| 1 | //////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: bitmap.cpp |
| 3 | // Purpose: wxBitmap |
| 4 | // Author: Julian Smart |
| 5 | // Modified by: |
| 6 | // Created: 04/01/98 |
| 7 | // RCS-ID: $Id$ |
| 8 | // Copyright: (c) Julian Smart |
| 9 | // Licence: wxWindows licence |
| 10 | ///////////////////////////////////////////////////////////////////////////// |
| 11 | |
| 12 | // ============================================================================ |
| 13 | // declarations |
| 14 | // ============================================================================ |
| 15 | |
| 16 | // ---------------------------------------------------------------------------- |
| 17 | // headers |
| 18 | // ---------------------------------------------------------------------------- |
| 19 | |
| 20 | #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) |
| 21 | #pragma implementation "bitmap.h" |
| 22 | #endif |
| 23 | |
| 24 | // For compilers that support precompilation, includes "wx.h". |
| 25 | #include "wx/wxprec.h" |
| 26 | |
| 27 | #ifdef __BORLANDC__ |
| 28 | #pragma hdrstop |
| 29 | #endif |
| 30 | |
| 31 | #ifndef WX_PRECOMP |
| 32 | #include <stdio.h> |
| 33 | |
| 34 | #include "wx/list.h" |
| 35 | #include "wx/utils.h" |
| 36 | #include "wx/app.h" |
| 37 | #include "wx/palette.h" |
| 38 | #include "wx/dcmemory.h" |
| 39 | #include "wx/bitmap.h" |
| 40 | #include "wx/icon.h" |
| 41 | #endif |
| 42 | |
| 43 | #include "wx/msw/private.h" |
| 44 | #include "wx/log.h" |
| 45 | |
| 46 | #if wxUSE_WXDIB |
| 47 | #include "wx/msw/dib.h" |
| 48 | #endif |
| 49 | |
| 50 | #include "wx/image.h" |
| 51 | #include "wx/xpmdecod.h" |
| 52 | |
| 53 | #ifdef wxHAVE_RAW_BITMAP |
| 54 | #include "wx/rawbmp.h" |
| 55 | #endif |
| 56 | |
| 57 | // missing from mingw32 header |
| 58 | #ifndef CLR_INVALID |
| 59 | #define CLR_INVALID ((COLORREF)-1) |
| 60 | #endif // no CLR_INVALID |
| 61 | |
| 62 | // ---------------------------------------------------------------------------- |
| 63 | // Bitmap data |
| 64 | // ---------------------------------------------------------------------------- |
| 65 | |
| 66 | class WXDLLEXPORT wxBitmapRefData : public wxGDIImageRefData |
| 67 | { |
| 68 | public: |
| 69 | wxBitmapRefData(); |
| 70 | wxBitmapRefData(const wxBitmapRefData& data); |
| 71 | virtual ~wxBitmapRefData() { Free(); } |
| 72 | |
| 73 | virtual void Free(); |
| 74 | |
| 75 | // set the mask object to use as the mask, we take ownership of it |
| 76 | void SetMask(wxMask *mask) |
| 77 | { |
| 78 | delete m_bitmapMask; |
| 79 | m_bitmapMask = mask; |
| 80 | } |
| 81 | |
| 82 | // set the HBITMAP to use as the mask |
| 83 | void SetMask(HBITMAP hbmpMask) |
| 84 | { |
| 85 | SetMask(new wxMask((WXHBITMAP)hbmpMask)); |
| 86 | } |
| 87 | |
| 88 | // return the mask |
| 89 | wxMask *GetMask() const { return m_bitmapMask; } |
| 90 | |
| 91 | public: |
| 92 | #if wxUSE_PALETTE |
| 93 | wxPalette m_bitmapPalette; |
| 94 | #endif // wxUSE_PALETTE |
| 95 | |
| 96 | // MSW-specific |
| 97 | // ------------ |
| 98 | |
| 99 | #ifdef __WXDEBUG__ |
| 100 | // this field is solely for error checking: we detect selecting a bitmap |
| 101 | // into more than one DC at once or deleting a bitmap still selected into a |
| 102 | // DC (both are serious programming errors under Windows) |
| 103 | wxDC *m_selectedInto; |
| 104 | #endif // __WXDEBUG__ |
| 105 | |
| 106 | #if wxUSE_WXDIB |
| 107 | // when GetRawData() is called for a DDB we need to convert it to a DIB |
| 108 | // first to be able to provide direct access to it and we cache that DIB |
| 109 | // here and convert it back to DDB when UngetRawData() is called |
| 110 | wxDIB *m_dib; |
| 111 | #endif |
| 112 | |
| 113 | // true if we have alpha transparency info and can be drawn using |
| 114 | // AlphaBlend() |
| 115 | bool m_hasAlpha; |
| 116 | |
| 117 | // true if our HBITMAP is a DIB section, false if it is a DDB |
| 118 | bool m_isDIB; |
| 119 | |
| 120 | private: |
| 121 | // optional mask for transparent drawing |
| 122 | wxMask *m_bitmapMask; |
| 123 | |
| 124 | |
| 125 | // not implemented |
| 126 | wxBitmapRefData& operator=(const wxBitmapRefData&); |
| 127 | }; |
| 128 | |
| 129 | // ---------------------------------------------------------------------------- |
| 130 | // macros |
| 131 | // ---------------------------------------------------------------------------- |
| 132 | |
| 133 | IMPLEMENT_DYNAMIC_CLASS(wxBitmap, wxGDIObject) |
| 134 | IMPLEMENT_DYNAMIC_CLASS(wxMask, wxObject) |
| 135 | |
| 136 | IMPLEMENT_DYNAMIC_CLASS(wxBitmapHandler, wxObject) |
| 137 | |
| 138 | // ============================================================================ |
| 139 | // implementation |
| 140 | // ============================================================================ |
| 141 | |
| 142 | // ---------------------------------------------------------------------------- |
| 143 | // helper functions |
| 144 | // ---------------------------------------------------------------------------- |
| 145 | |
| 146 | // decide whether we should create a DIB or a DDB for the given parameters |
| 147 | // |
| 148 | // NB: we always use DIBs under Windows CE as this is much simpler (even if |
| 149 | // also less efficient...) and we obviously can't use them if there is no |
| 150 | // DIB support compiled in at all |
| 151 | #ifdef __WXWINCE__ |
| 152 | static inline bool wxShouldCreateDIB(int, int, int, WXHDC) { return true; } |
| 153 | |
| 154 | #define ALWAYS_USE_DIB |
| 155 | #elif !wxUSE_WXDIB |
| 156 | // no sense in defining wxShouldCreateDIB() as we can't compile code |
| 157 | // executed if it is true, so we have to use #if's anyhow |
| 158 | #define NEVER_USE_DIB |
| 159 | #else // wxUSE_WXDIB && !__WXWINCE__ |
| 160 | static inline bool wxShouldCreateDIB(int w, int h, int d, WXHDC hdc) |
| 161 | { |
| 162 | // here is the logic: |
| 163 | // |
| 164 | // (a) if hdc is specified, the caller explicitly wants DDB |
| 165 | // (b) otherwise, create a DIB if depth >= 24 (we don't support 16bpp |
| 166 | // or less DIBs anyhow) |
| 167 | // (c) finally, create DIBs under Win9x even if the depth hasn't been |
| 168 | // explicitly specified but the current display depth is 24 or |
| 169 | // more and the image is "big", i.e. > 16Mb which is the |
| 170 | // theoretical limit for DDBs under Win9x |
| 171 | // |
| 172 | // consequences (all of which seem to make sense): |
| 173 | // |
| 174 | // (i) by default, DDBs are created (depth == -1 usually) |
| 175 | // (ii) DIBs can be created by explicitly specifying the depth |
| 176 | // (iii) using a DC always forces creating a DDB |
| 177 | return !hdc && |
| 178 | (d >= 24 || |
| 179 | (d == -1 && |
| 180 | wxDIB::GetLineSize(w, wxDisplayDepth())*h > 16*1024*1024)); |
| 181 | } |
| 182 | |
| 183 | #define SOMETIMES_USE_DIB |
| 184 | #endif // different DIB usage scenarious |
| 185 | |
