include/wx/image.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/image.h
   3 // Purpose:     wxImage class
   4 // Author:      Robert Roebling
   5 // RCS-ID:      $Id$
   6 // Copyright:   (c) Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #ifndef _WX_IMAGE_H_
  11 #define _WX_IMAGE_H_
  12
  13 #include "wx/defs.h"
  14
  15 #if wxUSE_IMAGE
  16
  17 #include "wx/object.h"
  18 #include "wx/string.h"
  19 #include "wx/gdicmn.h"
  20 #include "wx/hashmap.h"
  21 #include "wx/arrstr.h"
  22
  23 #if wxUSE_STREAMS
  24 #  include "wx/stream.h"
  25 #endif
  26
  27 // on some systems (Unixware 7.x) index is defined as a macro in the headers
  28 // which breaks the compilation below
  29 #undef index
  30
  31 #define wxIMAGE_OPTION_QUALITY  wxString(wxT("quality"))
  32 #define wxIMAGE_OPTION_FILENAME wxString(wxT("FileName"))
  33
  34 #define wxIMAGE_OPTION_RESOLUTION            wxString(wxT("Resolution"))
  35 #define wxIMAGE_OPTION_RESOLUTIONX           wxString(wxT("ResolutionX"))
  36 #define wxIMAGE_OPTION_RESOLUTIONY           wxString(wxT("ResolutionY"))
  37
  38 #define wxIMAGE_OPTION_RESOLUTIONUNIT        wxString(wxT("ResolutionUnit"))
  39
  40 #define wxIMAGE_OPTION_MAX_WIDTH             wxString(wxT("MaxWidth"))
  41 #define wxIMAGE_OPTION_MAX_HEIGHT            wxString(wxT("MaxHeight"))
  42
  43 #define wxIMAGE_OPTION_ORIGINAL_WIDTH        wxString(wxT("OriginalWidth"))
  44 #define wxIMAGE_OPTION_ORIGINAL_HEIGHT       wxString(wxT("OriginalHeight"))
  45
  46 // constants used with wxIMAGE_OPTION_RESOLUTIONUNIT
  47 //
  48 // NB: don't change these values, they correspond to libjpeg constants
  49 enum wxImageResolution
  50 {
  51     // Resolution not specified
  52     wxIMAGE_RESOLUTION_NONE = 0,
  53
  54     // Resolution specified in inches
  55     wxIMAGE_RESOLUTION_INCHES = 1,
  56
  57     // Resolution specified in centimeters
  58     wxIMAGE_RESOLUTION_CM = 2
  59 };
  60
  61 // Constants for wxImage::Scale() for determining the level of quality
  62 enum wxImageResizeQuality
  63 {
  64     // different image resizing algorithms used by Scale() and Rescale()
  65     wxIMAGE_QUALITY_NEAREST = 0,
  66     wxIMAGE_QUALITY_BILINEAR = 1,
  67     wxIMAGE_QUALITY_BICUBIC = 2,
  68     wxIMAGE_QUALITY_BOX_AVERAGE = 3,
  69
  70     // default quality is low (but fast)
  71     wxIMAGE_QUALITY_NORMAL = wxIMAGE_QUALITY_NEAREST,
  72
  73     // highest (but best) quality
  74     wxIMAGE_QUALITY_HIGH
  75 };
  76
  77 // alpha channel values: fully transparent, default threshold separating
  78 // transparent pixels from opaque for a few functions dealing with alpha and
  79 // fully opaque
  80 const unsigned char wxIMAGE_ALPHA_TRANSPARENT = 0;
  81 const unsigned char wxIMAGE_ALPHA_THRESHOLD = 0x80;
  82 const unsigned char wxIMAGE_ALPHA_OPAQUE = 0xff;
  83
  84 //-----------------------------------------------------------------------------
  85 // classes
  86 //-----------------------------------------------------------------------------
  87
  88 class WXDLLIMPEXP_FWD_CORE wxImageHandler;
  89 class WXDLLIMPEXP_FWD_CORE wxImage;
  90 class WXDLLIMPEXP_FWD_CORE wxPalette;
  91
  92 //-----------------------------------------------------------------------------
  93 // wxVariant support
  94 //-----------------------------------------------------------------------------
  95
  96 #if wxUSE_VARIANT
  97 #include "wx/variant.h"
  98 DECLARE_VARIANT_OBJECT_EXPORTED(wxImage,WXDLLIMPEXP_CORE)
  99 #endif
 100
 101 //-----------------------------------------------------------------------------
 102 // wxImageHandler
 103 //-----------------------------------------------------------------------------
 104
 105 class WXDLLIMPEXP_CORE wxImageHandler: public wxObject
 106 {
 107 public:
 108     wxImageHandler()
 109         : m_name(wxEmptyString), m_extension(wxEmptyString), m_mime(), m_type(wxBITMAP_TYPE_INVALID)
 110         { }
 111
 112 #if wxUSE_STREAMS
 113     // NOTE: LoadFile and SaveFile are not pure virtuals to allow derived classes
