X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/ac0ac8241f5ea7249ea01c04452efc0b72f49b1f..75ce4cb180dfbe5f6ee1ad6927929b43d04edcd1:/include/wx/image.h diff --git a/include/wx/image.h b/include/wx/image.h index f72667091b..afcbaf95c2 100644 --- a/include/wx/image.h +++ b/include/wx/image.h @@ -1,5 +1,5 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: image.h +// Name: wx/image.h // Purpose: wxImage class // Author: Robert Roebling // RCS-ID: $Id$ @@ -10,240 +10,173 @@ #ifndef _WX_IMAGE_H_ #define _WX_IMAGE_H_ -#ifdef __GNUG__ -#pragma interface "image.h" -#endif +#include "wx/defs.h" + +#if wxUSE_IMAGE -#include "wx/setup.h" #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 -//----------------------------------------------------------------------------- -// classes -//----------------------------------------------------------------------------- +// on some systems (Unixware 7.x) index is defined as a macro in the headers +// which breaks the compilation below +#undef index -class WXDLLEXPORT wxImageHandler; -#if wxUSE_LIBPNG -class WXDLLEXPORT wxPNGHandler; -#endif -#if wxUSE_LIBJPEG -class WXDLLEXPORT wxJPEGHandler; -#endif -class WXDLLEXPORT wxBMPHandler; -#if wxUSE_GIF -class WXDLLEXPORT wxGIFHandler; -#endif -#if wxUSE_PNM -class WXDLLEXPORT wxPNMHandler; -#endif -#if wxUSE_PCX -class WXDLLEXPORT wxPCXHandler; -#endif -class WXDLLEXPORT wxImage; +#define wxIMAGE_OPTION_QUALITY wxString(_T("quality")) +#define wxIMAGE_OPTION_FILENAME wxString(_T("FileName")) -//----------------------------------------------------------------------------- -// wxImageHandler -//----------------------------------------------------------------------------- - -class WXDLLEXPORT wxImageHandler: public wxObject -{ - DECLARE_CLASS(wxImageHandler) - -public: - wxImageHandler() { m_name = ""; m_extension = ""; m_type = 0; } - -#if wxUSE_STREAMS - virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=TRUE ); - virtual bool SaveFile( wxImage *image, wxOutputStream& stream, bool verbose=TRUE ); +#define wxIMAGE_OPTION_RESOLUTION wxString(_T("Resolution")) +#define wxIMAGE_OPTION_RESOLUTIONX wxString(_T("ResolutionX")) +#define wxIMAGE_OPTION_RESOLUTIONY wxString(_T("ResolutionY")) - bool CanRead( wxInputStream& stream ) { return DoCanRead(stream); } - bool CanRead( const wxString& name ); -#endif +#define wxIMAGE_OPTION_RESOLUTIONUNIT wxString(_T("ResolutionUnit")) - 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; } +// constants used with wxIMAGE_OPTION_RESOLUTIONUNIT +// +// NB: don't change these values, they correspond to libjpeg constants +enum wxImageResolution +{ + // Resolution not specified + wxIMAGE_RESOLUTION_NONE = 0, -protected: - virtual bool DoCanRead( wxInputStream& stream ) = 0; + // Resolution specified in inches + wxIMAGE_RESOLUTION_INCHES = 1, - wxString m_name; - wxString m_extension; - wxString m_mime; - long m_type; + // Resolution specified in centimeters + wxIMAGE_RESOLUTION_CM = 2 +}; +// Constants for wxImage::Scale() for determining the level of quality +enum +{ + wxIMAGE_QUALITY_NORMAL = 0, + wxIMAGE_QUALITY_HIGH = 1 }; +// alpha channel values: fully transparent, default threshold separating +// transparent pixels from opaque for a few functions dealing with alpha and +// fully opaque +const unsigned char wxIMAGE_ALPHA_TRANSPARENT = 0; +const unsigned char wxIMAGE_ALPHA_THRESHOLD = 0x80; +const unsigned char wxIMAGE_ALPHA_OPAQUE = 0xff; + //----------------------------------------------------------------------------- -// wxPNGHandler +// classes //----------------------------------------------------------------------------- -#if wxUSE_LIBPNG -class WXDLLEXPORT wxPNGHandler: public wxImageHandler -{ - DECLARE_DYNAMIC_CLASS(wxPNGHandler) - -public: +class WXDLLEXPORT wxImageHandler; +class WXDLLEXPORT wxImage; +class WXDLLEXPORT wxPalette; - inline wxPNGHandler() - { - m_name = "PNG file"; - m_extension = "png"; - m_type = wxBITMAP_TYPE_PNG; - m_mime = "image/png"; - }; +//----------------------------------------------------------------------------- +// wxVariant support +//----------------------------------------------------------------------------- -#if wxUSE_STREAMS - virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=TRUE ); - virtual bool SaveFile( wxImage *image, wxOutputStream& stream, bool verbose=TRUE ); - virtual bool DoCanRead( wxInputStream& stream ); -#endif -}; +#if wxUSE_VARIANT +#include "wx/variant.h" +DECLARE_VARIANT_OBJECT_EXPORTED(wxImage,WXDLLEXPORT) #endif //----------------------------------------------------------------------------- -// wxJPEGHandler +// wxImageHandler //----------------------------------------------------------------------------- -#if wxUSE_LIBJPEG -class WXDLLEXPORT wxJPEGHandler: public wxImageHandler +class WXDLLEXPORT wxImageHandler: public wxObject { - DECLARE_DYNAMIC_CLASS(wxJPEGHandler) - public: - - inline wxJPEGHandler() - { - m_name = "JPEG file"; - m_extension = "jpg"; - m_type = wxBITMAP_TYPE_JPEG; - m_mime = "image/jpeg"; - }; + 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 ); - virtual bool SaveFile( wxImage *image, wxOutputStream& stream, bool verbose=TRUE ); - virtual bool DoCanRead( wxInputStream& stream ); -#endif -}; -#endif - -//----------------------------------------------------------------------------- -// wxBMPHandler -//----------------------------------------------------------------------------- + virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=true, int index=-1 ); + virtual bool SaveFile( wxImage *image, wxOutputStream& stream, bool verbose=true ); -class WXDLLEXPORT wxBMPHandler: public wxImageHandler -{ - DECLARE_DYNAMIC_CLASS(wxBMPHandler) + virtual int GetImageCount( wxInputStream& stream ); -public: + bool CanRead( wxInputStream& stream ) { return CallDoCanRead(stream); } + bool CanRead( const wxString& name ); +#endif // wxUSE_STREAMS - inline wxBMPHandler() - { - m_name = "BMP file"; - m_extension = "bmp"; - m_type = wxBITMAP_TYPE_BMP; - m_mime = "image/bmp"; - }; + 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; } + const wxString& GetName() const { return m_name; } + const wxString& GetExtension() const { return m_extension; } + long GetType() const { return m_type; } + const wxString& GetMimeType() const { return m_mime; } +protected: #if wxUSE_STREAMS - virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=TRUE ); - virtual bool DoCanRead( wxInputStream& stream ); -#endif -}; + virtual bool DoCanRead( wxInputStream& stream ) = 0; -//----------------------------------------------------------------------------- -// wxGIFHandler -//----------------------------------------------------------------------------- - -#if wxUSE_GIF + // save the stream position, call DoCanRead() and restore the position + bool CallDoCanRead(wxInputStream& stream); +#endif // wxUSE_STREAMS -class WXDLLEXPORT wxGIFHandler : public wxImageHandler -{ - DECLARE_DYNAMIC_CLASS(wxGIFHandler) + // helper for the derived classes SaveFile() implementations: returns the + // values of x- and y-resolution options specified as the image options if + // any + static wxImageResolution + GetResolutionFromOptions(const wxImage& image, int *x, int *y); -public: - inline wxGIFHandler() - { - m_name = "GIF file"; - m_extension = "gif"; - m_type = wxBITMAP_TYPE_GIF; - m_mime = "image/gif"; - }; + wxString m_name; + wxString m_extension; + wxString m_mime; + long m_type; -#if wxUSE_STREAMS - virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=TRUE ); - virtual bool SaveFile( wxImage *image, wxOutputStream& stream, bool verbose=TRUE ); - virtual bool DoCanRead( wxInputStream& stream ); -#endif +private: + DECLARE_CLASS(wxImageHandler) }; -#endif //----------------------------------------------------------------------------- -// wxPNMHandler +// wxImageHistogram //----------------------------------------------------------------------------- -#if wxUSE_PNM -class WXDLLEXPORT wxPNMHandler : public wxImageHandler +class WXDLLEXPORT wxImageHistogramEntry { - DECLARE_DYNAMIC_CLASS(wxPNMHandler) - public: - - inline wxPNMHandler() - { - m_name = "PNM file"; - m_extension = "pnm"; - m_type = wxBITMAP_TYPE_PNM; - m_mime = "image/pnm"; - }; - -#if wxUSE_STREAMS - virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=TRUE ); - virtual bool SaveFile( wxImage *image, wxOutputStream& stream, bool verbose=TRUE ); - virtual bool DoCanRead( wxInputStream& stream ); -#endif + wxImageHistogramEntry() { index = value = 0; } + unsigned long index; + unsigned long value; }; -#endif -//----------------------------------------------------------------------------- -// wxPCXHandler -//----------------------------------------------------------------------------- +WX_DECLARE_EXPORTED_HASH_MAP(unsigned