| 186 | // ---------------------------------------------------------------------------- |
| 187 | // wxBitmapRefData |
| 188 | // ---------------------------------------------------------------------------- |
| 189 | |
| 190 | wxBitmapRefData::wxBitmapRefData() |
| 191 | { |
| 192 | #ifdef __WXDEBUG__ |
| 193 | m_selectedInto = NULL; |
| 194 | #endif |
| 195 | m_bitmapMask = NULL; |
| 196 | |
| 197 | m_hBitmap = (WXHBITMAP) NULL; |
| 198 | #if wxUSE_WXDIB |
| 199 | m_dib = NULL; |
| 200 | #endif |
| 201 | |
| 202 | m_isDIB = |
| 203 | m_hasAlpha = false; |
| 204 | } |
| 205 | |
| 206 | wxBitmapRefData::wxBitmapRefData(const wxBitmapRefData& data) |
| 207 | : wxGDIImageRefData(data) |
| 208 | { |
| 209 | #ifdef __WXDEBUG__ |
| 210 | m_selectedInto = NULL; |
| 211 | #endif |
| 212 | |
| 213 | // can't copy the mask as the other bitmap destroys it |
| 214 | m_bitmapMask = NULL; |
| 215 | |
| 216 | wxASSERT_MSG( !data.m_isDIB, |
| 217 | _T("can't copy bitmap locked for raw access!") ); |
| 218 | m_isDIB = false; |
| 219 | |
| 220 | m_hasAlpha = data.m_hasAlpha; |
| 221 | } |
| 222 | |
| 223 | void wxBitmapRefData::Free() |
| 224 | { |
| 225 | wxASSERT_MSG( !m_selectedInto, |
| 226 | wxT("deleting bitmap still selected into wxMemoryDC") ); |
| 227 | |
| 228 | #if wxUSE_WXDIB |
| 229 | wxASSERT_MSG( !m_dib, _T("forgot to call wxBitmap::UngetRawData()!") ); |
| 230 | #endif |
| 231 | |
| 232 | if ( m_hBitmap) |
| 233 | { |
| 234 | if ( !::DeleteObject((HBITMAP)m_hBitmap) ) |
| 235 | { |
| 236 | wxLogLastError(wxT("DeleteObject(hbitmap)")); |
| 237 | } |
| 238 | } |
| 239 | |
| 240 | delete m_bitmapMask; |
| 241 | m_bitmapMask = NULL; |
| 242 | } |
| 243 | |
| 244 | // ---------------------------------------------------------------------------- |
| 245 | // wxBitmap creation |
| 246 | // ---------------------------------------------------------------------------- |
| 247 | |
| 248 | // this function should be called from all wxBitmap ctors |
| 249 | void wxBitmap::Init() |
| 250 | { |
| 251 | // m_refData = NULL; done in the base class ctor |
| 252 | } |
| 253 | |
| 254 | wxGDIImageRefData *wxBitmap::CreateData() const |
| 255 | { |
| 256 | return new wxBitmapRefData; |
| 257 | } |
| 258 | |
| 259 | wxObjectRefData *wxBitmap::CloneRefData(const wxObjectRefData *dataOrig) const |
| 260 | { |
| 261 | const wxBitmapRefData * |
| 262 | data = wx_static_cast(const wxBitmapRefData *, dataOrig); |
| 263 | if ( !data ) |
| 264 | return NULL; |
| 265 | |
| 266 | wxBitmap *self = wx_const_cast(wxBitmap *, this); |
| 267 | |
| 268 | #if wxUSE_WXDIB |
| 269 | // copy the other bitmap |
| 270 | if ( data->m_hBitmap ) |
| 271 | { |
| 272 | wxDIB dib((HBITMAP)(data->m_hBitmap)); |
| 273 | self->CopyFromDIB(dib); |
| 274 | } |
| 275 | else |
| 276 | #endif // wxUSE_WXDIB |
| 277 | { |
| 278 | // don't copy the bitmap data, but do copy the size, depth, ... |
| 279 | self->m_refData = new wxBitmapRefData(*data); |
| 280 | } |
| 281 | |
| 282 | return m_refData; |
| 283 | } |
| 284 | |
| 285 | #ifdef __WIN32__ |
| 286 | |
| 287 | bool wxBitmap::CopyFromIconOrCursor(const wxGDIImage& icon) |
| 288 | { |
| 289 | #if !defined(__WXMICROWIN__) && !defined(__WXWINCE__) |
| 290 | // it may be either HICON or HCURSOR |
| 291 | HICON hicon = (HICON)icon.GetHandle(); |
| 292 | |
| 293 | ICONINFO iconInfo; |
| 294 | if ( !::GetIconInfo(hicon, &iconInfo) ) |
| 295 | { |
| 296 | wxLogLastError(wxT("GetIconInfo")); |
| 297 | |
| 298 | return false; |
| 299 | } |
| 300 | |
| 301 | wxBitmapRefData *refData = new wxBitmapRefData; |
| 302 | m_refData = refData; |
| 303 | |
| 304 | int w = icon.GetWidth(), |
| 305 | h = icon.GetHeight(); |
| 306 | |
| 307 | refData->m_width = w; |
| 308 | refData->m_height = h; |
| 309 | refData->m_depth = wxDisplayDepth(); |
| 310 | |
| 311 | refData->m_hBitmap = (WXHBITMAP)iconInfo.hbmColor; |
| 312 | |
| 313 | // the mask returned by GetIconInfo() is inversed compared to the usual |
| 314 | // wxWin convention |
| 315 | refData->SetMask(wxInvertMask(iconInfo.hbmMask, w, h)); |
| 316 | |
| 317 | |
| 318 | // delete the old one now as we don't need it any more |
| 319 | ::DeleteObject(iconInfo.hbmMask); |
| 320 | |
| 321 | return true; |
| 322 | #else |
| 323 | wxUnusedVar(icon); |
| 324 | return false; |
| 325 | #endif |
| 326 | } |
| 327 | |
| 328 | #endif // Win32 |
| 329 | |
| 330 | bool wxBitmap::CopyFromCursor(const wxCursor& cursor) |
| 331 | { |
| 332 | UnRef(); |
| 333 | |
| 334 | if ( !cursor.Ok() ) |
| 335 | return false; |
| 336 | |
| 337 | return CopyFromIconOrCursor(cursor); |
| 338 | } |
| 339 | |
| 340 | bool wxBitmap::CopyFromIcon(const wxIcon& icon) |
| 341 | { |
| 342 | UnRef(); |
| 343 | |
| 344 | if ( !icon.Ok() ) |
| 345 | return false; |
| 346 | |
| 347 | return CopyFromIconOrCursor(icon); |
| 348 | } |
| 349 | |
| 350 | #ifndef NEVER_USE_DIB |
| 351 | |
| 352 | bool wxBitmap::CopyFromDIB(const wxDIB& dib) |
| 353 | { |
| 354 | wxCHECK_MSG( dib.IsOk(), false, _T("invalid DIB in CopyFromDIB") ); |
| 355 | |
| 356 | #ifdef SOMETIMES_USE_DIB |
| 357 | HBITMAP hbitmap = dib.CreateDDB(); |
| 358 | if ( !hbitmap ) |
| 359 | return false; |
| 360 | #else // ALWAYS_USE_DIB |
| 361 | HBITMAP hbitmap = ((wxDIB &)dib).Detach(); // const_cast |
| 362 | #endif // SOMETIMES_USE_DIB/ALWAYS_USE_DIB |
| 363 | |
| 364 | UnRef(); |
| 365 | |
| 366 | wxBitmapRefData *refData = new wxBitmapRefData; |
| 367 | m_refData = refData; |
| 368 | |
| 369 | refData->m_width = dib.GetWidth(); |
| 370 | refData->m_height = dib.GetHeight(); |
| 371 | refData->m_depth = dib.GetDepth(); |
| 372 | |
| 373 | refData->m_hBitmap = (WXHBITMAP)hbitmap; |
| 374 | |
| 375 | #if wxUSE_PALETTE |
| 376 | wxPalette *palette = dib.CreatePalette(); |
| 377 | if ( palette ) |
| 378 | { |
| 379 | refData->m_bitmapPalette = *palette; |
| 380 | } |
| 381 | |
| 382 | delete palette; |
| 383 | #endif // wxUSE_PALETTE |
| 384 | |
| 385 | return true; |
| 386 | } |
| 387 | |
| 388 | #endif // NEVER_USE_DIB |
| 389 | |
| 390 | wxBitmap::~wxBitmap() |
| 391 | { |
| 392 | } |
| 393 | |
| 394 | wxBitmap::wxBitmap(const char bits[], int width, int height, int depth) |
| 395 | { |
| 396 | Init(); |
| 397 | |
| 398 | #ifndef __WXMICROWIN__ |
| 399 | wxBitmapRefData *refData = new wxBitmapRefData; |
| 400 | m_refData = refData; |
| 401 | |
| 402 | refData->m_width = width; |
| 403 | refData->m_height = height; |
| 404 | refData->m_depth = depth; |
| 405 | |
| 406 | char *data; |
| 407 | if ( depth == 1 ) |
| 408 | { |
| 409 | // we assume that it is in XBM format which is not quite the same as |
| 410 | // the format CreateBitmap() wants because the order of bytes in the |
| 411 | // line is inversed! |
| 412 | const size_t bytesPerLine = (width + 7) / 8; |
| 413 | const size_t padding = bytesPerLine % 2; |
| 414 | const size_t len = height * ( padding + bytesPerLine ); |
| 415 | data = (char *)malloc(len); |
| 416 | const char *src = bits; |
| 417 | char *dst = data; |
| 418 | |