 114     //       to implement only one of the two
 115     virtual bool LoadFile( wxImage *WXUNUSED(image), wxInputStream& WXUNUSED(stream),
 116                            bool WXUNUSED(verbose)=true, int WXUNUSED(index)=-1 )
 117         { return false; }
 118     virtual bool SaveFile( wxImage *WXUNUSED(image), wxOutputStream& WXUNUSED(stream),
 119                            bool WXUNUSED(verbose)=true )
 120         { return false; }
 121
 122     int GetImageCount( wxInputStream& stream );
 123         // save the stream position, call DoGetImageCount() and restore the position
 124
 125     bool CanRead( wxInputStream& stream ) { return CallDoCanRead(stream); }
 126     bool CanRead( const wxString& name );
 127 #endif // wxUSE_STREAMS
 128
 129     void SetName(const wxString& name) { m_name = name; }
 130     void SetExtension(const wxString& ext) { m_extension = ext; }
 131     void SetAltExtensions(const wxArrayString& exts) { m_altExtensions = exts; }
 132     void SetType(wxBitmapType type) { m_type = type; }
 133     void SetMimeType(const wxString& type) { m_mime = type; }
 134     const wxString& GetName() const { return m_name; }
 135     const wxString& GetExtension() const { return m_extension; }
 136     const wxArrayString& GetAltExtensions() const { return m_altExtensions; }
 137     wxBitmapType GetType() const { return m_type; }
 138     const wxString& GetMimeType() const { return m_mime; }
 139
 140 #if WXWIN_COMPATIBILITY_2_8
 141     wxDEPRECATED(
 142         void SetType(long type) { SetType((wxBitmapType)type); }
 143     )
 144 #endif // WXWIN_COMPATIBILITY_2_8
 145
 146 protected:
 147 #if wxUSE_STREAMS
 148     // NOTE: this function is allowed to change the current stream position
 149     //       since GetImageCount() will take care of restoring it later
 150     virtual int DoGetImageCount( wxInputStream& WXUNUSED(stream) )
 151         { return 1; }       // default return value is 1 image
 152
 153     // NOTE: this function is allowed to change the current stream position
 154     //       since CallDoCanRead() will take care of restoring it later
 155     virtual bool DoCanRead( wxInputStream& stream ) = 0;
 156
 157     // save the stream position, call DoCanRead() and restore the position
 158     bool CallDoCanRead(wxInputStream& stream);
 159 #endif // wxUSE_STREAMS
 160
 161     // helper for the derived classes SaveFile() implementations: returns the
 162     // values of x- and y-resolution options specified as the image options if
 163     // any
 164     static wxImageResolution
 165     GetResolutionFromOptions(const wxImage& image, int *x, int *y);
 166
 167
 168     wxString  m_name;
 169     wxString  m_extension;
 170     wxArrayString m_altExtensions;
 171     wxString  m_mime;
 172     wxBitmapType m_type;
 173
 174 private:
 175     DECLARE_CLASS(wxImageHandler)
 176 };
 177
 178 //-----------------------------------------------------------------------------
 179 // wxImageHistogram
 180 //-----------------------------------------------------------------------------
 181
 182 class WXDLLIMPEXP_CORE wxImageHistogramEntry
 183 {
 184 public:
 185     wxImageHistogramEntry() { index = value = 0; }
 186     unsigned long index;
 187     unsigned long value;
 188 };
 189
 190 WX_DECLARE_EXPORTED_HASH_MAP(unsigned long, wxImageHistogramEntry,
 191                              wxIntegerHash, wxIntegerEqual,
 192                              wxImageHistogramBase);
 193
 194 class WXDLLIMPEXP_CORE wxImageHistogram : public wxImageHistogramBase
 195 {
 196 public:
 197     wxImageHistogram() : wxImageHistogramBase(256) { }
 198
 199     // get the key in the histogram for the given RGB values
 200     static unsigned long MakeKey(unsigned char r,
 201                                  unsigned char g,
 202                                  unsigned char b)
 203     {
 204         return (r << 16) | (g << 8) | b;
 205     }
 206
