Rectangle(x: x, y: y, width: width, height: height),
         stackMode: stackMode,
         parent: parent,
         sibling: sibling,
@@ -1280,7 +1286,7 @@ class X11ShapeNotifyEvent extends X11Event {
   X11ShapeNotifyEvent(this.firstEventCode,
       {this.shapeKind = X11ShapeKind.bounding,
       this.affectedWindow = X11ResourceId.None,
-      this.extents = const X11Rectangle(0, 0, 0, 0),
+      this.extents = const X11Rectangle(),
       this.serverTime = 0,
       this.shaped = false});
 
@@ -1298,7 +1304,11 @@ class X11ShapeNotifyEvent extends X11Event {
     return X11ShapeNotifyEvent(firstEventCode,
         shapeKind: shapeKind,
         affectedWindow: affectedWindow,
-        extents: X11Rectangle(extentsX, extentsY, extentsWidth, extentsHeight),
+        extents: X11Rectangle(
+            x: extentsX,
+            y: extentsY,
+            width: extentsWidth,
+            height: extentsHeight),
         serverTime: serverTime,
         shaped: shaped);
   }
diff --git a/lib/src/x11_mit_screen_saver_requests.dart b/lib/src/x11_mit_screen_saver_requests.dart
index f54187c..72330b0 100644
--- a/lib/src/x11_mit_screen_saver_requests.dart
+++ b/lib/src/x11_mit_screen_saver_requests.dart
@@ -308,7 +308,7 @@ class X11ScreensaverSetAttributesRequest extends X11Request {
       cursor = buffer.readResourceId();
     }
     return X11ScreensaverSetAttributesRequest(
-        drawable, X11Rectangle(x, y, width, height),
+        drawable, X11Rectangle(x: x, y: y, width: width, height: height),
         borderWidth: borderWidth,
         windowClass: windowClass,
         depth: depth,
diff --git a/lib/src/x11_mit_shm_requests.dart b/lib/src/x11_mit_shm_requests.dart
index 8fea18e..e6ebd34 100644
--- a/lib/src/x11_mit_shm_requests.dart
+++ b/lib/src/x11_mit_shm_requests.dart
@@ -155,7 +155,7 @@ class X11MitShmPutImageRequest extends X11Request {
         drawable,
         shmseg,
         X11Size(totalWidth, totalHeight),
-        X11Rectangle(srcX, srcY, srcWidth, srcHeight),
+        X11Rectangle(x: srcX, y: srcY, width: srcWidth, height: srcHeight),
         X11Point(dstX, dstY),
         depth: depth,
         format: format,
@@ -213,8 +213,8 @@ class X11MitShmGetImageRequest extends X11Request {
     buffer.skip(3);
     var shmseg = buffer.readUint32();
     var offset = buffer.readUint32();
-    return X11MitShmGetImageRequest(
-        drawable, X11Rectangle(x, y, width, height), shmseg,
+    return X11MitShmGetImageRequest(drawable,
+        X11Rectangle(x: x, y: y, width: width, height: height), shmseg,
         planeMask: planeMask, format: format, offset: offset);
   }
 
diff --git a/lib/src/x11_randr_events.dart b/lib/src/x11_randr_events.dart
index 3992bae..9ff1968 100644
--- a/lib/src/x11_randr_events.dart
+++ b/lib/src/x11_randr_events.dart
@@ -104,7 +104,7 @@ class X11RandrCrtcChangeNotifyEvent extends X11Event {
       this.crtc = X11ResourceId.None,
       this.mode = X11ResourceId.None,
       this.rotation = const {X11RandrRotation.rotate0},
-      this.area = const X11Rectangle(0, 0, 0, 0),
+      this.area = const X11Rectangle(),
       this.timestamp = 0});
 
   factory X11RandrCrtcChangeNotifyEvent.fromBuffer(
@@ -124,7 +124,7 @@ class X11RandrCrtcChangeNotifyEvent extends X11Event {
         crtc: crtc,
         mode: mode,
         rotation: rotation,
-        area: X11Rectangle(x, y, width, height),
+        area: X11Rectangle(x: x, y: y, width: width, height: height),
         timestamp: timestamp);
   }
 
