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feat: add swipeable functionality (#1618)
* feat: add swipeable mixin * feat(MdDrawer): swipeable drawer * docs(MdDrawer): add swipeable prop * feat: allow dynamic swipeElement * feat: reset swiped value after touchend * feat: tweaks of default values * fix: wrong axis for restraints * feat(MdTabs): swipeable tabs * feat(MdTabs): allow swipeable only on tabs content * feat: change naming to mdSwipeElement * feat(MdDrawer): use parent of drawer as swipe element * docs: add api docs for drawer and tabs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,87 @@ | ||
| export default { | ||
| props: { | ||
| mdSwipeable: Boolean, | ||
| mdSwipeThreshold: { | ||
| type: Number, | ||
| default: 150 | ||
| }, | ||
| mdSwipeRestraint: { | ||
| type: Number, | ||
| default: 100 | ||
| }, | ||
| mdSwipeTime: { | ||
| type: Number, | ||
| default: 300 | ||
| } | ||
| }, | ||
| data: () => ({ | ||
| swipeStart: false, | ||
| swipeStartTime: null, | ||
| swiped: null, | ||
| touchPosition: { | ||
| startX: 0, | ||
| startY: 0 | ||
| } | ||
| }), | ||
| computed: { | ||
| getSwipeElement () { | ||
| return this.mdSwipeElement || window | ||
| } | ||
| }, | ||
| methods: { | ||
| handleTouchStart (event) { | ||
| this.touchPosition.startX = event.touches[0].screenX | ||
| this.touchPosition.startY = event.touches[0].screenY | ||
| this.swipeStartTime = new Date() | ||
|
|
||
| this.swipeStart = true | ||
| }, | ||
| handleTouchMove (event) { | ||
| if (!this.swipeStart) { | ||
| return | ||
| } | ||
|
|
||
| const touchmoveX = event.touches[0].screenX | ||
| const touchmoveY = event.touches[0].screenY | ||
|
|
||
| const actualX = touchmoveX - this.touchPosition.startX | ||
| const actualY = touchmoveY - this.touchPosition.startY | ||
|
|
||
| const elapsedTime = new Date() - this.swipeStartTime | ||
|
|
||
| if (elapsedTime <= this.mdSwipeTime) { | ||
| if (Math.abs(actualX) >= this.mdSwipeThreshold && Math.abs(actualY) <= this.mdSwipeRestraint) { | ||
| this.swiped = actualX < 0 | ||
| ? 'left' | ||
| : 'right' | ||
| } else if (Math.abs(actualY) >= this.mdSwipeThreshold && Math.abs(actualX) <= this.mdSwipeRestraint) { | ||
| this.swiped = actualY < 0 | ||
| ? 'up' | ||
| : 'down' | ||
| } | ||
| } | ||
| }, | ||
| handleTouchEnd () { | ||
| this.touchPosition = { | ||
| startX: 0, | ||
| startY: 0 | ||
| } | ||
| this.swiped = null | ||
| this.swipeStart = false | ||
| }, | ||
| }, | ||
| mounted () { | ||
| if (this.mdSwipeable) { | ||
| this.getSwipeElement.addEventListener('touchstart', this.handleTouchStart, false) | ||
| this.getSwipeElement.addEventListener('touchend', this.handleTouchEnd, false) | ||
| this.getSwipeElement.addEventListener('touchmove', this.handleTouchMove, false) | ||
| } | ||
| }, | ||
| beforeDestroy () { | ||
| if (this.mdSwipeable) { | ||
| this.getSwipeElement.removeEventListener('touchstart', this.handleTouchStart, false) | ||
| this.getSwipeElement.removeEventListener('touchend', this.handleTouchEnd, false) | ||
| this.getSwipeElement.removeEventListener('touchmove', this.handleTouchMove, false) | ||
| } | ||
| } | ||
| } |