JCombox

A component that combines a button or editable field and a drop-down list.
The user can select a value from the drop-down list, which appears at the user's request.
If you make the combo box editable, then the combo box includes an editable field into which the user can type a value.

话说JComboBox 默认外观确实不是太好看..在由于本人有时实在太贱.就是想要它好看...所以..这不..又折腾了..

其实这个ComboBox 刚开始想改变外观只考虑到renderer 毕竟swing上所有的界面显示全靠renderer来控制..

所以着手写ComboBoxRenderer. 总是觉的 JComboBox 似乎不太好搞定因为它不但有显示框还有小键头.

还有弹出的List 还有ScrollBar..等等.. 似乎不那么好搞...不过Swing是强大的 ..只要你能想到..就可以做到.

那么我们要做几件事.

1: 重载JComboBox 并且设置面板透明

2: 新建renderer 实现ListCellRenderer接口

3: 重载BasicComboBoxUI

1.重载JComboBox 并且设置面板透明设置renderer 以及设置 ui

package swing.combox.customize;

import java.awt.Dimension;

import java.util.Vector;

import javax.swing.ComboBoxModel;

import javax.swing.JComboBox;

public class IComboBox extends JComboBox {

    private static final long serialVersionUID = 1L;

    public IComboBox() {

        super();

        init();

    }

    public IComboBox(ComboBoxModel model) {

        super(model);

        init();

    }

    public IComboBox(Object[] items) {

        super(items);

        init();

    }

    public IComboBox(Vector items) {

        super(items);

        init();

    }

    private void init() {

        setOpaque(false);

        setUI(new IComboBoxUI());

        setRenderer(new IComboBoxRenderer());

        // setBackground(XUtil.defaultComboBoxColor);

    }

    public Dimension getPreferredSize() {

        return super.getPreferredSize();

    }

}

2.新建renderer 实现ListCellRenderer接口.注意.这里的ComboBoxRenderer它是控制combobox弹出的List 并非控制JComboBox的注意他实现的是ListCellRenderer

package swing.combox.customize;

import java.awt.Color;

import java.awt.Component;

import javax.swing.DefaultListCellRenderer;

import javax.swing.JLabel;

import javax.swing.JList;

import javax.swing.ListCellRenderer;

public class IComboBoxRenderer implements ListCellRenderer {

    private DefaultListCellRenderer defaultCellRenderer = new DefaultListCellRenderer();

    public IComboBoxRenderer() {

        super();

    }

    public Component getListCellRendererComponent(JList list, Object value,

            int index, boolean isSelected, boolean cellHasFocus) {

        JLabel renderer = (JLabel) defaultCellRenderer.getListCellRendererComponent(

                list, value, index, isSelected, cellHasFocus);

        if (isSelected) {

            // renderer.setBackground(XUtil.defaultComboBoxBoundsColor);

            renderer.setForeground(Color.WHITE);

        } else {

            renderer.setBackground(Color.WHITE);

        }

        // list.setSelectionBackground(XUtil.defaultComboBoxColor);

        list.setBorder(null);

        // renderer.setFont(XUtil.defaultComboBoxFont);

        renderer.setHorizontalAlignment(JLabel.CENTER);

        return renderer;

    }

}

3.重载BasicComboBoxUI .sure 这里当然要注意.因为他是JComboBox的绘制机制

这里包括ComboBox右边的那个箭头的Button.(我们已经通过重写 createArrowButton 来改变这个Button);

至于弹出的List ,it in here, look it ..createPoput(); it create ComboPopup.(不好意思最近在学英文总是那么顺口来那么几句.)

