diff options
Diffstat (limited to 'core/src/main/kotlin/ca/allanwang/kau/swipe/SwipeBackLayout.kt')
| -rw-r--r-- | core/src/main/kotlin/ca/allanwang/kau/swipe/SwipeBackLayout.kt | 48 |
1 files changed, 33 insertions, 15 deletions
diff --git a/core/src/main/kotlin/ca/allanwang/kau/swipe/SwipeBackLayout.kt b/core/src/main/kotlin/ca/allanwang/kau/swipe/SwipeBackLayout.kt index 4d7142c..1f564ce 100644 --- a/core/src/main/kotlin/ca/allanwang/kau/swipe/SwipeBackLayout.kt +++ b/core/src/main/kotlin/ca/allanwang/kau/swipe/SwipeBackLayout.kt @@ -1,15 +1,30 @@ +/* + * Copyright 2018 Allan Wang + * + * 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 ca.allanwang.kau.swipe import android.annotation.SuppressLint import android.app.Activity import android.content.Context import android.graphics.Canvas -import androidx.core.view.ViewCompat import android.util.AttributeSet import android.view.MotionEvent import android.view.View import android.view.ViewGroup import android.widget.FrameLayout +import androidx.core.view.ViewCompat import ca.allanwang.kau.logging.KL import ca.allanwang.kau.utils.adjustAlpha import ca.allanwang.kau.utils.navigationBarColor @@ -23,7 +38,10 @@ import java.lang.ref.WeakReference * If an edge detection occurs, this layout consumes all the touch events * Use the [swipeEnabled] toggle if you need the scroll events on the same axis */ -internal class SwipeBackLayout @JvmOverloads constructor(context: Context, attrs: AttributeSet? = null, defStyle: Int = 0 +internal class SwipeBackLayout @JvmOverloads constructor( + context: Context, + attrs: AttributeSet? = null, + defStyle: Int = 0 ) : FrameLayout(context, attrs, defStyle), SwipeBackContract, SwipeBackContractInternal { override val swipeBackLayout: SwipeBackLayout @@ -96,11 +114,9 @@ internal class SwipeBackLayout @JvmOverloads constructor(context: Context, attrs override fun onEdgeTouch() {} override fun onScrollToClose(edgeFlag: Int) {} - } } - private var inLayout: Boolean = false override var edgeSize: Int @@ -158,7 +174,8 @@ internal class SwipeBackLayout @JvmOverloads constructor(context: Context, attrs } override fun setEdgeSizePercent(swipeEdgePercent: Float) { - edgeSize = ((if (horizontal) resources.displayMetrics.widthPixels else resources.displayMetrics.heightPixels) * swipeEdgePercent).toInt() + edgeSize = + ((if (horizontal) resources.displayMetrics.widthPixels else resources.displayMetrics.heightPixels) * swipeEdgePercent).toInt() } /** @@ -206,7 +223,7 @@ internal class SwipeBackLayout @JvmOverloads constructor(context: Context, attrs */ override fun scrollToFinishActivity() { val contentView = contentViewRef.get() - ?: return KL.e { "KauSwipe cannot scroll to finish as contentView is null. Is onPostCreate called?" } + ?: return KL.e { "KauSwipe cannot scroll to finish as contentView is null. Is onPostCreate called?" } val swipeWidth = contentView.width + OVERSCROLL_DISTANCE val swipeHeight = contentView.height + OVERSCROLL_DISTANCE var top = 0 @@ -243,7 +260,7 @@ internal class SwipeBackLayout @JvmOverloads constructor(context: Context, attrs override fun onLayout(changed: Boolean, left: Int, top: Int, right: Int, bottom: Int) { val contentView = contentViewRef.get() - ?: return KL.e { "KauSwipe cannot change layout as contentView is null. Is onPostCreate called?" } + ?: return KL.e { "KauSwipe cannot change layout as contentView is null. Is onPostCreate called?" } inLayout = true val xOffset: Int val yOffset: Int @@ -346,11 +363,12 @@ internal class SwipeBackLayout @JvmOverloads constructor(context: Context, attrs override fun onViewPositionChanged(changedView: View, left: Int, top: Int, dx: Int, dy: Int) { super.onViewPositionChanged(changedView, left, top, dx, dy) val contentView = contentViewRef.get() - ?: return KL.e { "KauSwipe cannot change view position as contentView is null; is onPostCreate called?" } + ?: return KL.e { "KauSwipe cannot change view position as contentView is null; is onPostCreate called?" } //make sure that we are using the proper axis scrollPercent = Math.abs( - if (horizontal) left.toFloat() / contentView.width - else (top.toFloat() / contentView.height)) + if (horizontal) left.toFloat() / contentView.width + else (top.toFloat() / contentView.height) + ) contentOffset = if (horizontal) left else top invalidate() if (scrollPercent < scrollThreshold && !isScrollOverValid) @@ -375,10 +393,11 @@ internal class SwipeBackLayout @JvmOverloads constructor(context: Context, attrs var result = Pair(0, 0) if (scrollPercent <= scrollThreshold) { //threshold not met; check velocities - if ((edgeFlag == SWIPE_EDGE_LEFT && xvel > MIN_FLING_VELOCITY) - || (edgeFlag == SWIPE_EDGE_RIGHT && xvel < -MIN_FLING_VELOCITY) - || (edgeFlag == SWIPE_EDGE_TOP && yvel > MIN_FLING_VELOCITY) - || (edgeFlag == SWIPE_EDGE_BOTTOM && yvel < -MIN_FLING_VELOCITY)) + if ((edgeFlag == SWIPE_EDGE_LEFT && xvel > MIN_FLING_VELOCITY) || + (edgeFlag == SWIPE_EDGE_RIGHT && xvel < -MIN_FLING_VELOCITY) || + (edgeFlag == SWIPE_EDGE_TOP && yvel > MIN_FLING_VELOCITY) || + (edgeFlag == SWIPE_EDGE_BOTTOM && yvel < -MIN_FLING_VELOCITY) + ) result = exitCaptureOffsets(edgeFlag, releasedChild) } else { //threshold met; fling to designated side @@ -431,6 +450,5 @@ internal class SwipeBackLayout @JvmOverloads constructor(context: Context, attrs const val DEFAULT_SCROLL_THRESHOLD = 0.3f const val OVERSCROLL_DISTANCE = 10 - } } |