src/palmos/bitmap.cpp

   1 ////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/palmos/bitmap.cpp
   3 // Purpose:     wxBitmap
   4 // Author:      William Osborne - minimal working wxPalmOS port
   5 // Modified by:
   6 // Created:     10/08/04
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) William Osborne
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #include "wx/bitmap.h"
  28
  29 #ifndef WX_PRECOMP
  30     #include <stdio.h>
  31
  32     #include "wx/list.h"
  33     #include "wx/utils.h"
  34     #include "wx/app.h"
  35     #include "wx/palette.h"
  36     #include "wx/dcmemory.h"
  37     #include "wx/icon.h"
  38     #include "wx/log.h"
  39 #endif
  40
  41 #if wxUSE_WXDIB
  42 #include "wx/palmos/dib.h"
  43 #endif
  44
  45 #include "wx/image.h"
  46 #include "wx/xpmdecod.h"
  47
  48 #ifdef wxHAVE_RAW_BITMAP
  49 #include "wx/rawbmp.h"
  50 #endif
  51
  52 // missing from mingw32 header
  53 #ifndef CLR_INVALID
  54     #define CLR_INVALID ((COLORREF)-1)
  55 #endif // no CLR_INVALID
  56
  57 // ----------------------------------------------------------------------------
  58 // Bitmap data
  59 // ----------------------------------------------------------------------------
  60
  61 class WXDLLEXPORT wxBitmapRefData : public wxGDIImageRefData
  62 {
  63 public:
  64     wxBitmapRefData();
  65     virtual ~wxBitmapRefData() { Free(); }
  66
  67     virtual void Free();
  68
  69     // set the mask object to use as the mask, we take ownership of it
  70     void SetMask(wxMask *mask)
  71     {
  72         delete m_bitmapMask;
  73         m_bitmapMask = mask;
  74     }
  75
  76     // return the mask
  77     wxMask *GetMask() const { return m_bitmapMask; }
  78
  79 public:
  80 #if wxUSE_PALETTE
  81     wxPalette     m_bitmapPalette;
  82 #endif // wxUSE_PALETTE
  83
  84 #ifdef __WXDEBUG__
  85     wxDC         *m_selectedInto;
  86 #endif // __WXDEBUG__
  87
  88 #if wxUSE_WXDIB
  89     wxDIB *m_dib;
  90 #endif
  91
  92     bool m_hasAlpha;
  93
  94     bool m_isDIB;
  95
  96 private:
  97     wxMask       *m_bitmapMask;
  98
  99     DECLARE_NO_COPY_CLASS(wxBitmapRefData)
 100 };
 101
 102 // ----------------------------------------------------------------------------
 103 // macros
 104 // ----------------------------------------------------------------------------
 105
 106 IMPLEMENT_DYNAMIC_CLASS(wxBitmap, wxGDIObject)
 107 IMPLEMENT_DYNAMIC_CLASS(wxMask, wxObject)
 108
 109 IMPLEMENT_DYNAMIC_CLASS(wxBitmapHandler, wxObject)
 110
 111 // ============================================================================
 112 // implementation
 113 // ============================================================================
 114
 115 // ----------------------------------------------------------------------------
 116 // helper functions
 117 // ----------------------------------------------------------------------------
 118
 119 #if !wxUSE_WXDIB
 120     #define NEVER_USE_DIB
 121 #else
 122     static inline bool wxShouldCreateDIB(int w, int h, int d, WXHDC hdc)
 123     {
 124         // here is the logic:
 125         //
 126         //  (a) if hdc is specified, the caller explicitly wants DDB
 127         //  (b) otherwise, create a DIB if depth >= 24 (we don't support 16bpp
 128         //      or less DIBs anyhow)
 129         //  (c) finally, create DIBs under Win9x even if the depth hasn't been
 130         //      explicitly specified but the current display depth is 24 or
 131         //      more and the image is "big", i.e. > 16Mb which is the
 132         //      theoretical limit for DDBs under Win9x
 133         //
 134         // consequences (all of which seem to make sense):
 135         //
 136         //  (i)     by default, DDBs are created (depth == -1 usually)
 137         //  (ii)    DIBs can be created by explicitly specifying the depth
 138         //  (iii)   using a DC always forces creating a DDB
 139         return !hdc &&
 140                 (d >= 24 ||
 141                     (d == -1 &&
 142                         wxDIB::GetLineSize(w, wxDisplayDepth())*h > 16*1024*1024));
 143     }
 144
 145     #define SOMETIMES_USE_DIB
 146 #endif // different DIB usage scenarious
 147
 148 // ----------------------------------------------------------------------------
 149 // wxBitmapRefData
 150 // ----------------------------------------------------------------------------
 151