 207     // find first colour that is not used in the image and has higher
 208     // RGB values than RGB(startR, startG, startB)
 209     //
 210     // returns true and puts this colour in r, g, b (each of which may be NULL)
 211     // on success or returns false if there are no more free colours
 212     bool FindFirstUnusedColour(unsigned char *r,
 213                                unsigned char *g,
 214                                unsigned char *b,
 215                                unsigned char startR = 1,
 216                                unsigned char startG = 0,
 217                                unsigned char startB = 0 ) const;
 218 };
 219
 220 //-----------------------------------------------------------------------------
 221 // wxImage
 222 //-----------------------------------------------------------------------------
 223
 224 class WXDLLIMPEXP_CORE wxImage: public wxObject
 225 {
 226 public:
 227     // red, green and blue are 8 bit unsigned integers in the range of 0..255
 228     // We use the identifier RGBValue instead of RGB, since RGB is #defined
 229     class RGBValue
 230     {
 231     public:
 232       RGBValue(unsigned char r=0, unsigned char g=0, unsigned char b=0)
 233         : red(r), green(g), blue(b) {}
 234         unsigned char red;
 235         unsigned char green;
 236         unsigned char blue;
 237     };
 238
 239     // hue, saturation and value are doubles in the range 0.0..1.0
 240     class HSVValue
 241     {
 242     public:
 243         HSVValue(double h=0.0, double s=0.0, double v=0.0)
 244             : hue(h), saturation(s), value(v) {}
 245         double hue;
 246         double saturation;
 247         double value;
 248     };
 249
 250     wxImage() {}
 251     wxImage( int width, int height, bool clear = true )
 252         { Create( width, height, clear ); }
 253     wxImage( int width, int height, unsigned char* data, bool static_data = false )
 254         { Create( width, height, data, static_data ); }
 255     wxImage( int width, int height, unsigned char* data, unsigned char* alpha, bool static_data = false )
 256         { Create( width, height, data, alpha, static_data ); }
 257
 258     // ctor variants using wxSize:
 259     wxImage( const wxSize& sz, bool clear = true )
 260         { Create( sz, clear ); }
 261     wxImage( const wxSize& sz, unsigned char* data, bool static_data = false )
 262         { Create( sz, data, static_data ); }
 263     wxImage( const wxSize& sz, unsigned char* data, unsigned char* alpha, bool static_data = false )
 264         { Create( sz, data, alpha, static_data ); }
 265
 266     wxImage( const wxString& name, wxBitmapType type = wxBITMAP_TYPE_ANY, int index = -1 )
 267         { LoadFile( name, type, index ); }
 268     wxImage( const wxString& name, const wxString& mimetype, int index = -1 )
 269         { LoadFile( name, mimetype, index ); }
 270     wxImage( const char* const* xpmData )
 271         { Create(xpmData); }
 272
 273 #if wxUSE_STREAMS
 274     wxImage( wxInputStream& stream, wxBitmapType type = wxBITMAP_TYPE_ANY, int index = -1 )
 275         { LoadFile( stream, type, index ); }
 276     wxImage( wxInputStream& stream, const wxString& mimetype, int index = -1 )
 277         { LoadFile( stream, mimetype, index ); }
 278 #endif // wxUSE_STREAMS
 279
 280     bool Create( const char* const* xpmData );
 281 #ifdef __BORLANDC__
 282     // needed for Borland 5.5
 283     wxImage( char** xpmData ) { Create(const_cast<const char* const*>(xpmData)); }
 284     bool Create( char** xpmData ) { return Create(const_cast<const char* const*>(xpmData)); }
 285 #endif
 286
 287     bool Create( int width, int height, bool clear = true );
 288     bool Create( int width, int height, unsigned char* data, bool static_data = false );
 289     bool Create( int width, int height, unsigned char* data, unsigned char* alpha, bool static_data = false );
 290
 291     // Create() variants using wxSize:
 292     bool Create( const wxSize& sz, bool clear = true )
