package org.saturnclient.ui.elements;

import org.saturnclient.config.Theme;
import org.saturnclient.ui.RenderScope;
import org.saturnclient.ui.resources.Fonts;

/**
 * The shared look of input fields: a faint box whose outline brightens on hover
 * and turns to the accent color while focused.
 */
public final class Field {
    /** Height of the fields in settings rows */
    public static final int HEIGHT = 32;
    public static final float TEXT_SCALE = 0.68f;

    private Field() {
    }

    public static void drawBox(RenderScope renderScope, int width, int height, boolean hovered, boolean focused) {
        int border = focused ? Theme.withAlpha(0.6f, Theme.ACCENT.value)
                : hovered ? Theme.withAlpha(0.25f, Theme.FOREGROUND.value)
                        : Theme.withAlpha(0.1f, Theme.FOREGROUND.value);

        renderScope.drawRoundedRectangle(0, 0, width, height, Theme.WIDGET_RADIUS.value, 1,
                Theme.withAlpha(0.06f, Theme.FOREGROUND.value), border);
    }

    /**
     * The y at which text drawn at {@code scale} is vertically centered in a
     * field of the given height.
     */
    public static int textY(int height, float scale) {
        return (height - (int) (Fonts.getHeight() * scale)) / 2;
    }

    /**
     * Draws {@code text} centered in a field of the given size.
     */
    public static void drawCenteredText(RenderScope renderScope, String text, int width, int height, int font,
            int color) {
        int x = (width - (int) (Fonts.getWidth(text, font) * TEXT_SCALE)) / 2;
        renderScope.drawText(TEXT_SCALE, text, x, textY(height, TEXT_SCALE), font, color);
    }
}