Merge "Add VariableFont perf test"

/*

 * Copyright (C) 2020 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 android.graphics.Paint;

import android.graphics.RecordingCanvas;

import android.graphics.RenderNode;

import android.perftests.utils.BenchmarkState;

import android.perftests.utils.PerfStatusReporter;

import androidx.test.filters.LargeTest;

import androidx.test.runner.AndroidJUnit4;

import org.junit.Before;

import org.junit.Rule;

import org.junit.Test;

import org.junit.runner.RunWith;

import java.util.Random;

@LargeTest

@RunWith(AndroidJUnit4.class)

public class VariableFontPerfTest {

    private static final int WORD_LENGTH = 9;  // Random word has 9 characters.

    private static final boolean NO_STYLE_TEXT = false;

    private static final TextPaint PAINT = new TextPaint();

    public VariableFontPerfTest() {}

    @Rule

    public PerfStatusReporter mPerfStatusReporter = new PerfStatusReporter();

    private final TextPerfUtils mTextUtil = new TextPerfUtils();

    @Before

    public void setUp() {

        mTextUtil.resetRandom(0 /* seed */);

    }

    @Test

    public void testDraw_SetVariationOnce() {

        final BenchmarkState state = mPerfStatusReporter.getBenchmarkState();

        final CharSequence text = mTextUtil.nextRandomParagraph(WORD_LENGTH, NO_STYLE_TEXT);

        final Paint paint = new Paint(PAINT);

        paint.setFontVariationSettings("'wght' 700");

        final RenderNode node = RenderNode.create("benchmark", null);

        while (state.keepRunning()) {

            state.pauseTiming();

            final RecordingCanvas c = node.beginRecording(1200, 200);

            state.resumeTiming();

            c.drawText(text, 0, text.length(), 0, 100, paint);

            state.pauseTiming();

            node.endRecording();

            state.resumeTiming();

        }

    }

    @Test

    public void testDraw_SetVariationEachDraw() {

        final BenchmarkState state = mPerfStatusReporter.getBenchmarkState();

        final CharSequence text = mTextUtil.nextRandomParagraph(WORD_LENGTH, NO_STYLE_TEXT);

        final Paint paint = new Paint(PAINT);

        final RenderNode node = RenderNode.create("benchmark", null);

        while (state.keepRunning()) {

            state.pauseTiming();

            final RecordingCanvas c = node.beginRecording(1200, 200);

            paint.setFontVariationSettings("'wght' 700");

            state.resumeTiming();

            c.drawText(text, 0, text.length(), 0, 100, paint);

            state.pauseTiming();

            node.endRecording();

            state.resumeTiming();

        }

    }

    @Test

    public void testDraw_SetDifferentVariationEachDraw() {

        final BenchmarkState state = mPerfStatusReporter.getBenchmarkState();

        final CharSequence text = mTextUtil.nextRandomParagraph(WORD_LENGTH, NO_STYLE_TEXT);

        final Paint paint = new Paint(PAINT);

        final RenderNode node = RenderNode.create("benchmark", null);

        final Random random = new Random(0);

        while (state.keepRunning()) {

            state.pauseTiming();

            final RecordingCanvas c = node.beginRecording(1200, 200);

            int weight = random.nextInt(1000);

            paint.setFontVariationSettings("'wght' " + weight);

            state.resumeTiming();

            c.drawText(text, 0, text.length(), 0, 100, paint);

            state.pauseTiming();

            node.endRecording();

            state.resumeTiming();

        }

    }

    @Test

    public void testSetFontVariationSettings() {

        final BenchmarkState state = mPerfStatusReporter.getBenchmarkState();

        final Paint paint = new Paint(PAINT);

        final Random random = new Random(0);

        while (state.keepRunning()) {

            state.pauseTiming();

            int weight = random.nextInt(1000);

            state.resumeTiming();

            paint.setFontVariationSettings("'wght' " + weight);

        }

    }

}