include/wx/os2/bitmap.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/os2/bitmap.h
   3 // Purpose:     wxBitmap class
   4 // Author:      David Webster
   5 // Modified by:
   6 // Created:     11/28/99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) David Webster
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_BITMAP_H_
  13 #define _WX_BITMAP_H_
  14
  15 #include "wx/os2/private.h"
  16 #include "wx/os2/gdiimage.h"
  17 #include "wx/gdicmn.h"
  18 #include "wx/palette.h"
  19
  20 class WXDLLIMPEXP_FWD_CORE wxDC;
  21 class WXDLLIMPEXP_FWD_CORE wxControl;
  22 class WXDLLIMPEXP_FWD_CORE wxBitmap;
  23 class WXDLLIMPEXP_FWD_CORE wxBitmapHandler;
  24 class WXDLLIMPEXP_FWD_CORE wxIcon;
  25 class WXDLLIMPEXP_FWD_CORE wxMask;
  26 class WXDLLIMPEXP_FWD_CORE wxCursor;
  27 class WXDLLIMPEXP_FWD_CORE wxControl;
  28 class WXDLLIMPEXP_FWD_CORE wxImage;
  29 class WXDLLIMPEXP_FWD_CORE wxPixelDataBase;
  30
  31 // ----------------------------------------------------------------------------
  32 // Bitmap data
  33 //
  34 // NB: this class is private, but declared here to make it possible inline
  35 //     wxBitmap functions accessing it
  36 // ----------------------------------------------------------------------------
  37
  38 class WXDLLIMPEXP_CORE wxBitmapRefData : public wxGDIImageRefData
  39 {
  40 public:
  41     wxBitmapRefData();
  42     wxBitmapRefData(const wxBitmapRefData &tocopy);
  43     virtual ~wxBitmapRefData() { Free(); }
  44
  45     virtual void Free();
  46
  47 public:
  48     int                             m_nNumColors;
  49     wxPalette                       m_vBitmapPalette;
  50     int                             m_nQuality;
  51
  52     // OS2-specific
  53     // ------------
  54
  55     wxDC*                           m_pSelectedInto;
  56
  57     //
  58     // Optional mask for transparent drawing
  59     //
  60     wxMask*                         m_pBitmapMask;
  61 }; // end of CLASS wxBitmapRefData
  62
  63 // ----------------------------------------------------------------------------
  64 // wxBitmap: a mono or colour bitmap
  65 // ----------------------------------------------------------------------------
  66
  67 class WXDLLIMPEXP_CORE wxBitmap : public wxGDIImage
  68 {
  69 public:
  70     // default ctor creates an invalid bitmap, you must Create() it later
  71     wxBitmap() { Init(); }
  72
  73     // Copy constructors
  74     inline wxBitmap(const wxBitmap& rBitmap)
  75         : wxGDIImage(rBitmap)
  76     {
  77         Init();
  78         SetHandle(rBitmap.GetHandle());
  79     }
  80
  81     // Initialize with raw data
  82     wxBitmap( const char bits[]
  83              ,int        nWidth
  84              ,int        nHeight
  85              ,int        nDepth = 1
  86             );
  87
  88     // Initialize with XPM data
  89     wxBitmap(const char* const* bits);
  90 #ifdef wxNEEDS_CHARPP
  91     // needed for old GCC
  92     wxBitmap(char** data)
  93     {
  94         *this = wxBitmap(wx_const_cast(const char* const*, data));
  95     }
  96 #endif
  97
  98     // Load a resource
  99     wxBitmap( int             nId
 100              ,wxBitmapType    lType = wxBITMAP_TYPE_BMP_RESOURCE
 101             );
 102
 103     // For compatiability with other ports, under OS/2 does same as default ctor
 104     inline wxBitmap( const wxString& WXUNUSED(rFilename)
 105                     ,wxBitmapType    WXUNUSED(lType)
 106                    )
 107     { Init(); }
 108     // New constructor for generalised creation from data
 109     wxBitmap( const void* pData
 110              ,wxBitmapType lType
 111              ,int   nWidth
 112              ,int   nHeight
 113              ,int   nDepth = 1
 114             );
 115
 116     // If depth is omitted, will create a bitmap compatible with the display
 117     wxBitmap( int nWidth, int nHeight, int nDepth = -1 );
 118
 119     wxBitmap( const wxImage& image, int depth = -1 )
 120                          { (void)CreateFromImage(image, depth); }
 121
 122     // we must have this, otherwise icons are silently copied into bitmaps using
 123     // the copy ctor but the resulting bitmap is invalid!
