public int getBorderSize() {
        return mMarkDrawable.getBorderSize();
    }
This is CheckBox widget
The widget extend view widget
<p>
<p><strong>XML attributes</strong></p>
<p>
See {@link net.qiujuer.genius.ui.R.styleable#CheckBox_gBorderSize Attributes},
{@link net.qiujuer.genius.ui.R.styleable#CheckBox_gFont Attributes},
{@link net.qiujuer.genius.ui.R.styleable#CheckBox_gIntervalSize Attributes}
{@link net.qiujuer.genius.ui.R.styleable#CheckBox_gMarkColor Attributes}
{@link net.qiujuer.genius.ui.R.styleable#CheckBox_gMarkSize Attributes}
caprice/ui/src/main/java/net/qiujuer/genius/ui/widget/CheckBox.java