src/dfb/bitmap.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/dfb/bitmap.cpp
   3 // Purpose:     wxBitmap implementation
   4 // Author:      Vaclav Slavik
   5 // Created:     2006-08-04
   6 // RCS-ID:      $Id$
   7 // Copyright:   (c) 2006 REA Elektronik GmbH
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 // For compilers that support precompilation, includes "wx.h".
  12 #include "wx/wxprec.h"
  13
  14 #ifdef __BORLANDC__
  15     #pragma hdrstop
  16 #endif
  17
  18 #ifndef WX_PRECOMP
  19     #include "wx/app.h"
  20     #include "wx/log.h"
  21 #endif
  22
  23 #include "wx/bitmap.h"
  24 #include "wx/colour.h"
  25 #include "wx/image.h"
  26
  27 #warning "move this to common"
  28 #include "wx/xpmdecod.h"
  29
  30 #include "wx/dfb/private.h"
  31
  32 //-----------------------------------------------------------------------------
  33 // helpers
  34 //-----------------------------------------------------------------------------
  35
  36 // Convert wxColour into it's quantized value in lower-precision
  37 // pixel format (needed for masking by colour).
  38 static wxColour wxQuantizeColour(const wxColour& clr, const wxBitmap& bmp)
  39 {
  40 #if 0
  41     pixel_format_t *pf = bmp.GetMGLbitmap_t()->pf;
  42
  43     if ( pf->redAdjust == 0 && pf->greenAdjust == 0 && pf->blueAdjust == 0 )
  44         return clr;
  45     else
  46         return wxColour((unsigned char)((clr.Red() >> pf->redAdjust) << pf->redAdjust),
  47                         (unsigned char)((clr.Green() >> pf->greenAdjust) << pf->greenAdjust),
  48                         (unsigned char)((clr.Blue() >> pf->blueAdjust) << pf->blueAdjust));
  49 #endif
  50 }
  51
  52
  53 //-----------------------------------------------------------------------------
  54 // wxMask
  55 //-----------------------------------------------------------------------------
  56
  57 IMPLEMENT_DYNAMIC_CLASS(wxMask, wxObject)
  58
  59 wxMask::wxMask() : m_bitmap(NULL)
  60 {
  61 }
  62
  63 wxMask::wxMask(const wxBitmap& bitmap)
  64     : m_bitmap(NULL)
  65 {
  66     Create(bitmap);
  67 }
  68
  69 wxMask::wxMask(const wxBitmap& bitmap, const wxColour& colour)
  70     : m_bitmap(NULL)
  71 {
  72     Create(bitmap, colour);
  73 }
  74
  75 #if wxUSE_PALETTE
  76 wxMask::wxMask(const wxBitmap& bitmap, int paletteIndex)
  77     : m_bitmap(NULL)
  78 {
  79     Create(bitmap, paletteIndex);
  80 }
  81 #endif // wxUSE_PALETTE
  82
  83 wxMask::wxMask(const wxMask& mask)
  84 {
  85     m_bitmap = mask.m_bitmap ? new wxBitmap(*mask.m_bitmap) : NULL;
  86 }
  87
  88 wxMask::~wxMask()
  89 {
  90     delete m_bitmap;
  91 }
  92
  93 #warning "move this to common code"
  94 bool wxMask::Create(const wxBitmap& bitmap, const wxColour& colour)
  95 {
  96     delete m_bitmap;
  97     m_bitmap = NULL;
  98
  99     wxColour clr(wxQuantizeColour(colour, bitmap));
 100
 101     wxImage imgSrc(bitmap.ConvertToImage());
 102     imgSrc.SetMask(false);
 103     wxImage image(imgSrc.ConvertToMono(clr.Red(), clr.Green(), clr.Blue()));
 104     if ( !image.Ok() )
 105         return false;
 106
 107     m_bitmap = new wxBitmap(image, 1);
 108
