termux-app

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package com.termux.shared.theme;
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import android.app.Activity;
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import android.content.Context;
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import android.content.res.Configuration;
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import android.content.res.TypedArray;
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import androidx.appcompat.app.AppCompatActivity;
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public class ThemeUtils {
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    public static final int ATTR_TEXT_COLOR_PRIMARY = android.R.attr.textColorPrimary;
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    public static final int ATTR_TEXT_COLOR_SECONDARY = android.R.attr.textColorSecondary;
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    public static final int ATTR_TEXT_COLOR = android.R.attr.textColor;
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    public static final int ATTR_TEXT_COLOR_LINK = android.R.attr.textColorLink;
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    /**
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     * Will return true if system has enabled night mode.
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     * https://developer.android.com/guide/topics/resources/providing-resources#NightQualifier
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     */
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    public static boolean isNightModeEnabled(Context context) {
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        if (context == null) return false;
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        return (context.getResources().getConfiguration().uiMode & Configuration.UI_MODE_NIGHT_MASK) == Configuration.UI_MODE_NIGHT_YES;
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    }
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    /** Will return true if mode is set to {@link NightMode#TRUE}, otherwise will return true if
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     * mode is set to {@link NightMode#SYSTEM} and night mode is enabled by system. */
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    public static boolean shouldEnableDarkTheme(Context context, String name) {
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        if (NightMode.TRUE.getName().equals(name))
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            return true;
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        else if (NightMode.FALSE.getName().equals(name))
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            return false;
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        else if (NightMode.SYSTEM.getName().equals(name)) {
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            return isNightModeEnabled(context);
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        } else {
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            return false;
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        }
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    }
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    /** Get {@link #ATTR_TEXT_COLOR_PRIMARY} value being used by current theme. */
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    public static int getTextColorPrimary(Context context) {
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        return getSystemAttrColor(context, ATTR_TEXT_COLOR_PRIMARY);
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    }
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    /** Get {@link #ATTR_TEXT_COLOR_SECONDARY} value being used by current theme. */
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    public static int getTextColorSecondary(Context context) {
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        return getSystemAttrColor(context, ATTR_TEXT_COLOR_SECONDARY);
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    }
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    /** Get {@link #ATTR_TEXT_COLOR} value being used by current theme. */
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    public static int getTextColor(Context context) {
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        return getSystemAttrColor(context, ATTR_TEXT_COLOR);
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    }
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    /** Get {@link #ATTR_TEXT_COLOR_LINK} value being used by current theme. */
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    public static int getTextColorLink(Context context) {
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        return getSystemAttrColor(context, ATTR_TEXT_COLOR_LINK);
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    }
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    /** Wrapper for {@link #getSystemAttrColor(Context, int, int)} with {@code def} value {@code 0}. */
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    public static int getSystemAttrColor(Context context, int attr) {
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        return getSystemAttrColor(context, attr, 0);
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    }
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    /**
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     * Get a values defined by the current heme listed in attrs.
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     *
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     * @param context The context for operations. It must be an instance of {@link Activity} or
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     *               {@link AppCompatActivity} or one with which a theme attribute can be got.
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     *                Do no use application context.
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     * @param attr The attr id.
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     * @param def The def value to return.
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     * @return Returns the {@code attr} value if found, otherwise {@code def}.
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     */
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    public static int getSystemAttrColor(Context context, int attr, int def) {
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        TypedArray typedArray = context.getTheme().obtainStyledAttributes(new int[] { attr });
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        int color = typedArray.getColor(0, def);
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        typedArray.recycle();
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        return color;
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    }
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}
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