/*
* org.openmicroscopy.shoola.util.ui.drawingtools.texttools.DrawingTextTool
*
*------------------------------------------------------------------------------
* Copyright (C) 2006-2007 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.drawingtools.texttools;
//Java imports
import java.awt.Insets;
import java.awt.Rectangle;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import java.awt.geom.Point2D;
import javax.swing.undo.AbstractUndoableEdit;
import javax.swing.undo.CannotRedoException;
import javax.swing.undo.CannotUndoException;
//Third-party libraries
import org.jhotdraw.draw.CreationTool;
import org.jhotdraw.draw.Drawing;
import org.jhotdraw.draw.DrawingEditor;
import org.jhotdraw.draw.Figure;
import org.jhotdraw.draw.TextHolderFigure;
//Application-internal dependencies
/**
* A tool to create Text figure.
*
* @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
*/
public class DrawingTextTool
extends CreationTool
implements ActionListener
{
/** The floating text field. */
protected DrawingFloatingTextField textField;
/** The figure of reference. */
protected TextHolderFigure typingTarget;
/**
* Begins the edition.
*
* @param textHolder The figure to handle.
*/
private void beginEdit(TextHolderFigure textHolder)
{
if (textField == null) {
textField = new DrawingFloatingTextField();
textField.addActionListener(this);
}
if (textHolder != typingTarget && typingTarget != null) {
endEdit();
}
textField.createOverlay(getView(), textHolder);
textField.setBounds(getFieldBounds(textHolder), textHolder.getText());
textField.requestFocus();
typingTarget = textHolder;
}
/**
* Returns the bounds of the figure.
*
* @param figure The figure to handle.
* @return See above.
*/
protected Rectangle getFieldBounds(TextHolderFigure figure)
{
Rectangle textBox = getView().drawingToView(figure.getBounds());
int h = (int) Math.min(24, textBox.getHeight());
int y = (int) textBox.getY()+(int)(textBox.getHeight()/2)-h/2;
Rectangle box = new Rectangle((int) textBox.getX(), y,
(int) textBox.getWidth(), h);
Insets insets = textField.getInsets();
return new Rectangle(
box.x - insets.left,
box.y - insets.top,
box.width + insets.left + insets.right,
box.height + insets.top + insets.bottom
);
}
/** Stops the edition. */
private void endEdit()
{
if (typingTarget == null) return;
//typingTarget.willChange();
if (textField.getText().length() > 0) {
typingTarget.setText(textField.getText());
if (createdFigure != null) {
final Figure addedFigure = createdFigure;
final Drawing addedDrawing = getDrawing();
getDrawing().fireUndoableEditHappened(new AbstractUndoableEdit() {
public String getPresentationName() {
return super.getPresentationName();
}
public void undo() throws CannotUndoException {
super.undo();
addedDrawing.remove(addedFigure);
}
public void redo() throws CannotRedoException {
super.redo();
addedDrawing.add(addedFigure);
}
});
createdFigure = null;
}
} else {
if (createdFigure != null) getDrawing().remove(getAddedFigure());
else typingTarget.setText("");
}
// nothing to undo
// setUndoActivity(null);
//typingTarget.changed();
typingTarget = null;
textField.endOverlay();
}
/**
* Creates a new instance.
*
* @param prototype The figure.
*/
public DrawingTextTool(TextHolderFigure prototype)
{
super(prototype);
}
/**
* Overridden to check if we can edit the figure.
* If the pressed figure is a TextHolderFigure it can be edited otherwise
* a new text figure is created.
* @see CreationTool#mousePressed(MouseEvent)
*/
public void mousePressed(MouseEvent e)
{
TextHolderFigure textHolder = null;
Point2D.Double p = getView().viewToDrawing(e.getPoint());
Figure pressedFigure = getDrawing().findFigureInside(p);
if (pressedFigure instanceof TextHolderFigure) {
textHolder = ((TextHolderFigure) pressedFigure).getLabelFor();
if (!textHolder.isEditable())
textHolder = null;
}
if (textHolder != null) {
beginEdit(textHolder);
return;
}
if (typingTarget != null) {
endEdit();
fireToolDone();
} else {
super.mousePressed(e);
// update view so the created figure is drawn before the
// floating text figure is overlaid. (Note, Damage should be null in
//StandardDrawingView when the overlay figure is drawn because a
//JTextField cannot be scrolled)
//view().checkDamage();
textHolder = (TextHolderFigure) getCreatedFigure();
beginEdit(textHolder);
}
}
/**
* Overridden to end the edition.
* @see CreationTool#deactivate(DrawingEditor)
*/
public void deactivate(DrawingEditor editor)
{
endEdit();
super.deactivate(editor);
}
/**
* Ends the edition.
* @see ActionListener#actionPerformed(ActionEvent)
*/
public void actionPerformed(ActionEvent event)
{
endEdit();
fireToolDone();
}
}