X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/84006e65e80116a91514523b9d15344d4bbcbf4a..2e51fb3041e78ef15506ed746ed5898536be5955:/include/wx/image.h?ds=sidebyside diff --git a/include/wx/image.h b/include/wx/image.h index e685022009..eb0d19b7db 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: $Id$ @@ -11,37 +11,65 @@ #define _WX_IMAGE_H_ #include "wx/defs.h" + +#if wxUSE_IMAGE + #include "wx/object.h" #include "wx/string.h" #include "wx/gdicmn.h" #include "wx/hashmap.h" +#include "wx/arrstr.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_QUALITY wxString(_T("quality")) -#define wxIMAGE_OPTION_FILENAME wxString(_T("FileName")) +#define wxIMAGE_OPTION_QUALITY wxString(wxT("quality")) +#define wxIMAGE_OPTION_FILENAME wxString(wxT("FileName")) + +#define wxIMAGE_OPTION_RESOLUTION wxString(wxT("Resolution")) +#define wxIMAGE_OPTION_RESOLUTIONX wxString(wxT("ResolutionX")) +#define wxIMAGE_OPTION_RESOLUTIONY wxString(wxT("ResolutionY")) -#define wxIMAGE_OPTION_RESOLUTION wxString(_T("Resolution")) -#define wxIMAGE_OPTION_RESOLUTIONX wxString(_T("ResolutionX")) -#define wxIMAGE_OPTION_RESOLUTIONY wxString(_T("ResolutionY")) +#define wxIMAGE_OPTION_RESOLUTIONUNIT wxString(wxT("ResolutionUnit")) -#define wxIMAGE_OPTION_RESOLUTIONUNIT wxString(_T("ResolutionUnit")) +#define wxIMAGE_OPTION_MAX_WIDTH wxString(wxT("MaxWidth")) +#define wxIMAGE_OPTION_MAX_HEIGHT wxString(wxT("MaxHeight")) // constants used with wxIMAGE_OPTION_RESOLUTIONUNIT -enum +// +// NB: don't change these values, they correspond to libjpeg constants +enum wxImageResolution { + // Resolution not specified + wxIMAGE_RESOLUTION_NONE = 0, + + // Resolution specified in inches wxIMAGE_RESOLUTION_INCHES = 1, + + // Resolution specified in centimeters wxIMAGE_RESOLUTION_CM = 2 }; +// Constants for wxImage::Scale() for determining the level of quality +enum wxImageResizeQuality +{ + // different image resizing algorithms used by Scale() and Rescale() + wxIMAGE_QUALITY_NEAREST = 0, + wxIMAGE_QUALITY_BILINEAR = 1, + wxIMAGE_QUALITY_BICUBIC = 2, + + // default quality is low (but fast) + wxIMAGE_QUALITY_NORMAL = wxIMAGE_QUALITY_NEAREST, + + // highest (but best) quality + wxIMAGE_QUALITY_HIGH = wxIMAGE_QUALITY_BICUBIC +}; + // alpha channel values: fully transparent, default threshold separating // transparent pixels from opaque for a few functions dealing with alpha and // fully opaque @@ -53,26 +81,42 @@ const unsigned char wxIMAGE_ALPHA_OPAQUE = 0xff; // classes //----------------------------------------------------------------------------- -class WXDLLEXPORT wxImageHandler; -class WXDLLEXPORT wxImage; -class WXDLLEXPORT wxPalette; +class WXDLLIMPEXP_FWD_CORE wxImageHandler; +class WXDLLIMPEXP_FWD_CORE wxImage; +class WXDLLIMPEXP_FWD_CORE wxPalette; + +//----------------------------------------------------------------------------- +// wxVariant support +//----------------------------------------------------------------------------- + +#if wxUSE_VARIANT +#include "wx/variant.h" +DECLARE_VARIANT_OBJECT_EXPORTED(wxImage,WXDLLIMPEXP_CORE) +#endif //----------------------------------------------------------------------------- // wxImageHandler //----------------------------------------------------------------------------- -class WXDLLEXPORT wxImageHandler: public wxObject +class WXDLLIMPEXP_CORE wxImageHandler: public wxObject { public: wxImageHandler() - : m_name(wxEmptyString), m_extension(wxEmptyString), m_mime(), m_type(0) + : m_name(wxEmptyString), m_extension(wxEmptyString), m_mime(), m_type(wxBITMAP_TYPE_INVALID) { } #if wxUSE_STREAMS - 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 ); + // NOTE: LoadFile and SaveFile are not pure virtuals to allow derived classes + // to implement only one of the two + virtual bool LoadFile( wxImage *WXUNUSED(image), wxInputStream& WXUNUSED(stream), + bool WXUNUSED(verbose)=true, int WXUNUSED(index)=-1 ) + { return false; } + virtual bool SaveFile( wxImage *WXUNUSED(image), wxOutputStream& WXUNUSED(stream), + bool WXUNUSED(verbose)=true ) + { return false; } + + int GetImageCount( wxInputStream& stream ); + // save the stream position, call DoGetImageCount() and