long, wxImageHistogramEntry, + wxIntegerHash, wxIntegerEqual, + wxImageHistogramBase); -#if wxUSE_PCX -class WXDLLEXPORT wxPCXHandler : public wxImageHandler +class WXDLLEXPORT wxImageHistogram : public wxImageHistogramBase { - DECLARE_DYNAMIC_CLASS(wxPCXHandler) - public: - - inline wxPCXHandler() - { - m_name = "PCX file"; - m_extension = "pcx"; - m_type = wxBITMAP_TYPE_PCX; - m_mime = "image/pcx"; - }; - -#if wxUSE_STREAMS - virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=TRUE ); - virtual bool SaveFile( wxImage *image, wxOutputStream& stream, bool verbose=TRUE ); - virtual bool DoCanRead( wxInputStream& stream ); -#endif // wxUSE_STREAMS + 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; }; -#endif // wxUSE_PCX //----------------------------------------------------------------------------- // wxImage @@ -251,109 +184,286 @@ public: class WXDLLEXPORT wxImage: public wxObject { - DECLARE_DYNAMIC_CLASS(wxImage) - - friend class WXDLLEXPORT wxImageHandler; - public: + // red, green and blue are 8 bit unsigned integers in the range of 0..255 + // We use the identifier RGBValue instead of RGB, since RGB is #defined + class RGBValue + { + public: + RGBValue(unsigned char r=0, unsigned char g=0, unsigned char b=0) + : red(r), green(g), blue(b) {} + unsigned char red; + unsigned char green; + unsigned char blue; + }; + + // hue, saturation and value are doubles in the range 0.0..1.0 + class HSVValue + { + public: + HSVValue(double h=0.0, double s=0.0, double v=0.0) + : hue(h), saturation(s), value(v) {} + double hue; + double saturation; + double value; + }; + + wxImage(){} + wxImage( int width, int height, bool clear = true ); + wxImage( int width, int height, unsigned char* data, bool static_data = false ); + wxImage( int width, int height, unsigned char* data, unsigned char* alpha, 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 ); + wxImage( const char* const* xpmData ); - 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 ); - - wxImage( const wxImage& image ); - wxImage( const wxImage* image ); - - // these functions get implemented in /src/(platform)/bitmap.cpp - wxImage( const wxBitmap &bitmap ); - operator wxBitmap() const { return ConvertToBitmap(); } - wxBitmap ConvertToBitmap() const; - - void Create( int width, int height ); - void Destroy(); - - // return the new image with size width*height - wxImage GetSubImage( const wxRect& ) const; - - // return the new image with size width*height - wxImage Scale( int width, int height ) const; - - // rescales the image in place - void Rescale( int width, int height ) { *this = Scale(width, height); } - - // 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 ); +#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 - 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 ); + bool Create( int width, int height, bool clear = true ); + bool Create( int width, int height, unsigned char* data, bool static_data = false ); + bool Create( int width, int height, unsigned char* data, unsigned char* alpha, bool static_data = false ); + bool Create( const char* const* xpmData ); +#ifdef __BORLANDC__ + // needed for Borland 5.5 + wxImage( char** xpmData ) { Create(wx_const_cast(const char* const*, xpmData)); } + bool Create( char** xpmData ) { return Create(wx_const_cast(const char* const*, xpmData)); } +#endif + void Destroy(); + + // creates an identical copy of the image (the = operator + // just raises the ref count) + wxImage Copy() const; + + // return the new image with size width*height + wxImage GetSubImage( const wxRect& rect) const; + + // Paste the image or part of this image into an image of the given size at the pos + // any newly exposed areas will be filled with the rgb colour + // by default if r = g = b = -1 then fill with this image's mask colour or find and + // set a suitable mask colour + wxImage Size( const wxSize& size, const wxPoint& pos, + int r = -1, int g = -1, int b = -1 ) const; + + // 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 ); + + // return the new image with size width*height + wxImage Scale( int width, int height, int quality = wxIMAGE_QUALITY_NORMAL ) const; + + // box averager and bicubic filters for up/down sampling + wxImage ResampleBox(int width, int height) const; + wxImage ResampleBicubic(int width, int height) const; + + // blur the image according