sdalistview.java

很好的UI界面源码..还有自己的输入法,可以更换风格.可以学习和使用

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package cn.sda.ui;

import cn.sda.event.KeybordEvent;
import cn.sda.event.ListViewSelectChangeEvent;
import cn.sda.event.ListViewSelectItemEvent;
import cn.sda.event.PointerEvent;
import java.util.Vector;
import javax.microedition.lcdui.Graphics;
import javax.microedition.lcdui.Image;
import javax.microedition.lcdui.Font;

/**
 * @author not attributable
 * @version 1.0
 */
public class SDAListView extends SDABaseControl {
    //边框
    private int borderStyle = SDAConsts.bsFixedSingle;
    //滚动边框(多行)
    private int scrollBars = SDAConsts.srNone;
    private int barwidth = 10;
    //边框线颜色
    private int borderColor = SDAConsts.clBlack;
    //滚动条颜色
    private int scrollBarColor = SDAConsts.clBtnFace;
    //选中的项目的颜色
    private int itemFocusedRectColor = SDAConsts.clBtnShadow;
    private int itemFocusedFontColor = SDAConsts.clActiveCaption;
    //列
    private int colCount = 3;
    //行
    private int rowHeight = 40;
    private boolean autoRowHeight = false;
    //内部变量
    //行数，行最大长度
    private int maxLenght = 0;
    private int maxHeight = 0;
    //垂直开始显示位置
    private int startTop = 0;
    //水平开始显示位置
    private int startLeft = 0;
    //变动前位置
    private int oldStartLine = 0;
    private int oldStartLeft = 0;
    //水平滚条位置
    private int HSLeft = 0;
    private int HSTop = 0;
    private int HSWidth = 0;
    private int HSHeight = 0;
    //垂直滚动条位置
    private int VSLeft = 0;
    private int VSTop = 0;
    private int VSWidth = 0;
    private int VSHeight = 0;
    //点击的滚动条的位置
    private int oldScrollPointx = 0;
    private int oldScrollPointy = 0;
    //按下滚动条
    private boolean isscrollbarpointdown = false;
    //记录按下的滚动条0:水平，1：垂直的
    private byte scrollbardownHV = 0;
    //项目管理
    private Vector itemList = null;
    //但前选中项
    private SDAListViewItem curItem = null;
    //最大列，最大行
    private int maxCol = 0;
    private int maxRow = 0;
    //是否显示文字
    private boolean showItemText = false;
    private boolean showItemRect = true;
    //事件
    private ListViewSelectChangeEvent onSelectChange = null;
    private ListViewSelectItemEvent onSelectItem = null;

    public SDAListView() {
        super();
        internalSDAListView();
    }

    private void internalSDAListView() {
        itemList = new Vector();
        this.setVisible(true);
        setLeft(0);
        setTop(0);
        setBorderStyle(SDAConsts.bsFixedSingle);
        super.setWidth(160);
        setHeight(100);
        super.setBackColor(SDAConsts.clWhite);
        this.onPointerPressed = new PointerEvent() {

            public void Event(SDABaseControl ctrl, int x, int y) {
                doPointerPressed(x, y);
            }
        };
        this.onPointerReleased = new PointerEvent() {

            public void Event(SDABaseControl ctrl, int x, int y) {
                doPointerReleased(x, y);
            }
        };
        this.onKeyUp = new KeybordEvent() {

            public void Event(SDABaseControl ctrl, int keyCode) {
                doKeyUp(keyCode);
            }
        };
    }
    //画
    public void paint() {
        internalPaint();
    }

    private void internalPaint() {
        if (!IsCanPaint()) {
            return;
        }
        Graphics g = form.getGraphics();
        g.setFont(getFont());
        InternalPaint(g);
    }

