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A themeable Look and Feel for java swing
/*
* MIT License
*
* Copyright (c) 2020 Jannis Weis
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
package com.github.weisj.darklaf.task;
import java.awt.*;
import java.awt.font.TextAttribute;
import java.text.AttributedCharacterIterator;
import java.util.*;
import java.util.List;
import java.util.function.Function;
import java.util.function.Predicate;
import java.util.logging.Logger;
import javax.swing.*;
import javax.swing.plaf.UIResource;
import com.github.weisj.darklaf.DarkLaf;
import com.github.weisj.darklaf.PropertyLoader;
import com.github.weisj.darklaf.graphics.GraphicsUtil;
import com.github.weisj.darklaf.theme.Theme;
import com.github.weisj.darklaf.theme.info.FontSizeRule;
import com.github.weisj.darklaf.uiresource.DarkFontUIResource;
import com.github.weisj.darklaf.util.LogUtil;
import com.github.weisj.darklaf.util.PropertyUtil;
import com.github.weisj.darklaf.util.SystemInfo;
public class FontDefaultsInitTask implements DefaultsInitTask {
private static final Logger LOGGER = LogUtil.getLogger(FontDefaultsInitTask.class);
private static final String FONT_PROPERTY_PATH = "properties/";
private static final String FONT_SIZE_DEFAULTS_NAME = "font_sizes";
private static final String FONT_DEFAULTS_NAME = "font";
private static final String KERNING_ALLOW_LIST = "kerning.allowList";
private static final String KERNING_BLOCK_LIST = "kerning.blockList";
private static final String ALL_FONTS = "__all__";
private static final Map ENABLE_KERNING = Collections.singletonMap(TextAttribute.KERNING,
TextAttribute.KERNING_ON);
private static final Map DISABLE_KERNING = Collections.singletonMap(TextAttribute.KERNING,
null);
/*
* On Catalina the are issues with font kerning and .AppleSystemUIFont.
* For now Helvetica Neue is used instead.
*/
private static final String MAC_OS_CATALINA_FONT_NAME = ".AppleSystemUIFont";
private static final String MAC_OS_CATALINA_FONT_NAME_FALLBACK = "Helvetica Neue";
private static final String WINDOWS_10_FONT_NAME = "Segoe UI";
private static final String MAC_OS_FONT_NAME = ".SF NS Text";
@Override
public void run(final Theme currentTheme, final UIDefaults defaults) {
loadFontProperties(defaults);
if (SystemInfo.isMac) {
patchOSFonts(defaults, this::mapMacOSFont);
} else if (SystemInfo.isWindows) {
patchOSFonts(defaults, this::mapWindowsFont);
}
if (SystemInfo.isMacOSCatalina) {
defaults.put(RenderingHints.KEY_FRACTIONALMETRICS,
RenderingHints.VALUE_FRACTIONALMETRICS_ON);
}
if (systemKerningEnabled()) {
List allowedFonts = PropertyUtil.getList(defaults, KERNING_ALLOW_LIST, String.class);
List blockedFonts = PropertyUtil.getList(defaults, KERNING_BLOCK_LIST, String.class);
if (!allowedFonts.isEmpty()) {
Set allowedFontsSet = new HashSet<>(allowedFonts);
Set blockedFontSet = new HashSet<>(blockedFonts);
boolean enabledAll = ALL_FONTS.equals(allowedFonts.get(0));
setupKerningPerFont(defaults, key -> (enabledAll || allowedFontsSet.contains(key))
&& !blockedFontSet.contains(key));
}
}
applyFontRule(currentTheme, defaults);
setupRenderingHints(defaults);
defaults.remove(KERNING_ALLOW_LIST);
defaults.remove(KERNING_BLOCK_LIST);
}
private boolean systemKerningEnabled() {
if (SystemInfo.isMac) return SystemInfo.isMacOSMojave;
if (SystemInfo.isWindows) return SystemInfo.isWindowsVista;
return false;
}
private void setupRenderingHints(final UIDefaults defaults) {