to the specified pixel radius + wxImage Blur(int radius); + wxImage BlurHorizontal(int radius); + wxImage BlurVertical(int radius); + + wxImage ShrinkBy( int xFactor , int yFactor ) const ; + + // rescales the image in place + wxImage& Rescale( int width, int height, int quality = wxIMAGE_QUALITY_NORMAL ) { return *this = Scale(width, height, quality); } + + // resizes the image in place + wxImage& Resize( const wxSize& size, const wxPoint& pos, + int r = -1, int g = -1, int b = -1 ) { return *this = Size(size, pos, r, g, b); } + + // 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; + + wxImage Rotate90( bool clockwise = true ) const; + wxImage Mirror( bool horizontally = true ) const; + + // 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 ); + + // Convert to greyscale image. Uses the luminance component (Y) of the image. + // The luma value (YUV) is calculated using (R * lr) + (G * lg) + (B * lb), defaults to ITU-T BT.601 + wxImage ConvertToGreyscale( double lr = 0.299, double lg = 0.587, double lb = 0.114 ) const; + + // 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 ); + void SetRGB( const wxRect& rect, 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 = wxIMAGE_ALPHA_THRESHOLD); + + // This method converts an image where the original alpha + // information is only available as a shades of a colour + // (actually shades of grey) typically when you draw anti- + // aliased text into a bitmap. The DC drawinf routines + // draw grey values on the black background although they + // actually mean to draw white with differnt alpha values. + // This method reverses it, assuming a black (!) background + // and white text (actually only the red channel is read). + // The method will then fill up the whole image with the + // colour given. + bool ConvertColourToAlpha( unsigned char r, unsigned char g, unsigned char b ); + + 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(); + bool Ok() const { return IsOk(); } + bool IsOk() 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, bool static_data=false ); + void SetData( unsigned char *data, int new_width, int new_height, bool static_data=false ); + + unsigned char *GetAlpha() const; // may return NULL! + bool HasAlpha() const { return GetAlpha() != NULL; } + void SetAlpha(unsigned char *alpha = NULL, bool static_data=false); + void InitAlpha(); + + // return true if this pixel is masked or has alpha less than specified + // threshold + bool IsTransparent(int x, int y, + unsigned char threshold = wxIMAGE_ALPHA_THRESHOLD) const; + + // Mask functions + void SetMaskColour( unsigned char r, unsigned char g, unsigned char b ); + // Get the current mask colour or find a suitable colour + // returns true if using current mask colour + bool GetOrFindMaskColour( unsigned char *r, unsigned char *g, unsigned char *b ) const; + 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; + + // Rotates the hue of each pixel of the image. angle is a double in the range + // -1.0..1.0 where -1.0 is -360 degrees and 1.0 is 360 degrees + void RotateHue(double angle); + + 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(); + + static HSVValue RGBtoHSV(const RGBValue& rgb); + static RGBValue HSVtoRGB(const HSVValue& hsv); + protected: + static wxList sm_handlers; + + // return the index of the point with the given coordinates or -1 if the + // image is invalid of the coordinates are out of range + // + // note that index must be multiplied by 3 when using it with RGB array + long XYToIndex(int x, int y) const; - static wxList sm_handlers; + virtual wxObjectRefData* CreateRefData() const; + virtual wxObjectRefData* CloneRefData(const wxObjectRefData* data) const; +private: + friend class WXDLLEXPORT wxImageHandler; + + DECLARE_DYNAMIC_CLASS(wxImage) }; + extern void WXDLLEXPORT wxInitAllImageHandlers(); +extern WXDLLEXPORT_DATA(wxImage) wxNullImage; + +//----------------------------------------------------------------------------- +// wxImage handlers +//----------------------------------------------------------------------------- + +#include "wx/imagbmp.h" +#include "wx/imagpng.h" +#include "wx/imaggif.h" +#include "wx/imagpcx.h" +#include "wx/imagjpeg.h" +#include "wx/imagtga.h" +#include "wx/imagtiff.h" +#include "wx/imagpnm.h" +#include "wx/imagxpm.h" +#include "wx/imagiff.h" + +#endif // wxUSE_IMAGE + #endif // _WX_IMAGE_H_ -