 152 wxBitmapRefData::wxBitmapRefData()
 153 {
 154 #ifdef __WXDEBUG__
 155     m_selectedInto = NULL;
 156 #endif
 157     m_bitmapMask = NULL;
 158
 159     m_hBitmap = (WXHBITMAP) NULL;
 160 #if wxUSE_WXDIB
 161     m_dib = NULL;
 162 #endif
 163
 164     m_isDIB =
 165     m_hasAlpha = false;
 166 }
 167
 168 void wxBitmapRefData::Free()
 169 {
 170 }
 171
 172 // ----------------------------------------------------------------------------
 173 // wxBitmap creation
 174 // ----------------------------------------------------------------------------
 175
 176 // this function should be called from all wxBitmap ctors
 177 void wxBitmap::Init()
 178 {
 179 }
 180
 181 wxGDIImageRefData *wxBitmap::CreateData() const
 182 {
 183     return NULL;
 184 }
 185
 186 bool wxBitmap::CopyFromCursor(const wxCursor& cursor)
 187 {
 188     return false;
 189 }
 190
 191 bool wxBitmap::CopyFromIcon(const wxIcon& icon)
 192 {
 193     return false;
 194 }
 195
 196 #ifndef NEVER_USE_DIB
 197
 198 bool wxBitmap::CopyFromDIB(const wxDIB& dib)
 199 {
 200     return false:
 201 }
 202
 203 #endif // NEVER_USE_DIB
 204
 205 wxBitmap::~wxBitmap()
 206 {
 207 }
 208
 209 wxBitmap::wxBitmap(const char bits[], int width, int height, int depth)
 210 {
 211     Init();
 212 }
 213
 214 // Create from XPM data
 215 #if wxUSE_IMAGE && wxUSE_XPM
 216 bool wxBitmap::CreateFromXpm(const char **data)
 217 #else
 218 bool wxBitmap::CreateFromXpm(const char **WXUNUSED(data))
 219 #endif
 220 {
 221     return false;
 222 }
 223
 224 wxBitmap::wxBitmap(int w, int h, int d)
 225 {
 226 }
 227
 228 wxBitmap::wxBitmap(int w, int h, const wxDC& dc)
 229 {
 230 }
 231
 232 wxBitmap::wxBitmap(void *data, long type, int width, int height, int depth)
 233 {
 234 }
 235
 236 wxBitmap::wxBitmap(const wxString& filename, wxBitmapType type)
 237 {
 238 }
 239
 240 bool wxBitmap::Create(int width, int height, int depth)
 241 {
 242     return false;
 243 }
 244
 245 bool wxBitmap::Create(int width, int height, const wxDC& dc)
 246 {
 247     return false;
 248 }
 249
 250 bool wxBitmap::DoCreate(int w, int h, int d, WXHDC hdc)
 251 {
 252     return false;
 253 }
 254
 255 #if wxUSE_IMAGE
 256
 257 // ----------------------------------------------------------------------------
 258 // wxImage to/from conversions
 259 // ----------------------------------------------------------------------------
 260
 261 #if wxUSE_WXDIB
 262
 263 bool wxBitmap::CreateFromImage(const wxImage& image, int depth)
 264 {
 265     return false;
 266 }
 267
 268 bool wxBitmap::CreateFromImage(const wxImage& image, const wxDC& dc)
 269 {
 270     return false;
 271 }
 272
 273 bool wxBitmap::CreateFromImage(const wxImage& image, int depth, WXHDC hdc)
 274 {
 275     return false;
 276 }
 277
 278 wxImage wxBitmap::ConvertToImage() const
 279 {
 280     wxImage image;
 281     return image;
 282 }
 283
 284 #endif // wxUSE_WXDIB
 285
 286 #endif // wxUSE_IMAGE
 287
 288 // ----------------------------------------------------------------------------
 289 // loading and saving bitmaps
 290 // ----------------------------------------------------------------------------
 291
 292 bool wxBitmap::LoadFile(const wxString& filename, long type)
 293 {
 294     return false;
 295 }
 296
 297 bool wxBitmap::Create(void *data, long type, int width, int height, int depth)
 298 {
 299     return false;
 300 }
 301
 302 bool wxBitmap::SaveFile(const wxString& filename,
 303                         int type,
 304                         const wxPalette *palette)
 305 {
 306     return false;
 307 }
 308
 309 // ----------------------------------------------------------------------------
 310 // sub bitmap extraction
 311 // ----------------------------------------------------------------------------
 312
 313 wxBitmap wxBitmap::GetSubBitmap( const wxRect& rect) const
 314 {
 315     wxBitmap ret( 0, 0 );
 316     return ret;
 317 }
 318
 319 // ----------------------------------------------------------------------------
 320 // wxBitmap accessors
 321 // ----------------------------------------------------------------------------
 322
 323 #if wxUSE_PALETTE
 324 wxPalette* wxBitmap::GetPalette() const
 325 {
 326     return (wxPalette *) NULL;
 327 }
 328 #endif
 329
 330 wxMask *wxBitmap::GetMask() const
 331 {
 332     return (wxMask *) NULL;
 333 }
 334
 335 #ifdef __WXDEBUG__
 336
 337 wxDC *wxBitmap::GetSelectedInto() const
 338 {
