| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: dcclient.cpp |
| 3 | // Purpose: wxClientDC class |
| 4 | // Author: David Webster |
| 5 | // Modified by: |
| 6 | // Created: 09/21/99 |
| 7 | // RCS-ID: $Id$ |
| 8 | // Copyright: (c) David Webster |
| 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 | #include "wx/string.h" |
| 24 | #include "wx/log.h" |
| 25 | #include "wx/window.h" |
| 26 | #include "wx/app.h" |
| 27 | |
| 28 | #include "wx/os2/private.h" |
| 29 | |
| 30 | #include "wx/dcclient.h" |
| 31 | |
| 32 | // ---------------------------------------------------------------------------- |
| 33 | // array/list types |
| 34 | // ---------------------------------------------------------------------------- |
| 35 | |
| 36 | struct WXDLLEXPORT wxPaintDCInfo |
| 37 | { |
| 38 | wxPaintDCInfo( wxWindow* pWin |
| 39 | ,wxDC* pDC |
| 40 | ) |
| 41 | { |
| 42 | m_hWnd = pWin->GetHWND(); |
| 43 | m_hDC = pDC->GetHDC(); |
| 44 | m_nCount = 1; |
| 45 | } |
| 46 | |
| 47 | WXHWND m_hWnd; // window for this DC |
| 48 | WXHDC m_hDC; // the DC handle |
| 49 | size_t m_nCount; // usage count |
| 50 | }; // end of wxPaintDCInfot |
| 51 | |
| 52 | #include "wx/arrimpl.cpp" |
| 53 | |
| 54 | WX_DEFINE_OBJARRAY(wxArrayDCInfo); |
| 55 | |
| 56 | // ---------------------------------------------------------------------------- |
| 57 | // macros |
| 58 | // ---------------------------------------------------------------------------- |
| 59 | |
| 60 | IMPLEMENT_DYNAMIC_CLASS(wxWindowDC, wxDC) |
| 61 | IMPLEMENT_DYNAMIC_CLASS(wxClientDC, wxWindowDC) |
| 62 | IMPLEMENT_DYNAMIC_CLASS(wxPaintDC, wxWindowDC) |
| 63 | |
| 64 | // ---------------------------------------------------------------------------- |
| 65 | // global variables |
| 66 | // ---------------------------------------------------------------------------- |
| 67 | |
| 68 | static RECT g_paintStruct; |
| 69 | |
| 70 | #ifdef __WXDEBUG__ |
| 71 | // a global variable which we check to verify that wxPaintDC are only |
| 72 | // created in resopnse to WM_PAINT message - doing this from elsewhere is a |
| 73 | // common programming error among wxWidgets programmers and might lead to |
| 74 | // very subtle and difficult to debug refresh/repaint bugs. |
| 75 | int g_isPainting = 0; |
| 76 | #endif // __WXDEBUG__ |
| 77 | |
| 78 | // =========================================================================== |
| 79 | // implementation |
| 80 | // =========================================================================== |
| 81 | |
| 82 | // ---------------------------------------------------------------------------- |
| 83 | // wxWindowDC |
| 84 | // ---------------------------------------------------------------------------- |
| 85 | |
| 86 | wxWindowDC::wxWindowDC() |
| 87 | { |
| 88 | m_pCanvas = NULL; |
| 89 | m_PageSize.cx = m_PageSize.cy = 0; |
| 90 | |
| 91 | } |
| 92 | |
| 93 | wxWindowDC::wxWindowDC( |
| 94 | wxWindow* pTheCanvas |
| 95 | ) |
| 96 | { |
| 97 | ERRORID vError; |
| 98 | wxString sError; |
| 99 | int nWidth, nHeight; |
| 100 | |
| 101 | m_pCanvas = pTheCanvas; |
| 102 | DoGetSize(&nWidth, &nHeight); |
| 103 | m_PageSize.cx = nWidth; |
| 104 | m_PageSize.cy = nHeight; |
| 105 | m_hDC = (WXHDC) ::WinOpenWindowDC(GetWinHwnd(pTheCanvas) ); |
