/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

/*

 * This file is part of the LibreOffice project.

 *

 * This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/.

 *

 * This file incorporates work covered by the following license notice:

 *

 *   Licensed to the Apache Software Foundation (ASF) under one or more

 *   contributor license agreements. See the NOTICE file distributed

 *   with this work for additional information regarding copyright

 *   ownership. The ASF licenses this file to you under the Apache

 *   License, Version 2.0 (the "License"); you may not use this file

 *   except in compliance with the License. You may obtain a copy of

 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .

 */

#ifndef INCLUDED_VCL_SPLITWIN_HXX

#define INCLUDED_VCL_SPLITWIN_HXX

#include <vcl/dllapi.h>

#include <vcl/dockwin.hxx>

#include <o3tl/typed_flags_set.hxx>

class ImplSplitSet;

enum class SplitWindowItemFlags

{

    NONE           = 0x0000,

    Fixed          = 0x0001,

    RelativeSize   = 0x0002,

    PercentSize    = 0x0004,

    ColSet         = 0x0008,

};

namespace o3tl

{

    template<> struct typed_flags<SplitWindowItemFlags> : is_typed_flags<SplitWindowItemFlags, 0x0f> {};

}

#define SPLITWINDOW_APPEND          (sal_uInt16(0xFFFF))

#define SPLITWINDOW_ITEM_NOTFOUND   (sal_uInt16(0xFFFF))

#define SPLITWIN_SPLITSIZE              4

#define SPLITWIN_SPLITSIZEEXLN          7

class VCL_DLLPUBLIC SplitWindow : public DockingWindow

{

private:

    std::unique_ptr<ImplSplitSet> mpMainSet;

    ImplSplitSet*       mpBaseSet;

    ImplSplitSet*       mpSplitSet;

    std::unique_ptr<tools::Long[]> mpLastSizes;

    tools::Rectangle           maDragRect;

    tools::Long                mnDX;

    tools::Long                mnDY;

    tools::Long                mnLeftBorder;

    tools::Long                mnTopBorder;

    tools::Long                mnRightBorder;

    tools::Long                mnBottomBorder;

    tools::Long                mnMaxSize;

    tools::Long                mnMouseOff;

    tools::Long                mnMStartPos;

    tools::Long                mnMSplitPos;

    WinBits             mnWinStyle;

    WindowAlign         meAlign;

    sal_uInt16          mnSplitTest;

    sal_uInt16          mnSplitPos;

    sal_uInt16          mnMouseModifier;

    bool                mbDragFull:1,

                        mbHorz:1,

                        mbBottomRight:1,

                        mbCalc:1,

                        mbRecalc:1,

                        mbInvalidate:1,

                        mbFadeIn:1,

                        mbFadeOut:1,

                        mbFadeInDown:1,

                        mbFadeOutDown:1,

                        mbFadeInPressed:1,

                        mbFadeOutPressed:1,

                        mbFadeNoButtonMode:1;

    Link<SplitWindow*,void>  maSplitHdl;

    using Window::ImplInit;

    SAL_DLLPRIVATE void ImplInit( vcl::Window* pParent, WinBits nStyle );

    SAL_DLLPRIVATE void ImplInitSettings();

    SAL_DLLPRIVATE void ImplCalcLayout();

    SAL_DLLPRIVATE void ImplUpdate();

    SAL_DLLPRIVATE void ImplSetWindowSize( tools::Long nDelta );

    SAL_DLLPRIVATE void ImplSplitMousePos( Point& rMousePos );

    SAL_DLLPRIVATE void ImplGetButtonRect( tools::Rectangle& rRect, bool bTest ) const;

    SAL_DLLPRIVATE void ImplGetFadeInRect( tools::Rectangle& rRect, bool bTest = false ) const;

    SAL_DLLPRIVATE void ImplGetFadeOutRect( tools::Rectangle& rRect ) const;

    SAL_DLLPRIVATE void ImplDrawFadeIn(vcl::RenderContext& rRenderContext);

    SAL_DLLPRIVATE void ImplDrawFadeOut(vcl::RenderContext& rRenderContext);

    SAL_DLLPRIVATE void ImplNewAlign();

    SAL_DLLPRIVATE void ImplDrawGrip(vcl::RenderContext& rRenderContext, const tools::Rectangle& rRect, bool bHorz, bool bLeft);

    SAL_DLLPRIVATE void ImplStartSplit( const MouseEvent& rMEvt );

    SAL_DLLPRIVATE void ImplDrawBorder(vcl::RenderContext& rRenderContext);

