widget-icon-btn.vue
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<template>
<div class="icon-btn" @click="onClick" :style="btnStyle">
<i class="iconfont" :class="iconClass" :style="iconStyle"></i>
<span v-if="text" class="icon-btn-text" :style="textStyle">{{text}}</span>
</div>
</template>
<script>
import { pxToRem } from '../../../utils/helpers.js';
const classMap = {
fav: {
default: 'icon-zan',
selected: 'icon-zan-fill'
},
star: {
default: 'icon-star',
selected: 'icon-star-fill'
},
share: {
default: 'icon-share'
},
msg: {
default: 'icon-msg'
}
};
const defaultOption = {
canSelect: true, // 是否支持选中
selected: false, // 初始选中状态（不受是否支持选中控制）
color: '#444', // btn字体颜色
selectedColor: '#444', // btn选中状态字体颜色（不设置默认与非选中一致）
iconFontSize: 48, // icon字号（单位px）
textFontSize: 20, // text字号（单位px）
textAlign: 'top', // text位置, 默认normal（支持normal, top, bottom）
textZoom: 0.9, // text缩放
textAutoChange: false, // text自动增减，只支持number类型（受是否支持选中控制）
emitName: '' // 点击触发事件名称
};
export default {
name: 'WidgetIconBtn',
props: {
type: {
type: String,
default: 'fav'
},
text: String,
option: {
type: Object,
default() {
return defaultOption;
}
}
},
data() {
return {
btnSelected: false,
actionClass: ''
}
},
computed: {
btnStyle() {
let color = this.option.color || defaultOption.color;
return `color: ${this.btnSelected ? (this.option.selectedColor || color) : color};`;
},
iconClass() {
if (this.actionClass) {
return this.actionClass;
}
if (!this.iconObj) {
this._icon = classMap[this.type] || classMap.fav;
}
if (this.option.selected) {
this.btnSelected = true;
return this._icon.selected || this._icon.default;
}
return this._icon.default;
},
iconStyle() {
return `font-size: ${pxToRem(this.option.iconFontSize || defaultOption.iconFontSize)};`;
},
textStyle() {
let style = `font-size: ${pxToRem(this.option.textFontSize || defaultOption.textFontSize)};`;
if (['top', 'bottom'].indexOf(this.option.textAlign) >= 0) {
style += ` vertical-align: ${this.option.textAlign};`;
}
if (Number(this.option.textZoom) !== NaN) {
style += `transform: scale(${this.option.textZoom}, ${this.option.textZoom});`
}
return style;
}
},
methods: {
onClick(evt) {
if (this.option.canSelect) {
this.btnSelected = !this.btnSelected;
if (Number(this.text) !== NaN) {
this.text = Number(this.text) + (this.btnSelected ? 1 : -1);
}
if (this._icon.selected) {
this.actionClass = this.btnSelected ? this._icon.selected : this._icon.default;
}
}
this.option.emitName && this.$emit(this.option.emitName, evt);
}
},
};
</script>
<style type="css">
.icon-btn {
display: inline-block;
line-height: 1;
vertical-align: middle;
> * {
display: inline-block;
vertical-align: middle;
}
.icon-btn-text {
line-height: 1.3;
}
}
</style>