/*
 * Copyright 2020-2024 MicroEJ Corp. All rights reserved.
 * This library is provided in source code for use, modification and test, subject to license terms.
 * Any modification of the source code will break MicroEJ Corp. warranties on the whole library.
 */
package ej.mwt.style.dimension;

import ej.annotation.Nullable;
import ej.mwt.Widget;
import ej.mwt.util.Rectangle;
import ej.mwt.util.Size;

/**
 * Dimension which fits the optimal size of the widget.
 */
public class OptimalDimension implements Dimension {

    /**
     * Optimal dimension using widget's optimal width and height.
     */
    public static final OptimalDimension OPTIMAL_DIMENSION_XY = new OptimalDimension(true, true);

    /**
     * Optimal dimension using widget's optimal width.
     */
    public static final OptimalDimension OPTIMAL_DIMENSION_X = new OptimalDimension(true, false);

    /**
     * Optimal dimension using widget's optimal height.
     */
    public static final OptimalDimension OPTIMAL_DIMENSION_Y = new OptimalDimension(false, true);

    @Override
    public void getAvailableSize(Widget widget, int availableWidth, int availableHeight, Size availableSize) {
        // Nothing to do.
    }

    @Override
    public void computeOptimalSize(Widget widget, int availableWidth, int availableHeight, Size optimalSize) {
        // Nothing to do.
    }

    @Override
    public void layOut(Widget widget, Rectangle bounds) {
        DimensionHelper.layOut(widget, bounds, this.useOptimalWidth, this.useOptimalHeight, widget.getWidth(), widget.getHeight());
    }

    @Override
    public boolean equals(@Nullable Object obj) {
        if (obj != null && getClass() == obj.getClass()) {
            OptimalDimension dimension = (OptimalDimension) obj;
            return (this.useOptimalWidth == dimension.useOptimalWidth && this.useOptimalHeight == dimension.useOptimalHeight);
        }
        return false;
    }

    @Override
    public int hashCode() {
        return (this.useOptimalWidth ? 1 : 0) | (this.useOptimalHeight ? 2 : 0);
    }
}