    //------------------------------------------------------------------------------
    // emSubViewPanel.h
    //
    // Copyright (C) 2006-2008,2010-2011,2016 Oliver Hamann.
    //
    // Homepage: http://eaglemode.sourceforge.net/
    //
    // This program is free software: you can redistribute it and/or modify it under
    // the terms of the GNU General Public License version 3 as published by the
    // Free Software Foundation.
    //
    // 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 version 3 for
    // more details.
    //
    // You should have received a copy of the GNU General Public License version 3
    // along with this program. If not, see <http://www.gnu.org/licenses/>.
    //------------------------------------------------------------------------------

    #ifndef emSubViewPanel_h
    #define emSubViewPanel_h

    #ifndef emPanel_h
    #include <emCore/emPanel.h>
    #endif

    //==============================================================================
    //=============================== emSubViewPanel ===============================
    //==============================================================================

    class emSubViewPanel : public emPanel {

    public:

            // Class for a panel which shows an emView as a sub-view. This is good
            // for splitting a view or window into multiple views. All input and
            // output of the panel is connected to the sub-view via an internal
            // emViewPort. The outer view(s) must not be zoomable.

            emSubViewPanel(ParentArg parent, const emString & name);
                    // Constructor. This creates the sub-view with default features
                    // and without any panel. The caller may change the features of
                    // the sub-view and create a root panel in it.

            virtual ~emSubViewPanel();
                    // Destructor. Deletes the sub-view and its panels.

            emView & GetSubView() const;
                    // Get the sub-view.

            virtual emString GetTitle() const;

            virtual double GetTouchEventPriority(double touchX, double touchY) const;

    protected:

            virtual void Notice(NoticeFlags flags);

            virtual void Input(emInputEvent & event, const emInputState & state,
                               double mx, double my);

            virtual emCursor GetCursor() const;

            virtual bool IsOpaque() const;

            virtual void Paint(const emPainter & painter, emColor canvasColor) const;

    private:

            void InvalidatePaintingOnView(double x, double y, double w, double h);

            class SubViewClass : public emView {
            public:
                    SubViewClass(emSubViewPanel & superPanel);
                    virtual ~SubViewClass();
            protected:
                    virtual void InvalidateTitle();
            private:
                    emSubViewPanel & SuperPanel;
            };

            class SubViewPortClass : public emViewPort {
            public:
                    SubViewPortClass(emSubViewPanel & superPanel);
                    void SetViewGeometry(double x, double y, double w, double h,
                                         double pixelTallness);
                    void SetViewFocused(bool focused);
                    void InputToView(emInputEvent & event,
                                     const emInputState & state);
                    emCursor GetViewCursor() const;
                    void PaintView(const emPainter & painter, emColor canvasColor) const;
            protected:
                    virtual void RequestFocus();
                    virtual bool IsSoftKeyboardShown() const;
                    virtual void ShowSoftKeyboard(bool show);
                    virtual emUInt64 GetInputClockMS() const;
                    virtual void InvalidateCursor();
                    virtual void InvalidatePainting(double x, double y, double w,
                                                    double h);
            private:
                    emSubViewPanel & SuperPanel;
            };

            friend class SubViewClass;
            friend class SubViewPortClass;

            SubViewClass * SubView;
            SubViewPortClass * SubViewPort;
    };

    inline emView & emSubViewPanel::GetSubView() const
    {
            return *SubView;
    }

    inline void emSubViewPanel::InvalidatePaintingOnView(
            double x, double y, double w, double h
    )
    {
            GetView().InvalidatePainting(x,y,w,h);
    }

    inline void emSubViewPanel::SubViewPortClass::SetViewGeometry(
            double x, double y, double w, double h, double pixelTallness
    )
    {
            emViewPort::SetViewGeometry(x,y,w,h,pixelTallness);
    }

    inline void emSubViewPanel::SubViewPortClass::SetViewFocused(
            bool focused
    )
    {
            emViewPort::SetViewFocused(focused);
    }

    inline void emSubViewPanel::SubViewPortClass::InputToView(
            emInputEvent & event, const emInputState & state
    )
    {
            emViewPort::InputToView(event,state);
    }

    inline emCursor emSubViewPanel::SubViewPortClass::GetViewCursor() const
    {
            return emViewPort::GetViewCursor();
    }

    inline void emSubViewPanel::SubViewPortClass::PaintView(
            const emPainter & painter, emColor canvasColor
    ) const
    {
            emViewPort::PaintView(painter,canvasColor);
    }

    #endif