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add wheel scrolling detection #24

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add wheel scrolling detection #24

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2 changes: 1 addition & 1 deletion demo/App.vue
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Original file line number Diff line number Diff line change
Expand Up @@ -8,7 +8,7 @@
:side="300"
:circleWidth="20"
:knobRadius="20"
:stepSize="10"
:stepSize="1"
>
</circle-slider>
<div class="value"> {{ sliderValue }} </div>
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10 changes: 10 additions & 0 deletions src/components/CircleSlider.vue
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Original file line number Diff line number Diff line change
Expand Up @@ -36,6 +36,11 @@ export default {
this.containerElement = this.$refs._svg
this.sliderTolerance = this.radius / 2
this.setNewPosition({x: 0, y: 0})

this.containerElement.addEventListener('wheel', this.handleWheelScroll)
},
beforeDestroy () {
this.containerElement.removeEventListener('wheel', this.handleWheelScroll)
},
props: {
startAngleOffset: {
Expand Down Expand Up @@ -327,6 +332,11 @@ export default {
const dimensions = this.containerElement.getBoundingClientRect()
this.relativeX = e.clientX - dimensions.left
this.relativeY = e.clientY - dimensions.top
},
handleWheelScroll (e) {
e.preventDefault()
const valueFromScroll = e.wheelDelta > 0 ? this.value + this.stepSize : this.value - this.stepSize
this.updateFromPropValue(valueFromScroll)
}
},
watch: {
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