 293         { return Create(sz.GetWidth(), sz.GetHeight(), clear); }
 294     bool Create( const wxSize& sz, unsigned char* data, bool static_data = false )
 295         { return Create(sz.GetWidth(), sz.GetHeight(), data, static_data); }
 296     bool Create( const wxSize& sz, unsigned char* data, unsigned char* alpha, bool static_data = false )
 297         { return Create(sz.GetWidth(), sz.GetHeight(), data, alpha, static_data); }
 298
 299     void Destroy();
 300
 301     // initialize the image data with zeroes
 302     void Clear(unsigned char value = 0);
 303
 304     // creates an identical copy of the image (the = operator
 305     // just raises the ref count)
 306     wxImage Copy() const;
 307
 308     // return the new image with size width*height
 309     wxImage GetSubImage( const wxRect& rect) const;
 310
 311     // Paste the image or part of this image into an image of the given size at the pos
 312     //  any newly exposed areas will be filled with the rgb colour
 313     //  by default if r = g = b = -1 then fill with this image's mask colour or find and
 314     //  set a suitable mask colour
 315     wxImage Size( const wxSize& size, const wxPoint& pos,
 316                   int r = -1, int g = -1, int b = -1 ) const;
 317
 318     // pastes image into this instance and takes care of
 319     // the mask colour and out of bounds problems
 320     void Paste( const wxImage &image, int x, int y );
 321
 322     // return the new image with size width*height
 323     wxImage Scale( int width, int height,
 324                    wxImageResizeQuality quality = wxIMAGE_QUALITY_NORMAL ) const;
 325
 326     // box averager and bicubic filters for up/down sampling
 327     wxImage ResampleNearest(int width, int height) const;
 328     wxImage ResampleBox(int width, int height) const;
 329     wxImage ResampleBilinear(int width, int height) const;
 330     wxImage ResampleBicubic(int width, int height) const;
 331
 332     // blur the image according to the specified pixel radius
 333     wxImage Blur(int radius) const;
 334     wxImage BlurHorizontal(int radius) const;
 335     wxImage BlurVertical(int radius) const;
 336
 337     wxImage ShrinkBy( int xFactor , int yFactor ) const ;
 338
 339     // rescales the image in place
 340     wxImage& Rescale( int width, int height,
 341                       wxImageResizeQuality quality = wxIMAGE_QUALITY_NORMAL )
 342         { return *this = Scale(width, height, quality); }
 343
 344     // resizes the image in place
 345     wxImage& Resize( const wxSize& size, const wxPoint& pos,
 346                      int r = -1, int g = -1, int b = -1 ) { return *this = Size(size, pos, r, g, b); }
 347
 348     // Rotates the image about the given point, 'angle' radians.
 349     // Returns the rotated image, leaving this image intact.
 350     wxImage Rotate(double angle, const wxPoint & centre_of_rotation,
 351                    bool interpolating = true, wxPoint * offset_after_rotation = NULL) const;
 352
 353     wxImage Rotate90( bool clockwise = true ) const;
 354     wxImage Rotate180() const;
 355     wxImage Mirror( bool horizontally = true ) const;
 356
 357     // replace one colour with another
 358     void Replace( unsigned char r1, unsigned char g1, unsigned char b1,
 359                   unsigned char r2, unsigned char g2, unsigned char b2 );
 360
 361     // Convert to greyscale image. Uses the luminance component (Y) of the image.
 362     // The luma value (YUV) is calculated using (R * weight_r) + (G * weight_g) + (B * weight_b), defaults to ITU-T BT.601
 363     wxImage ConvertToGreyscale(double weight_r, double weight_g, double weight_b) const;
 364     wxImage ConvertToGreyscale(void) const;
 365
 366     // convert to monochrome image (<r,g,b> will be replaced by white,
 367     // everything else by black)
 368     wxImage ConvertToMono( unsigned char r, unsigned char g, unsigned char b ) const;
 369
 370     // Convert to disabled (dimmed) image.