 339     return (wxDC *) NULL;
 340 }
 341
 342 #endif
 343
 344 void wxBitmap::UseAlpha()
 345 {
 346 }
 347
 348 bool wxBitmap::HasAlpha() const
 349 {
 350     return false;
 351 }
 352
 353 // ----------------------------------------------------------------------------
 354 // wxBitmap setters
 355 // ----------------------------------------------------------------------------
 356
 357 #ifdef __WXDEBUG__
 358
 359 void wxBitmap::SetSelectedInto(wxDC *dc)
 360 {
 361 }
 362
 363 #endif
 364
 365 #if wxUSE_PALETTE
 366
 367 void wxBitmap::SetPalette(const wxPalette& palette)
 368 {
 369 }
 370
 371 #endif // wxUSE_PALETTE
 372
 373 void wxBitmap::SetMask(wxMask *mask)
 374 {
 375 }
 376
 377 // ----------------------------------------------------------------------------
 378 // raw bitmap access support
 379 // ----------------------------------------------------------------------------
 380
 381 #ifdef wxHAVE_RAW_BITMAP
 382 void *wxBitmap::GetRawData(wxPixelDataBase& data, int bpp)
 383 {
 384     return NULL;
 385 }
 386
 387 void wxBitmap::UngetRawData(wxPixelDataBase& dataBase)
 388 {
 389     return;
 390 }
 391 #endif // #ifdef wxHAVE_RAW_BITMAP
 392
 393 // ----------------------------------------------------------------------------
 394 // wxMask
 395 // ----------------------------------------------------------------------------
 396
 397 wxMask::wxMask()
 398 {
 399     m_maskBitmap = 0;
 400 }
 401
 402 // Construct a mask from a bitmap and a colour indicating
 403 // the transparent area
 404 wxMask::wxMask(const wxBitmap& bitmap, const wxColour& colour)
 405 {
 406 }
 407
 408 // Construct a mask from a bitmap and a palette index indicating
 409 // the transparent area
 410 wxMask::wxMask(const wxBitmap& bitmap, int paletteIndex)
 411 {
 412 }
 413
 414 // Construct a mask from a mono bitmap (copies the bitmap).
 415 wxMask::wxMask(const wxBitmap& bitmap)
 416 {
 417 }
 418
 419 wxMask::~wxMask()
 420 {
 421 }
 422
 423 // Create a mask from a mono bitmap (copies the bitmap).
 424 bool wxMask::Create(const wxBitmap& bitmap)
 425 {
 426     return false;
 427 }
 428
 429 // Create a mask from a bitmap and a palette index indicating
 430 // the transparent area
 431 bool wxMask::Create(const wxBitmap& bitmap, int paletteIndex)
 432 {
 433     return false;
 434 }
 435
 436 // Create a mask from a bitmap and a colour indicating
 437 // the transparent area
 438 bool wxMask::Create(const wxBitmap& bitmap, const wxColour& colour)
 439 {
 440     return false;
 441 }
 442
 443 // ----------------------------------------------------------------------------
 444 // wxBitmapHandler
 445 // ----------------------------------------------------------------------------
 446
 447 bool wxBitmapHandler::Create(wxGDIImage *image,
 448                              void *data,
 449                              long flags,
 450                              int width, int height, int depth)
 451 {
 452     return false;
 453 }
 454
 455 bool wxBitmapHandler::Load(wxGDIImage *image,
 456                            const wxString& name,
 457                            long flags,
 458                            int width, int height)
 459 {
 460     return false;
 461 }
 462
 463 bool wxBitmapHandler::Save(wxGDIImage *image,
 464                            const wxString& name,
 465                            int type)
 466 {
 467     return false;
 468 }
 469
 470 bool wxBitmapHandler::Create(wxBitmap *WXUNUSED(bitmap),
 471                              void *WXUNUSED(data),
 472                              long WXUNUSED(type),
 473                              int WXUNUSED(width),
 474                              int WXUNUSED(height),
 475                              int WXUNUSED(depth))
 476 {
 477     return false;
 478 }
 479
 480 bool wxBitmapHandler::LoadFile(wxBitmap *WXUNUSED(bitmap),
 481                                const wxString& WXUNUSED(name),
 482                                long WXUNUSED(type),
 483                                int WXUNUSED(desiredWidth),
 484                                int WXUNUSED(desiredHeight))
 485 {
 486     return false;
 487 }
 488
 489 bool wxBitmapHandler::SaveFile(wxBitmap *WXUNUSED(bitmap),
 490                                const wxString& WXUNUSED(name),
 491                                int WXUNUSED(type),
 492                                const wxPalette *WXUNUSED(palette))
 493 {
 494     return false;
 495 }