+ 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); }
+ bool Create( const wxSize& sz, unsigned char* data, bool static_data = false )
+ { return Create(sz.GetWidth(), sz.GetHeight(), data, static_data); }
+ bool Create( const wxSize& sz, unsigned char* data, unsigned char* alpha, bool static_data = false )
+ { return Create(sz.GetWidth(), sz.GetHeight(), data, alpha, static_data); }
+
+ void Destroy();
+
+ // initialize the image data with zeroes
+ void Clear(unsigned char value = 0);
+
+ // creates an identical copy of the image (the = operator
+ // just raises the ref count)
+ wxImage Copy() const;
+
+ // return the new image with size width*height
+ 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
+ void Paste( const wxImage &image, int x, int y );
+
+ // return the new image with size width*height
+ 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
+ wxImage Blur(int radius) const;
+ wxImage BlurHorizontal(int radius) const;
+ wxImage BlurVertical(int radius) const;
+
+ 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 Rotate180() 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);
+ bool 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 );
projects / wxWidgets.git / blobdiff