1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 package android.uirendering.cts.testclasses; 17 18 import static org.junit.Assert.assertEquals; 19 import static org.junit.Assert.assertFalse; 20 import static org.junit.Assert.assertNotNull; 21 import static org.junit.Assert.assertNotSame; 22 import static org.junit.Assert.assertNull; 23 import static org.junit.Assert.assertSame; 24 import static org.junit.Assert.assertTrue; 25 import static org.junit.Assert.fail; 26 27 import android.content.res.Resources.Theme; 28 import android.graphics.BitmapFactory; 29 import android.graphics.Rect; 30 31 import org.junit.Before; 32 import org.junit.Test; 33 import org.junit.runner.RunWith; 34 import android.content.Context; 35 import android.content.res.Configuration; 36 import android.content.res.Resources; 37 import android.content.res.XmlResourceParser; 38 import android.graphics.Bitmap; 39 import android.graphics.Canvas; 40 import android.graphics.Color; 41 import android.graphics.drawable.BitmapDrawable; 42 import android.graphics.drawable.Drawable; 43 import android.graphics.drawable.Drawable.ConstantState; 44 import android.support.test.InstrumentationRegistry; 45 import android.support.test.filters.MediumTest; 46 import android.support.test.runner.AndroidJUnit4; 47 import android.uirendering.cts.R; 48 import android.uirendering.cts.bitmapverifiers.RectVerifier; 49 import android.uirendering.cts.testinfrastructure.ActivityTestBase; 50 import android.uirendering.cts.testinfrastructure.CanvasClient; 51 import android.util.LayoutDirection; 52 53 import java.io.ByteArrayInputStream; 54 import java.io.File; 55 import java.io.FileOutputStream; 56 import java.io.IOException; 57 import java.io.InputStream; 58 59 @MediumTest 60 @RunWith(AndroidJUnit4.class) 61 public class BitmapDrawableTest extends ActivityTestBase { 62 63 // The target context. 64 private Context mContext; 65 66 @Before 67 public void setup() { 68 mContext = InstrumentationRegistry.getTargetContext(); 69 } 70 71 private static final int[] DENSITY_VALUES = new int[] { 72 160, 80, 320 73 }; 74 75 private static final int[] DENSITY_IMAGES = new int[] { 76 R.drawable.bitmap_density, 77 R.drawable.bitmap_shader_density, 78 R.drawable.bitmap_shader_am_density, 79 }; 80 81 @Test 82 public void testPreloadDensity() throws IOException { 83 final Resources res = mContext.getResources(); 84 final int densityDpi = res.getConfiguration().densityDpi; 85 try { 86 for (int i = 0; i < DENSITY_IMAGES.length; i++) { 87 verifyPreloadDensityInner(res, DENSITY_IMAGES[i], DENSITY_VALUES); 88 } 89 } finally { 90 setResourcesDensity(res, densityDpi); 91 } 92 } 93 94 private void verifyPreloadDensityInner(Resources res, int sourceResId, int[] densities) 95 throws IOException { 96 final Rect tempPadding = new Rect(); 97 98 // Capture initial state at preload density. 99 final int preloadDensityDpi = densities[0]; 100 setResourcesDensity(res, preloadDensityDpi); 101 102 final BitmapDrawable preloadedDrawable = (BitmapDrawable) res.getDrawable(sourceResId); 103 final ConstantState preloadedConstantState = preloadedDrawable.getConstantState(); 104 final int origWidth = preloadedDrawable.getIntrinsicWidth(); 105 final int origHeight = preloadedDrawable.getIntrinsicHeight(); 106 assertFalse(preloadedDrawable.getPadding(tempPadding)); 107 108 runTest(preloadedDrawable); 109 110 for (int i = 1; i < densities.length; i++) { 111 final int scaledDensityDpi = densities[i]; 112 final float scale = scaledDensityDpi / (float) preloadDensityDpi; 113 setResourcesDensity(res, scaledDensityDpi); 114 115 final BitmapDrawable scaledDrawable = 116 (BitmapDrawable) preloadedConstantState.newDrawable(res); 117 scaledDrawable.setLayoutDirection(LayoutDirection.RTL); 118 119 // Sizes are rounded. 120 assertEquals(Math.round(origWidth * scale), scaledDrawable.getIntrinsicWidth()); 121 assertEquals(Math.round(origHeight * scale), scaledDrawable.getIntrinsicHeight()); 122 123 // Bitmaps have no padding. 124 assertFalse(scaledDrawable.getPadding(tempPadding)); 125 126 runTest(scaledDrawable); 127 128 // Ensure theme density is applied correctly. Unlike most 129 // drawables, we don't have any loss of accuracy because density 130 // changes are re-computed from the source every time. 131 setResourcesDensity(res, preloadDensityDpi); 132 133 final Theme t = res.newTheme(); 134 scaledDrawable.applyTheme(t); 135 assertEquals(origWidth, scaledDrawable.getIntrinsicWidth()); 136 assertEquals(origHeight, scaledDrawable.getIntrinsicHeight()); 137 assertFalse(scaledDrawable.getPadding(tempPadding)); 138 } 139 } 140 141 private void runTest(Drawable dr) { 142 final Rect drBounds = new Rect(0, 0, dr.getIntrinsicWidth(), dr.getIntrinsicHeight()); 143 CanvasClient canvasClient = (canvas, width, height) -> { 144 assertTrue(width > drBounds.width()); 145 assertTrue(height > drBounds.height()); 146 dr.setBounds(drBounds); 147 dr.draw(canvas); 148 }; 149 createTest() 150 .addCanvasClient(canvasClient) 151 .runWithVerifier(new RectVerifier(Color.WHITE, Color.BLUE, drBounds)); 152 } 153 154 private static void setResourcesDensity(Resources res, int densityDpi) { 155 final Configuration config = new Configuration(); 156 config.setTo(res.getConfiguration()); 157 config.densityDpi = densityDpi; 158 res.updateConfiguration(config, null); 159 } 160 } 161
