| 1 | /////////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: msw/gdiimage.cpp |
| 3 | // Purpose: wxGDIImage implementation |
| 4 | // Author: Vadim Zeitlin |
| 5 | // Modified by: |
| 6 | // Created: 20.11.99 |
| 7 | // RCS-ID: $Id$ |
| 8 | // Copyright: (c) 1999 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr> |
| 9 | // Licence: wxWindows license |
| 10 | /////////////////////////////////////////////////////////////////////////////// |
| 11 | |
| 12 | // ============================================================================ |
| 13 | // declarations |
| 14 | // ============================================================================ |
| 15 | |
| 16 | // ---------------------------------------------------------------------------- |
| 17 | // headers |
| 18 | // ---------------------------------------------------------------------------- |
| 19 | |
| 20 | #ifdef __GNUG__ |
| 21 | #pragma implementation "gdiimage.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 "wx/string.h" |
| 33 | #include "wx/log.h" |
| 34 | #endif // WX_PRECOMP |
| 35 | |
| 36 | #include "wx/msw/private.h" |
| 37 | |
| 38 | #include "wx/app.h" |
| 39 | |
| 40 | #include "wx/msw/dib.h" |
| 41 | #include "wx/msw/bitmap.h" |
| 42 | #include "wx/msw/gdiimage.h" |
| 43 | #include "wx/bitmap.h" |
| 44 | |
| 45 | #if wxUSE_XPM_IN_MSW |
| 46 | # include "wx/xpmhand.h" |
| 47 | #endif // wxUSE_XPM_IN_MSW |
| 48 | |
| 49 | #ifdef __WIN16__ |
| 50 | # include "wx/msw/curico.h" |
| 51 | #endif // __WIN16__ |
| 52 | |
| 53 | // ---------------------------------------------------------------------------- |
| 54 | // private classes |
| 55 | // ---------------------------------------------------------------------------- |
| 56 | |
| 57 | // all image handlers are declared/defined in this file because the outside |
| 58 | // world doesn't have to know about them (but only about wxBITMAP_TYPE_XXX ids) |
| 59 | |
| 60 | class WXDLLEXPORT wxBMPFileHandler : public wxBitmapHandler |
| 61 | { |
| 62 | public: |
| 63 | wxBMPFileHandler() : wxBitmapHandler(_T("Windows bitmap file"), _T("bmp"), |
| 64 | wxBITMAP_TYPE_BMP) |
| 65 | { |
| 66 | } |
| 67 | |
| 68 | virtual bool LoadFile(wxBitmap *bitmap, |
| 69 | const wxString& name, long flags, |
| 70 | int desiredWidth, int desiredHeight); |
| 71 | virtual bool SaveFile(wxBitmap *bitmap, |
| 72 | const wxString& name, int type, |
| 73 | const wxPalette *palette = NULL); |
| 74 | |
| 75 | private: |
| 76 | DECLARE_DYNAMIC_CLASS(wxBMPFileHandler) |
| 77 | }; |
| 78 | |
| 79 | class WXDLLEXPORT wxBMPResourceHandler: public wxBitmapHandler |
| 80 | { |
| 81 | public: |
| 82 | wxBMPResourceHandler() : wxBitmapHandler(_T("Windows bitmap resource"), |
| 83 | wxEmptyString, |
| 84 | wxBITMAP_TYPE_BMP_RESOURCE) |
| 85 | { |
| 86 | } |
| 87 | |
| 88 | virtual bool LoadFile(wxBitmap *bitmap, |
| 89 | const wxString& name, long flags, |
| 90 | int desiredWidth, int desiredHeight); |
