/*
* org.openmicroscopy.shoola.util.ui.lens.ZoomWindowUI.java
*
*------------------------------------------------------------------------------
* Copyright (C) 2006 University of Dundee. All rights reserved.
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*------------------------------------------------------------------------------
*/
package org.openmicroscopy.shoola.util.ui.lens;
//Java imports
import java.awt.Dimension;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.event.MouseEvent;
import java.awt.event.MouseMotionListener;
import javax.swing.JComponent;
import javax.swing.JLayeredPane;
import javax.swing.JScrollBar;
import javax.swing.JScrollPane;
import javax.swing.JViewport;
//Third-party libraries
//Application-internal dependencies
/**
* The ZoomWindowUI is the dialog box used to display the zoomed image. It
* contains the zoomPanel which displays the zoomed image and the coordinates
* of the lens.
*
* @author Jean-Marie Burel
* <a href="mailto:j.burel@dundee.ac.uk">j.burel@dundee.ac.uk</a>
* @author Donald MacDonald
* <a href="mailto:donald@lifesci.dundee.ac.uk">donald@lifesci.dundee.ac.uk</a>
* @version 3.0
* <small>
* (<b>Internal version:</b> $Revision: $Date: $)
* </small>
* @since OME2.2
*/
class ZoomWindowUI
extends JScrollPane
implements MouseMotionListener
{
/** Flag indicating if the experimenter uses the scrollbars. */
private boolean adjusting;
/** Panel holding the zoomed Image */
private JComponent canvas;
/** Layered pane hosting the component. */
private JLayeredPane layeredPane;
/** The lens model. */
private LensModel model;
/** Initializes the components composing the display. */
private void initComponents()
{
layeredPane = new JLayeredPane();
canvas = new ZoomBIPanel(model);
layeredPane.add(canvas, Integer.valueOf(0));
getVerticalScrollBar().addMouseMotionListener(this);
getHorizontalScrollBar().addMouseMotionListener(this);
}
/** Builds and lays out the GUI. */
private void buildGUI()
{
JViewport viewport = getViewport();
viewport.setLayout(null);
viewport.setBackground(model.getBackgroundColor());
viewport.add(layeredPane);
}
/**
* Returns <code>true</code> if the scrollbars are visible,
* <code>false</code> otherwise.
*
* @return See above.
*/
private boolean scrollbarsVisible()
{
JScrollBar hBar = getHorizontalScrollBar();
JScrollBar vBar = getVerticalScrollBar();
if (hBar.isVisible()) return true;
if (vBar.isVisible()) return true;
return false;
}
/**
* Creates a new instance.
*
* @param model The parent component of the control.
* Mustn't be <code>null</code>.
*/
ZoomWindowUI(LensModel model)
{
this.model = model;
initComponents();
buildGUI();
}
/**
* Sets the size of the zoomWindowUI to scale with the zoomfactor.
*
* @param w width of zoomed image.
* @param h height of the zoomed image.
*/
void setZoomUISize(int w, int h)
{
Dimension d = new Dimension(w, h);
layeredPane.setPreferredSize(d);
layeredPane.setSize(d);
canvas.setSize(d);
canvas.setPreferredSize(d);
getViewport().setViewPosition(new Point(-1, -1));
canvas.repaint();
setBounds(getBounds());
}
/** Updates the background color of the view port. */
void updateBackgroundColor()
{
getViewport().setBackground(model.getBackgroundColor());
}
/**
* Sets the <code>adjusting</code> flag when the experimenter uses
* the scrollbars.
* @see MouseMotionListener#mouseDragged(MouseEvent)
*/
public void mouseDragged(MouseEvent e) { adjusting = true; }
/**
* Overridden to center the image.
* @see JComponent#setBounds(Rectangle)
*/
public void setBounds(Rectangle r)
{
setBounds(r.x, r.y, r.width, r.height);
}
/**
* Overridden to center the image.
* @see JComponent#setBounds(int, int, int, int)
*/
public void setBounds(int x, int y, int width, int height)
{
super.setBounds(x, y, width, height);
if (!scrollbarsVisible() && adjusting) adjusting = false;
if (adjusting) return;
Rectangle r = getViewport().getViewRect();
Dimension d = layeredPane.getPreferredSize();
int xLoc = ((r.width-d.width)/2);
int yLoc = ((r.height-d.height)/2);
layeredPane.setBounds(xLoc, yLoc, d.width, d.height);
}
/**
* Required by the {@link MouseMotionListener} I/F but no-op implementation
* in our case.
* @see MouseMotionListener#mouseMoved(MouseEvent)
*/
public void mouseMoved(MouseEvent e) {}
}