JTaskPane
28/01/2009
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Cursor;
import java.awt.Dimension;
import java.awt.GradientPaint;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Insets;
import java.awt.Paint;
import java.awt.RenderingHints;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.geom.Rectangle2D;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;
import javax.swing.border.LineBorder;
/**
* This is a J2LProd's JTaskPane like component <a href="http://www.L2FProd.com" onclick="javascript:pageTracker._trackPageview ('/outbound/www.L2FProd.com');">see L2FProd</a>.
* Building task oriented applications
* Lot of recent applications bring contextual item lists from which you can pick tasks related to
* the current selection or context.
* The JTaskPane <!--and JTaskPaneGroup--> deliver this feature to java applications.
*
* @author Gabriel Dromard
*/
public class JTaskPane extends JPanel {
protected static int BUTTON_WIDTH = 18;
protected Color borderColor = Color.GRAY;
protected Color buttonBorderColor = Color.DARK_GRAY.brighter();
protected Color titleGradientBeginColor = Color.WHITE;
protected Color titleGradientEndColor = Color.LIGHT_GRAY;
protected JPanel content;
protected MyJLabel label;
public JTaskPane(final String title, final JComponent component) {
super(new BorderLayout());
this.setOpaque(false);
// Title
label = new MyJLabel(title);
label.setBorder(BorderFactory.createLineBorder(borderColor));
add(label, BorderLayout.NORTH);
// Content Panel
content = new JPanel(new BorderLayout()) {
public void paintComponent(Graphics g) {
super.paintComponent(g);
g.setColor(borderColor);
g.drawRect(0, -1, getWidth()-1, getHeight());
}
};
content.setBorder(new LineBorder(borderColor) {
public Insets getBorderInsets(Component c) {
Insets insets = super.getBorderInsets(c);
insets.top = insets.top-1;
return insets;
}
});
content.add(component, BorderLayout.CENTER);
add(content, BorderLayout.CENTER);
// Hide/show content
label.setButtonActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
content.setVisible(!content.isVisible());
}
});
}
public void paintComponent(final Graphics g) {
// Set the background color of the content panel
content.setBackground(JTaskPane.this.getBackground());
super.paintComponent(g);
}
/**
* Set the JTaskPane opened or closed
*/
public void setOpened(boolean opened)
{
label.button.up = opened;
content.setVisible(opened);
}
/**
* Is the JTaskPane opened ?
* @return True if it is opened
*/
public boolean isOpened()
{
return content.isVisible();
}
/**
* @return the titleGradientBeginColor
*/
public Color getTitleGradientBeginColor() {
return titleGradientBeginColor;
}
/**
* @param titleGradientBeginColor the titleGradientBeginColor to set
*/
public void setTitleGradientBeginColor(Color titleGradientBeginColor) {
this.titleGradientBeginColor = titleGradientBeginColor;
}
/**
* @return the titleGradientEndColor
*/
public Color getTitleGradientEndColor() {
return titleGradientEndColor;
}
/**
* @param titleGradientEndColor the titleGradientEndColor to set
*/
public void setTitleGradientEndColor(Color titleGradientEndColor) {
this.titleGradientEndColor = titleGradientEndColor;
}
/**
* Title of JTaskPane
*/
class MyJLabel extends JLabel {
protected MyJButton button;
protected ActionListener currentActionListener;
public MyJLabel(final String title) {
super(" "+title);
setPreferredSize(new Dimension(getWidth(), 30));
button = new MyJButton();
int yPos = (getHeight() - BUTTON_WIDTH)/2;
int xPos = getWidth() - yPos - BUTTON_WIDTH;
button.setBounds(xPos, yPos, BUTTON_WIDTH, BUTTON_WIDTH);
add(button);
}
public void setButtonActionListener(final ActionListener action) {
// Remove action listeners
button.removeActionListener(currentActionListener);
button.addActionListener(action);
currentActionListener = action;
}
public void paintComponent(final Graphics g) {
// Re set position of button
int yPos = (getHeight() - BUTTON_WIDTH)/2;
int xPos = getWidth() - yPos - BUTTON_WIDTH;
button.setBounds(xPos, yPos, BUTTON_WIDTH, BUTTON_WIDTH);
Graphics2D g2 = (Graphics2D)g;
g2.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING , RenderingHints.VALUE_ANTIALIAS_ON);
g2.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS, RenderingHints.VALUE_FRACTIONALMETRICS_ON);
Paint oldPainter = g2.getPaint();
g2.setPaint(new GradientPaint(0, 0, titleGradientBeginColor, (float)getSize().getWidth(), (float)getSize().getHeight(), titleGradientEndColor));
