/////////////////////////////////////////////////////////////////////////////
// Name:        wx/animate.h
// Purpose:     wxAnimation and wxAnimationCtrl
// Author:      Julian Smart and Guillermo Rodriguez Garcia
// Modified by: Francesco Montorsi
// Created:     13/8/99
// Copyright:   (c) Julian Smart and Guillermo Rodriguez Garcia
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

#ifndef _WX_ANIMATE_H_
#define _WX_ANIMATE_H_

#include "wx/defs.h"

#if wxUSE_ANIMATIONCTRL

#include "wx/animdecod.h"
#include "wx/control.h"
#include "wx/timer.h"
#include "wx/bmpbndl.h"

#include <vector>

class WXDLLIMPEXP_FWD_CORE wxAnimation;
class wxAnimationImpl;

extern WXDLLIMPEXP_DATA_CORE(wxAnimation) wxNullAnimation;
extern WXDLLIMPEXP_DATA_CORE(const char) wxAnimationCtrlNameStr[];

WX_DECLARE_LIST_WITH_DECL(wxAnimationDecoder, wxAnimationDecoderList, class WXDLLIMPEXP_CORE);

// ----------------------------------------------------------------------------
// wxAnimation
// ----------------------------------------------------------------------------

class WXDLLIMPEXP_CORE wxAnimation : public wxObject
{
public:
    wxAnimation();
    explicit wxAnimation(const wxString &name, wxAnimationType type = wxANIMATION_TYPE_ANY);

#ifdef wxHAS_MEMBER_DEFAULT
    wxAnimation(const wxAnimation&) = default;
    wxAnimation& operator=(const wxAnimation&) = default;
#endif

    bool IsOk() const;
    bool IsCompatibleWith(wxClassInfo* ci) const;

    int GetDelay(unsigned int frame) const;
    unsigned int GetFrameCount() const;
    wxImage GetFrame(unsigned int frame) const;
    wxSize GetSize() const;

    bool LoadFile(const wxString& name, wxAnimationType type = wxANIMATION_TYPE_ANY);
    bool Load(wxInputStream& stream, wxAnimationType type = wxANIMATION_TYPE_ANY);

    // Methods for managing the list of decoders
    static inline wxAnimationDecoderList& GetHandlers() { return sm_handlers; }
    static void AddHandler(wxAnimationDecoder *handler);
    static void InsertHandler(wxAnimationDecoder *handler);
    static const wxAnimationDecoder *FindHandler( wxAnimationType animType );

    static void CleanUpHandlers();
    static void InitStandardHandlers();

protected:
    wxAnimationImpl* GetImpl() const;

private:
    static wxAnimationDecoderList sm_handlers;

    // Ctor used by wxAnimationCtrl::CreateAnimation() only.
    explicit wxAnimation(wxAnimationImpl* impl);

    // Give it permission to create objects of this class using specific impl
    // and access our GetImpl().
    friend class wxAnimationCtrlBase;

    wxDECLARE_DYNAMIC_CLASS(wxAnimation);
};


// ----------------------------------------------------------------------------
// wxAnimationBundle is one or more animations in different resolutions
// ----------------------------------------------------------------------------

using wxAnimations = std::vector<wxAnimation>;

// This class is conceptually similar to wxBitmapBundle but much simpler.
class WXDLLIMPEXP_CORE wxAnimationBundle
{
public:
    // Default ctor, call Add() later.
    wxAnimationBundle() = default;

    // Implicit ctor for backwards compatibility: this allows to pass a single
    // wxAnimation to wxAnimationCtrl::SetAnimation(), just as before.
    wxAnimationBundle(const wxAnimation& anim)
    {
        // Allow the animation to be invalid here, also for compatibility.
        if ( anim.IsOk() )
            m_animations.push_back(anim);
    }

    // Another implicit ctor for backwards compatibility: this one allows to
    // create an animation from the given file.
    wxAnimationBundle(const wxString& filename,
                      wxAnimationType type = wxANIMATION_TYPE_ANY)
    {
        wxAnimation anim(filename, type);
        if ( anim.IsOk() )
            m_animations.push_back(anim);
    }

    wxAnimationBundle(const wxAnimationBundle&) = default;
    wxAnimationBundle& operator=(const wxAnimationBundle&) = default;

    ~wxAnimationBundle() = default;


