How to use

viewToSourceCoord

method

in

com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView

/**
 * Convert screen coordinate to source coordinate.
 * @param vxy view X/Y coordinate.
 * @return a coordinate representing the corresponding source coordinate.
 */
@Nullable
public final PointF viewToSourceCoord(PointF vxy) {
  return viewToSourceCoord(vxy.x, vxy.y, new PointF());
}

/**
 * Convert screen coordinate to source coordinate.
 * @param vx view X coordinate.
 * @param vy view Y coordinate.
 * @return a coordinate representing the corresponding source coordinate.
 */
@Nullable
public final PointF viewToSourceCoord(float vx, float vy) {
  return viewToSourceCoord(vx, vy, new PointF());
}

/**
 * Convert screen coordinate to source coordinate.
 * @param vxy view coordinates to convert.
 * @param sTarget target object for result. The same instance is also returned.
 * @return source coordinates. This is the same instance passed to the sTarget param.
 */
@Nullable
public final PointF viewToSourceCoord(PointF vxy, @NonNull PointF sTarget) {
  return viewToSourceCoord(vxy.x, vxy.y, sTarget);
}

  @Override
  public boolean onDoubleTap(MotionEvent e) {
    if (imageView.isReady()) {
      PointF sCoord = imageView.viewToSourceCoord(e.getX(), e.getY());
      Toast.makeText(getApplicationContext(), "Double tap: " + ((int)sCoord.x) + ", " + ((int)sCoord.y), Toast.LENGTH_SHORT).show();
    } else {
      Toast.makeText(getApplicationContext(), "Double tap: Image not ready", Toast.LENGTH_SHORT).show();
    }
    return true;
  }
});

@Override
public boolean onSingleTapConfirmed(MotionEvent e) {
  if (imageView.isReady()) {
    PointF sCoord = imageView.viewToSourceCoord(e.getX(), e.getY());
    Toast.makeText(getApplicationContext(), "Single tap: " + ((int)sCoord.x) + ", " + ((int)sCoord.y), Toast.LENGTH_SHORT).show();
  } else {
    Toast.makeText(getApplicationContext(), "Single tap: Image not ready", Toast.LENGTH_SHORT).show();
  }
  return true;
}
@Override

@Override
public void onLongPress(MotionEvent e) {
  if (imageView.isReady()) {
    PointF sCoord = imageView.viewToSourceCoord(e.getX(), e.getY());
    Toast.makeText(getApplicationContext(), "Long press: " + ((int)sCoord.x) + ", " + ((int)sCoord.y), Toast.LENGTH_SHORT).show();
  } else {
    Toast.makeText(getApplicationContext(), "Long press: Image not ready", Toast.LENGTH_SHORT).show();
  }
}
@Override

/**
 * Returns the source point at the center of the view.
 * @return the source coordinates current at the center of the view.
 */
@Nullable
public final PointF getCenter() {
  int mX = getWidth()/2;
  int mY = getHeight()/2;
  return viewToSourceCoord(mX, mY);
}

  @Override
  public boolean onDoubleTap(MotionEvent e) {
    if (zoomEnabled && readySent && vTranslate != null) {
      // Hacky solution for #15 - after a double tap the GestureDetector gets in a state
      // where the next fling is ignored, so here we replace it with a new one.
      setGestureDetector(context);
      if (quickScaleEnabled) {
        // Store quick scale params. This will become either a double tap zoom or a
        // quick scale depending on whether the user swipes.
        vCenterStart = new PointF(e.getX(), e.getY());
        vTranslateStart = new PointF(vTranslate.x, vTranslate.y);
        scaleStart = scale;
        isQuickScaling = true;
        isZooming = true;
        quickScaleLastDistance = -1F;
        quickScaleSCenter = viewToSourceCoord(vCenterStart);
        quickScaleVStart = new PointF(e.getX(), e.getY());
        quickScaleVLastPoint = new PointF(quickScaleSCenter.x, quickScaleSCenter.y);
        quickScaleMoved = false;
        // We need to get events in onTouchEvent after this.
        return false;
      } else {
        // Start double tap zoom animation.
        doubleTapZoom(viewToSourceCoord(new PointF(e.getX(), e.getY())), new PointF(e.getX(), e.getY()));
        return true;
      }
    }
    return super.onDoubleTapEvent(e);
  }
});

/**
 * Convert screen coordinate to source coordinate.
 */
public final PointF viewToSourceCoord(PointF vxy, PointF sTarget) {
  return viewToSourceCoord(vxy.x, vxy.y, sTarget);
}

/**
 * Convert screen coordinate to source coordinate.
 */
public final PointF viewToSourceCoord(float vx, float vy) {
  return viewToSourceCoord(vx, vy, new PointF());
}

/**
 * Convert screen coordinate to source coordinate.
 */
public final PointF viewToSourceCoord(PointF vxy) {
  return viewToSourceCoord(vxy.x, vxy.y, new PointF());
}

  @Override
  public boolean onDoubleTap(MotionEvent e) {
    if (zoomEnabled && readySent && vTranslate != null) {
      // Hacky solution for #15 - after a double tap the GestureDetector gets in a state
      // where the next fling is ignored, so here we replace it with a new one.
      setGestureDetector(context);
      if (quickScaleEnabled) {
        // Store quick scale params. This will become either a double tap zoom or a
        // quick scale depending on whether the user swipes.
        vCenterStart = new PointF(e.getX(), e.getY());
        vTranslateStart = new PointF(vTranslate.x, vTranslate.y);
        scaleStart = scale;
        isQuickScaling = true;
        isZooming = true;
        quickScaleLastDistance = -1F;
        quickScaleSCenter = viewToSourceCoord(vCenterStart);
        quickScaleVStart = new PointF(e.getX(), e.getY());
        quickScaleVLastPoint = new PointF(quickScaleSCenter.x, quickScaleSCenter.y);
        quickScaleMoved = false;
        // We need to get events in onTouchEvent after this.
        return false;
      } else {
        // Start double tap zoom animation.
        doubleTapZoom(viewToSourceCoord(new PointF(e.getX(), e.getY())), new PointF(e.getX(), e.getY()));
        return true;
      }
    }
    return super.onDoubleTapEvent(e);
  }
});

/**
 * Returns the source point at the center of the view.
 */
public final PointF getCenter() {
  int mX = getWidth()/2;
  int mY = getHeight()/2;
  return viewToSourceCoord(mX, mY);
}