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PdfForQtViewer/pdfwidgetutils.cpp

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+//    Copyright (C) 2019 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/>.
+
+#include "pdfwidgetutils.h"
+
+
+namespace pdfviewer
+{
+
+int PDFWidgetUtils::getPixelSize(QWidget* widget, pdf::PDFReal sizeMM)
+{
+    const int width = widget->width();
+    const int height = widget->height();
+
+    if (width > height)
+    {
+        return pdf::PDFReal(width) * sizeMM / pdf::PDFReal(widget->widthMM());
+    }
+    else
+    {
+        return pdf::PDFReal(height) * sizeMM / pdf::PDFReal(widget->heightMM());
+    }
+}
+
+} // namespace pdfviewer