Merge "TouchLatency: make updates time based and add fps to ball mode" (a9ffd16b) · Commits · e / os / android_frameworks_base

tests/TouchLatency/.gitignore

+1 −0

Original line number	Diff line number	Diff line
		@@ -3,4 +3,5 @@
		/.idea
		.DS_Store
		/build
		/gen
		.iml

tests/TouchLatency/app/build.gradle

+3 −3

Original line number	Diff line number	Diff line
		apply plugin: 'com.android.application'

		android {
		compileSdkVersion 21
		buildToolsVersion "21.1.2"
		compileSdkVersion 28
		buildToolsVersion '28.0.3'

		defaultConfig {
		applicationId "com.prefabulated.touchlatency"
		minSdkVersion 21
		targetSdkVersion 21
		targetSdkVersion 28
		versionCode 1
		versionName "1.0"
		}

tests/TouchLatency/app/src/main/java/com/prefabulated/touchlatency/TouchLatencyActivity.java

+66 −35

Original line number	Diff line number	Diff line
		@@ -19,11 +19,9 @@ package com.prefabulated.touchlatency;
		import android.app.Activity;
		import android.content.Context;
		import android.graphics.Canvas;
		import android.graphics.Color;
		import android.graphics.Paint;
		import android.os.CountDownTimer;
		import android.graphics.Paint.Align;
		import android.os.Bundle;
		import android.text.method.Touch;
		import android.util.AttributeSet;
		import android.util.Log;
		import android.view.Menu;
		@@ -31,15 +29,17 @@ import android.view.MenuItem;
		import android.view.MotionEvent;
		import android.view.View;
		import android.os.Trace;

		import java.util.ArrayList;
		import java.util.Collections;
		import java.math.RoundingMode;
		import java.text.DecimalFormat;

		class TouchLatencyView extends View implements View.OnTouchListener {
		private static final String LOG_TAG = "TouchLatency";
		private static final int BACKGROUND_COLOR = 0xFF400080;
		private static final int INNER_RADIUS = 70;
		private static final int BALL_RADIUS = 100;
		private static final int BALL_DIAMETER = 200;
		private static final int SEC_TO_NANOS = 1000000000;
		private static final float FPS_UPDATE_THRESHOLD = 20;
		private static final long BALL_VELOCITY = 420;

		public TouchLatencyView(Context context, AttributeSet attrs) {
		super(context, attrs);
		@@ -58,13 +58,17 @@ class TouchLatencyView extends View implements View.OnTouchListener {
		mRedPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
		mRedPaint.setColor(0xFFFF0000);
		mRedPaint.setStyle(Paint.Style.FILL);
		mTextPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
		mTextPaint.setColor(0xFFFFFFFF);
		mTextPaint.setTextSize(100);
		mTextPaint.setTextAlign(Align.RIGHT);

		mTouching = false;

		mBallX = 100.0f;
		mBallY = 100.0f;
		mVelocityX = 7.0f;
		mVelocityY = 7.0f;
		mLastDrawNano = 0;
		mFps = 0;
		mLastFpsUpdate = 0;
		mFrameCount = 0;
		Trace.endSection();
		}

		@@ -113,43 +117,70 @@ class TouchLatencyView extends View implements View.OnTouchListener {
		}
		}

		private Paint getBallColor() {
		if (mFps > 75)
		return mGreenPaint;
		else if (mFps > 45)
		return mYellowPaint;
		else
		return mRedPaint;
		}

		private void drawBall(Canvas canvas) {
		Trace.beginSection("TouchLatencyView drawBall");
		int width = canvas.getWidth();
		int height = canvas.getHeight();
		float fps = 0f;

		// Update position
		mBallX += mVelocityX;
		mBallY += mVelocityY;
		long t = System.nanoTime();
		long tDiff = t - mLastDrawNano;
		mLastDrawNano = t;
		mFrameCount++;