restore the position bool CanRead( wxInputStream& stream ) { return CallDoCanRead(stream); } bool CanRead( const wxString& name ); @@ -80,25 +124,48 @@ public: void SetName(const wxString& name) { m_name = name; } void SetExtension(const wxString& ext) { m_extension = ext; } - void SetType(long type) { m_type = type; } + void SetAltExtensions(const wxArrayString& exts) { m_altExtensions = exts; } + void SetType(wxBitmapType 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; } + const wxString& GetName() const { return m_name; } + const wxString& GetExtension() const { return m_extension; } + const wxArrayString& GetAltExtensions() const { return m_altExtensions; } + wxBitmapType GetType() const { return m_type; } + const wxString& GetMimeType() const { return m_mime; } + +#if WXWIN_COMPATIBILITY_2_8 + wxDEPRECATED( + void SetType(long type) { SetType((wxBitmapType)type); } + ) +#endif // WXWIN_COMPATIBILITY_2_8 protected: #if wxUSE_STREAMS + // NOTE: this function is allowed to change the current stream position + // since GetImageCount() will take care of restoring it later + virtual int DoGetImageCount( wxInputStream& WXUNUSED(stream) ) + { return 1; } // default return value is 1 image + + // NOTE: this function is allowed to change the current stream position + // since CallDoCanRead() will take care of restoring it later virtual bool DoCanRead( wxInputStream& stream ) = 0; // save the stream position, call DoCanRead() and restore the position bool CallDoCanRead(wxInputStream& stream); #endif // wxUSE_STREAMS + // 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); + + wxString m_name; wxString m_extension; + wxArrayString m_altExtensions; wxString m_mime; - long m_type; + wxBitmapType m_type; private: DECLARE_CLASS(wxImageHandler) @@ -108,7 +175,7 @@ private: // wxImageHistogram //----------------------------------------------------------------------------- -class WXDLLEXPORT wxImageHistogramEntry +class WXDLLIMPEXP_CORE wxImageHistogramEntry { public: wxImageHistogramEntry() { index = value = 0; } @@ -120,7 +187,7 @@ WX_DECLARE_EXPORTED_HASH_MAP(unsigned long, wxImageHistogramEntry, wxIntegerHash, wxIntegerEqual, wxImageHistogramBase); -class WXDLLEXPORT wxImageHistogram : public wxImageHistogramBase +class WXDLLIMPEXP_CORE wxImageHistogram : public wxImageHistogramBase { public: wxImageHistogram() : wxImageHistogramBase(256) { } @@ -150,7 +217,7 @@ public: // wxImage //----------------------------------------------------------------------------- -class WXDLLEXPORT wxImage: public wxObject +class WXDLLIMPEXP_CORE wxImage: public wxObject { public: // red, green and blue are 8 bit unsigned integers in the range of 0..255 @@ -160,7 +227,7 @@ public: 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 red; unsigned char green; unsigned char blue; }; @@ -171,34 +238,65 @@ public: public: HSVValue(double h=0.0, double s=0.0, double v=0.0) : hue(h), saturation(s), value(v) {} - double hue; + 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** xpmData ); - wxImage( char** xpmData ); + wxImage() {} + wxImage( int width, int height, bool clear = true ) + { Create( width, height, clear ); } + wxImage( int width, int height, unsigned char* data, bool static_data = false ) + { Create( width, height, data, static_data ); } + wxImage( int width, int height, unsigned char* data, unsigned char* alpha, bool static_data = false ) + { Create( width, height, data, alpha, static_data ); } + + // ctor variants using wxSize: + wxImage( const wxSize& sz, bool clear = true ) + { Create( sz, clear ); } + wxImage( const wxSize& sz, unsigned char* data, bool static_data = false ) + { Create( sz, data, static_data ); } + wxImage( const wxSize& sz, unsigned char* data, unsigned char* alpha, bool static_data = false ) + { Create( sz, data, alpha, static_data ); } + + wxImage( const wxString& name, wxBitmapType type = wxBITMAP_TYPE_ANY, int index = -1 ) + { LoadFile( name, type, index ); } + wxImage( const wxString& name, const wxString& mimetype, int index = -1 ) + { LoadFile( name, mimetype, index ); } + wxImage( const char* const* xpmData ) + { Create(xpmData); } #if