qtgradientwidget_p.h

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of Qt Designer. This header file may change from version to version
// without notice, or even be removed.
//
// We mean it.
//
 
#ifndef QTGRADIENTWIDGET_H
#define QTGRADIENTWIDGET_H
 
#include <QtWidgets/QWidget>
 
QT_BEGIN_NAMESPACE
 
class QtGradientWidget : public QWidget
{
    Q_OBJECT
    Q_PROPERTY(bool backgroundCheckered READ isBackgroundCheckered WRITE setBackgroundCheckered)
public:
    QtGradientWidget(QWidget *parent = 0);
    ~QtGradientWidget();
 
    QSize minimumSizeHint() const override;
    QSize sizeHint() const override;
    int heightForWidth(int w) const override;
 
    bool isBackgroundCheckered() const;
    void setBackgroundCheckered(bool checkered);
 
    QGradientStops gradientStops() const;
 
    void setGradientType(QGradient::Type type);
    QGradient::Type gradientType() const;
 
    void setGradientSpread(QGradient::Spread spread);
    QGradient::Spread gradientSpread() const;
 
    void setStartLinear(QPointF point);
    QPointF startLinear() const;
 
    void setEndLinear(QPointF point);
    QPointF endLinear() const;
 
    void setCentralRadial(QPointF point);
    QPointF centralRadial() const;
 
    void setFocalRadial(QPointF point);
    QPointF focalRadial() const;
 
    void setRadiusRadial(qreal radius);
    qreal radiusRadial() const;
 
    void setCentralConical(QPointF point);
    QPointF centralConical() const;
 
    void setAngleConical(qreal angle);
    qreal angleConical() const;
 
public slots:
    void setGradientStops(const QGradientStops &stops);
 
signals:
 
    void startLinearChanged(const QPointF &point);
    void endLinearChanged(const QPointF &point);
    void centralRadialChanged(const QPointF &point);
    void focalRadialChanged(const QPointF &point);
    void radiusRadialChanged(qreal radius);
    void centralConicalChanged(const QPointF &point);
    void angleConicalChanged(qreal angle);
 
protected:
    void paintEvent(QPaintEvent *e) override;
    void mousePressEvent(QMouseEvent *e) override;
    void mouseReleaseEvent(QMouseEvent *e) override;
    void mouseMoveEvent(QMouseEvent *e) override;
    void mouseDoubleClickEvent(QMouseEvent *e) override;
 
private:
    QScopedPointer<class QtGradientWidgetPrivate> d_ptr;
    Q_DECLARE_PRIVATE(QtGradientWidget)
    Q_DISABLE_COPY_MOVE(QtGradientWidget)
};
 
QT_END_NAMESPACE
 
#endif