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Inverting colors feature

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Jakub Melka
2020-01-28 19:17:45 +01:00
parent 0bc64494fd
commit e4effbc29a
10 changed files with 112 additions and 10 deletions
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16
PdfForQtLib/sources/pdfutils.h
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@ -22,6 +22,7 @@
#include "pdfglobal.h"
#include <QRectF>
#include <QColor>
#include <QByteArray>
#include <QDataStream>
@ -429,6 +430,21 @@ constexpr bool isRectangleHorizontallyOverlapped(const QRectF& r1, const QRectF&
return isIntervalOverlap(r1.left(), r1.right(), r2.left(), r2.right());
}
inline QColor invertColor(QColor color)
{
qreal r = 0.0;
qreal g = 0.0;
qreal b = 0.0;
qreal a = 0.0;
color.getRgbF(&r, &g, &b, &a);
r = 1.0 - r;
g = 1.0 - g;
b = 1.0 - b;
return QColor::fromRgbF(r, g, b, a);
}
} // namespace pdf
#endif // PDFUTILS_H