Add src/main/java/com/formdev/flatlaf/demo/DemoPrefs.java
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277
src/main/java/com/formdev/flatlaf/demo/DemoPrefs.java
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277
src/main/java/com/formdev/flatlaf/demo/DemoPrefs.java
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/*
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* Copyright 2019 FormDev Software GmbH
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.formdev.flatlaf.demo;
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import java.awt.EventQueue;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.IOException;
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import java.net.DatagramPacket;
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import java.net.InetAddress;
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import java.net.MulticastSocket;
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import java.net.SocketException;
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import java.nio.ByteBuffer;
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import java.util.prefs.Preferences;
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import javax.swing.JComponent;
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import javax.swing.JFrame;
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import javax.swing.JOptionPane;
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import javax.swing.KeyStroke;
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import javax.swing.UIManager;
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import com.formdev.flatlaf.FlatLaf;
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import com.formdev.flatlaf.FlatLightLaf;
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import com.formdev.flatlaf.FlatPropertiesLaf;
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import com.formdev.flatlaf.IntelliJTheme;
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import com.formdev.flatlaf.util.LoggingFacade;
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import com.formdev.flatlaf.util.StringUtils;
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import com.formdev.flatlaf.util.SystemInfo;
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/**
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* @author Karl Tauber
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*/
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public class DemoPrefs
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{
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public static final String KEY_LAF_CLASS_NAME = "lafClassName";
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public static final String KEY_LAF_THEME_FILE = "lafThemeFile";
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public static final String KEY_SYSTEM_SCALE_FACTOR = "systemScaleFactor";
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public static final String KEY_LAF_SYNC = "lafSync";
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private static Preferences state;
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public static Preferences getState() {
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return state;
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}
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public static void init( String rootPath ) {
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state = Preferences.userRoot().node( rootPath );
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}
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public static void setupLaf( String[] args ) {
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// com.formdev.flatlaf.demo.intellijthemes.IJThemesDump.install();
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// set look and feel
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try {
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if( args.length > 0 )
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UIManager.setLookAndFeel( args[0] );
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else
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restoreLaf();
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} catch( Throwable ex ) {
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LoggingFacade.INSTANCE.logSevere( null, ex );
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// fallback
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FlatLightLaf.setup();
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}
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// remember active look and feel
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UIManager.addPropertyChangeListener( e -> {
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if( "lookAndFeel".equals( e.getPropertyName() ) ) {
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state.put( KEY_LAF_CLASS_NAME, UIManager.getLookAndFeel().getClass().getName() );
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notifyLafChange();
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}
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} );
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}
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private static void restoreLaf()
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throws Exception
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{
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String lafClassName = state.get( KEY_LAF_CLASS_NAME, FlatLightLaf.class.getName() );
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if( FlatPropertiesLaf.class.getName().equals( lafClassName ) ||
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IntelliJTheme.ThemeLaf.class.getName().equals( lafClassName ) )
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{
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String themeFileName = state.get( KEY_LAF_THEME_FILE, "" );
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if( !themeFileName.isEmpty() ) {
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File themeFile = new File( themeFileName );
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if( themeFileName.endsWith( ".properties" ) ) {
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String themeName = StringUtils.removeTrailing( themeFile.getName(), ".properties" );
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FlatLaf.setup( new FlatPropertiesLaf( themeName, themeFile ) );
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} else
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FlatLaf.setup( IntelliJTheme.createLaf( new FileInputStream( themeFile ) ) );
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} else
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FlatLightLaf.setup();
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} else
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UIManager.setLookAndFeel( lafClassName );
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}
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public static void initSystemScale() {
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if( System.getProperty( "sun.java2d.uiScale" ) == null ) {
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String scaleFactor = state.get( KEY_SYSTEM_SCALE_FACTOR, null );
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if( scaleFactor != null ) {
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System.setProperty( "sun.java2d.uiScale", scaleFactor );
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System.out.println( "FlatLaf: setting 'sun.java2d.uiScale' to " + scaleFactor );
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System.out.println( " use 'Alt+Shift+F1...12' to change it to 1x...4x" );
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}
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}
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}
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/**
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* register Alt+Shift+F1, F2, ... F12 keys to change system scale factor
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*/
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public static void registerSystemScaleFactors( JFrame frame ) {
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registerSystemScaleFactor( frame, "alt shift F1", null );
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registerSystemScaleFactor( frame, "alt shift F2", "1" );
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if( SystemInfo.isWindows ) {
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registerSystemScaleFactor( frame, "alt shift F3", "1.25" );
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registerSystemScaleFactor( frame, "alt shift F4", "1.5" );
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registerSystemScaleFactor( frame, "alt shift F5", "1.75" );
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registerSystemScaleFactor( frame, "alt shift F6", "2" );
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registerSystemScaleFactor( frame, "alt shift F7", "2.25" );
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registerSystemScaleFactor( frame, "alt shift F8", "2.5" );
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registerSystemScaleFactor( frame, "alt shift F9", "2.75" );
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registerSystemScaleFactor( frame, "alt shift F10", "3" );
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registerSystemScaleFactor( frame, "alt shift F11", "3.5" );
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registerSystemScaleFactor( frame, "alt shift F12", "4" );
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} else {
