Android Open Source - TouchImageView Single Touch Image View Activity

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License

The source code is released under:

opyright (c) 2012 Michael Ortiz Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Softw...

Java Source Code

package com.ortiz.touch;
import java.text.DecimalFormat;
//ww w  . ja  v a 2  s .  co  m
import android.app.Activity;
import android.graphics.PointF;
import android.graphics.RectF;
import android.os.Bundle;
import android.widget.TextView;

import com.example.touch.R;
import com.ortiz.touch.TouchImageView.OnTouchImageViewListener;


public class SingleTouchImageViewActivity extends Activity {
  
  private TouchImageView image;
  private TextView scrollPositionTextView;
  private TextView zoomedRectTextView;
  private TextView currentZoomTextView;
  private DecimalFormat df;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_single_touchimageview);
    //
    // DecimalFormat rounds to 2 decimal places.
    //
    df = new DecimalFormat("#.##");
    scrollPositionTextView = (TextView) findViewById(R.id.scroll_position);
    zoomedRectTextView = (TextView) findViewById(R.id.zoomed_rect);
    currentZoomTextView = (TextView) findViewById(R.id.current_zoom);
    image = (TouchImageView) findViewById(R.id.img);
    
    //
    // Set the OnTouchImageViewListener which updates edit texts
    // with zoom and scroll diagnostics.
    //
    image.setOnTouchImageViewListener(new OnTouchImageViewListener() {
      
      @Override
      public void onMove() {
        PointF point = image.getScrollPosition();
        RectF rect = image.getZoomedRect();
        float currentZoom = image.getCurrentZoom();
        boolean isZoomed = image.isZoomed();
        scrollPositionTextView.setText("x: " + df.format(point.x) + " y: " + df.format(point.y));
        zoomedRectTextView.setText("left: " + df.format(rect.left) + " top: " + df.format(rect.top)
            + "\nright: " + df.format(rect.right) + " bottom: " + df.format(rect.bottom));
        currentZoomTextView.setText("getCurrentZoom(): " + currentZoom + " isZoomed(): " + isZoomed);
      }
    });
  }
}

Java Source Code List

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