Java JComboBox的圆角
我想让JComboBox有圆角。我带来了这个密码:Java JComboBox的圆角,java,swing,jcombobox,rounded-corners,Java,Swing,Jcombobox,Rounded Corners,我想让JComboBox有圆角。我带来了这个密码: public class BPosCmbBox extends JCboEdc { public BPosCmbBox() { super(); setBorder(new RoundBorder()); } @Override public void paint(Graphics g) { Graphics2D g2 = (Graphics2D) g;
public class BPosCmbBox extends JCboEdc {
public BPosCmbBox() {
super();
setBorder(new RoundBorder());
}
@Override
public void paint(Graphics g) {
Graphics2D g2 = (Graphics2D) g;
g2.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_HRGB);
super.paint(g); //To change body of generated methods, choose Tools | Templates.
}
}
public class RoundBorder extends AbstractBorder {
Color bgColor = new Color(0, 0, 0, 220);
public void paintBorder(Component c, Graphics g, int x, int y, int width, int height) {
((Graphics2D) g).setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
((Graphics2D) g).setColor(bgColor);
((Graphics2D) g).drawRoundRect(x, y, width - 1, height - 1, 12, 12);
}
public Insets getBorderInsets(Component c) {
return new Insets(3, 6, 3, 3);
}
public Insets getBorderInsets(Component c, Insets insets) {
insets.top = insets.left = insets.bottom = insets.right = 3;
return insets;
}
}
但里面还是有这样的方形盒子
有没有办法把里面的方形盒子拆下来?这是否也可能有圆角下拉列表
这是我的版本,使用
BasicComboBoxUI
而不是metalcomboxUI
:
import java.awt.*;
导入java.awt.geom.*;
导入java.util.*;
导入javax.accessibility.*;
导入javax.swing.*;
导入javax.swing.event.*;
导入javax.swing.border.*;
导入javax.swing.plaf.basic.*;
公共类四舍五入测试{
私有静态最终颜色背景=Color.BLACK;
私有静态最终颜色前景=Color.WHITE;
私有静态最终颜色选择前景=Color.ORANGE;
私有JComponent makeUI(){
UIManager.put(“ComboBox.前台”,前台);
UIManager.put(“ComboBox.background”,background);
UIManager.put(“ComboBox.selectionForeground”,selectionForeground);
UIManager.put(“ComboBox.selectionBackground”,BACKGROUND);
UIManager.put(“ComboBox.buttonDarkShadow”,背景);
UIManager.put(“组合框.按钮背景”,前景);
UIManager.put(“ComboBox.buttonHighlight”,前景);
UIManager.put(“ComboBox.buttonShadow”,前景);
UIManager.put(“ComboBox.border”,新的RoundedCornerBorder());
JComboBox combo1=新的JComboBox(makeModel());
combo1.setUI(新的basiccomboxui());
对象o=combo1.getAccessibleContext().getAccessibleChild(0);
if(o JComponent的实例){
JComponent c=(JComponent)o;
c、 setBorder(新的RoundedCornerBorder());
c、 设置前景(前景);
c、 挫折背景(背景);
}
combo1.addPopupMenuListener(新的重量级ContainerListener());
UIManager.put(“ComboBox.border”,新的RoundedCornerBorder1());
JComboBox combo2=新的JComboBox(makeModel());
combo2.setUI(新的basicComboxUI());
o=combo2.getAccessibleContext().getAccessibleChild(0);
if(o JComponent的实例){
JComponent c=(JComponent)o;
c、 收进顺序(新圆角CornerBorder2());
c、 设置前景(前景);
c、 挫折背景(背景);
}
combo2.addPopupMenuListener(新的重量级ContainerListener());
JPanel p=新的JPanel();
p、 增加(1);
p、 增加(2);
p、 set不透明(true);
p、 挫折背景(颜色:灰色);
返回p;
}
私有静态DefaultComboxModel makeModel(){
DefaultComboxModel m=新的DefaultComboxModel();
m、 附录(“1234”);
m、 附录(“55555555555555”);
m、 附录(“6789000000000”);
返回m;
}
公共静态void main(字符串…参数){
EventQueue.invokeLater(()->{
JFrame f=新的JFrame();
f、 setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
f、 getContentPane().add(新的RoundedCornerComboxTest().makeUI());
f、 设置大小(320240);
f、 setLocationRelativeTo(空);
f、 setVisible(真);
});
}
}
类重量级ContainerListener实现PopupMenuListener{
@覆盖公共无效popupMenuWillBecomeVisible(PopupMenuEvent e){
invokeLater(新的Runnable(){
@重写公共无效运行(){
JComboBox组合=(JComboBox)e.getSource();
可访问a=combo.getUI().getAccessibleChild(组合,0);
if(基本组件弹出窗口的实例){
basicmbopopup=(basicmbopopup)a;
Container top=pop.getToLevel祖先();
if(JWindow的顶部实例){
