javaswingawtnimbus
How to achieve shadow effect using GradientPaint in Java swing?
I want to achieve this type of text fields in my project
I wrote a painter class to set background for my text fields.
This is my Main class in which i set Nimbus as Look and feel :
import java.awt.FlowLayout;
import javax.swing.JFrame;
import javax.swing.JTextField;
import javax.swing.UIManager;
class NimbusBaseDemo extends JFrame {
/**
*
*/
private static final long serialVersionUID = 1L;
JTextField jtxt, txtDisEnabled;
int i;
private UIManager.LookAndFeelInfo[] lafs;
public NimbusBaseDemo() {
try {
// Set nimbus look and feel. nimbusBase works only for it.
new NimbusBaseUI();
} catch (Exception e) {
e.printStackTrace();
}
setTitle("Nimbus Base Demo");
setSize(400, 400);
setLayout(new FlowLayout());
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setVisible(true);
jtxt = new JTextField();
jtxt = new JTextField("Enabled Text Field");
jtxt.setEnabled(true);
add(jtxt);
// Disabled text field
txtDisEnabled = new JTextField("Disabled Text Field");
txtDisEnabled.setEnabled(false);
add(txtDisEnabled);
}
public static void main(String args[]) {
new NimbusBaseDemo();
}
}
and this is my nimbus theme class, here i extend NimbusLookAndFell class and setdefaults as i want.
import javax.swing.UIManager;
import javax.swing.plaf.nimbus.NimbusLookAndFeel;
public class NimbusBaseUI extends NimbusLookAndFeel {
public NimbusBaseUI() {
super(); // Initialisation and installating
try {
new TextFieldTheme(this);
UIManager.setLookAndFeel(this);
} catch (Exception e) {
e.printStackTrace();
}
}
@Override
public void initialize() {
// TODO Auto-generated method stub
super.initialize();
}
}
And this is my Text field theme class, which i used in NimbusBaseUI class
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.GradientPaint;
import java.awt.Graphics2D;
import java.awt.Insets;
import java.awt.RenderingHints;
import javax.swing.Painter;
public class TextFieldTheme {
public TextFieldTheme(NimbusBaseUI nimbusUI) {
nimbusUI.getDefaults().put("TextField.opaque", false);
nimbusUI.getDefaults().put("TextField.font",
new Font("Myriad Pro Light", Font.PLAIN, 13));
nimbusUI.getDefaults().put("TextField[Enabled].textForeground",
new Color(0, 0, 0));
nimbusUI.getDefaults().put("TextField.contentMargins",
new Insets(2, 10, 2, 2));
nimbusUI.getDefaults().put("TextField[Enabled].contentMargins",
new Insets(2, 10, 2, 2));
nimbusUI.getDefaults().put("TextField[Disabled].contentMargins",
new Insets(2, 10, 2, 2));
nimbusUI.getDefaults().put(
"TextField[Enabled].backgroundPainter",
new TextFeildPaintBorder(new Color(0, 0, 255), new Color(255,
255, 255)));
nimbusUI.getDefaults().put(
"TextField[Focused].backgroundPainter",
new TextFeildPaintBorder(new Color(0, 0, 255), new Color(255,
255, 255)));
nimbusUI.getDefaults().put(
"TextField[Selected].backgroundPainter",
new TextFeildPaintBorder(new Color(0, 0, 255), new Color(255,
255, 255)));
nimbusUI.getDefaults().put(
"TextField[MouseOver].backgroundPainter",
new TextFeildPaintBorder(new Color(0, 0, 255), new Color(255,
255, 255)));
nimbusUI.getDefaults().put(
"TextField[Enabled+Focused].backgroundPainter",
new TextFeildPaintBorder(new Color(0, 0, 255), new Color(255,
255, 255)));
nimbusUI.getDefaults().put(
"TextField[Enabled+Selected].backgroundPainter",
new TextFeildPaintBorder(new Color(0, 0, 255), new Color(255,
255, 255)));
nimbusUI.getDefaults().put(
"TextField[Enabled+MouseOver].backgroundPainter",
new TextFeildPaintBorder(new Color(0, 0, 255), new Color(255,
255, 255)));
nimbusUI.getDefaults().put("TextField[Disabled].textForeground",
new Color(0, 0, 0));
nimbusUI.getDefaults().put(
"TextField[Disabled].backgroundPainter",
new TextFeildPaintBorder(new Color(255, 255, 255), new Color(
255, 255, 255)));
nimbusUI.getDefaults().put(
