Android Open Source - Android-Photo-Zoom Photo View

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Back to project page Android-Photo-Zoom.
License

The source code is released under:
Apache License
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Java Source Code

package uk.co.senab.photoview;
/*from   w  w w . j  a  v a 2  s  . c  om*/
import uk.co.senab.photoview.PhotoViewAttacher.OnMatrixChangedListener;
import uk.co.senab.photoview.PhotoViewAttacher.OnPhotoTapListener;
import uk.co.senab.photoview.PhotoViewAttacher.OnViewTapListener;
import android.content.Context;
import android.graphics.RectF;
import android.graphics.drawable.Drawable;
import android.net.Uri;
import android.util.AttributeSet;
import android.util.Log;
import android.widget.ImageView;

public class PhotoView extends ImageView implements IPhotoView {

  private final PhotoViewAttacher mAttacher;

  private ScaleType mPendingScaleType;

  public PhotoView(Context context) {
    this(context, null);
  }

  public PhotoView(Context context, AttributeSet attr) {
    this(context, attr, 0);
  }
  
  public PhotoView(Context context, AttributeSet attr, int defStyle) {
    super(context, attr, defStyle);
    super.setScaleType(ScaleType.MATRIX);
    mAttacher = new PhotoViewAttacher(this);

    if (null != mPendingScaleType) {
      setScaleType(mPendingScaleType);
      mPendingScaleType = null;
    }
  }

  @Override
  public boolean canZoom() {
    return mAttacher.canZoom();
  }

  @Override
  public RectF getDisplayRect() {
    return mAttacher.getDisplayRect();
  }

  @Override
  public float getMinScale() {
    return mAttacher.getMinScale();
  }

  @Override
  public float getMidScale() {
    return mAttacher.getMidScale();
  }

  @Override
  public float getMaxScale() {
    return mAttacher.getMaxScale();
  }

  @Override
  public float getScale() {
    return mAttacher.getScale();
  }

  @Override
  public ScaleType getScaleType() {
    return mAttacher.getScaleType();
  }

    @Override
    public void setAllowParentInterceptOnEdge(boolean allow) {
        mAttacher.setAllowParentInterceptOnEdge(allow);
    }

    @Override
  public void setMinScale(float minScale) {
    mAttacher.setMinScale(minScale);
  }

  @Override
  public void setMidScale(float midScale) {
    mAttacher.setMidScale(midScale);
  }

  @Override
  public void setMaxScale(float maxScale) {
    mAttacher.setMaxScale(maxScale);
  }

  @Override
  // setImageBitmap calls through to this method
  public void setImageDrawable(Drawable drawable) {
    super.setImageDrawable(drawable);
    if (null != mAttacher) {
      mAttacher.update();
    }
  }

  @Override
  public void setImageResource(int resId) {
    super.setImageResource(resId);
    if (null != mAttacher) {
      mAttacher.update();
    }
  }

  @Override
  public void setImageURI(Uri uri) {
    super.setImageURI(uri);
    if (null != mAttacher) {
      mAttacher.update();
    }
  }

  @Override
  public void setOnMatrixChangeListener(OnMatrixChangedListener listener) {
    mAttacher.setOnMatrixChangeListener(listener);
  }

  @Override
  public void setOnLongClickListener(OnLongClickListener l) {
    mAttacher.setOnLongClickListener(l);
  }

  @Override
  public void setOnPhotoTapListener(OnPhotoTapListener listener) {
    mAttacher.setOnPhotoTapListener(listener);
  }

  @Override
  public void setOnViewTapListener(OnViewTapListener listener) {
    mAttacher.setOnViewTapListener(listener);
  }

  @Override
  public void setScaleType(ScaleType scaleType) {
    if (null != mAttacher) {
      mAttacher.setScaleType(scaleType);
    } else {
      mPendingScaleType = scaleType;
    }
  }

  @Override
  public void setZoomable(boolean zoomable) {
    mAttacher.setZoomable(zoomable);
  }

  @Override
  public void zoomTo(float scale, float focalX, float focalY) {
    mAttacher.zoomTo(scale, focalX, focalY);
  }

  @Override
  protected void onDetachedFromWindow() {
    mAttacher.cleanup();
    super.onDetachedFromWindow();
  }

  public void clearZoom() {
    if (mAttacher.getScale() > PhotoViewAttacher.DEFAULT_MIN_SCALE) {
      mAttacher.zoomTo(PhotoViewAttacher.DEFAULT_MIN_SCALE, getWidth()/2, getHeight()/2);
    }
  }
  
}
Java Source Code List