 371     wxImage ConvertToDisabled(unsigned char brightness = 255) const;
 372
 373     // these routines are slow but safe
 374     void SetRGB( int x, int y, unsigned char r, unsigned char g, unsigned char b );
 375     void SetRGB( const wxRect& rect, unsigned char r, unsigned char g, unsigned char b );
 376     unsigned char GetRed( int x, int y ) const;
 377     unsigned char GetGreen( int x, int y ) const;
 378     unsigned char GetBlue( int x, int y ) const;
 379
 380     void SetAlpha(int x, int y, unsigned char alpha);
 381     unsigned char GetAlpha(int x, int y) const;
 382
 383     // find first colour that is not used in the image and has higher
 384     // RGB values than <startR,startG,startB>
 385     bool FindFirstUnusedColour( unsigned char *r, unsigned char *g, unsigned char *b,
 386                                 unsigned char startR = 1, unsigned char startG = 0,
 387                                 unsigned char startB = 0 ) const;
 388     // Set image's mask to the area of 'mask' that has <r,g,b> colour
 389     bool SetMaskFromImage(const wxImage & mask,
 390                           unsigned char mr, unsigned char mg, unsigned char mb);
 391
 392     // converts image's alpha channel to mask (choosing mask colour
 393     // automatically or using the specified colour for the mask), if it has
 394     // any, does nothing otherwise:
 395     bool ConvertAlphaToMask(unsigned char threshold = wxIMAGE_ALPHA_THRESHOLD);
 396     bool ConvertAlphaToMask(unsigned char mr, unsigned char mg, unsigned char mb,
 397                             unsigned char threshold = wxIMAGE_ALPHA_THRESHOLD);
 398
 399
 400     // This method converts an image where the original alpha
 401     // information is only available as a shades of a colour
 402     // (actually shades of grey) typically when you draw anti-
 403     // aliased text into a bitmap. The DC drawinf routines
 404     // draw grey values on the black background although they
 405     // actually mean to draw white with differnt alpha values.
 406     // This method reverses it, assuming a black (!) background
 407     // and white text (actually only the red channel is read).
 408     // The method will then fill up the whole image with the
 409     // colour given.
 410     bool ConvertColourToAlpha( unsigned char r, unsigned char g, unsigned char b );
 411
 412     static bool CanRead( const wxString& name );
 413     static int GetImageCount( const wxString& name, wxBitmapType type = wxBITMAP_TYPE_ANY );
 414     virtual bool LoadFile( const wxString& name, wxBitmapType type = wxBITMAP_TYPE_ANY, int index = -1 );
 415     virtual bool LoadFile( const wxString& name, const wxString& mimetype, int index = -1 );
 416
 417 #if wxUSE_STREAMS
 418     static bool CanRead( wxInputStream& stream );
 419     static int GetImageCount( wxInputStream& stream, wxBitmapType type = wxBITMAP_TYPE_ANY );
 420     virtual bool LoadFile( wxInputStream& stream, wxBitmapType type = wxBITMAP_TYPE_ANY, int index = -1 );
 421     virtual bool LoadFile( wxInputStream& stream, const wxString& mimetype, int index = -1 );
 422 #endif
 423
 424     virtual bool SaveFile( const wxString& name ) const;
 425     virtual bool SaveFile( const wxString& name, wxBitmapType type ) const;
 426     virtual bool SaveFile( const wxString& name, const wxString& mimetype ) const;
 427
 428 #if wxUSE_STREAMS
 429     virtual bool SaveFile( wxOutputStream& stream, wxBitmapType type ) const;
 430     virtual bool SaveFile( wxOutputStream& stream, const wxString& mimetype ) const;
 431 #endif
 432
 433     bool Ok() const { return IsOk(); }
 434     bool IsOk() const;
 435     int GetWidth() const;
 436     int GetHeight() const;
 437
 438     wxSize GetSize() const
 439         { return wxSize(GetWidth(), GetHeight()); }
 440
 441     // Gets the type of image found by LoadFile or specified with SaveFile
 442     wxBitmapType GetType() const;
 443
 444     // Set the image type, this is normally only called if the image is being
 445     // created from data in the given format but not using LoadFile() (e.g.
