include/wx/image.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        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 #ifdef __GNUG__
  14 #pragma interface "image.h"
  15 #endif
  16
  17 #include "wx/setup.h"
  18 #include "wx/object.h"
  19 #include "wx/string.h"
  20 #include "wx/gdicmn.h"
  21 #include "wx/bitmap.h"
  22
  23 #if wxUSE_STREAMS
  24     #include "wx/stream.h"
  25 #endif
  26
  27 //-----------------------------------------------------------------------------
  28 // classes
  29 //-----------------------------------------------------------------------------
  30
  31 class WXDLLEXPORT wxImageHandler;
  32 #if wxUSE_LIBPNG
  33 class WXDLLEXPORT wxPNGHandler;
  34 #endif
  35 #if wxUSE_LIBJPEG
  36 class WXDLLEXPORT wxJPEGHandler;
  37 #endif
  38 class WXDLLEXPORT wxBMPHandler;
  39 class WXDLLEXPORT wxImage;
  40
  41 //-----------------------------------------------------------------------------
  42 // wxImageHandler
  43 //-----------------------------------------------------------------------------
  44
  45 class WXDLLEXPORT wxImageHandler: public wxObject
  46 {
  47   DECLARE_DYNAMIC_CLASS(wxImageHandler)
  48
  49 public:
  50   wxImageHandler() { m_name = ""; m_extension = ""; m_type = 0; }
  51
  52 #if wxUSE_STREAMS
  53   virtual bool LoadFile( wxImage *image, wxInputStream& stream );
  54   virtual bool SaveFile( wxImage *image, wxOutputStream& stream );
  55 #endif
  56
  57   inline void SetName(const wxString& name) { m_name = name; }
  58   inline void SetExtension(const wxString& ext) { m_extension = ext; }
  59   inline void SetType(long type) { m_type = type; }
  60   inline void SetMimeType(const wxString& type) { m_mime = type; }
  61   inline wxString GetName() const { return m_name; }
  62   inline wxString GetExtension() const { return m_extension; }
  63   inline long GetType() const { return m_type; }
  64   inline wxString GetMimeType() const { return m_mime; }
  65
  66 protected:
  67   wxString  m_name;
  68   wxString  m_extension;
  69   wxString  m_mime;
  70   long      m_type;
  71
  72 };
  73
  74 //-----------------------------------------------------------------------------
  75 // wxPNGHandler
  76 //-----------------------------------------------------------------------------
  77
  78 #if wxUSE_LIBPNG
  79 class WXDLLEXPORT wxPNGHandler: public wxImageHandler
  80 {
  81   DECLARE_DYNAMIC_CLASS(wxPNGHandler)
  82
  83 public:
  84
  85   inline wxPNGHandler()
  86   {
  87       m_name = "PNG file";
  88       m_extension = "png";
  89       m_type = wxBITMAP_TYPE_PNG;
  90       m_mime = "image/png";
  91   };
  92
  93 #if wxUSE_STREAMS
  94   virtual bool LoadFile( wxImage *image, wxInputStream& stream );
  95   virtual bool SaveFile( wxImage *image, wxOutputStream& stream );
  96 #endif
  97 };
  98 #endif
  99
 100 //-----------------------------------------------------------------------------
 101 // wxJPEGHandler
 102 //-----------------------------------------------------------------------------
 103
 104 #if wxUSE_LIBJPEG
 105 class WXDLLEXPORT wxJPEGHandler: public wxImageHandler
 106 {
 107   DECLARE_DYNAMIC_CLASS(wxJPEGHandler)
 108
 109 public:
 110
 111   inline wxJPEGHandler()
 112   {
 113       m_name = "JPEG file";
 114       m_extension = "jpg";
 115       m_type = wxBITMAP_TYPE_JPEG;
 116       m_mime = "image/jpeg";
 117   };
 118
 119 #if wxUSE_STREAMS
 120   virtual bool LoadFile( wxImage *image, wxInputStream& stream );
 121   virtual bool SaveFile( wxImage *image, wxOutputStream& stream );
 122 #endif
 123 };
 124 #endif
 125
 126 //-----------------------------------------------------------------------------
 127 // wxBMPHandler
 128 //-----------------------------------------------------------------------------
 129
 130 class WXDLLEXPORT wxBMPHandler: public wxImageHandler
 131 {
 132   DECLARE_DYNAMIC_CLASS(wxBMPHandler)
 133
 134 public:
 135
 136   inline wxBMPHandler()
 137   {
 138       m_name = "BMP file";
 139       m_extension = "bmp";
 140       m_type = wxBITMAP_TYPE_BMP;
 141       m_mime = "image/bmp";
 142   };
 143
 144 #if wxUSE_STREAMS
 145   virtual bool LoadFile( wxImage *image, wxInputStream& stream );
 146 #endif
 147 };
 148
 149 //-----------------------------------------------------------------------------
 150 // wxGIFHandler
 151 //-----------------------------------------------------------------------------
