/* Copyright (c) 2014 Jesper Öqvist <jesper@llbit.se>
*
* This file is part of Chunky.
*
* Chunky 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 3 of the License, or
* (at your option) any later version.
*
* Chunky 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 Chunky. If not, see <http://www.gnu.org/licenses/>.
*/
package se.llbit.chunky.ui;
import java.awt.Color;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.Point;
import java.awt.event.ComponentAdapter;
import java.awt.event.ComponentEvent;
import java.awt.event.ComponentListener;
import javax.swing.JComponent;
import javax.swing.JLabel;
import javax.swing.JLayeredPane;
import javax.swing.JPanel;
import javax.swing.JRootPane;
import javax.swing.JTabbedPane;
import javax.swing.SwingUtilities;
import javax.swing.event.AncestorEvent;
import javax.swing.event.AncestorListener;
/**
* Label for showing currently hovered chunk and biome information
* in the 2D map.
* @author Jesper Öqvist <jesper@llbit.se>
*/
@SuppressWarnings("serial")
public class OverlayLabel extends JPanel {
private final JComponent parentComponent;
private final JLabel lbl = new JLabel();
private JLayeredPane layeredPane;
private final Color errBGColor = new Color(0xfff5bc);
private boolean showLabel = false;
public OverlayLabel(JComponent parent) {
this.add(lbl);
setOpaque(true);
setBackground(errBGColor);
this.parentComponent = parent;
attachTooltip();
setVisible(false);
}
private void attachTooltip() {
JRootPane rootPane = parentComponent.getRootPane();
if (rootPane == null) {
parentComponent.addAncestorListener(new AncestorListener() {
@Override
public void ancestorRemoved(AncestorEvent event) {
}
@Override
public void ancestorMoved(AncestorEvent event) {
}
@Override
public void ancestorAdded(AncestorEvent event) {
attachTooltip();
parentComponent.removeAncestorListener(this);
}
});
} else {
parentComponent.addComponentListener(new ComponentListener() {
@Override
public void componentShown(ComponentEvent e) {
}
@Override
public void componentResized(ComponentEvent e) {
updatePosition();
}
@Override
public void componentMoved(ComponentEvent e) {
updatePosition();
}
@Override
public void componentHidden(ComponentEvent e) {
}
});
layeredPane = rootPane.getLayeredPane();
layeredPane.setLayer(this, JLayeredPane.POPUP_LAYER);
layeredPane.add(this);
Container container = parentComponent;
while (container != null) {
if (container.getParent() instanceof JTabbedPane) {
container.addComponentListener(new ComponentAdapter() {
@Override
public void componentHidden(ComponentEvent e) {
ancestorComponentHidden();
}
@Override
public void componentShown(ComponentEvent e) {
ancestorComponentShown();
}
});
}
container = container.getParent();
}
updatePosition();
}
}
private void updatePosition() {
Dimension parentSize = parentComponent.getSize();
Dimension size = getPreferredSize();
Point loc = SwingUtilities.convertPoint(parentComponent,
getLocation(), this);
int x = loc.x;
int y = loc.y+parentSize.height-size.height;
setBounds(x, y, size.width, size.height);
super.setVisible(showLabel);
}
public void setText(String message) {
lbl.setText(message);
showLabel = true;
if (layeredPane != null) {
updatePosition();
}
}
protected void ancestorComponentHidden() {
super.setVisible(false);
}
protected void ancestorComponentShown() {
updatePosition();
}
@Override
public void setVisible(boolean aFlag) {
super.setVisible(aFlag);
showLabel = aFlag;
}
}