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

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Here is the source code for it.uniba.di.cdg.econference.planningpoker.ui.CardTarget.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.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;

public class CardTarget extends Canvas {
    private String estimate = "";

    public CardTarget(Composite parent) {
        super(parent, SWT.NONE);

        this.addPaintListener(new PaintListener() {
            public void paintControl(PaintEvent e) {
                if (isEnabled()) {
                    if (estimate.isEmpty()) {
                        Font font = new Font(e.display, "Arial", 10, SWT.NONE);
                        e.gc.setFont(font);
                        e.gc.setForeground(e.display.getSystemColor(SWT.COLOR_DARK_GRAY));

                        String text = "Drag";
                        Point textSize = e.gc.textExtent(text);
                        e.gc.drawText(text, (e.width - textSize.x) / 2, (e.height - textSize.y) / 2 - 20, true);

                        text = "your card";
                        textSize = e.gc.textExtent(text);
                        e.gc.drawText(text, (e.width - textSize.x) / 2, (e.height - textSize.y) / 2, true);

                        text = "here";
                        textSize = e.gc.textExtent(text);
                        e.gc.drawText(text, (e.width - textSize.x) / 2, (e.height - textSize.y) / 2 + 20, true);

                        // Dotted rectangle containing the card
                        e.gc.setLineWidth(2);
                        e.gc.setLineStyle(SWT.LINE_DASH);
                        e.gc.setForeground(e.display.getSystemColor(SWT.COLOR_RED));
                        e.gc.drawRoundRectangle(3, 3, e.width - 6, e.height - 6, 10, 10);

                        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_RED));
                        e.gc.drawRoundRectangle(3, 3, e.width - 6, e.height - 6, 10, 10);

                        // Card background pattern
                        Image image = ImageDescriptor.createFromFile(getClass(), CardButton.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(estimate);
                        e.gc.setForeground(e.display.getSystemColor(SWT.COLOR_BLACK));
                        e.gc.drawText(estimate, (e.width - textSize.x) / 2, (e.height - textSize.y) / 2, true);

                        font.dispose();
                        image.dispose();
                        pattern.dispose();
                    }
                } else {
                    Font font = new Font(e.display, "Arial", 10, SWT.NONE);
                    e.gc.setFont(font);
                    e.gc.setForeground(e.display.getSystemColor(SWT.COLOR_DARK_GRAY));

                    String text = "You";
                    Point textSize = e.gc.textExtent(text);
                    e.gc.drawText(text, (e.width - textSize.x) / 2, (e.height - textSize.y) / 2 - 20, true);

                    text = "can't";
                    textSize = e.gc.textExtent(text);
                    e.gc.drawText(text, (e.width - textSize.x) / 2, (e.height - textSize.y) / 2, true);

                    text = "vote";
                    textSize = e.gc.textExtent(text);
                    e.gc.drawText(text, (e.width - textSize.x) / 2, (e.height - textSize.y) / 2 + 20, true);

                    // Dotted rectangle containing the card
                    e.gc.setLineWidth(2);
                    e.gc.setLineStyle(SWT.LINE_DASH);
                    e.gc.setForeground(e.display.getSystemColor(SWT.COLOR_RED));
                    e.gc.drawRoundRectangle(3, 3, e.width - 6, e.height - 6, 10, 10);

                    font.dispose();
                }

            }
        });
    }

    public void setEstimate(String estimate) {
        this.estimate = estimate;
        redraw();
    }

    public void setEnabled(boolean enabled) {
        super.setEnabled(enabled);
        redraw();
    }

}