 152
 153 class WXDLLEXPORT wxGIFHandler : public wxImageHandler
 154 {
 155   DECLARE_DYNAMIC_CLASS(wxGIFHandler)
 156
 157 public:
 158
 159   inline wxGIFHandler()
 160   {
 161       m_name = "GIF file";
 162       m_extension = "gif";
 163       m_type = wxBITMAP_TYPE_GIF;
 164       m_mime = "image/gif";
 165   };
 166
 167 #if wxUSE_STREAMS
 168   virtual bool LoadFile( wxImage *image, wxInputStream& stream );
 169   virtual bool SaveFile( wxImage *image, wxOutputStream& stream );
 170 #endif
 171 };
 172
 173 //-----------------------------------------------------------------------------
 174 // wxImage
 175 //-----------------------------------------------------------------------------
 176
 177 class WXDLLEXPORT wxImage: public wxObject
 178 {
 179   DECLARE_DYNAMIC_CLASS(wxImage)
 180
 181   friend class WXDLLEXPORT wxImageHandler;
 182
 183 public:
 184
 185   wxImage();
 186   wxImage( int width, int height );
 187   wxImage( const wxString& name, long type = wxBITMAP_TYPE_PNG );
 188   wxImage( wxInputStream& stream, long type = wxBITMAP_TYPE_PNG );
 189   wxImage( const wxString& name, const wxString& mimetype );
 190   wxImage( wxInputStream& stream, const wxString& mimetype );
 191
 192   wxImage( const wxImage& image );
 193   wxImage( const wxImage* image );
 194
 195   // these functions get implemented in /src/(platform)/bitmap.cpp
 196   wxImage( const wxBitmap &bitmap );
 197   operator wxBitmap() const { return ConvertToBitmap(); }
 198   wxBitmap ConvertToBitmap() const;
 199
 200   void Create( int width, int height );
 201   void Destroy();
 202
 203   // return the new image with size width*height
 204   wxImage Scale( int width, int height ) const;
 205
 206   // rescales the image in place
 207   void Rescale( int width, int height ) { *this = Scale(width, height); }
 208
 209   // these routines are slow but safe
 210   void SetRGB( int x, int y, unsigned char r, unsigned char g, unsigned char b );
 211   unsigned char GetRed( int x, int y );
 212   unsigned char GetGreen( int x, int y );
 213   unsigned char GetBlue( int x, int y );
 214
 215   virtual bool LoadFile( const wxString& name, long type = wxBITMAP_TYPE_PNG );
 216   virtual bool LoadFile( const wxString& name, const wxString& mimetype );
 217
 218 #if wxUSE_STREAMS
 219   virtual bool LoadFile( wxInputStream& stream, long type = wxBITMAP_TYPE_PNG );
 220   virtual bool LoadFile( wxInputStream& stream, const wxString& mimetype );
 221 #endif
 222
 223   virtual bool SaveFile( const wxString& name, int type );
 224   virtual bool SaveFile( const wxString& name, const wxString& mimetype );
 225
 226 #if wxUSE_STREAMS
 227   virtual bool SaveFile( wxOutputStream& stream, int type );
 228   virtual bool SaveFile( wxOutputStream& stream, const wxString& mimetype );
 229 #endif
 230
 231   bool Ok() const;
 232   int GetWidth() const;
 233   int GetHeight() const;
 234
 235   char unsigned *GetData() const;
 236   void SetData( char unsigned *data );
 237
 238   void SetMaskColour( unsigned char r, unsigned char g, unsigned char b );
 239   unsigned char GetMaskRed() const;
 240   unsigned char GetMaskGreen() const;
 241   unsigned char GetMaskBlue() const;
 242   void SetMask( bool mask = TRUE );
 243   bool HasMask() const;
 244
 245   wxImage& operator = (const wxImage& image)
 246   {
 247     if ( (*this) != image )
 248       Ref(image);
 249     return *this;
 250   }
 251
 252   bool operator == (const wxImage& image)
 253     { return m_refData == image.m_refData; }
 254   bool operator != (const wxImage& image)
 255     { return m_refData != image.m_refData; }
 256
 257   static wxList& GetHandlers() { return sm_handlers; }
 258   static void AddHandler( wxImageHandler *handler );
 259   static void InsertHandler( wxImageHandler *handler );
 260   static bool RemoveHandler( const wxString& name );
 261   static wxImageHandler *FindHandler( const wxString& name );
 262   static wxImageHandler *FindHandler( const wxString& extension, long imageType );
 263   static wxImageHandler *FindHandler( long imageType );
 264   static wxImageHandler *FindHandlerMime( const wxString& mimetype );
 265
 266   static void CleanUpHandlers();
 267   static void InitStandardHandlers();
 268
 269 protected:
 270
 271   static wxList sm_handlers;
 272
 273 };
 274
 275 #endif
 276   // _WX_IMAGE_H_
 277