ce4c83ff
 wxy
初始提交
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<template>
<image
:mode="node.attr.mode"
:lazy-load="node.attr.lazyLoad"
:class="node.classStr"
:style="newStyleStr || node.styleStr"
:data-src="node.attr.src"
:src="node.attr.src"
@tap="wxParseImgTap"
@load="wxParseImgLoad"
/>
</template>
<script>
export default {
name: 'wxParseImg',
data() {
return {
newStyleStr: '',
preview: true,
};
},
props: {
node: {
type: Object,
default() {
return {};
},
},
},
methods: {
wxParseImgTap(e) {
if (!this.preview) return;
const { src } = e.target.dataset;
if (!src) return;
this.node.$host.preview(src, e);
},
// 图片视觉宽高计算函数区
wxParseImgLoad(e) {
const { src } = e.target.dataset;
if (!src) return;
const { width, height } = e.mp.detail;
const recal = this.wxAutoImageCal(width, height);
const { imageheight, imageWidth } = recal;
const { padding, mode } = this.node.attr;
const { styleStr } = this.node;
const imageHeightStyle = mode === 'widthFix' ? '' : `height: ${imageheight}px;`;
this.newStyleStr = `${styleStr}; ${imageHeightStyle}; width: ${imageWidth}px; padding: 0 ${+padding}px;`;
},
// 计算视觉优先的图片宽高
wxAutoImageCal(originalWidth, originalHeight) {
// 获取图片的原始长宽
const { padding } = this.node.attr;
const windowWidth = this.node.$screen.width - (2 * padding);
const results = {};
if (originalWidth < 60 || originalHeight < 60) {
const { src } = this.node.attr;
this.node.$host.removeImageUrl(src);
this.preview = false;
}
// 判断按照那种方式进行缩放
if (originalWidth > windowWidth) {
// 在图片width大于手机屏幕width时候
results.imageWidth = windowWidth;
results.imageheight = windowWidth * (originalHeight / originalWidth);
} else {
// 否则展示原来的数据
results.imageWidth = originalWidth;
results.imageheight = originalHeight;
}
return results;
},
},
};
</script>
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