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Application: Make memory indicator less ugly
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modules/decima-ui/src/main/java/com/shade/decima/ui/controls/MemoryIndicator.java
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modules/platform-ui/src/main/java/com/shade/platform/ui/controls/MemoryIndicator.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,127 @@ | ||
| package com.shade.platform.ui.controls; | ||
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| import com.shade.platform.ui.util.UIUtils; | ||
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| import javax.swing.*; | ||
| import java.awt.*; | ||
| import java.awt.event.HierarchyEvent; | ||
| import java.awt.event.MouseAdapter; | ||
| import java.awt.event.MouseEvent; | ||
| import java.lang.management.ManagementFactory; | ||
| import java.lang.management.MemoryMXBean; | ||
| import java.lang.management.MemoryUsage; | ||
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| public class MemoryIndicator extends JComponent { | ||
| private static final int MB = 1024 * 1024; | ||
| private static final int UPDATE_INTERVAL = 1000; | ||
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| private final MemoryMXBean bean = ManagementFactory.getMemoryMXBean(); | ||
| private MemoryUsage usage = bean.getHeapMemoryUsage(); | ||
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| public MemoryIndicator() { | ||
| final Timer timer = new Timer(UPDATE_INTERVAL, e -> refresh()); | ||
| timer.setInitialDelay(0); | ||
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| addHierarchyListener(e -> { | ||
| if (e.getID() == HierarchyEvent.HIERARCHY_CHANGED && (e.getChangeFlags() & HierarchyEvent.SHOWING_CHANGED) != 0) { | ||
| if (isShowing()) { | ||
| timer.start(); | ||
| } else { | ||
| timer.stop(); | ||
| } | ||
| } | ||
| }); | ||
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| addMouseListener(new MouseAdapter() { | ||
| @Override | ||
| public void mouseClicked(MouseEvent e) { | ||
| bean.gc(); | ||
| } | ||
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| @Override | ||
| public void mouseEntered(MouseEvent e) { | ||
| repaint(); | ||
| } | ||
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| @Override | ||
| public void mouseExited(MouseEvent e) { | ||
| repaint(); | ||
| } | ||
| }); | ||
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| ToolTipManager.sharedInstance().registerComponent(this); | ||
| } | ||
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| public void refresh() { | ||
| usage = bean.getHeapMemoryUsage(); | ||
| repaint(); | ||
| } | ||
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| @Override | ||
| protected void paintComponent(Graphics g) { | ||
| final Graphics2D g2 = (Graphics2D) g.create(); | ||
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| final int width = getWidth(); | ||
| final int height = getHeight(); | ||
| final int used = (int) (width * usage.getUsed() / usage.getMax()); | ||
| final int committed = (int) (width * usage.getCommitted() / usage.getMax()); | ||
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| g2.setColor(UIManager.getColor("MemoryIndicator.usedBackground")); | ||
| g2.fillRect(0, 0, used, height); | ||
| g2.setColor(UIManager.getColor("MemoryIndicator.committedBackground")); | ||
| g2.fillRect(used, 0, committed - used, height); | ||
| g2.setColor(UIManager.getColor("MemoryIndicator.maxBackground")); | ||
| g2.fillRect(committed, 0, width - committed, height); | ||
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| UIUtils.setRenderingHints(g2); | ||
| g2.setColor(UIManager.getColor(getMousePosition() != null ? "MemoryIndicator.hoverForeground" : "MemoryIndicator.foreground")); | ||
| g2.setFont(UIManager.getFont("MemoryIndicator.font")); | ||
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| final FontMetrics metrics = g2.getFontMetrics(); | ||
| final String text = "%d of %dM".formatted(usage.getUsed() / MB, usage.getMax() / MB); | ||
| g2.drawString(text, (width - metrics.stringWidth(text)) / 2, (height - metrics.getHeight()) / 2 + metrics.getAscent()); | ||
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| g2.dispose(); | ||
| } | ||
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| @Override | ||
| public String getToolTipText(MouseEvent event) { | ||
| return """ | ||
| <html> | ||
| <table> | ||
| <tr><td>Used:</td><td align=right>%sM</td></tr> | ||
| <tr><td>Committed:</td><td align=right>%sM</td></tr> | ||
| <tr><td>Max:</td><td align=right>%sM</td></tr> | ||
| </table> | ||
| </html>""" | ||
| .formatted( | ||
| usage.getUsed() / MB, | ||
| usage.getCommitted() / MB, | ||
| usage.getMax() / MB | ||
| ); | ||
| } | ||
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| @Override | ||
| public Dimension getPreferredSize() { | ||
| if (isPreferredSizeSet()) { | ||
| return super.getPreferredSize(); | ||
| } | ||
| return new Dimension(100, 22); | ||
| } | ||
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| @Override | ||
| public Dimension getMinimumSize() { | ||
| if (isMinimumSizeSet()) { | ||
| return super.getMinimumSize(); | ||
| } | ||
| return getPreferredSize(); | ||
| } | ||
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| @Override | ||
| public Dimension getMaximumSize() { | ||
| if (isMaximumSizeSet()) { | ||
| return super.getMaximumSize(); | ||
| } | ||
| return getPreferredSize(); | ||
| } | ||
| } |
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