如何在JavaSwing中使用GradientPaint实现阴影效果?
我想在我的项目中实现这种类型的文本字段 我编写了一个painter类来设置文本字段的背景 这是我的主类,其中我将Nimbus设置为Look and feel:如何在JavaSwing中使用GradientPaint实现阴影效果?,java,swing,awt,nimbus,Java,Swing,Awt,Nimbus,我想在我的项目中实现这种类型的文本字段 我编写了一个painter类来设置文本字段的背景 这是我的主类,其中我将Nimbus设置为Look and feel: import java.awt.FlowLayout; import javax.swing.JFrame; import javax.swing.JTextField; import javax.swing.UIManager; class NimbusBaseDemo extends JFrame { /** *
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();
}
}
这是我的nimbus主题类,在这里我扩展了NimbusLookAndFell类,并根据需要设置默认值
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();
}
}
这是我在NimbusBaseUI类中使用的文本字段主题类
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());
}
}
}
在Compile和run之后,我得到了以下信息:
您需要使用
jText.setBorder(BorderFactory.createEmptyBorder(2,10,2,2))
而不是d.put(“TextField.contentMargins”,新插入(2,10,2,2))
:
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());
}
}
import java.awt.*;
导入java.awt.event.*;
导入javax.swing.*;
公共类NimbusBaseDemo3{
公共JComponent makeUI(){
JTextField jtxt=新的JTextField(“已启用的文本字段”);
JTextField txtDisEnabled=新的JTextField(“禁用的文本字段”);
txtdesenabled.setEnabled(false);
JTextField txtDisEnabled2=新的JTextField(“禁用的文本字段”);
txtDisEnabled2.setEnabled(false);
Box=Box.createVerticalBox();
添加(新的jsepator());
框。添加(框。创建垂直支柱(5));
添加(新的JTextField(“已启用的文本字段”);
框。添加(框。创建垂直支柱(5));
添加框(jtxt);
框。添加(框。创建垂直支柱(5));
添加(新的jsepator());
框。添加(框。创建垂直支柱(5));
框。添加(txtDisEnabled);
框。添加(框。创建垂直支柱(5));
添加框(txtDisEnabled2);
框。添加(框。创建垂直支柱(5));
JPanel p=newjpanel(newborderlayout());
p、 setBorder(BorderFactory.createEmptyByOrder(10,10,10,10));
p、 添加(框,边框布局。北);
返回p;
}
公共静态void main(字符串…参数){
EventQueue.invokeLater(()->{
试一试{
对于(UIManager.LookAndFeelInfo-laf:UIManager.getInstalledLookAndFeels()){
if(“Nimbus”.equals(laf.getName())){
UIManager.setLookAndFeel(laf.getClassName());
UID默认值=UIManager.getLookAndFeelDefaults();
插图ins=新插图(2,10,2,2);
d、 put(“TextField.contentMargins”,ins);
d、 put(“TextField[Enabled].contentMargins”,ins);
d、 put(“TextField[Disabled].contentMargins”,ins);
Painter Painter=新文本feilpaintborder(
新颜色(220,220,220),新颜色(255,255,255));
d、 put(“TextField[Enabled]。backgroundPainter”,painter);
d、 put(“文本字段[聚焦]。背景画家”,画家);
d、 放置(“文本字段[Selected]。背景画师”,画师);
Painter painter2=新文本feilpaintborder(
新颜色(200200200200),新颜色(220220220);
d、 put(“TextField[Disabled]。backgroundPainter”,painter2);
油漆工3=新油漆工(){
@覆盖公共空白绘制(Graphics2D g,JComponent c,int w,int h){
};
d、 put(“TextField[Disabled].borderPainter”,painter3);
d、 put(“TextField[Enabled].borderPainter”,painter3);
d、 put(“文本字段[Focused].borderPainter”,painter3);
}
}
}捕获(例外e){
e、 printStackTrace();
}
JFrame f=新的JFrame();
f、 setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
f、 getContentPane().add(新的NimbusBaseDemo3().makeUI());
f、 设置大小(320240);
f、 setLocationRelativeTo(空);
f、 setVisible(真);
});
}
}
类textfieldaintborder实现了Painter{
私色浅,暗;
私人梯度涂料;
受保护的int strokeSize=1;
/**阴影颜色*/
保护色shadowColor=新颜色(128、128、128、140);
/**设置它是否投射阴影*/
受保护布尔shady=true;
/**设置它是否具有高质量视图*/
受保护布尔高质量=假;
/**角弧的水平和垂直半径的双值*/
受保护尺寸弧=新尺寸(10,10);
/**阴影边框和不透明面板边框之间的距离*/
保护间隙=1;
/**阴影的偏移量*/
受保护的int shadowOffset=1;//阴影的宽度
/**阴影的透明度值。(0-255)*/
受保护整数α=130;
公共文本边框(浅色、深色){
这个。光=光;
this.dark=黑暗;
}
@凌驾
公共空隙涂料(图形2D g、J组件c、int w、int h){
颜色shadowColorA=新颜色(
shadowColor.getRed(),
shadowColor.getGreen(),
shadowColor.getBlue(),
阴影(α);
如果(高质量){
g、 setRenderingHint(RenderingHints.KEY_抗锯齿,
RenderingHints.VALUE_ANTIALIAS_ON);
}
如果(阴凉){
g、 setColor(shadowColorA);
g、 fillRoundRect(
0,0,w-阴影间隙,h-阴影间隙,弧宽,弧高);
}否则{
阴影间隙=1;
}
gradPaint=新的GradientPaint(0,0,亮,0,h*.5f,暗,假);
g、 setPaint(gradPaint);
g、 fillRoundRect(阴影偏移量,//X位置
阴影偏移量,//Y位置
w-strokeSize-shadowOffset,//宽度
h-strokeSize-shadowOffset,//高度
弧.宽度,弧.高度);//弧尺寸
g、 setColor(新颜色(188188187130));
g、 设定行程(新基本行程(行程大小));
g、 drawRoundRect(阴影偏移量,//X位置
阴影偏移量,//Y位置
w-strokeSize-shadowOffset,//宽度
h-strokeSize-shadowOffset,//高度
弧.宽度,弧.高度);//弧尺寸
g、 设定行程(新基本行程());
}
}
更新问题以添加图片并澄清:)希望您能找到答案。。。可能是或可以帮助谢谢@JordiCastillaPost an。
d.put("TextField.contentMargins", insets);
d.put("TextField[Focused].borderPainter", emptyPainter);
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());
}
}