diff --git a/lib/src/x11_randr_requests.dart b/lib/src/x11_randr_requests.dart
index aabec98..ba945bb 100644
--- a/lib/src/x11_randr_requests.dart
+++ b/lib/src/x11_randr_requests.dart
@@ -1270,7 +1270,7 @@ class X11RandrGetCrtcInfoReply extends X11Reply {
   X11RandrGetCrtcInfoReply(
       {this.status = X11RandrConfigStatus.success,
       this.timestamp = 0,
-      this.area = const X11Rectangle(0, 0, 0, 0),
+      this.area = const X11Rectangle(),
       this.mode = X11ResourceId.None,
       this.rotation = 0,
       this.rotations = 0,
@@ -1294,7 +1294,7 @@ class X11RandrGetCrtcInfoReply extends X11Reply {
     return X11RandrGetCrtcInfoReply(
         status: status,
         timestamp: timestamp,
-        area: X11Rectangle(x, y, width, height),
+        area: X11Rectangle(x: x, y: y, width: width, height: height),
         mode: mode,
         rotation: rotation,
         rotations: rotations,
@@ -1881,8 +1881,8 @@ class X11RandrGetPanningReply extends X11Reply {
 
   X11RandrGetPanningReply(
       {required this.status,
-      this.area = const X11Rectangle(0, 0, 0, 0),
-      this.trackArea = const X11Rectangle(0, 0, 0, 0),
+      this.area = const X11Rectangle(),
+      this.trackArea = const X11Rectangle(),
       required this.borderLeft,
       required this.borderTop,
       required this.borderRight,
@@ -1906,8 +1906,9 @@ class X11RandrGetPanningReply extends X11Reply {
     var borderBottom = buffer.readInt16();
     return X11RandrGetPanningReply(
         status: status,
-        area: X11Rectangle(left, top, width, height),
-        trackArea: X11Rectangle(trackLeft, trackTop, trackWidth, trackHeight),
+        area: X11Rectangle(x: left, y: top, width: width, height: height),
+        trackArea: X11Rectangle(
+            x: trackLeft, y: trackTop, width: trackWidth, height: trackHeight),
         borderLeft: borderLeft,
         borderTop: borderTop,
         borderRight: borderRight,
@@ -1949,8 +1950,8 @@ class X11RandrSetPanningRequest extends X11Request {
   final int timestamp;
 