"TextField[Disabled+Focused].backgroundPainter",
new TextFeildPaintBorder(new Color(0, 0, 255), new Color(255,
255, 255)));
nimbusUI.getDefaults().put(
"TextField[Disabled+Selected].backgroundPainter",
new TextFeildPaintBorder(new Color(0, 0, 255), new Color(255,
255, 255)));
nimbusUI.getDefaults().put(
"TextField[Disabled+MouseOver].backgroundPainter",
new TextFeildPaintBorder(new Color(0, 0, 255), new Color(255,
255, 255)));
}
public class TextFeildPaintBorder implements Painter {
private Color light, dark;
private GradientPaint gradPaint;
protected int strokeSize = 1;
/** Color of shadow */
/** Color of shadow */
protected Color shadowColor = new Color(128, 128, 128, 140);
/** Sets if it drops shadow */
protected boolean shady = true;
/** Sets if it has an High Quality view */
protected boolean highQuality = false;
/** Double values for Horizontal and Vertical radius of corner arcs */
protected Dimension arcs = new Dimension(10, 10);
/** Distance between shadow border and opaque panel border */
protected int shadowGap = 1;
/** The offset of shadow. */
protected int shadowOffset = 1; // width of the shadow
/** The transparency value of shadow. ( 0 - 255) */
protected int shadowAlpha = 130;
public TextFeildPaintBorder(Color light, Color dark) {
this.light = light;
this.dark = dark;
}
@Override
public void paint(Graphics2D g, Object object, int w, int h) {
Color shadowColorA = new Color(shadowColor.getRed(),
shadowColor.getGreen(), shadowColor.getBlue(), shadowAlpha);
if (highQuality) {
g.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
}
if (shady) {
g.setColor(shadowColorA);
g.fillRoundRect(0, 0, w - shadowGap, h - shadowGap, arcs.width,
arcs.height);
} else {
shadowGap = 1;
}
gradPaint = new GradientPaint((w / 2.0f), 0, new Color(255, 255,
255), (w / 2.0f), (h / 2.0f), new Color(255, 255, 255),
false);
g.setPaint(gradPaint);
g.fillRoundRect(shadowOffset,// X position
shadowOffset,// Y position
w - strokeSize - shadowOffset, // width
h - strokeSize - shadowOffset, // height
arcs.width, arcs.height);// arc Dimension
g.setColor(new Color(188, 188, 187, 130));
g.setStroke(new BasicStroke(strokeSize));
g.drawRoundRect(shadowOffset,// X position
shadowOffset,// Y position
w - strokeSize - shadowOffset, // width
h - strokeSize - shadowOffset, // height
arcs.width, arcs.height);// arc Dimension
g.setStroke(new BasicStroke());
}
}
}
After compaile and run I got this:
Solution
You would need to use jtxt.setBorder(BorderFactory.createEmptyBorder(2, 10, 2, 2)) instead of d.put("TextField.contentMargins", new Insets(2, 10, 2, 2)):
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class NimbusBaseDemo2 {
public JComponent makeUI() {
//UIDefaults d = UIManager.getLookAndFeelDefaults();
UIDefaults d = new UIDefaults();
//d.put("TextField.opaque", false);
//d.put("TextField.font", new Font("Myriad Pro Light", Font.PLAIN, 13));
//d.put("TextField[Enabled].textForeground", new Color(0, 0, 0));
//d.put("TextField[Disabled].textForeground", new Color(0, 0, 0));
//Insets ins = new Insets(2, 10, 2, 2);
//d.put("TextField.contentMargins", ins);
//d.put("TextField[Enabled].contentMargins", ins);
//d.put("TextField[Disabled].contentMargins", ins);
Painter<JComponent> painter = new TextFeildPaintBorder(
new Color(220, 220, 220), new Color(255, 255, 255));
d.put("TextField[Enabled].backgroundPainter", painter);
d.put("TextField[Focused].backgroundPainter", painter);
d.put("TextField[Selected].backgroundPainter", painter);
Painter<JComponent> painter2 = new TextFeildPaintBorder(
new Color(200, 200, 200), new Color(220, 220, 220));
d.put("TextField[Disabled].backgroundPainter", painter2);
d.put("TextField[Disabled+Focused].backgroundPainter", painter2);
d.put("TextField[Disabled+Selected].backgroundPainter", painter2);
//TEST:
