fancytabbar.h

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#ifndef FANCYTABWIDGET_H
#define FANCYTABWIDGET_H

#include <QIcon>
#include <QWidget>

#include <QTimer>
#include <QPropertyAnimation>

class QPainter;

#include "fancytab.h"

class FancyTabBar : public QWidget
{
    Q_OBJECT

public:
    enum struct TabBarPosition { Above, Below, Left, Right };

    FancyTabBar(const TabBarPosition position, QWidget *parent = 0);
    ~FancyTabBar();


    bool event(QEvent *event);

    void paintEvent(QPaintEvent *event);
    void paintTab(QPainter *painter, int tabIndex) const;
    void mousePressEvent(QMouseEvent *);
    void mouseMoveEvent(QMouseEvent *);
    void enterEvent(QEvent *);
    void leaveEvent(QEvent *);
    bool validIndex(int index) const { return index >= 0 && index < mAttachedTabs.count(); }

    void setOrientation(const TabBarPosition p) {mPosition = p;}
    QSize sizeHint() const;
    QSize minimumSizeHint() const;

    void setTabEnabled(int index, bool enable);
    bool isTabEnabled(int index) const;

    void insertTab(int index, const QIcon &icon, const QString &label) {
        FancyTab *tab = new FancyTab(this);
        tab->icon = icon;
        tab->text = label;
        mAttachedTabs.insert(index, tab);
    }

    void removeTab(int index) {
        FancyTab *tab = mAttachedTabs.takeAt(index);
        delete tab;
    }
    void setCurrentIndex(int index);
    int currentIndex() const { return mCurrentIndex; }

    void setTabToolTip(int index, QString toolTip) { mAttachedTabs[index]->toolTip = toolTip; }
    QString tabToolTip(int index) const { return mAttachedTabs.at(index)->toolTip; }

    QIcon tabIcon(int index) const { return mAttachedTabs.at(index)->icon; }
    QString tabText(int index) const { return mAttachedTabs.at(index)->text; }
    int count() const {return mAttachedTabs.count(); }
    QRect tabRect(int index) const;

signals:
    void currentChanged(int);

public slots:
    void emitCurrentIndex();

private:
    enum struct Corner { OutsideBeginning, OutsideEnd, InsideBeginning, InsideEnd };
    QPoint getCorner(const QRect& rect, const Corner corner) const;

    // You can pass this method a QRect and tell it to move its edges to the outside (+)
    // or inside (-) of the rect. For example, with a TabBar at the Above,
    //
    //      adjustRect(QRect(0,0,10,10), 1, 2, 3, -4)  // thats a 10 by 10 QRect, starting at 0/0
    //
    //  gives
    //
    //      QRect(-3, -1, 9, 13) // 9 by 13 rect, starting at -3/-1.
    QRect adjustRect(const QRect& rect, const qint8 offsetOutside, const qint8 offsetInside, const qint8 offsetStart, const qint8 offsetEnd) const;

    // Same with a point. + means towards Outside/End, - means towards Inside/Beginning
    QPoint adjustPoint(const QPoint& point, const qint8 offsetInsideOutside, const qint8 offsetBeginningEnd) const;

    TabBarPosition mPosition;
    static const int m_rounding;
    static const int m_textPadding;
    QRect mHoverRect;
    int mHoverIndex;
    int mCurrentIndex;
    QList<FancyTab*> mAttachedTabs;
    QTimer mTimerTriggerChangedSignal;
    QSize tabSizeHint(bool minimum = false) const;

};

#endif // FANCYTABWIDGET_H