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<script>
import { throttle } from 'lodash';
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,
required: false,
},
innerCssClasses: {
type: [Array, Object, String],
required: false,
default: '',
},
},
data() {
return {
width: 0,
height: 0,
renderedWidth: 0,
renderedHeight: 0,
};
},
computed: {
fileSizeReadable() {
return numberToHumanSize(this.fileSize);
},
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.renderedWidth = contentImg.clientWidth;
this.renderedHeight = contentImg.clientHeight;
this.$emit('imgLoaded', {
width: this.width,
height: this.height,
renderedWidth: this.renderedWidth,
renderedHeight: this.renderedHeight,
});
});
}
},
},
};
</script>
<template>
<div data-testid="image-viewer">
<div :class="innerCssClasses" class="position-relative">
<img ref="contentImg" :src="path" @load="onImgLoad" />
<slot
name="image-overlay"
:rendered-width="renderedWidth"
:rendered-height="renderedHeight"
></slot>
</div>
<p v-if="renderInfo" class="image-info">
<template v-if="hasFileSize">
{{ fileSizeReadable }}
</template>
<template v-if="hasFileSize && hasDimensions">
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</template>
<template v-if="hasDimensions">
<strong>{{ s__('ImageViewerDimensions|W') }}</strong
>: {{ width }} | <strong>{{ s__('ImageViewerDimensions|H') }}</strong
>: {{ height }}
</template>
</p>
</div>
</template>
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