| 106 | |
| 107 | // |
| 108 | // default under PM is that Window and Client DC's are the same |
| 109 | // so we offer a separate Presentation Space to use for the |
| 110 | // entire window. Otherwise, calling BeginPaint will just create |
| 111 | // chached-micro client presentation space |
| 112 | // |
| 113 | m_hPS = ::GpiCreatePS( vHabmain |
| 114 | ,m_hDC |
| 115 | ,&m_PageSize |
| 116 | ,PU_PELS | GPIF_LONG | GPIA_ASSOC |
| 117 | ); |
| 118 | if (!m_hPS) |
| 119 | { |
| 120 | vError = ::WinGetLastError(vHabmain); |
| 121 | sError = wxPMErrorToStr(vError); |
| 122 | wxLogError("Unable to create presentation space. Error: %s\n", sError.c_str()); |
| 123 | } |
| 124 | ::GpiAssociate(m_hPS, NULLHANDLE); |
| 125 | ::GpiAssociate(m_hPS, m_hDC); |
| 126 | |
| 127 | // |
| 128 | // Set the wxWidgets color table |
| 129 | // |
| 130 | if (!::GpiCreateLogColorTable( m_hPS |
| 131 | ,0L |
| 132 | ,LCOLF_CONSECRGB |
| 133 | ,0L |
| 134 | ,(LONG)wxTheColourDatabase->m_nSize |
| 135 | ,(PLONG)wxTheColourDatabase->m_palTable |
| 136 | )) |
| 137 | { |
| 138 | vError = ::WinGetLastError(vHabmain); |
| 139 | sError = wxPMErrorToStr(vError); |
| 140 | wxLogError("Unable to set current color table. Error: %s\n", sError.c_str()); |
| 141 | } |
| 142 | ::GpiCreateLogColorTable( m_hPS |
| 143 | ,0L |
| 144 | ,LCOLF_RGB |
| 145 | ,0L |
| 146 | ,0L |
| 147 | ,NULL |
| 148 | ); |
| 149 | ::WinQueryWindowRect( GetWinHwnd(m_pCanvas) |
| 150 | ,&m_vRclPaint |
| 151 | ); |
| 152 | InitDC(); |
| 153 | } // end of wxWindowDC::wxWindowDC |
| 154 | |
| 155 | void wxWindowDC::InitDC() |
| 156 | { |
| 157 | |
| 158 | // |
| 159 | // The background mode is only used for text background and is set in |
| 160 | // DrawText() to OPAQUE as required, otherwise always TRANSPARENT, |
| 161 | // |
| 162 | ::GpiSetBackMix(GetHPS(), BM_LEAVEALONE); |
| 163 | |
| 164 | // |
| 165 | // Default bg colour is pne of the window |
| 166 | // |
| 167 | SetBackground(wxBrush(m_pCanvas->GetBackgroundColour(), wxSOLID)); |
| 168 | |
| 169 | wxColour vColor( wxT("BLACK") ); |
| 170 | m_pen.SetColour(vColor); |
| 171 | |
| 172 | vColor.Set( wxT("WHITE") ); |
| 173 | m_brush.SetColour(vColor); |
| 174 | InitializePalette(); |
| 175 | wxFont* pFont = new wxFont( 12 |
| 176 | ,wxNORMAL |
| 177 | ,wxNORMAL |
| 178 | ,wxBOLD |
| 179 | ); |
| 180 | SetFont(*pFont); |
| 181 | delete pFont; |
| 182 | // |
| 183 | // OS/2 default vertical character allignment needs to match the other OS's |
| 184 | // |
| 185 | ::GpiSetTextAlignment((HPS)GetHPS(), TA_NORMAL_HORIZ, TA_BOTTOM); |
| 186 | |
| 187 | } // end of wxWindowDC::InitDC |
| 188 | |
| 189 | void wxWindowDC::DoGetSize( |
| 190 | int* pnWidth |
| 191 | , int* pnHeight |
| 192 | ) const |
| 193 | { |
| 194 | wxCHECK_RET( m_pCanvas, _T("wxWindowDC without a window?") ); |
| 195 | m_pCanvas->GetSize( pnWidth |
| 196 | ,pnHeight |
| 197 | ); |
| 198 | } // end of wxWindowDC::DoGetSize |
| 199 | |
| 200 | // ---------------------------------------------------------------------------- |
| 201 | // wxClientDC |
| 202 | // ---------------------------------------------------------------------------- |
| 203 | |
| 204 | wxClientDC::wxClientDC() |
| 205 | { |
