214 lines
7.6 KiB
JavaScript
214 lines
7.6 KiB
JavaScript
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import { resolveComponent, openBlock, createElementBlock, createElementVNode, createVNode, withCtx, createTextVNode, toDisplayString, Fragment, renderList, normalizeStyle } from "vue";
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import { _ as _export_sfc } from "../../_plugin-vue_export-helper.js";
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const _style_0 = { "page": { "": { "flex": 1, "backgroundColor": "#f5f6fa", "height": 100 } }, "controls": { "": { "paddingTop": 20, "paddingRight": 20, "paddingBottom": 20, "paddingLeft": 20, "backgroundColor": "#ffffff" } }, "row": { "": { "flexDirection": "row", "alignItems": "center", "marginBottom": 10 } }, "btn": { "": { "paddingTop": 10, "paddingRight": 14, "paddingBottom": 10, "paddingLeft": 14, "borderRadius": 6, "backgroundColor": "#2d8cf0", "color": "#ffffff", "marginRight": 10 } }, "stat": { "": { "marginRight": 14, "fontSize": 28 } }, "hint": { "": { "color": "#888888", "fontSize": 24, "marginTop": 6 } }, "list": { "": { "flex": 1 } }, "item": { "": { "height": 160, "paddingTop": 12, "paddingRight": 12, "paddingBottom": 12, "paddingLeft": 12, "flexDirection": "row", "alignItems": "center", "borderBottomWidth": 1, "borderBottomStyle": "solid", "borderBottomColor": "rgba(0,0,0,0.06)", "backgroundColor": "#ffffff" } }, "thumb": { "": { "width": 120, "height": 120, "borderRadius": 8, "marginRight": 12 } }, "meta": { "": { "flex": 1 } }, "title": { "": { "fontSize": 30, "fontWeight": "bold", "marginBottom": 8 } }, "desc": { "": { "fontSize": 24, "color": "#666666", "lineHeight": 32 } } };
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const _sfc_main = {
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data() {
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return {
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items: [],
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// FPS 测量
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measuring: false,
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fpsDisplay: 0,
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avgFrameMsDisplay: 0,
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// 内部用
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_frames: [],
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_rafId: null,
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_idleTO: null
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};
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},
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methods: {
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generate(n) {
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const list = [];
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for (let i = 0; i < n; i++) {
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list.push({
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id: i + 1,
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color: this._randColor()
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});
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}
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this.items = list;
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this.fpsDisplay = 0;
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this.avgFrameMsDisplay = 0;
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},
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clearList() {
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this.items = [];
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this.fpsDisplay = 0;
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this.avgFrameMsDisplay = 0;
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},
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_randColor() {
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const h = Math.floor(Math.random() * 360);
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const s = 60 + Math.floor(Math.random() * 20);
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const l = 55 + Math.floor(Math.random() * 10);
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return `hsl(${h} ${s}% ${l}%)`;
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},
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// 滚动回调（来自原生 nvue scroll-view）
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onScroll(e) {
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if (!this.measuring)
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this._startMeasure();
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clearTimeout(this._idleTO);
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this._idleTO = setTimeout(() => {
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this._stopMeasure();
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}, 300);
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},
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_startMeasure() {
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this.measuring = true;
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this._frames = [];
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const pushFrame = (t) => {
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this._frames.push(t);
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if (this._frames.length > 120)
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this._frames.shift();
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this._rafId = requestAnimationFrame(pushFrame);
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};
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this._rafId = requestAnimationFrame(pushFrame);
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},
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_stopMeasure() {
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this.measuring = false;
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if (this._rafId) {
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cancelAnimationFrame(this._rafId);
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this._rafId = null;
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}
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if (this._frames.length < 2) {
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this.fpsDisplay = 0;
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this.avgFrameMsDisplay = 0;
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return;
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}
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const intervals = [];
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for (let i = 1; i < this._frames.length; i++) {
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intervals.push(this._frames[i] - this._frames[i - 1]);
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}
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const sum = intervals.reduce((a, b) => a + b, 0);
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const avg = sum / intervals.length;
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const fps = 1e3 / avg;
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this.avgFrameMsDisplay = avg.toFixed(2);
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this.fpsDisplay = Math.round(fps);
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}
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}
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};
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function _sfc_render(_ctx, _cache, $props, $setup, $data, $options) {
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const _component_button = resolveComponent("button");
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return openBlock(), createElementBlock("scroll-view", {
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scrollY: true,
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showScrollbar: true,
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enableBackToTop: true,
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bubble: "true",
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style: { flexDirection: "column" }
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}, [
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createElementVNode("div", { class: "page" }, [
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createElementVNode("div", { class: "controls" }, [
