| /* |
| * Copyright (C) 2009 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 android.gesture.cts; |
| |
| import android.gesture.GesturePoint; |
| import android.gesture.GestureStroke; |
| import android.graphics.Path; |
| import android.graphics.RectF; |
| |
| import java.util.ArrayList; |
| |
| import junit.framework.Assert; |
| |
| /** |
| * Helper class that generates a simple line GestureStroke, and provides common methods |
| * to validate values calculated from it. |
| */ |
| class LineGestureStrokeHelper { |
| |
| // point constants for 45 degree line gesture |
| // points have identical x and y coordinates |
| final static float LINE_START_POINT = 0; |
| final static int START_TIMESTAMP = 0; |
| final static float LINE_END_POINT = 20; |
| final static float LINE_MIDWAY_POINT = LINE_END_POINT/2; |
| final static float LINE_QUARTER_POINT = LINE_MIDWAY_POINT/2; |
| final static int END_TIMESTAMP = 1; |
| final static float LINE_ANGLE = 45; |
| |
| /** |
| * Creates a standard straight line gesture starting from the {@link LINE_START_POINT} and |
| * {@link LINE_END_POINT} |
| */ |
| GestureStroke createLineGesture() { |
| return createGestureStroke( |
| new GesturePoint(LINE_START_POINT, LINE_START_POINT, START_TIMESTAMP), |
| new GesturePoint(LINE_END_POINT, LINE_END_POINT, END_TIMESTAMP)); |
| } |
| |
| /** |
| * Helper method to assert expected values for a path derived from createLineGesture |
| * |
| * @throws {@link junit.framework.AssertionFailedError} if linePath attributes differs from |
| * expected values |
| */ |
| void assertLineBoundingBox(Path linePath) { |
| Assert.assertFalse(linePath.isEmpty()); |
| RectF bounds = new RectF(); |
| linePath.computeBounds(bounds, true); |
| // TODO: is it a compatability requirement that these numbers be consistent? |
| // expect a square bounding box, starting at LINE_START_POINT and bounded by |
| // LINE_MIDWAY_POINT |
| Assert.assertEquals(LINE_MIDWAY_POINT, bounds.bottom); |
| Assert.assertEquals(LINE_START_POINT, bounds.left); |
| Assert.assertEquals(LINE_MIDWAY_POINT, bounds.right); |
| Assert.assertEquals(LINE_START_POINT, bounds.top); |
| } |
| |
| /** |
| * Helper method to assert expected values for a bounds derived from createLineGesture |
| * |
| * @throws AssertionFailedError if linePath attributes differs from expected values |
| */ |
| void assertLineBoundingBox(RectF bounds) { |
| // expect a square bounding box, starting at LINE_START_POINT and bounded by |
| // LINE_END_POINT |
| Assert.assertEquals(LINE_END_POINT, bounds.bottom); |
| Assert.assertEquals(LINE_START_POINT, bounds.left); |
| Assert.assertEquals(LINE_END_POINT, bounds.right); |
| Assert.assertEquals(LINE_START_POINT, bounds.top); |
| } |
| |
| /** |
| * Helper method for creating a gesture stroke |
| */ |
| GestureStroke createGestureStroke(GesturePoint... points) { |
| ArrayList<GesturePoint> list = new ArrayList<GesturePoint>(points.length); |
| for (GesturePoint point : points) { |
| list.add(point); |
| } |
| return new GestureStroke(list); |
| } |
| } |