src/com/android/launcher3/graphics/RotationMode.java

/*
 * 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.graphics;

import android.graphics.Rect;

public abstract class RotationMode {

    public final float surfaceRotation;
    public final boolean isTransposed;

    private RotationMode(float surfaceRotation) {
        this.surfaceRotation = surfaceRotation;
        isTransposed = surfaceRotation != 0;
    }

    public final void mapRect(Rect rect, Rect out) {
        mapRect(rect.left, rect.top, rect.right, rect.bottom, out);
    }

    public void mapRect(int left, int top, int right, int bottom, Rect out) {
        out.set(left, top, right, bottom);
    }

    public static RotationMode NORMAL = new RotationMode(0) { };

    public static RotationMode LANDSCAPE = new RotationMode(-90) {
        @Override
        public void mapRect(int left, int top, int right, int bottom, Rect out) {
            out.left = top;
            out.top = right;
            out.right = bottom;
            out.bottom = left;
        }
    };

    public static RotationMode SEASCAPE = new RotationMode(90) {
        @Override
        public void mapRect(int left, int top, int right, int bottom, Rect out) {
            out.left = bottom;
            out.top = left;
            out.right = top;
            out.bottom = right;
        }
    };
}