//http://ateraimemo.com/Swing/DropShadowPopup.html
System.out.println(“重量级容器”);
((JWindow)顶部)。收进背景(新颜色(0x0,真));
}
}
}
});
}
@重写公共无效popupMenuWillBecomeInvisible(PopupMenuEvent e){}
@重写公共无效popupMenuCanceled(PopupMenuEvent e){}
}
类RoundedCornerBorder扩展了AbstractBorder{
受保护静态最终int弧=12;
@覆盖公共边界(
元件c、图形g、整数x、整数y、整数宽度、整数高度){
Graphics2D g2=(Graphics2D)g.create();
g2.setRenderingHint(RenderingHints.KEY_抗锯齿,
RenderingHints.VALUE_ANTIALIAS_ON);
int r=弧;
int w=宽度-1;
int h=高度-1;
圆形区域=新区域(新圆形矩形2D.浮动(x,y,w,h,r,r));
if(JPOPUMENU的c实例){
g2.setPaint(c.getBackground());
g2.填充(圆形);
}否则{
容器父级=c.getParent();
if(Objects.nonNull(父级)){
g2.setPaint(parent.getBackground());
面积角=新面积(新矩形2D.Float(x,y,宽度,高度));
角。减(圆);
g2.填充(角落);
}
}
g2.setPaint(c.get前台());
g2.抽签(圆形);
g2.dispose();
}
@覆盖公共插图getBorderInsets(组件c){
返回新的插图(4,8,4,8);
}
@覆盖公共插图getBorderInsets(组件c,插图插图插图){
插图集(4,8,4,8);
返回插图;
}
}
类RoundedCornerBorder1扩展了RoundedCornerBorder{
//http://ateraimemo.com/Swing/RoundedComboBox.html
@覆盖公共边界(
元件c、图形g、整数x、整数y、整数宽度、整数高度){
Graphics2D g2=(Graphics2D)g.create();
g2.setRenderingHint(RenderingHints.KEY_抗锯齿,
RenderingHints.VALUE_ANTIALIAS_ON);
int r=弧;
int w=宽度-1;
int h=高度-1;
圆形区域=新区域(新圆形矩形2D.浮动(x,y,w,h,r,r));
矩形b=round.getBounds();
b、 立根(b.x、b.y+r、b.宽度、b.高度-r);
新增(新区域(b));
容器父级=c.getParent();
if(Objects.nonNull(父级)){
g2.setPaint(parent.getBackground());
面积角=新面积(新矩形2D.Float(x,y,宽度,高度));
角。减(圆);
g2.填充(角落);
}
g2
import java.awt.*;
import java.awt.geom.*;
import java.util.*;
import javax.accessibility.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.border.*;
import javax.swing.plaf.basic.*;
public class RoundedCornerComboBoxTest {
private static final Color BACKGROUND = Color.BLACK;
private static final Color FOREGROUND = Color.WHITE;
private static final Color SELECTIONFOREGROUND = Color.ORANGE;
private JComponent makeUI() {
UIManager.put("ComboBox.foreground", FOREGROUND);
UIManager.put("ComboBox.background", BACKGROUND);
UIManager.put("ComboBox.selectionForeground", SELECTIONFOREGROUND);
UIManager.put("ComboBox.selectionBackground", BACKGROUND);
UIManager.put("ComboBox.buttonDarkShadow", BACKGROUND);
UIManager.put("ComboBox.buttonBackground", FOREGROUND);
UIManager.put("ComboBox.buttonHighlight", FOREGROUND);
UIManager.put("ComboBox.buttonShadow", FOREGROUND);
UIManager.put("ComboBox.border", new RoundedCornerBorder());
JComboBox<String> combo1 = new JComboBox<>(makeModel());
combo1.setUI(new BasicComboBoxUI());
Object o = combo1.getAccessibleContext().getAccessibleChild(0);
if (o instanceof JComponent) {
JComponent c = (JComponent) o;
c.setBorder(new RoundedCornerBorder());
c.setForeground(FOREGROUND);
c.setBackground(BACKGROUND);
}
combo1.addPopupMenuListener(new HeavyWeightContainerListener());
UIManager.put("ComboBox.border", new RoundedCornerBorder1());
JComboBox<String> combo2 = new JComboBox<>(makeModel());
combo2.setUI(new BasicComboBoxUI());
o = combo2.getAccessibleContext().getAccessibleChild(0);
if (o instanceof JComponent) {
JComponent c = (JComponent) o;
c.setBorder(new RoundedCornerBorder2());
c.setForeground(FOREGROUND);
c.setBackground(BACKGROUND);
}
combo2.addPopupMenuListener(new HeavyWeightContainerListener());
JPanel p = new JPanel();
p.add(combo1);
p.add(combo2);
p.setOpaque(true);
p.setBackground(Color.GRAY);
return p;
}
private static DefaultComboBoxModel<String> makeModel() {
DefaultComboBoxModel<String> m = new DefaultComboBoxModel<>();
m.addElement("1234");
m.addElement("5555555555555555555555");
m.addElement("6789000000000");
return m;
}
public static void main(String... args) {
