| /* |
| * Copyright (C) 2018 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.server.wm.utils; |
| |
| import static android.view.Surface.ROTATION_0; |
| import static android.view.Surface.ROTATION_180; |
| import static android.view.Surface.ROTATION_270; |
| import static android.view.Surface.ROTATION_90; |
| |
| import static com.android.server.wm.utils.CoordinateTransforms.transformLogicalToPhysicalCoordinates; |
| import static com.android.server.wm.utils.CoordinateTransforms.transformPhysicalToLogicalCoordinates; |
| |
| |
| import static com.android.server.wm.utils.CoordinateTransforms.transformToRotation; |
| |
| import static org.hamcrest.Matchers.is; |
| import static org.junit.Assert.*; |
| |
| import android.graphics.Matrix; |
| import android.graphics.Point; |
| import android.graphics.PointF; |
| import android.view.DisplayInfo; |
| |
| import org.junit.Before; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.rules.ErrorCollector; |
| |
| public class CoordinateTransformsTest { |
| |
| private static final int W = 200; |
| private static final int H = 400; |
| |
| private final Matrix mMatrix = new Matrix(); |
| private final Matrix mMatrix2 = new Matrix(); |
| |
| @Rule |
| public final ErrorCollector mErrorCollector = new ErrorCollector(); |
| |
| @Before |
| public void setUp() throws Exception { |
| mMatrix.setTranslate(0xdeadbeef, 0xdeadbeef); |
| mMatrix2.setTranslate(0xbeefdead, 0xbeefdead); |
| } |
| |
| @Test |
| public void transformPhysicalToLogicalCoordinates_rot0() { |
| transformPhysicalToLogicalCoordinates(ROTATION_0, W, H, mMatrix); |
| assertThat(mMatrix, is(Matrix.IDENTITY_MATRIX)); |
| } |
| |
| @Test |
| public void transformPhysicalToLogicalCoordinates_rot90() { |
| transformPhysicalToLogicalCoordinates(ROTATION_90, W, H, mMatrix); |
| |
| checkPoint(0, 0).transformsTo(0, W); |
| checkPoint(W, H).transformsTo(H, 0); |
| } |
| |
| @Test |
| public void transformPhysicalToLogicalCoordinates_rot180() { |
| transformPhysicalToLogicalCoordinates(ROTATION_180, W, H, mMatrix); |
| |
| checkPoint(0, 0).transformsTo(W, H); |
| checkPoint(W, H).transformsTo(0, 0); |
| } |
| |
| @Test |
| public void transformPhysicalToLogicalCoordinates_rot270() { |
| transformPhysicalToLogicalCoordinates(ROTATION_270, W, H, mMatrix); |
| |
| checkPoint(0, 0).transformsTo(H, 0); |
| checkPoint(W, H).transformsTo(0, W); |
| } |
| |
| @Test |
| public void transformLogicalToPhysicalCoordinates_rot0() { |
| transformLogicalToPhysicalCoordinates(ROTATION_0, W, H, mMatrix); |
| assertThat(mMatrix, is(Matrix.IDENTITY_MATRIX)); |
| } |
| |
| @Test |
| public void transformLogicalToPhysicalCoordinates_rot90() { |
| transformLogicalToPhysicalCoordinates(ROTATION_90, W, H, mMatrix); |
| |
| checkPoint(0, W).transformsTo(0, 0); |
| checkPoint(H, 0).transformsTo(W, H); |
| } |
| |
| @Test |
| public void transformLogicalToPhysicalCoordinates_rot180() { |
| transformLogicalToPhysicalCoordinates(ROTATION_180, W, H, mMatrix); |
| |
| checkPoint(W, H).transformsTo(0, 0); |
| checkPoint(0, 0).transformsTo(W, H); |
| } |
| |
| @Test |
| public void transformLogicalToPhysicalCoordinates_rot270() { |