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// Java on macOS and Linux supports only integer scale factors
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registerSystemScaleFactor( frame, "alt shift F3", "2" );
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registerSystemScaleFactor( frame, "alt shift F4", "3" );
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registerSystemScaleFactor( frame, "alt shift F5", "4" );
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}
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}
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private static void registerSystemScaleFactor( JFrame frame, String keyStrokeStr, String scaleFactor ) {
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KeyStroke keyStroke = KeyStroke.getKeyStroke( keyStrokeStr );
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if( keyStroke == null )
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throw new IllegalArgumentException( "Invalid key stroke '" + keyStrokeStr + "'" );
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((JComponent)frame.getContentPane()).registerKeyboardAction(
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e -> applySystemScaleFactor( frame, scaleFactor ),
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keyStroke,
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JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT );
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}
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private static void applySystemScaleFactor( JFrame frame, String scaleFactor ) {
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if( JOptionPane.showConfirmDialog( frame,
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"Change system scale factor to "
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+ (scaleFactor != null ? scaleFactor : "default")
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+ " and exit?",
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frame.getTitle(), JOptionPane.YES_NO_OPTION ) != JOptionPane.YES_OPTION )
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return;
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if( scaleFactor != null )
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state.put( KEY_SYSTEM_SCALE_FACTOR, scaleFactor );
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else
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state.remove( KEY_SYSTEM_SCALE_FACTOR );
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System.exit( 0 );
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}
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//---- inter-process Laf change notification/synchronisation --------------
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// used for FlatLaf development when running multiple testing apps
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private static final String MULTICAST_ADDRESS = "224.63.31.41";
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private static final int MULTICAST_PORT = 36584;
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private static final long PROCESS_ID = System.nanoTime();
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private static Thread thread;
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private static boolean notifyEnabled = true;
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public static void initLafSync( JFrame frame ) {
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((JComponent)frame.getContentPane()).registerKeyboardAction(
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e -> enableDisableLafSync(),
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KeyStroke.getKeyStroke( "alt shift S" ),
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JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT );
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if( state.getBoolean( KEY_LAF_SYNC, false ) ) {
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System.out.println( "FlatLaf: theme sync enabled; use Alt+Shift+S to disable it" );
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listenToLafChange();
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}
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}
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private static void enableDisableLafSync() {
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boolean enabled = !state.getBoolean( KEY_LAF_SYNC, false );
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state.putBoolean( KEY_LAF_SYNC, enabled );
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if( enabled )
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listenToLafChange();
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else if( thread != null) {
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thread.interrupt();
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thread = null;
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}
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}
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private static void listenToLafChange() {
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if( thread != null )
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return;
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thread = new Thread( "FlatLaf Laf change listener" ) {
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MulticastSocket socket;
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@Override
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public void run() {
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try( MulticastSocket socket = new MulticastSocket( MULTICAST_PORT ) ) {
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this.socket = socket;
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socket.joinGroup( InetAddress.getByName( MULTICAST_ADDRESS ) );
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byte[] buffer = new byte[Long.BYTES];
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for(;;) {
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DatagramPacket packet = new DatagramPacket( buffer, buffer.length );
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socket.receive( packet );
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long id = ByteBuffer.wrap( buffer ).getLong();
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if( id == PROCESS_ID )
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continue; // was sent from this process
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EventQueue.invokeLater( () -> {
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notifyEnabled = false;
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try {
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restoreLaf();
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FlatLaf.updateUI();
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} catch( Throwable ex ) {
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LoggingFacade.INSTANCE.logSevere( null, ex );
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} finally {
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notifyEnabled = true;
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}
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} );
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}
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} catch( IOException ex ) {
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if( ex instanceof SocketException && "Socket closed".equals( ex.getMessage() ) )
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return; // interrupted
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LoggingFacade.INSTANCE.logSevere( null, ex );
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}
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}
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@Override
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public void interrupt() {
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super.interrupt();
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socket.close();
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}
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};
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thread.setDaemon( true );
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thread.start();
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}
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private static void notifyLafChange() {
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if( thread == null || !notifyEnabled )
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return;
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EventQueue.invokeLater( () -> {
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try( MulticastSocket socket = new MulticastSocket() ) {
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InetAddress address = InetAddress.getByName( MULTICAST_ADDRESS );
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byte[] buffer = ByteBuffer.wrap( new byte[Long.BYTES] ).putLong( PROCESS_ID ).array();
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DatagramPacket packet = new DatagramPacket( buffer, buffer.length, address, MULTICAST_PORT );
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socket.send( packet );
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} catch( IOException ex ) {
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LoggingFacade.INSTANCE.logSevere( null, ex );
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}
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} );
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}
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}
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