Center-crop scaling, ala scaleType=centerCrop in Android, using CSS3's object-fit property. Opera only for now.

android_layout.xml

<ImageView
    android:layout_width="100dp"
    android:layout_height="100dp"
    android:scaleType="centerCrop"
    android:src="@drawable/foo" />

html_css3.html

<img src="foo.png"
     style="width:100px;
            height:100px;
            -o-object-fit:cover;
            overflow:hidden;" />