Add Element.getBoundingClientRect(), see

https://github.com/konsoletyper/teavm/issues/125

teavm-dom/src/main/java/org/teavm/dom/html/HTMLElement.java

@@ -108,4 +108,6 @@ public interface HTMLElement extends Element, ElementCSSInlineStyle, EventTarget
 
     @JSProperty
     void setInnerHTML(String content);
+
+    TextRectangle getBoundingClientRect();
 }

teavm-dom/src/main/java/org/teavm/dom/html/TextRectangle.java

@@ -0,0 +1,43 @@
+/*
+ *  Copyright 2015 Alexey Andreev.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+package org.teavm.dom.html;
+
+import org.teavm.jso.JSObject;
+import org.teavm.jso.JSProperty;
+
+/**
+ *
+ * @author Alexey Andreev
+ */
+public interface TextRectangle extends JSObject {
+    @JSProperty
+    int getLeft();
+
+    @JSProperty
+    int getRight();
+
+    @JSProperty
+    int getTop();
+
+    @JSProperty
+    int getBottom();
+
+    @JSProperty
+    int getWidth();
+
+    @JSProperty
+    int getHeight();
+}