X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/b254d1fe03c3ef822d029479de9fd81015c4a2fb..73302af6dddd667af4ebec69c800bc9de106f28e:/include/wx/image.h?ds=sidebyside diff --git a/include/wx/image.h b/include/wx/image.h index 257fd9773b..665d89534e 100644 --- a/include/wx/image.h +++ b/include/wx/image.h @@ -10,15 +10,14 @@ #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 -#include "wx/setup.h" +#include "wx/defs.h" #include "wx/object.h" #include "wx/string.h" #include "wx/gdicmn.h" -#include "wx/bitmap.h" #include "wx/hashmap.h" #if wxUSE_STREAMS @@ -27,14 +26,33 @@ #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")) + +// constants used with wxIMAGE_OPTION_RESOLUTIONUNIT +enum +{ + wxIMAGE_RESOLUTION_INCHES = 1, + wxIMAGE_RESOLUTION_CM = 2 +}; + //----------------------------------------------------------------------------- // classes //----------------------------------------------------------------------------- class WXDLLEXPORT wxImageHandler; class WXDLLEXPORT wxImage; +class WXDLLEXPORT wxPalette; //----------------------------------------------------------------------------- // wxImageHandler @@ -44,12 +62,12 @@ 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 - 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 ); @@ -90,14 +108,40 @@ 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 @@ -106,11 +150,14 @@ WX_DECLARE_EXPORTED_HASH_MAP(unsigned long, wxImageHistogramEntry, 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(){} + 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 ); #if wxUSE_STREAMS wxImage( wxInputStream& stream, long type = wxBITMAP_TYPE_ANY, int index = -1 ); @@ -120,17 +167,10 @@ 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): - wxDEPRECATED( wxImage(const wxBitmap &bitmap) ); - wxDEPRECATED( 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 ); + bool Create( const char** xpmData ); void Destroy(); // creates an identical copy of the image (the = operator @@ -138,7 +178,14 @@ public: 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 @@ -147,30 +194,41 @@ 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); } + // 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 = (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 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, @@ -180,6 +238,22 @@ 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); + + // 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 ); @@ -205,16 +279,26 @@ 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); + void InitAlpha(); // 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 @@ -235,8 +319,8 @@ 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 +346,8 @@ public: static wxImageHandler *FindHandler( long imageType ); static wxImageHandler *FindHandlerMime( const wxString& mimetype ); + static wxString GetImageExtWildcard(); + static void CleanUpHandlers(); static void InitStandardHandlers(); @@ -277,7 +363,7 @@ private: extern void WXDLLEXPORT wxInitAllImageHandlers(); -WXDLLEXPORT_DATA(extern wxImage) wxNullImage; +extern WXDLLEXPORT_DATA(wxImage) wxNullImage; //----------------------------------------------------------------------------- // wxImage handlers