X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/9a83f860948059b0273b5cc6d9e43fadad3ebfca..cbef7338c1c7763042704c74d5ee6f62c7e10733:/include/wx/image.h diff --git a/include/wx/image.h b/include/wx/image.h index bc0a60e61d..e9fb5c5469 100644 --- a/include/wx/image.h +++ b/include/wx/image.h @@ -56,10 +56,19 @@ enum wxImageResolution }; // Constants for wxImage::Scale() for determining the level of quality -enum +enum wxImageResizeQuality { - wxIMAGE_QUALITY_NORMAL = 0, - wxIMAGE_QUALITY_HIGH = 1 + // different image resizing algorithms used by Scale() and Rescale() + wxIMAGE_QUALITY_NEAREST = 0, + wxIMAGE_QUALITY_BILINEAR = 1, + wxIMAGE_QUALITY_BICUBIC = 2, + wxIMAGE_QUALITY_BOX_AVERAGE = 3, + + // default quality is low (but fast) + wxIMAGE_QUALITY_NORMAL = wxIMAGE_QUALITY_NEAREST, + + // highest (but best) quality + wxIMAGE_QUALITY_HIGH }; // alpha channel values: fully transparent, default threshold separating @@ -100,10 +109,10 @@ public: #if wxUSE_STREAMS // 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), + 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), + virtual bool SaveFile( wxImage *WXUNUSED(image), wxOutputStream& WXUNUSED(stream), bool WXUNUSED(verbose)=true ) { return false; } @@ -135,9 +144,9 @@ 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) ) + 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; @@ -275,7 +284,7 @@ public: 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); } @@ -285,7 +294,7 @@ public: { return Create(sz.GetWidth(), sz.GetHeight(), data, alpha, static_data); } void Destroy(); - + // initialize the image data with zeroes void Clear(unsigned char value = 0); @@ -308,10 +317,13 @@ public: void Paste( const wxImage &image, int x, int y ); // return the new image with size width*height - wxImage Scale( int width, int height, int quality = wxIMAGE_QUALITY_NORMAL ) 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 @@ -322,7 +334,9 @@ public: wxImage ShrinkBy( int xFactor , int yFactor ) const ; // rescales the image in place - wxImage& Rescale( int width, int height, int quality = wxIMAGE_QUALITY_NORMAL ) { return *this = Scale(width, height, quality); } + 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, @@ -334,6 +348,7 @@ public: bool interpolating = true, wxPoint * offset_after_rotation = NULL) const; wxImage Rotate90( bool clockwise = true ) const; + wxImage Rotate180() const; wxImage Mirror( bool horizontally = true ) const; // replace one colour with another @@ -341,13 +356,17 @@ public: 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; + // The luma value (YUV) is calculated using (R * weight_r) + (G * weight_g) + (B * weight_b), defaults to ITU-T BT.601 + wxImage ConvertToGreyscale(double weight_r, double weight_g, double weight_b) const; + wxImage ConvertToGreyscale(void) 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; + // Convert to disabled (dimmed) image. + wxImage ConvertToDisabled(unsigned char brightness = 255) 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 ); @@ -371,7 +390,7 @@ public: // 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, + bool ConvertAlphaToMask(unsigned char mr, unsigned char mg, unsigned char mb, unsigned char threshold = wxIMAGE_ALPHA_THRESHOLD); @@ -434,6 +453,7 @@ public: bool HasAlpha() const { return GetAlpha() != NULL; } void SetAlpha(unsigned char *alpha = NULL, bool static_data=false); void InitAlpha(); + void ClearAlpha(); // return true if this pixel is masked or has alpha less than specified // threshold @@ -542,15 +562,15 @@ public: } ) - wxDEPRECATED( - static wxImageHandler *FindHandler(const wxString& ext, long type) + static wxDEPRECATED( + wxImageHandler *FindHandler(const wxString& ext, long type) { return FindHandler(ext, (wxBitmapType)type); } ) - wxDEPRECATED( - static wxImageHandler *FindHandler(long imageType) + static wxDEPRECATED( + wxImageHandler *FindHandler(long imageType) { return FindHandler((wxBitmapType)imageType); } @@ -572,6 +592,24 @@ protected: private: friend class WXDLLIMPEXP_FWD_CORE wxImageHandler; + // Possible values for MakeEmptyClone() flags. + enum + { + // Create an image with the same orientation as this one. This is the + // default and only exists for symmetry with SwapOrientation. + Clone_SameOrientation = 0, + + // Create an image with the same height as this image width and the + // same width as this image height. + Clone_SwapOrientation = 1 + }; + + // Returns a new blank image with the same dimensions (or with width and + // height swapped if Clone_SwapOrientation flag is given), alpha, and mask + // as this image itself. This is used by several functions creating + // modified versions of this image. + wxImage MakeEmptyClone(int flags = Clone_SameOrientation) const; + #if wxUSE_STREAMS // read the image from the specified stream updating image type if // successful