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/*
* Copyright 2002-2016 Jalal Kiswani.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.fs.commons.desktop.swing.dialogs;
import java.awt.AWTEvent;
import java.awt.Color;
import java.awt.Container;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Paint;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import javax.swing.BorderFactory;
import javax.swing.ImageIcon;
import javax.swing.JComponent;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JLayer;
import javax.swing.JPanel;
import javax.swing.Timer;
import javax.swing.plaf.LayerUI;
public class DialogUtils {
private static class DialogBackPanel extends JPanel {
/**
*
*/
private static final long serialVersionUID = 4661510795553055144L;
private static final Paint fill = new Color(0xAAFFFFFF, true);
private static final ImageIcon shadowImage = new ImageIcon(DialogUtils.class.getResource("dialogShadow.png"));
private final JComponent cmp;
private final JLabel title = new JLabel();
private final JLabel info = new JLabel("Hit 'ESC' to close the dialog");
public DialogBackPanel(final JDialog dialog) {
this.cmp = (JComponent) dialog.getContentPane();
setOpaque(false);
setLayout(null);
add(this.cmp);
add(this.title);
add(this.info);
this.cmp.setBorder(BorderFactory.createLineBorder(Color.WHITE, 5));
this.title.setFont(new Font("SquareFont", Font.PLAIN, 26));
this.title.setForeground(Color.WHITE);
this.info.setForeground(Color.WHITE);
this.title.setText(dialog.getTitle());
this.title.setSize(this.title.getPreferredSize());
this.info.setSize(this.info.getPreferredSize());
this.cmp.setSize(this.cmp.getPreferredSize());
}
@Override
protected void paintComponent(final Graphics g) {
super.paintComponent(g);
final int w = getWidth();
final int h = getHeight();
final int shadowX = w / 2 - (this.cmp.getWidth() + 100) / 2;
final int shadowY = h / 2 - (this.cmp.getHeight() + 100) / 2;
this.cmp.setLocation(w / 2 - this.cmp.getWidth() / 2, h / 2 - this.cmp.getHeight() / 2);
this.title.setLocation(w / 2 - this.cmp.getWidth() / 2, h / 2 - this.cmp.getHeight() / 2 - this.title.getHeight());
this.info.setLocation(w / 2 + this.cmp.getWidth() / 2 - this.info.getWidth(), h / 2 - this.cmp.getHeight() / 2 - this.info.getHeight());
final Graphics2D gg = (Graphics2D) g.create();
gg.setPaint(fill);
gg.fillRect(0, 0, w, h);
gg.drawImage(shadowImage.getImage(), shadowX, shadowY, this.cmp.getWidth() + 100, this.cmp.getHeight() + 100, null);
gg.dispose();
}
}
/**
* Adds a glass layer to the dialog to intercept all key events. If the
* espace key is pressed, the dialog is disposed (either with a fadeout
* animation, or directly).
*/
public static void addEscapeToCloseSupport(final JDialog dialog, final boolean fadeOnClose) {
final LayerUI layerUI = new LayerUI() {
/**
*
*/
private static final long serialVersionUID = -7197890707453641705L;
private boolean closing = false;
@Override
public void eventDispatched(final AWTEvent e, final JLayer l) {
if (e instanceof KeyEvent && ((KeyEvent) e).getKeyCode() == KeyEvent.VK_ESCAPE) {
if (this.closing) {
return;
}
this.closing = true;
if (fadeOnClose) {
fadeOut(dialog);
} else {
dialog.dispose();
}
}
}
@Override
public void installUI(final JComponent c) {
super.installUI(c);
((JLayer) c).setLayerEventMask(AWTEvent.KEY_EVENT_MASK);
}
@Override
public void uninstallUI(final JComponent c) {
super.uninstallUI(c);
((JLayer) c).setLayerEventMask(0);
}
};
final JLayer layer = new JLayer<>(dialog.getContentPane(), layerUI);
dialog.setContentPane(layer);
}
/**
* Centers the dialog over the given parent component. Also, creates a
* semi-transparent panel behind the dialog to mask the parent content. The
* title of the dialog is displayed in a custom fashion over the dialog
* panel, and a rectangular shadow is placed behind the dialog.
*/
public static void createDialogBackPanel(final JDialog dialog, final Container parent) {
final DialogBackPanel newContentPane = new DialogBackPanel(dialog);
dialog.setContentPane(newContentPane);
dialog.setSize(parent.getSize());
if (parent != null && parent instanceof JFrame) {
final JFrame frm = (JFrame) parent;
dialog.setLocation(frm.getContentPane().getLocationOnScreen());
}
}
/**
* Creates an animation to fade the dialog opacity from 0 to 1.
*/
public static void fadeIn(final JDialog dialog) {
final Timer timer = new Timer(10, null);
timer.setRepeats(true);
timer.addActionListener(new ActionListener() {
private float opacity = 0;
@Override
public void actionPerformed(final ActionEvent e) {
this.opacity += 0.15f;
dialog.setOpacity(Math.min(this.opacity, 1));
if (this.opacity >= 1) {
timer.stop();
}
}
});
dialog.setOpacity(0);
timer.start();
dialog.setVisible(true);
}
// -------------------------------------------------------------------------
// Helpers
// -------------------------------------------------------------------------
/**
* Creates an animation to fade the dialog opacity from 1 to 0.
*/
public static void fadeOut(final JDialog dialog) {
final Timer timer = new Timer(10, null);
timer.setRepeats(true);
timer.addActionListener(new ActionListener() {
private float opacity = 1;
@Override
public void actionPerformed(final ActionEvent e) {
this.opacity -= 0.15f;
dialog.setOpacity(Math.max(this.opacity, 0));
if (this.opacity <= 0) {
timer.stop();
dialog.dispose();
}
}
});
dialog.setOpacity(1);
timer.start();
}
}
