X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/97734a7f33d5aca59ac585631837e0339df7a6c9..0a7b481fee70afb6736a9a19edcadbc679bdfb2f:/include/wx/image.h diff --git a/include/wx/image.h b/include/wx/image.h index e716998d2b..153065c764 100644 --- a/include/wx/image.h +++ b/include/wx/image.h @@ -10,7 +10,7 @@ #ifndef _WX_IMAGE_H_ #define _WX_IMAGE_H_ -#ifdef __GNUG__ +#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) #pragma interface "image.h" #endif @@ -18,18 +18,27 @@ #include "wx/object.h" #include "wx/string.h" #include "wx/gdicmn.h" -#include "wx/bitmap.h" +#include "wx/hashmap.h" #if wxUSE_STREAMS # include "wx/stream.h" #endif +#if wxUSE_IMAGE + +// on some systems (Unixware 7.x) index is defined as a macro in the headers +// which breaks the compilation below +#undef index + +#define wxIMAGE_OPTION_FILENAME wxString(_T("FileName")) + //----------------------------------------------------------------------------- // classes //----------------------------------------------------------------------------- class WXDLLEXPORT wxImageHandler; class WXDLLEXPORT wxImage; +class WXDLLEXPORT wxPalette; //----------------------------------------------------------------------------- // wxImageHandler @@ -37,167 +46,277 @@ class WXDLLEXPORT wxImage; class WXDLLEXPORT wxImageHandler: public wxObject { - DECLARE_CLASS(wxImageHandler) - public: - wxImageHandler() { m_name = ""; m_extension = ""; m_type = 0; } + wxImageHandler() + : m_name(wxEmptyString), m_extension(wxEmptyString), m_mime(), m_type(0) + { } #if wxUSE_STREAMS - virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=TRUE, int index=0 ); - virtual bool SaveFile( wxImage *image, wxOutputStream& stream, bool verbose=TRUE ); + virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=TRUE, int index=-1 ); + virtual bool SaveFile( wxImage *image, wxOutputStream& stream, bool verbose=TRUE ); - virtual int GetImageCount( wxInputStream& stream ); + virtual int GetImageCount( wxInputStream& stream ); - bool CanRead( wxInputStream& stream ) { return DoCanRead(stream); } - bool CanRead( const wxString& name ); + bool CanRead( wxInputStream& stream ) { return CallDoCanRead(stream); } + bool CanRead( const wxString& name ); #endif // wxUSE_STREAMS - void SetName(const wxString& name) { m_name = name; } - void SetExtension(const wxString& ext) { m_extension = ext; } - void SetType(long type) { m_type = type; } - void SetMimeType(const wxString& type) { m_mime = type; } - wxString GetName() const { return m_name; } - wxString GetExtension() const { return m_extension; } - long GetType() const { return m_type; } - wxString GetMimeType() const { return m_mime; } + void SetName(const wxString& name) { m_name = name; } + void SetExtension(const wxString& ext) { m_extension = ext; } + void SetType(long type) { m_type = type; } + void SetMimeType(const wxString& type) { m_mime = type; } + wxString GetName() const { return m_name; } + wxString GetExtension() const { return m_extension; } + long GetType() const { return m_type; } + wxString GetMimeType() const { return m_mime; } protected: #if wxUSE_STREAMS - virtual bool DoCanRead( wxInputStream& stream ) = 0; + virtual bool DoCanRead( wxInputStream& stream ) = 0; + + // save the stream position, call DoCanRead() and restore the position + bool CallDoCanRead(wxInputStream& stream); #endif // wxUSE_STREAMS - wxString m_name; - wxString m_extension; - wxString m_mime; - long m_type; -}; + wxString m_name; + wxString m_extension; + wxString m_mime; + long m_type; +private: + DECLARE_CLASS(wxImageHandler) +}; //----------------------------------------------------------------------------- -// wxImage +// wxImageHistogram //----------------------------------------------------------------------------- - -// GRG: Dic/99 -class WXDLLEXPORT wxHNode +class WXDLLEXPORT wxImageHistogramEntry { public: + wxImageHistogramEntry() { index = value = 0; } unsigned long index; unsigned long