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/*
* Copyright (C) 2017 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.Canvas;
import android.graphics.Paint;
import android.perftests.utils.BenchmarkState;
import android.perftests.utils.PerfStatusReporter;
import android.support.test.filters.LargeTest;
import android.view.DisplayListCanvas;
import android.view.RenderNode;
import org.junit.Rule;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Random;
/**
* Performance test for single line measure and draw using {@link Paint} and {@link Canvas}.
*/
@LargeTest
@RunWith(Parameterized.class)
public class PaintMeasureDrawPerfTest {
private static final boolean[] BOOLEANS = new boolean[]{false, true};
@Parameterized.Parameters(name = "cached={1},{0}chars")
public static Collection cases() {
final List<Object[]> params = new ArrayList<>();
for (int length : new int[]{128}) {
for (boolean cached : BOOLEANS) {
params.add(new Object[]{length, cached});
}
}
return params;
}
@Rule
public PerfStatusReporter mPerfStatusReporter = new PerfStatusReporter();
private final int mLength;
private final boolean mCached;
private final TextPaint mTextPaint;
public PaintMeasureDrawPerfTest(int length, boolean cached) {
mLength = length;
mCached = cached;
mTextPaint = new TextPaint();
mTextPaint.setTextSize(10);
}
/**
* Measure the time for {@link Paint#measureText(String)}
*/
@Test
public void timeMeasure() throws Exception {
final BenchmarkState state = mPerfStatusReporter.getBenchmarkState();
state.pauseTiming();
Canvas.freeTextLayoutCaches();
final String text = createRandomText();
if (mCached) mTextPaint.measureText(text);
state.resumeTiming();
while (state.keepRunning()) {
state.pauseTiming();
if (!mCached) Canvas.freeTextLayoutCaches();
state.resumeTiming();
mTextPaint.measureText(text);
}
}
/**
* Measures the time for {@link Canvas#drawText(String, float, float, Paint)}
*/
@Test
public void timeDraw() throws Throwable {
final BenchmarkState state = mPerfStatusReporter.getBenchmarkState();
state.pauseTiming();
Canvas.freeTextLayoutCaches();
final RenderNode node = RenderNode.create("benchmark", null);
final String text = createRandomText();
if (mCached) mTextPaint.measureText(text);
state.resumeTiming();
while (state.keepRunning()) {
state.pauseTiming();
final DisplayListCanvas canvas = node.start(1200, 200);
final int save = canvas.save();
if (!mCached) Canvas.freeTextLayoutCaches();
state.resumeTiming();
canvas.drawText(text, 0 /*x*/, 100 /*y*/, mTextPaint);
state.pauseTiming();
canvas.restoreToCount(save);
node.end(canvas);
state.resumeTiming();
}
}
private String createRandomText() {
return (String) new NonEditableTextGenerator(new Random(0))
.setSequenceLength(mLength)
.setCreateBoring(true)
.setTextType(NonEditableTextGenerator.TextType.STRING)
.build();
}
}
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