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SliderUi.java
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144 lines (119 loc) · 4.45 KB
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package Widget;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.RenderingHints;
import javax.swing.JSlider;
public class SliderUi extends javax.swing.plaf.metal.MetalSliderUI {
private String ballColor;
private String fillColor;
private String unFillColor;
public SliderUi(){
this("#75A101", "#75A101", "#737373");
}
/**
* 带颜色的填充
* @param ballColor 如：#282828
* @param fillColor 如：#75A101
* @param unFillColor 如：#737373
*/
public SliderUi(String ballColor, String fillColor, String unFillColor){
this.ballColor = ballColor;
this.fillColor = fillColor;
this.unFillColor = unFillColor;
}
/**
* 绘制指示物
*/
public void paintThumb(Graphics g) {
Graphics2D g2d = (Graphics2D) g;
g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
//填充椭圆框为当前thumb位置
g2d.fillOval(thumbRect.x, thumbRect.y, thumbRect.width/2, thumbRect.height/2);
//也可以帖图(利用鼠标事件转换image即可体现不同状态)
//g2d.drawImage(image, thumbRect.x, thumbRect.y, thumbRect.width,thumbRect.height,null);
}
/**
* 绘制刻度轨迹
*/
public void paintTrack(Graphics g) {
if (slider.getOrientation() == JSlider.HORIZONTAL) {
drawHorizontal(g);
} else {
drawVertical(g);
}
}
private void drawHorizontal(Graphics g){
int ch, cw;
Rectangle trackBounds = trackRect;
Graphics2D g2 = (Graphics2D) g;
ch = 3;
cw = trackBounds.width;
//内部整个view的偏移
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
g2.translate(trackBounds.x, trackBounds.y + ch + 3);
// 背景设为灰色
g2.setPaint(Color.decode(unFillColor));
g2.fillRect(0, -ch + 1 , cw + thumbRect.width/2, ch );
int trackLeft = 0;
int trackRight = 0;
trackRight = trackRect.width;
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;
}
// 设定左边背景
g2.setPaint(Color.decode(fillColor));
g2.fillRect(0, -ch + 1, fillRight - fillLeft + thumbRect.width/2, ch );
//圆点的背景
g2.setPaint(Color.decode(ballColor));
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_OFF);
g2.translate(-trackBounds.x + thumbRect.width/2, -(trackBounds.y + ch + 1));
}
private void drawVertical(Graphics g){
int ch, cw;
Rectangle trackBounds = trackRect;
Graphics2D g2 = (Graphics2D) g;
ch = trackBounds.height;
cw = 3;
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
g2.translate(trackBounds.x, trackBounds.y + ch);
// 背景设为灰色
g2.setPaint(Color.decode(fillColor));
g2.fillRect(cw, -ch , cw, ch);
int trackTop = 0;
int trackBottom = 0;
trackBottom = trackRect.height;
int middleOfThumb = 0;
int fillTop = 0;
int fillBottom = 0;
//坐标换算
middleOfThumb = thumbRect.y + (thumbRect.height / 2);
middleOfThumb -= trackRect.y;
if (!drawInverted()) {
fillTop = !slider.isEnabled() ? trackTop : trackTop + 1;
fillBottom = middleOfThumb;
} else {
fillTop = middleOfThumb;
fillBottom = !slider.isEnabled() ? trackBottom - 1 : trackBottom - 2;
}
// 设定上边背景
g2.setPaint(Color.decode(unFillColor));
g2.fillRect(cw, -ch, cw ,fillBottom - fillTop);
//圆点的背景
g2.setPaint(Color.decode(ballColor));
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_OFF);
g2.translate(-trackBounds.x + 1, -(trackBounds.y + ch));
}
}