How to use

viewToSourceX

method

in

com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView

/**
 * Convert screen coordinate to source coordinate.
 * @param vx view X coordinate.
 * @param vy view Y coordinate.
 * @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(float vx, float vy, @NonNull PointF sTarget) {
  if (vTranslate == null) {
    return null;
  }
  sTarget.set(viewToSourceX(vx), viewToSourceY(vy));
  return sTarget;
}

/**
 * Determine whether tile is visible.
 */
private boolean tileVisible(Tile tile) {
  float sVisLeft = viewToSourceX(0),
    sVisRight = viewToSourceX(getWidth()),
    sVisTop = viewToSourceY(0),
    sVisBottom = viewToSourceY(getHeight());
  return !(sVisLeft > tile.sRect.right || tile.sRect.left > sVisRight || sVisTop > tile.sRect.bottom || tile.sRect.top > sVisBottom);
}

    (int)viewToSourceX(vRect.left),
    (int)viewToSourceY(vRect.top),
    (int)viewToSourceX(vRect.right),
    (int)viewToSourceY(vRect.bottom));
fileSRect(fRect, fRect);

/**
 * Convert screen coordinate to source coordinate.
 */
public final PointF viewToSourceCoord(float vx, float vy, PointF sTarget) {
  if (vTranslate == null) {
    return null;
  }
  sTarget.set(viewToSourceX(vx), viewToSourceY(vy));
  return sTarget;
}

/**
 * Determine whether tile is visible.
 */
private boolean tileVisible(Tile tile) {
  float sVisLeft = viewToSourceX(0),
    sVisRight = viewToSourceX(getWidth()),
    sVisTop = viewToSourceY(0),
    sVisBottom = viewToSourceY(getHeight());
  return !(sVisLeft > tile.sRect.right || tile.sRect.left > sVisRight || sVisTop > tile.sRect.bottom || tile.sRect.top > sVisBottom);
}