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
  22 #if wxUSE_STREAMS
  23 #include "wx/stream.h"
  24 #endif
  25
  26 //-----------------------------------------------------------------------------
  27 // classes
  28 //-----------------------------------------------------------------------------
  29
  30 class WXDLLEXPORT wxImageHandler;
  31 #if wxUSE_LIBPNG
  32 class WXDLLEXPORT wxPNGHandler;
  33 #endif
  34 #if wxUSE_LIBJPEG
  35 class WXDLLEXPORT wxJPEGHandler;
  36 #endif
  37 class WXDLLEXPORT wxBMPHandler;
  38 class WXDLLEXPORT wxImage;
  39
  40 class WXDLLEXPORT wxBitmap;
  41
  42 //-----------------------------------------------------------------------------
  43 // wxImageHandler
  44 //-----------------------------------------------------------------------------
  45
  46 class WXDLLEXPORT wxImageHandler: public wxObject
  47 {
  48   DECLARE_DYNAMIC_CLASS(wxImageHandler)
  49
  50 public:
  51   wxImageHandler() { m_name = ""; m_extension = ""; m_type = 0; }
  52
  53 #if wxUSE_STREAMS
  54   virtual bool LoadFile( wxImage *image, wxInputStream& stream );
  55   virtual bool SaveFile( wxImage *image, wxOutputStream& stream );
  56 #endif
  57
  58   inline void SetName(const wxString& name) { m_name = name; }
  59   inline void SetExtension(const wxString& ext) { m_extension = ext; }
  60   inline void SetType(long type) { m_type = 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
  65 protected:
  66   wxString  m_name;
  67   wxString  m_extension;
  68   long      m_type;
  69
  70 };
  71
  72 //-----------------------------------------------------------------------------
  73 // wxPNGHandler
  74 //-----------------------------------------------------------------------------
  75
  76 #if wxUSE_LIBPNG
  77 class WXDLLEXPORT wxPNGHandler: public wxImageHandler
  78 {
  79   DECLARE_DYNAMIC_CLASS(wxPNGHandler)
  80
  81 public:
  82
  83   inline wxPNGHandler()
  84   {
  85       m_name = "PNG file";
  86       m_extension = "png";
  87       m_type = wxBITMAP_TYPE_PNG;
  88   };
  89
  90 #if wxUSE_STREAMS
  91   virtual bool LoadFile( wxImage *image, wxInputStream& stream );
  92   virtual bool SaveFile( wxImage *image, wxOutputStream& stream );
  93 #endif
  94
  95 };
  96 #endif
  97
  98 //-----------------------------------------------------------------------------
  99 // wxJPEGHandler
 100 //-----------------------------------------------------------------------------
 101
 102 #if wxUSE_LIBJPEG
 103 class WXDLLEXPORT wxJPEGHandler: public wxImageHandler
 104 {
 105   DECLARE_DYNAMIC_CLASS(wxJPEGHandler)
 106
 107 public:
 108
 109   inline wxJPEGHandler()
 110   {
 111       m_name = "JPEG file";
 112       m_extension = "jpg";
 113       m_type = wxBITMAP_TYPE_JPEG;
 114   };
 115
 116   virtual bool LoadFile( wxImage *image, wxInputStream& stream );
 117   virtual bool SaveFile( wxImage *image, wxOutputStream& stream );
 118 };
 119 #endif
 120
 121 //-----------------------------------------------------------------------------
 122 // wxBMPHandler
 123 //-----------------------------------------------------------------------------
 124
 125 class WXDLLEXPORT wxBMPHandler: public wxImageHandler
 126 {
 127   DECLARE_DYNAMIC_CLASS(wxBMPHandler)
 128
 129 public:
 130
 131   inline wxBMPHandler()
 132   {
 133       m_name = "BMP file";
 134       m_extension = "bmp";
 135       m_type = wxBITMAP_TYPE_BMP;
 136   };
 137
 138 #if wxUSE_STREAMS
 139   virtual bool LoadFile( wxImage *image, wxInputStream& stream );
 140 #endif
 141 };
 142
 143 //-----------------------------------------------------------------------------
 144 // wxImage
 145 //-----------------------------------------------------------------------------
 146
 147 class WXDLLEXPORT wxImage: public wxObject
 148 {
 149   DECLARE_DYNAMIC_CLASS(wxImage)
 150
 151   friend class WXDLLEXPORT wxImageHandler;
 152
 153 public:
 154
 155   wxImage();
 156   wxImage( int width, int height );
 157   wxImage( const wxString& name, long type = wxBITMAP_TYPE_PNG );
 158   wxImage( wxInputStream& stream, long type = wxBITMAP_TYPE_PNG );
 159
 160   wxImage( const wxImage& image );
 161   wxImage( const wxImage* image );
 162
 163   // these functions get implemented in /src/(platform)/bitmap.cpp
 164   wxImage( const wxBitmap &bitmap );
 165   wxBitmap ConvertToBitmap() const;
 166
 167   void Create( int width, int height );
 168   void Destroy();
 169
 170   wxImage Scale( int width, int height );
 171
 172   // these routines are slow but safe
 173   void SetRGB( int x, int y, unsigned char r, unsigned char g, unsigned char b );
 174   unsigned char GetRed( int x, int y );
 175   unsigned char GetGreen( int x, int y );
 176   unsigned char GetBlue( int x, int y );
 177
 178   virtual bool LoadFile( const wxString& name, long type = wxBITMAP_TYPE_PNG );
 179
 180 #if wxUSE_STREAMS
 181   virtual bool LoadFile( wxInputStream& stream, long type = wxBITMAP_TYPE_PNG );
 182 #endif
 183
 184   virtual bool SaveFile( const wxString& name, int type );
 185
 186 #if wxUSE_STREAMS
 187   virtual bool SaveFile( wxOutputStream& stream, int type );
 188 #endif
 189
 190   bool Ok() const;
 191   int GetWidth() const;
 192   int GetHeight() const;
 193
 194   char unsigned *GetData() const;
 195   void SetData( char unsigned *data );
 196
 197   void SetMaskColour( unsigned char r, unsigned char g, unsigned char b );
 198   unsigned char GetMaskRed() const;
 199   unsigned char GetMaskGreen() const;
 200   unsigned char GetMaskBlue() const;
 201   void SetMask( bool mask = TRUE );
 202   bool HasMask() const;
 203
 204   inline wxImage& operator = (const wxImage& image)
 205     { if ((*this) == image)
 206           return (*this);
 207       Ref(image);
 208       return *this; }
 209
 210   inline bool operator == (const wxImage& image)
 211     { return m_refData == image.m_refData; }
 212   inline bool operator != (const wxImage& image)
 213     { return m_refData != image.m_refData; }
 214
 215   static inline wxList& GetHandlers() { return sm_handlers; }
 216   static void AddHandler( wxImageHandler *handler );
 217   static void InsertHandler( wxImageHandler *handler );
 218   static bool RemoveHandler( const wxString& name );
 219   static wxImageHandler *FindHandler( const wxString& name );
 220   static wxImageHandler *FindHandler( const wxString& extension, long imageType );
 221   static wxImageHandler *FindHandler( long imageType );
 222
 223   static void CleanUpHandlers();
 224   static void InitStandardHandlers();
 225
 226 protected:
 227
 228   static wxList sm_handlers;
 229
 230 };
 231
 232 #endif
 233   // _WX_IMAGE_H_