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/stream.h"
  22
  23 //-----------------------------------------------------------------------------
  24 // classes
  25 //-----------------------------------------------------------------------------
  26
  27 class WXDLLEXPORT wxImageHandler;
  28 #ifdef wxUSE_LIBPNG
  29 class WXDLLEXPORT wxPNGHandler;
  30 #endif
  31 class WXDLLEXPORT wxBMPHandler;
  32 class WXDLLEXPORT wxImage;
  33
  34 class WXDLLEXPORT wxBitmap;
  35
  36 //-----------------------------------------------------------------------------
  37 // wxImageHandler
  38 //-----------------------------------------------------------------------------
  39
  40 class WXDLLEXPORT wxImageHandler: public wxObject
  41 {
  42   DECLARE_DYNAMIC_CLASS(wxImageHandler)
  43
  44 public:
  45   wxImageHandler() { m_name = ""; m_extension = ""; m_type = 0; }
  46
  47   virtual bool LoadFile( wxImage *image, wxInputStream& stream );
  48   virtual bool SaveFile( wxImage *image, wxOutputStream& stream );
  49
  50   inline void SetName(const wxString& name) { m_name = name; }
  51   inline void SetExtension(const wxString& ext) { m_extension = ext; }
  52   inline void SetType(long type) { m_type = type; }
  53   inline wxString GetName() const { return m_name; }
  54   inline wxString GetExtension() const { return m_extension; }
  55   inline long GetType() const { return m_type; }
  56
  57 protected:
  58   wxString  m_name;
  59   wxString  m_extension;
  60   long      m_type;
  61
  62 };
  63
  64 //-----------------------------------------------------------------------------
  65 // wxPNGHandler
  66 //-----------------------------------------------------------------------------
  67
  68 #ifdef wxUSE_LIBPNG
  69 class WXDLLEXPORT wxPNGHandler: public wxImageHandler
  70 {
  71   DECLARE_DYNAMIC_CLASS(wxPNGHandler)
  72
  73 public:
  74
  75   inline wxPNGHandler()
  76   {
  77       m_name = "PNG file";
  78       m_extension = "png";
  79       m_type = wxBITMAP_TYPE_PNG;
  80   };
  81
  82   virtual bool LoadFile( wxImage *image, wxInputStream& stream );
  83   virtual bool SaveFile( wxImage *image, wxOutputStream& stream );
  84 };
  85 #endif
  86
  87 //-----------------------------------------------------------------------------
  88 // wxBMPHandler
  89 //-----------------------------------------------------------------------------
  90
  91 class WXDLLEXPORT wxBMPHandler: public wxImageHandler
  92 {
  93   DECLARE_DYNAMIC_CLASS(wxBMPHandler)
  94
  95 public:
  96
  97   inline wxBMPHandler()
  98   {
  99       m_name = "BMP file";
 100       m_extension = "bmp";
 101       m_type = wxBITMAP_TYPE_BMP;
 102   };
 103
 104   virtual bool LoadFile( wxImage *image, wxInputStream& stream );
 105 };
 106
 107 //-----------------------------------------------------------------------------
 108 // wxImage
 109 //-----------------------------------------------------------------------------
 110
 111 class WXDLLEXPORT wxImage: public wxObject
 112 {
 113   DECLARE_DYNAMIC_CLASS(wxImage)
 114
 115   friend class WXDLLEXPORT wxImageHandler;
 116
 117 public:
 118
 119   wxImage();
 120   wxImage( int width, int height );
 121   wxImage( const wxString& name, long type = wxBITMAP_TYPE_PNG );
 122   wxImage( wxInputStream& stream, long type = wxBITMAP_TYPE_PNG );
 123
 124   wxImage( const wxImage& image );
 125   wxImage( const wxImage* image );
 126
 127   // these functions get implemented in /src/(platform)/bitmap.cpp
 128   wxImage( const wxBitmap &bitmap );
 129   wxBitmap ConvertToBitmap() const;
 130
 131   void Create( int width, int height );
 132   void Destroy();
 133
 134   wxImage Scale( int width, int height );
 135
 136   // these routines are slow but safe
 137   void SetRGB( int x, int y, unsigned char r, unsigned char g, unsigned char b );
 138   unsigned char GetRed( int x, int y );
 139   unsigned char GetGreen( int x, int y );
 140   unsigned char GetBlue( int x, int y );
 141
 142   virtual bool LoadFile( const wxString& name, long type = wxBITMAP_TYPE_PNG );
 143   virtual bool LoadFile( wxInputStream& stream, long type = wxBITMAP_TYPE_PNG );
 144   virtual bool SaveFile( const wxString& name, int type );
 145   virtual bool SaveFile( wxOutputStream& stream, int type );
 146
 147   bool Ok() const;
 148   int GetWidth() const;
 149   int GetHeight() const;
 150
 151   char unsigned *GetData() const;
 152   void SetData( char unsigned *data );
 153
 154   void SetMaskColour( unsigned char r, unsigned char g, unsigned char b );
 155   unsigned char GetMaskRed() const;
 156   unsigned char GetMaskGreen() const;
 157   unsigned char GetMaskBlue() const;
 158   void SetMask( bool mask = TRUE );
 159   bool HasMask() const;
 160
 161   inline wxImage& operator = (const wxImage& image)
 162     { if (*this == image) return (*this); Ref(image); return *this; }
 163   inline bool operator == (const wxImage& image)
 164     { return m_refData == image.m_refData; }
 165   inline bool operator != (const wxImage& image)
 166     { return m_refData != image.m_refData; }
 167
 168   static inline wxList& GetHandlers() { return sm_handlers; }
 169   static void AddHandler( wxImageHandler *handler );
 170   static void InsertHandler( wxImageHandler *handler );
 171   static bool RemoveHandler( const wxString& name );
 172   static wxImageHandler *FindHandler( const wxString& name );
 173   static wxImageHandler *FindHandler( const wxString& extension, long imageType );
 174   static wxImageHandler *FindHandler( long imageType );
 175
 176   static void CleanUpHandlers();
 177   static void InitStandardHandlers();
 178
 179 protected:
 180
 181   static wxList sm_handlers;
 182
 183 };
 184
 185 #endif
 186   // _WX_IMAGE_H_