| 419 | for ( int rows = 0; rows < height; rows++ ) |
| 420 | { |
| 421 | for ( size_t cols = 0; cols < bytesPerLine; cols++ ) |
| 422 | { |
| 423 | unsigned char val = *src++; |
| 424 | unsigned char reversed = 0; |
| 425 | |
| 426 | for ( int bits = 0; bits < 8; bits++) |
| 427 | { |
| 428 | reversed <<= 1; |
| 429 | reversed |= (val & 0x01); |
| 430 | val >>= 1; |
| 431 | } |
| 432 | *dst++ = reversed; |
| 433 | } |
| 434 | |
| 435 | if ( padding ) |
| 436 | *dst++ = 0; |
| 437 | } |
| 438 | } |
| 439 | else |
| 440 | { |
| 441 | // bits should already be in Windows standard format |
| 442 | data = (char *)bits; // const_cast is harmless |
| 443 | } |
| 444 | |
| 445 | HBITMAP hbmp = ::CreateBitmap(width, height, 1, depth, data); |
| 446 | if ( !hbmp ) |
| 447 | { |
| 448 | wxLogLastError(wxT("CreateBitmap")); |
| 449 | } |
| 450 | |
| 451 | if ( data != bits ) |
| 452 | { |
| 453 | free(data); |
| 454 | } |
| 455 | |
| 456 | SetHBITMAP((WXHBITMAP)hbmp); |
| 457 | #endif |
| 458 | } |
| 459 | |
| 460 | // Create from XPM data |
| 461 | bool wxBitmap::CreateFromXpm(const char **data) |
| 462 | { |
| 463 | #if wxUSE_IMAGE && wxUSE_XPM |
| 464 | Init(); |
| 465 | |
| 466 | wxCHECK_MSG( data != NULL, false, wxT("invalid bitmap data") ) |
| 467 | |
| 468 | wxXPMDecoder decoder; |
| 469 | wxImage img = decoder.ReadData(data); |
| 470 | wxCHECK_MSG( img.Ok(), false, wxT("invalid bitmap data") ) |
| 471 | |
| 472 | *this = wxBitmap(img); |
| 473 | return true; |
| 474 | #else |
| 475 | wxUnusedVar(data); |
| 476 | return false; |
| 477 | #endif |
| 478 | } |
| 479 | |
| 480 | wxBitmap::wxBitmap(int w, int h, int d) |
| 481 | { |
| 482 | Init(); |
| 483 | |
| 484 | (void)Create(w, h, d); |
| 485 | } |
| 486 | |
| 487 | wxBitmap::wxBitmap(int w, int h, const wxDC& dc) |
| 488 | { |
| 489 | Init(); |
| 490 | |
| 491 | (void)Create(w, h, dc); |
| 492 | } |
| 493 | |
| 494 | wxBitmap::wxBitmap(void *data, long type, int width, int height, int depth) |
| 495 | { |
| 496 | Init(); |
| 497 | |
| 498 | (void)Create(data, type, width, height, depth); |
| 499 | } |
| 500 | |
| 501 | wxBitmap::wxBitmap(const wxString& filename, wxBitmapType type) |
| 502 | { |
| 503 | Init(); |
| 504 | |
| 505 | LoadFile(filename, (int)type); |
| 506 | } |
| 507 | |
| 508 | bool wxBitmap::Create(int width, int height, int depth) |
| 509 | { |
| 510 | return DoCreate(width, height, depth, 0); |
| 511 | } |
| 512 | |
| 513 | bool wxBitmap::Create(int width, int height, const wxDC& dc) |
| 514 | { |
| 515 | wxCHECK_MSG( dc.Ok(), false, _T("invalid HDC in wxBitmap::Create()") ); |
| 516 | |
| 517 | return DoCreate(width, height, -1, dc.GetHDC()); |
| 518 | } |
| 519 | |
| 520 | bool wxBitmap::DoCreate(int w, int h, int d, WXHDC hdc) |
| 521 | { |
| 522 | UnRef(); |
| 523 | |
| 524 | m_refData = new wxBitmapRefData; |
| 525 | |
| 526 | GetBitmapData()->m_width = w; |
| 527 | GetBitmapData()->m_height = h; |
| 528 | |
| 529 | HBITMAP hbmp wxDUMMY_INITIALIZE(0); |
| 530 | |
| 531 | #ifndef NEVER_USE_DIB |
| 532 | if ( wxShouldCreateDIB(w, h, d, hdc) ) |
| 533 | { |
| 534 | if ( d == -1 ) |
| 535 | { |
| 536 | // create DIBs without alpha channel by default |
| 537 | d = 24; |
| 538 | } |
| 539 | |
| 540 | wxDIB dib(w, h, d); |
| 541 | if ( !dib.IsOk() ) |
| 542 | return false; |
| 543 | |
| 544 | // don't delete the DIB section in dib object dtor |
| 545 | hbmp = dib.Detach(); |
| 546 | |
| 547 | GetBitmapData()->m_isDIB = true; |
| 548 | GetBitmapData()->m_depth = d; |
| 549 | } |
| 550 | else // create a DDB |
| 551 | #endif // NEVER_USE_DIB |
| 552 | { |
| 553 | #ifndef ALWAYS_USE_DIB |
| 554 | #ifndef __WXMICROWIN__ |
| 555 | if ( d > 0 ) |
| 556 | { |
| 557 | hbmp = ::CreateBitmap(w, h, 1, d, NULL); |
| 558 | if ( !hbmp ) |
| 559 | { |
| 560 | wxLogLastError(wxT("CreateBitmap")); |
| 561 | } |
| 562 | |
| 563 | GetBitmapData()->m_depth = d; |
| 564 | } |
| 565 | else // d == 0, create bitmap compatible with the screen |
| 566 | #endif // !__WXMICROWIN__ |
| 567 | { |
| 568 | ScreenHDC dc; |
| 569 | hbmp = ::CreateCompatibleBitmap(dc, w, h); |
| 570 | if ( !hbmp ) |
| 571 | { |
| 572 | wxLogLastError(wxT("CreateCompatibleBitmap")); |
| 573 | } |
| 574 | |
| 575 | GetBitmapData()->m_depth = wxDisplayDepth(); |
| 576 | } |
| 577 | #endif // !ALWAYS_USE_DIB |
| 578 | } |
| 579 | |
| 580 | SetHBITMAP((WXHBITMAP)hbmp); |
| 581 | |
| 582 | return Ok(); |
| 583 | } |
| 584 | |
| 585 | #if wxUSE_IMAGE |
| 586 | |
| 587 | // ---------------------------------------------------------------------------- |
| 588 | // wxImage to/from conversions for Microwin |
| 589 | // ---------------------------------------------------------------------------- |
| 590 | |
| 591 | // Microwin versions are so different from normal ones that it really doesn't |
| 592 | // make sense to use #ifdefs inside the function bodies |
| 593 | #ifdef __WXMICROWIN__ |
| 594 | |
| 595 | bool wxBitmap::CreateFromImage(const wxImage& image, int depth, const wxDC& dc) |
| 596 | { |
| 597 | // Set this to 1 to experiment with mask code, |
| 598 | // which currently doesn't work |
| 599 | #define USE_MASKS 0 |
| 600 | |
| 601 | m_refData = new wxBitmapRefData(); |
| 602 | |
| 603 | // Initial attempt at a simple-minded implementation. |
| 604 | // The bitmap will always be created at the screen depth, |
| 605 | // so the 'depth' argument is ignored. |
| 606 | |
| 607 | HDC hScreenDC = ::GetDC(NULL); |
| 608 | int screenDepth = ::GetDeviceCaps(hScreenDC, BITSPIXEL); |
| 609 | |
| 610 | HBITMAP hBitmap = ::CreateCompatibleBitmap(hScreenDC, image.GetWidth(), image.GetHeight()); |
| 611 | HBITMAP hMaskBitmap = NULL; |
| 612 | HBITMAP hOldMaskBitmap = NULL; |
| 613 | HDC hMaskDC = NULL; |
| 614 | unsigned char maskR = 0; |
| 615 | unsigned char maskG = 0; |
| 616 | unsigned char maskB = 0; |
| 617 | |
| 618 | // printf("Created bitmap %d\n", (int) hBitmap); |
| 619 | if (hBitmap == NULL) |
| 620 | { |
| 621 | ::ReleaseDC(NULL, hScreenDC); |
| 622 | return false; |
| 623 | } |
| 624 | HDC hMemDC = ::CreateCompatibleDC(hScreenDC); |
| 625 | |
| 626 | HBITMAP hOldBitmap = ::SelectObject(hMemDC, hBitmap); |
| 627 | ::ReleaseDC(NULL, hScreenDC); |
| 628 | |
| 629 | // created an mono-bitmap for the possible mask |
| 630 | bool hasMask = image.HasMask(); |
| 631 | |
| 632 | if ( hasMask ) |
| 633 | { |
| 634 | #if USE_MASKS |
| 635 | // FIXME: we should be able to pass bpp = 1, but |
| 636 | // GdBlit can't handle a different depth |
| 637 | #if 0 |
| 638 | hMaskBitmap = ::CreateBitmap( (WORD)image.GetWidth(), (WORD)image.GetHeight(), 1, 1, NULL ); |
| 639 | #else |
| 640 | hMaskBitmap = ::CreateCompatibleBitmap( hMemDC, (WORD)image.GetWidth(), (WORD)image.GetHeight()); |
| 641 | #endif |
| 642 | maskR = image.GetMaskRed(); |
| 643 | maskG = image.GetMaskGreen(); |
| 644 | maskB = image.GetMaskBlue(); |
| 645 | |
| 646 | if (!hMaskBitmap) |
| 647 | { |
| 648 | hasMask = false; |
| 649 | } |
| 650 | else |