这里存在一个ScrollPane 它包含了List.并且我们重写ScrollPane的paintBorder方法来让我们画出List的Border

package swing.combox.customize;

import java.awt.Color;

import java.awt.Dimension;

import java.awt.Font;

import java.awt.Graphics;

import java.awt.Graphics2D;

import java.awt.Rectangle;

import java.awt.RenderingHints;

import javax.swing.JButton;

import javax.swing.JComponent;

import javax.swing.JScrollPane;

import javax.swing.ScrollPaneConstants;

import javax.swing.plaf.basic.BasicComboBoxUI;

import javax.swing.plaf.basic.BasicComboPopup;

import javax.swing.plaf.basic.ComboPopup;

public class IComboBoxUI extends BasicComboBoxUI {

    private JButton arrow;

    private boolean boundsLight = false;

    private static final int ARCWIDTH = 15;

    private static final int ARCHEIGHT = 15;

    public IComboBoxUI() {

        super();

    }

    protected JButton createArrowButton() {

        arrow = new JButton();

        // arrow.setIcon(XUtil.defaultComboBoxArrowIcon);

        arrow.setRolloverEnabled(true);

        // arrow.setRolloverIcon(XUtil.defaultComboBoxArrowIcon_Into);

        arrow.setBorder(null);

        // arrow.setBackground(XUtil.defaultComboBoxColor);

        arrow.setOpaque(false);

        arrow.setContentAreaFilled(false);

        return arrow;

    }

    public void paint(Graphics g, JComponent c) {

        hasFocus = comboBox.hasFocus();

        Graphics2D g2 = (Graphics2D) g;

        if (!comboBox.isEditable()) {

            Rectangle r = rectangleForCurrentValue();

            // 重点:JComboBox的textfield 的绘制 并不是靠Renderer来控制 这点让我很吃惊.

            // 它会通过paintCurrentValueBackground来绘制背景

            // 然后通过paintCurrentValue();去绘制JComboBox里显示的值

            paintCurrentValueBackground(g2, r, hasFocus);

            paintCurrentValue(g2, r, hasFocus);

        }

        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,

                RenderingHints.VALUE_ANTIALIAS_ON);

        int width = (int) this.getPreferredSize(c).getWidth()

                + arrow.getWidth() - 2;

        int height = 0;

        int heightOffset = 0;

        if (comboBox.isPopupVisible()) {

            heightOffset = 5;

            height = (int) this.getPreferredSize(c).getHeight();

            // arrow.setIcon(XUtil.defaultComboBoxArrowIcon_Into);

        } else {

            heightOffset = 0;

            height = (int) this.getPreferredSize(c).getHeight() - 1;

            // arrow.setIcon(XUtil.defaultComboBoxArrowIcon);

        }

        if (comboBox.isFocusable()) {

            g2.setColor(new Color(150, 207, 254));

        }

        g2.drawRoundRect(0, 0, width, height + heightOffset, ARCWIDTH, ARCHEIGHT);

    }

    public void paintCurrentValue(Graphics g, Rectangle bounds, boolean hasFocus) {

        Font oldFont = comboBox.getFont();

        // comboBox.setFont(XUtil.defaultComboBoxFont);

        super.paintCurrentValue(g, bounds, hasFocus);

        comboBox.setFont(oldFont);

    }

    public Dimension getPreferredSize(JComponent c) {

        return super.getPreferredSize(c);

    }

    public boolean isBoundsLight() {

        return boundsLight;

    }

    public void setBoundsLight(boolean boundsLight) {

        this.boundsLight = boundsLight;

    }

    protected ComboPopup createPopup() {

        ComboPopup popup = new BasicComboPopup(comboBox) {

            protected JScrollPane createScroller() {

                JScrollPane sp = new JScrollPane(list,

                        ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED,

                        ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);

                sp.setHorizontalScrollBar(null);

                return sp;

            }

            // 重载paintBorder方法 来画出我们想要的边框..

            public void paintBorder(Graphics g) {

                Graphics2D g2 = (Graphics2D) g;

                g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,

                        RenderingHints.VALUE_ANTIALIAS_ON);

                g2.setColor(new Color(150, 207, 254));

                g2.drawRoundRect(0, -arrow.getHeight(), getWidth() - 1, getHeight() + arrow.getHeight() - 1, 0, 0);

            }

        };

        return popup;

    }

}

ok. 那么到这里 ComboBox这块已经end 但是似乎还有个问题存在那就是createPopup 方法里的ScrollPane的滚动条还是有点丑.

so。.next 我们搞定 it.

1:继承 ScrollBar 并且 setUI();

2:继承 BasicScrollBarUI 我们来G出我们的效果.

paintThumb 绘制scrollbar里拖动的小box 我们先画个边框 and draw two Orange line.

paintTrack 绘制scrollbar里小box的轨迹.也就是那个啥(术语怎么说来着?拖拽滑块?).