| 206 | m_pCanvas = NULL; |
| 207 | } |
| 208 | |
| 209 | wxClientDC::wxClientDC( |
| 210 | wxWindow* pTheCanvas |
| 211 | ) |
| 212 | { |
| 213 | SIZEL vSizl = { 0,0}; |
| 214 | ERRORID vError; |
| 215 | wxString sError; |
| 216 | |
| 217 | m_pCanvas = pTheCanvas; |
| 218 | |
| 219 | // |
| 220 | // default under PM is that Window and Client DC's are the same |
| 221 | // |
| 222 | m_hDC = (WXHDC) ::WinOpenWindowDC(GetWinHwnd(pTheCanvas)); |
| 223 | m_hPS = ::GpiCreatePS( wxGetInstance() |
| 224 | ,m_hDC |
| 225 | ,&vSizl |
| 226 | ,PU_PELS | GPIF_LONG | GPIA_ASSOC |
| 227 | ); |
| 228 | |
| 229 | // Set the wxWidgets color table |
| 230 | if (!::GpiCreateLogColorTable( m_hPS |
| 231 | ,0L |
| 232 | ,LCOLF_CONSECRGB |
| 233 | ,0L |
| 234 | ,(LONG)wxTheColourDatabase->m_nSize |
| 235 | ,(PLONG)wxTheColourDatabase->m_palTable |
| 236 | )) |
| 237 | { |
| 238 | vError = ::WinGetLastError(vHabmain); |
| 239 | sError = wxPMErrorToStr(vError); |
| 240 | wxLogError("Unable to set current color table. Error: %s\n", sError.c_str()); |
| 241 | } |
| 242 | ::GpiCreateLogColorTable( m_hPS |
| 243 | ,0L |
| 244 | ,LCOLF_RGB |
| 245 | ,0L |
| 246 | ,0L |
| 247 | ,NULL |
| 248 | ); |
| 249 | // |
| 250 | // Set the DC/PS rectangle |
| 251 | // |
| 252 | ::WinQueryWindowRect( GetWinHwnd(m_pCanvas) |
| 253 | ,&m_vRclPaint |
| 254 | ); |
| 255 | InitDC(); |
| 256 | } // end of wxClientDC::wxClientDC |
| 257 | |
| 258 | void wxClientDC::InitDC() |
| 259 | { |
| 260 | wxWindowDC::InitDC(); |
| 261 | |
| 262 | // in wxUniv build we must manually do some DC adjustments usually |
| 263 | // performed by Windows for us |
| 264 | #ifdef __WXUNIVERSAL__ |
| 265 | wxPoint ptOrigin = m_pCanvas->GetClientAreaOrigin(); |
| 266 | if ( ptOrigin.x || ptOrigin.y ) |
| 267 | { |
| 268 | // no need to shift DC origin if shift is null |
| 269 | SetDeviceOrigin(ptOrigin.x, ptOrigin.y); |
| 270 | } |
| 271 | |
| 272 | // clip the DC to avoid overwriting the non client area |
| 273 | SetClippingRegion(wxPoint(0, 0), m_pCanvas->GetClientSize()); |
| 274 | #endif // __WXUNIVERSAL__ |
| 275 | } // end of wxClientDC::InitDC |
| 276 | |
| 277 | wxClientDC::~wxClientDC() |
| 278 | { |
| 279 | } // end of wxClientDC::~wxClientDC |
| 280 | |
| 281 | void wxClientDC::DoGetSize( |
| 282 | int* pnWidth |
| 283 | , int* pnHeight |
| 284 | ) const |
| 285 | { |
| 286 | wxCHECK_RET( m_pCanvas, _T("wxWindowDC without a window?") ); |
| 287 | m_pCanvas->GetClientSize( pnWidth |
| 288 | ,pnHeight |
| 289 | ); |
| 290 | } // end of wxClientDC::DoGetSize |
| 291 | |
| 292 | // ---------------------------------------------------------------------------- |
| 293 | // wxPaintDC |
| 294 | // ---------------------------------------------------------------------------- |
| 295 | |
| 296 | wxArrayDCInfo wxPaintDC::ms_cache; |
| 297 | |
| 298 | wxPaintDC::wxPaintDC() |
| 299 | { |
| 300 | m_pCanvas = NULL; |
| 301 | m_hDC = 0; |
| 302 | } |
| 303 | |
| 304 | wxPaintDC::wxPaintDC( |
| 305 | wxWindow* pCanvas |
| 306 | ) |
| 307 | { |
| 308 | wxCHECK_RET(pCanvas, wxT("NULL canvas in wxPaintDC ctor")); |
| 309 | |
| 310 | #ifdef __WXDEBUG__ |
| 311 | if (g_isPainting <= 0) |
| 312 | { |
| 313 | wxFAIL_MSG( wxT("wxPaintDC may be created only in EVT_PAINT handler!") ); |
