Android Open Source - ZXingFragment Reticle

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License

The source code is released under:

Apache License

Java Source Code

package de.klimek.zxingfragment;
//from   w w w.  j  a v  a2 s.co m
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Rect;
import android.util.AttributeSet;
import android.view.View;

public class Reticle extends View {
  private Paint mPaint;
  private Rect mTargetRect = new Rect();
  private int mDisplayOrientation;

  public Reticle(Context context, AttributeSet attrs) {
    super(context, attrs);
    mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
    mPaint.setStrokeWidth(5);
  }

  public void drawTargetRect(Canvas canvas) {
     double heightFraction = Decoder.BOUNDS_FRACTION;
     double widthFraction = Decoder.BOUNDS_FRACTION;
     if (mDisplayOrientation == 90 || mDisplayOrientation == 270) {
       heightFraction = Decoder.VERTICAL_HEIGHT_FRACTION;
     }
     
     int height = (int) (canvas.getHeight() * heightFraction);
     int width = (int) (canvas.getWidth() * widthFraction);
     int left = (int) (canvas.getWidth() * ((1 - widthFraction) / 2));
     int top = (int) (canvas.getHeight() * ((1 - heightFraction) / 2));
     int right = left + width;
     int bottom = top + height;
    mTargetRect.set(left, top, right, bottom);
    canvas.drawRect(mTargetRect, mPaint);
  }

  @Override
  protected void onDraw(Canvas canvas) {
    super.onDraw(canvas);
    mPaint.setARGB(100, 0x9F, 0xCD, 0x46); // TODO Resource
    drawTargetRect(canvas);
  }

  public void setDisplayOrientation(int displayOrientation) {
    mDisplayOrientation = displayOrientation;
  }

}

Java Source Code List

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