javaswing圓角邊框

Ⅰ extjs的panel組件怎麼使用

//html代碼
<div id="container">
</div>

//js代碼
var p = new Ext.Panel({
title: 'My Panel',//標題
collapsible:true,//右上角上的那個收縮按鈕，設為false則不顯示
renderTo: 'container',//這個panel顯示在html中id為container的層中
width:400,
height:200,
html: "<p>我是內容，我包含的html可以被執行！</p>"//panel主體中的內容，可以執行html代碼
});

因為panel組件的子類組件包括TabPanel,GridPanel,FormPanel,TreePanel組件，所以非常有必要介紹Panel組件的配置參數和相關的屬性、方法。

//配置參數(只列舉部分常用參數)
1.autoLoad：有效的url字元串，把那個url中的body中的數據載入顯示，但是可能沒有樣式和js控制，只是html數據
2.autoScroll:設為true則內容溢出的時候產生滾動條，默認為false
3.autoShow:設為true顯示設為"x-hidden"的元素，很有必要，默認為false

4.bbar:底部條，顯示在主體內，//代碼：bbar:[{text:'底部工具欄bottomToolbar'}],
5.tbar:頂部條，顯示在主體內，//代碼:tbar:[{text:'頂部工具欄topToolbar'}],
6.buttons:按鈕集合，自動添加到footer中（footer參數，顯示在主體外）//代碼：buttons:[{text:"按鈕位於footer"}]
7.buttonAlign:footer中按鈕的位置，枚舉值為："left","right","center",默認為right

8.collapsible：設為true，顯示右上角的收縮按鈕，默認為false
9.draggable:true則可拖動，但需要你提供操作過程，默認為false

10.html:主體的內容
11.id：id值，通過id可以找到這個組件，建議一般加上這個id值
12.width：寬度
13.height：高度
13.title:標題

14.titleCollapse：設為true，則點擊標題欄的任何地方都能收縮，默認為false.

15.applyTo：（id）呈現在哪個html元素裡面
16.contentEl：（id）呈現哪個html元素裡面，把el內的內容呈現
17.renderTo：（id）呈現在哪個html元素裡面
//關於這三個參數的區別(個人認為：applyTo和RenderTo強調to到html元素中，contentEl則是html元素到ext組件中去)：
英文如下（本人英語poor，不敢亂翻譯）：
contentEl - This config option is used to take existing content and place it in the body of a new panel. It is not going to be the actual panel itself. (It will actually the innerHTML of the el and use it for the body). You should add either the x-hidden or the x-hide-display CSS class to prevent a brief flicker of the content before it is rendered to the panel.
applyTo - This config option allows you to use pre-defined markup to create an entire Panel. By entire, I mean you can include the header, tbar, body, footer, etc. These elements must be in the correct order/hierarchy. Any components which are not found and need to be created will be autogenerated.
renderTo - This config option allows you to render a Panel as its created. This would be the same as saying myPanel.render(ELEMENT_TO_RENDER_TO);
哪位大人幫忙翻譯下...
考慮到入門，方法事件會在以後的文章中以實例穿插。
1.可拖動的panel實例
下面我們做個可拖動panel例子來熟悉下panel這個最基本的組件.

//html代碼
..無..

//下面創建一個允許拖動的panel，但是拖動的結果不能保存
var p=new Ext.Panel({
title: 'Drag me',
x: 100,
y: 100,
renderTo: Ext.getBody(),//x,y,renderTo:Ext.getBody()初始化panel的位置
floating: true,//true
frame: true,//圓角邊框
width: 400,
height: 200,
draggable:true
}).show();//在這里也可以不show（）
但是還不能拖到其他的地方，我們需要改寫draggable：

draggable: {
insertProxy: false,//拖動時不虛線顯示原始位置

onDrag : function(e){
var pel = this.proxy.getEl();
this.x = pel.getLeft(true);
this.y = pel.getTop(true);//獲取拖動時panel的坐標
},
endDrag :