| 651 | { |
| 652 | hScreenDC = ::GetDC(NULL); |
| 653 | hMaskDC = ::CreateCompatibleDC(hScreenDC); |
| 654 | ::ReleaseDC(NULL, hScreenDC); |
| 655 | |
| 656 | hOldMaskBitmap = ::SelectObject( hMaskDC, hMaskBitmap); |
| 657 | } |
| 658 | #else |
| 659 | hasMask = false; |
| 660 | #endif |
| 661 | } |
| 662 | |
| 663 | int i, j; |
| 664 | for (i = 0; i < image.GetWidth(); i++) |
| 665 | { |
| 666 | for (j = 0; j < image.GetHeight(); j++) |
| 667 | { |
| 668 | unsigned char red = image.GetRed(i, j); |
| 669 | unsigned char green = image.GetGreen(i, j); |
| 670 | unsigned char blue = image.GetBlue(i, j); |
| 671 | |
| 672 | ::SetPixel(hMemDC, i, j, PALETTERGB(red, green, blue)); |
| 673 | |
| 674 | if (hasMask) |
| 675 | { |
| 676 | // scan the bitmap for the transparent colour and set the corresponding |
| 677 | // pixels in the mask to BLACK and the rest to WHITE |
| 678 | if (maskR == red && maskG == green && maskB == blue) |
| 679 | ::SetPixel(hMaskDC, i, j, PALETTERGB(0, 0, 0)); |
| 680 | else |
| 681 | ::SetPixel(hMaskDC, i, j, PALETTERGB(255, 255, 255)); |
| 682 | } |
| 683 | } |
| 684 | } |
| 685 | |
| 686 | ::SelectObject(hMemDC, hOldBitmap); |
| 687 | ::DeleteDC(hMemDC); |
| 688 | if (hasMask) |
| 689 | { |
| 690 | ::SelectObject(hMaskDC, hOldMaskBitmap); |
| 691 | ::DeleteDC(hMaskDC); |
| 692 | |
| 693 | ((wxBitmapRefData*)m_refData)->SetMask(hMaskBitmap); |
| 694 | } |
| 695 | |
| 696 | SetWidth(image.GetWidth()); |
| 697 | SetHeight(image.GetHeight()); |
| 698 | SetDepth(screenDepth); |
| 699 | SetHBITMAP( (WXHBITMAP) hBitmap ); |
| 700 | |
| 701 | #if wxUSE_PALETTE |
| 702 | // Copy the palette from the source image |
| 703 | SetPalette(image.GetPalette()); |
| 704 | #endif // wxUSE_PALETTE |
| 705 | |
| 706 | return true; |
| 707 | } |
| 708 | |
| 709 | wxImage wxBitmap::ConvertToImage() const |
| 710 | { |
| 711 | // Initial attempt at a simple-minded implementation. |
| 712 | // The bitmap will always be created at the screen depth, |
| 713 | // so the 'depth' argument is ignored. |
| 714 | // TODO: transparency (create a mask image) |
| 715 | |
| 716 | if (!Ok()) |
| 717 | { |
| 718 | wxFAIL_MSG( wxT("bitmap is invalid") ); |
| 719 | return wxNullImage; |
| 720 | } |
| 721 | |
| 722 | wxImage image; |
| 723 | |
| 724 | wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") ); |
| 725 | |
| 726 | // create an wxImage object |
| 727 | int width = GetWidth(); |
| 728 | int height = GetHeight(); |
| 729 | image.Create( width, height ); |
| 730 | unsigned char *data = image.GetData(); |
| 731 | if( !data ) |
| 732 | { |
| 733 | wxFAIL_MSG( wxT("could not allocate data for image") ); |
| 734 | return wxNullImage; |
| 735 | } |
| 736 | |
| 737 | HDC hScreenDC = ::GetDC(NULL); |
| 738 | |
| 739 | HDC hMemDC = ::CreateCompatibleDC(hScreenDC); |
| 740 | ::ReleaseDC(NULL, hScreenDC); |
| 741 | |
| 742 | HBITMAP hBitmap = (HBITMAP) GetHBITMAP(); |
| 743 | |
| 744 | HBITMAP hOldBitmap = ::SelectObject(hMemDC, hBitmap); |
| 745 | |
| 746 | int i, j; |
| 747 | for (i = 0; i < GetWidth(); i++) |
| 748 | { |
| 749 | for (j = 0; j < GetHeight(); j++) |
| 750 | { |
| 751 | COLORREF color = ::GetPixel(hMemDC, i, j); |
| 752 | unsigned char red = GetRValue(color); |
| 753 | unsigned char green = GetGValue(color); |
| 754 | unsigned char blue = GetBValue(color); |
| 755 | |
| 756 | image.SetRGB(i, j, red, green, blue); |
| 757 | } |
| 758 | } |
| 759 | |
| 760 | ::SelectObject(hMemDC, hOldBitmap); |
| 761 | ::DeleteDC(hMemDC); |
| 762 | |
| 763 | #if wxUSE_PALETTE |
| 764 | // Copy the palette from the source image |
| 765 | if (GetPalette()) |
| 766 | image.SetPalette(* GetPalette()); |
| 767 | #endif // wxUSE_PALETTE |
| 768 | |
| 769 | return image; |
| 770 | } |
| 771 | |
| 772 | #endif // __WXMICROWIN__ |
| 773 | |
| 774 | // ---------------------------------------------------------------------------- |
| 775 | // wxImage to/from conversions |
| 776 | // ---------------------------------------------------------------------------- |
| 777 | |
| 778 | #if wxUSE_WXDIB |
| 779 | |
| 780 | bool wxBitmap::CreateFromImage(const wxImage& image, int depth) |
| 781 | { |
| 782 | return CreateFromImage(image, depth, 0); |
| 783 | } |
| 784 | |
| 785 | bool wxBitmap::CreateFromImage(const wxImage& image, const wxDC& dc) |
| 786 | { |
| 787 | wxCHECK_MSG( dc.Ok(), false, |
| 788 | _T("invalid HDC in wxBitmap::CreateFromImage()") ); |
| 789 | |
| 790 | return CreateFromImage(image, -1, dc.GetHDC()); |
| 791 | } |
| 792 | |
| 793 | bool wxBitmap::CreateFromImage(const wxImage& image, int depth, WXHDC hdc) |
| 794 | { |
| 795 | wxCHECK_MSG( image.Ok(), false, wxT("invalid image") ); |
| 796 | |
| 797 | UnRef(); |
| 798 | |
| 799 | // first convert the image to DIB |
| 800 | const int h = image.GetHeight(); |
| 801 | const int w = image.GetWidth(); |
| 802 | |
| 803 | wxDIB dib(image); |
| 804 | if ( !dib.IsOk() ) |
| 805 | return false; |
| 806 | |
| 807 | |
| 808 | // store the bitmap parameters |
| 809 | wxBitmapRefData *refData = new wxBitmapRefData; |
| 810 | refData->m_width = w; |
| 811 | refData->m_height = h; |
| 812 | refData->m_hasAlpha = image.HasAlpha(); |
| 813 | |
| 814 | m_refData = refData; |
| 815 | |
| 816 | |
| 817 | // next either store DIB as is or create a DDB from it |
| 818 | HBITMAP hbitmap wxDUMMY_INITIALIZE(0); |
| 819 | |
| 820 | // are we going to use DIB? |
| 821 | // |
| 822 | // NB: DDBs don't support alpha so if we have alpha channel we must use DIB |
| 823 | if ( image.HasAlpha() || wxShouldCreateDIB(w, h, depth, hdc) ) |
| 824 | { |
| 825 | // don't delete the DIB section in dib object dtor |
| 826 | hbitmap = dib.Detach(); |
| 827 | |
| 828 | refData->m_isDIB = true; |
| 829 | refData->m_depth = dib.GetDepth(); |
| 830 | } |
| 831 | #ifndef ALWAYS_USE_DIB |
| 832 | else // we need to convert DIB to DDB |
| 833 | { |
| 834 | hbitmap = dib.CreateDDB((HDC)hdc); |
| 835 | |
| 836 | refData->m_depth = depth == -1 ? dib.GetDepth() : depth; |
| 837 | } |
| 838 | #endif // !ALWAYS_USE_DIB |
| 839 | |
| 840 | // validate this object |
| 841 | SetHBITMAP((WXHBITMAP)hbitmap); |
| 842 | |
| 843 | // finally also set the mask if we have one |
| 844 | if ( image.HasMask() ) |
| 845 | { |
| 846 | SetMask(new wxMask(*this, wxColour(image.GetMaskRed(), |
| 847 | image.GetMaskGreen(), |
| 848 | image.GetMaskBlue()))); |
| 849 | } |
| 850 | |
| 851 | return true; |
| 852 | } |
| 853 | |
| 854 | wxImage wxBitmap::ConvertToImage() const |
| 855 | { |
| 856 | // convert DDB to DIB |
| 857 | wxDIB dib(*this); |
| 858 | |
| 859 | if ( !dib.IsOk() ) |
| 860 | { |
| 861 | return wxNullImage; |
| 862 | } |
| 863 | |
| 864 | // and then DIB to our wxImage |
| 865 | wxImage image = dib.ConvertToImage(); |
| 866 | if ( !image.Ok() ) |
| 867 | { |
| 868 | return wxNullImage; |
| 869 | } |
| 870 | |
| 871 | // now do the same for the mask, if we have any |
| 872 | HBITMAP hbmpMask = GetMask() ? (HBITMAP) GetMask()->GetMaskBitmap() : NULL; |
