/* * @(#) NAVPanel.java * Copyright 2004 HWStudio. All rights reserved. */package hws.item.smart.panel.navbar;//導入核心Java類庫import java.awt.Font;import java.awt.Graphics;import java.awt.Rectangle;import java.awt.FontMetrics;import java.awt.Image;import java.awt.Point;import java.awt.Button;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.awt.event.MouseEvent;import java.awt.event.MouseListener;import java.awt.event.MouseMotionListener;import java.util.List;import java.util.ArrayList;import javax.swing.JPanel;//導入自定義Java類庫import hws.item.smart.misc.ColorShop;import hws.item.smart.misc.ImageShop;/** * 導航面板 * * @version 0.1 2005-08-07 * @author Hwerz */public class NAVPanel extends JPanel    implements ActionListener, MouseListener, MouseMotionListener {    /*------------------------------------------------------------------------*     *                                屬性定義                                *     *------------------------------------------------------------------------*/    /**     * 按鈕標簽的字體     */    public static final Font BUTTON_FONT = new Font("宋體", Font.PLAIN, 12);    /**     * 導航面板容納按鈕的總數     */    private static final int BUTTON_COUNT = 20;    /**     * 導航面板上的父按鈕數組     */    private Button parentButtons[];    /**     * 已經添加到面板上的父按鈕個數     */    private int numberOfParentButton;    /**     * 被選中父按鈕的索引     */    private int selectedParentButtonIndex;    /**     * 父按鈕的高度     */    private int heightOfParentButton;    /**     * 每個父按鈕里面所包括的子按鈕     */    private Image sonButtons[][];    /**     * 子按鈕的標簽     */    private String sonButtonLabels[][];    /**     * 每個組里子按鈕的個數     */    private int numberOfSonButton[];    /**     * 子按鈕所占面板寬度的比例     */    private int widthPercentOfSonButton;    /**     * 子按鈕之間的間距     */    private int deltaBetweenSonButtons;    /**     * 第一個被顯示的子按鈕     */    private int theFirstDisplaySonButton;    /**     * 被按下的子按鈕     */    private int pressedSonButton;    /**     * 單擊則向上滾動的帶箭頭小按鈕     */    private Image slideUpButton;    /**     * 單擊則向下滾動的帶箭頭小按鈕     */    private Image slideDownButton;    /**     * 是否顯示slideDownButton     */    private boolean showSlideDownButton;    /**     * 子按鈕的滾動次數     */    private int slideStep;    /**     * 子按鈕的滾動節奏     */    private int slideIndex;    /**     * 記錄鼠標的當前位置     */    private Point mousePoint;    /**     * 事件監聽器集合     */    private List listeners;    /*------------------------------------------------------------------------*     *                                構造函數                                *     *------------------------------------------------------------------------*/    /**     * Create a new instance of this class     */    public NAVPanel() {        super();        parentButtons = new Button[BUTTON_COUNT];        numberOfParentButton = 0;        selectedParentButtonIndex = -1;        heightOfParentButton = 25;                sonButtons = new Image[BUTTON_COUNT][BUTTON_COUNT];        sonButtonLabels = new String[BUTTON_COUNT][BUTTON_COUNT];        numberOfSonButton = new int[BUTTON_COUNT];                widthPercentOfSonButton = 40;        deltaBetweenSonButtons = 20;        theFirstDisplaySonButton = -1;        pressedSonButton = -1;                slideUpButton = ImageShop.UP_IMAGEICON.getImage();        slideDownButton = ImageShop.DOWN_IMAGEICON.getImage();        slideStep = 3;        showSlideDownButton = false;        slideIndex = 0;                mousePoint = null;                listeners = new ArrayList();                setLayout(null);        setBackground(ColorShop.NAVPANEL_BG_COLOR);        addMouseMotionListener(this);        addMouseListener(this);    }    /*------------------------------------------------------------------------*     *                                公共方法                                *     *------------------------------------------------------------------------*/    /**     * 添加SonButtonClickedListener事件監聽器     *     * @param listener 待添加的SonButtonClickedListener     */    public synchronized void addSonButtonClickedListener(        SonButtonClickedListener listener) {        listeners.add(listener);    }    /**     * 刪除SonButtonClickedListener事件監聽器     *     * @param listener 待刪除的SonButtonClickedListener     */    public synchronized void removeSonButtonClickedListener(        SonButtonClickedListener listener) {        listeners.remove(listener);    }    /**     * 返回父按鈕的個數     *     * @return 父按鈕的個數     */    public int getNumberOfParentButton() {        return numberOfParentButton;    }    /**     * 返回指定索引的父按鈕對象     *     * @param index 父按鈕的索引     * @return 指定索引的父按鈕對象     */    public Button getParentButton(int index) {        Button parentButton = null;        if (index >= 0 && index < numberOfParentButton) {            parentButton = parentButtons[index];        }        return parentButton;    }    /**     * 添加父按鈕     *     * @param text 待添加父按鈕的文本     * @return 如果添加成功則返回true，否則返回false     */    public boolean addParentButton(String text) {        boolean success = false;        int i = numberOfParentButton;        if (i < BUTTON_COUNT) {            Button button = new Button(text);            parentButtons[i] = button;            numberOfSonButton[i] = 0;            numberOfParentButton++;            add(button);            button.addActionListener(this);            setSelectedParentButton(i);            success = true;        }         return success;    }    /**     * 向指定的父按鈕所在的組里添加子按鈕     *     * @param index 指定父按鈕的索引     * @param image 待添加子按鈕的圖標     * @param text 待添加子按鈕的文本     */    public void addSonToParent(int index, Image image, String text) {        if (index < numberOfParentButton             && numberOfSonButton[index] < BUTTON_COUNT) {            sonButtons[index][numberOfSonButton[index]] = image;            sonButtonLabels[index][numberOfSonButton[index]] = text;            numberOfSonButton[index]++;            repaint();        }    }    /**     * 選中指定索引的父按鈕     *     * @param index 父按鈕的索引     */    public void setSelectedParentButton(int index) {        if (index >= 0 && index < numberOfParentButton) {            if (selectedParentButtonIndex != index) {                selectedParentButtonIndex = index;                theFirstDisplaySonButton = 0;                repaint();            }        }    }    /*------------------------------------------------------------------------*     *                                私有方法                                *     *------------------------------------------------------------------------*/    /**     * 返回子按鈕的寬度(注意：所有子按鈕的寬度都一致)     *     * @return 子按鈕的寬度     */    private int getSonButtonWidth() {        return (widthPercentOfSonButton * getWidth()) / 100;    }    /**     * 返回指定子按鈕的邊界(注意：這個子按鈕是隸屬于當前選定的父按鈕)     *     * @param index 子按鈕的索引號     * @return 子按鈕的邊界     */    private Rectangle getSonButtonRectangle(int index) {        int x = (getWidth() - getSonButtonWidth()) / 2;        int y = (selectedParentButtonIndex + 1) * heightOfParentButton            + (index - theFirstDisplaySonButton) * (getSonButtonWidth()            + deltaBetweenSonButtons) + deltaBetweenSonButtons / 2;        Rectangle rectangle = new Rectangle(x, y, getSonButtonWidth(),            getSonButtonWidth());        return rectangle;    }    /**     * 返回slideDownButton的邊界     *     * @return slideDownButton的邊界     */    private Rectangle getSlideDownButtonRect() {        int y = getHeight() - (numberOfParentButton            - selectedParentButtonIndex) * heightOfParentButton;        Rectangle rectangle = new Rectangle(getWidth() - 20, y, 16, 16);        return rectangle;    }    /**     * 返回slideUpButton的邊界     *     * @return slideUpButton的邊界     */    private Rectangle getSlideUpButtonRect() {        int y = (selectedParentButtonIndex + 1) * heightOfParentButton + 16;        Rectangle rectangle = new Rectangle(getWidth() - 20, y, 16, 16);        return rectangle;    }    /**     * 返回指定位置處按鈕的索引如果是父按鈕，則返回值為索引的相反數減去2；如果是子按     * 鈕，則返回索引值     *     * @param point 指定的位置     * @return 指定位置處按鈕的索引     */    private int getButtonIndex(Point point) {        int index = -1;        if (point != null) {            if (numberOfParentButton != 0) {                for (int i = 0; i < numberOfParentButton; i++) {                    Rectangle rectangle = getParentButton(i).getBounds();                    //鼠標在某一父按鈕的上面                    if (rectangle.contains(point)) {                        index = -i - 2;                        break;                    }                }                if (index == -1) {                    for (int i = theFirstDisplaySonButton;                        i < theFirstDisplaySonButton                        + numberOfSonButton[selectedParentButtonIndex]; i++) {                        Rectangle rectangle = getSonButtonRectangle(i);                        //鼠標在某一子按鈕的上面                        if (rectangle.contains(point)) {                            index = i;                            break;                        }                    }                }            }