splitterorview.h

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/*
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
 * for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, see <http://www.gnu.org/licenses/>
 */

#ifndef SPLITTERORVIEW_H
#define SPLITTERORVIEW_H

#include <QWidget>
#include <QMouseEvent>
#include "uavgadgetmanager.h"
#include "uavgadgetview.h"

namespace Core {

namespace Internal {

    class SplitterOrView : public QWidget
    {
        Q_OBJECT
    public:
        SplitterOrView(UAVGadgetManager *uavGadgetManager, Core::IUAVGadget *uavGadget = nullptr,
                       bool restoring = false);
        ~SplitterOrView();

        void split(Qt::Orientation orientation, bool restoring = false);
        void unsplit();

        inline bool isView() const { return m_view != nullptr; }

        inline bool isSplitter() const { return m_splitter != nullptr; }
        inline Core::IUAVGadget *gadget() const { return m_view ? m_view->gadget() : nullptr; }
        inline bool hasGadget(Core::IUAVGadget *uavGadget) const
        {
            return m_view && m_view->hasGadget(uavGadget);
        }
        inline bool hasGadget() const { return m_view && (m_view->gadget() != nullptr); }
        inline UAVGadgetView *view() const { return m_view; }
        inline QSplitter *splitter() const { return m_splitter; }
        QList<Core::IUAVGadget *> gadgets();
        QSplitter *takeSplitter();
        UAVGadgetView *takeView();

        void saveState(QSettings *) const;
        void restoreState(QSettings *);

        SplitterOrView *findView(Core::IUAVGadget *uavGadget);
        SplitterOrView *findView(UAVGadgetView *view);
        SplitterOrView *findFirstView();
        SplitterOrView *findSplitter(Core::IUAVGadget *uavGadget);
        SplitterOrView *findSplitter(SplitterOrView *child);

        SplitterOrView *findNextView(SplitterOrView *view);

        QSize sizeHint() const { return minimumSizeHint(); }
        QSize minimumSizeHint() const;

        void unsplitAll(IUAVGadget *currentGadget);

    protected:
        //    void paintEvent(QPaintEvent *);
        void mousePressEvent(QMouseEvent *e);

    private slots:
        // Called when the user moves the splitter, and updates our m_sizes.
        void onSplitterMoved(int pos, int index);

    private:
        void unsplitAll_helper();
        SplitterOrView *findNextView_helper(SplitterOrView *view, bool *found);

        // The gadget manager that controls us.
        QPointer<UAVGadgetManager> m_uavGadgetManager;

        // Our layout, we use stacked so we can change stuff without visual artifacts (I think...)
        QPointer<QStackedLayout> m_layout;

        // Our view, if we are a view (showing 1 gadget) and not a splitter.
        QPointer<UAVGadgetView> m_view;

        // Out splitter, if we are a splitter.
        QPointer<QSplitter> m_splitter;

        // The splitter sizes. We keep our own copy of these, since after loading they can't
        // realiably be retrieved.
        QList<int> m_sizes;
    };
}
}
#endif // SPLITTERORVIEW_H