Android应用源码之thermometer_android仪表盘.zip

package com.mindtherobot.samples.thermometer; import java.util.List; import android.content.Context; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.BitmapShader; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.LightingColorFilter; import android.graphics.LinearGradient; import android.graphics.Matrix; import android.graphics.Paint; import android.graphics.Path; import android.graphics.RadialGradient; import android.graphics.RectF; import android.graphics.Shader; import android.graphics.Typeface; import android.hardware.Sensor; import android.hardware.SensorEvent; import android.hardware.SensorEventListener; import android.hardware.SensorManager; import android.os.Bundle; import android.os.Handler; import android.os.Parcelable; import android.util.AttributeSet; import android.util.Log; import android.view.View; public final class Thermometer extends View implements SensorEventListener { private static final String TAG = Thermometer.class.getSimpleName(); private Handler handler; // drawing tools private RectF rimRect; private Paint rimPaint; private Paint rimCirclePaint; private RectF faceRect; private Bitmap faceTexture; private Paint facePaint; private Paint rimShadowPaint; private Paint scalePaint; private RectF scaleRect; private Paint titlePaint; private Path titlePath; private Paint logoPaint; private Bitmap logo; private Matrix logoMatrix; private float logoScale; private Paint handPaint; private Path handPath; private Paint handScrewPaint; private Paint backgroundPaint; // end drawing tools private Bitmap background; // holds the cached static part // scale configuration private static final int totalNicks = 100; private static final float degreesPerNick = 360.0f / totalNicks; private static final int centerDegree = 40; // the one in the top center (12 o'clock) private static final int minDegrees = -30; private static final int maxDegrees = 110; // hand dynamics -- all are angular expressed in F degrees private boolean handInitialized = false; private float handPosition = centerDegree; private float handTarget = centerDegree; private float handVelocity = 0.0f; private float handAcceleration = 0.0f; private long lastHandMoveTime = -1L; public Thermometer(Context context) { super(context); init(); } public Thermometer(Context context, AttributeSet attrs) { super(context, attrs); init(); } public Thermometer(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); init(); } @Override protected void onAttachedToWindow() { super.onAttachedToWindow(); attachToSensor(); } @Override protected void onDetachedFromWindow() { detachFromSensor(); super.onDetachedFromWindow(); } @Override protected void onRestoreInstanceState(Parcelable state) { Bundle bundle = (Bundle) state; Parcelable superState = bundle.getParcelable("superState"); super.onRestoreInstanceState(superState); handInitialized = bundle.getBoolean("handInitialized"); handPosition = bundle.getFloat("handPosition"); handTarget = bundle.getFloat("handTarget"); handVelocity = bundle.getFloat("handVelocity"); handAcceleration = bundle.getFloat("handAcceleration"); lastHandMoveTime = bundle.getLong("lastHandMoveTime"); } @Override protected Parcelable onSaveInstanceState() { Parcelable superState = super.onSaveInstanceState(); Bundle state = new Bundle(); state.putParcelable("superState", superState); state.putBoolean("handInitialized", handInitialized); state.putFloat("handPosition", handPosition); state.putFloat("handTarget", handTarget); state.putFloat("handVelocity", handVelocity); state.putFloat("handAcceleration", handAcceleration); state.putLong("lastHandMoveTime", lastHandMoveTime); return