    protected void InternalPaint(Graphics g) {
        //可视下才画
        if (isVisible()) {
            //初始化引用变量
            int thisWidth = getWidth();
            int thisHeight = getHeight();
            int HBarWidth = getHBarWidth();
            int VBarHeight = getVBarHeight();
            //对齐方式处理后，画组件
            //设置字体
            g.setFont(super.getFont());
            //外框
            SetClip(g);
            //透明
            if (!isTransparent()) {
                g.setColor(backColor);
                fillRect(g, 0, 0, thisWidth, thisHeight);
            }
            if (borderStyle == SDAConsts.bsFixed3D) {
                g.setColor(SDAConsts.clGray);
                drawLine(g, 0, 0, thisWidth, 0);
                drawLine(g, 0, 0, 0, thisHeight);
                g.setColor(SDAConsts.clBlack);
                drawLine(g, 1, 1, thisWidth - 1, 1);
                drawLine(g, 1, 1, 1, thisHeight - 1);
                g.setColor(SDAConsts.clBtnFace);
                drawLine(g, 2, thisHeight - 1, thisWidth - 2, thisHeight - 1);
                drawLine(g, thisWidth - 1, 2, thisWidth - 1, thisHeight - 1);
                g.setColor(SDAConsts.clWhite);
                drawLine(g, 1, thisHeight, thisWidth, thisHeight);
                drawLine(g, thisWidth, 1, thisWidth, thisHeight);
                if (isFoucsed()) {
                    g.setColor(SDAConsts.clFocusShadow);
                    drawRect(g, 1, 1, thisWidth - 2, thisHeight - 2);
                }
            }
            if (borderStyle == SDAConsts.bsFixedSingle) {
                //边框
                g.setColor(this.getBorderColor());
                drawRect(g, 0, 0, thisWidth, thisHeight);
                if (isFoucsed()) {
                    g.setColor(SDAConsts.clFocusShadow);
                    drawRect(g, 1, 1, thisWidth - 2, thisHeight - 2);
                }
            }
            //画项目
            paintItems(g);
            //滚动条
            if (borderStyle == SDAConsts.bsFixed3D) {
                SetClip(g, 2, 2, thisWidth - 2, thisHeight - 2);
            } else {
                SetClip(g, 1, 1, thisWidth - 1, thisHeight - 1);
            }
            if ((scrollBars == SDAConsts.srHorizontal) || (scrollBars == SDAConsts.srBoth)) {
                //水平
                g.setColor(scrollBarColor);
                fillRect(g, 0, thisHeight - barwidth, barwidth, barwidth);
                fillRect(g, HBarWidth - barwidth, thisHeight - barwidth, barwidth, barwidth);
                g.setColor(getBorderColor());
                drawRect(g, 0, thisHeight - barwidth, barwidth, barwidth);
                drawRect(g, HBarWidth - barwidth, thisHeight - barwidth, barwidth, barwidth);
                //滚动块
                g.setColor(backColor);
                fillRect(g, barwidth, thisHeight - barwidth, HBarWidth - 2 * barwidth, barwidth);
                g.setColor(this.getBorderColor());
                drawRect(g, barwidth, thisHeight - barwidth, HBarWidth - 2 * barwidth, barwidth);
                //块大小
                int pwidth = HBarWidth - 2 * barwidth;

                if (maxLenght > HBarWidth) {
                    pwidth = ((HBarWidth) * (HBarWidth - 2 * barwidth)) / maxLenght;
                }

