/usr/include/qgis/qgsprevieweffect.h is in libqgis-dev 2.4.0-1+b1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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qgsprevieweffect.h
-------------------
begin : March 2014
copyright : (C) 2014 by Nyall Dawson
email : nyall dot dawson at gmail dot com
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#ifndef QGSPREVIEWEFFECT_H
#define QGSPREVIEWEFFECT_H
#include <QGraphicsEffect>
/** \ingroup gui
* A graphics effect which can be applied to a widget to simulate various printing and
* color blindness modes.
*/
class GUI_EXPORT QgsPreviewEffect: public QGraphicsEffect
{
Q_OBJECT
public:
enum PreviewMode
{
PreviewGrayscale,
PreviewMono,
PreviewProtanope,
PreviewDeuteranope
};
QgsPreviewEffect( QObject* parent );
~QgsPreviewEffect();
/**Sets the mode for the preview effect, which controls how the effect modifies a widgets appearance.
* @param mode PreviewMode to use to draw the widget
* @note added in 2.3
* @see mode
*/
void setMode( PreviewMode mode );
/**Returns the mode used for the preview effect.
* @returns PreviewMode currently used by the effect
* @note added in 2.3
* @see setMode
*/
PreviewMode mode() const { return mMode; }
protected:
virtual void draw( QPainter *painter );
private:
PreviewMode mMode;
QRgb simulateColorBlindness( QRgb &originalColor, PreviewMode type );
void simulateProtanopeLMS( double &L, double &M, double &S );
void simulateDeuteranopeLMS( double &L, double &M, double &S );
};
#endif // QGSPREVIEWEFFECT_H
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