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/*
* Copyright (C) 2017 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 com.android.launcher3.uioverrides;
import static com.android.launcher3.LauncherAnimUtils.OVERVIEW_TRANSITION_MS;
import android.graphics.Rect;
import android.view.View;
import com.android.launcher3.Launcher;
import com.android.launcher3.LauncherState;
import com.android.launcher3.R;
import com.android.launcher3.Utilities;
import com.android.launcher3.Workspace;
import com.android.launcher3.userevent.nano.LauncherLogProto.ContainerType;
import com.android.quickstep.RecentsView;
/**
* Definition for overview state
*/
public class OverviewState extends LauncherState {
public static final float WORKSPACE_SCALE_ON_SCROLL = 0.9f;
private static final int STATE_FLAGS = FLAG_SHOW_SCRIM | FLAG_WORKSPACE_ICONS_CAN_BE_DRAGGED;
public OverviewState(int id) {
super(id, ContainerType.WORKSPACE, OVERVIEW_TRANSITION_MS, 1f, STATE_FLAGS);
}
@Override
public float[] getWorkspaceScaleAndTranslation(Launcher launcher) {
Rect pageRect = new Rect();
RecentsView.getPageRect(launcher, pageRect);
if (launcher.getWorkspace().getNormalChildWidth() <= 0 || pageRect.isEmpty()) {
return super.getWorkspaceScaleAndTranslation(launcher);
}
RecentsView rv = launcher.getOverviewPanel();
float overlap = 0;
if (rv.getCurrentPage() >= rv.getFirstTaskIndex()) {
Utilities.scaleRectAboutCenter(pageRect, WORKSPACE_SCALE_ON_SCROLL);
overlap = launcher.getResources().getDimension(R.dimen.workspace_overview_offset_x);
}
return getScaleAndTranslationForPageRect(launcher, overlap, pageRect);
}
@Override
public float getHoseatAlpha(Launcher launcher) {
return launcher.getDeviceProfile().isVerticalBarLayout() ? 0 : 1;
}
@Override
public void onStateEnabled(Launcher launcher) {
RecentsView rv = launcher.getOverviewPanel();
rv.setOverviewStateEnabled(true);
}
@Override
public void onStateDisabled(Launcher launcher) {
RecentsView rv = launcher.getOverviewPanel();
rv.setOverviewStateEnabled(false);
}
@Override
public View getFinalFocus(Launcher launcher) {
return launcher.getOverviewPanel();
}
public static float[] getScaleAndTranslationForPageRect(Launcher launcher, float offsetX,
Rect pageRect) {
Workspace ws = launcher.getWorkspace();
float childWidth = ws.getNormalChildWidth();
Rect insets = launcher.getDragLayer().getInsets();
float scale = pageRect.width() / childWidth;
float translationX = offsetX / scale;
if (Utilities.isRtl(launcher.getResources())) {
translationX = -translationX;
}
float halfHeight = ws.getHeight() / 2;
float childTop = halfHeight - scale * (halfHeight - ws.getPaddingTop() - insets.top);
float translationY = pageRect.top - childTop;
return new float[] {scale, translationX, translationY};
}
}
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