Improve emoji picker performance (#275)
ci/woodpecker/push/woodpecker Pipeline was successful
Details
ci/woodpecker/push/woodpecker Pipeline was successful
Details
A simple virtual scroller is now used for the emoji grid. This avoids loading all emoji images at once, saving network bandwidth and reducing load on the server, while also putting less work on the browser's DOM and layout engine. Co-authored-by: yan <yan@omg.lol> Reviewed-on: #275 Co-authored-by: yanchan09 <yan@omg.lol> Co-committed-by: yanchan09 <yan@omg.lol>pull/279/head
parent
88d5149db5
commit
9e04e4fd80
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@ -0,0 +1,133 @@
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const EMOJI_SIZE = 32 + 8
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const GROUP_TITLE_HEIGHT = 24
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const BUFFER_SIZE = 3 * EMOJI_SIZE
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const EmojiGrid = {
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props: {
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groups: {
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required: true,
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type: Array
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}
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},
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data () {
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return {
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containerWidth: 0,
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containerHeight: 0,
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scrollPos: 0,
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resizeObserver: null
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}
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},
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mounted () {
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const rect = this.$refs.container.getBoundingClientRect()
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this.containerWidth = rect.width
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this.containerHeight = rect.height
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this.resizeObserver = new ResizeObserver((entries) => {
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for (const entry of entries) {
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this.containerWidth = entry.contentRect.width
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this.containerHeight = entry.contentRect.height
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}
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})
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this.resizeObserver.observe(this.$refs.container)
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},
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beforeUnmount () {
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this.resizeObserver.disconnect()
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this.resizeObserver = null
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},
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watch: {
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groups () {
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// Scroll to top when grid content changes
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if (this.$refs.container) {
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this.$refs.container.scrollTo(0, 0)
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}
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},
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activeGroup (group) {
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this.$emit('activeGroup', group)
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}
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},
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methods: {
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onScroll () {
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this.scrollPos = this.$refs.container.scrollTop
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},
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onEmoji (emoji) {
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this.$emit('emoji', emoji)
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},
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scrollToItem (itemId) {
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const container = this.$refs.container
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if (!container) return
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for (const item of this.itemList) {
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if (item.id === itemId) {
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container.scrollTo(0, item.position.y)
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return
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}
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}
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}
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},
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computed: {
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// Total height of scroller content
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gridHeight () {
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if (this.itemList.length === 0) return 0
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const lastItem = this.itemList[this.itemList.length - 1]
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return (
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lastItem.position.y +
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('title' in lastItem ? GROUP_TITLE_HEIGHT : EMOJI_SIZE)
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)
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},
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activeGroup () {
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const items = this.itemList
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for (let i = items.length - 1; i >= 0; i--) {
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const item = items[i]
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if ('title' in item && item.position.y <= this.scrollPos) {
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return item.id
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}
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}
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return null
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},
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itemList () {
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const items = []
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let x = 0
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let y = 0
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for (const group of this.groups) {
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items.push({ position: { x, y }, id: group.id, title: group.text })
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if (group.text.length) {
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y += GROUP_TITLE_HEIGHT
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}
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for (const emoji of group.emojis) {
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items.push({
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position: { x, y },
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id: `${group.id}-${emoji.displayText}`,
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emoji
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})
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x += EMOJI_SIZE
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if (x + EMOJI_SIZE > this.containerWidth) {
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y += EMOJI_SIZE
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x = 0
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}
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}
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if (x > 0) {
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y += EMOJI_SIZE
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x = 0
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}
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}
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return items
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},
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visibleItems () {
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const startPos = this.scrollPos - BUFFER_SIZE
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const endPos = this.scrollPos + this.containerHeight + BUFFER_SIZE
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return this.itemList.filter((i) => {
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return i.position.y >= startPos && i.position.y < endPos
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})
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},
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scrolledClass () {
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if (this.scrollPos <= 5) {