function(e){
this.panel.setPosition(this.x, this.y);//移動到最終位置
}
}
實現了可保存的拖動

拖動的時候陰影還在原位置，我們再在draggable中的onDrag事件中添加代碼：

var s = this.panel.getEl().shadow;
if (s) {
s.realign(this.x, this.y, pel.getWidth(), pel.getHeight());
}
//shadow的realign方法的四個參數，改變shadow的位置大小屬性
最後這個可拖動的panel的代碼為：

var p=new Ext.Panel({
title: 'Drag me',
x: 100,
y: 100,
renderTo: Ext.getBody(),
floating: true,
frame: true,
width: 400,
height: 200,
draggable: {
insertProxy: false,
onDrag :

function(e){
var pel = this.proxy.getEl();
this.x = pel.getLeft(true);
this.y = pel.getTop(true);

var s = this.panel.getEl().shadow;
if (s) {
s.realign(this.x, this.y, pel.getWidth(), pel.getHeight());
}
},
endDrag : function(e){
this.panel.setPosition(this.x, this.y);
}
}
})
//效果圖片我就不貼出來了
2.帶頂部，底部，腳部工具欄的panel

var p=new Ext.Panel({
id:"panel1",
title:"標題",
collapsible:true,
renderTo:"container",
closable:true,
width:400,
height:300,
tbar:[{text:"按鈕1"},{text:"按鈕2"}], //頂部工具欄
bbar:[{text:"按鈕1"},{text:"按鈕2"}], //底部工具欄
html:"內容",
buttons:[{text:"按鈕1"},{text:"按鈕2"}] //footer部工具欄
});

我們已經在各種工具欄上添加了按鈕，但是卻沒有激發事件，下面我們來添加按鈕事件代碼：

tbar:[{text:"按鈕1",handler:function(){Ext.MessageBox.alert("我是按鈕1","我是通過按鈕1激發出來的彈出框！")}},{text:"按鈕2"}],
//改寫tbar，添加handler句柄，點擊頂部工具欄上按鈕1，彈出提示框，效果圖大家想像下，就不貼出來了
當然，一般情況下，我們只要一個工具欄，這里只是為了演示！
3.panel工具欄

//添加下面的代碼到panel配置參數中
tools:[{id:"save"},{id:"help"},{id:"up"},{id:"close",handler:function(){Ext.MessageBox.alert("工具欄按鈕","工具欄上的關閉按鈕時間被激發了")}}],
//id控制按鈕，handler控制相應的事件
//id的枚舉值為：
toggle (collapsable為true時的默認值)
close
minimize
maximize
restore
gear
pin
unpin
right
left
up
down
refresh
minus
plus
help
search
save
print

Ⅱ java swing 怎麼繪制一個圓角矩形的面板

設置一個圓角矩形的Border即可。

panel.setBorder(BorderFactory.createLineBorder(Color.RED,10,true));

Ⅲ JAVA實現簡單的畫圖板

樓主寫一個html，很容易把下面代碼嵌入到applet，可以google一下實現，
還有自己不知道算不算復制。。。-_-!
--------------------------------------------------------------------
樓主給你一個我的，直接保存成pb.java編譯運行，就是你要的畫圖功能 ，可以參考一下
____________________________________________________________________

import java.applet.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
import java.awt.geom.*;
import java.io.*;

class Point implements Serializable
{
int x,y;
Color col;
int tool;
int boarder;

Point(int x, int y, Color col, int tool, int boarder)
{
this.x = x;
this.y = y;
this.col = col;
this.tool = tool;
this.boarder = boarder;
}
}

class paintboard extends Frame implements ActionListener,MouseMotionListener,MouseListener,ItemListener
{
int x = -1, y = -1;
int con = 1;//畫筆大小
int Econ = 5;//橡皮大小

int toolFlag = 0;//toolFlag:工具標記
//toolFlag工具對應表：
//（0--畫筆）；（1--橡皮）；（2--清除）；
//（3--直線）；（4--圓）；（5--矩形）；

