okular/core/utils.h
Albert Astals Cid 8a36e7350d Make Utils::realDpi work on QWindow not on QWidget
Small step towards the goal of okularcore not linking to QWidgets
2022-01-27 19:25:30 +01:00

55 lines
1.2 KiB
C++

/*
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; */