| transformLogicalToPhysicalCoordinates(ROTATION_270, W, H, mMatrix); |
| |
| checkPoint(H, 0).transformsTo(0, 0); |
| checkPoint(0, W).transformsTo(W, H); |
| } |
| |
| @Test |
| public void transformLogicalToPhysicalCoordinatesIsInverse_rot0() { |
| transformLogicalToPhysicalCoordinates(ROTATION_0, W, H, mMatrix); |
| transformPhysicalToLogicalCoordinates(ROTATION_0, W, H, mMatrix2); |
| |
| assertMatricesAreInverses(mMatrix, mMatrix2); |
| } |
| |
| @Test |
| public void transformLogicalToPhysicalCoordinatesIsInverse_rot90() { |
| transformLogicalToPhysicalCoordinates(ROTATION_90, W, H, mMatrix); |
| transformPhysicalToLogicalCoordinates(ROTATION_90, W, H, mMatrix2); |
| |
| assertMatricesAreInverses(mMatrix, mMatrix2); |
| } |
| |
| @Test |
| public void transformLogicalToPhysicalCoordinatesIsInverse_rot180() { |
| transformLogicalToPhysicalCoordinates(ROTATION_180, W, H, mMatrix); |
| transformPhysicalToLogicalCoordinates(ROTATION_180, W, H, mMatrix2); |
| |
| assertMatricesAreInverses(mMatrix, mMatrix2); |
| } |
| |
| @Test |
| public void transformLogicalToPhysicalCoordinatesIsInverse_rot270() { |
| transformLogicalToPhysicalCoordinates(ROTATION_270, W, H, mMatrix); |
| transformPhysicalToLogicalCoordinates(ROTATION_270, W, H, mMatrix2); |
| |
| assertMatricesAreInverses(mMatrix, mMatrix2); |
| } |
| |
| @Test |
| public void transformBetweenRotations_rot180_rot270() { |
| // W,H are flipped, because they need to be given in the new orientation, i.e. ROT_270. |
| transformToRotation(ROTATION_180, ROTATION_270, H, W, mMatrix); |
| |
| checkPoint(0, 0).transformsTo(0, W); |
| checkPoint(W, H).transformsTo(H, 0); |
| } |
| |
| @Test |
| public void transformBetweenRotations_rot90_rot0() { |
| transformToRotation(ROTATION_180, ROTATION_270, W, H, mMatrix); |
| |
| checkPoint(0, 0).transformsTo(0, H); |
| // H,W is bottom right in ROT_90 |
| checkPoint(H, W).transformsTo(W, 0); |
| } |
| |
| @Test |
| public void transformBetweenRotations_displayInfo() { |
| final DisplayInfo di = new DisplayInfo(); |
| di.rotation = ROTATION_90; |
| di.logicalWidth = H; // dimensions are flipped in ROT_90 |
| di.logicalHeight = W; |
| transformToRotation(ROTATION_180, ROTATION_270, di, mMatrix); |
| |
| // W,H are flipped, because they need to be given in the new orientation, i.e. ROT_270. |
| transformToRotation(ROTATION_180, ROTATION_270, H, W, mMatrix2); |
| |
| assertEquals(mMatrix2, mMatrix); |
| } |
| |
| private void assertMatricesAreInverses(Matrix matrix, Matrix matrix2) { |
| final Matrix concat = new Matrix(); |
| concat.setConcat(matrix, matrix2); |
| assertTrue("expected identity, but was: " + concat, concat.isIdentity()); |
| } |
| |
| private TransformPointAssertable checkPoint(int x, int y) { |
| final Point devicePoint = new Point(x, y); |
| final float[] fs = new float[] {x, y}; |
| mMatrix.mapPoints(fs); |
| final PointF transformedPoint = new PointF(fs[0], fs[1]); |
| |
| return (expectedX, expectedY) -> { |
| mErrorCollector.checkThat("t(" + devicePoint + ")", |
| transformedPoint, is(new PointF(expectedX, expectedY))); |
| }; |
| } |
| |
| public interface TransformPointAssertable { |
| void transformsTo(int x, int y); |
| } |
| } |