basic implementation of FlatLaf and FlatLabelUI

flatlaf-core/src/main/java/com/formdev/flatlaf/FlatDarkLaf.java

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+/*
+ * Copyright 2019 FormDev Software GmbH
+ *
+ * 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 com.formdev.flatlaf;
+
+/**
+ * A Flat LaF that has a dark color scheme.
+ *
+ * @author Karl Tauber
+ */
+public class FlatDarkLaf
+	extends FlatLaf
+{
+	@Override
+	public String getName() {
+		return "Flat Dark";
+	}
+
+	@Override
+	public String getDescription() {
+		return "Flat Dark Look and Feel";
+	}
+}

flatlaf-core/src/main/java/com/formdev/flatlaf/FlatLaf.java

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+/*
+ * Copyright 2019 FormDev Software GmbH
+ *
+ * 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 com.formdev.flatlaf;
+
+import java.awt.Color;
+import java.awt.Font;
+import java.awt.Toolkit;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Properties;
+import javax.swing.UIDefaults;
+import javax.swing.plaf.ColorUIResource;
+import javax.swing.plaf.FontUIResource;
+import javax.swing.plaf.basic.BasicLookAndFeel;
+import javax.swing.plaf.metal.MetalLookAndFeel;
+import com.formdev.flatlaf.util.SystemInfo;
+
+/**
+ * The base class for all Flat LaFs.
+ *
+ * @author Karl Tauber
+ */
+public abstract class FlatLaf
+	extends BasicLookAndFeel
+{
+	private BasicLookAndFeel base;
+
+	@Override
+	public String getID() {
+		return getName();
+	}
+
+	@Override
+	public boolean isNativeLookAndFeel() {
+		return true;
+	}
+
+	@Override
+	public boolean isSupportedLookAndFeel() {
+		return true;
+	}
+
+	@Override
+	public void initialize() {
+		getBase().initialize();
+
+		super.initialize();
+	}
+
+	@Override
+	public void uninitialize() {
+		if( base != null )
+			base.uninitialize();
+
+		super.uninitialize();
+	}
+
+	/**
+	 * Get/create base LaF. This is used to grab base UI defaults from different LaFs.
+	 * E.g. on Mac from system dependent LaF, otherwise from Metal LaF.
+	 */
+	private BasicLookAndFeel getBase() {
+		if( base == null )
+			base = new MetalLookAndFeel();
+		return base;
+	}
+
+	@Override
+	public UIDefaults getDefaults() {
+		UIDefaults defaults = getBase().getDefaults();
+
+		initFonts( defaults );
+		loadDefaultsFromProperties( defaults );
+
+		return defaults;
+	}
+
+	private void initFonts( UIDefaults defaults ) {
+		FontUIResource uiFont = null;
+
+		//TODO
+		if( SystemInfo.IS_WINDOWS ) {
+			Font winFont = (Font) Toolkit.getDefaultToolkit().getDesktopProperty( "win.messagebox.font" );
+			if( winFont != null )
+				uiFont = new FontUIResource( winFont );
+		}
+
+		if( uiFont == null )
+			return;
+
+		// override fonts
+		for( Object key : defaults.keySet() ) {
+			if( key instanceof String && ((String)key).endsWith( ".font" ) )
+				defaults.put( key, uiFont );
+		}
+	}
+
+	/**
+	 * Load properties associated to Flat LaF classes and add to UI defaults.
+	 *
+	 * Each class that extend this class may have its own .properties file
+	 * in the same package as the class. Properties from superclasses are loaded
+	 * first to give subclasses a chance to override defaults.
+	 * E.g. if running FlatDarkLaf, then the FlatLaf.properties is loaded first
+	 * and FlatDarkLaf.properties loaded second.
+	 */
+	private void loadDefaultsFromProperties( UIDefaults defaults ) {
+		// determine classes in class hierarchy in reverse order
+		ArrayList<Class<?>> lafClasses = new ArrayList<>();
+		for( Class<?> lafClass = getClass();
+			FlatLaf.class.isAssignableFrom( lafClass );
+			lafClass = lafClass.getSuperclass() )
+		{
+			lafClasses.add( 0, lafClass );
+		}
+
+		try {
+			// load properties files
+			Properties properties = new Properties();
+			for( Class<?> lafClass : lafClasses ) {
+				String propertiesName = "/" + lafClass.getName().replace( '.', '/' ) + ".properties";
+				try( InputStream in = lafClass.getResourceAsStream( propertiesName ) ) {
+					if( in != null )
+						properties.load( in );
+				}
+			}
+
+			// get globals, which override all other defaults that end with same suffix
+			String globalPrefix = "*.";
+			HashMap<String, Object> globals = new HashMap<>();
+			for( Object okey : properties.keySet() ) {
+				String key = (String) okey;
+				if( key.startsWith( globalPrefix ) ) {
+					Object value = parseValue( key, properties.getProperty( key ) );
+					globals.put( key.substring( globalPrefix.length() ), value );
+				}
+			}
+
+			// override UI defaults with globals
+			for( Object key : defaults.keySet() ) {
+				if( key instanceof String && ((String)key).contains( "." ) ) {
+					String skey = (String) key;
+					String globalKey = skey.substring( skey.lastIndexOf( '.' ) + 1 );
+					Object globalValue = globals.get( globalKey );
+					if( globalValue != null )
+						defaults.put( key, globalValue );
+				}
+			}
+
+			// add non-global properties to UI defaults
+			for( Map.Entry<Object, Object> e : properties.entrySet() ) {
+				String key = (String) e.getKey();
+				String value = (String) e.getValue();
+				defaults.put( key, parseValue( key, value ) );
+			}
+		} catch( IOException ex ) {
+			ex.printStackTrace();
+		}
+	}
+
+	private Object parseValue( String key, String value ) {
+		value = value.trim();
+
+		// null, false, true
+		switch( value ) {
+			case "null":		return null;
+			case "false":	return false;
+			case "true":		return true;
+		}
+
+		// colors
+		ColorUIResource color = parseColor( value );
+		if( color != null )
+			return color;
+
+		// string
+		return value;
+	}
+
+	private ColorUIResource parseColor( String value ) {
+		try {
+			if( value.length() == 6 ) {
+				int rgb = Integer.parseInt( value, 16 );
+				return new ColorUIResource( rgb );
+			}
+			if( value.length() == 8 ) {
+				int rgba = Integer.parseInt( value, 16 );
+				return new ColorUIResource( new Color( rgba, true ) );
+			}
+		} catch( NumberFormatException ex ) {
+			// not a color --> ignore
+		}
+		return null;
+	}
+}

