/usr/include/qwt-qt4/qwt_paint_buffer.h is in libqwt5-qt4-dev 5.2.3-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 | /* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
* Qwt Widget Library
* Copyright (C) 1997 Josef Wilgen
* Copyright (C) 2002 Uwe Rathmann
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the Qwt License, Version 1.0
*****************************************************************************/
#ifndef QWT_PAINT_BUFFER_H
#define QWT_PAINT_BUFFER_H 1
#include <qglobal.h>
#if QT_VERSION < 0x040000
#include <qpixmap.h>
#include "qwt_global.h"
class QPainter;
/*!
\brief Paint buffer for Qwt widgets
QwtPaintBuffer offers a simple way to en/disable double buffering.
Double buffering is enabled as default and in general there will be
no reason to change this.
*/
class QWT_EXPORT QwtPaintBuffer
{
public:
explicit QwtPaintBuffer();
explicit QwtPaintBuffer(QPaintDevice *, const QRect &, QPainter *p = NULL);
virtual ~QwtPaintBuffer();
void open(QPaintDevice *, const QRect &, QPainter *p = NULL);
void close();
QPainter *painter();
const QPaintDevice *device();
static void setEnabled(bool enable);
static bool isEnabled();
//! Return Buffer used for double buffering
const QPixmap &buffer() const { return d_pixBuffer; }
protected:
void flush();
private:
QPixmap d_pixBuffer;
QRect d_rect;
QPaintDevice *d_device; // use QGuardedPtr
QPainter *d_painter; // use QGuardedPtr
QPainter *d_devicePainter; // use QGuardedPtr
static bool d_enabled;
};
#endif // QT_VERSION < 0x040000
#endif
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