java实现仿windows 字体设置选项卡实例

想用java做一个像windows里一样的txt编辑软件，涉及到字体设置选项卡，在网上找了很久都没找到，就生气啦自己写一个，现在贴这里分享一下，下次再遇到这样的问题就不用自己亲自打代码啦！

package 实验;
import java.awt.*;
import java.awt.event.actionevent;
import java.awt.event.actionlistener;
import java.awt.event.mouseadapter;
import java.awt.event.mouseevent;
import javax.swing.*;
import javax.swing.border.bevelborder;

/**
 * 字体格式设置对话框
 */

public class fontformat extends jdialog {

  private jlabel namelb;
  private jlabel stylelb;
  private jlabel sizelb;
  private jlabel preslb;
  private jtextfield nametx;
  private jtextfield styletx;
  private jtextfield sizetx;
  private jtextfield prestx;
  private jlist namelt;
  private jlist stylelt;
  private jlist sizelt;
  private jscrollpane jscrollpane1;
  private jscrollpane jscrollpane2;
  private jscrollpane jscrollpane3;
  private jbutton approve;
  private jbutton cancel;
  private jbutton chose;
  private jradiobutton[] language = new jradiobutton[2];
  private buttongroup languageg;
  private string slanguage[] = { new string("李涛"), new string("abc") };

  private static jframe frame;
  public font font, newfont;// 字体类
  private color color;// 颜色类
  color newcolor;

  private jfilechooser filechoose = new jfilechooser();// 文件选择类实例
  private jdialog colordlg;// 颜色对话框
  private jcolorchooser colorchoose = new jcolorchooser();// 颜色选择类实例

  private graphicsenvironment environment; // 该类中又获取系统字体的方法；
  private string[] fontnameset;// 字体‘逻辑名'集
  // 字体‘样式'集的字符串数组
  private string[] fontstyleset = { "常规", "倾斜", "加粗", "倾斜 加粗" };
  // 字体‘样式'集的常量数组
  private integer[] fontcon = { font.plain, font.italic, font.bold,
      font.bold | font.italic };
  // 字体‘大小'集
  private string[] fontsizeset = { "6", "7", "8", "9", "10", "11", "12",
      "14", "16", "18", "20", "22", "24", "26", "28", "36", "48", "72" };

  public static void main(string args[]) {// 主函数
    fontformat a = new fontformat();
    a.setvisible(true);
  }

  public fontformat() {// 无参构造函数
    super(frame, "李涛—字体设置窗口", true);
    frame = new jframe();
    initgui();
  }

  public fontformat(jframe frame) {// 含参构造函数
    super(frame, "李涛—字体设置窗口", true);
    this.frame = frame;// 父窗口中必须有一个public的font对象
    // setalwaysontop(true);
    initgui();
  }

  private void initgui() {// 字体格式选择器的界面初始化
    try {
      getcontentpane().setlayout(null);
      environment = graphicsenvironment.getlocalgraphicsenvironment();// graphicsenvironment是一个抽象类，不能实例化，只能用其中的静态方法获取一个实例
      fontnameset = environment.getavailablefontfamilynames();// 获取系统字体
      addmenu();// 加入菜单
      initfont();// 初始化字体
      // pack();
      setsize(380, 337);
      setdefaultcloseoperation(windowconstants.dispose_on_close);
      setwindowpos();// 使窗口屏幕居中
      setresizable(false);// 大小不可变
    } catch (exception e) {
      e.printstacktrace();
    }
  }

  private void initfont() {// 初始化字体
    // 设置默认字体格式为父窗口font对向的字体格式
    if (frame.getfont() == null) {
      nametx.settext(fontnameset[0]);
      styletx.settext(fontstyleset[0]);
      sizetx.settext("12");
      namelt.setselectedvalue(fontnameset[0], true);
      stylelt.setselectedindex(0);
      sizelt.setselectedvalue("12", true);
      font = new font(fontnameset[0], fontcon[0], 12);
      newfont = font;// 保存原来的字体格式
      prestx.setfont(font);
      // joptionpane.showmessagedialog(null, "ccac");
    } else {
      int idxstyle = 0;
      for (int i = 0; i < fontcon.length; i++) {
        if (fontcon[i] == frame.getfont().getstyle())
          idxstyle = i;
      }
      nametx.settext(frame.getfont().getname());// 改text
      styletx.settext(fontstyleset[idxstyle]);
      sizetx.settext("" + frame.getfont().getsize());
      namelt.setselectedvalue(frame.getfont().getname(), true);// 改list显示
      stylelt.setselectedindex(idxstyle);
      sizelt.setselectedvalue("" + frame.getfont().getsize(), true);
      font = new font(fontnameset[0], fontcon[0], 12);// 保存当前格式
      newfont = font;// 保存原来的字体格式
      prestx.setfont(font);// 预览中设为当前模式
    }
  }