   X11RandrSetPanningRequest(this.crtc,
-      {this.area = const X11Rectangle(0, 0, 0, 0),
-      this.trackArea = const X11Rectangle(0, 0, 0, 0),
+      {this.area = const X11Rectangle(),
+      this.trackArea = const X11Rectangle(),
       this.borderLeft = 0,
       this.borderTop = 0,
       this.borderRight = 0,
@@ -1973,8 +1974,9 @@ class X11RandrSetPanningRequest extends X11Request {
     var borderRight = buffer.readInt16();
     var borderBottom = buffer.readInt16();
     return X11RandrSetPanningRequest(crtc,
-        area: X11Rectangle(left, top, width, height),
-        trackArea: X11Rectangle(trackLeft, trackTop, trackWidth, trackHeight),
+        area: X11Rectangle(x: left, y: top, width: width, height: height),
+        trackArea: X11Rectangle(
+            x: trackLeft, y: trackTop, width: trackWidth, height: trackHeight),
         borderLeft: borderLeft,
         borderTop: borderTop,
         borderRight: borderRight,
diff --git a/lib/src/x11_render_requests.dart b/lib/src/x11_render_requests.dart
index 726c1b9..5c12768 100644
--- a/lib/src/x11_render_requests.dart
+++ b/lib/src/x11_render_requests.dart
@@ -776,7 +776,7 @@ class X11RenderSetPictureClipRectanglesRequest extends X11Request {
       var y = buffer.readInt16();
       var width = buffer.readUint16();
       var height = buffer.readUint16();
-      rectangles.add(X11Rectangle(x, y, width, height));
+      rectangles.add(X11Rectangle(x: x, y: y, width: width, height: height));
     }
     return X11RenderSetPictureClipRectanglesRequest(picture, rectangles,
         clipOrigin: X11Point(clipXOrigin, clipYOrigin));
@@ -1226,7 +1226,8 @@ class X11RenderAddGlyphsRequest extends X11Request {
       var y = buffer.readInt16();
       var dx = buffer.readInt16();
       var dy = buffer.readInt16();
-      glyphs.add(X11GlyphInfo(ids[i], X11Rectangle(x, y, width, height),
+      glyphs.add(X11GlyphInfo(
+          ids[i], X11Rectangle(x: x, y: y, width: width, height: height),
           offset: X11Point(dx, dy)));
     }
     var data = buffer.readListOfUint8(buffer.remaining);
@@ -1576,7 +1577,7 @@ class X11RenderFillRectanglesRequest extends X11Request {
       var y = buffer.readInt16();
       var width = buffer.readUint16();
       var height = buffer.readUint16();
-      rectangles.add(X11Rectangle(x, y, width, height));
+      rectangles.add(X11Rectangle(x: x, y: y, width: width, height: height));
     }
     return X11RenderFillRectanglesRequest(destinationPicture, rectangles,
         op: op, color: X11Rgba(red, green, blue, alpha));
diff --git a/lib/src/x11_requests.dart b/lib/src/x11_requests.dart
index 8ff0708..101c71c 100644
--- a/lib/src/x11_requests.dart
+++ b/lib/src/x11_requests.dart
@@ -454,8 +454,8 @@ class X11CreateWindowRequest extends X11Request {
     if ((valueMask & 0x4000) != 0) {
       cursor = buffer.readResourceId();
     }
-    return X11CreateWindowRequest(
-        id, parent, X11Rectangle(x, y, width, height), depth,
+    return X11CreateWindowRequest(id, parent,
+        X11Rectangle(x: x, y: y, width: width, height: height), depth,
         windowClass: windowClass,
         visual: visual,
         borderWidth: borderWidth,
@@ -1329,7 +1329,10 @@ class X11GetGeometryReply extends X11Reply {
     var borderWidth = buffer.readUint16();
     buffer.skip(10);
     return X11GetGeometryReply(
-        root, X11Rectangle(x, y, width, height), depth, borderWidth);
+        root,
+        X11Rectangle(x: x, y: y, width: width, height: height),
+        depth,
+        borderWidth);
   }
 
   @override
@@ -2530,7 +2533,7 @@ class X11WarpPointerRequest extends X11Request {
   X11WarpPointerRequest(this.destination,
       {this.destinationWindow = X11ResourceId.None,
       this.sourceWindow = X11ResourceId.None,
-      this.source = const X11Rectangle(0, 0, 0, 0)});
+      this.source = const X11Rectangle()});
 
   factory X11WarpPointerRequest.fromBuffer(X11ReadBuffer buffer) {
     buffer.skip(1);
@@ -2545,7 +2548,8 @@ class X11WarpPointerRequest extends X11Request {
     return X11WarpPointerRequest(X11Point(destinationX, destinationY),
         destinationWindow: destinationWindow,
         sourceWindow: sourceWindow,
-        source: X11Rectangle(sourceX, sourceY, sourceWidth, sourceHeight));
+        source: X11Rectangle(
+            x: sourceX, y: sourceY, width: sourceWidth, height: sourceHeight));
   }
 