Color c = new Color(0,0,0); //畫筆顏色
BasicStroke size = new BasicStroke(con,BasicStroke.CAP_BUTT,BasicStroke.JOIN_BEVEL);//畫筆粗細
Point cutflag = new Point(-1, -1, c, 6, con);//截斷標志

Vector paintInfo = null;//點信息向量組
int n = 1;

FileInputStream picIn = null;
FileOutputStream picOut = null;

ObjectInputStream VIn = null;
ObjectOutputStream VOut = null;

// *工具面板--畫筆，直線，圓，矩形，多邊形,橡皮，清除*/
Panel toolPanel;
Button eraser, drLine,drCircle,drRect;
Button clear ,pen;
Choice ColChoice,SizeChoice,EraserChoice;
Button colchooser;
Label 顏色,大小B,大小E;
//保存功能
Button openPic,savePic;
FileDialog openPicture,savePicture;

paintboard(String s)
{
super(s);
addMouseMotionListener(this);
addMouseListener(this);

paintInfo = new Vector();

/*各工具按鈕及選擇項*/
//顏色選擇
ColChoice = new Choice();
ColChoice.add("black");
ColChoice.add("red");
ColChoice.add("blue");
ColChoice.add("green");
ColChoice.addItemListener(this);
//畫筆大小選擇
SizeChoice = new Choice();
SizeChoice.add("1");
SizeChoice.add("3");
SizeChoice.add("5");
SizeChoice.add("7");
SizeChoice.add("9");
SizeChoice.addItemListener(this);
//橡皮大小選擇
EraserChoice = new Choice();
EraserChoice.add("5");
EraserChoice.add("9");
EraserChoice.add("13");
EraserChoice.add("17");
EraserChoice.addItemListener(this);
////////////////////////////////////////////////////
toolPanel = new Panel();

clear = new Button("清除");
eraser = new Button("橡皮");
pen = new Button("畫筆");
drLine = new Button("畫直線");
drCircle = new Button("畫圓形");
drRect = new Button("畫矩形");

openPic = new Button("打開圖畫");
savePic = new Button("保存圖畫");

colchooser = new Button("顯示調色板");

//各組件事件監聽
clear.addActionListener(this);
eraser.addActionListener(this);
pen.addActionListener(this);
drLine.addActionListener(this);
drCircle.addActionListener(this);
drRect.addActionListener(this);
openPic.addActionListener(this);
savePic.addActionListener(this);
colchooser.addActionListener(this);

顏色 = new Label("畫筆顏色",Label.CENTER);
大小B = new Label("畫筆大小",Label.CENTER);
大小E = new Label("橡皮大小",Label.CENTER);
//面板添加組件
toolPanel.add(openPic);
toolPanel.add(savePic);

toolPanel.add(pen);
toolPanel.add(drLine);
toolPanel.add(drCircle);
toolPanel.add(drRect);

toolPanel.add(顏色); toolPanel.add(ColChoice);
toolPanel.add(大小B); toolPanel.add(SizeChoice);
toolPanel.add(colchooser);

toolPanel.add(eraser);
toolPanel.add(大小E); toolPanel.add(EraserChoice);

toolPanel.add(clear);
//工具面板到APPLET面板
add(toolPanel,BorderLayout.NORTH);

setBounds(60,60,900,600); setVisible(true);
validate();
//dialog for save and load

openPicture = new FileDialog(this,"打開圖畫",FileDialog.LOAD);
openPicture.setVisible(false);
savePicture = new FileDialog(this,"保存圖畫",FileDialog.SAVE);
savePicture.setVisible(false);

openPicture.addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{ openPicture.setVisible(false); }
});

savePicture.addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{ savePicture.setVisible(false); }
});

addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{ System.exit(0);}
});

}

public void paint(Graphics g)
{
Graphics2D g2d = (Graphics2D)g;

