ColorSquareWidget.h

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#ifndef COLORSQUAREWIDGET_H
#define COLORSQUAREWIDGET_H
 
#include <QWidget>
#include <QPixmap>
 
class MainWindow;
 
class ColorSquareWidget : public QWidget {
    Q_OBJECT
private:
    struct Private;
    Private *m;
    MainWindow *mainwindow();
    void updatePixmap(bool force);
    QImage createImage(int w, int h);
    void press(const QPoint &pos);
protected:
    void paintEvent(QPaintEvent *);
    void mousePressEvent(QMouseEvent *event);
    void mouseMoveEvent(QMouseEvent *event);
public:
    explicit ColorSquareWidget(QWidget *parent = 0);
    ~ColorSquareWidget();
    void setHue(int h);
signals:
    void changeColor(const QColor &color);
 
};
 
#endif // COLORSQUAREWIDGET_H