  private void addmenu() {// 加入菜单
    // 4个lable---------------------------------------------------------------------------------
    namelb = new jlabel();
    getcontentpane().add(namelb);
    namelb.settext("字体：");
    namelb.setbounds(10, 14, 120, 26);
    namelb.setfont(new java.awt.font("simsun", 1, 14));

    stylelb = new jlabel();
    getcontentpane().add(stylelb);
    stylelb.settext("字型：");
    stylelb.setbounds(151, 14, 120, 23);
    stylelb.setfont(new java.awt.font("simsun", 1, 14));

    sizelb = new jlabel();
    getcontentpane().add(sizelb);
    sizelb.settext("大小：");
    sizelb.setbounds(275, 14, 79, 24);
    sizelb.setfont(new java.awt.font("simsun", 1, 14));

    preslb = new jlabel();
    getcontentpane().add(preslb);
    preslb.settext("预览：");
    preslb.setbounds(151, 150, 120, 80);
    preslb.setfont(new java.awt.font("simsun", 1, 14));

    // 4个textfield---------------------------------------------------------------------------------
    nametx = new jtextfield();
    nametx.seteditable(false);
    getcontentpane().add(nametx);
    nametx.setbounds(10, 42, 120, 22);

    styletx = new jtextfield();
    styletx.seteditable(false);
    getcontentpane().add(styletx);
    styletx.setbounds(151, 42, 100, 21);

    sizetx = new jtextfield();
    sizetx.seteditable(false);
    getcontentpane().add(sizetx);
    sizetx.setbounds(275, 42, 79, 22);

    prestx = new jtextfield();
    prestx.seteditable(false);
    getcontentpane().add(prestx);
    prestx.setbounds(151, 200, 203, 61);
    prestx.settext(slanguage[1]);

    // 3个下拉条--+监听-----------------------------------------------------------------------------
    jscrollpane1 = new jscrollpane();
    getcontentpane().add(jscrollpane1);
    jscrollpane1.setbounds(10, 74, 120, 210);
    {
      listmodel fontnamemodel = new defaultcomboboxmodel(fontnameset);
      namelt = new jlist();
      jscrollpane1.setviewportview(namelt);
      namelt.setmodel(fontnamemodel);
      namelt.setbounds(274, 193, 90, 86);
      namelt.setborder(borderfactory
          .createetchedborder(bevelborder.lowered));
      namelt.addmouselistener(new mouseadapter() {
        public void mouseclicked(mouseevent evt) {
          nameltmouseclicked(evt);
        }
      });
    }

    jscrollpane2 = new jscrollpane();
    getcontentpane().add(jscrollpane2);
    jscrollpane2.setbounds(151, 74, 100, 103);
    {
      listmodel fontstylemodel = new defaultcomboboxmodel(fontstyleset);
      stylelt = new jlist();
      jscrollpane2.setviewportview(stylelt);
      stylelt.setmodel(fontstylemodel);
      stylelt.setbounds(310, 215, 70, 102);
      stylelt.setborder(borderfactory
          .createetchedborder(bevelborder.lowered));
      stylelt.addmouselistener(new mouseadapter() {
        public void mouseclicked(mouseevent evt) {
          styleltmouseclicked(evt);
        }
      });
    }

    jscrollpane3 = new jscrollpane();
    getcontentpane().add(jscrollpane3);
    jscrollpane3.setbounds(275, 75, 79, 100);
    {
      listmodel fontsizemodel = new defaultcomboboxmodel(fontsizeset);
      sizelt = new jlist();
      jscrollpane3.setviewportview(sizelt);
      sizelt.setmodel(fontsizemodel);
      sizelt.setbounds(300, 218, 54, 102);
      sizelt.setborder(borderfactory
          .createetchedborder(bevelborder.lowered));
      sizelt.addmouselistener(new mouseadapter() {
        public void mouseclicked(mouseevent evt) {
          sizeltmouseclicked(evt);
        }
      });
    }// -------------------------------------------------------------------------------------