Point p1,p2;

n = paintInfo.size();

if(toolFlag==2)
g.clearRect(0,0,getSize().width,getSize().height);//清除

for(int i=0; i<n ;i++){
p1 = (Point)paintInfo.elementAt(i);
p2 = (Point)paintInfo.elementAt(i+1);
size = new BasicStroke(p1.boarder,BasicStroke.CAP_BUTT,BasicStroke.JOIN_BEVEL);

g2d.setColor(p1.col);
g2d.setStroke(size);

if(p1.tool==p2.tool)
{
switch(p1.tool)
{
case 0://畫筆

Line2D line1 = new Line2D.Double(p1.x, p1.y, p2.x, p2.y);
g2d.draw(line1);
break;

case 1://橡皮
g.clearRect(p1.x, p1.y, p1.boarder, p1.boarder);
break;

case 3://畫直線
Line2D line2 = new Line2D.Double(p1.x, p1.y, p2.x, p2.y);
g2d.draw(line2);
break;

case 4://畫圓
Ellipse2D ellipse = new Ellipse2D.Double(p1.x, p1.y, Math.abs(p2.x-p1.x) , Math.abs(p2.y-p1.y));
g2d.draw(ellipse);
break;

case 5://畫矩形
Rectangle2D rect = new Rectangle2D.Double(p1.x, p1.y, Math.abs(p2.x-p1.x) , Math.abs(p2.y-p1.y));
g2d.draw(rect);
break;

case 6://截斷，跳過
i=i+1;
break;

default :
}//end switch
}//end if
}//end for
}

public void itemStateChanged(ItemEvent e)
{
if(e.getSource()==ColChoice)//預選顏色
{
String name = ColChoice.getSelectedItem();

if(name=="black")
{c = new Color(0,0,0); }
else if(name=="red")
{c = new Color(255,0,0);}
else if(name=="green")
{c = new Color(0,255,0);}
else if(name=="blue")
{c = new Color(0,0,255);}
}
else if(e.getSource()==SizeChoice)//畫筆大小
{
String selected = SizeChoice.getSelectedItem();

if(selected=="1")
{
con = 1;
size = new BasicStroke(con,BasicStroke.CAP_BUTT,BasicStroke.JOIN_BEVEL);

}
else if(selected=="3")
{
con = 3;
size = new BasicStroke(con,BasicStroke.CAP_BUTT,BasicStroke.JOIN_BEVEL);

}
else if(selected=="5")
{con = 5;
size = new BasicStroke(con,BasicStroke.CAP_BUTT,BasicStroke.JOIN_BEVEL);

}
else if(selected=="7")
{con = 7;
size = new BasicStroke(con,BasicStroke.CAP_BUTT,BasicStroke.JOIN_BEVEL);

}
else if(selected=="9")
{con = 9;
size = new BasicStroke(con,BasicStroke.CAP_BUTT,BasicStroke.JOIN_BEVEL);

}
}
else if(e.getSource()==EraserChoice)//橡皮大小
{
String Esize = EraserChoice.getSelectedItem();

if(Esize=="5")
{ Econ = 5*2; }
else if(Esize=="9")
{ Econ = 9*2; }
else if(Esize=="13")
{ Econ = 13*2; }
else if(Esize=="17")
{ Econ = 17*3; }

}

}

public void mouseDragged(MouseEvent e)
{
Point p1 ;
switch(toolFlag){
case 0://畫筆
x = (int)e.getX();
y = (int)e.getY();
p1 = new Point(x, y, c, toolFlag, con);
paintInfo.addElement(p1);
repaint();
break;

case 1://橡皮
x = (int)e.getX();
y = (int)e.getY();
p1 = new Point(x, y, null, toolFlag, Econ);
paintInfo.addElement(p1);
repaint();
break;

default :
}
}

public void mouseMoved(MouseEvent e) {}

public void update(Graphics g)
{
paint(g);
}

public void mousePressed(MouseEvent e)
{
Point p2;
switch(toolFlag){
case 3://直線
x = (int)e.getX();
y = (int)e.getY();
p2 = new Point(x, y, c, toolFlag, con);
paintInfo.addElement(p2);
break;