注意:我们首先将Graphics设置透明后在去画面板然后立刻把Graphics设置为不透明..

这样是为了能让我们把轨迹左边边界画出来...

createIncreaseButton draw down arrowButton 小心千万不要use JButton button = new JButton();

should use BasicArrowButton 不然你将无法click this button 并产生你想要的效果..

你猜的到 createDecreaseButton(); 方法是干什么的..(笨蛋上面那个Button啦);

package swing.combox.customize;

import java.awt.AlphaComposite;

import java.awt.Color;

import java.awt.Graphics;

import java.awt.Graphics2D;

import java.awt.Rectangle;

import java.awt.RenderingHints;

import javax.swing.JButton;

import javax.swing.JComponent;

import javax.swing.plaf.basic.BasicArrowButton;

import javax.swing.plaf.basic.BasicScrollBarUI;

public class IScrollBarUI extends BasicScrollBarUI {

    public IScrollBarUI() {

        super();

    }

    protected void paintThumb(Graphics g, JComponent c, Rectangle thumbBounds) {

        int width = thumbBounds.width;

        int height = thumbBounds.height;

        Graphics2D g2 = (Graphics2D) g;

        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,

                RenderingHints.VALUE_ANTIALIAS_ON);

        g2.translate(thumbBounds.x, thumbBounds.y);

//        g2.setColor(XUtil.defaultComboBoxBoundsColor);

        g2.drawRoundRect(1, 1, width - 2, height - 2, 5, 5);

        g2.setColor(Color.ORANGE);

        g2.drawLine(3, height / 2, width - 4, height / 2);

        g2.drawLine(3, height / 2 + 3, width - 4, height / 2 + 3);

        g2.translate(-thumbBounds.x, -thumbBounds.y);

    }

    protected void paintTrack(Graphics g, JComponent c, Rectangle trackBounds) {

//        g.setColor(XUtil.defaultComboBoxColor);

        int x = trackBounds.x;

        int y = trackBounds.y;

        int width = trackBounds.width;

        int height = trackBounds.height;

        Graphics2D g2 = (Graphics2D) g;

        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,

                RenderingHints.VALUE_ANTIALIAS_ON);

        g2.setComposite(AlphaComposite

                .getInstance(AlphaComposite.SRC_OVER, 0.1f));

        g2.fill3DRect(x, y, width, height, true);

        g2.setComposite(AlphaComposite

                .getInstance(AlphaComposite.SRC_OVER, 1f));

//        g2.setColor(XUtil.defaultComboBoxBoundsColor.brighter());

        g2.fill3DRect(x, y, 1, height + 1, true);

        if (trackHighlight == DECREASE_HIGHLIGHT) {

            paintDecreaseHighlight(g);

        }

        else if (trackHighlight == INCREASE_HIGHLIGHT) {

            paintIncreaseHighlight(g);

        }

    }

    protected JButton createIncreaseButton(int orientation) {

        JButton button = new BasicArrowButton(orientation) {

            public void paint(Graphics g) {

                Graphics2D g2 = (Graphics2D) g;

                g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,

                        RenderingHints.VALUE_ANTIALIAS_ON);

//                g2.setColor(XUtil.defaultComboBoxBoundsColor);

                g2.drawLine(0, 0, 0, getHeight());

                g2.drawLine(0, 0, getWidth(), 0 - 1);

//                g2.drawImage(((ImageIcon) XUtil.defaultComboBoxArrowIcon_Into).getImage(), -1, 0, null);

            }

        };

        button.setOpaque(false);

        return button;

    }

    protected JButton createDecreaseButton(int orientation) {

        JButton button = new BasicArrowButton(orientation) {

            public void paint(Graphics g) {

                Graphics2D g2 = (Graphics2D) g;

                g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,

                        RenderingHints.VALUE_ANTIALIAS_ON);

//                g2.setColor(XUtil.defaultComboBoxBoundsColor);

                g2.drawLine(0, 0, 0, getHeight());

                g2.drawLine(0, getHeight() - 1, getWidth(), getHeight());

