Vinit Nayak
a406f727ad
WM is making changes which allows apps to maintain their orientation independent of the orientation of the foreground app. This allows recents to always start in portrait even when the app currently running is in landscape. This means we have to give the illusion of a landscape oriented overview when user swipes up in gesterual nav when launcher is started in portrait configuration. PagedOrientationHandler abstracts all coordinate specific logic from Paged/RecentsView primarily, but also all other dynamic calculations throughout launcher. PagedViewOrientationState is the single point of exposure to other classes that depend on those changes. The goal is to also minimize holding state to allow for default implementations of PagedOrientationHandler for all the 3p/Fallback classes. PagedViewOrientationState also holds other data around rotation that isn't specifically tied to view logic. The fake landscape overview can be toggled with: adb shell settings put global forced_rotation [0/1] Fixes: 146176182 Change-Id: I65d8d4e9f92b93931cbe0053ccaf0cda8d2ffd6c
90 lines
2.8 KiB
Java
90 lines
2.8 KiB
Java
/*
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* Copyright (C) 2018 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.allapps;
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import android.content.Context;
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import android.util.AttributeSet;
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import android.view.MotionEvent;
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import com.android.launcher3.PagedView;
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public class AllAppsPagedView extends PagedView<PersonalWorkSlidingTabStrip> {
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final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6;
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final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3;
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final static float TOUCH_SLOP_DAMPING_FACTOR = 4;
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public AllAppsPagedView(Context context) {
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this(context, null);
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}
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public AllAppsPagedView(Context context, AttributeSet attrs) {
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this(context, attrs, 0);
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}
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public AllAppsPagedView(Context context, AttributeSet attrs, int defStyle) {
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super(context, attrs, defStyle);
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}
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@Override
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protected String getCurrentPageDescription() {
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// Not necessary, tab-bar already has two tabs with their own descriptions.
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return "";
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}
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@Override
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protected void onScrollChanged(int l, int t, int oldl, int oldt) {
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super.onScrollChanged(l, t, oldl, oldt);
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mPageIndicator.setScroll(l, mMaxScroll);
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}
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@Override
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protected void determineScrollingStart(MotionEvent ev) {
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float absDeltaX = Math.abs(ev.getX() - getDownMotionX());
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float absDeltaY = Math.abs(ev.getY() - getDownMotionY());
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if (Float.compare(absDeltaX, 0f) == 0) return;
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float slope = absDeltaY / absDeltaX;
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float theta = (float) Math.atan(slope);
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if (absDeltaX > mTouchSlop || absDeltaY > mTouchSlop) {
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cancelCurrentPageLongPress();
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}
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if (theta > MAX_SWIPE_ANGLE) {
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return;
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} else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) {
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theta -= START_DAMPING_TOUCH_SLOP_ANGLE;
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float extraRatio = (float)
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Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE)));
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super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio);
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} else {
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super.determineScrollingStart(ev);
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}
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}
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@Override
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public boolean hasOverlappingRendering() {
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return false;
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}
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@Override
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protected boolean isVerticalScrollable() {
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return false;
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}
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}
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