 109     return m_bitmap->Ok();
 110 }
 111
 112 #if wxUSE_PALETTE
 113 bool wxMask::Create(const wxBitmap& bitmap, int paletteIndex)
 114 {
 115     unsigned char r,g,b;
 116     wxPalette *pal = bitmap.GetPalette();
 117
 118     wxCHECK_MSG( pal, false, wxT("Cannot create mask from bitmap without palette") );
 119
 120     pal->GetRGB(paletteIndex, &r, &g, &b);
 121
 122     return Create(bitmap, wxColour(r, g, b));
 123 }
 124 #endif // wxUSE_PALETTE
 125
 126 bool wxMask::Create(const wxBitmap& bitmap)
 127 {
 128     delete m_bitmap;
 129     m_bitmap = NULL;
 130
 131     wxCHECK_MSG( bitmap.Ok(), false, wxT("Invalid bitmap") );
 132     wxCHECK_MSG( bitmap.GetDepth() == 1, false, wxT("Cannot create mask from colour bitmap") );
 133
 134     m_bitmap = new wxBitmap(bitmap);
 135     return true;
 136 }
 137
 138 const wxBitmap& wxMask::GetBitmap() const
 139 {
 140     return m_bitmap ? *m_bitmap : wxNullBitmap;
 141 }
 142
 143
 144 //-----------------------------------------------------------------------------
 145 // wxBitmapRefData
 146 //-----------------------------------------------------------------------------
 147
 148 class wxBitmapRefData: public wxObjectRefData
 149 {
 150 public:
 151     wxBitmapRefData()
 152     {
 153         m_mask = NULL;
 154 #if wxUSE_PALETTE
 155         m_palette = NULL;
 156 #endif
 157     }
 158
 159     wxBitmapRefData(const wxBitmapRefData& data)
 160     {
 161         m_surface = wxDfbCloneSurface(data.m_surface,
 162                                       wxDfbCloneSurface_NoPixels);
 163         m_mask = data.m_mask ? new wxMask(*data.m_mask) : NULL;
 164 #if wxUSE_PALETTE
 165         m_palette = data.m_palette ? new wxPalette(*data.m_palette) : NULL;
 166 #endif
 167     }
 168
 169     ~wxBitmapRefData()
 170     {
 171         delete m_mask;
 172 #if wxUSE_PALETTE
 173         delete m_palette;
 174 #endif
 175     }
 176
 177     IDirectFBSurfacePtr m_surface;
 178     wxMask             *m_mask;
 179 #if wxUSE_PALETTE
 180     wxPalette          *m_palette;
 181 #endif
 182 };
 183
 184 #define M_BITMAP ((wxBitmapRefData *)m_refData)
 185
 186 //-----------------------------------------------------------------------------
 187 // wxBitmap
 188 //-----------------------------------------------------------------------------
 189
 190 IMPLEMENT_ABSTRACT_CLASS(wxBitmapHandler, wxObject)
 191 IMPLEMENT_DYNAMIC_CLASS(wxBitmap, wxBitmapBase)
 192
 193 wxBitmap::wxBitmap(int width, int height, int depth)
 194 {
 195     Create(width, height, depth);
 196 }
 197
 198 bool wxBitmap::Create(int width, int height, int depth)
 199 {
 200     UnRef();
 201
 202     wxCHECK_MSG( width > 0 && height > 0, false, wxT("invalid bitmap size") );
 203
 204     DFBSurfaceDescription desc;
 205     desc.flags = (DFBSurfaceDescriptionFlags)(
 206                         DSDESC_CAPS | DSDESC_WIDTH | DSDESC_HEIGHT);
 207     desc.caps = DSCAPS_NONE;
 208     desc.width = width;
 209     desc.height = height;
 210
 211     IDirectFBSurfacePtr surface;
 212     IDirectFBPtr dfb(wxTheApp->GetDirectFBInterface());
 213     if ( !DFB_CALL( dfb->CreateSurface(dfb, &desc, &surface) ) )