 446     // wxGIFDecoder uses this)
 447     void SetType(wxBitmapType type);
 448
 449     // these functions provide fastest access to wxImage data but should be
 450     // used carefully as no checks are done
 451     unsigned char *GetData() const;
 452     void SetData( unsigned char *data, bool static_data=false );
 453     void SetData( unsigned char *data, int new_width, int new_height, bool static_data=false );
 454
 455     unsigned char *GetAlpha() const;    // may return NULL!
 456     bool HasAlpha() const { return GetAlpha() != NULL; }
 457     void SetAlpha(unsigned char *alpha = NULL, bool static_data=false);
 458     void InitAlpha();
 459     void ClearAlpha();
 460
 461     // return true if this pixel is masked or has alpha less than specified
 462     // threshold
 463     bool IsTransparent(int x, int y,
 464                        unsigned char threshold = wxIMAGE_ALPHA_THRESHOLD) const;
 465
 466     // Mask functions
 467     void SetMaskColour( unsigned char r, unsigned char g, unsigned char b );
 468     // Get the current mask colour or find a suitable colour
 469     // returns true if using current mask colour
 470     bool GetOrFindMaskColour( unsigned char *r, unsigned char *g, unsigned char *b ) const;
 471     unsigned char GetMaskRed() const;
 472     unsigned char GetMaskGreen() const;
 473     unsigned char GetMaskBlue() const;
 474     void SetMask( bool mask = true );
 475     bool HasMask() const;
 476
 477 #if wxUSE_PALETTE
 478     // Palette functions
 479     bool HasPalette() const;
 480     const wxPalette& GetPalette() const;
 481     void SetPalette(const wxPalette& palette);
 482 #endif // wxUSE_PALETTE
 483
 484     // Option functions (arbitrary name/value mapping)
 485     void SetOption(const wxString& name, const wxString& value);
 486     void SetOption(const wxString& name, int value);
 487     wxString GetOption(const wxString& name) const;
 488     int GetOptionInt(const wxString& name) const;
 489     bool HasOption(const wxString& name) const;
 490
 491     unsigned long CountColours( unsigned long stopafter = (unsigned long) -1 ) const;
 492
 493     // Computes the histogram of the image and fills a hash table, indexed
 494     // with integer keys built as 0xRRGGBB, containing wxImageHistogramEntry
 495     // objects. Each of them contains an 'index' (useful to build a palette
 496     // with the image colours) and a 'value', which is the number of pixels
 497     // in the image with that colour.
 498     // Returned value: # of entries in the histogram
 499     unsigned long ComputeHistogram( wxImageHistogram &h ) const;
 500
 501     // Rotates the hue of each pixel of the image. angle is a double in the range
 502     // -1.0..1.0 where -1.0 is -360 degrees and 1.0 is 360 degrees
 503     void RotateHue(double angle);
 504
 505     static wxList& GetHandlers() { return sm_handlers; }
 506     static void AddHandler( wxImageHandler *handler );
 507     static void InsertHandler( wxImageHandler *handler );
 508     static bool RemoveHandler( const wxString& name );
 509     static wxImageHandler *FindHandler( const wxString& name );
 510     static wxImageHandler *FindHandler( const wxString& extension, wxBitmapType imageType );
 511     static wxImageHandler *FindHandler( wxBitmapType imageType );
 512
 513     static wxImageHandler *FindHandlerMime( const wxString& mimetype );
 514
 515     static wxString GetImageExtWildcard();
 516
 517     static void CleanUpHandlers();
 518     static void InitStandardHandlers();
 519
 520     static HSVValue RGBtoHSV(const RGBValue& rgb);
 521     static RGBValue HSVtoRGB(const HSVValue& hsv);
 522
 523 #if WXWIN_COMPATIBILITY_2_8
 524     wxDEPRECATED_CONSTRUCTOR(
 525         wxImage(const wxString& name, long type, int index = -1)
 526         {
 527             LoadFile(name, (wxBitmapType)type, index);
 528         }
 529     )
 530
 531 #if wxUSE_STREAMS
 532     wxDEPRECATED_CONSTRUCTOR(
 533         wxImage(wxInputStream& stream, long type, int index = -1)
