Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

feat(picker-item): 给picker-item增加齿轮拨动效果 #2397

Open
wants to merge 1 commit into
base: develop
Choose a base branch
from
Open

feat(picker-item): 给picker-item增加齿轮拨动效果 #2397

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
32 changes: 29 additions & 3 deletions src/picker-item/picker-item.ts
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -60,6 +60,7 @@ export default class PickerItem extends SuperComponent {
onTouchStart(event) {
this.StartY = event.touches[0].clientY;
this.StartOffset = this.data.offset;
this.PrewIndex = this.data.curIndex; // 上一次Index，用于控制齿轮拨动效果
this.setData({ duration: 0 });
},

Expand All @@ -69,9 +70,28 @@ export default class PickerItem extends SuperComponent {
// touch偏移增量
const touchDeltaY = event.touches[0].clientY - StartY;
const deltaY = this.calculateViewDeltaY(touchDeltaY);
const offset = range(StartOffset + deltaY, -(this.getCount() * itemHeight), 0);

// 产生拨动齿轮的震动
if (wx.vibrateShort) {
// 当前在第几个
const index = range(Math.round(-offset / this.itemHeight), 0, this.getCount() - 1);

// 产生滚动 && 差不多到中间位置时
if (this.PrewIndex !== index && Math.abs(-offset / this.itemHeight - index) < 0.1) {
let _count = Math.abs(this.PrewIndex - index);
// 如果一次性跨多了item
while (_count > 0) {
wx.vibrateShort({ type: 'light' }); // 执行震动效果
_count -= 1;
}

this.PrewIndex = index;
}
}

this.setData({
offset: range(StartOffset + deltaY, -(this.getCount() * itemHeight), 0),
offset: offset,
duration: DefaultDuration,
});
},
Expand All @@ -80,11 +100,17 @@ export default class PickerItem extends SuperComponent {
const { offset, labelAlias, valueAlias, columnIndex } = this.data;
const { options } = this.properties;

// 调整偏移量
const index = range(Math.round(-offset / this.itemHeight), 0, this.getCount() - 1);

// 执行震动
if (index !== this.PrewIndex) {
if (wx.vibrateShort) wx.vibrateShort({ type: 'light' });
}

if (offset === this.StartOffset) {
return;
}
// 调整偏移量
const index = range(Math.round(-offset / this.itemHeight), 0, this.getCount() - 1);
this.setData({
curIndex: index,
offset: -index * this.itemHeight,
Expand Down