qt_demoe/third/3rd_qwt/qwt_column_symbol.h

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/* -*- 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_COLUMN_SYMBOL_H
#define QWT_COLUMN_SYMBOL_H
#include "qwt_global.h"
#include "qwt_interval.h"
#include <qpen.h>
#include <qsize.h>
#include <qrect.h>
class QPainter;
class QPalette;
class QRect;
class QwtText;
/*!
\brief Directed rectangle representing bounding rectangle and orientation
of a column.
*/
class QWT_EXPORT QwtColumnRect
{
public:
//! Direction of the column
enum Direction
{
//! From left to right
LeftToRight,
//! From right to left
RightToLeft,
//! From bottom to top
BottomToTop,
//! From top to bottom
TopToBottom
};
//! Build an rectangle with invalid intervals directed BottomToTop.
QwtColumnRect():
direction( BottomToTop )
{
}
//! \return A normalized QRect built from the intervals
QRectF toRect() const
{
QRectF r( hInterval.minValue(), vInterval.minValue(),
hInterval.maxValue() - hInterval.minValue(),
vInterval.maxValue() - vInterval.minValue() );
r = r.normalized();
if ( hInterval.borderFlags() & QwtInterval::ExcludeMinimum )
r.adjust( 1, 0, 0, 0 );
if ( hInterval.borderFlags() & QwtInterval::ExcludeMaximum )
r.adjust( 0, 0, -1, 0 );
if ( vInterval.borderFlags() & QwtInterval::ExcludeMinimum )
r.adjust( 0, 1, 0, 0 );
if ( vInterval.borderFlags() & QwtInterval::ExcludeMaximum )
r.adjust( 0, 0, 0, -1 );
return r;
}
//! \return Orientation
Qt::Orientation orientation() const
{
if ( direction == LeftToRight || direction == RightToLeft )
return Qt::Horizontal;
return Qt::Vertical;
}
//! Interval for the horizontal coordinates
QwtInterval hInterval;
//! Interval for the vertical coordinates
QwtInterval vInterval;
//! Direction
Direction direction;
};
//! A drawing primitive for columns
class QWT_EXPORT QwtColumnSymbol
{
public:
/*!
Style
\sa setStyle(), style()
*/
enum Style
{
//! No Style, the symbol draws nothing
NoStyle = -1,
/*!
The column is painted with a frame depending on the frameStyle()
and lineWidth() using the palette().
*/
Box,
/*!
Styles >= QwtColumnSymbol::UserStyle are reserved for derived
classes of QwtColumnSymbol that overload draw() with
additional application specific symbol types.
*/
UserStyle = 1000
};
/*!
Frame Style used in Box style().
\sa Style, setFrameStyle(), frameStyle(), setStyle(), setPalette()
*/
enum FrameStyle
{
//! No frame
NoFrame,
//! A plain frame style
Plain,
//! A raised frame style
Raised
};
public:
QwtColumnSymbol( Style = NoStyle );
virtual ~QwtColumnSymbol();
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void setFrameStyle( FrameStyle );
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FrameStyle frameStyle() const;
void setLineWidth( int width );
int lineWidth() const;
void setPalette( const QPalette & );
const QPalette &palette() const;
void setStyle( Style );
Style style() const;
virtual void draw( QPainter *, const QwtColumnRect & ) const;
protected:
void drawBox( QPainter *, const QwtColumnRect & ) const;
private:
class PrivateData;
PrivateData* d_data;
};
#endif