【Extjs】large按钮，图片全部覆盖按钮

.x-btn-default-large-mc {
    padding-bottom:0px !important;
    padding-left:0px !important;
    padding-top:0px !important;
    padding-right:0px !important;
}

.x-btn-default-large-tc {
    height:0px !important;
}

.x-btn-default-large-tr {
    padding-right:0px !important;
}

.x-btn-default-large-tl {
    padding-left:0px !important;
}

.x-btn-default-large-bl {
    padding-left:0px !important;
}

.x-btn-default-large-br {
    padding-right:0px !important;
}

.x-btn-default-large-mr {
    padding-right:0px !important;
}

.x-btn-default-large-ml {
    padding-left:0px !important;
}

.x-btn-default-large-bc {
    height:0px !important;
}

Ext.define(‘HJ.view.Draw.DrawLineBtn‘, {
    extend: ‘Ext.Button‘,
    alias: ‘widget.DrawLineBtn‘,
    id: ‘DrawLineBtn‘,
    //text:‘折线‘,
    iconCls: ‘DrawLineBtn‘,
    scale: ‘large‘,
    iconAlign: ‘top‘,
    height: 70,
    width: 70
});