Merge "Split OverviewState for IconRecents Go" into ub-launcher3-master

/*

 * Copyright (C) 2019 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 static com.android.launcher3.anim.Interpolators.DEACCEL_2;

import android.graphics.Rect;

import com.android.launcher3.DeviceProfile;

import com.android.launcher3.Launcher;

import com.android.launcher3.LauncherState;

import com.android.launcher3.R;

import com.android.launcher3.userevent.nano.LauncherLogProto;

import com.android.quickstep.RecentsModel;

/**

 * Definition for overview state

 */

public class OverviewState extends LauncherState {

    // TODO: Remove this when we refactor BackgroundAppState

    protected static final Rect sTempRect = new Rect();

    private static final int STATE_FLAGS = FLAG_WORKSPACE_ICONS_CAN_BE_DRAGGED

            | FLAG_DISABLE_RESTORE | FLAG_OVERVIEW_UI | FLAG_DISABLE_ACCESSIBILITY;

    public OverviewState(int id) {

        this(id, OVERVIEW_TRANSITION_MS, STATE_FLAGS);

    }

    protected OverviewState(int id, int transitionDuration, int stateFlags) {

        super(id, LauncherLogProto.ContainerType.TASKSWITCHER, transitionDuration, stateFlags);

    }

    @Override

    public float[] getOverviewScaleAndTranslationYFactor(Launcher launcher) {

        return new float[] {1f, 0f};

    }

    @Override

    public void onStateDisabled(Launcher launcher) {

        RecentsModel.INSTANCE.get(launcher).resetAssistCache();

    }

    @Override

    public PageAlphaProvider getWorkspacePageAlphaProvider(Launcher launcher) {

        return new PageAlphaProvider(DEACCEL_2) {

            @Override

            public float getPageAlpha(int pageIndex) {

                return 0;

            }

        };

    }

    @Override

    public int getVisibleElements(Launcher launcher) {

        return NONE;

    }

    @Override

    public float getWorkspaceScrimAlpha(Launcher launcher) {

        return 0.5f;

    }

    @Override

    public String getDescription(Launcher launcher) {

        return launcher.getString(R.string.accessibility_desc_recent_apps);

    }

    @Override

    public void onBackPressed(Launcher launcher) {

        // TODO: Add logic to go back to task if coming from a currently running task.

        super.onBackPressed(launcher);

    }

    public static float getDefaultSwipeHeight(Launcher launcher) {

        DeviceProfile dp = launcher.getDeviceProfile();

        return dp.allAppsCellHeightPx - dp.allAppsIconTextSizePx;

    }

}