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/*
* HueSaturationValueDialog
*
* Copyright (c) 2001, 2002, 2003 Marco Schmidt.
* All rights reserved.
*/
package net.sourceforge.jiu.gui.awt.dialogs;
import java.awt.BorderLayout;
import java.awt.Button;
import java.awt.Checkbox;
import java.awt.Color;
import java.awt.Dialog;
import java.awt.Frame;
import java.awt.GridLayout;
import java.awt.Label;
import java.awt.Panel;
import java.awt.TextComponent;
import java.awt.TextField;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import net.sourceforge.jiu.apps.Strings;
/**
* A dialog to enter the parameters for an hue/saturation/value adjustment operation.
* Saturation and value are specified as percentage values between -100 and 100,
* where 0 means no change.
* Hue can be specified optionally (a Choice component must be checked so
* that the hue value will be used); it is a value between 0 and 359.
*
* @since 0.5.0
* @author Marco Schmidt
* @see net.sourceforge.jiu.color.adjustment.HueSaturationValue
*/
public class HueSaturationValueDialog extends Dialog implements
ActionListener, ItemListener, KeyListener
{
private Button ok;
private Button cancel;
private Panel colorPanel;
private TextField hue;
private TextField saturation;
private TextField value;
private Checkbox setHue;
private boolean pressedOk;
/**
* @param owner the Frame this dialog will belong to
*/
public HueSaturationValueDialog(Frame owner, Strings strings, boolean initialSetHue, int h, int s, int v)
{
super(owner, strings.get(Strings.ADJUST_HUE_SATURATION_AND_VALUE), true);
pressedOk = false;
Panel panel = new Panel();
panel.setLayout(new GridLayout(0, 2));
setHue = new Checkbox(strings.get(Strings.SET_HUE), initialSetHue);
setHue.addItemListener(this);
panel.add(setHue);
colorPanel = new Panel();
panel.add(colorPanel);
panel.add(new Label(strings.get(Strings.HUE)));
hue = new TextField(Integer.toString(h));
hue.addKeyListener(this);
panel.add(hue);
panel.add(new Label(strings.get(Strings.SATURATION)));
saturation = new TextField(Integer.toString(s));
saturation.addKeyListener(this);
panel.add(saturation);
panel.add(new Label(strings.get(Strings.VALUE)));
value = new TextField(Integer.toString(v));
value.addKeyListener(this);
panel.add(value);
add(panel, BorderLayout.CENTER);
ok = new Button(strings.get(Strings.OK));
ok.addActionListener(this);
cancel = new Button(strings.get(Strings.CANCEL));
cancel.addActionListener(this);
panel = new Panel();
panel.add(ok);
panel.add(cancel);
add(panel, BorderLayout.SOUTH);
updateTextFields();
pack();
Dialogs.center(this);
}
/**
* Hides (closes) this dialog if the OK button was source of the action event
* (e.g. if the button was pressed).
*/
public void actionPerformed(ActionEvent e)
{
if (e.getSource() == ok)
{
pressedOk = true;
setVisible(false);
}
else
if (e.getSource() == cancel)
{
setVisible(false);
}
}
public int getHue()
{
return getValue(hue);
}
public int getSaturation()
{
return getValue(saturation);
}
public int getValue()
{
return getValue(value);
}
/**
* Attempts to convert the content of the argument text component
* to an <code>int</code>; if successful, returns that int, otherwise
* -1000 is returned.
* @param textField the text component that is supposed to hold an int value
* @return int representation of the text component's data
*/
private int getValue(TextComponent textField)
{
try
{
return Integer.parseInt(textField.getText());
}
catch (NumberFormatException nfe)
{
return -1000;
}
}
public boolean hasPressedOk()
{
return pressedOk;
}
public void itemStateChanged(ItemEvent e)
{
updateTextFields();
}
public boolean isHueSet()
{
return setHue.getState();
}
/**
* Computes width and height of new image and updates the
* corresponding labels.
* The labels will either display width and height or a single
* dash if the data in the text fields is invalid.
*/
private void updateTextFields()
{
hue.setEnabled(setHue.getState());
int h = getValue(hue);
int s = getValue(saturation);
int v = getValue(value);
boolean enabled = s >= -100 && s <= 100 && v >= -100 && v <= 100;
if (setHue.getState())
{
enabled = enabled && h >= 0 && h <= 359;
}
ok.setEnabled(enabled);
Color color = new Color(Color.HSBtoRGB(h / 360f, 1.0f, 1.0f));
colorPanel.setBackground(color);
}
public void keyPressed(KeyEvent e)
{
updateTextFields();
}
public void keyReleased(KeyEvent e)
{
updateTextFields();
}
public void keyTyped(KeyEvent e)
{
updateTextFields();
}
}
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