X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/2b5f62a0b2db198609b45dec622a018dae37008e..4fab71288ea3629e48fe100b337d9465266ef149:/include/wx/image.h diff --git a/include/wx/image.h b/include/wx/image.h index 848f5e324a..153065c764 100644 --- a/include/wx/image.h +++ b/include/wx/image.h @@ -10,7 +10,7 @@ #ifndef _WX_IMAGE_H_ #define _WX_IMAGE_H_ -#if defined(__GNUG__) && !defined(__APPLE__) +#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) #pragma interface "image.h" #endif @@ -18,7 +18,6 @@ #include "wx/object.h" #include "wx/string.h" #include "wx/gdicmn.h" -#include "wx/bitmap.h" #include "wx/hashmap.h" #if wxUSE_STREAMS @@ -27,6 +26,10 @@ #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")) //----------------------------------------------------------------------------- @@ -35,6 +38,7 @@ class WXDLLEXPORT wxImageHandler; class WXDLLEXPORT wxImage; +class WXDLLEXPORT wxPalette; //----------------------------------------------------------------------------- // wxImageHandler @@ -44,7 +48,7 @@ class WXDLLEXPORT 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(0) { } #if wxUSE_STREAMS @@ -90,14 +94,40 @@ private: class WXDLLEXPORT wxImageHistogramEntry { public: - wxImageHistogramEntry() : index(0), value(0) {} + wxImageHistogramEntry() { index = value = 0; } unsigned long index; unsigned long value; }; WX_DECLARE_EXPORTED_HASH_MAP(unsigned long, wxImageHistogramEntry, wxIntegerHash, wxIntegerEqual, - wxImageHistogram) + 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 @@ -107,7 +137,7 @@ class WXDLLEXPORT wxImage: public wxObject { public: wxImage(); - wxImage( int width, int height ); + 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 ); @@ -120,17 +150,8 @@ public: 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): - 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 ); void Destroy(); // creates an identical copy of the image (the = operator @@ -147,6 +168,8 @@ public: // 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); } @@ -162,7 +185,8 @@ public: 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 @@ -171,6 +195,9 @@ public: 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, @@ -180,6 +207,10 @@ 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: + 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 ); @@ -205,9 +236,15 @@ public: 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 ); @@ -235,8 +272,8 @@ public: // 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 + // 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; @@ -262,6 +299,8 @@ public: static wxImageHandler *FindHandler( long imageType ); static wxImageHandler *FindHandlerMime( const wxString& mimetype ); + static wxString GetImageExtWildcard(); + static void CleanUpHandlers(); static void InitStandardHandlers();