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 #ifdef __GNUG__
  16     #pragma interface "bitmap.h"
  17 #endif
  18
  19 #include "wx/os2/private.h"
  20 #include "wx/os2/gdiimage.h"
  21 #include "wx/gdicmn.h"
  22 #include "wx/palette.h"
  23
  24 class WXDLLEXPORT wxDC;
  25 class WXDLLEXPORT wxControl;
  26 class WXDLLEXPORT wxBitmap;
  27 class WXDLLEXPORT wxBitmapHandler;
  28 class WXDLLEXPORT wxIcon;
  29 class WXDLLEXPORT wxMask;
  30 class WXDLLEXPORT wxCursor;
  31 class WXDLLEXPORT wxControl;
  32 class WXDLLEXPORT wxImage;
  33
  34 // ----------------------------------------------------------------------------
  35 // Bitmap data
  36 //
  37 // NB: this class is private, but declared here to make it possible inline
  38 //     wxBitmap functions accessing it
  39 // ----------------------------------------------------------------------------
  40
  41 class WXDLLEXPORT wxBitmapRefData : public wxGDIImageRefData
  42 {
  43 public:
  44     wxBitmapRefData();
  45     virtual ~wxBitmapRefData() { Free(); }
  46
  47     virtual void Free();
  48
  49 public:
  50     int                             m_nNumColors;
  51     wxPalette                       m_vBitmapPalette;
  52     int                             m_nQuality;
  53
  54     // OS2-specific
  55     // ------------
  56
  57     wxDC*                           m_pSelectedInto;
  58
  59     //
  60     // Optional mask for transparent drawing
  61     //
  62     wxMask*                         m_pBitmapMask;
  63 }; // end of CLASS wxBitmapRefData
  64
  65 // ----------------------------------------------------------------------------
  66 // wxBitmap: a mono or colour bitmap
  67 // ----------------------------------------------------------------------------
  68
  69 class WXDLLEXPORT wxBitmap : public wxGDIImage
  70 {
  71 public:
  72     // default ctor creates an invalid bitmap, you must Create() it later
  73     wxBitmap() { Init(); }
  74
  75     // Copy constructors
  76     inline wxBitmap(const wxBitmap& rBitmap)
  77       { Init(); Ref(rBitmap); SetHandle(rBitmap.GetHandle()); }
  78
  79     // Initialize with raw data
  80     wxBitmap( const char bits[]
  81              ,int        nWidth
  82              ,int        nHeight
  83              ,int        nDepth = 1
  84             );
  85
  86     // Initialize with XPM data
  87     wxBitmap(const char** ppData) { CreateFromXpm(ppData); }
  88     wxBitmap(char** ppData) { CreateFromXpm((const char**)ppData); }
  89
  90     // Load a resource
  91     wxBitmap( int             nId
  92              ,long            lType = wxBITMAP_TYPE_BMP_RESOURCE
  93             );
  94
  95     // For compatiability with other ports, under OS/2 does same as default ctor
  96     inline wxBitmap( const wxString& WXUNUSED(rFilename)
  97                     ,long            WXUNUSED(lType)
  98                    )
  99     { Init(); }
 100     // New constructor for generalised creation from data
 101     wxBitmap( void* pData
 102              ,long  lType
 103              ,int   nWidth
 104              ,int   nHeight
 105              ,int   nDepth = 1
 106             );
 107
 108     // If depth is omitted, will create a bitmap compatible with the display
 109     wxBitmap( int nWidth
 110              ,int nHeight
 111              ,int nDepth = -1
 112             );
 113
 114     wxBitmap( const wxImage& image, int depth = -1 )
 115                          { (void)CreateFromImage(image, depth); }
 116
 117     // we must have this, otherwise icons are silently copied into bitmaps using
 118     // the copy ctor but the resulting bitmap is invalid!