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return 'scrolled-top'
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} else if (this.scrollPos >= this.gridHeight - this.containerHeight - 5) {
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return 'scrolled-bottom'
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} else {
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return 'scrolled-middle'
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}
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}
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}
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}
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export default EmojiGrid
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@ -0,0 +1,60 @@
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.emoji {
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&-grid {
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flex: 1 1 1px;
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position: relative;
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overflow: auto;
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user-select: none;
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mask: linear-gradient(to top, white 0, transparent 100%) bottom no-repeat,
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linear-gradient(to bottom, white 0, transparent 100%) top no-repeat,
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linear-gradient(to top, white, white);
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transition: mask-size 150ms;
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mask-size: 100% 20px, 100% 20px, auto;
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// Autoprefixed seem to ignore this one, and also syntax is different
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-webkit-mask-composite: xor;
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mask-composite: exclude;
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&.scrolled {
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&-top {
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mask-size: 100% 20px, 100% 0, auto;
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}
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&-bottom {
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mask-size: 100% 0, 100% 20px, auto;
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}
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}
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margin-left: 5px;
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min-height: 200px;
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}
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&-group-title {
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position: absolute;
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font-size: 0.85em;
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width: 100%;
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margin: 0;
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height: 24px;
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display: flex;
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align-items: end;
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&.disabled {
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display: none;
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}
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}
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&-item {
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position: absolute;
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width: 32px;
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height: 32px;
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box-sizing: border-box;
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display: flex;
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font-size: 32px;
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align-items: center;
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justify-content: center;
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margin: 4px;
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cursor: pointer;
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img {
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object-fit: contain;
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max-width: 100%;
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max-height: 100%;
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}
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}
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}
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@ -0,0 +1,48 @@
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<template>
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<div
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ref="container"
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class="emoji-grid"
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:class="scrolledClass"
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@scroll.passive="onScroll"
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>
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<div
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:style="{
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height: `${gridHeight}px`,
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}"
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>
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<template v-for="item in visibleItems">
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<h6
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v-if="'title' in item && item.title.length"
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:key="'title-' + item.id"
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class="emoji-group-title"
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:style="{
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top: item.position.y + 'px',
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left: item.position.x + 'px'
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}"
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>
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{{ item.title }}
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</h6>
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<span
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v-else-if="'emoji' in item"
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:key="'emoji-' + item.id"
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class="emoji-item"
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:title="item.emoji.displayText"
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:style="{
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top: item.position.y + 'px',
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left: item.position.x + 'px'
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}"
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@click.stop.prevent="onEmoji(item.emoji)"
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>
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<span v-if="!item.emoji.imageUrl">{{ item.emoji.replacement }}</span>
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<img
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v-else
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:src="item.emoji.imageUrl"
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>
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</span>
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</template>
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</div>
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</div>
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</template>
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<script src="./emoji_grid.js"></script>
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<style lang="scss" src="./emoji_grid.scss"></style>
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@ -205,7 +205,6 @@ const EmojiInput = {
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},
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triggerShowPicker () {
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this.showPicker = true
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this.$refs.picker.startEmojiLoad()
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this.$nextTick(() => {
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this.scrollIntoView()
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this.focusPickerInput()
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@ -223,7 +222,6 @@ const EmojiInput = {
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this.showPicker = !this.showPicker
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if (this.showPicker) {
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this.scrollIntoView()
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this.$refs.picker.startEmojiLoad()
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this.$nextTick(this.focusPickerInput)
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}
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},
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@ -1,5 +1,6 @@
