| /* |
| * 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 android.text; |
| |
| import static android.text.TextDirectionHeuristics.LTR; |
| |
| import android.perftests.utils.BenchmarkState; |
| import android.perftests.utils.PerfStatusReporter; |
| |
| import android.support.test.filters.LargeTest; |
| import android.support.test.runner.AndroidJUnit4; |
| |
| import android.content.res.ColorStateList; |
| import android.graphics.Canvas; |
| import android.graphics.Typeface; |
| import android.text.Layout; |
| import android.text.style.TextAppearanceSpan; |
| import android.view.DisplayListCanvas; |
| import android.view.RenderNode; |
| |
| import org.junit.Before; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| |
| import java.nio.CharBuffer; |
| import java.util.Random; |
| |
| public class TextPerfUtils { |
| |
| private static final int PARA_LENGTH = 500; // Number of characters in a paragraph. |
| |
| private Random mRandom = new Random(0); |
| |
| private static final String ALPHABET = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"; |
| private static final int ALPHABET_LENGTH = ALPHABET.length(); |
| |
| private static final ColorStateList TEXT_COLOR = ColorStateList.valueOf(0x00000000); |
| private static final String[] FAMILIES = { "sans-serif", "serif", "monospace" }; |
| private static final int[] STYLES = { |
| Typeface.NORMAL, Typeface.BOLD, Typeface.ITALIC, Typeface.BOLD_ITALIC |
| }; |
| |
| private final char[] mBuffer = new char[PARA_LENGTH]; |
| |
| public void resetRandom(long seed) { |
| mRandom = new Random(seed); |
| } |
| |
| public CharSequence nextRandomParagraph(int wordLen, boolean applyRandomStyle) { |
| for (int i = 0; i < PARA_LENGTH; i++) { |
| if (i % (wordLen + 1) == wordLen) { |
| mBuffer[i] = ' '; |
| } else { |
| mBuffer[i] = ALPHABET.charAt(mRandom.nextInt(ALPHABET_LENGTH)); |
| } |
| } |
| |
| CharSequence cs = CharBuffer.wrap(mBuffer); |
| if (!applyRandomStyle) { |
| return cs; |
| } |
| |
| SpannableStringBuilder ssb = new SpannableStringBuilder(cs); |
| for (int i = 0; i < ssb.length(); i += wordLen) { |
| final int spanStart = i; |
| final int spanEnd = (i + wordLen) > ssb.length() ? ssb.length() : i + wordLen; |
| |
| final TextAppearanceSpan span = new TextAppearanceSpan( |
| FAMILIES[mRandom.nextInt(FAMILIES.length)], |
| STYLES[mRandom.nextInt(STYLES.length)], |
| 24 + mRandom.nextInt(32), // text size. min 24 max 56 |
| TEXT_COLOR, TEXT_COLOR); |
| |
| ssb.setSpan(span, spanStart, spanEnd, Spanned.SPAN_INCLUSIVE_EXCLUSIVE); |
| } |
| return ssb; |
| } |
| } |