X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/72a9034bd4feac3ac32ec16bcb751a37a8c699cf..438959cca892a7651634cc3a7aad4819ac49b23c:/include/wx/image.h diff --git a/include/wx/image.h b/include/wx/image.h index 933f596c7b..4ca8379f80 100644 --- a/include/wx/image.h +++ b/include/wx/image.h @@ -18,6 +18,7 @@ #include "wx/string.h" #include "wx/gdicmn.h" #include "wx/hashmap.h" +#include "wx/arrstr.h" #if wxUSE_STREAMS # include "wx/stream.h" @@ -27,17 +28,20 @@ // which breaks the compilation below #undef index -#define wxIMAGE_OPTION_QUALITY wxString(_T("quality")) -#define wxIMAGE_OPTION_FILENAME wxString(_T("FileName")) +#define wxIMAGE_OPTION_QUALITY wxString(wxS("quality")) +#define wxIMAGE_OPTION_FILENAME wxString(wxS("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_RESOLUTION wxString(wxS("Resolution")) +#define wxIMAGE_OPTION_RESOLUTIONX wxString(wxS("ResolutionX")) +#define wxIMAGE_OPTION_RESOLUTIONY wxString(wxS("ResolutionY")) -#define wxIMAGE_OPTION_RESOLUTIONUNIT wxString(_T("ResolutionUnit")) +#define wxIMAGE_OPTION_RESOLUTIONUNIT wxString(wxS("ResolutionUnit")) -#define wxIMAGE_OPTION_MAX_WIDTH wxString(_T("MaxWidth")) -#define wxIMAGE_OPTION_MAX_HEIGHT wxString(_T("MaxHeight")) +#define wxIMAGE_OPTION_MAX_WIDTH wxString(wxS("MaxWidth")) +#define wxIMAGE_OPTION_MAX_HEIGHT wxString(wxS("MaxHeight")) + +#define wxIMAGE_OPTION_ORIGINAL_WIDTH wxString(wxS("OriginalWidth")) +#define wxIMAGE_OPTION_ORIGINAL_HEIGHT wxString(wxS("OriginalHeight")) // constants used with wxIMAGE_OPTION_RESOLUTIONUNIT // @@ -55,10 +59,19 @@ 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 @@ -97,10 +110,17 @@ public: { } #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 int GetImageCount( wxInputStream& stream ); + // 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), + bool WXUNUSED(verbose)=true, int WXUNUSED(index)=-1 ) + { return false; } + virtual bool SaveFile( wxImage *WXUNUSED(image), wxOutputStream& WXUNUSED(stream), + bool WXUNUSED(verbose)=true ) + { return false; } + + int GetImageCount( wxInputStream& stream ); + // save the stream position, call DoGetImageCount() and restore the position bool CanRead( wxInputStream& stream ) { return CallDoCanRead(stream); } bool CanRead( const wxString& name ); @@ -108,7 +128,7 @@ public: void SetName(const wxString& name) { m_name = name; } void SetExtension(const wxString& ext) { m_extension = ext; } - void SetAlExtensions(const wxArrayString& exts) { m_altExtensions = exts; } + void SetAltExtensions(const wxArrayString& exts) { m_altExtensions = exts; } void SetType(wxBitmapType type) { m_type = type; } void SetMimeType(const wxString& type) { m_mime = type; } const wxString& GetName() const { return m_name; } @@ -125,6 +145,13 @@ public: 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) ) + { 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; // save the stream position, call DoCanRead() and restore the position @@ -260,7 +287,7 @@ 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); } @@ -270,7 +297,7 @@ 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); @@ -293,10 +320,13 @@ 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 @@ -307,7 +337,9 @@ 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, @@ -319,6 +351,7 @@ 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 @@ -326,13 +359,17 @@ 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 ); @@ -356,7 +393,7 @@ 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); @@ -419,6 +456,7 @@ 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 @@ -527,15 +565,15 @@ 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); } @@ -557,6 +595,24 @@ 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