dstackwidget.h

// SPDX-FileCopyrightText: 2015 - 2022 UnionTech Software Technology Co., Ltd.
//
// SPDX-License-Identifier: LGPL-3.0-or-later
 
#ifndef DSTACKWIDGET_H
#define DSTACKWIDGET_H
 
#include <QWidget>
#include <QVariantAnimation>
 
#include <DObject>
#include <dtkwidget_global.h>
 
DWIDGET_BEGIN_NAMESPACE
 
class DStackWidget;
class DAbstractStackWidgetTransitionPrivate;
class DAbstractStackWidgetTransition : public QObject, public DTK_CORE_NAMESPACE::DObject
{
public:
    enum TransitionType{
        Push,
        Pop
    };
 
    struct TransitionInfo{
        TransitionType type;
        DStackWidget *stackWidget = nullptr;
        QWidget *oldWidget = nullptr;
        QWidget *newWidget = nullptr;
    };
 
    explicit DAbstractStackWidgetTransition(QObject *parent = 0);
 
    virtual void beginTransition(const TransitionInfo &info);
    virtual QVariantAnimation *animation() const;
 
protected:
    virtual void updateVariant(const QVariant& variant) = 0;
 
protected:
    explicit DAbstractStackWidgetTransition(DAbstractStackWidgetTransitionPrivate &dd,
                                            QObject *parent = 0);
 
    const TransitionInfo &info() const;
 
private:
    D_DECLARE_PRIVATE(DAbstractStackWidgetTransition)
};
 
class DSlideStackWidgetTransition : public DAbstractStackWidgetTransition
{
    Q_OBJECT
 
public:
    explicit DSlideStackWidgetTransition(QObject *parent = 0);
 
    void beginTransition(const TransitionInfo &info) Q_DECL_OVERRIDE;
 
private Q_SLOTS:
    void updateVariant(const QVariant &variant) Q_DECL_OVERRIDE;
};
 
class DStackWidgetPrivate;
class DStackWidget : public QWidget, public DTK_CORE_NAMESPACE::DObject
{
    Q_OBJECT
 
    Q_PROPERTY(bool busy READ busy NOTIFY busyChanged FINAL)
    Q_PROPERTY(int depth READ depth NOTIFY depthChanged FINAL)
    Q_PROPERTY(int currentIndex READ currentIndex NOTIFY currentIndexChanged)
    Q_PROPERTY(QWidget* currentWidget READ currentWidget NOTIFY currentWidgetChanged)
    Q_PROPERTY(DAbstractStackWidgetTransition* transition READ transition WRITE setTransition)
    Q_PROPERTY(int animationDuration READ animationDuration WRITE setAnimationDuration)
    Q_PROPERTY(QEasingCurve::Type animationType READ animationType WRITE setAnimationType)
 
public:
    explicit DStackWidget(QWidget *parent = 0);
 
    bool busy() const;
    int depth() const;
 
    int currentIndex() const;
    QWidget* currentWidget() const;
 
    DAbstractStackWidgetTransition* transition() const;
    int animationDuration() const;
    QEasingCurve::Type animationType() const;
 
public Q_SLOTS:
    int pushWidget(QWidget *widget, bool enableTransition = true);
    void insertWidget(int index, QWidget *widget, bool enableTransition = true);
 
    void popWidget(QWidget *widget = nullptr, bool isDelete = true,
                  int count = 1, bool enableTransition = true);
    void clear();
 
    int indexOf(QWidget *widget) const;
    QWidget* getWidgetByIndex(int index) const;
 
    void setTransition(DAbstractStackWidgetTransition* transition);
    void setAnimationDuration(int animationDuration);
    void setAnimationType(QEasingCurve::Type animationType);
 
Q_SIGNALS:
    void busyChanged(bool busy);
    void depthChanged(int depth);
 
    void currentIndexChanged(int currentIndex);
    void currentWidgetChanged(QWidget* currentWidget);
 
    void widgetDepthChanged(QWidget *widget, int depth);
 
    void switchWidgetFinished();
 
protected:
    explicit DStackWidget(DStackWidgetPrivate &dd, QWidget *parent = 0);
 
    void setCurrentIndex(int currentIndex,
                         DAbstractStackWidgetTransition::TransitionType type = DAbstractStackWidgetTransition::Push,
                         bool enableTransition = true);
    void setCurrentWidget(QWidget* currentWidget,
                          DAbstractStackWidgetTransition::TransitionType type = DAbstractStackWidgetTransition::Push,
                          bool enableTransition = true);
 
private:
    Q_DISABLE_COPY(DStackWidget)
    D_DECLARE_PRIVATE(DStackWidget)
};
 
DWIDGET_END_NAMESPACE
 
#endif // DSTACKWIDGET_H