 119     inline wxBitmap(const wxIcon& rIcon)
 120       { Init(); CopyFromIcon(rIcon); }
 121
 122     wxBitmap& operator=(const wxBitmap& rBitmap)
 123     {
 124         if ( m_refData != rBitmap.m_refData )
 125             Ref(rBitmap);
 126         return(*this);
 127     }
 128
 129     wxBitmap& operator=(const wxIcon& rIcon)
 130     {
 131         (void)CopyFromIcon(rIcon);
 132
 133         return(*this);
 134     }
 135
 136     wxBitmap& operator=(const wxCursor& rCursor)
 137     {
 138         (void)CopyFromCursor(rCursor);
 139         return (*this);
 140     }
 141
 142     virtual ~wxBitmap();
 143
 144     wxImage ConvertToImage() const;
 145
 146     // get the given part of bitmap
 147     wxBitmap GetSubBitmap(const wxRect& rRect) const;
 148
 149     // copies the contents and mask of the given (colour) icon to the bitmap
 150     bool CopyFromIcon(const wxIcon& rIcon);
 151
 152     // copies the contents and mask of the given cursor to the bitmap
 153     bool CopyFromCursor(const wxCursor& rCursor);
 154
 155     virtual bool Create( int nWidth
 156                         ,int nHeight
 157                         ,int nDepth = -1
 158                        );
 159     virtual bool Create( void* pData
 160                         ,long  lType
 161                         ,int   nWidth
 162                         ,int   nHeight
 163                         ,int   nDepth = 1
 164                        );
 165     virtual bool LoadFile( int             nId
 166                           ,long            lType = wxBITMAP_TYPE_BMP_RESOURCE
 167                          );
 168     virtual bool SaveFile( const wxString&  rName
 169                           ,int              lType
 170                           ,const wxPalette* pCmap = NULL
 171                          );
 172
 173     inline wxBitmapRefData* GetBitmapData() const
 174       { return (wxBitmapRefData *)m_refData; }
 175
 176     inline int GetQuality() const
 177       { return (GetBitmapData() ? GetBitmapData()->m_nQuality : 0); }
 178
 179     void SetQuality(int nQ);
 180
 181     wxPalette* GetPalette() const
 182       { return (GetBitmapData() ? (& GetBitmapData()->m_vBitmapPalette) : (wxPalette*) NULL); }
 183
 184     void       SetPalette(const wxPalette& rPalette);
 185
 186     inline wxMask* GetMask() const
 187       { return (GetBitmapData() ? GetBitmapData()->m_pBitmapMask : (wxMask*) NULL); }
 188
 189     void SetMask(wxMask* pMask) ;
 190
 191     inline bool operator==(const wxBitmap& rBitmap) const
 192       { return m_refData == rBitmap.m_refData; }
 193
 194     inline bool operator!=(const wxBitmap& rBitmap) const
 195       { return m_refData != rBitmap.m_refData; }
 196
 197     // Implementation
 198 public:
 199     inline void SetHBITMAP(WXHBITMAP hBmp)
 200       { SetHandle((WXHANDLE)hBmp); }
 201
 202     inline WXHBITMAP GetHBITMAP() const
 203       { return (WXHBITMAP)GetHandle(); }
 204
 205     inline void  SetSelectedInto(wxDC* pDc)
 206       { if (GetBitmapData()) GetBitmapData()->m_pSelectedInto = pDc; }
 207
 208     inline wxDC* GetSelectedInto() const
 209       { return (GetBitmapData() ? GetBitmapData()->m_pSelectedInto : (wxDC*) NULL); }
 210
 211     inline bool IsMono(void) const { return m_bIsMono; }
 212
 213     // An OS/2 version that probably doesn't do anything like the msw version
 214     wxBitmap GetBitmapForDC(wxDC& rDc) const;
 215
 216 protected:
 217     // common part of all ctors
 218     void Init();
 219
 220     inline virtual wxGDIImageRefData* CreateData() const
 221         { return new wxBitmapRefData; }
 222
 223     // creates the bitmap from XPM data, supposed to be called from ctor
 224     bool CreateFromXpm(const char** ppData);
 225     bool CreateFromImage(const wxImage& image, int depth);
 226
 227 private:
 228     bool CopyFromIconOrCursor(const wxGDIImage& rIcon);
 229
 230     bool                            m_bIsMono;
 231     DECLARE_DYNAMIC_CLASS(wxBitmap)
 232 }; // end of CLASS wxBitmap
 233
 234 // ----------------------------------------------------------------------------
 235 // wxMask: a mono bitmap used for drawing bitmaps transparently.
 236 // ----------------------------------------------------------------------------
 237
 238 class WXDLLEXPORT wxMask : public wxObject
 239 {
 240 public:
 241     wxMask();
 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 WXDLLEXPORT 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                     ,long            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                         ,void*     pData
 307                         ,long      lFlags
 308                         ,int       nWidth
 309                         ,int       nHeight
 310                         ,int       nDepth = 1
 311                        );
 312     virtual bool LoadFile( wxBitmap*       pBitmap
 313                           ,int             nId
 314                           ,long            lFlags
 315                           ,int             nDesiredWidth
 316                           ,int             nDesiredHeight
 317                          );
 318     virtual bool SaveFile( wxBitmap*        pBitmap
 319                           ,const wxString&  rName
 320                           ,int              lType
 321                           ,const wxPalette* pPalette = NULL
 322                          );
 323
 324     virtual bool Create( wxGDIImage* pImage
 325                         ,void*       pData
 326                         ,long        lFlags
 327                         ,int         nWidth
 328                         ,int         nHeight
 329                         ,int         nDepth = 1
 330                        );
 331     virtual bool Load( wxGDIImage*     pImage
 332                       ,int             nId
 333                       ,long            lFlags
 334                       ,int             nDesiredWidth
 335                       ,int             nDesiredHeight
 336                      );
 337     virtual bool Save( wxGDIImage*     pImage
 338                       ,const wxString& rName
 339                       ,int             lType
 340                      );
 341 private:
 342     inline virtual bool Load( wxGDIImage*     pImage
 343                              ,const wxString& rName
 344                              ,HPS             hPs
 345                              ,long            lFlags
 346                              ,int             nDesiredWidth
 347                              ,int             nDesiredHeight
 348                             )
 349     { return FALSE; }
 350     DECLARE_DYNAMIC_CLASS(wxBitmapHandler)
 351 }; // end of CLASS wxBitmapHandler
 352
 353 #endif
 354   // _WX_BITMAP_H_