mirror of
https://github.com/LawnchairLauncher/lawnchair.git
synced 2026-02-28 15:56:49 +00:00
3b86202a95
The problem is that the velocity threshold to activate the fling was set using pixels per second, so a better aproach would is to use dp/s. So now there is a variable set in the dimes.xml file called base_swift_detector_fling_release_velocity. Test: Manually tested Fix: 201252634 Change-Id: Ief14f25de136dead74f03cb24d2120b67900239e
93 lines
3.3 KiB
Java
93 lines
3.3 KiB
Java
/*
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* Copyright (C) 2019 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.launcher3.touch;
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import android.content.Context;
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import android.graphics.PointF;
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import android.view.MotionEvent;
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import android.view.ViewConfiguration;
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import androidx.annotation.NonNull;
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import com.android.launcher3.Utilities;
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/**
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* Two dimensional scroll/drag/swipe gesture detector that reports x and y displacement/velocity.
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*/
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public class BothAxesSwipeDetector extends BaseSwipeDetector {
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public static final int DIRECTION_UP = 1 << 0;
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// Note that this will track left instead of right in RTL.
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public static final int DIRECTION_RIGHT = 1 << 1;
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public static final int DIRECTION_DOWN = 1 << 2;
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// Note that this will track right instead of left in RTL.
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public static final int DIRECTION_LEFT = 1 << 3;
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/* Client of this gesture detector can register a callback. */
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private final Listener mListener;
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private int mScrollDirections;
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public BothAxesSwipeDetector(@NonNull Context context, @NonNull Listener l) {
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super(context, ViewConfiguration.get(context), Utilities.isRtl(context.getResources()));
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mListener = l;
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}
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public void setDetectableScrollConditions(int scrollDirectionFlags, boolean ignoreSlop) {
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mScrollDirections = scrollDirectionFlags;
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mIgnoreSlopWhenSettling = ignoreSlop;
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}
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@Override
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protected boolean shouldScrollStart(PointF displacement) {
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// Check if the client is interested in scroll in current direction.
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boolean canScrollUp = (mScrollDirections & DIRECTION_UP) > 0
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&& displacement.y <= -mTouchSlop;
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boolean canScrollRight = (mScrollDirections & DIRECTION_RIGHT) > 0
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&& displacement.x >= mTouchSlop;
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boolean canScrollDown = (mScrollDirections & DIRECTION_DOWN) > 0
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&& displacement.y >= mTouchSlop;
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boolean canScrollLeft = (mScrollDirections & DIRECTION_LEFT) > 0
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&& displacement.x <= -mTouchSlop;
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return canScrollUp || canScrollRight || canScrollDown || canScrollLeft;
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}
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@Override
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protected void reportDragStartInternal(boolean recatch) {
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mListener.onDragStart(!recatch);
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}
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@Override
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protected void reportDraggingInternal(PointF displacement, MotionEvent event) {
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mListener.onDrag(displacement, event);
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}
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@Override
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protected void reportDragEndInternal(PointF velocity) {
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mListener.onDragEnd(velocity);
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}
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/** Listener to receive updates on the swipe. */
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public interface Listener {
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/** @param start whether this was the original drag start, as opposed to a recatch. */
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void onDragStart(boolean start);
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boolean onDrag(PointF displacement, MotionEvent motionEvent);
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void onDragEnd(PointF velocity);
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}
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}
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