 534         {
 535             LoadFile(stream, (wxBitmapType)type, index);
 536         }
 537     )
 538
 539     wxDEPRECATED(
 540         bool LoadFile(wxInputStream& stream, long type, int index = -1)
 541         {
 542             return LoadFile(stream, (wxBitmapType)type, index);
 543         }
 544     )
 545
 546     wxDEPRECATED(
 547         bool SaveFile(wxOutputStream& stream, long type) const
 548         {
 549             return SaveFile(stream, (wxBitmapType)type);
 550         }
 551     )
 552 #endif // wxUSE_STREAMS
 553
 554     wxDEPRECATED(
 555         bool LoadFile(const wxString& name, long type, int index = -1)
 556         {
 557             return LoadFile(name, (wxBitmapType)type, index);
 558         }
 559     )
 560
 561     wxDEPRECATED(
 562         bool SaveFile(const wxString& name, long type) const
 563         {
 564             return SaveFile(name, (wxBitmapType)type);
 565         }
 566     )
 567
 568     static wxDEPRECATED(
 569         wxImageHandler *FindHandler(const wxString& ext, long type)
 570         {
 571             return FindHandler(ext, (wxBitmapType)type);
 572         }
 573     )
 574
 575     static wxDEPRECATED(
 576         wxImageHandler *FindHandler(long imageType)
 577         {
 578             return FindHandler((wxBitmapType)imageType);
 579         }
 580     )
 581 #endif // WXWIN_COMPATIBILITY_2_8
 582
 583 protected:
 584     static wxList   sm_handlers;
 585
 586     // return the index of the point with the given coordinates or -1 if the
 587     // image is invalid of the coordinates are out of range
 588     //
 589     // note that index must be multiplied by 3 when using it with RGB array
 590     long XYToIndex(int x, int y) const;
 591
 592     virtual wxObjectRefData* CreateRefData() const;
 593     virtual wxObjectRefData* CloneRefData(const wxObjectRefData* data) const;
 594
 595 private:
 596     friend class WXDLLIMPEXP_FWD_CORE wxImageHandler;
 597
 598     // Possible values for MakeEmptyClone() flags.
 599     enum
 600     {
 601         // Create an image with the same orientation as this one. This is the
 602         // default and only exists for symmetry with SwapOrientation.
 603         Clone_SameOrientation = 0,
 604
 605         // Create an image with the same height as this image width and the
 606         // same width as this image height.
 607         Clone_SwapOrientation = 1
 608     };
 609
 610     // Returns a new blank image with the same dimensions (or with width and
 611     // height swapped if Clone_SwapOrientation flag is given), alpha, and mask
 612     // as this image itself. This is used by several functions creating
 613     // modified versions of this image.
 614     wxImage MakeEmptyClone(int flags = Clone_SameOrientation) const;
 615
 616 #if wxUSE_STREAMS
 617     // read the image from the specified stream updating image type if
 618     // successful
 619     bool DoLoad(wxImageHandler& handler, wxInputStream& stream, int index);
 620
 621     // write the image to the specified stream and also update the image type
 622     // if successful
 623     bool DoSave(wxImageHandler& handler, wxOutputStream& stream) const;
 624 #endif // wxUSE_STREAMS
 625
 626     DECLARE_DYNAMIC_CLASS(wxImage)
 627 };
 628
 629
 630 extern void WXDLLIMPEXP_CORE wxInitAllImageHandlers();
 631
 632 extern WXDLLIMPEXP_DATA_CORE(wxImage)    wxNullImage;
 633
 634 //-----------------------------------------------------------------------------
 635 // wxImage handlers
 636 //-----------------------------------------------------------------------------
 637
 638 #include "wx/imagbmp.h"
 639 #include "wx/imagpng.h"
 640 #include "wx/imaggif.h"
 641 #include "wx/imagpcx.h"
 642 #include "wx/imagjpeg.h"
 643 #include "wx/imagtga.h"
 644 #include "wx/imagtiff.h"
 645 #include "wx/imagpnm.h"
 646 #include "wx/imagxpm.h"
 647 #include "wx/imagiff.h"
 648
 649 #endif // wxUSE_IMAGE
 650
 651 #endif
 652   // _WX_IMAGE_H_