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perf(ui): 优化多选与长按拖拽灵敏度，实现极速响应跨行连续多选

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This commit is contained in:
xfy 2026-07-23 14:39:27 +08:00
parent 1700615508
commit c6377d85f9
1 changed files with 21 additions and 29 deletions
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50
core/src/main/kotlin/plus/rua/project/ui/DateRecorderScreen.kt
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@ -377,33 +377,12 @@ private fun RecordGrid(
val down = awaitFirstDown(pass = PointerEventPass.Initial, requireUnconsumed = false)
val startOffset = down.position
val startIndex = findItemIndexAtOffset(gridState, startOffset) ?: return@awaitEachGesture
val startTime = down.uptimeMillis
var isDragSelecting = false
var isScrolling = false
val initialSelected = if (selectionMode) selectedIds else emptySet()
if (!selectionMode) {
// 普通模式下：等待 300ms 长按判定
val longPressResult = withTimeoutOrNull(300L) {
while (true) {
val event = awaitPointerEvent(pass = PointerEventPass.Initial)
val change = event.changes.firstOrNull { it.id == down.id } ?: break
if (!change.pressed) return@withTimeoutOrNull false
if ((change.position - startOffset).getDistance() > 20f) {
// 移动距离大于 20px 判定为滚屏而非长按
return@withTimeoutOrNull false
}
}
true
}
if (longPressResult == null) {
// 300ms 超时到达且未松手/未远移，触发长按多选
isDragSelecting = true
val startId = records[startIndex].id
onSetSelectedIds(setOf(startId))
}
}
// 持续监听 Pointer 移动手势
while (true) {
val event = awaitPointerEvent(pass = PointerEventPass.Initial)
val pointerChange = event.changes.firstOrNull { it.id == down.id } ?: break
@ -411,12 +390,25 @@ private fun RecordGrid(
val currentOffset = pointerChange.position
val distance = (currentOffset - startOffset).getDistance()
val elapsedTime = pointerChange.uptimeMillis - startTime
if (!isDragSelecting) {
if (selectionMode && distance > 10f) {
isDragSelecting = true
val startId = records[startIndex].id
onSetSelectedIds(initialSelected + startId)
if (!isDragSelecting && !isScrolling) {
if (selectionMode) {
// 多选模式下：滑动超过 6px 立刻触发极速滑动多选
if (distance >= 6f) {
isDragSelecting = true
val startId = records[startIndex].id
onSetSelectedIds(initialSelected + startId)
}
} else {
// 普通模式下：按住满 250ms 或按住移动超过 10px（且未快滑滚屏）触发长按多选
if (distance > 30f && elapsedTime < 200L) {
isScrolling = true // 快速划过判定为普通滚屏
} else if (elapsedTime >= 250L || (elapsedTime >= 150L && distance >= 10f)) {
isDragSelecting = true
val startId = records[startIndex].id
onSetSelectedIds(setOf(startId))
}
}
}
@ -433,7 +425,7 @@ private fun RecordGrid(
// 边界滑动自动滚屏
val viewportHeight = gridState.layoutInfo.viewportSize.height
if (currentOffset.y < 120f) {
coroutineScope.launch { gridState.scrollBy(-25f) }
coroutineScope.launch { gridState.scrollBy(-30f) }
} else if (currentOffset.y > viewportHeight - 120f) {
coroutineScope.launch { gridState.scrollBy(25f) }
}