    // 中英选项(---------------------------------------------------------------------------------
    languageg = new buttongroup();
    language[0] = new jradiobutton("中");
    getcontentpane().add(language[0]);
    language[0].setselected(false);// 初始化显示
    language[0].setbounds(271, 179, 40, 20);
    language[0].setfont(new java.awt.font("simsun", 1, 12));
    languageg.add(language[0]);
    language[0].addactionlistener(new actionlistener() {
      public void actionperformed(actionevent evt) {
        prestx.settext(slanguage[0]);
      }
    });

    language[1] = new jradiobutton("英");
    getcontentpane().add(language[1]);
    language[1].setselected(true);
    language[1].setbounds(321, 179, 40, 20);
    language[1].setfont(new java.awt.font("simsun", 1, 12));
    languageg.add(language[1]);
    language[1].addactionlistener(new actionlistener() {
      public void actionperformed(actionevent evt) {
        prestx.settext(slanguage[1]);
      }
    });

    // 3个按钮+监听---------------------------------------------------------------------------------
    // 确定按钮
    approve = new jbutton();
    getcontentpane().add(approve);
    approve.settext("确定");
    approve.setbounds(151, 265, 67, 20);
    approve.setfont(new java.awt.font("kaiti_gb2312", 1, 12));
    approve.addactionlistener(new actionlistener() {
      public void actionperformed(actionevent evt) {
        approveactionperformed(evt);
      }
    });

    // 取消按钮
    cancel = new jbutton();
    getcontentpane().add(cancel);
    cancel.settext("取消");
    cancel.setbounds(219, 265, 67, 20);
    cancel.setfont(new java.awt.font("kaiti_gb2312", 1, 12));
    cancel.addactionlistener(new actionlistener() {
      public void actionperformed(actionevent evt) {
        cancelactionperformed(evt);
      }
    });

    // 颜色选择按钮
    chose = new jbutton();
    getcontentpane().add(chose);
    chose.settext("颜色");
    chose.setbounds(287, 265, 67, 20);
    chose.setfont(new java.awt.font("kaiti_gb2312", 1, 12));
    chose.addactionlistener(new actionlistener() {
      public void actionperformed(actionevent evt) {
        choseactionperformed(evt);
      }
    });// -------------------------------------------------------------------------
  }

  private void setwindowpos() {// 窗口居中
    toolkit kit = toolkit.getdefaulttoolkit();// 抽象类，通过静态方法获取实例
    dimension framesize = new dimension(), screensize = kit.getscreensize(); // 获取屏幕的大小
    getsize(framesize); // 获取窗口大小
    setlocation((screensize.width - framesize.width) / 2,
        (screensize.height - framesize.height) / 2);
  }

  private void nameltmouseclicked(mouseevent evt) {// 字体逻辑名列表的鼠标单击事件
    nametx.settext(namelt.getselectedvalue().tostring());
    font = new font(nametx.gettext(), font.getstyle(), font.getsize());
    prestx.setfont(font);
  }

  private void styleltmouseclicked(mouseevent evt) {// 字体样式列表的鼠标单击事件
    string temp = stylelt.getselectedvalue().tostring();
    styletx.settext(temp);
    int index = 0;
    while (index < 4 && !fontstyleset[index].equals(temp)) {
      index++;
    }
    font = new font(font.getname(), fontcon[index], font.getsize());
    prestx.setfont(font);
  }

  private void sizeltmouseclicked(mouseevent evt) {// 字体大小列表的鼠标点击事件
    sizetx.settext(sizelt.getselectedvalue().tostring());
    font = new font(font.getname(), font.getstyle(),
        integer.parseint(sizetx.gettext()));
    prestx.setfont(font);
  }

  private void approveactionperformed(actionevent evt) {// 确定按钮的触发事件
    string name = nametx.gettext();
    int style = fontcon[stylelt.getselectedindex()];
    int size = integer.parseint(sizetx.gettext());
    font = new font(name, style, size);
    frame.setfont(font); // 父窗口的font对象
    newfont = font;// 更新原来保存格式
    newcolor = color;// 更新颜色
    this.dispose();
  }

  private void cancelactionperformed(actionevent evt) {// 取消按钮的触发事件
    this.dispose();
  }

  private void choseactionperformed(actionevent evt) {// 颜色选择触发事件
    if (colordlg == null) {
      colordlg = jcolorchooser.createdialog(fontformat.this,
          "select text color", true, colorchoose,
          new coloroklistener(), null);
    }
    colorchoose.setcolor(color = prestx.getforeground());
    colordlg.setvisible(true);
  }

  class coloroklistener implements actionlistener {// 重写颜色按钮点击监听类覆盖接口actionlistener
    public void actionperformed(actionevent e) {
      color c = colorchoose.getcolor();
      color = c;
      prestx.setforeground(c);
      prestx.repaint();
    }
  }
}

效果如下：

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