//                g2.drawImage(((ImageIcon) XUtil.defaultComboBoxArrowIcon_Into).getImage(), -1, 0, null);

            }

        };

        button.setOpaque(false);

        return button;

    }

}

http://blog.chinaunix.net/uid-12888785-id-2384253.html

http://www.blogjava.net/chensiyu04/archive/2011/03/27/346868.html

http://blog.sina.com.cn/s/blog_4e6d7e6901000bvm.html

http://blog.chinaunix.net/uid-12888785-id-2384254.html

http://www.2cto.com/kf/201103/86224.html

http://blog.csdn.net/bradwoo8621/article/details/1523118

http://blog.sina.com.cn/s/blog_4412ae250100062n.html

设置JComboBox中JList中元素的ToolTipText需要JComboBox.setRenderer(实现设置ToolTipText的ListCellRenderer);
设置JComboBox的ToolTipText需要JComboBox.addItemListener(new ItemListener()的itemStateChanged方法中调用JComboBox.setToolTipText("tips")

package swing.combox;

import java.awt.Component;

import java.awt.Dimension;

import java.awt.FlowLayout;

import java.awt.event.ItemEvent;

import java.awt.event.ItemListener;

import javax.swing.DefaultListCellRenderer;

import javax.swing.JComboBox;

import javax.swing.JComponent;

import javax.swing.JFrame;

import javax.swing.JList;

import javax.swing.JTextField;

import javax.swing.ListCellRenderer;

import javax.swing.SwingUtilities;

/*2015-6-1*/

public class ComboxDemo extends JFrame {

    private static final long serialVersionUID = 1L;

    public ComboxDemo() {

        this.setLayout(new FlowLayout());

        final JTextField text = new JTextField("test", 10);

        this.add(text);

        String[] petStrings = { "Bird", "Cat", "Dog", "Rabbit", "Pig", "Tiger", "Lion", "Egg", "Swan", "Goose", "Chinese sturgeon" };

        final JComboBox petList = new JComboBox(petStrings);

        this.add(petList);

        petList.setRenderer(new ListCellRendererImpl1());

        // petList.setRenderer(new ListCellRendererImpl2());

        petList.setPreferredSize(new Dimension(100, 20));

        petList.addItemListener(new ItemListener() {

            @Override

            public void itemStateChanged(ItemEvent e) {

                text.setText(petList.getSelectedItem().toString() + ":" + petList.getSelectedIndex());

                petList.setToolTipText(petList.getSelectedItem().toString());

            }

        });

        petList.setSelectedIndex(4);

        // petList.setSelectedItem("Swan");

    }

    public static void main(String[] args) {

        SwingUtilities.invokeLater(new Runnable() {

            @Override

            public void run() {

                ComboxDemo comboBox = new ComboxDemo();

                comboBox.setDefaultCloseOperation(EXIT_ON_CLOSE);

                comboBox.setSize(400, 200);

                comboBox.setVisible(true);

                comboBox.setLocationRelativeTo(null);

            }

        });

    }

}

/**

 * for JList ToolTextTip

 */

class ListCellRendererImpl1 extends JTextField implements ListCellRenderer {

    private static final long serialVersionUID = 1L;

    @Override

    public Component getListCellRendererComponent(JList list, Object value, int index, boolean isSelected, boolean cellHasFocus) {

        String item = (value == null) ? "" : value.toString();

        setText(item);

        setBorder(null);

        list.setToolTipText("第" + index + "被选中:" + item);

        return this;

    }

}

class ListCellRendererImpl2 extends DefaultListCellRenderer {

    private static final long serialVersionUID = 1L;

    @Override

    public Component getListCellRendererComponent(JList list, Object value, int index, boolean isSelected, boolean cellHasFocus) {

        JComponent component = (JComponent) super.getListCellRendererComponent(list, value, index, isSelected, cellHasFocus);

        setToolTipText(value + ":" + index);

        return component;

    }

    @Override

    public void setToolTipText(String text) {

        super.setToolTipText(text);