 214         return false;
 215
 216     m_refData = new wxBitmapRefData();
 217     M_BITMAP->m_surface = surface;
 218
 219     return true;
 220 }
 221
 222 #warning "FIXME: move this to common code"
 223 bool wxBitmap::CreateFromXpm(const char **bits)
 224 {
 225     wxCHECK_MSG( bits != NULL, false, wxT("invalid bitmap data") );
 226
 227 #if wxUSE_IMAGE && wxUSE_XPM
 228     wxXPMDecoder decoder;
 229     wxImage img = decoder.ReadData(bits);
 230     wxCHECK_MSG( img.Ok(), false, wxT("invalid bitmap data") );
 231
 232     *this = wxBitmap(img);
 233
 234     return true;
 235 #else
 236     wxFAIL_MSG( _T("creating bitmaps from XPMs not supported") );
 237     return false;
 238 #endif // wxUSE_IMAGE && wxUSE_XPM
 239 }
 240
 241 #if wxUSE_IMAGE
 242 wxBitmap::wxBitmap(const wxImage& image, int depth)
 243 {
 244     wxCHECK_RET( image.Ok(), wxT("invalid image") );
 245 }
 246
 247 wxImage wxBitmap::ConvertToImage() const
 248 {
 249     wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") );
 250
 251     return wxNullImage; // FIXME
 252 }
 253 #endif // wxUSE_IMAGE
 254
 255 wxBitmap::wxBitmap(const wxString &filename, wxBitmapType type)
 256 {
 257     LoadFile(filename, type);
 258 }
 259
 260 wxBitmap::wxBitmap(const char bits[], int width, int height, int depth)
 261 {
 262     wxCHECK_RET( depth == 1, wxT("can only create mono bitmap from XBM data") );
 263 }
 264
 265 bool wxBitmap::Ok() const
 266 {
 267     return (m_refData != NULL && M_BITMAP->m_surface);
 268 }
 269
 270 bool wxBitmap::operator==(const wxBitmap& bmp) const
 271 {
 272     // FIXME: is this the right way to compare bitmaps?
 273     return (m_refData == bmp.m_refData);
 274 }
 275
 276 int wxBitmap::GetHeight() const
 277 {
 278     wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
 279
 280     int h = -1;
 281     DFB_CALL( M_BITMAP->m_surface->GetSize(M_BITMAP->m_surface, NULL, &h) );
 282     return h;
 283 }
 284
 285 int wxBitmap::GetWidth() const
 286 {
 287     wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
 288
 289     int w = -1;
 290     DFB_CALL( M_BITMAP->m_surface->GetSize(M_BITMAP->m_surface, &w, NULL) );
 291     return w;
 292 }
 293
 294 int wxBitmap::GetDepth() const
 295 {
 296     wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
 297
 298     return wxDfbGetSurfaceDepth(M_BITMAP->m_surface);
 299 }
 300
 301 wxMask *wxBitmap::GetMask() const
 302 {
 303     wxCHECK_MSG( Ok(), NULL, wxT("invalid bitmap") );
 304
 305     return M_BITMAP->m_mask;
 306 }
 307
 308 void wxBitmap::SetMask(wxMask *mask)
 309 {
 310     wxCHECK_RET( Ok(), wxT("invalid bitmap") );
 311
 312     delete M_BITMAP->m_mask;
 313     M_BITMAP->m_mask = mask;
 314 }
 315
 316 bool wxBitmap::CopyFromIcon(const wxIcon& icon)
 317 {
 318     *this = *((wxBitmap*)(&icon));
 319     return true;
 320 }
 321
 322 wxBitmap wxBitmap::GetSubBitmap(const wxRect& rect) const
 323 {
 324     wxCHECK_MSG( Ok() &&
 325                  rect.x >= 0 && rect.y >= 0 &&
 326                  rect.x+rect.width <= GetWidth() &&
 327                  rect.y+rect.height <= GetHeight(),
 328                  wxNullBitmap,
