Library renamed to Pdf4Qt

Pdf4QtLib/sources/pdfwidgetutils.h

@@ -0,0 +1,61 @@
+//    Copyright (C) 2019-2020 Jakub Melka
+//
+//    This file is part of Pdf4Qt.
+//
+//    Pdf4Qt 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.
+//
+//    Pdf4Qt 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 Pdf4Qt.  If not, see <https://www.gnu.org/licenses/>.
+
+#ifndef PDFWIDGETUTILS_H
+#define PDFWIDGETUTILS_H
+
+#include "pdfglobal.h"
+
+#include <QWidget>
+
+namespace pdf
+{
+
+class Pdf4QtLIBSHARED_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