flatlaf-core/src/main/java/com/formdev/flatlaf/FlatLightLaf.java

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+/*
+ * Copyright 2019 FormDev Software GmbH
+ *
+ * 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 com.formdev.flatlaf;
+
+/**
+ * A Flat LaF that has a light color scheme.
+ *
+ * @author Karl Tauber
+ */
+public class FlatLightLaf
+	extends FlatLaf
+{
+	@Override
+	public String getName() {
+		return "Flat Light";
+	}
+
+	@Override
+	public String getDescription() {
+		return "Flat Light Look and Feel";
+	}
+}

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatLabelUI.java

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+/*
+ * Copyright 2019 FormDev Software GmbH
+ *
+ * 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 com.formdev.flatlaf.ui;
+
+import javax.swing.JComponent;
+import javax.swing.plaf.ComponentUI;
+import javax.swing.plaf.basic.BasicLabelUI;
+
+/**
+ * Provides the Flat LaF UI delegate for {@link javax.swing.JLabel}.
+ *
+ * @author Karl Tauber
+ */
+public class FlatLabelUI
+	extends BasicLabelUI
+{
+	private static ComponentUI instance;
+
+	public static ComponentUI createUI( JComponent c ) {
+		if( instance == null )
+			instance = new FlatLabelUI();
+		return instance;
+	}
+}

flatlaf-core/src/main/java/com/formdev/flatlaf/util/SystemInfo.java

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+/*
+ * Copyright 2019 FormDev Software GmbH
+ *
+ * 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 com.formdev.flatlaf.util;
+
+import java.util.Locale;
+
+/**
+ * Provides information about the current system.
+ *
+ * @author Karl Tauber
+ */
+public class SystemInfo
+{
+	public static final boolean IS_WINDOWS;
+	public static final boolean IS_MAC;
+	public static final boolean IS_LINUX;
+
+	static {
+		String osName = System.getProperty( "os.name" ).toLowerCase( Locale.ENGLISH );
+
+		IS_WINDOWS = osName.startsWith( "windows" );
+		IS_MAC = osName.startsWith( "mac" );
+		IS_LINUX = osName.startsWith( "linux" );
+	}
+}

flatlaf-core/src/main/resources/com/formdev/flatlaf/FlatDarkLaf.properties

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+#
+# Copyright 2019 FormDev Software GmbH
+#
+# 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.
+#
+
+#---- globals ----
+
+*.background=3c3f41
+*.foreground=bbbbbb

flatlaf-core/src/main/resources/com/formdev/flatlaf/FlatLaf.properties

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+#
+# Copyright 2019 FormDev Software GmbH
+#
+# 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.
+#
+
+#---- UI delegates ----
+
+LabelUI=com.formdev.flatlaf.ui.FlatLabelUI

flatlaf-core/src/main/resources/com/formdev/flatlaf/FlatLightLaf.properties

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+#
+# Copyright 2019 FormDev Software GmbH
+#
+# 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.
+#
+
+#---- globals ----
+
+*.background=f2f2f2
+*.foreground=000000