    }

}

JCombox的更多相关文章

java中的jComBox的基本用法
jComBox获取选中的字符串 getSelectedItem().toString()返回一个字符串 getSelectedItem()返回一个对象. getSelectedIndex()得到选择值 ...
JComBox的用法
JComboBox的使用: 类层次结构图: java.lang.Object --java.awt.Component --java.awt.Container - ...
java GUI之事件处理
常见事件及相应事件源类型事件源用户操作事件 JButton 点击按钮 ActionEvent JTextField 在文本域按回车键 ActionEvent JCheckBox 点击复选框 Ac ...
java 的Swing
1.原来的AWT组件来自java.awt包,而AWT组件的java应用程序在不同平台的界面显示不同.但是在不同平台运用Swing开发的应用程序,就可以使用同一的GUI界面. 2.SWing组件通常被称 ...
java图形
JFreeCharteclipse图形化编程插件jigloojfaceibm的jface基于swt,swing解决了awt存在的lcd问题.swing组件:container,window,frame ...
JComboBox实现时间控件
1.认识JComboBox控件最近学习使用了JComboBox组件: 在学习使用了JList以及Jtree组件之后,对于使用JComboBox还是很轻松的. JcomboBox的其实也是由一个Mod ...
JavaGUI之Swing简单入门示例
简介 AWT(译:抽象窗口工具包),是Java的平台独立的窗口系统,图形和用户界面器件工具包. Swing 是为了解决 AWT 存在的问题而以 AWT 为基础新开发的包(在使用Swing时也常会用到j ...
Java-GUI基础（三）java.swing
1. 简介 swing与awt:可以认为awt是swing的前身,awt即Abstrace Window Toolkit抽象窗口工具包,swing是为了解决awt在开发中的问题而开发的,是awt的改良 ...
Java-GUI 编程之 JList、JComboBox实现列表框
目录 JList.JComboBox实现列表框简单列表框不强制存储列表项的ListModel和ComboBoxModel 强制存储列表项的DefaultListModel和DefaultCombo ...

随机推荐

MVC超链接
<1> return RedirectToAction(Index); //跳转到Index控制器 <%@ Page Language="C#" Inherits ...
Python倒计时器(转)
# Countdown using Tkinter from Tkinter import * import time import tkMessageBox class App: def __ini ...
Eclipse扩展点实践之添加菜单项（ActionSet方式实现）
ActionSet方式比起Command方式,比较直观,但是功能有限. 首先:新建一个项目,在Extension中添加org.eclipse.ui.actionSets的扩展. 然后,new-> ...
zoj3209（DLX）
题目链接:http://acm.hust.edu.cn/vjudge/problem/viewProblem.action?id=16234 题意:给p张小纸片, 问能不能选出尽量少的一部分或全部数量 ...
CodeIgniter Apacheserver htaccess SEO重写写法
1)支持重写 2)兼容全部APACHE server 3)假设不是文件,请求的结尾不包含反斜杠,自己主动跳转到反斜杠 4)文件名称 .htaccess 5)这个放到nginxserver怎么都不支持重 ...
Cantor的数表【找规律】
小俞同学,近期勤学苦练数学,对一种数表产生了兴趣. 数表例如以下: 1/1 1/2 1/3 1/4 1/5 2/1 2/2 2/3 2/4 3/1 3/2 3/3 4/1 4/2 5/1 她冥思苦相了 ...
站点接入QQ登录
首先引入授权js文件 <script type="text/javascript" src="http://qzonestyle.gtimg.cn/qzone/op ...
linux下mysql数据的导出和导入
导出整个数据库中的全部数据 1.在linux命令行下输入: mysqldump -u userName -p dabaseName > fileName.sql fileName.sql最好加上 ...
依赖注入（DI）
依赖注入(DI) IoC主要体现了这样一种设计思想:通过将一组通用流程的控制从应用转移到框架之中以实现对流程的复用,同时采用“好莱坞原则”是应用程序以被动的方式实现对流程的定制.我们可以采用若干设 ...
C++结构体：默认构造函数，复制构造函数，重载=运算符
C++结构体提供了比C结构体更多的功能,如默认构造函数,复制构造函数,运算符重载,这些功能使得结构体对象能够方便的传值. 比如,我定义一个简单的结构体,然后将其作为vector元素类型,要使用的话,就 ...

JCombox

JCombox的更多相关文章

随机推荐

热门专题