#include "wx/object.h"
#include "wx/string.h"
#include "wx/gdicmn.h"
-#include "wx/bitmap.h"
+#if WXWIN_COMPATIBILITY_2_2
+# include "wx/bitmap.h"
+#endif
#include "wx/hashmap.h"
#if wxUSE_STREAMS
class WXDLLEXPORT wxImageHandler;
class WXDLLEXPORT wxImage;
+class WXDLLEXPORT wxPalette;
//-----------------------------------------------------------------------------
// wxImageHandler
WX_DECLARE_EXPORTED_HASH_MAP(unsigned long, wxImageHistogramEntry,
wxIntegerHash, wxIntegerEqual,
- wxImageHistogram);
+ wxImageHistogramBase);
+
+class 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
#if WXWIN_COMPATIBILITY_2_2 && wxUSE_GUI
// conversion to/from wxBitmap (deprecated, use wxBitmap's methods instead):
- wxImage( const wxBitmap &bitmap );
- wxBitmap ConvertToBitmap() const;
+ wxDEPRECATED( wxImage(const wxBitmap &bitmap) );
+ wxDEPRECATED( wxBitmap ConvertToBitmap() const );
#ifdef __WXGTK__
wxBitmap ConvertToMonoBitmap( unsigned char red, unsigned char green, unsigned char blue ) const;
#endif
// 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); }
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);
+
// 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,
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);
// Mask functions
void SetMaskColour( unsigned char r, unsigned char g, unsigned char b );