   @override
@@ -4111,7 +4115,7 @@ class X11SetClipRectanglesRequest extends X11Request {
       var y = buffer.readInt16();
       var width = buffer.readUint16();
       var height = buffer.readUint16();
-      rectangles.add(X11Rectangle(x, y, width, height));
+      rectangles.add(X11Rectangle(x: x, y: y, width: width, height: height));
     }
     return X11SetClipRectanglesRequest(gc, rectangles,
         clipOrigin: X11Point(clipXOrigin, clipYOrigin), ordering: ordering);
@@ -4171,7 +4175,8 @@ class X11ClearAreaRequest extends X11Request {
     var y = buffer.readInt16();
     var width = buffer.readUint16();
     var height = buffer.readUint16();
-    return X11ClearAreaRequest(window, X11Rectangle(x, y, width, height),
+    return X11ClearAreaRequest(
+        window, X11Rectangle(x: x, y: y, width: width, height: height),
         exposures: exposures);
   }
 
@@ -4215,7 +4220,7 @@ class X11CopyAreaRequest extends X11Request {
         sourceDrawable,
         destinationDrawable,
         gc,
-        X11Rectangle(sourceX, sourceY, width, height),
+        X11Rectangle(x: sourceX, y: sourceY, width: width, height: height),
         X11Point(destinationX, destinationY));
   }
 
@@ -4265,7 +4270,7 @@ class X11CopyPlaneRequest extends X11Request {
         sourceDrawable,
         destinationDrawable,
         gc,
-        X11Rectangle(sourceX, sourceY, width, height),
+        X11Rectangle(x: sourceX, y: sourceY, width: width, height: height),
         X11Point(destinationX, destinationY),
         bitPlane);
   }
@@ -4425,7 +4430,7 @@ class X11PolyRectangleRequest extends X11Request {
       var y = buffer.readInt16();
       var width = buffer.readUint16();
       var height = buffer.readUint16();
-      rectangles.add(X11Rectangle(x, y, width, height));
+      rectangles.add(X11Rectangle(x: x, y: y, width: width, height: height));
     }
     return X11PolyRectangleRequest(drawable, gc, rectangles);
   }
@@ -4556,7 +4561,7 @@ class X11PolyFillRectangleRequest extends X11Request {
       var y = buffer.readInt16();
       var width = buffer.readUint16();
       var height = buffer.readUint16();
-      rectangles.add(X11Rectangle(x, y, width, height));
+      rectangles.add(X11Rectangle(x: x, y: y, width: width, height: height));
     }
     return X11PolyFillRectangleRequest(drawable, gc, rectangles);
   }
@@ -4653,9 +4658,15 @@ class X11PutImageRequest extends X11Request {
     while (buffer.remaining > 0) {
       data.add(buffer.readUint8());
     }
-    return X11PutImageRequest(drawable, gc,
-        X11Rectangle(destinationX, destinationY, width, height), data,
-        format: format, depth: depth, leftPad: leftPad);
+    return X11PutImageRequest(
+        drawable,
+        gc,
+        X11Rectangle(
+            x: destinationX, y: destinationY, width: width, height: height),
+        data,
+        format: format,
+        depth: depth,
+        leftPad: leftPad);
   }
 
   @override
@@ -4698,7 +4709,8 @@ class X11GetImageRequest extends X11Request {
     var width = buffer.readUint16();
     var height = buffer.readUint16();
     var planeMask = buffer.readUint32();
-    return X11GetImageRequest(drawable, X11Rectangle(x, y, width, height),
+    return X11GetImageRequest(
+        drawable, X11Rectangle(x: x, y: y, width: width, height: height),
         format: format, planeMask: planeMask);
   }
 
@@ -7171,7 +7183,7 @@ class X11ShapeRectanglesRequest extends X11Request {
       var y = buffer.readInt16();
       var width = buffer.readUint16();
       var height = buffer.readUint16();
-      rectangles.add(X11Rectangle(x, y, width, height));
+      rectangles.add(X11Rectangle(x: x, y: y, width: width, height: height));
     }
     return X11ShapeRectanglesRequest(window, rectangles,
         operation: operation,
@@ -7356,8 +7368,8 @@ class X11ShapeQueryExtentsReply extends X11Reply {
   X11ShapeQueryExtentsReply(
       {this.boundingShaped = true,
       this.clipShaped = true,
-      this.boundingShapeExtents = const X11Rectangle(0, 0, 0, 0),
-      this.clipShapeExtents = const X11Rectangle(0, 0, 0, 0)});
+      this.boundingShapeExtents = const X11Rectangle(),
+      this.clipShapeExtents = const X11Rectangle()});
 