 124     inline wxBitmap(const wxIcon& rIcon)
 125       { Init(); CopyFromIcon(rIcon); }
 126
 127     wxBitmap& operator=(const wxIcon& rIcon)
 128     {
 129         (void)CopyFromIcon(rIcon);
 130
 131         return(*this);
 132     }
 133
 134     wxBitmap& operator=(const wxCursor& rCursor)
 135     {
 136         (void)CopyFromCursor(rCursor);
 137         return (*this);
 138     }
 139
 140     virtual ~wxBitmap();
 141
 142     wxImage ConvertToImage() const;
 143
 144     // get the given part of bitmap
 145     wxBitmap GetSubBitmap(const wxRect& rRect) const;
 146
 147     // copies the contents and mask of the given (colour) icon to the bitmap
 148     bool CopyFromIcon(const wxIcon& rIcon);
 149
 150     // copies the contents and mask of the given cursor to the bitmap
 151     bool CopyFromCursor(const wxCursor& rCursor);
 152
 153     virtual bool Create( int nWidth
 154                         ,int nHeight
 155                         ,int nDepth = -1
 156                        );
 157     virtual bool Create( const void* pData
 158                         ,wxBitmapType lType
 159                         ,int   nWidth
 160                         ,int   nHeight
 161                         ,int   nDepth = 1
 162                        );
 163     virtual bool LoadFile( int             nId
 164                           ,wxBitmapType    lType = wxBITMAP_TYPE_BMP_RESOURCE
 165                          );
 166     virtual bool LoadFile( const wxString& rName
 167                           ,wxBitmapType    lType = wxBITMAP_TYPE_XPM
 168                          );
 169     virtual bool SaveFile( const wxString&  rName
 170                           ,wxBitmapType     lType
 171                           ,const wxPalette* pCmap = NULL
 172                          );
 173
 174     inline wxBitmapRefData* GetBitmapData() const
 175       { return (wxBitmapRefData *)m_refData; }
 176
 177     // raw bitmap access support functions
 178     void *GetRawData(wxPixelDataBase& data, int bpp);
 179     void UngetRawData(wxPixelDataBase& data);
 180
 181     inline int GetQuality() const
 182       { return (GetBitmapData() ? GetBitmapData()->m_nQuality : 0); }
 183
 184     void SetQuality(int nQ);
 185
 186     wxPalette* GetPalette() const
 187       { return (GetBitmapData() ? (& GetBitmapData()->m_vBitmapPalette) : (wxPalette*) NULL); }
 188
 189     void       SetPalette(const wxPalette& rPalette);
 190
 191     inline wxMask* GetMask() const
 192       { return (GetBitmapData() ? GetBitmapData()->m_pBitmapMask : (wxMask*) NULL); }
 193
 194     void SetMask(wxMask* pMask) ;
 195
 196     // Implementation
 197 public:
 198     inline void SetHBITMAP(WXHBITMAP hBmp)
 199       { SetHandle((WXHANDLE)hBmp); }
 200
 201     inline WXHBITMAP GetHBITMAP() const
 202       { return (WXHBITMAP)GetHandle(); }
 203
 204     inline void  SetSelectedInto(wxDC* pDc)
 205       { if (GetBitmapData()) GetBitmapData()->m_pSelectedInto = pDc; }
 206
 207     inline wxDC* GetSelectedInto() const
 208       { return (GetBitmapData() ? GetBitmapData()->m_pSelectedInto : (wxDC*) NULL); }
 209
 210     inline bool IsMono(void) const { return m_bIsMono; }
 211
 212     // An OS/2 version that probably doesn't do anything like the msw version
 213     wxBitmap GetBitmapForDC(wxDC& rDc) const;
 214
 215 protected:
 216     // common part of all ctors
 217     void Init();
 218
 219     inline virtual wxGDIImageRefData* CreateData() const
 220         { return new wxBitmapRefData; }
 221
 222     bool CreateFromImage(const wxImage& image, int depth);
 223
 224     virtual wxGDIRefData *CloneGDIRefData(const wxGDIRefData *data) const;
 225
 226 private:
 227     bool CopyFromIconOrCursor(const wxGDIImage& rIcon);
 228
 229     bool                            m_bIsMono;
 230     DECLARE_DYNAMIC_CLASS(wxBitmap)
 231 }; // end of CLASS wxBitmap
 232
 233 // ----------------------------------------------------------------------------
 234 // wxMask: a mono bitmap used for drawing bitmaps transparently.
