Java 在netbeans中使用JSlider缩放jPanel
我想使用滑块缩放Jpanel。 我有一些圆圈淹没在我的jpanel中(我将对它们进行编码,以便稍后移动) 我遇到的问题是缩放按钮,我已经在这里使用了答案: 但这并不是我想要的。 我正在使用netbeans gui builder,请帮助我,谢谢:)Java 在netbeans中使用JSlider缩放jPanel,java,swing,jpanel,zooming,jslider,Java,Swing,Jpanel,Zooming,Jslider,我想使用滑块缩放Jpanel。 我有一些圆圈淹没在我的jpanel中(我将对它们进行编码,以便稍后移动) 我遇到的问题是缩放按钮,我已经在这里使用了答案: 但这并不是我想要的。 我正在使用netbeans gui builder,请帮助我,谢谢:) /* *要更改此许可证标题,请在“项目属性”中选择“许可证标题”。 *要更改此模板文件,请选择工具|模板 *然后在编辑器中打开模板。 */ 包javaapplication13; 导入java.awt.Dimension; 导入java.awt.Gr
/*
*要更改此许可证标题,请在“项目属性”中选择“许可证标题”。
*要更改此模板文件,请选择工具|模板
*然后在编辑器中打开模板。
*/
包javaapplication13;
导入java.awt.Dimension;
导入java.awt.Graphics;
导入java.awt.Graphics2D;
公共类NewJFrame扩展了javax.swing.JFrame{
/**
*创建新表单NewJFrame
*/
公共NewJFrame(){
初始化组件();
}
/**
*从构造函数中调用此方法来初始化表单。
*警告:不要修改此代码。此方法的内容始终为
*由表单编辑器重新生成。
*/
@抑制警告(“未选中”)
//
私有组件(){
jSlider1=newjavax.swing.JSlider();
jScrollPane1=newjavax.swing.JScrollPane();
jPanel1=newjavax.swing.JPanel(){
受保护组件(图形g)
{
Graphics2D g2=(Graphics2D)g.create();
超级组件(g);
int w=getWidth();//画布的实际宽度
int h=getHeight();//画布的实际高度
//平移用于确保比例居中
g2.翻译(w/2,h/2);
g2.scale((双精度)jSlider1.getValue(),(双精度)jSlider1.getValue();
g2.平移(-w/2,-h/2);
g2.椭圆形(200,200,25,25);
g2.椭圆形(20022325);
g2.椭圆形(15022325);
g2.椭圆形(100200,25,25);
//重新绘制();cpu使用过多。
}
};
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jSlider1.setMinimum(1);
jSlider1.setValue(1);
jSlider1.addChangeListener(新的javax.swing.event.ChangeListener(){
public void stateChanged(javax.swing.event.ChangeEvent evt){
jSlider1StateChanged(evt);
}
});
jScrollPane1.setPreferredSize(新维度((jSlider1.getValue()*5),(jSlider1.getValue()*10));
setBackground(新java.awt.Color(255、255、255));
javax.swing.GroupLayout jPanel1Layout=新的javax.swing.GroupLayout(jPanel1);
setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0,0,短.MAX_值)
);
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0,0,短.MAX_值)
);
jScrollPane1.setViewportView(jPanel1);
javax.swing.GroupLayout=newjavax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(布局);
layout.setHorizontalGroup(
createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jSlider1,javax.swing.GroupLayout.DEFAULT\u SIZE,238,Short.MAX\u值)
.addComponent(jScrollPane1,javax.swing.GroupLayout.DEFAULT\u SIZE,javax.swing.GroupLayout.DEFAULT\u SIZE,Short.MAX\u VALUE))
.addContainerGap())
);
layout.setVerticalGroup(
createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(jSlider1,javax.swing.GroupLayout.PREFERRED\u SIZE,javax.swing.GroupLayout.DEFAULT\u SIZE,javax.swing.GroupLayout.PREFERRED\u SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jScrollPane1,javax.swing.GroupLayout.DEFAULT\u SIZE,317,Short.MAX\u值)
.addContainerGap())
);
包装();
}//
私有void jSlider1StateChanged(javax.swing.event.ChangeEvent evt){
jPanel1.repaint();
}
/**
*@param指定命令行参数
*/
公共静态void main(字符串参数[]){
/*设置Nimbus的外观和感觉*/
//
/*如果Nimbus(在JavaSE6中引入)不可用,请使用默认的外观。
*详情请参阅http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
试一试{
for(javax.swing.UIManager.LookAndFeelInfo:javax.swing.UIManager.getInstalledLookAndFeels()){
if(“Nimbus”.equals(info.getName())){
setLookAndFeel(info.getClassName());
打破
}
}
}捕获(ClassNotFoundException ex){
getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE,null,ex);
}catch(实例化异常){
getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE,null,ex);
}捕获(非法访问例外){
getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE,null,ex);
}catch(javax.swing.UnsupportedLookAndFeelException ex){
getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE,null,ex);
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package javaapplication13;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
public class NewJFrame extends javax.swing.JFrame {
/**
* Creates new form NewJFrame
*/
public NewJFrame() {
initComponents();
}
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jSlider1 = new javax.swing.JSlider();
jScrollPane1 = new javax.swing.JScrollPane();
jPanel1 = new javax.swing.JPanel(){
protected void paintComponent(Graphics g)
{
Graphics2D g2 = (Graphics2D) g.create();
super.paintComponent(g);
int w =getWidth(); // real width of canvas
int h =getHeight(); // real height of canvas
// Translate used to make sure scale is centered
g2.translate(w/2, h/2);
g2.scale((double)jSlider1.getValue(),(double)jSlider1.getValue());
g2.translate(-w/2, -h/2);
g2.fillOval(200, 200, 25, 25);
g2.fillOval(200, 223, 25, 25);
g2.fillOval(150, 223, 25, 25);
g2.fillOval(100, 200, 25, 25);
//repaint(); too much cpu use.
}
};
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jSlider1.setMinimum(1);
jSlider1.setValue(1);
jSlider1.addChangeListener(new javax.swing.event.ChangeListener() {
public void stateChanged(javax.swing.event.ChangeEvent evt) {
jSlider1StateChanged(evt);
}
});
jScrollPane1.setPreferredSize(new Dimension((jSlider1.getValue()*5),(jSlider1.getValue()*10)));
jPanel1.setBackground(new java.awt.Color(255, 255, 255));
javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 0, Short.MAX_VALUE)
);
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 0, Short.MAX_VALUE)
);
jScrollPane1.setViewportView(jPanel1);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jSlider1, javax.swing.GroupLayout.DEFAULT_SIZE, 238, Short.MAX_VALUE)
.addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addContainerGap())
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(jSlider1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 317, Short.MAX_VALUE)
.addContainerGap())
);
pack();
}// </editor-fold>
private void jSlider1StateChanged(javax.swing.event.ChangeEvent evt) {
jPanel1.repaint();
}
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new NewJFrame().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JPanel jPanel1;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JSlider jSlider1;
// End of variables declaration
}
jSlider1.addChangeListener(new ChangeListener() {
public void stateChanged(ChangeEvent arg0) {
jPanel1.repaint();
}
});