case 4: //圓
x = (int)e.getX();
y = (int)e.getY();
p2 = new Point(x, y, c, toolFlag, con);
paintInfo.addElement(p2);
break;

case 5: //矩形
x = (int)e.getX();
y = (int)e.getY();
p2 = new Point(x, y, c, toolFlag, con);
paintInfo.addElement(p2);
break;

default :
}
}

public void mouseReleased(MouseEvent e)
{
Point p3;
switch(toolFlag){
case 0://畫筆
paintInfo.addElement(cutflag);
break;

case 1: //eraser
paintInfo.addElement(cutflag);
break;

case 3://直線
x = (int)e.getX();
y = (int)e.getY();
p3 = new Point(x, y, c, toolFlag, con);
paintInfo.addElement(p3);
paintInfo.addElement(cutflag);
repaint();
break;

case 4: //圓
x = (int)e.getX();
y = (int)e.getY();
p3 = new Point(x, y, c, toolFlag, con);
paintInfo.addElement(p3);
paintInfo.addElement(cutflag);
repaint();
break;

case 5: //矩形
x = (int)e.getX();
y = (int)e.getY();
p3 = new Point(x, y, c, toolFlag, con);
paintInfo.addElement(p3);
paintInfo.addElement(cutflag);
repaint();
break;

default:
}
}

public void mouseEntered(MouseEvent e){}

public void mouseExited(MouseEvent e){}

public void mouseClicked(MouseEvent e){}

public void actionPerformed(ActionEvent e)
{

if(e.getSource()==pen)//畫筆
{toolFlag = 0;}

if(e.getSource()==eraser)//橡皮
{toolFlag = 1;}

if(e.getSource()==clear)//清除
{
toolFlag = 2;
paintInfo.removeAllElements();
repaint();
}

if(e.getSource()==drLine)//畫線
{toolFlag = 3;}

if(e.getSource()==drCircle)//畫圓
{toolFlag = 4;}

if(e.getSource()==drRect)//畫矩形
{toolFlag = 5;}

if(e.getSource()==colchooser)//調色板
{
Color newColor = JColorChooser.showDialog(this,"調色板",c);
c = newColor;
}

if(e.getSource()==openPic)//打開圖畫
{

openPicture.setVisible(true);

if(openPicture.getFile()!=null)
{
int tempflag;
tempflag = toolFlag;
toolFlag = 2 ;
repaint();

try{
paintInfo.removeAllElements();
File filein = new File(openPicture.getDirectory(),openPicture.getFile());
picIn = new FileInputStream(filein);
VIn = new ObjectInputStream(picIn);
paintInfo = (Vector)VIn.readObject();
VIn.close();
repaint();
toolFlag = tempflag;

}

catch(ClassNotFoundException IOe2)
{
repaint();
toolFlag = tempflag;
System.out.println("can not read object");
}
catch(IOException IOe)
{
repaint();
toolFlag = tempflag;
System.out.println("can not read file");
}
}

}

if(e.getSource()==savePic)//保存圖畫
{
savePicture.setVisible(true);
try{
File fileout = new File(savePicture.getDirectory(),savePicture.getFile());
picOut = new FileOutputStream(fileout);
VOut = new ObjectOutputStream(picOut);
VOut.writeObject(paintInfo);
VOut.close();
}
catch(IOException IOe)
{
System.out.println("can not write object");
}

}
}
}//end paintboard

public class pb
{
public static void main(String args[])
{ new paintboard("畫圖程序"); }
}

Ⅳ Swing Jpanel實現圓角的問題

finalShapeshape=newRoundRectangle2D.Double(0d,0d,f.getWidth(),f.getHeight(),50,50);

f.addComponentListener(newComponentAdapter()
{

	publicvoidcomponentResized(ComponentEvente)
	{
		f.setShape(shape);
	}
});

上面這個能讓 JFrame 確實是圓角且透明，但不知為何這個 JPanel 的邊框繪制時依然不正確。