| 314 | return; |
| 315 | } |
| 316 | #endif // __WXDEBUG__ |
| 317 | |
| 318 | m_pCanvas = pCanvas; |
| 319 | |
| 320 | // |
| 321 | // Do we have a DC for this window in the cache? |
| 322 | // |
| 323 | wxPaintDCInfo* pInfo = FindInCache(); |
| 324 | |
| 325 | if (pInfo) |
| 326 | { |
| 327 | m_hDC = pInfo->m_hDC; |
| 328 | pInfo->m_nCount++; |
| 329 | } |
| 330 | else // not in cache, create a new one |
| 331 | { |
| 332 | HPS hPS; |
| 333 | |
| 334 | m_hDC = ::WinOpenWindowDC(GetWinHwnd(m_pCanvas)); |
| 335 | hPS = ::WinBeginPaint( GetWinHwnd(m_pCanvas) |
| 336 | ,NULLHANDLE |
| 337 | ,&g_paintStruct |
| 338 | ); |
| 339 | if(hPS) |
| 340 | { |
| 341 | ::GpiAssociate(hPS, m_hDC); |
| 342 | m_hOldPS = m_hPS; |
| 343 | m_hPS = hPS; |
| 344 | ::GpiCreateLogColorTable( m_hPS |
| 345 | ,0L |
| 346 | ,LCOLF_CONSECRGB |
| 347 | ,0L |
| 348 | ,(LONG)wxTheColourDatabase->m_nSize |
| 349 | ,(PLONG)wxTheColourDatabase->m_palTable |
| 350 | ); |
| 351 | ::GpiCreateLogColorTable( m_hPS |
| 352 | ,0L |
| 353 | ,LCOLF_RGB |
| 354 | ,0L |
| 355 | ,0L |
| 356 | ,NULL |
| 357 | ); |
| 358 | |
| 359 | ::WinFillRect(hPS, &g_paintStruct, m_pCanvas->GetBackgroundColour().GetPixel()); |
| 360 | ::WinQueryWindowRect( GetWinHwnd(m_pCanvas) |
| 361 | ,&m_vRclPaint |
| 362 | ); |
| 363 | } |
| 364 | |
| 365 | m_bIsPaintTime = TRUE; |
| 366 | ms_cache.Add(new wxPaintDCInfo(m_pCanvas, this)); |
| 367 | } |
| 368 | InitDC(); |
| 369 | } // end of wxPaintDC::wxPaintDC |
| 370 | |
| 371 | wxPaintDC::~wxPaintDC() |
| 372 | { |
| 373 | if ( m_hDC ) |
| 374 | { |
| 375 | SelectOldObjects(m_hDC); |
| 376 | |
| 377 | size_t nIndex; |
| 378 | wxPaintDCInfo* pInfo = FindInCache(&nIndex); |
| 379 | |
| 380 | wxCHECK_RET( pInfo, wxT("existing DC should have a cache entry") ); |
| 381 | |
| 382 | if ( !--pInfo->m_nCount ) |
| 383 | { |
| 384 | ::WinEndPaint(m_hPS); |
| 385 | m_hPS = m_hOldPS; |
| 386 | m_bIsPaintTime = FALSE; |
| 387 | ms_cache.RemoveAt(nIndex); |
| 388 | } |
| 389 | //else: cached DC entry is still in use |
| 390 | |
| 391 | // prevent the base class dtor from ReleaseDC()ing it again |
| 392 | m_hDC = 0; |
| 393 | } |
| 394 | } |
| 395 | |
| 396 | wxPaintDCInfo* wxPaintDC::FindInCache( |
| 397 | size_t* pIndex |
| 398 | ) const |
| 399 | { |
| 400 | wxPaintDCInfo* pInfo = NULL; |
| 401 | size_t nCache = ms_cache.GetCount(); |
| 402 | |
| 403 | for (size_t n = 0; n < nCache; n++) |
| 404 | { |
| 405 | pInfo = &ms_cache[n]; |
| 406 | if (pInfo->m_hWnd == m_pCanvas->GetHWND()) |
| 407 | { |
| 408 | if (pIndex) |
| 409 | *pIndex = n; |
| 410 | break; |
| 411 | } |
| 412 | } |
| 413 | return pInfo; |
| 414 | } // end of wxPaintDC::FindInCache |
| 415 | |
| 416 | // find the entry for this DC in the cache (keyed by the window) |
| 417 | WXHDC wxPaintDC::FindDCInCache( |
| 418 | wxWindow* pWin |
| 419 | ) |
| 420 | { |
| 421 | wxPaintDCInfo* pInfo = NULL; |
| 422 | size_t nCache = ms_cache.GetCount(); |
| 423 | |
| 424 | for (size_t n = 0; n < nCache; n++) |
| 425 | { |
| 426 | pInfo = &ms_cache[n]; |
| 427 | if (pInfo->m_hWnd == pWin->GetHWND()) |
| 428 | { |
| 429 | return pInfo->m_hDC; |
| 430 | } |
| 431 | } |
| 432 | return 0; |
| 433 | } // end of wxPaintDC::FindInCache |
| 434 | |