utils.h

/*
    SPDX-FileCopyrightText: 2006 Luigi Toscano <luigi.toscano@tiscali.it>
 
    SPDX-License-Identifier: GPL-2.0-or-later
*/
 
#ifndef _OKULAR_UTILS_H_
#define _OKULAR_UTILS_H_
 
#include "area.h"
#include "okularcore_export.h"
 
class QRect;
class QImage;
 
namespace Okular
{
/**
 * @short General utility functions.
 *
 * This class contains some static functions of general utility.
 */
class OKULARCORE_EXPORT Utils
{
public:
    /**
     * Rotate the rect \p source in the area \p width x \p height with the
     * specified \p orientation .
     */
    static QRect rotateRect(const QRect source, int width, int height, int orientation);
 
    /**
     * Return the real DPI of the display containing given window
     *
     * On X11, it can indicate the real horizontal DPI value without any Xrdb
     * setting. Otherwise, returns the same as realDpiX/Y(),
     *
     * @since 22.04
     */
    static QSizeF realDpi(const QWindow *windowOnScreen);
 
    /**
     * Compute the smallest rectangle that contains all non-white pixels in image),
     * in normalized [0,1] coordinates.
     *
     * @since 0.7 (KDE 4.1)
     */
    static NormalizedRect imageBoundingBox(const QImage *image);
};
 
}
 
#endif
 
/* kate: replace-tabs on; indent-width 4; */