| 91 | |
| 92 | private: |
| 93 | DECLARE_DYNAMIC_CLASS(wxBMPResourceHandler) |
| 94 | }; |
| 95 | |
| 96 | class WXDLLEXPORT wxIconHandler : public wxGDIImageHandler |
| 97 | { |
| 98 | public: |
| 99 | wxIconHandler(const wxString& name, const wxString& ext, long type) |
| 100 | : wxGDIImageHandler(name, ext, type) |
| 101 | { |
| 102 | } |
| 103 | |
| 104 | // creating and saving icons is not supported |
| 105 | virtual bool Create(wxGDIImage *WXUNUSED(image), |
| 106 | void *WXUNUSED(data), |
| 107 | long WXUNUSED(flags), |
| 108 | int WXUNUSED(width), |
| 109 | int WXUNUSED(height), |
| 110 | int WXUNUSED(depth) = 1) |
| 111 | { |
| 112 | return FALSE; |
| 113 | } |
| 114 | |
| 115 | virtual bool Save(wxGDIImage *WXUNUSED(image), |
| 116 | const wxString& WXUNUSED(name), |
| 117 | int WXUNUSED(type)) |
| 118 | { |
| 119 | return FALSE; |
| 120 | } |
| 121 | |
| 122 | virtual bool Load(wxGDIImage *image, |
| 123 | const wxString& name, |
| 124 | long flags, |
| 125 | int desiredWidth, int desiredHeight) |
| 126 | { |
| 127 | wxIcon *icon = wxDynamicCast(image, wxIcon); |
| 128 | wxCHECK_MSG( icon, FALSE, _T("wxIconHandler only works with icons") ); |
| 129 | |
| 130 | return LoadIcon(icon, name, flags, desiredWidth, desiredHeight); |
| 131 | } |
| 132 | |
| 133 | protected: |
| 134 | virtual bool LoadIcon(wxIcon *icon, |
| 135 | const wxString& name, long flags, |
| 136 | int desiredWidth = -1, int desiredHeight = -1) = 0; |
| 137 | }; |
| 138 | |
| 139 | class WXDLLEXPORT wxICOFileHandler : public wxIconHandler |
| 140 | { |
| 141 | public: |
| 142 | wxICOFileHandler() : wxIconHandler(_T("ICO icon file"), |
| 143 | _T("ico"), |
| 144 | wxBITMAP_TYPE_ICO) |
| 145 | { |
| 146 | } |
| 147 | |
| 148 | virtual bool LoadIcon(wxIcon *icon, |
| 149 | const wxString& name, long flags, |
| 150 | int desiredWidth = -1, int desiredHeight = -1); |
| 151 | |
| 152 | private: |
| 153 | DECLARE_DYNAMIC_CLASS(wxICOFileHandler) |
| 154 | }; |
| 155 | |
| 156 | class WXDLLEXPORT wxICOResourceHandler: public wxIconHandler |
| 157 | { |
| 158 | public: |
| 159 | wxICOResourceHandler() : wxIconHandler(_T("ICO resource"), |
| 160 | _T("ico"), |
| 161 | wxBITMAP_TYPE_ICO_RESOURCE) |
| 162 | { |
| 163 | } |
| 164 | |
| 165 | virtual bool LoadIcon(wxIcon *icon, |
| 166 | const wxString& name, long flags, |
| 167 | int desiredWidth = -1, int desiredHeight = -1); |
| 168 | |
| 169 | private: |
| 170 | DECLARE_DYNAMIC_CLASS(wxICOResourceHandler) |
| 171 | }; |
| 172 | |
| 173 | // ---------------------------------------------------------------------------- |
| 174 | // wxWin macros |
| 175 | // ---------------------------------------------------------------------------- |
| 176 | |
| 177 | IMPLEMENT_DYNAMIC_CLASS(wxBMPFileHandler, wxBitmapHandler) |
| 178 | IMPLEMENT_DYNAMIC_CLASS(wxBMPResourceHandler, wxBitmapHandler) |
| 179 | IMPLEMENT_DYNAMIC_CLASS(wxICOFileHandler, wxGDIImageHandler) |
