Android Open Source - CamTimer Picture View

From Project

Back to project page CamTimer.

License

The source code is released under:

GNU General Public License

If you think the Android project CamTimer listed in this page is inappropriate, such as containing malicious code/tools or violating the copyright, please email info at java2s dot com, thanks.

Java Source Code

package com.dozingcatsoftware.cameratimer;
//www.  j av a2  s  . c  o  m
import com.dozingcatsoftware.util.AndroidUtils;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Rect;
import android.net.Uri;
import android.util.AttributeSet;
import android.view.View;

public class PictureView extends View {

  public PictureView(Context context, AttributeSet attrs) {
    super(context, attrs);
  }
  
  Bitmap bitmap;
  float cornerImageRatio = 1.0f;
  boolean drawBorder = false;
  Uri imageURI, lastImageURI;
  
  public void setImageFromURI(Uri newImageURI) {
    this.lastImageURI = this.imageURI;
    this.imageURI = newImageURI;
    if (this.imageURI==null) {
      this.bitmap = null;
    }
    this.invalidate();
  }
  
  public Uri getImageURI() {
    return imageURI;
  }
  
  @Override
  protected void onDraw (Canvas canvas) {
    // has to be done here because in setImageFromURI reported view size is still 0??
    if (imageURI!=null) {
      if (!imageURI.equals(lastImageURI)) {
        try {
          Rect imageRect = rectForImage();
          bitmap = AndroidUtils.scaledBitmapFromURIWithMinimumSize(this.getContext(), imageURI, imageRect.width(), imageRect.height());
        }
        catch(Exception ex) {
          bitmap = null;
        }
      }
      if (bitmap!=null) {
        Rect imageRect = rectForImage();
        
        if (drawBorder) {
          // draw black and white borders to identify bounds
          Paint cornerEdgePaint = new Paint();
          cornerEdgePaint.setStyle(Paint.Style.STROKE);
          cornerEdgePaint.setARGB(255,0,0,0);
          canvas.drawRect(imageRect, cornerEdgePaint);
          
          cornerEdgePaint.setARGB(255,255,255,255);
          imageRect.left += 1;
          imageRect.bottom -= 1;
          canvas.drawRect(imageRect, cornerEdgePaint);

          imageRect.left += 1;
          imageRect.bottom -= 1;
        }
        canvas.drawBitmap(bitmap, null, imageRect, null);
      }
    }
  }

  Rect rectForImage() {
    if (bitmap!=null) {
      float bitmapRatio = 1.0f*bitmap.getWidth() / bitmap.getHeight();
      float viewRatio = 1.0f*this.getWidth() / this.getHeight();
      if (bitmapRatio < viewRatio) {
        // bitmap is taller than view, use full view height and scaled width
        int width = (int)(this.getHeight()*bitmapRatio);
        int xstart = (this.getWidth() - width) / 2;
        return new Rect(xstart, 0, xstart + width, this.getHeight());
      }
      if (bitmapRatio > viewRatio) {
        // bitmap is wider than view, use full view width and scaled height
        int height = (int)(this.getWidth()/bitmapRatio);
        int ystart = (this.getHeight() - height) / 2;
        return new Rect(0, ystart, this.getWidth(), ystart + height);
      }
    }
    return new Rect(0, 0, this.getWidth(), this.getHeight());
  }
  
  public boolean isPointInCornerImage(float x, float y) {
    if (bitmap==null || cornerImageRatio<=0) return false;
    Rect cornerImageRect = rectForImage();
    return cornerImageRect.contains((int)x, (int)y);
  }

}

Java Source Code List