include/wx/mac/classic/bitmap.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        bitmap.h
   3 // Purpose:     wxBitmap class
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     1998-01-01
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Stefan Csomor
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_BITMAP_H_
  13 #define _WX_BITMAP_H_
  14
  15 #include "wx/palette.h"
  16
  17 // Bitmap
  18 class WXDLLEXPORT wxBitmap;
  19 class WXDLLEXPORT wxBitmapHandler;
  20 class WXDLLEXPORT wxControl;
  21 class WXDLLEXPORT wxCursor;
  22 class WXDLLEXPORT wxDC;
  23 class WXDLLEXPORT wxIcon;
  24 class WXDLLEXPORT wxImage;
  25 class WXDLLEXPORT wxPixelDataBase;
  26
  27 // A mask is a bitmap used for drawing bitmaps
  28 // it can be a monochrome bitmap or a multi-bit bitmap which transfers to alpha channels
  29 // transparently.
  30 class WXDLLEXPORT wxMask: public wxObject
  31 {
  32     DECLARE_DYNAMIC_CLASS(wxMask)
  33     DECLARE_NO_COPY_CLASS(wxMask)
  34
  35 public:
  36   wxMask();
  37
  38   // Construct a mask from a bitmap and a colour indicating
  39   // the transparent area
  40   wxMask(const wxBitmap& bitmap, const wxColour& colour);
  41
  42   // Construct a mask from a bitmap and a palette index indicating
  43   // the transparent area
  44   wxMask(const wxBitmap& bitmap, int paletteIndex);
  45
  46   // Construct a mask from a mono bitmap (copies the bitmap).
  47   wxMask(const wxBitmap& bitmap);
  48
  49   ~wxMask();
  50
  51   bool Create(const wxBitmap& bitmap, const wxColour& colour);
  52   bool Create(const wxBitmap& bitmap, int paletteIndex);
  53   bool Create(const wxBitmap& bitmap);
  54
  55   // Implementation
  56   bool PointMasked(int x, int y);
  57   inline WXHBITMAP GetMaskBitmap() const { return m_maskBitmap; }
  58   inline void SetMaskBitmap(WXHBITMAP bmp) { m_maskBitmap = bmp; }
  59   int GetDepth() const { return m_depth ; }
  60   void SetDepth( int depth ) { m_depth = depth ; }
  61 protected:
  62   WXHBITMAP m_maskBitmap;
  63   int m_depth ;
  64 };
  65
  66 enum { kMacBitmapTypeUnknownType , kMacBitmapTypeGrafWorld, kMacBitmapTypePict , kMacBitmapTypeIcon } ;
  67
  68 class WXDLLEXPORT wxBitmapRefData: public wxGDIRefData
  69 {
  70     DECLARE_NO_COPY_CLASS(wxBitmapRefData)
  71
  72     friend class WXDLLEXPORT wxBitmap;
  73     friend class WXDLLEXPORT wxIcon;
  74     friend class WXDLLEXPORT wxCursor;
  75 public:
  76     wxBitmapRefData();
  77     ~wxBitmapRefData();
  78
  79 public:
  80   int           m_width;
  81   int           m_height;
  82   int           m_depth;
  83   bool          m_ok;
  84   int           m_numColors;
  85 #if wxUSE_PALETTE
  86   wxPalette     m_bitmapPalette;
  87 #endif // wxUSE_PALETTE
  88   int           m_quality;
  89
  90   int            m_bitmapType ;
  91   WXHMETAFILE    m_hPict ;
  92   WXHBITMAP     m_hBitmap;
  93   WXHICON       m_hIcon ;
  94   wxMask *      m_bitmapMask; // Optional mask
  95   bool          m_hasAlpha;
  96 };
  97
  98 #define M_BITMAPDATA ((wxBitmapRefData *)m_refData)
  99
 100 class WXDLLEXPORT wxBitmapHandler: public wxBitmapHandlerBase
 101 {
 102   DECLARE_DYNAMIC_CLASS(wxBitmapHandler)
 103 public:
 104   wxBitmapHandler() : m_name(), m_extension(), m_type(0) { }
 105   virtual ~wxBitmapHandler();
 106
 107   virtual bool Create(wxBitmap *bitmap, void *data, long flags, int width, int height, int depth = 1);
 108   virtual bool LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
 109       int desiredWidth, int desiredHeight);
 110   virtual bool SaveFile(const wxBitmap *bitmap, const wxString& name, int type, const wxPalette *palette = NULL);
 111
 112   void SetName(const wxString& name) { m_name = name; }
 113   void SetExtension(const wxString& ext) { m_extension = ext; }
 114   void SetType(long type) { m_type = type; }
 115   wxString GetName() const { return m_name; }
 116   wxString GetExtension() const { return m_extension; }
 117   long GetType() const { return m_type; }
 118
 119 protected:
 120   wxString  m_name;
 121   wxString  m_extension;
 122   long      m_type;
 123 };
 124
 125 #define M_BITMAPHANDLERDATA ((wxBitmapRefData *)bitmap->GetRefData())
 126
 127 class WXDLLEXPORT wxBitmap: public wxBitmapBase
 128 {
 129   DECLARE_DYNAMIC_CLASS(wxBitmap)
 130
 131   friend class WXDLLEXPORT wxBitmapHandler;
 132
 133 public:
 134   wxBitmap(); // Platform-specific
 135
 136   // Initialize with raw data.
