color_preview.hpp

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#ifndef COLOR_PREVIEW_HPP
#define COLOR_PREVIEW_HPP
 
#include <QWidget>
 
namespace color_widgets {
 
class  ColorPreview : public QWidget
{
    Q_OBJECT
    Q_PROPERTY(QColor color READ color WRITE setColor NOTIFY colorChanged DESIGNABLE true)
    Q_PROPERTY(QColor comparisonColor READ comparisonColor WRITE setComparisonColor DESIGNABLE true)
    Q_PROPERTY(DisplayMode display_mode READ displayMode WRITE setDisplayMode DESIGNABLE true)
    Q_PROPERTY(QBrush background READ background WRITE setBackground DESIGNABLE true)
    Q_ENUMS(DisplayMode)
public:
    enum DisplayMode
    {
        NoAlpha,    
        AllAlpha,   
        SplitAlpha, 
        SplitColor  
    };
 
    explicit ColorPreview(QWidget *parent = 0);
    ~ColorPreview();
 
    QBrush background() const;
 
    void setBackground(const QBrush &bk);
 
    DisplayMode displayMode() const;
 
    void setDisplayMode(DisplayMode dm);
 
    QColor color() const;
 
    QColor comparisonColor() const;
 
    QSize sizeHint () const;
 
    void paint(QPainter &painter, QRect rect) const;
    
public slots:
    void setColor(const QColor &c);
 
    void setComparisonColor(const QColor &c);
 
signals:
    void clicked();
 
    void colorChanged(QColor);
 
protected:
    void paintEvent(QPaintEvent *);
    void resizeEvent(QResizeEvent *);
    void mouseReleaseEvent(QMouseEvent *ev);
    void mouseMoveEvent(QMouseEvent *ev);
 
private:
    class Private;
    Private * const p;
};
 
} // namespace color_widgets
 
#endif // COLOR_PREVIEW_HPP