JSlider的滑道怎么控制颜色 现在我生成了一个0~254的JSlider,我想将它的0~100的滑道变为红色,提示用户这个区间无效,这个怎么实现,还有一个问题,怎么对JSlider进行缩放,setBounds只能控制它显示区域的大小,并没有缩放 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 JSliderpublic JSlider(int min, int max)Creates a horizontal slider using the specified min and max with an initial value equal to the average of the min plus max. 使用这个构造参数来避开0-100我觉得比较可行,修改颜色估计要去修改Lookandfell,比较麻烦,至于缩放的话,如果布局正确的话,会自动缩放的 1、如果0~100不会被使用,就不从0开始构造就可以了。2、如果需要,重写 SliderUI 实现。(如果需要的话,可以给你部分源码)3、不要使用setBounds函数设置绝对位置,设置相应的Layout,并且添加到相应的位置,由Layout控制界面进行缩放。 但是每个组件都会有最小的Size限制,缩到一定程度之后就不能正常全部显示了 gongfuliang 给我个重写SliderUI的实现吧,谢了,[email protected] import java.awt.BorderLayout;import java.awt.Color;import java.awt.Dimension;import java.awt.GradientPaint;import java.awt.Graphics;import java.awt.Graphics2D;import java.awt.Rectangle;import java.awt.RenderingHints;import javax.swing.Box;import javax.swing.JFrame;import javax.swing.JPanel;import javax.swing.JSlider;import javax.swing.WindowConstants;import javax.swing.plaf.basic.BasicSliderUI;/** * @author gongfl */public class ExampleSlider extends JPanel { private static final long serialVersionUID = 1L; public ExampleSlider() { JSlider slider = new JSlider(0, 100, 0); slider.setUI(new MySliderUI(slider)); slider.setMajorTickSpacing(10); slider.setMinorTickSpacing(5); slider.setPaintTicks(true); slider.setPaintLabels(true); Box box = Box.createVerticalBox(); box.add(Box.createVerticalStrut(5)); box.add(slider); box.add(Box.createVerticalGlue()); add(box, BorderLayout.CENTER); add(Box.createHorizontalStrut(5), BorderLayout.WEST); add(Box.createHorizontalStrut(5), BorderLayout.EAST); setPreferredSize(new Dimension(240, 100)); } public static void main(String[] args) { JFrame frame = new JFrame("Slider"); frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); frame.getContentPane().add(new ExampleSlider()); frame.setResizable(false); frame.pack(); frame.setLocationRelativeTo(null); frame.setVisible(true); }}class MySliderUI extends BasicSliderUI { public MySliderUI(JSlider b) { super(b); } public void paintThumb(Graphics g) { super.paintThumb(g); } public void paintTrack(Graphics g) { int cy, cw; Rectangle trackBounds = trackRect; if (slider.getOrientation() == JSlider.HORIZONTAL) { Graphics2D g2 = (Graphics2D) g; cy = (trackBounds.height / 2) - 2; cw = trackBounds.width; g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); g2.translate(trackBounds.x, trackBounds.y + cy); //背景颜色 g2.setPaint(Color.GRAY); g2.fillRect(0, -cy + 5, cw, cy); int trackLeft = 0; int trackRight = 0; trackRight = trackRect.width - 1; int middleOfThumb = 0; int fillLeft = 0; int fillRight = 0; // 坐标换算 middleOfThumb = thumbRect.x + (thumbRect.width / 2); middleOfThumb -= trackRect.x; if (!drawInverted()) { fillLeft = !slider.isEnabled() ? trackLeft : trackLeft + 1; fillRight = middleOfThumb; } else { fillLeft = middleOfThumb; fillRight = !slider.isEnabled() ? trackRight - 1 : trackRight - 2; } // 设定渐变 -滑过区域的颜色设置 g2.setPaint(new GradientPaint(0, 0, new Color(0, 100, 100), cw, 0, new Color(0, 255, 100), true)); g2.fillRect(0, -cy + 5, fillRight - fillLeft, cy); //背景颜色 g2.setPaint(slider.getBackground()); g2.fillRect(10, 10, cw, 5); g2.setPaint(Color.WHITE); g2.drawLine(0, cy, cw - 1, cy); g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_OFF); g2.translate(-trackBounds.x, -(trackBounds.y + cy)); } else { super.paintTrack(g); } }}请不要随意转载 import java.awt.BorderLayout;import java.awt.Color;import java.awt.Component;import java.awt.Dimension;import java.awt.GradientPaint;import java.awt.Graphics;import java.awt.Graphics2D;import java.awt.Rectangle;import java.awt.RenderingHints;import javax.swing.Box;import javax.swing.JFrame;import javax.swing.JSlider;import javax.swing.WindowConstants;import javax.swing.plaf.basic.BasicSliderUI;/** * @author gongfl */public class ExampleSlider extends JFrame { private static final long serialVersionUID = 1L; public ExampleSlider(String str) { super(str); JSlider slider = new JSlider(0, 100, 0); slider.setUI(new MySliderUI(slider)); slider.setMajorTickSpacing(10); slider.setMinorTickSpacing(5); slider.setPaintTicks(true); slider.setPaintLabels(true); Box box = Box.createVerticalBox(); box.add(Box.createVerticalStrut(5)); box.add(slider); box.add(Box.createVerticalGlue()); getContentPane().add(box, BorderLayout.CENTER); getContentPane().add(Box.createHorizontalStrut(5), BorderLayout.WEST); getContentPane().add(Box.createHorizontalStrut(5), BorderLayout.EAST); setSize(new Dimension(240, 100)); } public static void main(String[] args) { ExampleSlider frame = new ExampleSlider("Slider"); frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); frame.setResizable(false); frame.pack(); frame.setLocationRelativeTo(null); frame.setVisible(true); }}class MySliderUI extends BasicSliderUI { public MySliderUI(JSlider b) { super(b); } public void paintThumb(Graphics g) { super.paintThumb(g); } public void paintTrack(Graphics g) { int cy, cw; Rectangle trackBounds = trackRect; if (slider.getOrientation() == JSlider.HORIZONTAL) { Graphics2D g2 = (Graphics2D) g; cy = (trackBounds.height / 2) - 2; cw = trackBounds.width; g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); g2.translate(trackBounds.x, trackBounds.y + cy); //背景颜色 g2.setPaint(Color.GRAY); g2.fillRect(0, -cy + 5, cw, cy); int trackLeft = 0; int trackRight = 0; trackRight = trackRect.width - 1; int middleOfThumb = 0; int fillLeft = 0; int fillRight = 0; // 坐标换算 middleOfThumb = thumbRect.x + (thumbRect.width / 2); middleOfThumb -= trackRect.x; if (!drawInverted()) { fillLeft = !slider.isEnabled() ? trackLeft : trackLeft + 1; fillRight = middleOfThumb; } else { fillLeft = middleOfThumb; fillRight = !slider.isEnabled() ? trackRight - 1 : trackRight - 2; } // 设定渐变 -滑过区域的颜色设置 g2.setPaint(new GradientPaint(0, 0, new Color(0, 100, 100), cw, 0, new Color(0, 255, 100), true)); g2.fillRect(0, -cy + 5, fillRight - fillLeft, cy); //背景颜色 g2.setPaint(slider.getBackground()); g2.fillRect(10, 10, cw, 5); g2.setPaint(Color.WHITE); g2.drawLine(0, cy, cw - 1, cy); g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_OFF); g2.translate(-trackBounds.x, -(trackBounds.y + cy)); } else { super.paintTrack(g); } } @Override protected void paintHorizontalLabel(Graphics g, int value, Component label) { super.paintHorizontalLabel(g, value, label); } @Override protected void paintVerticalLabel(Graphics g, int value, Component label) { super.paintVerticalLabel(g, value, label); }} 急!!急!!!用compass和lucene做全文搜索商品,搜索英文无效??? final声明 我有放 请教一个异常的解决 求救~~~高手 急@@@@@@@@@@@@@@@ 求jbulider2005的教程!! java环境配置问题! 极度郁闷中,看看大家友没有碰到种运行的问题 从c++转到java的疑惑。 菜鸟求助:如何在 JAVA APPLET 里感知到鼠标的双击消息? java生成word并以表格的形式展示数据 关于Java事件驱动原理 我的一点点想法
public JSlider(int min,
int max)
Creates a horizontal slider using the specified min and max with an initial value equal to the average of the min plus max. 使用这个构造参数来避开0-100我觉得比较可行,修改颜色估计要去修改Lookandfell,比较麻烦,至于缩放的话,如果布局正确的话,会自动缩放的
但是每个组件都会有最小的Size限制,缩到一定程度之后就不能正常全部显示了
import java.awt.Color;
import java.awt.Dimension;
import java.awt.GradientPaint;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.RenderingHints;import javax.swing.Box;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JSlider;
import javax.swing.WindowConstants;
import javax.swing.plaf.basic.BasicSliderUI;/**
* @author gongfl
*/
public class ExampleSlider extends JPanel {
private static final long serialVersionUID = 1L; public ExampleSlider() {
JSlider slider = new JSlider(0, 100, 0);
slider.setUI(new MySliderUI(slider));
slider.setMajorTickSpacing(10);
slider.setMinorTickSpacing(5);
slider.setPaintTicks(true);
slider.setPaintLabels(true); Box box = Box.createVerticalBox();
box.add(Box.createVerticalStrut(5));
box.add(slider);
box.add(Box.createVerticalGlue());
add(box, BorderLayout.CENTER);
add(Box.createHorizontalStrut(5), BorderLayout.WEST);
add(Box.createHorizontalStrut(5), BorderLayout.EAST);
setPreferredSize(new Dimension(240, 100));
} public static void main(String[] args) {
JFrame frame = new JFrame("Slider");
frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
frame.getContentPane().add(new ExampleSlider());
frame.setResizable(false);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
}class MySliderUI extends BasicSliderUI { public MySliderUI(JSlider b) {
super(b);
} public void paintThumb(Graphics g) {
super.paintThumb(g);
} public void paintTrack(Graphics g) {
