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Fix task monitor window layout #89

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Fix task monitor window layout #89

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11987eb
With layout color being ignored in task monitor component.
NicoKiaru Mar 29, 2026
182c3c4
Task monitor swing component improvement:
NicoKiaru Mar 29, 2026
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27 changes: 18 additions & 9 deletions src/main/java/org/scijava/ui/swing/task/SwingTaskMonitorComponent.java
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Original file line number Diff line number Diff line change
Expand Up @@ -34,7 +34,6 @@
import org.scijava.task.Task;
import org.scijava.task.event.TaskEvent;

import javax.swing.Icon;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JLabel;
Expand All @@ -44,13 +43,12 @@
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.SwingConstants;
import javax.swing.UIManager;
import javax.swing.border.EmptyBorder;
import javax.swing.plaf.basic.BasicProgressBarUI;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.TableCellRenderer;
import java.awt.BorderLayout;
import java.awt.Color;

import java.awt.Component;
import java.awt.Dimension;
import java.awt.Graphics;
Expand Down Expand Up @@ -148,6 +146,8 @@ public class SwingTaskMonitorComponent {
*/
private double globalProgression = 0;

private boolean rowHeightInitialized = false;

/**
* Constructs a Swing Task Monitor component - clickable circular progress bar
* the component can be accessed with
Expand Down Expand Up @@ -200,7 +200,6 @@ public void mouseClicked(MouseEvent e) {
taskFrame = new JFrame("Tasks");
if (undecorated) {
taskFrame.setUndecorated(true);
taskFrame.setBackground(new Color(1.0f, 1.0f, 1.0f, 0.0f));
}

// taskTable showing all tasks, contained in taskFrame
Expand All @@ -209,7 +208,6 @@ public void mouseClicked(MouseEvent e) {
taskTable.setShowGrid(false);
taskTable.setIntercellSpacing(new Dimension(0, 0));
taskTable.setTableHeader(null); // no header
taskTable.setRowHeight(65);
taskTable.setRowMargin(2);
taskTable.setDefaultRenderer(Task.class, new TaskRenderer(false));
// restrict size of second column to the size of the stop icon
Expand Down Expand Up @@ -266,6 +264,12 @@ private void onEvent(final TaskEvent evt) {
} else {
taskTableModel.addOrUpdate(task);
}
if (!rowHeightInitialized) {
rowHeightInitialized = true;
TableCellRenderer renderer = taskTable.getDefaultRenderer(Task.class);
Component c = renderer.getTableCellRendererComponent(taskTable, task, false, false, 0, 0);
taskTable.setRowHeight(c.getPreferredSize().height + taskTable.getRowMargin());
}
// globalProgression has been updated during taskTableModel update
globalProgressBar.setValue((int)(globalProgression*100));
}
Expand Down Expand Up @@ -484,8 +488,7 @@ class TaskRenderer implements TableCellRenderer {
JLabel labelTop = new JLabel(); // top label : task name and status
JProgressBar progressBar = new JProgressBar(); // standard linear progress bar
JLabel labelBottom = new JLabel(); // bottom label : task completion, and optionally time left
Icon errorIcon = UIManager.getIcon("OptionPane.errorIcon"); // icon for canceling task
JLabel cancelTask; // container for errorIcon
JLabel cancelTask; // cancel icon

public TaskRenderer(boolean isBordered) {
labelTop.setVerticalTextPosition(SwingConstants.TOP);
Expand All @@ -498,16 +501,22 @@ public TaskRenderer(boolean isBordered) {
cell.add(labelTop,"height ::14, span");
cell.add(progressBar,"height ::3, span");
cell.add(labelBottom, "height ::14");
cancelTask = new JLabel(errorIcon, SwingConstants.CENTER);
cancelTask = new JLabel("\u2715", SwingConstants.CENTER);
cancelTask.setOpaque(true);
cancelTask.setBackground(cell.getBackground());
}

@Override
public Component getTableCellRendererComponent(
JTable table, Object tk,
boolean isSelected, boolean hasFocus,
int row, int column) {
// Pick up LaF colors from the table
cell.setBackground(table.getBackground());
cell.setForeground(table.getForeground());
labelTop.setForeground(table.getForeground());
labelBottom.setForeground(table.getForeground());
cancelTask.setBackground(table.getBackground());
cancelTask.setForeground(table.getForeground());
if (column==1) {
return cancelTask; // second column : stop icon
}
Expand Down
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