| 180 | IMPLEMENT_DYNAMIC_CLASS(wxICOResourceHandler, wxGDIImageHandler) |
| 181 | |
| 182 | // ---------------------------------------------------------------------------- |
| 183 | // private functions |
| 184 | // ---------------------------------------------------------------------------- |
| 185 | |
| 186 | static wxSize GetHiconSize(HICON hicon); |
| 187 | |
| 188 | // ============================================================================ |
| 189 | // implementation |
| 190 | // ============================================================================ |
| 191 | |
| 192 | wxList wxGDIImage::ms_handlers; |
| 193 | |
| 194 | // ---------------------------------------------------------------------------- |
| 195 | // wxGDIImage functions forwarded to wxGDIImageRefData |
| 196 | // ---------------------------------------------------------------------------- |
| 197 | |
| 198 | bool wxGDIImage::FreeResource(bool WXUNUSED(force)) |
| 199 | { |
| 200 | if ( !IsNull() ) |
| 201 | { |
| 202 | GetGDIImageData()->Free(); |
| 203 | GetGDIImageData()->m_handle = 0; |
| 204 | } |
| 205 | |
| 206 | return TRUE; |
| 207 | } |
| 208 | |
| 209 | WXHANDLE wxGDIImage::GetResourceHandle() |
| 210 | { |
| 211 | return GetHandle(); |
| 212 | } |
| 213 | |
| 214 | // ---------------------------------------------------------------------------- |
| 215 | // wxGDIImage handler stuff |
| 216 | // ---------------------------------------------------------------------------- |
| 217 | |
| 218 | void wxGDIImage::AddHandler(wxGDIImageHandler *handler) |
| 219 | { |
| 220 | ms_handlers.Append(handler); |
| 221 | } |
| 222 | |
| 223 | void wxGDIImage::InsertHandler(wxGDIImageHandler *handler) |
| 224 | { |
| 225 | ms_handlers.Insert(handler); |
| 226 | } |
| 227 | |
| 228 | bool wxGDIImage::RemoveHandler(const wxString& name) |
| 229 | { |
| 230 | wxGDIImageHandler *handler = FindHandler(name); |
| 231 | if ( handler ) |
| 232 | { |
| 233 | ms_handlers.DeleteObject(handler); |
| 234 | return TRUE; |
| 235 | } |
| 236 | else |
| 237 | return FALSE; |
| 238 | } |
| 239 | |
| 240 | wxGDIImageHandler *wxGDIImage::FindHandler(const wxString& name) |
| 241 | { |
| 242 | wxNode *node = ms_handlers.First(); |
| 243 | while ( node ) |
| 244 | { |
| 245 | wxGDIImageHandler *handler = (wxGDIImageHandler *)node->Data(); |
| 246 | if ( handler->GetName() == name ) |
| 247 | return handler; |
| 248 | node = node->Next(); |
| 249 | } |
| 250 | |
| 251 | return NULL; |
| 252 | } |
| 253 | |
| 254 | wxGDIImageHandler *wxGDIImage::FindHandler(const wxString& extension, |
| 255 | long type) |
| 256 | { |
| 257 | wxNode *node = ms_handlers.First(); |
| 258 | while ( node ) |
| 259 | { |
| 260 | wxGDIImageHandler *handler = (wxGDIImageHandler *)node->Data(); |
| 261 | if ( (handler->GetExtension() = extension) && |
| 262 | (type == -1 || handler->GetType() == type) ) |
| 263 | { |
| 264 | return handler; |
| 265 | } |