 137   wxBitmap(const char bits[], int width, int height, int depth = 1);
 138
 139   // Initialize with XPM data
 140   bool CreateFromXpm(const char **bits);
 141   wxBitmap(const char **bits);
 142   wxBitmap(char **bits);
 143
 144   // Load a file or resource
 145   wxBitmap(const wxString& name, wxBitmapType type = wxBITMAP_TYPE_PICT_RESOURCE);
 146
 147   // Constructor for generalised creation from data
 148   wxBitmap(void *data, wxBitmapType type, int width, int height, int depth = 1);
 149
 150   // If depth is omitted, will create a bitmap compatible with the display
 151   wxBitmap(int width, int height, int depth = -1);
 152
 153   // Convert from wxImage:
 154   wxBitmap(const wxImage& image, int depth = -1);
 155
 156   ~wxBitmap();
 157
 158   wxImage ConvertToImage() const;
 159
 160   // get the given part of bitmap
 161   wxBitmap GetSubBitmap( const wxRect& rect ) const;
 162
 163   virtual bool Create(int width, int height, int depth = -1);
 164   virtual bool Create(void *data, wxBitmapType type, int width, int height, int depth = 1);
 165   virtual bool LoadFile(const wxString& name, wxBitmapType type = wxBITMAP_TYPE_BMP_RESOURCE);
 166   virtual bool SaveFile(const wxString& name, wxBitmapType type, const wxPalette *cmap = NULL) const;
 167
 168   // copies the contents and mask of the given (colour) icon to the bitmap
 169   virtual bool CopyFromIcon(const wxIcon& icon);
 170
 171   bool Ok() const;
 172   int GetWidth() const;
 173   int GetHeight() const;
 174   int GetDepth() const;
 175   int GetQuality() const;
 176   void SetWidth(int w);
 177   void SetHeight(int h);
 178   void SetDepth(int d);
 179   void SetQuality(int q);
 180   void SetOk(bool isOk);
 181
 182 #if wxUSE_PALETTE
 183    wxPalette* GetPalette() const;
 184    void SetPalette(const wxPalette& palette);
 185 #endif // wxUSE_PALETTE
 186
 187   wxMask *GetMask() const;
 188   void SetMask(wxMask *mask) ;
 189
 190   int GetBitmapType() const;
 191
 192   inline bool operator == (const wxBitmap& bitmap) const { return m_refData == bitmap.m_refData; }
 193   inline bool operator != (const wxBitmap& bitmap) const { return m_refData != bitmap.m_refData; }
 194
 195   static void InitStandardHandlers();
 196
 197     // raw bitmap access support functions, for internal use only
 198     void *GetRawData(wxPixelDataBase& data, int bpp);
 199     void UngetRawData(wxPixelDataBase& data);
 200
 201     void UseAlpha();
 202
 203 public:
 204   WXHBITMAP GetHBITMAP() const;
 205   inline WXHICON GetHICON() const { return (M_BITMAPDATA ? M_BITMAPDATA->m_hIcon : 0); }
 206   WXHMETAFILE GetPict(bool *created = NULL ) const;
 207
 208   void SetHBITMAP(WXHBITMAP bmp);
 209   void SetHICON(WXHICON ico);
 210   void SetPict( WXHMETAFILE pict ) ;
 211
 212   bool FreeResource(bool force = FALSE);
 213 };
 214 #endif
 215   // _WX_BITMAP_H_