//Painter<JComponent> painter3 = new Painter<JComponent>() {
// @Override public void paint(Graphics2D g, JComponent c, int w, int h) {
// }
//};
//d.put("TextField[Disabled].borderPainter", painter3);
//d.put("TextField[Enabled].backgroundPainter", painter3);
//d.put("TextField[Focused].backgroundPainter", painter3);
JTextField jtxt = new JTextField("Enabled Text Field");
jtxt.setBorder(BorderFactory.createEmptyBorder(2, 10, 2, 2));
jtxt.putClientProperty("Nimbus.Overrides", d);
JTextField txtDisEnabled = new JTextField("Disabled Text Field");
txtDisEnabled.setEnabled(false);
JTextField txtDisEnabled2 = new JTextField("Disabled Text Field");
txtDisEnabled2.setBorder(BorderFactory.createEmptyBorder(2, 10, 2, 2));
txtDisEnabled2.putClientProperty("Nimbus.Overrides", d);
txtDisEnabled2.setEnabled(false);
Box box = Box.createVerticalBox();
box.add(new JSeparator());
box.add(Box.createVerticalStrut(5));
box.add(new JTextField("Enabled Text Field"));
box.add(Box.createVerticalStrut(5));
box.add(jtxt);
box.add(Box.createVerticalStrut(5));
box.add(new JSeparator());
box.add(Box.createVerticalStrut(5));
box.add(txtDisEnabled);
box.add(Box.createVerticalStrut(5));
box.add(txtDisEnabled2);
box.add(Box.createVerticalStrut(5));
JPanel p = new JPanel(new BorderLayout());
p.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
p.add(box, BorderLayout.NORTH);
return p;
}
public static void main(String... args) {
EventQueue.invokeLater(() -> {
try {
for (UIManager.LookAndFeelInfo laf : UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(laf.getName())) {
UIManager.setLookAndFeel(laf.getClassName());
}
}
} catch (Exception e) {
e.printStackTrace();
}
JFrame f = new JFrame();
f.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
f.getContentPane().add(new NimbusBaseDemo2().makeUI());
f.setSize(320, 240);
f.setLocationRelativeTo(null);
f.setVisible(true);
});
}
}
class TextFeildPaintBorder implements Painter<JComponent> {
private Color light, dark;
private GradientPaint gradPaint;
protected int strokeSize = 1;
/** Color of shadow */
protected Color shadowColor = new Color(128, 128, 128, 140);
/** Sets if it drops shadow */
protected boolean shady = true;
/** Sets if it has an High Quality view */
protected boolean highQuality = false;
/** Double values for Horizontal and Vertical radius of corner arcs */
protected Dimension arcs = new Dimension(10, 10);
/** Distance between shadow border and opaque panel border */
protected int shadowGap = 1;
/** The offset of shadow. */
protected int shadowOffset = 1; // width of the shadow
/** The transparency value of shadow. ( 0 - 255) */
protected int shadowAlpha = 130;
public TextFeildPaintBorder(Color light, Color dark) {
this.light = light;
this.dark = dark;
}
@Override
public void paint(Graphics2D g, JComponent c, int w, int h) {
Color shadowColorA = new Color(
shadowColor.getRed(),
shadowColor.getGreen(),
shadowColor.getBlue(),
shadowAlpha);
if (highQuality) {
g.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
}
if (shady) {
g.setColor(shadowColorA);
g.fillRoundRect(
0, 0, w - shadowGap, h - shadowGap, arcs.width, arcs.height);
} else {
shadowGap = 1;
}
gradPaint = new GradientPaint(0, 0, light, 0, h * .5f, dark, false);
g.setPaint(gradPaint);
g.fillRoundRect(shadowOffset,// X position
shadowOffset,// Y position
w - strokeSize - shadowOffset, // width
h - strokeSize - shadowOffset, // height
arcs.width, arcs.height);// arc Dimension
g.setColor(new Color(188, 188, 187, 130));
g.setStroke(new BasicStroke(strokeSize));
g.drawRoundRect(shadowOffset,// X position
shadowOffset,// Y position
w - strokeSize - shadowOffset, // width
h - strokeSize - shadowOffset, // height
arcs.width, arcs.height);// arc Dimension
g.setStroke(new BasicStroke());
}
}
add:
I need to apply same text field theme all text fields in my project.
