108 lines
3.0 KiB
JavaScript
108 lines
3.0 KiB
JavaScript
import { VantComponent } from '../common/component';
|
|
import { touch } from '../mixins/touch';
|
|
import { addUnit } from '../common/utils';
|
|
VantComponent({
|
|
mixins: [touch],
|
|
props: {
|
|
disabled: Boolean,
|
|
useButtonSlot: Boolean,
|
|
activeColor: String,
|
|
inactiveColor: String,
|
|
max: {
|
|
type: Number,
|
|
value: 100
|
|
},
|
|
min: {
|
|
type: Number,
|
|
value: 0
|
|
},
|
|
step: {
|
|
type: Number,
|
|
value: 1
|
|
},
|
|
value: {
|
|
type: Number,
|
|
value: 0
|
|
},
|
|
barHeight: {
|
|
type: null,
|
|
value: '2px'
|
|
}
|
|
},
|
|
watch: {
|
|
value(value) {
|
|
this.updateValue(value, false);
|
|
}
|
|
},
|
|
created() {
|
|
this.updateValue(this.data.value);
|
|
},
|
|
methods: {
|
|
onTouchStart(event) {
|
|
if (this.data.disabled)
|
|
return;
|
|
this.touchStart(event);
|
|
this.startValue = this.format(this.data.value);
|
|
this.dragStatus = 'start';
|
|
},
|
|
onTouchMove(event) {
|
|
if (this.data.disabled)
|
|
return;
|
|
if (this.dragStatus === 'start') {
|
|
this.$emit('drag-start');
|
|
}
|
|
this.touchMove(event);
|
|
this.dragStatus = 'draging';
|
|
this.getRect('.van-slider').then((rect) => {
|
|
const diff = this.deltaX / rect.width * 100;
|
|
this.newValue = this.startValue + diff;
|
|
this.updateValue(this.newValue, false, true);
|
|
});
|
|
},
|
|
onTouchEnd() {
|
|
if (this.data.disabled)
|
|
return;
|
|
if (this.dragStatus === 'draging') {
|
|
this.updateValue(this.newValue, true);
|
|
this.$emit('drag-end');
|
|
}
|
|
},
|
|
onClick(event) {
|
|
if (this.data.disabled)
|
|
return;
|
|
const { min } = this.data;
|
|
this.getRect('.van-slider').then((rect) => {
|
|
const value = (event.detail.x - rect.left) / rect.width * this.getRange() + min;
|
|
this.updateValue(value, true);
|
|
});
|
|
},
|
|
updateValue(value, end, drag) {
|
|
value = this.format(value);
|
|
const { barHeight, min } = this.data;
|
|
const width = `${((value - min) * 100) / this.getRange()}%`;
|
|
this.setData({
|
|
value,
|
|
barStyle: `
|
|
width: ${width};
|
|
height: ${addUnit(barHeight)};
|
|
${drag ? 'transition: none;' : ''}
|
|
`,
|
|
});
|
|
if (drag) {
|
|
this.$emit('drag', { value });
|
|
}
|
|
if (end) {
|
|
this.$emit('change', value);
|
|
}
|
|
},
|
|
getRange() {
|
|
const { max, min } = this.data;
|
|
return max - min;
|
|
},
|
|
format(value) {
|
|
const { max, min, step } = this.data;
|
|
return Math.round(Math.max(min, Math.min(value, max)) / step) * step;
|
|
}
|
|
}
|
|
});
|