| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: wx/anidecod.h |
| 3 | // Purpose: wxANIDecoder, ANI reader for wxImage and wxAnimation |
| 4 | // Author: Francesco Montorsi |
| 5 | // CVS-ID: $Id$ |
| 6 | // Copyright: (c) 2006 Francesco Montorsi |
| 7 | // Licence: wxWindows licence |
| 8 | ///////////////////////////////////////////////////////////////////////////// |
| 9 | |
| 10 | #ifndef _WX_ANIDECOD_H |
| 11 | #define _WX_ANIDECOD_H |
| 12 | |
| 13 | #include "wx/defs.h" |
| 14 | |
| 15 | #if wxUSE_STREAMS && (wxUSE_ICO_CUR || wxUSE_GIF) |
| 16 | |
| 17 | #include "wx/stream.h" |
| 18 | #include "wx/image.h" |
| 19 | #include "wx/animdecod.h" |
| 20 | #include "wx/dynarray.h" |
| 21 | |
| 22 | |
| 23 | class /*WXDLLIMPEXP_CORE*/ wxANIFrameInfo; // private implementation detail |
| 24 | |
| 25 | WX_DECLARE_EXPORTED_OBJARRAY(wxANIFrameInfo, wxANIFrameInfoArray); |
| 26 | WX_DECLARE_EXPORTED_OBJARRAY(wxImage, wxImageArray); |
| 27 | |
| 28 | // -------------------------------------------------------------------------- |
| 29 | // wxANIDecoder class |
| 30 | // -------------------------------------------------------------------------- |
| 31 | |
| 32 | class WXDLLIMPEXP_CORE wxANIDecoder : public wxAnimationDecoder |
| 33 | { |
| 34 | public: |
| 35 | // constructor, destructor, etc. |
| 36 | wxANIDecoder(); |
| 37 | ~wxANIDecoder(); |
| 38 | |
| 39 | |
| 40 | virtual wxSize GetFrameSize(unsigned int frame) const; |
| 41 | virtual wxPoint GetFramePosition(unsigned int frame) const; |
| 42 | virtual wxAnimationDisposal GetDisposalMethod(unsigned int frame) const; |
| 43 | virtual long GetDelay(unsigned int frame) const; |
| 44 | virtual wxColour GetTransparentColour(unsigned int frame) const; |
| 45 | |
| 46 | // implementation of wxAnimationDecoder's pure virtuals |
| 47 | |
| 48 | virtual bool Load( wxInputStream& stream ); |
| 49 | |
| 50 | bool ConvertToImage(unsigned int frame, wxImage *image) const; |
| 51 | |
| 52 | wxAnimationDecoder *Clone() const |
| 53 | { return new wxANIDecoder; } |
| 54 | wxAnimationType GetType() const |
| 55 | { return wxANIMATION_TYPE_ANI; } |
| 56 | |
| 57 | private: |
| 58 | // wxAnimationDecoder pure virtual: |
| 59 | virtual bool DoCanRead( wxInputStream& stream ) const; |
| 60 | // modifies current stream position (see wxAnimationDecoder::CanRead) |
| 61 | |
| 62 | // frames stored as wxImage(s): ANI files are meant to be used mostly for animated |
| 63 | // cursors and thus they do not use any optimization to encode differences between |
| 64 | // two frames: they are just a list of images to display sequentially. |
| 65 | wxImageArray m_images; |
| 66 | |
| 67 | // the info about each image stored in m_images. |
| 68 | // NB: m_info.GetCount() may differ from m_images.GetCount()! |
| 69 | wxANIFrameInfoArray m_info; |
| 70 | |
| 71 | // this is the wxCURHandler used to load the ICON chunk of the ANI files |
| 72 | static wxCURHandler sm_handler; |
| 73 | |
| 74 | |
| 75 | wxDECLARE_NO_COPY_CLASS(wxANIDecoder); |
| 76 | }; |
| 77 | |
| 78 | |
| 79 | #endif // wxUSE_STREAMS && (wxUSE_ICO_CUR || wxUSE_GIF) |
| 80 | |
| 81 | #endif // _WX_ANIDECOD_H |