lawnchair/quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java

/*
 * Copyright (C) 2021 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.taskbar;

import android.content.ContextWrapper;
import android.graphics.Rect;
import android.view.LayoutInflater;

import com.android.launcher3.BaseQuickstepLauncher;
import com.android.launcher3.DeviceProfile;
import com.android.launcher3.R;
import com.android.launcher3.views.ActivityContext;
import com.android.launcher3.views.BaseDragLayer;

/**
 * The {@link ActivityContext} with which we inflate Taskbar-related Views. This allows UI elements
 * that are used by both Launcher and Taskbar (such as Folder) to reference a generic
 * ActivityContext and BaseDragLayer instead of the Launcher activity and its DragLayer.
 */
public class TaskbarActivityContext extends ContextWrapper implements ActivityContext {

    private final DeviceProfile mDeviceProfile;
    private final LayoutInflater mLayoutInflater;
    private final TaskbarContainerView mTaskbarContainerView;
    private final float mIconScale;

    public TaskbarActivityContext(BaseQuickstepLauncher launcher) {
        super(launcher);
        mDeviceProfile = launcher.getDeviceProfile().copy(this);
        float taskbarIconSize = getResources().getDimension(R.dimen.taskbar_icon_size);
        mIconScale = taskbarIconSize / mDeviceProfile.iconSizePx;
        mDeviceProfile.updateIconSize(mIconScale, getResources());

        mLayoutInflater = LayoutInflater.from(this).cloneInContext(this);

        mTaskbarContainerView = (TaskbarContainerView) mLayoutInflater
                .inflate(R.layout.taskbar, null, false);
    }

    public TaskbarContainerView getTaskbarContainerView() {
        return mTaskbarContainerView;
    }

    /**
     * @return A LayoutInflater to use in this Context. Views inflated with this LayoutInflater will
     * be able to access this TaskbarActivityContext via ActivityContext.lookupContext().
     */
    public LayoutInflater getLayoutInflater() {
        return mLayoutInflater;
    }

    @Override
    public BaseDragLayer<TaskbarActivityContext> getDragLayer() {
        return mTaskbarContainerView;
    }

    @Override
    public DeviceProfile getDeviceProfile() {
        return mDeviceProfile;
    }

    @Override
    public Rect getFolderBoundingBox() {
        return mTaskbarContainerView.getFolderBoundingBox();
    }

    /**
     * @return The ratio of taskbar icon size vs normal workspace/hotseat icon size.
     */
    public float getTaskbarIconScale() {
        return mIconScale;
    }
}