com.github.weisj.darklaf.platform.windows.WindowsThemePreferenceProvider Maven / Gradle / Ivy

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A themeable Look and Feel for java swing
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/*
 * 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.platform.windows;

import java.awt.*;
import java.util.function.Consumer;

import com.github.weisj.darklaf.theme.info.*;

public class WindowsThemePreferenceProvider implements ThemePreferenceProvider {

    private final PreferredThemeStyle fallbackStyle =
            new PreferredThemeStyle(ContrastRule.STANDARD, ColorToneRule.LIGHT);
    private final WindowsPreferenceMonitor monitor = new WindowsPreferenceMonitor(this);
    private Consumer callback;

    @Override
    public PreferredThemeStyle getPreference() {
        if (!WindowsLibrary.get().isLoaded()) return fallbackStyle;
        boolean darkMode = JNIThemeInfoWindows.isDarkThemeEnabled();
        boolean highContrast = JNIThemeInfoWindows.isHighContrastEnabled();
        long fontScaling = JNIThemeInfoWindows.getFontScaleFactor();
        int accentColorRGB = JNIThemeInfoWindows.getAccentColor();
        return create(highContrast, darkMode, fontScaling, accentColorRGB);
    }

    private PreferredThemeStyle create(final boolean highContrast, final boolean darkMode, final long fontScaling,
            final int accentColorRGB) {
        ContrastRule contrastRule = highContrast ? ContrastRule.HIGH_CONTRAST : ContrastRule.STANDARD;
        ColorToneRule toneRule = darkMode ? ColorToneRule.DARK : ColorToneRule.LIGHT;
        FontSizeRule fontSizeRule = FontSizeRule.relativeAdjustment(fontScaling / 100f);
        AccentColorRule accentColorRule = AccentColorRule.fromColor(createColorFromRGB(accentColorRGB));
        return new PreferredThemeStyle(contrastRule, toneRule, accentColorRule, fontSizeRule);
    }

    private Color createColorFromRGB(final int rgb) {
        if (rgb == 0) return null;
        return new Color(rgb);
    }

    void reportPreferenceChange(final boolean highContrast, final boolean darkMode, final long fontScaleFactor,
            final int accentColorRGB) {
        if (callback != null) {
            PreferredThemeStyle style = create(highContrast, darkMode, fontScaleFactor, accentColorRGB);
            callback.accept(style);
        }
    }

    @Override
    public void setReporting(final boolean reporting) {
        if (reporting && !WindowsLibrary.get().isLoaded()) WindowsLibrary.get().updateLibrary();
        synchronized (monitor) {
            monitor.setRunning(reporting);
        }
    }

    @Override
    public boolean isReporting() {
        return monitor.isRunning();
    }

    @Override
    public void initialize() {
        WindowsLibrary.get().updateLibrary();
    }

    @Override
    public void setCallback(final Consumer callback) {
        this.callback = callback;
    }

    @Override
    public boolean canReport() {
        return true;
    }

    @Override
    public boolean supportsNativeAccentColor() {
        return WindowsLibrary.get().isLoaded();
    }

    @Override
    public boolean supportsNativeFontSize() {
        return WindowsLibrary.get().isLoaded();
    }

    @Override
    public boolean supportsNativeTheme() {
        return WindowsLibrary.get().isLoaded();
    }
}