    // Add an animation in another, bigger, size.
    void Add(const wxAnimation& anim);

    void Add(const wxString& filename,
             wxAnimationType type = wxANIMATION_TYPE_ANY)
    {
        Add(wxAnimation(filename, type));
    }

    // Check if this bundle contains any animations (if it has any, they must
    // be valid).
    bool IsOk() const { return !m_animations.empty(); }

    // Just provide access to all the elements.
    const wxAnimations& GetAll() const { return m_animations; }

private:
    wxAnimations m_animations;
};

// ----------------------------------------------------------------------------
// wxAnimationCtrlBase
// ----------------------------------------------------------------------------

// do not autoresize to the animation's size when SetAnimation() is called
#define wxAC_NO_AUTORESIZE       (0x0010)

// default style does not include wxAC_NO_AUTORESIZE, that is, the control
// auto-resizes by default to fit the new animation when SetAnimation() is called
#define wxAC_DEFAULT_STYLE       (wxBORDER_NONE)

class WXDLLIMPEXP_CORE wxAnimationCtrlBase : public wxControl
{
public:
    wxAnimationCtrlBase() = default;

    // public API
    virtual bool LoadFile(const wxString& filename,
                          wxAnimationType type = wxANIMATION_TYPE_ANY) = 0;
    virtual bool Load(wxInputStream& stream,
                      wxAnimationType type = wxANIMATION_TYPE_ANY) = 0;

    virtual void SetAnimation(const wxAnimationBundle& animations) = 0;
    wxAnimation GetAnimation() const { return m_animation; }

    virtual bool Play() = 0;
    virtual void Stop() = 0;

    virtual bool IsPlaying() const = 0;

    virtual void SetInactiveBitmap(const wxBitmapBundle &bmp);

    // always return the original bitmap set in this control
    wxBitmap GetInactiveBitmap() const
        { return m_bmpStatic.GetBitmapFor(this); }

    wxAnimation CreateAnimation() const
        { return MakeAnimFromImpl(DoCreateAnimationImpl()); }

protected:
    virtual wxAnimationImpl* DoCreateAnimationImpl() const = 0;

    // These methods allow derived classes access to private wxAnimation ctor
    // and wxAnimation::GetImpl(), respectively.
    static wxAnimation MakeAnimFromImpl(wxAnimationImpl* impl)
        { return wxAnimation(impl); }

    wxAnimationImpl* GetAnimImpl() const
        { return m_animation.GetImpl(); }

    // All animations that we have.
    wxAnimations m_animations;

    // The animation being currently used, possibly invalid/empty.
    wxAnimation m_animation;

    // the inactive bitmap as it was set by the user
    wxBitmapBundle m_bmpStatic;

    // the inactive bitmap currently shown in the control
    // (may differ in the size from m_bmpStatic)
    wxBitmap m_bmpStaticReal;

    // updates m_bmpStaticReal from m_bmpStatic if needed
    virtual void UpdateStaticImage();

    // called by SetInactiveBitmap
    virtual void DisplayStaticImage() = 0;
};


// ----------------------------------------------------------------------------
// include the platform-specific version of the wxAnimationCtrl class
// ----------------------------------------------------------------------------

#if defined(__WXGTK__) && !defined(__WXUNIVERSAL__)
    #include "wx/gtk/animate.h"

    #define wxHAS_NATIVE_ANIMATIONCTRL
#else
    #include "wx/generic/animate.h"

    class WXDLLIMPEXP_ADV wxAnimationCtrl : public wxGenericAnimationCtrl
    {
    public:
        wxAnimationCtrl()
            : wxGenericAnimationCtrl()
            {}
        wxAnimationCtrl(wxWindow *parent,
                        wxWindowID id,
                        const wxAnimation& anim = wxNullAnimation,
                        const wxPoint& pos = wxDefaultPosition,
                        const wxSize& size = wxDefaultSize,
                        long style = wxAC_DEFAULT_STYLE,
                        const wxString& name = wxASCII_STR(wxAnimationCtrlNameStr))
            : wxGenericAnimationCtrl(parent, id, anim, pos, size, style, name)
            {}

    private:
        wxDECLARE_DYNAMIC_CLASS(wxAnimationCtrl);
    };
#endif // defined(__WXGTK__)

#endif // wxUSE_ANIMATIONCTRL

#endif // _WX_ANIMATE_H_