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<script>
import _ from 'underscore';
import { numberToHumanSize } from '../../../../lib/utils/number_utils';
export default {
props: {
path: {
type: String,
required: true,
},
fileSize: {
type: Number,
required: false,
default: 0,
},
renderInfo: {
type: Boolean,
default: true,
},
innerCssClasses: {
type: [Array, Object, String],
required: false,
default: '',
},
},
data() {
return {
width: 0,
height: 0,
isLoaded: false,
};
},
computed: {
fileSizeReadable() {
return numberToHumanSize(this.fileSize);
},
dimensionStyles() {
if (!this.isLoaded) return {};
return {
width: `${this.width}px`,
height: `${this.height}px`,
};
},
hasFileSize() {
return this.fileSize > 0;
},
hasDimensions() {
return this.width && this.height;
},
},
beforeDestroy() {
window.removeEventListener('resize', this.resizeThrottled, false);
},
mounted() {
// The onImgLoad may have happened before the control was actually mounted
this.onImgLoad();
this.resizeThrottled = _.throttle(this.onImgLoad, 400);
window.addEventListener('resize', this.resizeThrottled, false);
},
methods: {
onImgLoad() {
requestIdleCallback(this.calculateImgSize, { timeout: 1000 });
},
calculateImgSize() {
const { contentImg } = this.$refs;
if (contentImg) {
this.width = contentImg.naturalWidth;
this.height = contentImg.naturalHeight;
this.$nextTick(() => {
this.isLoaded = true;
this.$emit('imgLoaded', {
width: this.width,
height: this.height,
renderedWidth: contentImg.clientWidth,
renderedHeight: contentImg.clientHeight,
});
});
}
},
},
};
</script>
<template>
<div>
<div
:class="innerCssClasses"
:style="dimensionStyles"
class="position-relative"
>
<img
ref="contentImg"
:src="path"
@load="onImgLoad"
/>
<slot name="image-overlay"></slot>
</div>
<p
v-if="renderInfo"
class="image-info"
>
<template v-if="hasFileSize">
{{ fileSizeReadable }}
</template>
<template v-if="hasFileSize && hasDimensions">
|
</template>
<template v-if="hasDimensions">
<strong>W</strong>: {{ width }} | <strong>H</strong>: {{ height }}
</template>
</p>
</div>
</template>
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