57 lines
1.4 KiB
C++
57 lines
1.4 KiB
C++
|
#ifndef W_F_PALETTE_HPP__
|
||
|
|
#define W_F_PALETTE_HPP__
|
||
|
|
|
||
|
|
#include <QMetaType>
|
||
|
|
#include <QList>
|
||
|
|
#include <QVector>
|
||
|
|
#include <QColor>
|
||
|
|
|
||
|
|
class QString;
|
||
|
|
|
||
|
|
//
|
||
|
|
// Class WFPalette
|
||
|
|
//
|
||
|
|
// Encapulates a waterfall palette description. A colour gradient
|
||
|
|
// over 256 intervals is described by a list of RGB colour triplets.
|
||
|
|
// The list of colours are use to interpolate the full 256 interval
|
||
|
|
// waterfall colour gradient.
|
||
|
|
//
|
||
|
|
// Responsibilities
|
||
|
|
//
|
||
|
|
// Construction from a string which is a path to a file containing
|
||
|
|
// colour descriptions in the form rrr;ggg;bbb on up to 256
|
||
|
|
// consecutive lines, where rrr, ggg and, bbb are integral numbers in
|
||
|
|
// the range 0<=n<256.
|
||
|
|
//
|
||
|
|
// Construction from a list of QColor instances. Up to the first 256
|
||
|
|
// list elements are used.
|
||
|
|
//
|
||
|
|
// Includes a design GUI to create or adjust a WFPalette.
|
||
|
|
//
|
||
|
|
class WFPalette
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
using Colours = QList<QColor>;
|
||
|
|
|
||
|
|
WFPalette () = default;
|
||
|
|
explicit WFPalette (Colours const&);
|
||
|
|
explicit WFPalette (QString const& file_path);
|
||
|
|
WFPalette (WFPalette const&) = default;
|
||
|
|
WFPalette& operator = (WFPalette const&) = default;
|
||
|
|
|
||
|
|
Colours colours () const {return colours_;}
|
||
|
|
|
||
|
|
// interpolate a gradient over 256 steps
|
||
|
|
QVector<QColor> interpolate () const;
|
||
|
|
|
||
|
|
// returns true if colours have been modified
|
||
|
|
bool design ();
|
||
|
|
|
||
|
|
private:
|
||
|
|
Colours colours_;
|
||
|
|
};
|
||
|
|
|
||
|
|
Q_DECLARE_METATYPE (WFPalette::Colours);
|
||
|
|
|
||
|
|
#endif
|