| 266 | |
| 267 | node = node->Next(); |
| 268 | } |
| 269 | return NULL; |
| 270 | } |
| 271 | |
| 272 | wxGDIImageHandler *wxGDIImage::FindHandler(long type) |
| 273 | { |
| 274 | wxNode *node = ms_handlers.First(); |
| 275 | while ( node ) |
| 276 | { |
| 277 | wxGDIImageHandler *handler = (wxGDIImageHandler *)node->Data(); |
| 278 | if ( handler->GetType() == type ) |
| 279 | return handler; |
| 280 | |
| 281 | node = node->Next(); |
| 282 | } |
| 283 | |
| 284 | return NULL; |
| 285 | } |
| 286 | |
| 287 | void wxGDIImage::CleanUpHandlers() |
| 288 | { |
| 289 | wxNode *node = ms_handlers.First(); |
| 290 | while ( node ) |
| 291 | { |
| 292 | wxGDIImageHandler *handler = (wxGDIImageHandler *)node->Data(); |
| 293 | wxNode *next = node->Next(); |
| 294 | delete handler; |
| 295 | delete node; |
| 296 | node = next; |
| 297 | } |
| 298 | } |
| 299 | |
| 300 | void wxGDIImage::InitStandardHandlers() |
| 301 | { |
| 302 | AddHandler(new wxBMPResourceHandler); |
| 303 | AddHandler(new wxBMPFileHandler); |
| 304 | |
| 305 | // GRG: Add these handlers by default if XPM support is enabled |
| 306 | |
| 307 | #if wxUSE_XPM_IN_MSW |
| 308 | AddHandler(new wxXPMFileHandler); |
| 309 | AddHandler(new wxXPMDataHandler); |
| 310 | #endif // wxUSE_XPM_IN_MSW |
| 311 | |
| 312 | AddHandler(new wxICOResourceHandler); |
| 313 | AddHandler(new wxICOFileHandler); |
| 314 | } |
| 315 | |
| 316 | // ---------------------------------------------------------------------------- |
| 317 | // wxBitmap handlers |
| 318 | // ---------------------------------------------------------------------------- |
| 319 | |
| 320 | bool wxBMPResourceHandler::LoadFile(wxBitmap *bitmap, |
| 321 | const wxString& name, long WXUNUSED(flags), |
| 322 | int WXUNUSED(desiredWidth), |
| 323 | int WXUNUSED(desiredHeight)) |
| 324 | { |
| 325 | // TODO: load colourmap. |
| 326 | bitmap->SetHBITMAP((WXHBITMAP)::LoadBitmap(wxGetInstance(), name)); |
| 327 | |
| 328 | wxBitmapRefData *data = bitmap->GetBitmapData(); |
| 329 | if ( bitmap->Ok() ) |
| 330 | { |
| 331 | BITMAP bm; |
| 332 | if ( !::GetObject(GetHbitmapOf(*bitmap), sizeof(BITMAP), (LPSTR) &bm) ) |
| 333 | { |
| 334 | wxLogLastError(wxT("GetObject(HBITMAP)")); |
| 335 | } |
| 336 | |
| 337 | data->m_width = bm.bmWidth; |
| 338 | data->m_height = bm.bmHeight; |
| 339 | data->m_depth = bm.bmBitsPixel; |
| 340 | } |
| 341 | else |
| 342 | { |
| 343 | // it's probably not found |
| 344 | wxLogError(wxT("Can't load bitmap '%s' from resources! Check .rc file."), |
| 345 | name.c_str()); |
| 346 | } |
| 347 | |
| 348 | return bitmap->Ok(); |
| 349 | } |
| 350 | |
| 351 | bool wxBMPFileHandler::LoadFile(wxBitmap *bitmap, |
| 352 | const wxString& name, long WXUNUSED(flags), |
| 353 | int WXUNUSED(desiredWidth), |
| 354 | int WXUNUSED(desiredHeight)) |
| 355 | { |
| 356 | #if wxUSE_IMAGE_LOADING_IN_MSW |
| 357 | wxPalette *palette = NULL; |