value; }; +WX_DECLARE_EXPORTED_HASH_MAP(unsigned long, wxImageHistogramEntry, + wxIntegerHash, wxIntegerEqual, + wxImageHistogramBase); -class WXDLLEXPORT wxImage: public wxObject +class WXDLLEXPORT wxImageHistogram : public wxImageHistogramBase { - DECLARE_DYNAMIC_CLASS(wxImage) +public: + wxImageHistogram() : wxImageHistogramBase(256) { } + + // get the key in the histogram for the given RGB values + static unsigned long MakeKey(unsigned char r, + unsigned char g, + unsigned char b) + { + return (r << 16) | (g << 8) | b; + } + + // find first colour that is not used in the image and has higher + // RGB values than RGB(startR, startG, startB) + // + // returns true and puts this colour in r, g, b (each of which may be NULL) + // on success or returns false if there are no more free colours + bool FindFirstUnusedColour(unsigned char *r, + unsigned char *g, + unsigned char *b, + unsigned char startR = 1, + unsigned char startG = 0, + unsigned char startB = 0 ) const; +}; - friend class WXDLLEXPORT wxImageHandler; +//----------------------------------------------------------------------------- +// wxImage +//----------------------------------------------------------------------------- +class WXDLLEXPORT wxImage: public wxObject +{ public: + wxImage(); + wxImage( int width, int height, bool clear = true ); + wxImage( int width, int height, unsigned char* data, bool static_data = FALSE ); + wxImage( const wxString& name, long type = wxBITMAP_TYPE_ANY, int index = -1 ); + wxImage( const wxString& name, const wxString& mimetype, int index = -1 ); + +#if wxUSE_STREAMS + wxImage( wxInputStream& stream, long type = wxBITMAP_TYPE_ANY, int index = -1 ); + wxImage( wxInputStream& stream, const wxString& mimetype, int index = -1 ); +#endif // wxUSE_STREAMS + + wxImage( const wxImage& image ); + wxImage( const wxImage* image ); + + bool Create( int width, int height, bool clear = true ); + bool Create( int width, int height, unsigned char* data, bool static_data = FALSE ); + void Destroy(); + + // creates an identical copy of the image (the = operator + // just raises the ref count) + wxImage Copy() const; - wxImage(); - wxImage( int width, int height ); - wxImage( const wxString& name, long type = wxBITMAP_TYPE_ANY ); - wxImage( wxInputStream& stream, long type = wxBITMAP_TYPE_ANY ); - wxImage( const wxString& name, const wxString& mimetype ); - wxImage( wxInputStream& stream, const wxString& mimetype ); + // return the new image with size width*height + wxImage GetSubImage( const wxRect& ) const; - wxImage( const wxImage& image ); - wxImage( const wxImage* image ); + // pastes image into this instance and takes care of + // the mask colour and out of bounds problems + void Paste( const wxImage &image, int x, int y ); - // these functions get implemented in /src/(platform)/bitmap.cpp - wxImage( const wxBitmap &bitmap ); - operator wxBitmap() const { return ConvertToBitmap(); } - wxBitmap ConvertToBitmap() const; + // return the new image with size width*height + wxImage Scale( int width, int height ) const; - void Create( int width, int height ); - void Destroy(); + wxImage ShrinkBy( int xFactor , int yFactor ) const ; - // return the new image with size width*height - wxImage GetSubImage( const wxRect& ) const; + // rescales the image in place + wxImage& Rescale( int width, int height ) { return *this = Scale(width, height); } - // return the new image with size width*height - wxImage Scale( int width, int height ) const; + // Rotates the image about the given point, 'angle' radians. + // Returns the rotated image, leaving this image intact. + wxImage Rotate(double angle, const wxPoint & centre_of_rotation, + bool interpolating = TRUE, wxPoint * offset_after_rotation = (wxPoint*) NULL) const; - // rescales the image in place - wxImage& Rescale( int width, int height ) { return *this = Scale(width, height); } + wxImage Rotate90( bool clockwise = TRUE ) const; + wxImage Mirror( bool horizontally = TRUE ) const; - // these routines are slow but safe - void SetRGB( int x, int y, unsigned char r, unsigned char g, unsigned char b ); - unsigned char GetRed( int x, int y ); - unsigned char GetGreen( int x, int y ); - unsigned char GetBlue( int x, int y ); + // replace one colour with another + void Replace( unsigned char r1, unsigned char g1, unsigned char b1, + unsigned char r2, unsigned char g2, unsigned char b2 ); - static bool CanRead( const wxString& name ); - virtual bool LoadFile( const wxString& name, long type = wxBITMAP_TYPE_ANY ); - virtual bool LoadFile( const wxString& name, const wxString& mimetype ); + // convert to monochrome image ( will be replaced by white, + // everything else by black) + wxImage ConvertToMono( unsigned char r, unsigned char g, unsigned char b ) const; + + // these routines are slow but safe + void SetRGB( int x, int y, unsigned char r, unsigned char g, unsigned char b ); + unsigned char GetRed( int x, int y ) const; + unsigned char GetGreen( int x, int y ) const; + unsigned char GetBlue( int x, int y ) const; + + void SetAlpha(int x, int y, unsigned char alpha); + unsigned char GetAlpha(int x, int y) const; + + // find first colour that is not used in the image and has higher + // RGB values than + bool FindFirstUnusedColour( unsigned char *r, unsigned char *g, unsigned char *b, + unsigned char startR = 1, unsigned char startG = 0, + unsigned char startB = 0 ) const; + // Set image's mask to the area of 'mask' that has colour + bool SetMaskFromImage(const wxImage & mask, + unsigned char mr, unsigned char mg, unsigned char mb); + + // converts image's alpha channel to mask, if it has any, does nothing + // otherwise: + bool ConvertAlphaToMask(unsigned char threshold = 128); + + static bool CanRead( const wxString& name ); + static int GetImageCount( const wxString& name, long type = wxBITMAP_TYPE_ANY ); + virtual bool LoadFile( const wxString& name, long type = wxBITMAP_TYPE_ANY, int index = -1 ); + virtual bool LoadFile( const wxString& name, const wxString& mimetype, int index = -1 ); #if wxUSE_STREAMS - static bool CanRead( wxInputStream& stream ); - virtual bool LoadFile( wxInputStream& stream, long type = wxBITMAP_TYPE_ANY ); - virtual bool LoadFile( wxInputStream& stream, const wxString& mimetype ); + static bool CanRead( wxInputStream& stream ); + static int GetImageCount( wxInputStream& stream, long type = wxBITMAP_TYPE_ANY ); + virtual bool LoadFile( wxInputStream& stream, long type = wxBITMAP_TYPE_ANY, int index = -1 ); + virtual bool LoadFile( wxInputStream& stream, const wxString& mimetype, int index = -1 ); #endif - virtual bool SaveFile( const wxString& name, int type ); - virtual bool SaveFile( const wxString& name, const wxString& mimetype ); + virtual bool SaveFile( const wxString& name ) const; + virtual bool SaveFile( const wxString& name, int type ) const; + virtual bool SaveFile( const wxString& name, const wxString& mimetype ) const; #if wxUSE_STREAMS - virtual bool SaveFile( wxOutputStream& stream, int type ); - virtual bool SaveFile( wxOutputStream& stream, const wxString& mimetype ); + virtual bool SaveFile( wxOutputStream& stream, int type ) const; + virtual bool SaveFile( wxOutputStream& stream, const wxString& mimetype ) const; #endif - bool Ok() const; - int GetWidth() const; - int GetHeight() const; - - char unsigned *GetData() const; - void SetData( char unsigned *data ); - - void SetMaskColour( unsigned char r, unsigned char g, unsigned char b ); - unsigned char GetMaskRed() const; - unsigned char GetMaskGreen() const; - unsigned char GetMaskBlue() const; - void SetMask( bool mask = TRUE ); - bool HasMask() const; - - wxImage& operator = (const wxImage& image) - { - if ( (*this) != image ) - Ref(image); - return *this; - } - - bool operator == (const wxImage& image) - { return m_refData == image.m_refData; } - bool operator != (const wxImage& image) - { return m_refData != image.m_refData; } - - static