/*
* org.openmicroscopy.shoola.agents.imviewer.browser.ImageCanvas
*
*------------------------------------------------------------------------------
* Copyright (C) 2006-2015 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.Color;
import java.awt.FontMetrics;
import java.awt.Graphics2D;
import java.awt.Point;
import java.awt.Rectangle;
import javax.swing.JPanel;
import javax.swing.JViewport;
//Third-party libraries
//Application-internal dependencies
import org.openmicroscopy.shoola.agents.imviewer.util.ImagePaintingFactory;
/**
* Components where the image to display is painted.
*
* @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 OME3.0
*/
class ImageCanvas
extends JPanel
{
/** Indicate to display the bird eye in <code>Top left</code>.*/
static final int TOP_LEFT = 0;
/** Indicate to display the bird eye in <code>Bottom right</code>.*/
static final int BOTTOM_RIGHT = 1;
/** The background color of the text area. */
static final Color BACKGROUND = Color.BLACK;
/** Reference to the Model. */
protected BrowserModel model;
/** Reference to the Model. */
protected BrowserUI view;
/** The string to paint on top of the image. */
protected String paintedString;
/** The font's height. */
protected int height;
/**
* Creates a new instance.
*
* @param model Reference to the Model. Mustn't be <code>null</code>.
*/
ImageCanvas(BrowserModel model, BrowserUI view)
{
if (model == null) throw new NullPointerException("No model.");
if (view == null) throw new NullPointerException("No view.");
this.model = model;
this.view = view;
setBackground(model.getBackgroundColor());
setDoubleBuffered(true);
setFont(getFont().deriveFont(10f));
FontMetrics fm = getFontMetrics(getFont());
height = fm.getHeight();
paintedString = null;
}
/**
* Sets the value of the selected z-section and time-point.
*
* @param pressedZ The selected z-section.
* @param pressedT The selected time-point.
*/
void setPaintedString(int pressedZ, int pressedT)
{
if (pressedZ < 0 || pressedT < 0) paintedString = null;
else paintedString = "z="+pressedZ+", t="+pressedT;
repaint();
}
/**
* Paints the scale bar on the specified graphics context.
*
* @param g2D The graphics context.
* @param width The image's width.
* @param height The image's height.
* @param viewPort The viewport hosting the canvas.
*/
void paintScaleBar(Graphics2D g2D, int width, int height,
JViewport viewPort)
{
if (!model.isUnitBar()) return;
String value = model.getUnitBarValue();
if (value == null)
return;
value += " "+model.getUnitBarUnit();
int size = (int) (model.getUnitBarSize());
// Position scalebar in the bottom left of the viewport or
// the image which ever is viewable.
Rectangle imgRect = new Rectangle(0, 0, width, height);
Rectangle viewRect = viewPort.getBounds();
Point p = viewPort.getViewPosition();
int x = (int) p.getX();
int y = (int) p.getY();
int w = Math.min(x+viewRect.width, width);
int h = Math.min(y+viewRect.height, height);
if (imgRect.contains(viewRect)) {
w = x+viewRect.width;
h = y+viewRect.height;
}
if (imgRect.getWidth() < size)
size = 1;
if (viewRect.width >= size && size > 1) {
switch (view.getBirdEyeViewLocationIndex()) {
case ImageCanvas.BOTTOM_RIGHT:
ImagePaintingFactory.paintScaleBar(g2D, x+10, h-10,
size, value, model.getUnitBarColor());
break;
case ImageCanvas.TOP_LEFT:
default:
ImagePaintingFactory.paintScaleBar(g2D, w-size-10, h-10,
size, value, model.getUnitBarColor());
}
}
}
}