   static X11ShapeQueryExtentsReply fromBuffer(X11ReadBuffer buffer) {
     buffer.skip(1);
@@ -7376,12 +7388,15 @@ class X11ShapeQueryExtentsReply extends X11Reply {
         boundingShaped: boundingShaped,
         clipShaped: clipShaped,
         boundingShapeExtents: X11Rectangle(
-            boundingShapeExtentsX,
-            boundingShapeExtentsY,
-            boundingShapeExtentsWidth,
-            boundingShapeExtentsHeight),
-        clipShapeExtents: X11Rectangle(clipShapeExtentsX, clipShapeExtentsY,
-            clipShapeExtentsWidth, clipShapeExtentsHeight));
+            x: boundingShapeExtentsX,
+            y: boundingShapeExtentsY,
+            width: boundingShapeExtentsWidth,
+            height: boundingShapeExtentsHeight),
+        clipShapeExtents: X11Rectangle(
+            x: clipShapeExtentsX,
+            y: clipShapeExtentsY,
+            width: clipShapeExtentsWidth,
+            height: clipShapeExtentsHeight));
   }
 
   @override
@@ -7512,7 +7527,7 @@ class X11ShapeGetRectanglesReply extends X11Reply {
       var y = buffer.readInt16();
       var width = buffer.readUint16();
       var height = buffer.readUint16();
-      rectangles.add(X11Rectangle(x, y, width, height));
+      rectangles.add(X11Rectangle(x: x, y: y, width: width, height: height));
     }
     return X11ShapeGetRectanglesReply(rectangles, ordering: ordering);
   }
diff --git a/lib/src/x11_shape_requests.dart b/lib/src/x11_shape_requests.dart
index 3e07d71..89294c1 100644
--- a/lib/src/x11_shape_requests.dart
+++ b/lib/src/x11_shape_requests.dart
@@ -79,7 +79,7 @@ class X11ShapeRectanglesRequest extends X11Request {
       var y = buffer.readInt16();
       var width = buffer.readUint16();
       var height = buffer.readUint16();
-      rectangles.add(X11Rectangle(x, y, width, height));
+      rectangles.add(X11Rectangle(x: x, y: y, width: width, height: height));
     }
     return X11ShapeRectanglesRequest(window, rectangles,
         operation: operation,
@@ -264,8 +264,8 @@ class X11ShapeQueryExtentsReply extends X11Reply {
   X11ShapeQueryExtentsReply(
       {this.boundingShaped = true,
       this.clipShaped = true,
-      this.boundingShapeExtents = const X11Rectangle(0, 0, 0, 0),
-      this.clipShapeExtents = const X11Rectangle(0, 0, 0, 0)});
+      this.boundingShapeExtents = const X11Rectangle(),
+      this.clipShapeExtents = const X11Rectangle()});
 
   static X11ShapeQueryExtentsReply fromBuffer(X11ReadBuffer buffer) {
     buffer.skip(1);
@@ -284,12 +284,15 @@ class X11ShapeQueryExtentsReply extends X11Reply {
         boundingShaped: boundingShaped,
         clipShaped: clipShaped,
         boundingShapeExtents: X11Rectangle(
-            boundingShapeExtentsX,
-            boundingShapeExtentsY,
-            boundingShapeExtentsWidth,
-            boundingShapeExtentsHeight),
-        clipShapeExtents: X11Rectangle(clipShapeExtentsX, clipShapeExtentsY,
-            clipShapeExtentsWidth, clipShapeExtentsHeight));
+            x: boundingShapeExtentsX,
+            y: boundingShapeExtentsY,
+            width: boundingShapeExtentsWidth,
+            height: boundingShapeExtentsHeight),
+        clipShapeExtents: X11Rectangle(
+            x: clipShapeExtentsX,
+            y: clipShapeExtentsY,
+            width: clipShapeExtentsWidth,
+            height: clipShapeExtentsHeight));
   }
 