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createElementVNode("div", { class: "row" }, [
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createVNode(_component_button, {
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class: "btn",
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onClick: _cache[0] || (_cache[0] = ($event) => $options.generate(2e3))
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}, {
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default: withCtx(() => [
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createTextVNode("生成 2000 项")
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]),
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_: 1
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/* STABLE */
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}),
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createVNode(_component_button, {
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class: "btn",
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onClick: _cache[1] || (_cache[1] = ($event) => $options.generate(5e3))
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}, {
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default: withCtx(() => [
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createTextVNode("生成 5000 项")
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]),
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_: 1
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/* STABLE */
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}),
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createVNode(_component_button, {
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class: "btn",
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onClick: $options.clearList
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}, {
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default: withCtx(() => [
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createTextVNode("清空")
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]),
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_: 1
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/* STABLE */
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}, 8, ["onClick"])
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]),
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createElementVNode("div", { class: "row" }, [
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createElementVNode(
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"u-text",
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{ class: "stat" },
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"FPS: " + toDisplayString($data.fpsDisplay),
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1
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/* TEXT */
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),
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createElementVNode(
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"u-text",
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{ class: "stat" },
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"平均帧(ms): " + toDisplayString($data.avgFrameMsDisplay),
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1
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/* TEXT */
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),
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createElementVNode(
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"u-text",
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{ class: "stat" },
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"items: " + toDisplayString($data.items.length),
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1
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/* TEXT */
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)
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]),
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createElementVNode("div", { class: "hint" }, [
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createElementVNode("u-text", null, "说明：向下快速滚动列表以测试渲染/滚动性能；nvue 将使用原生渲染。")
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])
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]),
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createElementVNode(
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"scroll-view",
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{
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class: "list",
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scrollY: true,
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showScrollbar: "true",
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onScroll: _cache[2] || (_cache[2] = (...args) => $options.onScroll && $options.onScroll(...args))
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},
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[
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(openBlock(true), createElementBlock(
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Fragment,
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null,
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renderList($data.items, (item) => {
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return openBlock(), createElementBlock("div", {
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class: "item",
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key: item.id
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}, [
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createElementVNode(
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"div",
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{
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class: "thumb",
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style: normalizeStyle({ backgroundColor: item.color })
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},
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null,
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4
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/* STYLE */
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),
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createElementVNode("div", { class: "meta" }, [
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createElementVNode(
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"u-text",
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{ class: "title" },
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"Item #" + toDisplayString(item.id),
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1
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/* TEXT */
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),
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createElementVNode(
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"u-text",
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{ class: "desc" },
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"这是第 " + toDisplayString(item.id) + " 个条目，用于增加每个 DOM 的复杂度以测试渲染成本。多行文本强制布局多次换行，模拟真实列表。",
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1
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/* TEXT */
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)
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])
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]);
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}),
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128
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/* KEYED_FRAGMENT */
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))
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],
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32
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/* NEED_HYDRATION */
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)
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])
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]);
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}
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const ceshi = /* @__PURE__ */ _export_sfc(_sfc_main, [["render", _sfc_render], ["styles", [_style_0]], ["__file", "D:/hldy_app_mini/pages/login/ceshi.nvue"]]);
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export {
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ceshi as default
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};
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