| 358 | bool success = wxLoadIntoBitmap(WXSTRINGCAST name, bitmap, &palette) != 0; |
| 359 | if ( success && palette ) |
| 360 | { |
| 361 | bitmap->SetPalette(*palette); |
| 362 | } |
| 363 | |
| 364 | // it was copied by the bitmap if it was loaded successfully |
| 365 | delete palette; |
| 366 | |
| 367 | return success; |
| 368 | #else |
| 369 | return FALSE; |
| 370 | #endif |
| 371 | } |
| 372 | |
| 373 | bool wxBMPFileHandler::SaveFile(wxBitmap *bitmap, |
| 374 | const wxString& name, |
| 375 | int WXUNUSED(type), |
| 376 | const wxPalette *pal) |
| 377 | { |
| 378 | #if wxUSE_IMAGE_LOADING_IN_MSW |
| 379 | wxPalette *actualPalette = (wxPalette *)pal; |
| 380 | if ( !actualPalette ) |
| 381 | actualPalette = bitmap->GetPalette(); |
| 382 | return wxSaveBitmap(WXSTRINGCAST name, bitmap, actualPalette) != 0; |
| 383 | #else |
| 384 | return FALSE; |
| 385 | #endif |
| 386 | } |
| 387 | |
| 388 | // ---------------------------------------------------------------------------- |
| 389 | // wxIcon handlers |
| 390 | // ---------------------------------------------------------------------------- |
| 391 | |
| 392 | bool wxICOFileHandler::LoadIcon(wxIcon *icon, |
| 393 | const wxString& name, |
| 394 | long flags, |
| 395 | int desiredWidth, int desiredHeight) |
| 396 | { |
| 397 | #if wxUSE_RESOURCE_LOADING_IN_MSW |
| 398 | icon->UnRef(); |
| 399 | |
| 400 | // actual size |
| 401 | wxSize size; |
| 402 | |
| 403 | #ifdef __WIN32__ |
| 404 | HICON hicon = NULL; |
| 405 | |
| 406 | // were we asked for a large icon? |
| 407 | if ( desiredWidth == ::GetSystemMetrics(SM_CXICON) && |
| 408 | desiredHeight == ::GetSystemMetrics(SM_CYICON) ) |
| 409 | { |
| 410 | // get the first large icon from file |
| 411 | if ( !::ExtractIconEx(name, 0, &hicon, NULL, 1) ) |
| 412 | { |
| 413 | // it is not an error, but it might still be useful to be informed |
| 414 | // about it optionally |
| 415 | wxLogTrace(_T("iconload"), |
| 416 | _T("No large icons found in the file '%s'."), |
| 417 | name.c_str()); |
| 418 | } |
| 419 | } |
| 420 | else if ( desiredWidth == ::GetSystemMetrics(SM_CXSMICON) && |
| 421 | desiredHeight == ::GetSystemMetrics(SM_CYSMICON) ) |
| 422 | { |
| 423 | // get the first small icon from file |
| 424 | if ( !::ExtractIconEx(name, 0, NULL, &hicon, 1) ) |
| 425 | { |
| 426 | wxLogTrace(_T("iconload"), |
| 427 | _T("No small icons found in the file '%s'."), |
| 428 | name.c_str()); |
| 429 | } |
| 430 | } |
| 431 | //else: not standard size, load below |
| 432 | |
| 433 | if ( !hicon ) |
| 434 | { |
| 435 | // take any (the first one) icon from the file by default |
| 436 | hicon = ::ExtractIcon(wxGetInstance(), name, 0 /* first */); |
| 437 | } |
| 438 | |
| 439 | if ( !hicon ) |
| 440 | { |
| 441 | wxLogSysError(_T("Failed to load icon from the file '%s'"), |
| 442 | name.c_str()); |
| 443 | |
| 444 | return FALSE; |
| 445 | } |
| 446 | |
| 447 | size = GetHiconSize(hicon); |
| 448 | #else // Win16 |
