edu-mini/pages/certificate/certificate.wxml

<view class='container'>
    <view class="card" style="width: {{template.drawWidth*2}}rpx; height: {{template.drawHeight*2}}rpx;">
        <edu-painter
                style="position:fixed;top:-9999rpx"
                palette="{{info}}"
                bind:imgOK="onImgOK"
        />
        <van-image src="{{image}}" width="{{template.drawWidth*2}}rpx" height="{{template.drawHeight*2}}rpx"
                   wx:if="{{isGraduated && !isPCDeviceUnkonw}}">
        </van-image>
        <van-empty description="客户端不支持证书预览!" wx:if="{{isGraduated && isPCDeviceUnkonw}}">
        </van-empty>
        <van-empty description="还没有证书，快去领取吧!" wx:if="{{!isGraduated}}">
            <view class="btn-bg">
                <edu-button title="领取证书" bind:click="produce" button-style="loginBtn"/>
            </view>
        </van-empty>
    </view>
    <view class="btn-bg">
        <edu-button title="保存证书" bind:click="save" wx:if="{{isGraduated && !isPCDeviceUnkonw}}"/>
        <edu-safe-area/>
    </view>
</view>