int cy, cw;
Rectangle trackBounds = trackRect;
if (slider.getOrientation() == JSlider.HORIZONTAL) {
Graphics2D g2 = (Graphics2D) g;
cy = (trackBounds.height / 2) - 2;
cw = trackBounds.width; g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
g2.translate(trackBounds.x, trackBounds.y + cy); //背景颜色
g2.setPaint(Color.GRAY);
g2.fillRect(0, -cy + 5, cw, cy); int trackLeft = 0;
int trackRight = 0;
trackRight = trackRect.width - 1; int middleOfThumb = 0;
int fillLeft = 0;
int fillRight = 0; // 坐标换算
middleOfThumb = thumbRect.x + (thumbRect.width / 2);
middleOfThumb -= trackRect.x; if (!drawInverted()) {
fillLeft = !slider.isEnabled() ? trackLeft : trackLeft + 1;
fillRight = middleOfThumb;
} else {
fillLeft = middleOfThumb;
fillRight = !slider.isEnabled() ? trackRight - 1
: trackRight - 2;
}
// 设定渐变 -滑过区域的颜色设置
g2.setPaint(new GradientPaint(0, 0, new Color(0, 100, 100), cw, 0,
new Color(0, 255, 100), true));
g2.fillRect(0, -cy + 5, fillRight - fillLeft, cy); //背景颜色
g2.setPaint(slider.getBackground());
g2.fillRect(10, 10, cw, 5); g2.setPaint(Color.WHITE);
g2.drawLine(0, cy, cw - 1, cy); g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_OFF);
g2.translate(-trackBounds.x, -(trackBounds.y + cy));
} else {
super.paintTrack(g);
}
}
}
请不要随意转载
import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.GradientPaint;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.RenderingHints;import javax.swing.Box;
import javax.swing.JFrame;
import javax.swing.JSlider;
import javax.swing.WindowConstants;
import javax.swing.plaf.basic.BasicSliderUI;/**
* @author gongfl
*/
public class ExampleSlider extends JFrame {
private static final long serialVersionUID = 1L; public ExampleSlider(String str) {
super(str);
JSlider slider = new JSlider(0, 100, 0);
slider.setUI(new MySliderUI(slider));
slider.setMajorTickSpacing(10);
slider.setMinorTickSpacing(5);
slider.setPaintTicks(true);
slider.setPaintLabels(true); Box box = Box.createVerticalBox();
box.add(Box.createVerticalStrut(5));
box.add(slider);
box.add(Box.createVerticalGlue());
getContentPane().add(box, BorderLayout.CENTER);
getContentPane().add(Box.createHorizontalStrut(5), BorderLayout.WEST);
getContentPane().add(Box.createHorizontalStrut(5), BorderLayout.EAST);
setSize(new Dimension(240, 100));
} public static void main(String[] args) {
ExampleSlider frame = new ExampleSlider("Slider");
frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
frame.setResizable(false);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
}class MySliderUI extends BasicSliderUI { public MySliderUI(JSlider b) {
super(b);
} public void paintThumb(Graphics g) {
super.paintThumb(g);
} public void paintTrack(Graphics g) {
int cy, cw;
Rectangle trackBounds = trackRect;
if (slider.getOrientation() == JSlider.HORIZONTAL) {
Graphics2D g2 = (Graphics2D) g;
cy = (trackBounds.height / 2) - 2;
cw = trackBounds.width; g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
g2.translate(trackBounds.x, trackBounds.y + cy); //背景颜色
g2.setPaint(Color.GRAY);
g2.fillRect(0, -cy + 5, cw, cy); int trackLeft = 0;
int trackRight = 0;
trackRight = trackRect.width - 1; int middleOfThumb = 0;
int fillLeft = 0;
int fillRight = 0; // 坐标换算
middleOfThumb = thumbRect.x + (thumbRect.width / 2);
middleOfThumb -= trackRect.x; if (!drawInverted()) {
fillLeft = !slider.isEnabled() ? trackLeft : trackLeft + 1;
fillRight = middleOfThumb;
} else {
fillLeft = middleOfThumb;
fillRight = !slider.isEnabled() ? trackRight - 1
: trackRight - 2;
}
// 设定渐变 -滑过区域的颜色设置
g2.setPaint(new GradientPaint(0, 0, new Color(0, 100, 100), cw, 0,
new Color(0, 255, 100), true));
g2.fillRect(0, -cy + 5, fillRight - fillLeft, cy); //背景颜色
g2.setPaint(slider.getBackground());
g2.fillRect(10, 10, cw, 5); g2.setPaint(Color.WHITE);
g2.drawLine(0, cy, cw - 1, cy); g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_OFF);
g2.translate(-trackBounds.x, -(trackBounds.y + cy));
} else {
super.paintTrack(g);
}
} @Override
protected void paintHorizontalLabel(Graphics g, int value, Component label) {
super.paintHorizontalLabel(g, value, label);
} @Override
protected void paintVerticalLabel(Graphics g, int value, Component label) {
super.paintVerticalLabel(g, value, label);
}
}