| 873 | if ( hbmpMask ) |
| 874 | { |
| 875 | wxDIB dibMask(hbmpMask); |
| 876 | if ( dibMask.IsOk() ) |
| 877 | { |
| 878 | // TODO: use wxRawBitmap to iterate over DIB |
| 879 | |
| 880 | // we hard code the mask colour for now but we could also make an |
| 881 | // effort (and waste time) to choose a colour not present in the |
| 882 | // image already to avoid having to fudge the pixels below -- |
| 883 | // whether it's worth to do it is unclear however |
| 884 | static const int MASK_RED = 1; |
| 885 | static const int MASK_GREEN = 2; |
| 886 | static const int MASK_BLUE = 3; |
| 887 | static const int MASK_BLUE_REPLACEMENT = 2; |
| 888 | |
| 889 | const int h = dibMask.GetHeight(); |
| 890 | const int w = dibMask.GetWidth(); |
| 891 | const int bpp = dibMask.GetDepth(); |
| 892 | const int maskBytesPerPixel = bpp >> 3; |
| 893 | const int maskBytesPerLine = wxDIB::GetLineSize(w, bpp); |
| 894 | unsigned char *data = image.GetData(); |
| 895 | |
| 896 | // remember that DIBs are stored in bottom to top order |
| 897 | unsigned char * |
| 898 | maskLineStart = dibMask.GetData() + ((h - 1) * maskBytesPerLine); |
| 899 | |
| 900 | for ( int y = 0; y < h; y++, maskLineStart -= maskBytesPerLine ) |
| 901 | { |
| 902 | // traverse one mask DIB line |
| 903 | unsigned char *mask = maskLineStart; |
| 904 | for ( int x = 0; x < w; x++, mask += maskBytesPerPixel ) |
| 905 | { |
| 906 | // should this pixel be transparent? |
| 907 | if ( *mask ) |
| 908 | { |
| 909 | // no, check that it isn't transparent by accident |
| 910 | if ( (data[0] == MASK_RED) && |
| 911 | (data[1] == MASK_GREEN) && |
| 912 | (data[2] == MASK_BLUE) ) |
| 913 | { |
| 914 | // we have to fudge the colour a bit to prevent |
| 915 | // this pixel from appearing transparent |
| 916 | data[2] = MASK_BLUE_REPLACEMENT; |
| 917 | } |
| 918 | |
| 919 | data += 3; |
| 920 | } |
| 921 | else // yes, transparent pixel |
| 922 | { |
| 923 | *data++ = MASK_RED; |
| 924 | *data++ = MASK_GREEN; |
| 925 | *data++ = MASK_BLUE; |
| 926 | } |
| 927 | } |
| 928 | } |
| 929 | |
| 930 | image.SetMaskColour(MASK_RED, MASK_GREEN, MASK_BLUE); |
| 931 | } |
| 932 | } |
| 933 | |
| 934 | return image; |
| 935 | } |
| 936 | |
| 937 | #endif // wxUSE_WXDIB |
| 938 | |
| 939 | #endif // wxUSE_IMAGE |
| 940 | |
| 941 | // ---------------------------------------------------------------------------- |
| 942 | // loading and saving bitmaps |
| 943 | // ---------------------------------------------------------------------------- |
| 944 | |
| 945 | bool wxBitmap::LoadFile(const wxString& filename, long type) |
| 946 | { |
| 947 | UnRef(); |
| 948 | |
| 949 | wxBitmapHandler *handler = wxDynamicCast(FindHandler(type), wxBitmapHandler); |
| 950 | |
| 951 | if ( handler ) |
| 952 | { |
| 953 | m_refData = new wxBitmapRefData; |
| 954 | |
| 955 | return handler->LoadFile(this, filename, type, -1, -1); |
| 956 | } |
| 957 | #if wxUSE_IMAGE |
| 958 | else // no bitmap handler found |
| 959 | { |
| 960 | wxImage image; |
| 961 | if ( image.LoadFile( filename, type ) && image.Ok() ) |
| 962 | { |
| 963 | *this = wxBitmap(image); |
| 964 | |
| 965 | return true; |
| 966 | } |
| 967 | } |
| 968 | #endif // wxUSE_IMAGE |
| 969 | |
| 970 | return false; |
| 971 | } |
| 972 | |
| 973 | bool wxBitmap::Create(void *data, long type, int width, int height, int depth) |
| 974 | { |
| 975 | UnRef(); |
| 976 | |
| 977 | wxBitmapHandler *handler = wxDynamicCast(FindHandler(type), wxBitmapHandler); |
| 978 | |
| 979 | if ( !handler ) |
| 980 | { |
| 981 | wxLogDebug(wxT("Failed to create bitmap: no bitmap handler for type %ld defined."), type); |
| 982 | |
| 983 | return false; |
| 984 | } |
| 985 | |
| 986 | m_refData = new wxBitmapRefData; |
| 987 | |
| 988 | return handler->Create(this, data, type, width, height, depth); |
| 989 | } |
| 990 | |
| 991 | bool wxBitmap::SaveFile(const wxString& filename, |
| 992 | int type, |
| 993 | const wxPalette *palette) |
| 994 | { |
| 995 | wxBitmapHandler *handler = wxDynamicCast(FindHandler(type), wxBitmapHandler); |
| 996 | |
| 997 | if ( handler ) |
| 998 | { |
| 999 | return handler->SaveFile(this, filename, type, palette); |
| 1000 | } |
| 1001 | #if wxUSE_IMAGE |
| 1002 | else // no bitmap handler found |
| 1003 | { |
| 1004 | // FIXME what about palette? shouldn't we use it? |
| 1005 | wxImage image = ConvertToImage(); |
| 1006 | if ( image.Ok() ) |
| 1007 | { |
| 1008 | return image.SaveFile(filename, type); |
| 1009 | } |
| 1010 | } |
| 1011 | #endif // wxUSE_IMAGE |
| 1012 | |
| 1013 | return false; |
| 1014 | } |
| 1015 | |
| 1016 | // ---------------------------------------------------------------------------- |
| 1017 | // sub bitmap extraction |
| 1018 | // ---------------------------------------------------------------------------- |
| 1019 | |
| 1020 | wxBitmap wxBitmap::GetSubBitmap( const wxRect& rect) const |
| 1021 | { |
| 1022 | wxCHECK_MSG( Ok() && |
| 1023 | (rect.x >= 0) && (rect.y >= 0) && |
| 1024 | (rect.x+rect.width <= GetWidth()) && |
| 1025 | (rect.y+rect.height <= GetHeight()), |
| 1026 | wxNullBitmap, wxT("Invalid bitmap or bitmap region") ); |
| 1027 | |
| 1028 | wxBitmap ret( rect.width, rect.height ); |
| 1029 | wxASSERT_MSG( ret.Ok(), wxT("GetSubBitmap error") ); |
| 1030 | |
| 1031 | #ifndef __WXMICROWIN__ |
| 1032 | // TODO: copy alpha channel data if any |
| 1033 | |
| 1034 | // copy bitmap data |
| 1035 | MemoryHDC dcSrc, |
| 1036 | dcDst; |
| 1037 | |
| 1038 | { |
| 1039 | SelectInHDC selectSrc(dcSrc, GetHbitmap()), |
| 1040 | selectDst(dcDst, GetHbitmapOf(ret)); |
| 1041 | |
| 1042 | if ( !selectSrc || !selectDst ) |
| 1043 | { |
| 1044 | wxLogLastError(_T("SelectObjct(hBitmap)")); |
| 1045 | } |
| 1046 | |
| 1047 | if ( !::BitBlt(dcDst, 0, 0, rect.width, rect.height, |
| 1048 | dcSrc, rect.x, rect.y, SRCCOPY) ) |
| 1049 | { |
| 1050 | wxLogLastError(_T("BitBlt")); |
| 1051 | } |
| 1052 | } |
| 1053 | |
| 1054 | // copy mask if there is one |
| 1055 | if ( GetMask() ) |
| 1056 | { |
| 1057 | HBITMAP hbmpMask = ::CreateBitmap(rect.width, rect.height, 1, 1, 0); |
| 1058 | |
| 1059 | SelectInHDC selectSrc(dcSrc, (HBITMAP) GetMask()->GetMaskBitmap()), |
| 1060 | selectDst(dcDst, hbmpMask); |
| 1061 | |
| 1062 | if ( !::BitBlt(dcDst, 0, 0, rect.width, rect.height, |
| 1063 | dcSrc, rect.x, rect.y, SRCCOPY) ) |
| 1064 | { |
| 1065 | wxLogLastError(_T("BitBlt")); |
| 1066 | } |
| 1067 | |
| 1068 | wxMask *mask = new wxMask((WXHBITMAP) hbmpMask); |
| 1069 | ret.SetMask(mask); |
| 1070 | } |
| 1071 | #endif // !__WXMICROWIN__ |
| 1072 | |
| 1073 | return ret; |
| 1074 | } |
| 1075 | |
| 1076 | // ---------------------------------------------------------------------------- |
| 1077 | // wxBitmap accessors |
| 1078 | // ---------------------------------------------------------------------------- |
| 1079 | |
| 1080 | #if wxUSE_PALETTE |
| 1081 | wxPalette* wxBitmap::GetPalette() const |