wxUSE_STREAMS - wxImage( wxInputStream& stream, long type = wxBITMAP_TYPE_ANY, int index = -1 ); - wxImage( wxInputStream& stream, const wxString& mimetype, int index = -1 ); + wxImage( wxInputStream& stream, wxBitmapType type = wxBITMAP_TYPE_ANY, int index = -1 ) + { LoadFile( stream, type, index ); } + wxImage( wxInputStream& stream, const wxString& mimetype, int index = -1 ) + { LoadFile( stream, mimetype, index ); } #endif // wxUSE_STREAMS - wxImage( const wxImage& image ); - wxImage( const wxImage* image ); + bool Create( const char* const* xpmData ); +#ifdef __BORLANDC__ + // needed for Borland 5.5 + wxImage( char** xpmData ) { Create(const_cast(xpmData)); } + bool Create( char** xpmData ) { return Create(const_cast(xpmData)); } +#endif 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** xpmData ); + + // Create() variants using wxSize: + bool Create( const wxSize& sz, bool clear = true ) + { return Create(sz.GetWidth(), sz.GetHeight(), clear); } + bool Create( const wxSize& sz, unsigned char* data, bool static_data = false ) + { return Create(sz.GetWidth(), sz.GetHeight(), data, static_data); } + bool Create( const wxSize& sz, unsigned char* data, unsigned char* alpha, bool static_data = false ) + { return Create(sz.GetWidth(), sz.GetHeight(), data, alpha, static_data); } + void Destroy(); + // initialize the image data with zeroes + void Clear(unsigned char value = 0); + // creates an identical copy of the image (the = operator // just raises the ref count) wxImage Copy() const; @@ -218,12 +316,26 @@ public: void Paste( const wxImage &image, int x, int y ); // return the new image with size width*height - wxImage Scale( int width, int height ) const; + wxImage Scale( int width, int height, + wxImageResizeQuality quality = wxIMAGE_QUALITY_NORMAL ) const; + + // box averager and bicubic filters for up/down sampling + wxImage ResampleNearest(int width, int height) const; + wxImage ResampleBox(int width, int height) const; + wxImage ResampleBilinear(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) const; + wxImage BlurHorizontal(int radius) const; + wxImage BlurVertical(int radius) const; wxImage ShrinkBy( int xFactor , int yFactor ) const ; // rescales the image in place - wxImage& Rescale( int width, int height ) { return *this = Scale(width, height); } + wxImage& Rescale( int width, int height, + wxImageResizeQuality quality = wxIMAGE_QUALITY_NORMAL ) + { return *this = Scale(width, height, quality); } // resizes the image in place wxImage& Resize( const wxSize& size, const wxPoint& pos, @@ -232,7 +344,7 @@ public: // 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; + bool interpolating = true, wxPoint * offset_after_rotation = NULL) const; wxImage Rotate90( bool clockwise = true ) const; wxImage Mirror( bool horizontally = true ) const; @@ -241,6 +353,10 @@ public: 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; @@ -264,9 +380,13 @@ public: 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: + // converts image's alpha channel to mask (choosing mask colour + // automatically or using the specified colour for the mask), if it has + // any, does nothing otherwise: bool ConvertAlphaToMask(unsigned char threshold = wxIMAGE_ALPHA_THRESHOLD); + void ConvertAlphaToMask(unsigned char mr, unsigned char mg, unsigned char mb, + 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 @@ -281,30 +401,42 @@ public: 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 ); + static int GetImageCount( const wxString& name, wxBitmapType type = wxBITMAP_TYPE_ANY ); + virtual bool LoadFile( const wxString& name, wxBitmapType 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 ); - static int GetImageCount( wxInputStream& stream, long type = wxBITMAP_TYPE_ANY ); - virtual bool LoadFile( wxInputStream& stream, long type = wxBITMAP_TYPE_ANY, int index = -1 ); + static int GetImageCount( wxInputStream& stream, wxBitmapType type = wxBITMAP_TYPE_ANY ); + virtual bool LoadFile( wxInputStream& stream, wxBitmapType 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 ) const; - virtual bool SaveFile( const wxString& name, int type ) const; + virtual bool SaveFile( const