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import { defineAsyncComponent } from 'vue'
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import Checkbox from '../checkbox/checkbox.vue'
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import EmojiGrid from '../emoji_grid/emoji_grid.vue'
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import { library } from '@fortawesome/fontawesome-svg-core'
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import {
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faBoxOpen,
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@ -14,13 +15,6 @@ library.add(
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faSmileBeam
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)
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// At widest, approximately 20 emoji are visible in a row,
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// loading 3 rows, could be overkill for narrow picker
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const LOAD_EMOJI_BY = 60
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// When to start loading new batch emoji, in pixels
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const LOAD_EMOJI_MARGIN = 64
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const EmojiPicker = {
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props: {
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enableStickerPicker: {
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@ -39,16 +33,13 @@ const EmojiPicker = {
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keyword: '',
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activeGroup: 'standard',
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showingStickers: false,
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groupsScrolledClass: 'scrolled-top',
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keepOpen: false,
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customEmojiBufferSlice: LOAD_EMOJI_BY,
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customEmojiTimeout: null,
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customEmojiLoadAllConfirmed: false
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keepOpen: false
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}
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},
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components: {
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StickerPicker: defineAsyncComponent(() => import('../sticker_picker/sticker_picker.vue')),
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Checkbox
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Checkbox,
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EmojiGrid
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},
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methods: {
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onStickerUploaded (e) {
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@ -61,12 +52,6 @@ const EmojiPicker = {
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const value = emoji.imageUrl ? `:${emoji.displayText}:` : emoji.replacement
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this.$emit('emoji', { insertion: value, keepOpen: this.keepOpen })
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},
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onScroll (e) {
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const target = (e && e.target) || this.$refs['emoji-groups']
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this.updateScrolledClass(target)
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this.scrolledGroup(target)
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this.triggerLoadMore(target)
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},
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onWheel (e) {
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e.preventDefault()
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this.$refs['emoji-tabs'].scrollBy(e.deltaY, 0)
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@ -74,68 +59,12 @@ const EmojiPicker = {
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highlight (key) {
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this.setShowStickers(false)
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this.activeGroup = key
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},
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updateScrolledClass (target) {
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if (target.scrollTop <= 5) {
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this.groupsScrolledClass = 'scrolled-top'
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} else if (target.scrollTop >= target.scrollTopMax - 5) {
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this.groupsScrolledClass = 'scrolled-bottom'
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} else {
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this.groupsScrolledClass = 'scrolled-middle'
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if (this.keyword.length) {
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this.$refs.emojiGrid.scrollToItem(key)
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}
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},
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triggerLoadMore (target) {
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const ref = this.$refs['group-end-custom']
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if (!ref) return
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const bottom = ref.offsetTop + ref.offsetHeight
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const scrollerBottom = target.scrollTop + target.clientHeight
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const scrollerTop = target.scrollTop
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const scrollerMax = target.scrollHeight
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// Loads more emoji when they come into view
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const approachingBottom = bottom - scrollerBottom < LOAD_EMOJI_MARGIN
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// Always load when at the very top in case there's no scroll space yet
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const atTop = scrollerTop < 5
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// Don't load when looking at unicode category or at the very bottom
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const bottomAboveViewport = bottom < scrollerTop || scrollerBottom === scrollerMax
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if (!bottomAboveViewport && (approachingBottom || atTop)) {
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this.loadEmoji()
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}
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},
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scrolledGroup (target) {
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const top = target.scrollTop + 5
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this.$nextTick(() => {
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this.emojisView.forEach(group => {
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const ref = this.$refs['group-' + group.id]
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if (ref.offsetTop <= top) {
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this.activeGroup = group.id
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}
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})
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})
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},
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loadEmoji () {
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const allLoaded = this.customEmojiBuffer.length === this.filteredEmoji.length
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if (allLoaded) {
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return
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}
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this.customEmojiBufferSlice += LOAD_EMOJI_BY
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},
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startEmojiLoad (forceUpdate = false) {
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if (!forceUpdate) {
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this.keyword = ''
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}
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this.$nextTick(() => {
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this.$refs['emoji-groups'].scrollTop = 0
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})
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const bufferSize = this.customEmojiBuffer.length
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const bufferPrefilledAll = bufferSize === this.filteredEmoji.length
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if (bufferPrefilledAll && !forceUpdate) {
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return
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}
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this.customEmojiBufferSlice = LOAD_EMOJI_BY
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onActiveGroup (group) {