| 1082 | { |
| 1083 | return GetBitmapData() ? &GetBitmapData()->m_bitmapPalette |
| 1084 | : (wxPalette *) NULL; |
| 1085 | } |
| 1086 | #endif |
| 1087 | |
| 1088 | wxMask *wxBitmap::GetMask() const |
| 1089 | { |
| 1090 | return GetBitmapData() ? GetBitmapData()->GetMask() : (wxMask *) NULL; |
| 1091 | } |
| 1092 | |
| 1093 | #ifdef __WXDEBUG__ |
| 1094 | |
| 1095 | wxDC *wxBitmap::GetSelectedInto() const |
| 1096 | { |
| 1097 | return GetBitmapData() ? GetBitmapData()->m_selectedInto : (wxDC *) NULL; |
| 1098 | } |
| 1099 | |
| 1100 | #endif |
| 1101 | |
| 1102 | #if WXWIN_COMPATIBILITY_2_4 |
| 1103 | |
| 1104 | int wxBitmap::GetQuality() const |
| 1105 | { |
| 1106 | return 0; |
| 1107 | } |
| 1108 | |
| 1109 | #endif // WXWIN_COMPATIBILITY_2_4 |
| 1110 | |
| 1111 | void wxBitmap::UseAlpha() |
| 1112 | { |
| 1113 | if ( GetBitmapData() ) |
| 1114 | GetBitmapData()->m_hasAlpha = true; |
| 1115 | } |
| 1116 | |
| 1117 | bool wxBitmap::HasAlpha() const |
| 1118 | { |
| 1119 | return GetBitmapData() && GetBitmapData()->m_hasAlpha; |
| 1120 | } |
| 1121 | |
| 1122 | // ---------------------------------------------------------------------------- |
| 1123 | // wxBitmap setters |
| 1124 | // ---------------------------------------------------------------------------- |
| 1125 | |
| 1126 | #ifdef __WXDEBUG__ |
| 1127 | |
| 1128 | void wxBitmap::SetSelectedInto(wxDC *dc) |
| 1129 | { |
| 1130 | if ( GetBitmapData() ) |
| 1131 | GetBitmapData()->m_selectedInto = dc; |
| 1132 | } |
| 1133 | |
| 1134 | #endif |
| 1135 | |
| 1136 | #if wxUSE_PALETTE |
| 1137 | |
| 1138 | void wxBitmap::SetPalette(const wxPalette& palette) |
| 1139 | { |
| 1140 | AllocExclusive(); |
| 1141 | |
| 1142 | GetBitmapData()->m_bitmapPalette = palette; |
| 1143 | } |
| 1144 | |
| 1145 | #endif // wxUSE_PALETTE |
| 1146 | |
| 1147 | void wxBitmap::SetMask(wxMask *mask) |
| 1148 | { |
| 1149 | AllocExclusive(); |
| 1150 | |
| 1151 | GetBitmapData()->SetMask(mask); |
| 1152 | } |
| 1153 | |
| 1154 | #if WXWIN_COMPATIBILITY_2_4 |
| 1155 | |
| 1156 | void wxBitmap::SetQuality(int WXUNUSED(quality)) |
| 1157 | { |
| 1158 | } |
| 1159 | |
| 1160 | #endif // WXWIN_COMPATIBILITY_2_4 |
| 1161 | |
| 1162 | // ---------------------------------------------------------------------------- |
| 1163 | // raw bitmap access support |
| 1164 | // ---------------------------------------------------------------------------- |
| 1165 | |
| 1166 | #ifdef wxHAVE_RAW_BITMAP |
| 1167 | void *wxBitmap::GetRawData(wxPixelDataBase& data, int bpp) |
| 1168 | { |
| 1169 | #if wxUSE_WXDIB |
| 1170 | if ( !Ok() ) |
| 1171 | { |
| 1172 | // no bitmap, no data (raw or otherwise) |
| 1173 | return NULL; |
| 1174 | } |
| 1175 | |
| 1176 | // if we're already a DIB we can access our data directly, but if not we |
| 1177 | // need to convert this DDB to a DIB section and use it for raw access and |
| 1178 | // then convert it back |
| 1179 | HBITMAP hDIB; |
| 1180 | if ( !GetBitmapData()->m_isDIB ) |
| 1181 | { |
| 1182 | wxCHECK_MSG( !GetBitmapData()->m_dib, FALSE, |
| 1183 | _T("GetRawData() may be called only once") ); |
| 1184 | |
| 1185 | wxDIB *dib = new wxDIB(*this); |
| 1186 | if ( !dib->IsOk() ) |
| 1187 | { |
| 1188 | delete dib; |
| 1189 | |
| 1190 | return NULL; |
| 1191 | } |
| 1192 | |
| 1193 | // we'll free it in UngetRawData() |
| 1194 | GetBitmapData()->m_dib = dib; |
| 1195 | |
| 1196 | hDIB = dib->GetHandle(); |
| 1197 | } |
| 1198 | else // we're a DIB |
| 1199 | { |
| 1200 | hDIB = GetHbitmap(); |
| 1201 | } |
| 1202 | |
| 1203 | DIBSECTION ds; |
| 1204 | if ( ::GetObject(hDIB, sizeof(ds), &ds) != sizeof(DIBSECTION) ) |
| 1205 | { |
| 1206 | wxFAIL_MSG( _T("failed to get DIBSECTION from a DIB?") ); |
| 1207 | |
| 1208 | return NULL; |
| 1209 | } |
| 1210 | |
| 1211 | // check that the bitmap is in correct format |
| 1212 | if ( ds.dsBm.bmBitsPixel != bpp ) |
| 1213 | { |
| 1214 | wxFAIL_MSG( _T("incorrect bitmap type in wxBitmap::GetRawData()") ); |
| 1215 | |
| 1216 | return NULL; |
| 1217 | } |
| 1218 | |
| 1219 | // ok, store the relevant info in wxPixelDataBase |
| 1220 | const LONG h = ds.dsBm.bmHeight; |
| 1221 | |
| 1222 | data.m_width = ds.dsBm.bmWidth; |
| 1223 | data.m_height = h; |
| 1224 | |
| 1225 | // remember that DIBs are stored in top to bottom order! |
| 1226 | const LONG bytesPerRow = ds.dsBm.bmWidthBytes; |
| 1227 | data.m_stride = -bytesPerRow; |
| 1228 | |
| 1229 | char *bits = (char *)ds.dsBm.bmBits; |
| 1230 | if ( h > 1 ) |
| 1231 | { |
| 1232 | bits += (h - 1)*bytesPerRow; |
| 1233 | } |
| 1234 | |
| 1235 | return bits; |
| 1236 | #else |
| 1237 | return NULL; |
| 1238 | #endif |
| 1239 | } |
| 1240 | |
| 1241 | void wxBitmap::UngetRawData(wxPixelDataBase& dataBase) |
| 1242 | { |
| 1243 | #if wxUSE_WXDIB |
| 1244 | if ( !Ok() ) |
| 1245 | return; |
| 1246 | |
| 1247 | // the cast is ugly but we can't do without it and without making this |
| 1248 | // function template (and hence inline) unfortunately |
| 1249 | typedef wxPixelData<wxBitmap, wxAlphaPixelFormat> PixelData; |
| 1250 | PixelData& data = (PixelData &)dataBase; |
| 1251 | |
| 1252 | if ( !data ) |
| 1253 | { |
| 1254 | // invalid data, don't crash -- but don't assert neither as we're |
| 1255 | // called automatically from wxPixelDataBase dtor and so there is no |
| 1256 | // way to prevent this from happening |
| 1257 | return; |
| 1258 | } |
| 1259 | |
| 1260 | if ( GetBitmapData()->m_hasAlpha ) |
| 1261 | { |
| 1262 | // AlphaBlend() wants to have premultiplied source alpha but |
| 1263 | // wxRawBitmap API uses normal, not premultiplied, colours, so adjust |
| 1264 | // them here now |
| 1265 | PixelData::Iterator p(data); |
| 1266 | |
| 1267 | const int w = data.GetWidth(); |
| 1268 | const int h = data.GetHeight(); |
| 1269 | |
| 1270 | for ( int y = 0; y < h; y++ ) |
| 1271 | { |
| 1272 | PixelData::Iterator rowStart = p; |
| 1273 | |
| 1274 | for ( int x = 0; x < w; x++ ) |
| 1275 | { |
| 1276 | const unsigned alpha = p.Alpha(); |
| 1277 | |
| 1278 | p.Red() = (p.Red() * alpha + 127) / 255; |
| 1279 | p.Blue() = (p.Blue() * alpha + 127) / 255; |
| 1280 | p.Green() = (p.Green() * alpha + 127) / 255; |
| 1281 | |
| 1282 | ++p; |
| 1283 | } |
| 1284 | |
| 1285 | p = rowStart; |
| 1286 | p.OffsetY(data, 1); |
| 1287 | } |
| 1288 | } |
| 1289 | |
| 1290 | // if we're a DDB we need to convert DIB back to DDB now to make the |
| 1291 | // changes made via raw bitmap access effective |
| 1292 | if ( !GetBitmapData()->m_isDIB ) |
| 1293 | { |
| 1294 | wxDIB *dib = GetBitmapData()->m_dib; |
| 1295 | GetBitmapData()->m_dib = NULL; |
| 1296 | |
| 1297 | // TODO: convert |
| 1298 | |
| 1299 | delete dib; |
| 1300 | } |
| 1301 | #endif // wxUSE_WXDIB |
| 1302 | } |
| 1303 | #endif // #ifdef wxHAVE_RAW_BITMAP |
| 1304 | |
| 1305 | // ---------------------------------------------------------------------------- |
| 1306 | // wxMask |
| 1307 | // ---------------------------------------------------------------------------- |