 235 // ----------------------------------------------------------------------------
 236
 237 class WXDLLIMPEXP_CORE wxMask : public wxObject
 238 {
 239 public:
 240     wxMask();
 241     wxMask( const wxMask& tocopy);
 242
 243     // Construct a mask from a bitmap and a colour indicating the transparent
 244     // area
 245     wxMask( const wxBitmap& rBitmap
 246            ,const wxColour& rColour
 247           );
 248
 249     // Construct a mask from a bitmap and a palette index indicating the
 250     // transparent area
 251     wxMask( const wxBitmap& rBitmap
 252            ,int             nPaletteIndex
 253           );
 254
 255     // Construct a mask from a mono bitmap (copies the bitmap).
 256     wxMask(const wxBitmap& rBitmap);
 257
 258     // construct a mask from the givne bitmap handle
 259     wxMask(WXHBITMAP hBmp)
 260       { m_hMaskBitmap = hBmp; }
 261
 262     virtual ~wxMask();
 263
 264     bool Create( const wxBitmap& bitmap
 265                 ,const wxColour& rColour
 266                );
 267     bool Create( const wxBitmap& rBitmap
 268                 ,int             nPaletteIndex
 269                );
 270     bool Create(const wxBitmap& rBitmap);
 271
 272     // Implementation
 273     WXHBITMAP GetMaskBitmap() const
 274       { return m_hMaskBitmap; }
 275     void SetMaskBitmap(WXHBITMAP hBmp)
 276       { m_hMaskBitmap = hBmp; }
 277
 278 protected:
 279     WXHBITMAP                       m_hMaskBitmap;
 280     DECLARE_DYNAMIC_CLASS(wxMask)
 281 }; // end of CLASS wxMask
 282
 283 // ----------------------------------------------------------------------------
 284 // wxBitmapHandler is a class which knows how to load/save bitmaps to/from file
 285 // ----------------------------------------------------------------------------
 286
 287 class WXDLLIMPEXP_CORE wxBitmapHandler : public wxGDIImageHandler
 288 {
 289 public:
 290     inline wxBitmapHandler()
 291       { m_lType = wxBITMAP_TYPE_INVALID; }
 292
 293     inline wxBitmapHandler( const wxString& rName
 294                     ,const wxString& rExt
 295                     ,wxBitmapType lType
 296                    )
 297                    : wxGDIImageHandler( rName
 298                                        ,rExt
 299                                        ,lType)
 300     {
 301     }
 302
 303     // keep wxBitmapHandler derived from wxGDIImageHandler compatible with the
 304     // old class which worked only with bitmaps
 305     virtual bool Create( wxBitmap* pBitmap
 306                         ,const void* pData
 307                         ,wxBitmapType lType
 308                         ,int       nWidth
 309                         ,int       nHeight
 310                         ,int       nDepth = 1
 311                        );
 312     virtual bool LoadFile( wxBitmap*       pBitmap
 313                           ,int             nId
 314                           ,wxBitmapType    lType
 315                           ,int             nDesiredWidth
 316                           ,int             nDesiredHeight
 317                          );
 318     virtual bool LoadFile( wxBitmap*       pBitmap
 319                           ,const wxString& rName
 320                           ,wxBitmapType    lType
 321                           ,int             nDesiredWidth
 322                           ,int             nDesiredHeight
 323                          );
 324     virtual bool SaveFile( wxBitmap*        pBitmap
 325                           ,const wxString&  rName
 326                           ,wxBitmapType     lType
 327                           ,const wxPalette* pPalette = NULL
 328                          ) const;
 329
 330     virtual bool Create( wxGDIImage* pImage
 331                         ,const void* pData
 332                         ,wxBitmapType lFlags
 333                         ,int         nWidth
 334                         ,int         nHeight
 335                         ,int         nDepth = 1
 336                        );
 337     virtual bool Load( wxGDIImage*     pImage
 338                       ,int             nId
 339                       ,wxBitmapType    lFlags
 340                       ,int             nDesiredWidth
 341                       ,int             nDesiredHeight
 342                      );
 343     virtual bool Save( const wxGDIImage* pImage
 344                       ,const wxString&   rName
 345                       ,wxBitmapType      lType
 346                      ) const;
 347 private:
 348     inline virtual bool Load( wxGDIImage*     WXUNUSED(pImage)
 349                              ,const wxString& WXUNUSED(rName)
 350                              ,WXHANDLE        WXUNUSED(hPs)
 351                              ,wxBitmapType    WXUNUSED(lFlags)
 352                              ,int             WXUNUSED(nDesiredWidth)
 353                              ,int             WXUNUSED(nDesiredHeight)
 354                             )
 355     { return false; }
 356     DECLARE_DYNAMIC_CLASS(wxBitmapHandler)
 357 }; // end of CLASS wxBitmapHandler
 358
 359 #endif
 360   // _WX_BITMAP_H_