X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/bf78c81c049827da8131c9b8d49a591443f64bbf..c767a5bbfeb79d3cdd5c2ef222717b656c881e7d:/include/wx/image.h diff --git a/include/wx/image.h b/include/wx/image.h index e56104f841..49ea7b2229 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: $Id$ @@ -10,49 +10,95 @@ #ifndef _WX_IMAGE_H_ #define _WX_IMAGE_H_ -#if defined(__GNUG__) && !defined(__APPLE__) -#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" -#if WXWIN_COMPATIBILITY_2_2 -# include "wx/bitmap.h" -#endif #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_QUALITY wxString(_T("quality")) #define wxIMAGE_OPTION_FILENAME wxString(_T("FileName")) +#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(_T("ResolutionUnit")) + +#define wxIMAGE_OPTION_MAX_WIDTH wxString(_T("MaxWidth")) +#define wxIMAGE_OPTION_MAX_HEIGHT wxString(_T("MaxHeight")) + +// 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, + + // 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 +{ + 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; + //----------------------------------------------------------------------------- // 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(wxT("")), m_extension(wxT("")), 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 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 ); @@ -62,12 +108,20 @@ 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 @@ -77,10 +131,18 @@ protected: 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) @@ -90,10 +152,10 @@ private: // wxImageHistogram //----------------------------------------------------------------------------- -class WXDLLEXPORT wxImageHistogramEntry +class WXDLLIMPEXP_CORE wxImageHistogramEntry { public: - wxImageHistogramEntry() : index(0), value(0) {} + wxImageHistogramEntry() { index = value = 0; } unsigned long index; unsigned long value; }; @@ -102,7 +164,7 @@ 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) { } @@ -132,78 +194,154 @@ public: // wxImage //----------------------------------------------------------------------------- -class WXDLLEXPORT wxImage: public wxObject +class WXDLLIMPEXP_CORE wxImage: public wxObject { public: - wxImage(); - wxImage( int width, int height ); - 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 ); + // 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 ) + { 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 ); - -#if WXWIN_COMPATIBILITY_2_2 && wxUSE_GUI - // conversion to/from wxBitmap (deprecated, use wxBitmap's methods instead): - wxDEPRECATED( wxImage(const wxBitmap &bitmap) ); - wxDEPRECATED( wxBitmap ConvertToBitmap() const ); -#ifdef __WXGTK__ - wxBitmap ConvertToMonoBitmap( unsigned char red, unsigned char green, unsigned char blue ) const; -#endif + 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 - void Create( int width, int height ); - void Create( int width, int height, unsigned char* data, bool static_data = FALSE ); + 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 ); + + // 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; // return the new image with size width*height - wxImage GetSubImage( const wxRect& ) const; + 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 ) const; + 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) 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, 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; + bool interpolating = true, wxPoint * offset_after_rotation = NULL) const; - wxImage Rotate90( bool clockwise = TRUE ) const; - wxImage Mirror( bool horizontally = TRUE ) 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 monochrome image ( will be replaced by white, everything else by black) + // 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); + unsigned char GetAlpha(int x, int y) const; // find first colour that is not used in the image and has higher // RGB values than @@ -214,47 +352,88 @@ public: bool SetMaskFromImage(const wxImage & mask, unsigned char mr, unsigned char mg, unsigned char mb); + // 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 + // (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 ); + 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; - void SetData( unsigned char *data ); - void SetData( unsigned char *data, int new_width, int new_height ); + 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); + 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 ); + void SetMask( bool mask = true ); bool HasMask() const; #if wxUSE_PALETTE @@ -281,43 +460,120 @@ public: // 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; } + // 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 *FindHandler( const wxString& extension, wxBitmapType imageType ); + static wxImageHandler *FindHandler( wxBitmapType 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); + +#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; + // 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; + + 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(); -WXDLLEXPORT_DATA(extern wxImage) wxNullImage; +extern WXDLLIMPEXP_DATA_CORE(wxImage) wxNullImage; //----------------------------------------------------------------------------- // wxImage handlers @@ -328,6 +584,7 @@ WXDLLEXPORT_DATA(extern 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" @@ -337,4 +594,3 @@ WXDLLEXPORT_DATA(extern wxImage) wxNullImage; #endif // _WX_IMAGE_H_ -