| 1308 | |
| 1309 | wxMask::wxMask() |
| 1310 | { |
| 1311 | m_maskBitmap = 0; |
| 1312 | } |
| 1313 | |
| 1314 | // Construct a mask from a bitmap and a colour indicating |
| 1315 | // the transparent area |
| 1316 | wxMask::wxMask(const wxBitmap& bitmap, const wxColour& colour) |
| 1317 | { |
| 1318 | m_maskBitmap = 0; |
| 1319 | Create(bitmap, colour); |
| 1320 | } |
| 1321 | |
| 1322 | // Construct a mask from a bitmap and a palette index indicating |
| 1323 | // the transparent area |
| 1324 | wxMask::wxMask(const wxBitmap& bitmap, int paletteIndex) |
| 1325 | { |
| 1326 | m_maskBitmap = 0; |
| 1327 | Create(bitmap, paletteIndex); |
| 1328 | } |
| 1329 | |
| 1330 | // Construct a mask from a mono bitmap (copies the bitmap). |
| 1331 | wxMask::wxMask(const wxBitmap& bitmap) |
| 1332 | { |
| 1333 | m_maskBitmap = 0; |
| 1334 | Create(bitmap); |
| 1335 | } |
| 1336 | |
| 1337 | wxMask::~wxMask() |
| 1338 | { |
| 1339 | if ( m_maskBitmap ) |
| 1340 | ::DeleteObject((HBITMAP) m_maskBitmap); |
| 1341 | } |
| 1342 | |
| 1343 | // Create a mask from a mono bitmap (copies the bitmap). |
| 1344 | bool wxMask::Create(const wxBitmap& bitmap) |
| 1345 | { |
| 1346 | #ifndef __WXMICROWIN__ |
| 1347 | wxCHECK_MSG( bitmap.Ok() && bitmap.GetDepth() == 1, false, |
| 1348 | _T("can't create mask from invalid or not monochrome bitmap") ); |
| 1349 | |
| 1350 | if ( m_maskBitmap ) |
| 1351 | { |
| 1352 | ::DeleteObject((HBITMAP) m_maskBitmap); |
| 1353 | m_maskBitmap = 0; |
| 1354 | } |
| 1355 | |
| 1356 | m_maskBitmap = (WXHBITMAP) CreateBitmap( |
| 1357 | bitmap.GetWidth(), |
| 1358 | bitmap.GetHeight(), |
| 1359 | 1, 1, 0 |
| 1360 | ); |
| 1361 | HDC srcDC = CreateCompatibleDC(0); |
| 1362 | SelectObject(srcDC, (HBITMAP) bitmap.GetHBITMAP()); |
| 1363 | HDC destDC = CreateCompatibleDC(0); |
| 1364 | SelectObject(destDC, (HBITMAP) m_maskBitmap); |
| 1365 | BitBlt(destDC, 0, 0, bitmap.GetWidth(), bitmap.GetHeight(), srcDC, 0, 0, SRCCOPY); |
| 1366 | SelectObject(srcDC, 0); |
| 1367 | DeleteDC(srcDC); |
| 1368 | SelectObject(destDC, 0); |
| 1369 | DeleteDC(destDC); |
| 1370 | return true; |
| 1371 | #else |
| 1372 | wxUnusedVar(bitmap); |
| 1373 | return false; |
| 1374 | #endif |
| 1375 | } |
| 1376 | |
| 1377 | // Create a mask from a bitmap and a palette index indicating |
| 1378 | // the transparent area |
| 1379 | bool wxMask::Create(const wxBitmap& bitmap, int paletteIndex) |
| 1380 | { |
| 1381 | if ( m_maskBitmap ) |
| 1382 | { |
| 1383 | ::DeleteObject((HBITMAP) m_maskBitmap); |
| 1384 | m_maskBitmap = 0; |
| 1385 | } |
| 1386 | |
| 1387 | #if wxUSE_PALETTE |
| 1388 | if (bitmap.Ok() && bitmap.GetPalette()->Ok()) |
| 1389 | { |
| 1390 | unsigned char red, green, blue; |
| 1391 | if (bitmap.GetPalette()->GetRGB(paletteIndex, &red, &green, &blue)) |
| 1392 | { |
| 1393 | wxColour transparentColour(red, green, blue); |
| 1394 | return Create(bitmap, transparentColour); |
| 1395 | } |
| 1396 | } |
| 1397 | #endif // wxUSE_PALETTE |
| 1398 | |
| 1399 | return false; |
| 1400 | } |
| 1401 | |
| 1402 | // Create a mask from a bitmap and a colour indicating |
| 1403 | // the transparent area |
| 1404 | bool wxMask::Create(const wxBitmap& bitmap, const wxColour& colour) |
| 1405 | { |
| 1406 | #ifndef __WXMICROWIN__ |
| 1407 | wxCHECK_MSG( bitmap.Ok(), false, _T("invalid bitmap in wxMask::Create") ); |
| 1408 | |
| 1409 | if ( m_maskBitmap ) |
| 1410 | { |
| 1411 | ::DeleteObject((HBITMAP) m_maskBitmap); |
| 1412 | m_maskBitmap = 0; |
| 1413 | } |
| 1414 | |
| 1415 | int width = bitmap.GetWidth(), |
| 1416 | height = bitmap.GetHeight(); |
| 1417 | |
| 1418 | // scan the bitmap for the transparent colour and set the corresponding |
| 1419 | // pixels in the mask to BLACK and the rest to WHITE |
| 1420 | COLORREF maskColour = wxColourToPalRGB(colour); |
| 1421 | m_maskBitmap = (WXHBITMAP)::CreateBitmap(width, height, 1, 1, 0); |
| 1422 | |
| 1423 | HDC srcDC = ::CreateCompatibleDC(NULL); |
| 1424 | HDC destDC = ::CreateCompatibleDC(NULL); |
| 1425 | if ( !srcDC || !destDC ) |
| 1426 | { |
| 1427 | wxLogLastError(wxT("CreateCompatibleDC")); |
| 1428 | } |
| 1429 | |
| 1430 | bool ok = true; |
| 1431 | |
| 1432 | // SelectObject() will fail |
| 1433 | wxASSERT_MSG( !bitmap.GetSelectedInto(), |
| 1434 | _T("bitmap can't be selected in another DC") ); |
| 1435 | |
| 1436 | HGDIOBJ hbmpSrcOld = ::SelectObject(srcDC, GetHbitmapOf(bitmap)); |
| 1437 | if ( !hbmpSrcOld ) |
| 1438 | { |
| 1439 | wxLogLastError(wxT("SelectObject")); |
| 1440 | |
| 1441 | ok = false; |
| 1442 | } |
| 1443 | |
| 1444 | HGDIOBJ hbmpDstOld = ::SelectObject(destDC, (HBITMAP)m_maskBitmap); |
| 1445 | if ( !hbmpDstOld ) |
| 1446 | { |
| 1447 | wxLogLastError(wxT("SelectObject")); |
| 1448 | |
| 1449 | ok = false; |
| 1450 | } |
| 1451 | |
| 1452 | if ( ok ) |
| 1453 | { |
| 1454 | // this will create a monochrome bitmap with 0 points for the pixels |
| 1455 | // which have the same value as the background colour and 1 for the |
| 1456 | // others |
| 1457 | ::SetBkColor(srcDC, maskColour); |
| 1458 | ::BitBlt(destDC, 0, 0, width, height, srcDC, 0, 0, NOTSRCCOPY); |
| 1459 | } |
| 1460 | |
| 1461 | ::SelectObject(srcDC, hbmpSrcOld); |
| 1462 | ::DeleteDC(srcDC); |
| 1463 | ::SelectObject(destDC, hbmpDstOld); |
| 1464 | ::DeleteDC(destDC); |
| 1465 | |
| 1466 | return ok; |
| 1467 | #else // __WXMICROWIN__ |
| 1468 | wxUnusedVar(bitmap); |
| 1469 | wxUnusedVar(colour); |
| 1470 | return false; |
| 1471 | #endif // __WXMICROWIN__/!__WXMICROWIN__ |
| 1472 | } |
| 1473 | |
| 1474 | // ---------------------------------------------------------------------------- |
| 1475 | // wxBitmapHandler |
| 1476 | // ---------------------------------------------------------------------------- |
| 1477 | |
| 1478 | bool wxBitmapHandler::Create(wxGDIImage *image, |
| 1479 | void *data, |
| 1480 | long flags, |
| 1481 | int width, int height, int depth) |
| 1482 | { |
| 1483 | wxBitmap *bitmap = wxDynamicCast(image, wxBitmap); |
| 1484 | |
| 1485 | return bitmap ? Create(bitmap, data, flags, width, height, depth) : false; |
| 1486 | } |
| 1487 | |
| 1488 | bool wxBitmapHandler::Load(wxGDIImage *image, |
| 1489 | const wxString& name, |
| 1490 | long flags, |
| 1491 | int width, int height) |
| 1492 | { |
| 1493 | wxBitmap *bitmap = wxDynamicCast(image, wxBitmap); |
| 1494 | |
| 1495 | return bitmap ? LoadFile(bitmap, name, flags, width, height) : false; |
| 1496 | } |
| 1497 | |
| 1498 | bool wxBitmapHandler::Save(wxGDIImage *image, |
| 1499 | const wxString& name, |
| 1500 | int type) |
| 1501 | { |
| 1502 | wxBitmap *bitmap = wxDynamicCast(image, wxBitmap); |
| 1503 | |
| 1504 | return bitmap ? SaveFile(bitmap, name, type) : false; |
| 1505 | } |
| 1506 | |
| 1507 | bool wxBitmapHandler::Create(wxBitmap *WXUNUSED(bitmap), |
| 1508 | void *WXUNUSED(data), |
| 1509 | long WXUNUSED(type), |
| 1510 | int WXUNUSED(width), |