if (!SystemInfo.isMacOSMojave) {
Toolkit toolkit = Toolkit.getDefaultToolkit();
Map desktopHints = (Map) toolkit.getDesktopProperty(GraphicsUtil.DESKTOP_HINTS_KEY);
Object aaHint = (desktopHints == null) ? null : desktopHints.get(RenderingHints.KEY_TEXT_ANTIALIASING);
if (aaHint != null
&& aaHint != RenderingHints.VALUE_TEXT_ANTIALIAS_OFF
&& aaHint != RenderingHints.VALUE_TEXT_ANTIALIAS_DEFAULT) {
LOGGER.fine(String.format("Setting '%s' = '%s'",
RenderingHints.KEY_TEXT_ANTIALIASING, aaHint));
LOGGER.fine(String.format("Setting '%s' = '%s'",
RenderingHints.KEY_TEXT_LCD_CONTRAST,
RenderingHints.KEY_TEXT_LCD_CONTRAST));
defaults.put(RenderingHints.KEY_TEXT_ANTIALIASING, aaHint);
defaults.put(RenderingHints.KEY_TEXT_LCD_CONTRAST,
desktopHints.get(RenderingHints.KEY_TEXT_LCD_CONTRAST));
}
}
}
private void loadFontProperties(final UIDefaults defaults) {
Properties fontSizeProps = PropertyLoader.loadProperties(DarkLaf.class,
FONT_SIZE_DEFAULTS_NAME,
FONT_PROPERTY_PATH);
PropertyLoader.putProperties(fontSizeProps, defaults);
Properties fontProps = PropertyLoader.loadProperties(DarkLaf.class,
FONT_DEFAULTS_NAME,
FONT_PROPERTY_PATH);
PropertyLoader.putProperties(fontProps, defaults);
}
private void patchOSFonts(final UIDefaults defaults, final Function, Font> mapper) {
PropertyLoader.replacePropertyEntriesOfType(Font.class, defaults, e -> true, mapper);
}
private Font mapMacOSFont(final Map.Entry entry) {
Font font = entry.getValue();
String fontName = SystemInfo.isMacOSCatalina ? MAC_OS_CATALINA_FONT_NAME_FALLBACK : MAC_OS_FONT_NAME;
Font macFont = new Font(fontName, font.getStyle(), font.getSize());
if (SystemInfo.isMacOSMojave) macFont = macFont.deriveFont(ENABLE_KERNING);
if (font instanceof UIResource) {
macFont = new DarkFontUIResource(macFont);
}
return macFont == null ? font : macFont;
}
private Font mapWindowsFont(final Map.Entry entry) {
Font font = entry.getValue();
if (!SystemInfo.isWindowsVista) return font;
Font windowsFont = new Font(WINDOWS_10_FONT_NAME, font.getStyle(), font.getSize());
if (font instanceof UIResource) {
windowsFont = new DarkFontUIResource(windowsFont);
}
return windowsFont;
}
private void setupKerningPerFont(final UIDefaults defaults, final Predicate kerningPredicate) {
PropertyLoader.replacePropertiesOfType(Font.class, defaults,
e -> kerningPredicate.test(e.getKey().toString()),
f -> {
Font font = f.deriveFont(ENABLE_KERNING);
if (f instanceof UIResource) font = new DarkFontUIResource(font);
return font;
});
}
private void applyFontRule(final Theme currentTheme, final UIDefaults defaults) {
FontSizeRule rule = currentTheme.getFontSizeRule();
if (rule == null || rule.getType() == FontSizeRule.AdjustmentType.NO_ADJUSTMENT) return;
PropertyLoader.replacePropertiesOfType(Font.class, defaults, f -> fontWithRule(f, rule));
}
private Font fontWithRule(final Font font, final FontSizeRule rule) {
if (font == null) return null;
float size = font.getSize2D();
float newSize = rule.adjustFontSize(size);
if (newSize == size) return font;
if (newSize <= 0) {
LOGGER.warning("Font " + font + " would be invisible after applying " + rule + ". Font won't be changed!");
return font;
}
Font withRule = font.deriveFont(newSize);
if (font instanceof UIResource
&& !(withRule instanceof UIResource)) {
withRule = new DarkFontUIResource(withRule);
}
return withRule;
}
}
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