                //计算块位置
                int ppos = (startLeft * (HBarWidth - 2 * barwidth)) / maxLenght;
                //修正位置
                if (ppos + pwidth > HBarWidth - 2 * barwidth) {
                    ppos = HBarWidth - 2 * barwidth - pwidth;
                }
                //画块
                g.setColor(scrollBarColor);
                fillRect(g, barwidth + ppos, thisHeight - barwidth, pwidth, barwidth);
                g.setColor(getBorderColor());
                drawRect(g, barwidth + ppos, thisHeight - barwidth, pwidth, barwidth);
                //记录大小
                HSLeft = barwidth + ppos;
                HSTop = thisHeight - barwidth;
                HSWidth = pwidth;
                HSHeight = barwidth;
                //画块上的线
                int tpos = HSWidth / 2 + HSLeft;
                drawRect(g, tpos, HSTop + 2, 0, HSHeight - 4);
                if (tpos - 2 > HSLeft) {
                    drawRect(g, tpos - 2, HSTop + 2, 0, HSHeight - 4);
                }
                if (tpos + 2 < HSLeft + HSWidth) {
                    drawRect(g, tpos + 2, HSTop + 2, 0, HSHeight - 4);
                }
                //三角
                g.setColor(getBorderColor());
                fillTriangle(g, barwidth / 2 - 2, thisHeight - barwidth / 2,
                        barwidth / 2 + 2, thisHeight - barwidth / 2 - 4,
                        barwidth / 2 + 2, thisHeight - barwidth / 2 + 4);
                fillTriangle(g, HBarWidth - barwidth + barwidth / 2 + 2, thisHeight - barwidth / 2,
                        HBarWidth - barwidth + barwidth / 2 - 2, thisHeight - barwidth / 2 - 4,
                        HBarWidth - barwidth + barwidth / 2 - 2, thisHeight - barwidth / 2 + 4);
            }
            if ((scrollBars == SDAConsts.srVertical) || (scrollBars == SDAConsts.srBoth)) {
                //垂直
                g.setColor(scrollBarColor);
                fillRect(g, thisWidth - barwidth, 0, barwidth, barwidth);
                fillRect(g, thisWidth - barwidth, VBarHeight - barwidth, barwidth, barwidth);
                g.setColor(getBorderColor());
                drawRect(g, thisWidth - barwidth, 0, barwidth, barwidth);
                drawRect(g, thisWidth - barwidth, VBarHeight - barwidth, barwidth, barwidth);
                //滚动块
                g.setColor(backColor);
                fillRect(g, thisWidth - barwidth, barwidth, barwidth, VBarHeight - 2 * barwidth);
                g.setColor(getBorderColor());
                drawRect(g, thisWidth - barwidth, barwidth, barwidth, VBarHeight - 2 * barwidth);
                //块大小                    
                int pheight = VBarHeight - 2 * barwidth;
                if (maxHeight > VBarHeight) {
                    pheight = ((VBarHeight) * (VBarHeight - 2 * barwidth) / maxHeight);
                }
                //计算块位置
                int ppos = barwidth;
                if (maxHeight > 0) {
                    ppos = (startTop * (VBarHeight - 2 * barwidth)) / maxHeight;
                }
                //修正位置
                if (ppos + pheight > VBarHeight - 2 * barwidth) {
                    ppos = VBarHeight - 2 * barwidth - pheight;
                }
                //画块
                g.setColor(scrollBarColor);
                fillRect(g, thisWidth - barwidth, barwidth + ppos, barwidth, pheight);
                g.setColor(getBorderColor());
                drawRect(g, thisWidth - barwidth, barwidth + ppos, barwidth, pheight);
                //记录大小
                VSLeft = thisWidth - barwidth;
                VSTop = barwidth + ppos;
                VSWidth = barwidth;
                VSHeight = pheight;
                //画块上的线
                int tpos = VSHeight / 2 + VSTop;
                drawRect(g, VSLeft + 2, tpos, barwidth - 4, 0);
                if (tpos - 2 > VSTop) {
                    drawRect(g, VSLeft + 2, tpos - 2, VSWidth - 4, 0);
                }
                if (tpos + 2 < VSTop + VSHeight) {
                    drawRect(g, VSLeft + 2, tpos + 2, VSWidth - 4, 0);
                }
                //三角
                g.setColor(getBorderColor());
                fillTriangle(g, thisWidth - barwidth + barwidth / 2, barwidth / 2 - 2,
                        thisWidth - barwidth + barwidth / 2 - 4, barwidth / 2 + 2,
                        thisWidth - barwidth + barwidth / 2 + 4, barwidth / 2 + 2);
                fillTriangle(g, thisWidth - barwidth + barwidth / 2 - 4, VBarHeight - barwidth + barwidth / 2 - 2,
                        thisWidth - barwidth + barwidth / 2 + 4, VBarHeight - barwidth + barwidth / 2 - 2,
                        thisWidth - barwidth + barwidth / 2, VBarHeight - barwidth / 2 + 2);
            }
            PaintChilds();
        }