| 449 | HICON hicon = ReadIconFile((wxChar *)name.c_str(), |
| 450 | wxGetInstance(), |
| 451 | &size.x, &size.y); |
| 452 | #endif // Win32/Win16 |
| 453 | |
| 454 | if ( (desiredWidth != -1 && desiredWidth != size.x) || |
| 455 | (desiredHeight != -1 && desiredHeight != size.y) ) |
| 456 | { |
| 457 | wxLogTrace(_T("iconload"), |
| 458 | _T("Returning FALSE from wxICOFileHandler::Load because of the size mismatch: actual (%d, %d), requested (%d, %d)"), |
| 459 | size.x, size.y, |
| 460 | desiredWidth, desiredHeight); |
| 461 | |
| 462 | ::DestroyIcon(hicon); |
| 463 | |
| 464 | return FALSE; |
| 465 | } |
| 466 | |
| 467 | icon->SetHICON((WXHICON)hicon); |
| 468 | icon->SetSize(size.x, size.y); |
| 469 | |
| 470 | return icon->Ok(); |
| 471 | #else |
| 472 | return FALSE; |
| 473 | #endif |
| 474 | } |
| 475 | |
| 476 | bool wxICOResourceHandler::LoadIcon(wxIcon *icon, |
| 477 | const wxString& name, |
| 478 | long flags, |
| 479 | int desiredWidth, int desiredHeight) |
| 480 | { |
| 481 | HICON hicon; |
| 482 | |
| 483 | #if defined(__WIN32__) && !defined(__SC__) |
| 484 | if ( desiredWidth != -1 && desiredHeight != -1 ) |
| 485 | { |
| 486 | hicon = (HICON)::LoadImage(wxGetInstance(), name, IMAGE_ICON, |
| 487 | desiredWidth, desiredHeight, |
| 488 | LR_DEFAULTCOLOR); |
| 489 | } |
| 490 | else |
| 491 | #endif // Win32 |
| 492 | { |
| 493 | hicon = ::LoadIcon(wxGetInstance(), name); |
| 494 | } |
| 495 | |
| 496 | wxSize size = GetHiconSize(hicon); |
| 497 | icon->SetSize(size.x, size.y); |
| 498 | |
| 499 | // Override the found values with desired values |
| 500 | if ( desiredWidth > -1 && desiredHeight > -1 ) |
| 501 | { |
| 502 | icon->SetSize(desiredWidth, desiredHeight); |
| 503 | } |
| 504 | |
| 505 | icon->SetHICON((WXHICON)hicon); |
| 506 | |
| 507 | return icon->Ok(); |
| 508 | } |
| 509 | |
| 510 | // ---------------------------------------------------------------------------- |
| 511 | // private functions |
| 512 | // ---------------------------------------------------------------------------- |
| 513 | |
| 514 | static wxSize GetHiconSize(HICON hicon) |
| 515 | { |
| 516 | wxSize size(32, 32); // default |
| 517 | |
| 518 | #ifdef __WIN32__ |
| 519 | // Win32s doesn't have GetIconInfo function... |
| 520 | if ( hicon && wxGetOsVersion() != wxWIN32S ) |
| 521 | { |
| 522 | ICONINFO info; |
| 523 | if ( !::GetIconInfo(hicon, &info) ) |
| 524 | { |
| 525 | wxLogLastError(wxT("GetIconInfo")); |
| 526 | } |
| 527 | else |
| 528 | { |
| 529 | HBITMAP hbmp = info.hbmMask; |
| 530 | if ( hbmp ) |
| 531 | { |
| 532 | BITMAP bm; |
| 533 | if ( ::GetObject(hbmp, sizeof(BITMAP), (LPSTR) &bm) ) |
| 534 | { |
| 535 | size = wxSize(bm.bmWidth, bm.bmHeight); |
| 536 | } |
| 537 | |
| 538 | ::DeleteObject(info.hbmMask); |
| 539 | } |
| 540 | if ( info.hbmColor ) |
| 541 | ::DeleteObject(info.hbmColor); |
| 542 | } |
| 543 | } |
| 544 | #endif |
| 545 | |
| 546 | return size; |
| 547 | } |