X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/52b64b0a78c7f6c7994d25f6e212c715ab4404ba..23ee4b4874aa32111eca609bfe4c9e62e6ca5a6a:/include/wx/image.h diff --git a/include/wx/image.h b/include/wx/image.h index 88f26a453b..ceaad75c96 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 @@ -18,7 +18,7 @@ #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" @@ -26,12 +26,19 @@ #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 @@ -40,15 +47,17 @@ class WXDLLEXPORT wxImage; class WXDLLEXPORT wxImageHandler: public wxObject { 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 ); - bool CanRead( wxInputStream& stream ) { return DoCanRead(stream); } + bool CanRead( wxInputStream& stream ) { return CallDoCanRead(stream); } bool CanRead( const wxString& name ); #endif // wxUSE_STREAMS @@ -64,85 +73,122 @@ public: protected: #if wxUSE_STREAMS 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; - + private: DECLARE_CLASS(wxImageHandler) }; //----------------------------------------------------------------------------- -// wxImage +// wxImageHistogram //----------------------------------------------------------------------------- -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 wxImageHistogram : public wxImageHistogramBase +{ +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; +}; + +//----------------------------------------------------------------------------- +// wxImage +//----------------------------------------------------------------------------- + class WXDLLEXPORT 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 ); - wxImage( wxInputStream& stream, long type = wxBITMAP_TYPE_ANY ); - wxImage( const wxString& name, const wxString& mimetype ); - wxImage( wxInputStream& stream, const wxString& mimetype ); + 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 ); + +#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 ); -#if wxUSE_GUI - // convertion to/from wxBitmap (deprecated, use wxBitmap's methods instead): - wxImage( const wxBitmap &bitmap ); - wxBitmap ConvertToBitmap() const; -#ifdef __WXGTK__ - wxBitmap ConvertToMonoBitmap( unsigned char red, unsigned char green, unsigned char blue ) const; -#endif -#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 ); 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& ) 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 ); + 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 ShrinkBy( int xFactor , int yFactor ) const ; + // rescales the image in place wxImage& Rescale( int width, int height ) { return *this = Scale(width, height); } // 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 = (wxPoint*) 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 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 @@ -151,42 +197,75 @@ public: unsigned char GetGreen( int x, int y ) const; unsigned char GetBlue( int x, int y ) const; - // used to manipulate the icons while extracting from .ico files - bool GetUnusedColour( unsigned char *r, unsigned char *g, unsigned char *b ); - bool ApplyMask( const wxImage & mask ); + 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); + + // 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 ); - virtual bool LoadFile( const wxString& name, long type = wxBITMAP_TYPE_ANY ); - virtual bool LoadFile( const wxString& name, const wxString& mimetype ); + 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 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 SetData( char unsigned *data, int new_width, int new_height ); + // 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 ); + void SetMask( bool mask = true ); bool HasMask() const; #if wxUSE_PALETTE @@ -203,8 +282,15 @@ public: int GetOptionInt(const wxString& name) const; bool HasOption(const wxString& name) const; - unsigned long CountColours( unsigned long stopafter = (unsigned long) -1 ); - unsigned long ComputeHistogram( wxHashTable &h ); + 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) { @@ -213,9 +299,9 @@ public: return *this; } - bool operator == (const wxImage& image) + bool operator == (const wxImage& image) const { return m_refData == image.m_refData; } - bool operator != (const wxImage& image) + bool operator != (const wxImage& image) const { return m_refData != image.m_refData; } static wxList& GetHandlers() { return sm_handlers; } @@ -227,6 +313,8 @@ public: static wxImageHandler *FindHandler( long imageType ); static wxImageHandler *FindHandlerMime( const wxString& mimetype ); + static wxString GetImageExtWildcard(); + static void CleanUpHandlers(); static void InitStandardHandlers(); @@ -256,6 +344,7 @@ WXDLLEXPORT_DATA(extern wxImage) wxNullImage; #include "wx/imagtiff.h" #include "wx/imagpnm.h" #include "wx/imagxpm.h" +#include "wx/imagiff.h" #endif // wxUSE_IMAGE