wxString& name, wxBitmapType type ) const; virtual bool SaveFile( const wxString& name, const wxString& mimetype ) const; #if wxUSE_STREAMS - virtual bool SaveFile( wxOutputStream& stream, int type ) const; + virtual bool SaveFile( wxOutputStream& stream, wxBitmapType type ) const; virtual bool SaveFile( wxOutputStream& stream, const wxString& mimetype ) const; #endif - bool Ok() const; + bool Ok() const { return IsOk(); } + bool IsOk() const; int GetWidth() const; int GetHeight() const; + wxSize GetSize() const + { return wxSize(GetWidth(), GetHeight()); } + + // Gets the type of image found by LoadFile or specified with SaveFile + wxBitmapType GetType() const; + + // Set the image type, this is normally only called if the image is being + // created from data in the given format but not using LoadFile() (e.g. + // wxGIFDecoder uses this) + void SetType(wxBitmapType type); + // these functions provide fastest access to wxImage data but should be // used carefully as no checks are done unsigned char *GetData() const; @@ -360,25 +492,14 @@ public: // -1.0..1.0 where -1.0 is -360 degrees and 1.0 is 360 degrees void RotateHue(double angle); - 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 *FindHandler( const wxString& extension, wxBitmapType imageType ); + static wxImageHandler *FindHandler( wxBitmapType imageType ); + static wxImageHandler *FindHandlerMime( const wxString& mimetype ); static wxString GetImageExtWildcard(); @@ -389,6 +510,65 @@ public: static HSVValue RGBtoHSV(const RGBValue& rgb); static RGBValue HSVtoRGB(const HSVValue& hsv); +#if WXWIN_COMPATIBILITY_2_8 + wxDEPRECATED_CONSTRUCTOR( + wxImage(const wxString& name, long type, int index = -1) + { + LoadFile(name, (wxBitmapType)type, index); + } + ) + +#if wxUSE_STREAMS + wxDEPRECATED_CONSTRUCTOR( + wxImage(wxInputStream& stream, long type, int index = -1) + { + LoadFile(stream, (wxBitmapType)type, index); + } + ) + + wxDEPRECATED( + bool LoadFile(wxInputStream& stream, long type, int index = -1) + { + return LoadFile(stream, (wxBitmapType)type, index); + } + ) + + wxDEPRECATED( + bool SaveFile(wxOutputStream& stream, long type) const + { + return SaveFile(stream, (wxBitmapType)type); + } + ) +#endif // wxUSE_STREAMS + + wxDEPRECATED( + bool LoadFile(const wxString& name, long type, int index = -1) + { + return LoadFile(name, (wxBitmapType)type, index); + } + ) + + wxDEPRECATED( + bool SaveFile(const wxString& name, long type) const + { + return SaveFile(name, (wxBitmapType)type); + } + ) + + wxDEPRECATED( + static wxImageHandler *FindHandler(const wxString& ext, long type) + { + return FindHandler(ext, (wxBitmapType)type); + } + ) + + wxDEPRECATED( + static wxImageHandler *FindHandler(long imageType) + { + return FindHandler((wxBitmapType)imageType); + } + ) +#endif // WXWIN_COMPATIBILITY_2_8 protected: static wxList sm_handlers; @@ -399,16 +579,29 @@ protected: // note that index must be multiplied by 3 when using it with RGB array long XYToIndex(int x, int y) const; + virtual wxObjectRefData* CreateRefData() const; + virtual wxObjectRefData* CloneRefData(const wxObjectRefData* data) const; + private: - friend class WXDLLEXPORT wxImageHandler; + friend class WXDLLIMPEXP_FWD_CORE wxImageHandler; + +#if wxUSE_STREAMS + // read the image from the specified stream updating image type if + // successful + bool DoLoad(wxImageHandler& handler, wxInputStream& stream, int index); + + // write the image to the specified stream and also update the image type + // if successful + bool DoSave(wxImageHandler& handler, wxOutputStream& stream) const; +#endif // wxUSE_STREAMS DECLARE_DYNAMIC_CLASS(wxImage) }; -extern void WXDLLEXPORT wxInitAllImageHandlers(); +extern void WXDLLIMPEXP_CORE wxInitAllImageHandlers(); -extern WXDLLEXPORT_DATA(wxImage) wxNullImage; +extern WXDLLIMPEXP_DATA_CORE(wxImage) wxNullImage; //----------------------------------------------------------------------------- // wxImage handlers @@ -419,6 +612,7 @@ extern WXDLLEXPORT_DATA(wxImage) wxNullImage; #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" @@ -428,4 +622,3 @@ extern WXDLLEXPORT_DATA(wxImage) wxNullImage; #endif // _WX_IMAGE_H_ -