package com.DeviceTest.view;
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import com.DeviceTest.R;
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import com.DeviceTest.R.drawable;
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import android.content.Context;
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import android.graphics.Canvas;
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import android.graphics.Color;
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import android.graphics.Paint;
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import android.graphics.drawable.Drawable;
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import android.util.AttributeSet;
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import android.view.View;
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public class CompassView extends View {
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private float yaw = 0;
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private Paint paint;
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private Drawable compass;
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public CompassView(Context context) {
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this(context, null);
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}
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public CompassView(Context context, AttributeSet attrs) {
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this(context, attrs, 0);
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}
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public CompassView(Context context, AttributeSet attrs, int defStyle) {
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super(context, attrs, defStyle);
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paint = new Paint();
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paint.setColor(Color.RED);
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// paint.setStyle(Style.FILL_AND_STROKE);
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paint.setStrokeWidth(2);
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compass = getResources().getDrawable(R.drawable.compass);
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this.setBackgroundColor(Color.WHITE);
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}
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public void update(float yaw) {
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if (Math.abs(this.yaw - yaw) > 1) {
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this.yaw = yaw;
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postInvalidate();
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}
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}
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protected void onDraw(Canvas canvas) {
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int height = getHeight();
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int width = getWidth();
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int midX = width / 2;
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int midY = height / 2;
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int size = (height > width ? width : height) * 3 / 8;
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compass.setBounds(midX - size, midY - size, midX + size, midY + size);
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canvas.save();
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canvas.rotate(-yaw, midX, midY);
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compass.draw(canvas);
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canvas.restore();
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paint.setTextSize(size / 3);
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canvas.drawText((int) yaw + "\260", 0, size / 3, paint);
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}
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}
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