   @override
@@ -420,7 +423,7 @@ class X11ShapeGetRectanglesReply extends X11Reply {
       var y = buffer.readInt16();
       var width = buffer.readUint16();
       var height = buffer.readUint16();
-      rectangles.add(X11Rectangle(x, y, width, height));
+      rectangles.add(X11Rectangle(x: x, y: y, width: width, height: height));
     }
     return X11ShapeGetRectanglesReply(rectangles, ordering: ordering);
   }
diff --git a/lib/src/x11_types.dart b/lib/src/x11_types.dart
index 349ec3a..fcb4e88 100644
--- a/lib/src/x11_types.dart
+++ b/lib/src/x11_types.dart
@@ -860,10 +860,11 @@ class X11Rectangle {
   final int width;
   final int height;
 
-  const X11Rectangle(this.x, this.y, this.width, this.height);
+  const X11Rectangle({this.x = 0, this.y = 0, this.width = 0, this.height = 0});
 
   @override
-  String toString() => 'X11Rectangle($x, $y, $width, $height)';
+  String toString() =>
+      'X11Rectangle(x: $x, y: $y, width: $width, height: $height)';
 }
 
 class X11PictFormatInfo {
diff --git a/lib/src/x11_xfixes_requests.dart b/lib/src/x11_xfixes_requests.dart
index 16fd983..790add1 100644
--- a/lib/src/x11_xfixes_requests.dart
+++ b/lib/src/x11_xfixes_requests.dart
@@ -246,7 +246,7 @@ class X11XFixesCreateRegionRequest extends X11Request {
       var y = buffer.readInt16();
       var width = buffer.readUint16();
       var height = buffer.readUint16();
-      rectangles.add(X11Rectangle(x, y, width, height));
+      rectangles.add(X11Rectangle(x: x, y: y, width: width, height: height));
     }
     return X11XFixesCreateRegionRequest(id, rectangles);
   }
@@ -403,7 +403,7 @@ class X11XFixesSetRegionRequest extends X11Request {
       var y = buffer.readInt16();
       var width = buffer.readUint16();
       var height = buffer.readUint16();
-      rectangles.add(X11Rectangle(x, y, width, height));
+      rectangles.add(X11Rectangle(x: x, y: y, width: width, height: height));
     }
     return X11XFixesSetRegionRequest(region, rectangles);
   }
@@ -546,8 +546,8 @@ class X11XFixesInvertRegionRequest extends X11Request {
     var width = buffer.readUint16();
     var height = buffer.readUint16();
     var region = buffer.readResourceId();
-    return X11XFixesInvertRegionRequest(
-        region, X11Rectangle(x, y, width, height), sourceRegion);
+    return X11XFixesInvertRegionRequest(region,
+        X11Rectangle(x: x, y: y, width: width, height: height), sourceRegion);
   }
 
   @override
@@ -646,7 +646,7 @@ class X11XFixesFetchRegionReply extends X11Reply {
     var y = buffer.readInt16();
     var width = buffer.readUint16();
     var height = buffer.readUint16();
-    var extents = X11Rectangle(x, y, width, height);
+    var extents = X11Rectangle(x: x, y: y, width: width, height: height);
     buffer.skip(16);
     var rectangles = <X11Rectangle>[];
     while (buffer.remaining > 0) {
@@ -654,7 +654,7 @@ class X11XFixesFetchRegionReply extends X11Reply {
       var y = buffer.readInt16();
       var width = buffer.readUint16();
       var height = buffer.readUint16();
-      rectangles.add(X11Rectangle(x, y, width, height));
+      rectangles.add(X11Rectangle(x: x, y: y, width: width, height: height));
     }
     return X11XFixesFetchRegionReply(extents: extents, rectangles: rectangles);
   }