PDF4QT/PdfForQtLib/sources/pdfwidgetutils.h

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// Copyright (C) 2019-2020 Jakub Melka
//
// This file is part of PdfForQt.
//
// PdfForQt is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// PdfForQt is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with PDFForQt. If not, see <https://www.gnu.org/licenses/>.
#ifndef PDFWIDGETUTILS_H
#define PDFWIDGETUTILS_H
#include "pdfglobal.h"
#include <QWidget>
namespace pdf
{
class PDFFORQTLIBSHARED_EXPORT PDFWidgetUtils
{
public:
PDFWidgetUtils() = delete;
/// Converts size in MM to pixel size
static int getPixelSize(QPaintDevice* device, pdf::PDFReal sizeMM);
/// Scale horizontal DPI value
/// \param device Paint device to obtain logical DPI for scaling
static int scaleDPI_x(QPaintDevice* device, int unscaledSize);
/// Scale vertical DPI value
/// \param device Paint device to obtain logical DPI for scaling
static int scaleDPI_y(QPaintDevice* device, int unscaledSize);
/// Scale horizontal DPI value
/// \param device Paint device to obtain logical DPI for scaling
static PDFReal scaleDPI_x(QPaintDevice* device, PDFReal unscaledSize);
/// Scales widget based on DPI
/// \param widget Widget to be scaled
/// \param unscaledSize Unscaled size of the widget
static void scaleWidget(QWidget* widget, QSize unscaledSize);
/// Scales size based on DPI
/// \param device Paint device to obtain logical DPI for scaling
/// \param unscaledSize Unscaled size
static QSize scaleDPI(QPaintDevice* widget, QSize unscaledSize);
};
} // namespace pdf
#endif // PDFWIDGETUTILS_H