/usr/include/Wt/Chart/WChartPalette is in libwt-dev 3.3.0-1build1.
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 | // This may look like C code, but it's really -*- C++ -*-
/*
* Copyright (C) 2008 Emweb bvba, Kessel-Lo, Belgium.
*
* See the LICENSE file for terms of use.
*/
#ifndef CHART_WCHART_PALETTE_H_
#define CHART_WCHART_PALETTE_H_
#include <Wt/WDllDefs.h>
namespace Wt {
class WBrush;
class WColor;
class WPen;
namespace Chart {
/*! \class WChartPalette Wt/Chart/WChartPalette Wt/Chart/WChartPalette
* \brief Abstract base class for styling rendered data series in charts.
*
* This class provides an interface for a palette which sets strokes
* and fill strokes for data in a \link WAbstractChart
* chart\endlink. A palette is an ordered list of styles, which is
* indexed by the chart to get a suitable style for a particular
* series (in case of WCartesianChart) or data row (in case of
* WPieChart). Each style is defined by a brush, two pen styles (one
* for borders, and one for plain lines), and a font color that is
* appropriate for drawing text within the brushed area.
*
* To use a custom palette, you should reimplement this class, and then
* use WAbstractChart::setPalette() to use an instance of the palette.
*
* \ingroup charts
*/
class WT_API WChartPalette
{
public:
/*! \brief Destructor.
*/
virtual ~WChartPalette();
/*! \brief Returns a brush from the palette.
*
* Returns the brush for the style with given <i>index</i>.
*/
virtual WBrush brush(int index) const = 0;
/*! \brief Returns a border pen from the palette.
*
* Returns the pen for stroking borders around an area filled using the
* brush at the same <i>index</i>.
*
* \sa strokePen(), brush()
*/
virtual WPen borderPen(int index) const = 0;
/*! \brief Returns a stroke pen from the palette.
*
* Returns the pen for stroking lines for the style with given <i>index</i>.
*
* \sa strokePen()
*/
virtual WPen strokePen(int index) const = 0;
/*! \brief Returns a font color from the palette.
*
* Returns a font color suitable for rendering text in the area filled
* with the brush at the same <i>index</i>.
*
* \sa brush()
*/
virtual WColor fontColor(int index) const = 0;
};
}
}
#endif // CHART_WCHART_PALETTE_H_
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