/usr/include/qwt-qt4/qwt_plot_canvas.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 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 | /* -*- 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
*****************************************************************************/
// vim: expandtab
#ifndef QWT_PLOT_CANVAS_H
#define QWT_PLOT_CANVAS_H
#include <qframe.h>
#include <qpen.h>
#include "qwt_global.h"
class QwtPlot;
class QPixmap;
/*!
\brief Canvas of a QwtPlot.
\sa QwtPlot
*/
class QWT_EXPORT QwtPlotCanvas : public QFrame
{
Q_OBJECT
public:
/*!
\brief Paint attributes
- PaintCached\n
Paint double buffered and reuse the content of the pixmap buffer
for some spontaneous repaints that happen when a plot gets unhidden,
deiconified or changes the focus.
Disabling the cache will improve the performance for
incremental paints (using QwtPlotCurve::draw).
- PaintPacked\n
Suppress system background repaints and paint it together with
the canvas contents.
Painting packed might avoid flickering for expensive repaints,
when there is a notable gap between painting the background
and the plot contents.
The default setting enables PaintCached and PaintPacked
\sa setPaintAttribute(), testPaintAttribute(), paintCache()
*/
enum PaintAttribute
{
PaintCached = 1,
PaintPacked = 2
};
/*!
\brief Focus indicator
- NoFocusIndicator\n
Don't paint a focus indicator
- CanvasFocusIndicator\n
The focus is related to the complete canvas.
Paint the focus indicator using paintFocus()
- ItemFocusIndicator\n
The focus is related to an item (curve, point, ...) on
the canvas. It is up to the application to display a
focus indication using f.e. highlighting.
\sa setFocusIndicator(), focusIndicator(), paintFocus()
*/
enum FocusIndicator
{
NoFocusIndicator,
CanvasFocusIndicator,
ItemFocusIndicator
};
explicit QwtPlotCanvas(QwtPlot *);
virtual ~QwtPlotCanvas();
QwtPlot *plot();
const QwtPlot *plot() const;
void setFocusIndicator(FocusIndicator);
FocusIndicator focusIndicator() const;
void setPaintAttribute(PaintAttribute, bool on = true);
bool testPaintAttribute(PaintAttribute) const;
QPixmap *paintCache();
const QPixmap *paintCache() const;
void invalidatePaintCache();
void replot();
protected:
virtual void hideEvent(QHideEvent *);
virtual void paintEvent(QPaintEvent *);
virtual void drawContents(QPainter *);
virtual void drawFocusIndicator(QPainter *);
void drawCanvas(QPainter *painter = NULL);
private:
void setSystemBackground(bool);
class PrivateData;
PrivateData *d_data;
};
#endif
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