/*
* org.openmicroscopy.shoola.agents.imviewer.browser.ProjectionUI
*
*------------------------------------------------------------------------------
* Copyright (C) 2006-2009 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.agents.imviewer.browser;
//Java imports
import java.awt.Dimension;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.image.BufferedImage;
import javax.swing.JComponent;
import javax.swing.JLayeredPane;
import javax.swing.JScrollBar;
import javax.swing.JScrollPane;
/**
* Hosts the UI components displaying the projected image.
* Note that the layout manager of the viewport is set to <code>null</code>.
*
* @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 3.0-Beta4
*/
class ProjectionUI
extends JScrollPane
{
/** The canvas hosting the projected image. */
private JComponent canvas;
/** Reference to the model. */
private BrowserModel model;
/** Reference to the view. */
private BrowserUI view;
/** The UI component hosting the {@link ProjectionCanvas}. */
private JLayeredPane layeredPane;
/** Flag indicating if the experimenter uses the scrollbars. */
private boolean adjusting;
/** Initializes the components composing the display. */
private void initComponents()
{
layeredPane = new JLayeredPane();
canvas = new ProjectionBICanvas(model, view, this);
//The image canvas is always at the bottom of the pile.
//layeredPane.setLayout(new BorderLayout(0, 0));
layeredPane.add(canvas, Integer.valueOf(0));
}
/** Builds and lays out the GUI. */
private void buildGUI()
{
getViewport().setLayout(null);
getViewport().setBackground(model.getBackgroundColor());
getViewport().add(layeredPane);
}
/** Centers the image.*/
private void center()
{
Rectangle r = getViewport().getViewRect();
Dimension d = layeredPane.getPreferredSize();
int xLoc = ((r.width-d.width)/2);
int yLoc = ((r.height-d.height)/2);
JScrollBar hBar = getHorizontalScrollBar();
JScrollBar vBar = getVerticalScrollBar();
if (hBar.isVisible()) xLoc = layeredPane.getX();
if (vBar.isVisible()) yLoc = layeredPane.getY();
layeredPane.setBounds(xLoc, yLoc, d.width, d.height);
}
/**
* 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();
return (hBar.isVisible() || vBar.isVisible());
}
/** Creates a new instance. */
ProjectionUI() {}
/**
* Links the components.
*
* @param model Reference to the model. Mustn't be <code>null</code>.
* @param view Reference to the view. Mustn't be <code>null</code>.
*/
void initialize(BrowserModel model, BrowserUI view)
{
if (model == null) throw new NullPointerException("No model.");
this.model = model;
this.view = view;
initComponents();
buildGUI();
}
/**
* Returns the current size of the viewport.
*
* @return see above.
*/
Dimension getViewportSize() { return getViewport().getSize(); }
/** Displays the zoomed image.
*
* @param resetLocation Pass <code>true</code> to reset the viewport location,
* <code>false</code> otherwise.
*/
void zoomImage(boolean resetLocation)
{
int w, h;
if (model.getProjectedImage() == null) {
double f = model.getZoomFactor();
w = (int) (model.getMaxX()*f);
h = (int) (model.getMaxY()*f);
} else {
model.createDisplayedProjectedImage();
BufferedImage img = model.getDisplayedProjectedImage();
if (img == null) {
double f = model.getZoomFactor();
w = (int) (model.getMaxX()*f);
h = (int) (model.getMaxY()*f);
} else {
w = img.getWidth();
h = img.getHeight();
}
}
setComponentsSize(w, h);
if (resetLocation)
getViewport().setViewPosition(new Point(-1, -1));
canvas.repaint();
setBounds(getBounds());
}
/**
* Sets the size of the components because a layeredPane doesn't have a
* layout manager.
*
* @param w The width to set.
* @param h The height to set.
*/
void setComponentsSize(int w, int h)
{
Dimension d = new Dimension(w, h);
layeredPane.setPreferredSize(d);
layeredPane.setSize(d);
canvas.setPreferredSize(d);
canvas.setSize(d);
repaint();
}
/**
* Adds the component to the {@link #layeredPane}. The component will
* be added to the top of the pile
*
* @param c The component to add.
*/
void addComponentToLayer(JComponent c)
{
layeredPane.add(c, Integer.valueOf(1));
}
/**
* Removes the component from the {@link #layeredPane}.
*
* @param c The component to remove.
*/
void removeComponentFromLayer(JComponent c)
{
layeredPane.remove(c);
}
/**
* 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);
Rectangle r = getViewport().getViewRect();
Dimension d = layeredPane.getPreferredSize();
if (model.isBigImage()) {
if (!(d.width < r.width && d.height < r.height))
return;
}
if (!scrollbarsVisible() && adjusting) adjusting = false;
JScrollBar hBar = getHorizontalScrollBar();
JScrollBar vBar = getVerticalScrollBar();
if (!(hBar.isVisible() && vBar.isVisible())) center();
}
}