state; } private void init() { handler = new Handler(); initDrawingTools(); } private String getTitle() { return "mindtherobot.com"; } private SensorManager getSensorManager() { return (SensorManager) getContext().getSystemService(Context.SENSOR_SERVICE); } private void attachToSensor() { SensorManager sensorManager = getSensorManager(); List<Sensor> sensors = sensorManager.getSensorList(Sensor.TYPE_TEMPERATURE); if (sensors.size() > 0) { Sensor sensor = sensors.get(0); sensorManager.registerListener(this, sensor, SensorManager.SENSOR_DELAY_FASTEST, handler); } else { Log.e(TAG, "No temperature sensor found"); } } private void detachFromSensor() { SensorManager sensorManager = getSensorManager(); sensorManager.unregisterListener(this); } private void initDrawingTools() { rimRect = new RectF(0.1f, 0.1f, 0.9f, 0.9f); // the linear gradient is a bit skewed for realism rimPaint = new Paint(); rimPaint.setFlags(Paint.ANTI_ALIAS_FLAG); rimPaint.setShader(new LinearGradient(0.40f, 0.0f, 0.60f, 1.0f, Color.rgb(0xf0, 0xf5, 0xf0), Color.rgb(0x30, 0x31, 0x30), Shader.TileMode.CLAMP)); rimCirclePaint = new Paint(); rimCirclePaint.setAntiAlias(true); rimCirclePaint.setStyle(Paint.Style.STROKE); rimCirclePaint.setColor(Color.argb(0x4f, 0x33, 0x36, 0x33)); rimCirclePaint.setStrokeWidth(0.005f); float rimSize = 0.02f; faceRect = new RectF(); faceRect.set(rimRect.left + rimSize, rimRect.top + rimSize, rimRect.right - rimSize, rimRect.bottom - rimSize); faceTexture = BitmapFactory.decodeResource(getContext().getResources(), R.drawable.plastic); BitmapShader paperShader = new BitmapShader(faceTexture, Shader.TileMode.MIRROR, Shader.TileMode.MIRROR); Matrix paperMatrix = new Matrix(); facePaint = new Paint(); facePaint.setFilterBitmap(true); paperMatrix.setScale(1.0f / faceTexture.getWidth(), 1.0f / faceTexture.getHeight()); paperShader.setLocalMatrix(paperMatrix); facePaint.setStyle(Paint.Style.FILL); facePaint.setShader(paperShader); rimShadowPaint = new Paint(); rimShadowPaint.setShader(new RadialGradient(0.5f, 0.5f, faceRect.width() / 2.0f, new int[] { 0x00000000, 0x00000500, 0x50000500 }, new float[] { 0.96f, 0.96f, 0.99f }, Shader.TileMode.MIRROR)); rimShadowPaint.setStyle(Paint.Style.FILL); scalePaint = new Paint(); scalePaint.setStyle(Paint.Style.STROKE); scalePaint.setColor(0x9f004d0f); scalePaint.setStrokeWidth(0.005f); scalePaint.setAntiAlias(true); scalePaint.setTextSize(0.045f); scalePaint.setTypeface(Typeface.SANS_SERIF); scalePaint.setTextScaleX(0.8f); scalePaint.setTextAlign(Paint.Align.CENTER); float scalePosition = 0.10f; scaleRect = new RectF(); scaleRect.set(faceRect.left + scalePosition, faceRect.top + scalePosition, faceRect.right - scalePosition, faceRect.bottom - scalePosition); titlePaint = new Paint(); titlePaint.setColor(0xaf946109); titlePaint.setAntiAlias(true); titlePaint.setTypeface(Typeface.DEFAULT_BOLD); titlePaint.setTextAlign(Paint.Align.CENTER); titlePaint.setTextSize(0.05f); titlePaint.setTextScaleX(0.8f); titlePath = new Path(); titlePath.addArc(new RectF(0.24f, 0.24f, 0.76f, 0.76f), -180.0f, -180.0f); logoPaint = new Paint(); logoPaint.setFilterBitmap(true); logo = BitmapFactory.decodeResource(getContext().getResources(), R.drawable.logo); logoMatrix = new Matrix(); logoScale = (1.0f / logo.getWidth()) * 0.3f;; logoMatrix.setScale(logoScale, logoScale); handPaint = new Paint(); handPaint.setAntiAlias(true); handPaint.setColor(0xff392f2c); handPaint.setShadowLayer(0.01f, -0.005f, -0.005f, 0x7f000000); handPaint.setStyle(Paint.Style.FILL); handP