		// Clamp and change velocity if necessary
		float left = mBallX - BALL_RADIUS;
		if (left < 0) {
		left = 0;
		mVelocityX *= -1;
		if (tDiff < SEC_TO_NANOS) {
		fps = 1f * SEC_TO_NANOS / tDiff;
		}

		float top = mBallY - BALL_RADIUS;
		if (top < 0) {
		top = 0;
		mVelocityY *= -1;
		long fDiff = t - mLastFpsUpdate;
		if (Math.abs(mFps - fps) > FPS_UPDATE_THRESHOLD) {
		mFps = fps;
		mLastFpsUpdate = t;
		mFrameCount = 0;
		} else if (fDiff > SEC_TO_NANOS) {
		mFps = 1f * mFrameCount * SEC_TO_NANOS / fDiff;
		mLastFpsUpdate = t;
		mFrameCount = 0;
		}

		float right = mBallX + BALL_RADIUS;
		if (right > width) {
		right = width;
		mVelocityX *= -1;
		final long pos = t * BALL_VELOCITY / SEC_TO_NANOS;
		final long xMax = width - BALL_DIAMETER;
		final long yMax = height - BALL_DIAMETER;
		long xOffset = pos % xMax;
		long yOffset = pos % yMax;

		float left, right, top, bottom;

		if (((pos / xMax) & 1) == 0) {
		left = xMax - xOffset;
		} else {
		left = xOffset;
		}
		right = left + BALL_DIAMETER;

		float bottom = mBallY + BALL_RADIUS;
		if (bottom > height) {
		bottom = height;
		mVelocityY *= -1;
		if (((pos / yMax) & 1) == 0) {
		top = yMax - yOffset;
		} else {
		top = yOffset;
		}
		bottom = top + BALL_DIAMETER;

		// Draw the ball
		canvas.drawColor(BACKGROUND_COLOR);
		canvas.drawOval(left, top, right, bottom, mYellowPaint);
		canvas.drawOval(left, top, right, bottom, getBallColor());
		DecimalFormat df = new DecimalFormat("fps: #.##");
		df.setRoundingMode(RoundingMode.HALF_UP);
		canvas.drawText(df.format(mFps), width, 100, mTextPaint);

		invalidate();
		Trace.endSection();
		}
		@@ -176,15 +207,15 @@ class TouchLatencyView extends View implements View.OnTouchListener {
		Trace.endSection();
		}

		private Paint mBluePaint, mGreenPaint, mYellowPaint, mRedPaint;
		private final Paint mBluePaint, mGreenPaint, mYellowPaint, mRedPaint, mTextPaint;
		private int mMode;

		private boolean mTouching;
		private float mTouchX, mTouchY;
		private float mLastDrawnX, mLastDrawnY;

		private float mBallX, mBallY;
		private float mVelocityX, mVelocityY;
		private long mLastDrawNano, mLastFpsUpdate, mFrameCount;
		private float mFps;
		}

		public class TouchLatencyActivity extends Activity {

tests/TouchLatency/build.gradle

+3 −1

Original line number	Diff line number	Diff line
		@@ -3,9 +3,10 @@
		buildscript {
		repositories {
		jcenter()
		google()
		}
		dependencies {
		classpath 'com.android.tools.build:gradle:1.1.0'
		classpath 'com.android.tools.build:gradle:3.2.1'

		// NOTE: Do not place your application dependencies here; they belong
		// in the individual module build.gradle files
		@@ -15,5 +16,6 @@ buildscript {
		allprojects {
		repositories {
		jcenter()
		google()
		}
		}

tests/TouchLatency/gradle/wrapper/gradle-wrapper.properties

+2 −2

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		#Wed Apr 10 15:27:10 PDT 2013
		#Tue Nov 27 13:37:59 PST 2018
		distributionBase=GRADLE_USER_HOME
		distributionPath=wrapper/dists
		zipStoreBase=GRADLE_USER_HOME
		zipStorePath=wrapper/dists
		distributionUrl=https\://services.gradle.org/distributions/gradle-2.2.1-all.zip
		distributionUrl=https\://services.gradle.org/distributions/gradle-4.6-all.zip