| 1511 | int WXUNUSED(height), |
| 1512 | int WXUNUSED(depth)) |
| 1513 | { |
| 1514 | return false; |
| 1515 | } |
| 1516 | |
| 1517 | bool wxBitmapHandler::LoadFile(wxBitmap *WXUNUSED(bitmap), |
| 1518 | const wxString& WXUNUSED(name), |
| 1519 | long WXUNUSED(type), |
| 1520 | int WXUNUSED(desiredWidth), |
| 1521 | int WXUNUSED(desiredHeight)) |
| 1522 | { |
| 1523 | return false; |
| 1524 | } |
| 1525 | |
| 1526 | bool wxBitmapHandler::SaveFile(wxBitmap *WXUNUSED(bitmap), |
| 1527 | const wxString& WXUNUSED(name), |
| 1528 | int WXUNUSED(type), |
| 1529 | const wxPalette *WXUNUSED(palette)) |
| 1530 | { |
| 1531 | return false; |
| 1532 | } |
| 1533 | |
| 1534 | // ---------------------------------------------------------------------------- |
| 1535 | // DIB functions |
| 1536 | // ---------------------------------------------------------------------------- |
| 1537 | |
| 1538 | #ifndef __WXMICROWIN__ |
| 1539 | bool wxCreateDIB(long xSize, long ySize, long bitsPerPixel, |
| 1540 | HPALETTE hPal, LPBITMAPINFO* lpDIBHeader) |
| 1541 | { |
| 1542 | unsigned long i, headerSize; |
| 1543 | |
| 1544 | // Allocate space for a DIB header |
| 1545 | headerSize = (sizeof(BITMAPINFOHEADER) + (256 * sizeof(PALETTEENTRY))); |
| 1546 | LPBITMAPINFO lpDIBheader = (BITMAPINFO *) malloc(headerSize); |
| 1547 | LPPALETTEENTRY lpPe = (PALETTEENTRY *)((BYTE*)lpDIBheader + sizeof(BITMAPINFOHEADER)); |
| 1548 | |
| 1549 | GetPaletteEntries(hPal, 0, 256, lpPe); |
| 1550 | |
| 1551 | memset(lpDIBheader, 0x00, sizeof(BITMAPINFOHEADER)); |
| 1552 | |
| 1553 | // Fill in the static parts of the DIB header |
| 1554 | lpDIBheader->bmiHeader.biSize = sizeof(BITMAPINFOHEADER); |
| 1555 | lpDIBheader->bmiHeader.biWidth = xSize; |
| 1556 | lpDIBheader->bmiHeader.biHeight = ySize; |
| 1557 | lpDIBheader->bmiHeader.biPlanes = 1; |
| 1558 | |
| 1559 | // this value must be 1, 4, 8 or 24 so PixelDepth can only be |
| 1560 | lpDIBheader->bmiHeader.biBitCount = (WORD)(bitsPerPixel); |
| 1561 | lpDIBheader->bmiHeader.biCompression = BI_RGB; |
| 1562 | lpDIBheader->bmiHeader.biSizeImage = xSize * abs(ySize) * bitsPerPixel >> 3; |
| 1563 | lpDIBheader->bmiHeader.biClrUsed = 256; |
| 1564 | |
| 1565 | |
| 1566 | // Initialize the DIB palette |
| 1567 | for (i = 0; i < 256; i++) { |
| 1568 | lpDIBheader->bmiColors[i].rgbReserved = lpPe[i].peFlags; |
| 1569 | lpDIBheader->bmiColors[i].rgbRed = lpPe[i].peRed; |
| 1570 | lpDIBheader->bmiColors[i].rgbGreen = lpPe[i].peGreen; |
| 1571 | lpDIBheader->bmiColors[i].rgbBlue = lpPe[i].peBlue; |
| 1572 | } |
| 1573 | |
| 1574 | *lpDIBHeader = lpDIBheader; |
| 1575 | |
| 1576 | return true; |
| 1577 | } |
| 1578 | |
| 1579 | void wxFreeDIB(LPBITMAPINFO lpDIBHeader) |
| 1580 | { |
| 1581 | free(lpDIBHeader); |
| 1582 | } |
| 1583 | #endif |
| 1584 | |
| 1585 | // ---------------------------------------------------------------------------- |
| 1586 | // global helper functions implemented here |
| 1587 | // ---------------------------------------------------------------------------- |
| 1588 | |
| 1589 | // helper of wxBitmapToHICON/HCURSOR |
| 1590 | static |
| 1591 | HICON wxBitmapToIconOrCursor(const wxBitmap& bmp, |
| 1592 | bool iconWanted, |
| 1593 | int hotSpotX, |
| 1594 | int hotSpotY) |
| 1595 | { |
| 1596 | if ( !bmp.Ok() ) |
| 1597 | { |
| 1598 | // we can't create an icon/cursor form nothing |
| 1599 | return 0; |
| 1600 | } |
| 1601 | |
| 1602 | wxMask *mask = bmp.GetMask(); |
| 1603 | if ( !mask ) |
| 1604 | { |
| 1605 | // we must have a mask for an icon, so even if it's probably incorrect, |
| 1606 | // do create it (grey is the "standard" transparent colour) |
| 1607 | mask = new wxMask(bmp, *wxLIGHT_GREY); |
| 1608 | } |
| 1609 | |
| 1610 | ICONINFO iconInfo; |
| 1611 | wxZeroMemory(iconInfo); |
| 1612 | iconInfo.fIcon = iconWanted; // do we want an icon or a cursor? |
| 1613 | if ( !iconWanted ) |
| 1614 | { |
| 1615 | iconInfo.xHotspot = hotSpotX; |
| 1616 | iconInfo.yHotspot = hotSpotY; |
| 1617 | } |
| 1618 | |
| 1619 | iconInfo.hbmMask = wxInvertMask((HBITMAP)mask->GetMaskBitmap()); |
| 1620 | iconInfo.hbmColor = GetHbitmapOf(bmp); |
| 1621 | |
| 1622 | // black out the transparent area to preserve background colour, because |
| 1623 | // Windows blits the original bitmap using SRCINVERT (XOR) after applying |
| 1624 | // the mask to the dest rect. |
| 1625 | { |
| 1626 | MemoryHDC dcSrc, dcDst; |
| 1627 | SelectInHDC selectMask(dcSrc, (HBITMAP)mask->GetMaskBitmap()), |
| 1628 | selectBitmap(dcDst, iconInfo.hbmColor); |
| 1629 | |
| 1630 | if ( !::BitBlt(dcDst, 0, 0, bmp.GetWidth(), bmp.GetHeight(), |
| 1631 | dcSrc, 0, 0, SRCAND) ) |
| 1632 | { |
| 1633 | wxLogLastError(_T("BitBlt")); |
| 1634 | } |
| 1635 | } |
| 1636 | |
| 1637 | HICON hicon = ::CreateIconIndirect(&iconInfo); |
| 1638 | |
| 1639 | if ( !bmp.GetMask() ) |
| 1640 | { |
| 1641 | // we created the mask, now delete it |
| 1642 | delete mask; |
| 1643 | } |
| 1644 | |
| 1645 | // delete the inverted mask bitmap we created as well |
| 1646 | ::DeleteObject(iconInfo.hbmMask); |
| 1647 | |
| 1648 | return hicon; |
| 1649 | } |
| 1650 | |
| 1651 | HICON wxBitmapToHICON(const wxBitmap& bmp) |
| 1652 | { |
| 1653 | return wxBitmapToIconOrCursor(bmp, true, 0, 0); |
| 1654 | } |
| 1655 | |
| 1656 | HCURSOR wxBitmapToHCURSOR(const wxBitmap& bmp, int hotSpotX, int hotSpotY) |
| 1657 | { |
| 1658 | return (HCURSOR)wxBitmapToIconOrCursor(bmp, false, hotSpotX, hotSpotY); |
| 1659 | } |
| 1660 | |
| 1661 | HBITMAP wxInvertMask(HBITMAP hbmpMask, int w, int h) |
| 1662 | { |
| 1663 | #ifndef __WXMICROWIN__ |
| 1664 | wxCHECK_MSG( hbmpMask, 0, _T("invalid bitmap in wxInvertMask") ); |
| 1665 | |
| 1666 | // get width/height from the bitmap if not given |
| 1667 | if ( !w || !h ) |
| 1668 | { |
| 1669 | BITMAP bm; |
| 1670 | ::GetObject(hbmpMask, sizeof(BITMAP), (LPVOID)&bm); |
| 1671 | w = bm.bmWidth; |
| 1672 | h = bm.bmHeight; |
| 1673 | } |
| 1674 | |
| 1675 | HDC hdcSrc = ::CreateCompatibleDC(NULL); |
| 1676 | HDC hdcDst = ::CreateCompatibleDC(NULL); |
| 1677 | if ( !hdcSrc || !hdcDst ) |
| 1678 | { |
| 1679 | wxLogLastError(wxT("CreateCompatibleDC")); |
| 1680 | } |
| 1681 | |
| 1682 | HBITMAP hbmpInvMask = ::CreateBitmap(w, h, 1, 1, 0); |
| 1683 | if ( !hbmpInvMask ) |
| 1684 | { |
| 1685 | wxLogLastError(wxT("CreateBitmap")); |
| 1686 | } |
| 1687 | |
| 1688 | HGDIOBJ srcTmp = ::SelectObject(hdcSrc, hbmpMask); |
| 1689 | HGDIOBJ dstTmp = ::SelectObject(hdcDst, hbmpInvMask); |
| 1690 | if ( !::BitBlt(hdcDst, 0, 0, w, h, |
| 1691 | hdcSrc, 0, 0, |
| 1692 | NOTSRCCOPY) ) |
| 1693 | { |
| 1694 | wxLogLastError(wxT("BitBlt")); |
| 1695 | } |
| 1696 | |
| 1697 | // Deselect objects |
| 1698 | SelectObject(hdcSrc,srcTmp); |
| 1699 | SelectObject(hdcDst,dstTmp); |
| 1700 | |
| 1701 | ::DeleteDC(hdcSrc); |
| 1702 | ::DeleteDC(hdcDst); |
| 1703 | |
| 1704 | return hbmpInvMask; |
| 1705 | #else |
| 1706 | return 0; |
| 1707 | #endif |
| 1708 | } |