//g2.fill(new RoundRectangle2D.Double(0, 0, (double)getWidth(), (double)getHeight(), 12, 12));
g2.fill(new Rectangle2D.Double(0, 0, getWidth(), getHeight()));
g2.setPaint(oldPainter);
super.paintComponent(g);
}
}
/**
* Button on left of JTaskPane title
*/
class MyJButton extends JButton {
protected boolean up = true;
public MyJButton() {
super();
setOpaque(false);
setBorderPainted(false);
setFocusPainted(false);
setContentAreaFilled(false);
setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
up = !up;
}
});
}
public void paintComponent(final Graphics g) {
Graphics2D g2 = (Graphics2D)g;
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
g2.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
g2.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS, RenderingHints.VALUE_FRACTIONALMETRICS_ON);
Paint oldPainter = g2.getPaint();
g2.setPaint(new GradientPaint(0, 0, titleGradientEndColor.brighter(), getWidth()/2, getHeight()/2, titleGradientEndColor, true));
g2.fillOval(0, 0, getWidth()-1, getHeight()-1);
g2.setColor(buttonBorderColor);
g2.drawOval(0, 0, getWidth()-1, getHeight()-1);
g2.setColor(Color.DARK_GRAY);
if(up) paintUpArrows(g2);
else paintDownArrows(g2);
g2.setPaint(oldPainter);
}
public void paintUpArrows(Graphics2D g2) {
g2.translate(0, -1);
g2.drawLine(5, getHeight()/2, getWidth()/2, 5);
g2.drawLine(6, getHeight()/2, getWidth()/2, 6);
g2.drawLine(getWidth()/2, 5, getWidth() - 5, getHeight()/2);
g2.drawLine(getWidth()/2, 6, getWidth() - 6, getHeight()/2);
g2.translate(0, +1);
g2.translate(0, getHeight()/4-1);
g2.drawLine(5, getHeight()/2, getWidth()/2, 5);
g2.drawLine(6, getHeight()/2, getWidth()/2, 6);
g2.drawLine(getWidth()/2, 5, getWidth() - 5, getHeight()/2);
g2.drawLine(getWidth()/2, 6, getWidth() - 6, getHeight()/2);
g2.translate(0, -getHeight()/4+1);
}
public void paintDownArrows(Graphics2D g2) {
g2.drawLine(5, getHeight()/2, getWidth()/2, getHeight() - 5);
g2.drawLine(6, getHeight()/2, getWidth()/2, getHeight() - 6);
g2.drawLine(getWidth()/2, getHeight() - 5, getWidth() - 5, getHeight()/2);
g2.drawLine(getWidth()/2, getHeight() - 6, getWidth() - 6, getHeight()/2);
g2.translate(0, -getHeight()/4);
g2.drawLine(5, getHeight()/2, getWidth()/2, getHeight() - 5);
g2.drawLine(6, getHeight()/2, getWidth()/2, getHeight() - 6);
g2.drawLine(getWidth()/2, getHeight() - 5, getWidth() - 5, getHeight()/2);
g2.drawLine(getWidth()/2, getHeight() - 6, getWidth() - 6, getHeight()/2);
g2.translate(0, +getHeight()/4);
}
}
/**
* Demo main methods that display JTaskPane, JForm, ShadowBorder
*/
public static void main(String[] args) {
//
JForm root = new JForm(10, 10);
root.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
//root.setBackground(Color.WHITE);
// Initialize JForm
JForm form1 = new JForm(5, 5);
form1.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
form1.setBackground(Color.WHITE);
//form.setOpaque(false);
for(int i=0; i<10; ++i) {
JTextField txt = new JTextField();
txt.setPreferredSize(new Dimension(150, (int)txt.getPreferredSize().getHeight()));
if(i == 3) form1.addLine(new JLabel("label plus long"+i), txt, new JButton("Select"+i));
else form1.addLine(new JLabel("label"+i), txt, new JButton("Select"+i));
}
JForm form2 = new JForm(5, 5);
form2.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
form2.setBackground(Color.WHITE);
for(int i=0; i<5; ++i) {
JTextField txt = new JTextField();
txt.setPreferredSize(new Dimension(150, (int)txt.getPreferredSize().getHeight()));
if(i >= 3) form2.addLine(new JLabel("label plus long"+i), txt, null);
else form2.addLine(new JLabel("label"+i), txt, new JButton("Select"+i));
}
// Add form in panel
JPanel myPanel1 = new JTaskPane("JTaskPane containing a JForm", form1);
ShadowBorder shadowBorder = new ShadowBorder(Color.GRAY);
myPanel1.setBorder(shadowBorder);
// Add form in panel
JTaskPane myPanel2 = new JTaskPane("Same with different options", form2);
myPanel2.titleGradientBeginColor = Color.LIGHT_GRAY;
myPanel2.titleGradientEndColor = Color.WHITE;
shadowBorder = new ShadowBorder(Color.GRAY);
shadowBorder.setType(ShadowBorder.TOP_LEFT);
myPanel2.setBorder(shadowBorder);
//myPanel.setBackground(Color.WHITE);
root.addLine(null, myPanel1, null);
root.addLine(null, myPanel2, null);
JMemoryMonitor mem = new JMemoryMonitor();
mem.setPreferredSize(new Dimension(200, 200));
root.addLine(null, mem, null);
// Show frame
JFrame frame = SwingHelper.openInFrame(root);
frame.setSize(frame.getWidth()+300, frame.getHeight());
myPanel2.setOpened(false);
SwingUtilities.updateComponentTreeUI(frame);
}
}