wxList& GetHandlers() { return sm_handlers; } - static void AddHandler( wxImageHandler *handler ); - static void InsertHandler( wxImageHandler *handler ); - static bool RemoveHandler( const wxString& name ); - static wxImageHandler *FindHandler( const wxString& name ); - static wxImageHandler *FindHandler( const wxString& extension, long imageType ); - static wxImageHandler *FindHandler( long imageType ); - static wxImageHandler *FindHandlerMime( const wxString& mimetype ); - - static void CleanUpHandlers(); - static void InitStandardHandlers(); - - // GRG: Dic/99 - unsigned long CountColours( unsigned long stopafter = -1 ); - unsigned long ComputeHistogram( wxHashTable &h ); - + bool Ok() const; + int GetWidth() const; + int GetHeight() const; + + // these functions provide fastest access to wxImage data but should be + // used carefully as no checks are done + unsigned char *GetData() const; + void SetData( unsigned char *data ); + void SetData( unsigned char *data, int new_width, int new_height ); + + unsigned char *GetAlpha() const; // may return NULL! + bool HasAlpha() const { return GetAlpha() != NULL; } + void SetAlpha(unsigned char *alpha = NULL); + + // Mask functions + void SetMaskColour( unsigned char r, unsigned char g, unsigned char b ); + unsigned char GetMaskRed() const; + unsigned char GetMaskGreen() const; + unsigned char GetMaskBlue() const; + void SetMask( bool mask = TRUE ); + bool HasMask() const; + +#if wxUSE_PALETTE + // Palette functions + bool HasPalette() const; + const wxPalette& GetPalette() const; + void SetPalette(const wxPalette& palette); +#endif // wxUSE_PALETTE + + // Option functions (arbitrary name/value mapping) + void SetOption(const wxString& name, const wxString& value); + void SetOption(const wxString& name, int value); + wxString GetOption(const wxString& name) const; + int GetOptionInt(const wxString& name) const; + bool HasOption(const wxString& name) const; + + unsigned long CountColours( unsigned long stopafter = (unsigned long) -1 ) const; + + // Computes the histogram of the image and fills a hash table, indexed + // with integer keys built as 0xRRGGBB, containing wxImageHistogramEntry + // objects. Each of them contains an 'index' (useful to build a palette + // with the image colours) and a 'value', which is the number of pixels + // in the image with that colour. + // Returned value: # of entries in the histogram + unsigned long ComputeHistogram( wxImageHistogram &h ) const; + + wxImage& operator = (const wxImage& image) + { + if ( (*this) != image ) + Ref(image); + return *this; + } + + bool operator == (const wxImage& image) const + { return m_refData == image.m_refData; } + bool operator != (const wxImage& image) const + { return m_refData != image.m_refData; } + + static wxList& GetHandlers() { return sm_handlers; } + static void AddHandler( wxImageHandler *handler ); + static void InsertHandler( wxImageHandler *handler ); + static bool RemoveHandler( const wxString& name ); + static wxImageHandler *FindHandler( const wxString& name ); + static wxImageHandler *FindHandler( const wxString& extension, long imageType ); + static wxImageHandler *FindHandler( long imageType ); + static wxImageHandler *FindHandlerMime( const wxString& mimetype ); + + static wxString GetImageExtWildcard(); + + static void CleanUpHandlers(); + static void InitStandardHandlers(); protected: + static wxList sm_handlers; - static wxList sm_handlers; +private: + friend class WXDLLEXPORT wxImageHandler; + DECLARE_DYNAMIC_CLASS(wxImage) }; extern void WXDLLEXPORT wxInitAllImageHandlers(); +WXDLLEXPORT_DATA(extern wxImage) wxNullImage; //----------------------------------------------------------------------------- // wxImage handlers @@ -210,6 +329,10 @@ extern void WXDLLEXPORT wxInitAllImageHandlers(); #include "wx/imagjpeg.h" #include "wx/imagtiff.h" #include "wx/imagpnm.h" +#include "wx/imagxpm.h" +#include "wx/imagiff.h" + +#endif // wxUSE_IMAGE #endif // _WX_IMAGE_H_