Android Open Source - android-arduino-bricks Single Motor View

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Back to project page android-arduino-bricks.

License

The source code is released under:

MIT License

Java Source Code

package org.hbabcock.btc;
// w w  w . j  a v a  2  s . co m
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Rect;
import android.util.AttributeSet;
import android.view.View;

//
// Designed to be used as a super-class.
//
// Sub-classes:
//   DualMotorView
//   HorizontalSingleMotorSlider
//   VerticalSingleMotorSlider
//
public class SingleMotorView extends View {
  protected static final int mLineWidth = 6;
  protected static final float mRadius = 20;

  protected int mCenterX;
  protected int mCenterY;
  protected boolean mEnabled = false;
  protected int mHeight;
  protected int mWidth;
  protected int mX;
  protected int mY;

  private Rect mBounds;
  
  protected int mColorBackground = Color.BLACK;
  protected int mColorDisabled = Color.RED;
  protected int mColorEnabled = Color.WHITE;
  protected int mColorForeground = Color.DKGRAY;

  protected Paint mPaintFill;
  protected Paint mPaintLine;

  protected int mSign1 = 0;
    protected int mMotorId1 = 0;

  public SingleMotorView(Context context, AttributeSet attrs) {
    super(context, attrs);

      mPaintFill = new Paint();
      mPaintFill.setStyle(Paint.Style.FILL);
      mPaintLine = new Paint();
      mPaintLine.setStrokeWidth(mLineWidth);
      mPaintLine.setStyle(Paint.Style.STROKE);
  }

  public byte calcDir(float speed, int sign){
    byte dir = 0;
    if (speed < 0.0){
      dir = 1;
    }
    if (sign == 0){
      dir = (byte)(dir - 1);
    }
    return dir;
  }

  public byte calcSpeed(float fspeed){
    fspeed = (float)Math.abs(fspeed * 255.0);
    if (fspeed > 255.0) fspeed = (float)255.0;
    if (fspeed < 35.0) fspeed = (float)0.0;
    return (byte)fspeed;
  }

  //
  // motorId - which motor, 0 - 7.
  // sign - motor direction, 0 = "forward", 1 = "backward".
  //
  public void configure(int motorId, int sign){
    mMotorId1 = motorId;
    mSign1 = sign;
  }
  
    @Override
    protected void onDraw(Canvas canvas) {
      super.onDraw(canvas);
        mPaintFill.setColor(mColorBackground);
    canvas.drawRect(mBounds, mPaintFill);
    
        mPaintLine.setColor(mColorForeground);
    canvas.drawRect(mBounds, mPaintLine);
    }
    
    @Override
    protected void onSizeChanged(int newWidth, int newHeight, int xOld, int yOld)
    {
      super.onSizeChanged(newWidth, newHeight, xOld, yOld);
      
      mBounds = new Rect(0, 0, newWidth, newHeight);
      
      mWidth = newWidth;
      mHeight = newHeight;
      
      mCenterX = mWidth/2;
      mCenterY = mHeight/2;
      
      mX = mCenterX;
      mY = mCenterY;
    }
    
    public void update(float clickX, float clickY){
      mX = (int)clickX;
      mY = (int)clickY;
      if (mX < 0) mX = 0;
      if (mY < 0) mY = 0;
      if (mX > mWidth) mX = mWidth;
      if (mX > mHeight) mY = mHeight;      
      invalidate();
    }
    
    public void setEnabled(boolean enabled){
      mEnabled = enabled;
      invalidate();
    }
    
    protected void stop(BluetoothIO bluetoothIO){
      bluetoothIO.stopMotor(mMotorId1);
      mX = mCenterX;
      mY = mCenterY;
      invalidate();
    }
    
}

Java Source Code List

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