it.uniba.di.cdg.econference.planningpoker.ui.CardButton.java Source code

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Here is the source code for it.uniba.di.cdg.econference.planningpoker.ui.CardButton.java

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/**
 * This file is part of the eConference project and it is distributed under the 
    
 * terms of the MIT Open Source license.
 * 
 * The MIT License
 * Copyright (c) 2005 Collaborative Development Group - Dipartimento di Informatica, 
 *                    University of Bari, http://cdg.di.uniba.it
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this 
 * software and associated documentation files (the "Software"), to deal in the Software 
 * without restriction, including without limitation the rights to use, copy, modify, 
 * merge, publish, distribute, sublicense, and/or sell copies of the Software, and to 
 * permit persons to whom the Software is furnished to do so, subject to the following 
 * conditions:
 * 
 * The above copyright notice and this permission notice shall be included in all copies 
 * or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
 * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A 
 * PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT 
 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF 
 * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE 
 * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
package it.uniba.di.cdg.econference.planningpoker.ui;

import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.events.MouseListener;
import org.eclipse.swt.events.MouseTrackListener;
import org.eclipse.swt.events.PaintEvent;
import org.eclipse.swt.events.PaintListener;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.Pattern;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.widgets.Canvas;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Label;

public class CardButton extends Canvas {
    public static String CARD_BACKGROUND_IMAGE = "/icons/deck/card.png";

    private int mouse = 0;
    private Boolean selected = false;
    private String value = "?";
    private Label label;

    public CardButton(Composite parent, final String value) {
        super(parent, SWT.NONE);
        this.value = value;

        this.addPaintListener(new PaintListener() {
            public void paintControl(PaintEvent e) {
                if (!selected) {
                    // Dotted rectangle containing the card
                    e.gc.setLineWidth(2);
                    e.gc.setLineStyle(SWT.LINE_DASH);
                    e.gc.setForeground(e.display.getSystemColor(SWT.COLOR_GRAY));
                    e.gc.drawRoundRectangle(3, 3, e.width - 6, e.height - 6, 10, 10);

                    // Card background pattern
                    Image image = ImageDescriptor.createFromFile(getClass(), CARD_BACKGROUND_IMAGE).createImage();
                    Pattern pattern = new Pattern(e.display, image);
                    e.gc.setBackgroundPattern(pattern);
                    e.gc.fillRectangle(8, 8, e.width - 16, e.height - 16);

                    // Card border
                    e.gc.setLineWidth(2);
                    e.gc.setLineStyle(SWT.LINE_SOLID);
                    e.gc.setForeground(e.display.getSystemColor(SWT.COLOR_WHITE));
                    e.gc.drawRoundRectangle(7, 7, e.width - 14, e.height - 14, 5, 5);

                    // Card value
                    Font font = new Font(e.display, "Arial", 12, SWT.BOLD);
                    e.gc.setFont(font);

                    Point textSize = e.gc.textExtent(value);
                    e.gc.setForeground(e.display.getSystemColor(SWT.COLOR_BLACK));
                    e.gc.drawText(value, (e.width - textSize.x) / 2, (e.height - textSize.y) / 2, true);

                    /*
                     * Switch
                     * 
                     * 0: Default state
                     * 1: Mouse over
                     * 2: Mouse down
                     * */
                    switch (mouse) {
                    case 0:
                    case 1:
                    case 2:
                        break;
                    }

                    image.dispose();
                    pattern.dispose();
                    font.dispose();
                } else {
                    // Dotted rectangle containing the card
                    e.gc.setLineWidth(2);
                    e.gc.setLineStyle(SWT.LINE_DASH);
                    e.gc.setForeground(e.display.getSystemColor(SWT.COLOR_GRAY));
                    e.gc.drawRoundRectangle(3, 3, e.width - 6, e.height - 6, 10, 10);
                }
            }
        });

        this.addMouseTrackListener(new MouseTrackListener() {

            @Override
            public void mouseHover(MouseEvent e) {
                // TODO Auto-generated method stub
            }

            @Override
            public void mouseExit(MouseEvent e) {
                mouse = 0;
                redraw();
            }

            @Override
            public void mouseEnter(MouseEvent e) {
                mouse = 1;
                redraw();
            }
        });

        this.addMouseListener(new MouseListener() {

            @Override
            public void mouseUp(MouseEvent e) {
                mouse = 1;
                if (e.x < 0 || e.y < 0 || e.x > getBounds().width || e.y > getBounds().height) {
                    mouse = 0;
                }
                redraw();
                if (mouse == 1)
                    notifyListeners(SWT.Selection, new Event());
            }

            @Override
            public void mouseDown(MouseEvent e) {
                mouse = 2;
                redraw();
            }

            @Override
            public void mouseDoubleClick(MouseEvent e) {
                // TODO Auto-generated method stub
            }
        });
    }

    public String getValue() {
        return value;
    }

    public void setValue(String value) {
        this.value = value;
        redraw();
    }

    public Label getLabel() {
        return label;
    }

    public Boolean getSelected() {
        return selected;
    }

    public void setSelected(Boolean selected) {
        this.selected = selected;
        redraw();
    }

}