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this.activeGroup = group
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},
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toggleStickers () {
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this.showingStickers = !this.showingStickers
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@ -151,13 +80,6 @@ const EmojiPicker = {
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})
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}
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},
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watch: {
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keyword () {
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this.customEmojiLoadAllConfirmed = false
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this.onScroll()
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this.startEmojiLoad(true)
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}
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},
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computed: {
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activeGroupView () {
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return this.showingStickers ? '' : this.activeGroup
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@ -173,9 +95,6 @@ const EmojiPicker = {
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this.$store.state.instance.customEmoji || []
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)
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},
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customEmojiBuffer () {
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return this.filteredEmoji.slice(0, this.customEmojiBufferSlice)
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},
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emojis () {
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const standardEmojis = this.$store.state.instance.emoji || []
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const customEmojis = this.sortedEmoji
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@ -85,10 +85,6 @@
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flex-grow: 1;
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}
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.emoji-groups {
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min-height: 200px;
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}
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.additional-tabs {
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border-left: 1px solid;
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border-left-color: $fallback--icon;
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@ -167,76 +163,12 @@
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}
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}
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.emoji {
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&-search {
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padding: 5px;
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flex: 0 0 auto;
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.emoji-search {
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padding: 5px;
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flex: 0 0 auto;
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input {
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width: 100%;
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}
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input {
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width: 100%;
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}
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&-groups {
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flex: 1 1 1px;
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position: relative;
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overflow: auto;
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user-select: none;
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mask: linear-gradient(to top, white 0, transparent 100%) bottom no-repeat,
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linear-gradient(to bottom, white 0, transparent 100%) top no-repeat,
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linear-gradient(to top, white, white);
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transition: mask-size 150ms;
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mask-size: 100% 20px, 100% 20px, auto;
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// Autoprefixed seem to ignore this one, and also syntax is different
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-webkit-mask-composite: xor;
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mask-composite: exclude;
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&.scrolled {
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&-top {
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mask-size: 100% 20px, 100% 0, auto;
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}
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&-bottom {
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mask-size: 100% 0, 100% 20px, auto;
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}
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}
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}
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&-group {
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display: flex;
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align-items: center;
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flex-wrap: wrap;
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padding-left: 5px;
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justify-content: left;
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&-title {
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font-size: 0.85em;
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width: 100%;
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margin: 0;
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&.disabled {
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display: none;
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}
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}
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}
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&-item {
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width: 32px;
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height: 32px;
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box-sizing: border-box;
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display: flex;
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font-size: 32px;
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align-items: center;
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justify-content: center;
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margin: 4px;
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cursor: pointer;
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img {
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object-fit: contain;
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max-width: 100%;
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max-height: 100%;
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}
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}
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}
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}
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|
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@ -2,9 +2,9 @@
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<div class="emoji-picker panel panel-default panel-body">
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<div class="heading">
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<span
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ref="emoji-tabs"
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class="emoji-tabs"
|
||||
@wheel="onWheel"
|
||||
ref="emoji-tabs"
|
||||
>
|
||||
<span
|
||||
v-for="group in emojis"
|
||||
|
|
@ -51,39 +51,12 @@
|
|||
@input="$event.target.composing = false"
|
||||
>
|
||||
</div>
|
||||
<div
|
||||
ref="emoji-groups"
|
||||
class="emoji-groups"
|
||||
:class="groupsScrolledClass"
|
||||
@scroll="onScroll"
|
||||
>
|
||||
<div
|
||||
v-for="group in emojisView"
|
||||
:key="group.id"
|
||||
class="emoji-group"
|
||||
>
|
||||
<h6
|
||||
:ref="'group-' + group.id"
|
||||
class="emoji-group-title"
|
||||
>
|
||||
{{ group.text }}
|
||||
</h6>
|
||||
<span
|
||||
v-for="emoji in group.emojis"
|
||||
:key="group.id + emoji.displayText"
|
||||
:title="emoji.displayText"
|
||||
class="emoji-item"
|
||||
@click.stop.prevent="onEmoji(emoji)"
|
||||
>
|
||||
<span v-if="!emoji.imageUrl">{{ emoji.replacement }}</span>
|
||||
<img
|
||||
v-else
|
||||
:src="emoji.imageUrl"
|
||||
>
|
||||
</span>
|
||||
<span :ref="'group-end-' + group.id" />
|
||||
</div>
|
||||
</div>
|
||||
<EmojiGrid
|
||||
ref="emojiGrid"
|
||||
:groups="emojisView"
|
||||
@emoji="onEmoji"
|
||||
@active-group="onActiveGroup"
|
||||
/>
|
||||
<div
|
||||
v-if="showKeepOpen"
|
||||
class="keep-open"
|
||||
|
|
|
|||
Loading…
Reference in New Issue