+ wxImage ShrinkBy( int xFactor , int yFactor ) const ;
+
+ // rescales the image in place
+ 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,
+ 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 = NULL) 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 greyscale image. Uses the luminance component (Y) of the image.
+ // 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 (<r,g,b> 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 );
+ 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 <startR,startG,startB>
+ 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 <r,g,b> colour
+ bool SetMaskFromImage(const wxImage & mask,
+ unsigned char mr, unsigned char mg, unsigned char mb);
+
+ // converts image's alpha channel to mask (choosing mask colour
+ // 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,
+ unsigned char threshold = wxIMAGE_ALPHA_THRESHOLD);
+
+
+ // 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, wxBitmapType type = wxBITMAP_TYPE_ANY );
+ virtual bool LoadFile( const wxString& name, wxBitmapType 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 );
+ static int GetImageCount( wxInputStream& stream, wxBitmapType type = wxBITMAP_TYPE_ANY );
+ virtual bool LoadFile( wxInputStream& stream, wxBitmapType 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 ) const;
+ virtual bool SaveFile( const wxString& name, wxBitmapType type ) const;
+ virtual bool SaveFile( const wxString& name, const wxString& mimetype ) const;
+
+#if wxUSE_STREAMS
+ virtual bool SaveFile( wxOutputStream& stream, wxBitmapType type ) const;
+ virtual bool SaveFile( wxOutputStream& stream, const wxString& mimetype ) const;
+#endif
+
+ bool Ok() const { return IsOk(); }
+ bool IsOk() const;
+ int GetWidth() const;
+ int GetHeight() const;
+
+ wxSize GetSize() const
+ { return wxSize(GetWidth(), GetHeight()); }
+
+ // Gets the type of image found by LoadFile or specified with SaveFile
+ wxBitmapType GetType() const;
+
+ // Set the image type, this is normally only called if the image is being
+ // created from data in the given format but not using LoadFile() (e.g.
+ // wxGIFDecoder uses this)
+ void SetType(wxBitmapType type);
+
+ // 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, bool static_data=false );
+ void SetData( unsigned char *data, int new_width, int new_height, bool static_data=false );
+
+ unsigned char *GetAlpha() const; // may return NULL!
+ bool HasAlpha() const { return GetAlpha() != NULL; }
+ void SetAlpha(unsigned char *alpha = NULL, bool static_data=false);
+ void InitAlpha();
+
+ // return true if this pixel is masked or has alpha less than specified
+ // threshold
+ bool IsTransparent(int x, int y,
+ unsigned char threshold = wxIMAGE_ALPHA_THRESHOLD) const;
+
+ // 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 );
+ bool HasMask() const;
+
+#if wxUSE_PALETTE
+ // Palette functions
+ bool HasPalette() const;
+ const wxPalette& GetPalette() const;
+ void SetPalette(const wxPalette& palette);
+#endif // wxUSE_PALETTE
+
+ // Option functions (arbitrary name/value mapping)
+ void SetOption(const wxString& name, const wxString& value);
+ void SetOption(const wxString& name, int value);
+ wxString GetOption(const wxString& name) const;
+ int GetOptionInt(const wxString& name) const;
+ bool HasOption(const wxString& name) const;
+
+ 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;
+
+ // Rotates the hue of each pixel of the image. angle is a double in the range
+ // -1.0..1.0 where -1.0 is -360 degrees and 1.0 is 360 degrees
+ void RotateHue(double angle);
+
+ static wxList& GetHandlers() { return sm_handlers; }
+ static void AddHandler( wxImageHandler *handler );
+ static void InsertHandler( wxImageHandler *handler );
+ static bool RemoveHandler( const wxString& name );
+ static wxImageHandler *FindHandler( const wxString& name );
+ static wxImageHandler *FindHandler( const wxString& extension, wxBitmapType imageType );
+ static wxImageHandler *FindHandler( wxBitmapType imageType );
+
+ static wxImageHandler *FindHandlerMime( const wxString& mimetype );
+
+ static wxString GetImageExtWildcard();
+
+ static void CleanUpHandlers();
+ static void InitStandardHandlers();
+
+ static HSVValue RGBtoHSV(const RGBValue& rgb);
+ static RGBValue HSVtoRGB(const HSVValue& hsv);
+
+#if WXWIN_COMPATIBILITY_2_8
+ wxDEPRECATED_CONSTRUCTOR(
+ wxImage(const wxString& name, long type, int index = -1)
+ {
+ LoadFile(name, (wxBitmapType)type, index);
+ }
+ )
+
+#if wxUSE_STREAMS
+ wxDEPRECATED_CONSTRUCTOR(
+ wxImage(wxInputStream& stream, long type, int index = -1)
+ {
+ LoadFile(stream, (wxBitmapType)type, index);
+ }
+ )
+
+ wxDEPRECATED(
+ bool LoadFile(wxInputStream& stream, long type, int index = -1)
+ {
+ return LoadFile(stream, (wxBitmapType)type, index);
+ }
+ )
+
+ wxDEPRECATED(
+ bool SaveFile(wxOutputStream& stream, long type) const
+ {
+ return SaveFile(stream, (wxBitmapType)type);
+ }
+ )
+#endif // wxUSE_STREAMS
+
+ wxDEPRECATED(
+ bool LoadFile(const wxString& name, long type, int index = -1)
+ {
+ return LoadFile(name, (wxBitmapType)type, index);
+ }
+ )
+
+ wxDEPRECATED(
+ bool SaveFile(const wxString& name, long type) const
+ {
+ return SaveFile(name, (wxBitmapType)type);
+ }
+ )
+
+ wxDEPRECATED(
+ static wxImageHandler *FindHandler(const wxString& ext, long type)
+ {
+ return FindHandler(ext, (wxBitmapType)type);
+ }
+ )
+
+ wxDEPRECATED(
+ static wxImageHandler *FindHandler(long imageType)
+ {
+ return FindHandler((wxBitmapType)imageType);
+ }
+ )
+#endif // WXWIN_COMPATIBILITY_2_8
projects / wxWidgets.git / blobdiff