41 lines
1.2 KiB
Java
41 lines
1.2 KiB
Java
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import java.awt.*;
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import java.awt.event.*;
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import javax.swing.*;
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public class Volume extends JComponent implements MouseWheelListener {
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private static final int margin = 10;
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private static final int numCircles = 10;
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private int currentLevel = 0;
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public void mouseWheelMoved(MouseWheelEvent ev) {
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currentLevel -= ev.getWheelRotation();
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currentLevel = Math.max(0, Math.min(currentLevel, 11));
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repaint();
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}
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@Override
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protected void paintComponent(Graphics brush) {
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Graphics newBrush = brush.create();
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if (this.isOpaque()) {
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newBrush.setColor(this.getBackground());
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newBrush.fillRect(0, 0, this.getWidth(), this.getHeight());
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}
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newBrush.setColor(new Color(50, 50, 50));
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newBrush.fillRect(0, 0, getWidth(), getHeight());
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for (int i = 0; i < numCircles; i++) {
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if (currentLevel > i) newBrush.setColor(new Color(230, 170, 0));
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else newBrush.setColor(new Color(200, 200, 200));
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newBrush.fillOval(margin + (getWidth() - margin * 2) / numCircles * i, getHeight() / 2, getHeight() / 4, getHeight() / 4);
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}
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}
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public Volume() {
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super();
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}
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}
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