Another option is to use TextField[Focused].borderPainter and TextField.contentMargins:
d.put("TextField.contentMargins", insets);
d.put("TextField[Focused].borderPainter", emptyPainter);
NimbusBaseDemo3
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class NimbusBaseDemo3 {
public JComponent makeUI() {
JTextField jtxt = new JTextField("Enabled Text Field");
JTextField txtDisEnabled = new JTextField("Disabled Text Field");
txtDisEnabled.setEnabled(false);
JTextField txtDisEnabled2 = new JTextField("Disabled Text Field");
txtDisEnabled2.setEnabled(false);
Box box = Box.createVerticalBox();
box.add(new JSeparator());
box.add(Box.createVerticalStrut(5));
box.add(new JTextField("Enabled Text Field"));
box.add(Box.createVerticalStrut(5));
box.add(jtxt);
box.add(Box.createVerticalStrut(5));
box.add(new JSeparator());
box.add(Box.createVerticalStrut(5));
box.add(txtDisEnabled);
box.add(Box.createVerticalStrut(5));
box.add(txtDisEnabled2);
box.add(Box.createVerticalStrut(5));
JPanel p = new JPanel(new BorderLayout());
p.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
p.add(box, BorderLayout.NORTH);
return p;
}
public static void main(String... args) {
EventQueue.invokeLater(() -> {
try {
for (UIManager.LookAndFeelInfo laf : UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(laf.getName())) {
UIManager.setLookAndFeel(laf.getClassName());
UIDefaults d = UIManager.getLookAndFeelDefaults();
Insets ins = new Insets(2, 10, 2, 2);
d.put("TextField.contentMargins", ins);
d.put("TextField[Enabled].contentMargins", ins);
d.put("TextField[Disabled].contentMargins", ins);
Painter<JComponent> painter = new TextFeildPaintBorder(
new Color(220, 220, 220), new Color(255, 255, 255));
d.put("TextField[Enabled].backgroundPainter", painter);
d.put("TextField[Focused].backgroundPainter", painter);
d.put("TextField[Selected].backgroundPainter", painter);
Painter<JComponent> painter2 = new TextFeildPaintBorder(
new Color(200, 200, 200), new Color(220, 220, 220));
d.put("TextField[Disabled].backgroundPainter", painter2);
Painter<JComponent> painter3 = new Painter<JComponent>() {
@Override public void paint(Graphics2D g, JComponent c, int w, int h) {}
};
d.put("TextField[Disabled].borderPainter", painter3);
d.put("TextField[Enabled].borderPainter", painter3);
d.put("TextField[Focused].borderPainter", painter3);
}
}
} catch (Exception e) {
e.printStackTrace();
}
JFrame f = new JFrame();
f.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
f.getContentPane().add(new NimbusBaseDemo3().makeUI());
f.setSize(320, 240);
f.setLocationRelativeTo(null);
f.setVisible(true);
});
}
}
class TextFeildPaintBorder implements Painter<JComponent> {
private Color light, dark;
private GradientPaint gradPaint;
protected int strokeSize = 1;
/** Color of shadow */
protected Color shadowColor = new Color(128, 128, 128, 140);
/** Sets if it drops shadow */
protected boolean shady = true;
/** Sets if it has an High Quality view */
protected boolean highQuality = false;
/** Double values for Horizontal and Vertical radius of corner arcs */
protected Dimension arcs = new Dimension(10, 10);
/** Distance between shadow border and opaque panel border */
protected int shadowGap = 1;
/** The offset of shadow. */
protected int shadowOffset = 1; // width of the shadow
/** The transparency value of shadow. ( 0 - 255) */
protected int shadowAlpha = 130;
public TextFeildPaintBorder(Color light, Color dark) {
this.light = light;
this.dark = dark;
}
@Override
public void paint(Graphics2D g, JComponent c, int w, int h) {
Color shadowColorA = new Color(
shadowColor.getRed(),
shadowColor.getGreen(),
shadowColor.getBlue(),
shadowAlpha);
if (highQuality) {
g.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
}
if (shady) {
g.setColor(shadowColorA);
g.fillRoundRect(
0, 0, w - shadowGap, h - shadowGap, arcs.width, arcs.height);
} else {
shadowGap = 1;
}
gradPaint = new GradientPaint(0, 0, light, 0, h * .5f, dark, false);
g.setPaint(gradPaint);
g.fillRoundRect(shadowOffset,// X position
shadowOffset,// Y position
w - strokeSize - shadowOffset, // width
h - strokeSize - shadowOffset, // height
arcs.width, arcs.height);// arc Dimension
g.setColor(new Color(188, 188, 187, 130));
g.setStroke(new BasicStroke(strokeSize));
g.drawRoundRect(shadowOffset,// X position
shadowOffset,// Y position
w - strokeSize - shadowOffset, // width
h - strokeSize - shadowOffset, // height
arcs.width, arcs.height);// arc Dimension
g.setStroke(new BasicStroke());
}
}
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