EventQueue.invokeLater(() -> {
JFrame f = new JFrame();
f.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
f.getContentPane().add(new RoundedCornerComboBoxTest().makeUI());
f.setSize(320, 240);
f.setLocationRelativeTo(null);
f.setVisible(true);
});
}
}
class HeavyWeightContainerListener implements PopupMenuListener {
@Override public void popupMenuWillBecomeVisible(PopupMenuEvent e) {
EventQueue.invokeLater(new Runnable() {
@Override public void run() {
JComboBox combo = (JComboBox) e.getSource();
Accessible a = combo.getUI().getAccessibleChild(combo, 0);
if (a instanceof BasicComboPopup) {
BasicComboPopup pop = (BasicComboPopup) a;
Container top = pop.getTopLevelAncestor();
if (top instanceof JWindow) {
//http://ateraimemo.com/Swing/DropShadowPopup.html
System.out.println("HeavyWeightContainer");
((JWindow) top).setBackground(new Color(0x0, true));
}
}
}
});
}
@Override public void popupMenuWillBecomeInvisible(PopupMenuEvent e) {}
@Override public void popupMenuCanceled(PopupMenuEvent e) {}
}
class RoundedCornerBorder extends AbstractBorder {
protected static final int ARC = 12;
@Override public void paintBorder(
Component c, Graphics g, int x, int y, int width, int height) {
Graphics2D g2 = (Graphics2D) g.create();
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
int r = ARC;
int w = width - 1;
int h = height - 1;
Area round = new Area(new RoundRectangle2D.Float(x, y, w, h, r, r));
if (c instanceof JPopupMenu) {
g2.setPaint(c.getBackground());
g2.fill(round);
} else {
Container parent = c.getParent();
if (Objects.nonNull(parent)) {
g2.setPaint(parent.getBackground());
Area corner = new Area(new Rectangle2D.Float(x, y, width, height));
corner.subtract(round);
g2.fill(corner);
}
}
g2.setPaint(c.getForeground());
g2.draw(round);
g2.dispose();
}
@Override public Insets getBorderInsets(Component c) {
return new Insets(4, 8, 4, 8);
}
@Override public Insets getBorderInsets(Component c, Insets insets) {
insets.set(4, 8, 4, 8);
return insets;
}
}
class RoundedCornerBorder1 extends RoundedCornerBorder {
//http://ateraimemo.com/Swing/RoundedComboBox.html
@Override public void paintBorder(
Component c, Graphics g, int x, int y, int width, int height) {
Graphics2D g2 = (Graphics2D) g.create();
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
int r = ARC;
int w = width - 1;
int h = height - 1;
Area round = new Area(new RoundRectangle2D.Float(x, y, w, h, r, r));
Rectangle b = round.getBounds();
b.setBounds(b.x, b.y + r, b.width, b.height - r);
round.add(new Area(b));
Container parent = c.getParent();
if (Objects.nonNull(parent)) {
g2.setPaint(parent.getBackground());
Area corner = new Area(new Rectangle2D.Float(x, y, width, height));
corner.subtract(round);
g2.fill(corner);
}
g2.setPaint(c.getForeground());
g2.draw(round);
g2.dispose();
}
}
class RoundedCornerBorder2 extends RoundedCornerBorder {
@Override public void paintBorder(
Component c, Graphics g, int x, int y, int width, int height) {
Graphics2D g2 = (Graphics2D) g.create();
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
int r = ARC;
int w = width - 1;
int h = height - 1;
Path2D.Float p = new Path2D.Float();
p.moveTo(x, y);
p.lineTo(x, y + h - r);
p.quadTo(x, y + h, x + r, y + h);
p.lineTo(x + w - r, y + h);
p.quadTo(x + w, y + h, x + w, y + h - r);
p.lineTo(x + w, y);
p.closePath();
Area round = new Area(p);
g2.setPaint(c.getBackground());
g2.fill(round);
g2.setPaint(c.getForeground());
g2.draw(round);
g2.setPaint(c.getBackground());
g2.drawLine(x + 1, y, x + width - 2, y);
g2.dispose();
}
}