antd-mini
Version:
antd-mini 是支付宝小程序 UI 组件库,遵循 Ant Design 规范。
83 lines (82 loc) • 3.59 kB
JavaScript
import { __awaiter, __generator } from "tslib";
import { getInstanceBoundingClientRect } from '../_util/jsapi/get-instance-bounding-client-rect';
import { Component, getValueFromProps } from '../_util/simply';
import { AutoResizeDefaultProps } from './props';
Component(AutoResizeDefaultProps, {
getInstance: function () {
if (this.$id) {
return my;
}
return this;
},
getBoundingClientRect: function (query) {
return __awaiter(this, void 0, void 0, function () {
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, getInstanceBoundingClientRect(this.getInstance(), query)];
case 1: return [2 /*return*/, _a.sent()];
}
});
});
},
adjustFontSize: function () {
var _this = this;
// 用createSelectorQuery来获取容器尺寸信息
this.getBoundingClientRect('.ant-autoresize-fontsize-container').then(function (rect) {
if (!rect)
return;
var _a = getValueFromProps(_this, [
'text',
'maxFontSize',
'ratio',
]), text = _a[0], maxFontSize = _a[1], ratio = _a[2];
// 假设自适应逻辑是基于容器宽度来设置字号
var containerWidth = rect.width;
var textLength = text.length;
/** 判断是否还有空隙 总宽度 - 字体宽度 > 0 */
var hasSpace = containerWidth - (maxFontSize / ratio) * textLength > 0;
if (!hasSpace) {
_this.checkTextOverflow();
}
});
},
// 检查是否超长
checkTextOverflow: function () {
var _this = this;
// 子组件插槽的类名是default-slot
Promise.all([
this.getBoundingClientRect('.ant-autoresize-slot'),
this.getBoundingClientRect('.ant-autoresize-fontsize-container'),
]).then(function (rects) {
var textRect = rects[0];
var containerRect = rects[1];
if (textRect && containerRect) {
var _a = getValueFromProps(_this, [
'wrap',
'minFontSize',
]), wrap = _a[0], minFontSize = _a[1];
var newStyle = '';
// 如果容器宽度小于文本宽度,且容器高度支持换行,则换行;
// wrap为true时,文案超长会换行,注意样式如margin-top重叠
if (containerRect.height / 2 > textRect.height || wrap) {
newStyle = "font-size: ".concat(minFontSize, "rpx; overflow: visible; white-space: pre-wrap; word-wrap: break-word; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;");
}
else {
// 如果不支持换行,则直接出现省略号;
newStyle = "font-size: ".concat(minFontSize, "rpx; max-width: ").concat(textRect.width, "px; width: ").concat(textRect.width, "px; overflow: hidden; display: inline-block; text-overflow: ellipsis; white-space: nowrap; -webkit-box-orient: vertical;");
}
// 设置样式...
_this.setData({
wrapAndEllipsisStyle: newStyle,
});
}
});
},
}, {
/** 换行或省略号样式 */
wrapAndEllipsisStyle: '',
}, undefined, {
didMount: function () {
this.adjustFontSize();
},
});