 329                  wxT("invalid bitmap or bitmap region") );
 330
 331 }
 332
 333 #warning "to common code"
 334 bool wxBitmap::LoadFile(const wxString &name, wxBitmapType type)
 335 {
 336     UnRef();
 337
 338     wxBitmapHandler *handler = FindHandler(type);
 339
 340     if ( handler == NULL )
 341     {
 342         wxImage image;
 343         if ( !image.LoadFile(name, type) || !image.Ok() )
 344         {
 345             wxLogError("no bitmap handler for type %d defined.", type);
 346             return false;
 347         }
 348         else
 349         {
 350             *this = wxBitmap(image);
 351             return true;
 352         }
 353     }
 354
 355     m_refData = new wxBitmapRefData();
 356
 357     return handler->LoadFile(this, name, type, -1, -1);
 358 }
 359
 360 #warning "to common code"
 361 bool wxBitmap::SaveFile(const wxString& filename, wxBitmapType type, const wxPalette *palette) const
 362 {
 363     wxCHECK_MSG( Ok(), false, wxT("invalid bitmap") );
 364
 365     wxBitmapHandler *handler = FindHandler(type);
 366
 367     if ( handler == NULL )
 368     {
 369         wxImage image = ConvertToImage();
 370 #if wxUSE_PALETTE
 371         if ( palette )
 372             image.SetPalette(*palette);
 373 #endif // wxUSE_PALETTE
 374
 375         if ( image.Ok() )
 376             return image.SaveFile(filename, type);
 377         else
 378         {
 379             wxLogError("no bitmap handler for type %d defined.", type);
 380             return false;
 381         }
 382     }
 383
 384     return handler->SaveFile(this, filename, type, palette);
 385 }
 386
 387 #if wxUSE_PALETTE
 388 wxPalette *wxBitmap::GetPalette() const
 389 {
 390     wxCHECK_MSG( Ok(), NULL, wxT("invalid bitmap") );
 391
 392     return M_BITMAP->m_palette;
 393 }
 394
 395 void wxBitmap::SetPalette(const wxPalette& palette)
 396 {
 397     wxCHECK_RET( Ok(), wxT("invalid bitmap") );
 398     wxCHECK_RET( GetDepth() > 1 && GetDepth() <= 8, wxT("cannot set palette for bitmap of this depth") );
 399
 400     delete M_BITMAP->m_palette;
 401     M_BITMAP->m_palette = NULL;
 402
 403     if ( !palette.Ok() ) return;
 404
 405     M_BITMAP->m_palette = new wxPalette(palette);
 406 }
 407 #endif // wxUSE_PALETTE
 408
 409 void wxBitmap::SetHeight(int height)
 410 {
 411     AllocExclusive();
 412 #warning "todo"
 413 }
 414
 415 void wxBitmap::SetWidth(int width)
 416 {
 417     AllocExclusive();
 418 #warning "todo"
 419 }
 420
 421 void wxBitmap::SetDepth(int depth)
 422 {
 423     AllocExclusive();
 424 #warning "todo"
 425 }
 426
 427 IDirectFBSurfacePtr wxBitmap::GetDirectFBSurface() const
 428 {
 429     wxCHECK_MSG( Ok(), NULL, wxT("invalid bitmap") );
 430
 431     return M_BITMAP->m_surface;
 432 }
 433
 434 wxObjectRefData *wxBitmap::CreateRefData() const
 435 {
 436     return new wxBitmapRefData;
 437 }
 438
 439 wxObjectRefData *wxBitmap::CloneRefData(const wxObjectRefData *data) const
 440 {
 441     return new wxBitmapRefData(*(wxBitmapRefData *)data);
 442 }
 443
 444
 445 /*static*/
 446 void wxBitmap::InitStandardHandlers()
 447 {
 448     // not wxBitmap handlers, we rely on wxImage
 449 }