    SAL_DLLPRIVATE void ImplDrawBorderLine(vcl::RenderContext& rRenderContext);

    static SAL_DLLPRIVATE void ImplCalcSet2( SplitWindow* pWindow, ImplSplitSet* pSet, bool bHide,

                                             bool bRows );

    static SAL_DLLPRIVATE sal_uInt16 ImplTestSplit( ImplSplitSet* pSet, const Point& rPos,

                                                tools::Long& rMouseOff, ImplSplitSet** ppFoundSet, sal_uInt16& rFoundPos,

                                                bool bRows );

    static SAL_DLLPRIVATE sal_uInt16 ImplTestSplit( const SplitWindow* pWindow, const Point& rPos,

                                                tools::Long& rMouseOff, ImplSplitSet** ppFoundSet, sal_uInt16& rFoundPos );

    SAL_DLLPRIVATE void ImplDrawSplitTracking(const Point& rPos);

                        SplitWindow (const SplitWindow &) = delete;

                        SplitWindow & operator= (const SplitWindow &) = delete;

public:

                        SplitWindow( vcl::Window* pParent, WinBits nStyle = 0 );

    virtual             ~SplitWindow() override;

    virtual void        dispose() override;

    virtual void        StartSplit();

    virtual void        Split();

    virtual void        SplitResize();

    virtual void        FadeIn();

    virtual void        FadeOut();

    virtual void        MouseButtonDown( const MouseEvent& rMEvt ) override;

    virtual void        MouseMove( const MouseEvent& rMEvt ) override;

    virtual void        Tracking( const TrackingEvent& rTEvt ) override;

    virtual void        Paint( vcl::RenderContext& rRenderContext, const tools::Rectangle& rRect ) override;

    virtual void        Resize() override;

    virtual void        RequestHelp( const HelpEvent& rHEvt ) override;

    virtual void        StateChanged( StateChangedType nType ) override;

    virtual void        DataChanged( const DataChangedEvent& rDCEvt ) override;

    virtual bool        PreNotify( NotifyEvent& rNEvt ) override;

    void                InsertItem( sal_uInt16 nId, vcl::Window* pWindow, tools::Long nSize,

                                    sal_uInt16 nPos, sal_uInt16 nIntoSetId,

                                    SplitWindowItemFlags nBits );

    void                InsertItem( sal_uInt16 nId, tools::Long nSize,

                                    sal_uInt16 nPos, sal_uInt16 nIntoSetId,

                                    SplitWindowItemFlags nBits );

    void                RemoveItem( sal_uInt16 nId );

    void                SplitItem( sal_uInt16 nId, tools::Long nNewSize,

                                   bool bPropSmall,

                                   bool bPropGreat );

    void                SetItemSize( sal_uInt16 nId, tools::Long nNewSize );

    tools::Long                GetItemSize( sal_uInt16 nId ) const;

    /** Set a range that limits the (variable part of the) size with an

        upper and a lower bound (both are valid values themselves.)

        @param nId

            Id of the item for which the size limits are set.

        @param rRange

            Values of -1 define missing bounds, thus setting a range (-1,-1)

            (the default) removes the size limit.

    */

    void                SetItemSizeRange (sal_uInt16 nId, const Range& rRange);

    /** Return the current size limits for the specified item.

    */

    tools::Long                GetItemSize( sal_uInt16 nId, SplitWindowItemFlags nBits ) const;

    sal_uInt16          GetSet( sal_uInt16 nId ) const;

    sal_uInt16          GetItemId( vcl::Window* pWindow ) const;

    sal_uInt16          GetItemId( const Point& rPos ) const;

    sal_uInt16          GetItemPos( sal_uInt16 nId, sal_uInt16 nSetId = 0 ) const;

    sal_uInt16          GetItemId( sal_uInt16 nPos ) const;

    sal_uInt16          GetItemCount( sal_uInt16 nSetId = 0 ) const;

    bool                IsItemValid( sal_uInt16 nId ) const;

    void                SetAlign( WindowAlign eNewAlign );

    WindowAlign         GetAlign() const { return meAlign; }

    bool                IsHorizontal() const { return mbHorz; }

    void                SetMaxSizePixel( tools::Long nNewMaxSize ) { mnMaxSize = nNewMaxSize; }

    Size                CalcLayoutSizePixel( const Size& aNewSize );

    void                ShowFadeInHideButton();

    void                ShowFadeOutButton();

    tools::Long                GetFadeInSize() const;

    bool                IsFadeNoButtonMode() const { return mbFadeNoButtonMode; }

    void                SetSplitHdl( const Link<SplitWindow*,void>& rLink ) { maSplitHdl = rLink; }

};

#endif // INCLUDED_VCL_SPLITWIN_HXX

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