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BoofCV is an open source Java library for real-time computer vision and robotics applications.
There is a newer version: 1.1.7
/*
 * Copyright (c) 2021, Peter Abeles. All Rights Reserved.
 *
 * This file is part of BoofCV (http://boofcv.org).
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package boofcv.gui.settings;

import boofcv.concurrency.BoofConcurrency;
import boofcv.gui.StandardAlgConfigPanel;
import boofcv.gui.dialogs.JSpringPanel;
import com.github.weisj.darklaf.LafManager;
import org.jetbrains.annotations.Nullable;

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.util.Objects;

/**
 * Control panel
 *
 * @author Peter Abeles
 */
public class GlobalSettingsControls extends StandardAlgConfigPanel implements ActionListener {

	GlobalDemoSettings settings = GlobalDemoSettings.SETTINGS.copy();
	// We don't put threads into settings as that could be very nasty if someone forgot to undo the change after
	// disabling threading
	public int threadCount = BoofConcurrency.getEffectiveActiveThreads();

	JComboBox comboThemes = combo(settings.theme.ordinal(), (Object[])GlobalDemoSettings.ThemesUI.values());
	JComboBox comboControl3D = combo(settings.controls3D.ordinal(), (Object[])GlobalDemoSettings.Controls3D.values());

	JCheckBox checkVerboseRuntime = checkbox("Verbose Runtime", settings.verboseRuntime);
	JCheckBox checkVerboseTracking = checkbox("Verbose Tracking", settings.verboseTracking);
	JSpinner spinnerThreads = spinner(threadCount, 0, Runtime.getRuntime().availableProcessors(), 1);

	JButton bSave = new JButton("Save");
	JButton bReset = new JButton("Reset");

	boolean changedTheme = false;

	@Nullable JDialog dialog;
	boolean canceled = false;

	public GlobalSettingsControls() {
		bSave.addActionListener(( e ) -> handleSave());
		bReset.addActionListener(( e ) -> handleReset());

		addLabeled(comboThemes, "Themes", "Change the Swing theme");
		addLabeled(comboControl3D, "Control3D");
		addAlignLeft(checkVerboseRuntime, "Print runtime profiling to stdout");
		addAlignLeft(checkVerboseTracking, "Turn on verbose output to stdout");
		addLabeled(spinnerThreads, "Threads", "Change number of threads used. 0=max possible");
		addVerticalGlue();
		JPanel foo = JSpringPanel.createLockedSides(bReset, bSave, 30);
		foo.setBorder(BorderFactory.createEmptyBorder(6, 10, 6, 10));
		foo.setPreferredSize(new Dimension(0, 40));
		foo.setMaximumSize(new Dimension(5000, 40));
		add(foo);
		setPreferredSize(new Dimension(250, 180));
	}

	private void handleSave() {
		GlobalDemoSettings.SETTINGS = settings;
		settings.save();
		Objects.requireNonNull(dialog).setVisible(false);
	}

	private void handleReset() {
		// should reset everything. This is ugly
		GlobalDemoSettings.SETTINGS = new GlobalDemoSettings();
		GlobalDemoSettings.SETTINGS.save();
		handleCancel();
	}

	private void handleCancel() {
		canceled = true;
		Objects.requireNonNull(dialog).setVisible(false);
	}

	@Override public void controlChanged( final Object source ) {
		if (source == comboThemes) {
			settings.theme = GlobalDemoSettings.ThemesUI.values()[comboThemes.getSelectedIndex()];
			changedTheme = true;
		} else if (source == comboControl3D) {
			settings.controls3D = GlobalDemoSettings.Controls3D.values()[comboControl3D.getSelectedIndex()];
		} else if (source == checkVerboseRuntime) {
			settings.verboseRuntime = checkVerboseRuntime.isSelected();
		} else if (source == checkVerboseTracking) {
			settings.verboseTracking = checkVerboseTracking.isSelected();
		} else if (source == spinnerThreads) {
			threadCount = (Integer)spinnerThreads.getValue();
		}
	}

	public void showDialog( @Nullable JFrame owner, @Nullable Component parent ) {
		canceled = false;

		dialog = new JDialog(owner, "Demonstration Settings", Dialog.ModalityType.APPLICATION_MODAL);

		try {
			dialog.addWindowListener(new WindowAdapter() {
				@Override
				public void windowClosing( WindowEvent e ) {
					handleCancel();
				}
			});
			dialog.setDefaultCloseOperation(WindowConstants.DO_NOTHING_ON_CLOSE);
			dialog.getContentPane().setLayout(new BorderLayout());
			dialog.getContentPane().add(this, BorderLayout.CENTER);
			dialog.pack();
			dialog.setLocationRelativeTo(parent);
			dialog.setVisible(true);
		} catch (RuntimeException e) {
			e.printStackTrace();
			System.err.println("Handling exception by resetting LAF");
			// if something went horribly wrong here it's probably look and feel related. Revert to the default
			settings.theme = GlobalDemoSettings.ThemesUI.DEFAULT;
			settings.changeTheme();
			changedTheme = true;
		}

		// should block at this point
		dialog.dispose();
		dialog = null;

		// See if it needs to enact the changes
		if (!canceled) {
			// Update the maximum number of threads if there has been a change
			if (threadCount != BoofConcurrency.getEffectiveActiveThreads()) {
				BoofConcurrency.setMaxThreads(threadCount != 0 ? threadCount : Runtime.getRuntime().availableProcessors());
			}
			if (changedTheme) {
				settings.changeTheme();
				// Update the all windows with the new theme
				LafManager.updateLaf();
				// This warning is needed since not all changes from the previous LAF are reset and can result
				// in really messed up looking themes
				JOptionPane.showMessageDialog(parent, "Restart to ensure the theme renders correctly");
			}
		}
	}

	public static void main( String[] args ) {
		GlobalSettingsControls controls = new GlobalSettingsControls();
		controls.showDialog(null, null);
	}
}