LongPressTextDragObserver.kt
/*
* Copyright 2021 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package androidx.compose.foundation.text
import androidx.compose.foundation.gestures.detectDragGestures
import androidx.compose.foundation.gestures.detectDragGesturesAfterLongPress
import androidx.compose.ui.geometry.Offset
import androidx.compose.ui.input.pointer.PointerInputScope
internal interface TextDragObserver {
fun onStart(startPoint: Offset)
fun onDrag(delta: Offset)
fun onStop()
fun onCancel()
}
internal suspend fun PointerInputScope.detectDragGesturesAfterLongPressWithObserver(
observer: TextDragObserver
) = detectDragGesturesAfterLongPress(
onDragEnd = { observer.onStop() },
onDrag = { _, offset ->
observer.onDrag(offset)
},
onDragStart = {
observer.onStart(it)
},
onDragCancel = { observer.onCancel() }
)
internal suspend fun PointerInputScope.detectDragGesturesWithObserver(
observer: TextDragObserver
) = detectDragGestures(
onDragEnd = { observer.onStop() },
onDrag = { _, offset ->
observer.onDrag(offset)
},
onDragStart = {
observer.onStart(it)
},
onDragCancel = { observer.onCancel() }
)