| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: src/dfb/dc.cpp |
| 3 | // Purpose: wxDFBDCImpl class |
| 4 | // Author: Vaclav Slavik |
| 5 | // Created: 2006-08-07 |
| 6 | // RCS-ID: $Id$ |
| 7 | // Copyright: (c) 2006 REA Elektronik GmbH |
| 8 | // Licence: wxWindows licence |
| 9 | ///////////////////////////////////////////////////////////////////////////// |
| 10 | |
| 11 | // =========================================================================== |
| 12 | // declarations |
| 13 | // =========================================================================== |
| 14 | |
| 15 | // --------------------------------------------------------------------------- |
| 16 | // headers |
| 17 | // --------------------------------------------------------------------------- |
| 18 | |
| 19 | // For compilers that support precompilation, includes "wx.h". |
| 20 | #include "wx/wxprec.h" |
| 21 | |
| 22 | #ifdef __BORLANDC__ |
| 23 | #pragma hdrstop |
| 24 | #endif |
| 25 | |
| 26 | #ifndef WX_PRECOMP |
| 27 | #include "wx/dcmemory.h" |
| 28 | #include "wx/log.h" |
| 29 | #endif |
| 30 | |
| 31 | #include "wx/dfb/dc.h" |
| 32 | #include "wx/dfb/private.h" |
| 33 | |
| 34 | // these values are used to initialize newly created DC |
| 35 | #define DEFAULT_FONT (*wxNORMAL_FONT) |
| 36 | #define DEFAULT_PEN (*wxBLACK_PEN) |
| 37 | #define DEFAULT_BRUSH (*wxWHITE_BRUSH) |
| 38 | |
| 39 | // =========================================================================== |
| 40 | // implementation |
| 41 | // =========================================================================== |
| 42 | |
| 43 | //----------------------------------------------------------------------------- |
| 44 | // wxDFBDCImpl |
| 45 | //----------------------------------------------------------------------------- |
| 46 | |
| 47 | IMPLEMENT_ABSTRACT_CLASS(wxDFBDCImpl, wxDCImpl) |
| 48 | |
| 49 | void wxDFBDCImpl::DFBInit(const wxIDirectFBSurfacePtr& surface) |
| 50 | { |
| 51 | m_surface = surface; |
| 52 | |
| 53 | wxCHECK_RET( surface != NULL, "invalid surface" ); |
| 54 | |
| 55 | m_mm_to_pix_x = (double)wxGetDisplaySize().GetWidth() / |
| 56 | (double)wxGetDisplaySizeMM().GetWidth(); |
| 57 | m_mm_to_pix_y = (double)wxGetDisplaySize().GetHeight() / |
| 58 | (double)wxGetDisplaySizeMM().GetHeight(); |
| 59 | |
| 60 | SetFont(DEFAULT_FONT); |
| 61 | SetPen(DEFAULT_PEN); |
| 62 | SetBrush(DEFAULT_BRUSH); |
| 63 | } |
| 64 | |
| 65 | |
| 66 | // --------------------------------------------------------------------------- |
| 67 | // clipping |
| 68 | // --------------------------------------------------------------------------- |
| 69 | |
| 70 | void wxDFBDCImpl::DoSetClippingRegion(wxCoord cx, wxCoord cy, wxCoord cw, wxCoord ch) |
| 71 | { |
| 72 | wxCHECK_RET( IsOk(), wxT("invalid dc") ); |
| 73 | |
| 74 | wxSize size(GetSize()); |
| 75 | |
| 76 | wxASSERT_MSG( !m_clipping, |
| 77 | "narrowing clipping region not implemented yet" ); |
| 78 | |
| 79 | // NB: We intersect the clipping rectangle with surface's area here because |
| 80 | // DirectFB will return an error if you try to set clipping rectangle |
| 81 | // that is partially outside of the surface. |
| 82 | DFBRegion r; |
| 83 | r.x1 = wxMax(0, XLOG2DEV(cx)); |
| 84 | r.y1 = wxMax(0, YLOG2DEV(cy)); |
| 85 | r.x2 = wxMin(r.x1 + XLOG2DEVREL(cw), size.x) - 1; |
| 86 | r.y2 = wxMin(r.y1 + YLOG2DEVREL(ch), size.y) - 1; |
| 87 | |
| 88 | if ( !m_surface->SetClip(&r) ) |
| 89 | return; |
| 90 | |
| 91 | m_clipX1 = cx; |
| 92 | m_clipY1 = cy; |
| 93 | m_clipX2 = cx + cw - 1; |
| 94 | m_clipY2 = cy + ch -1; |
| 95 | m_clipping = true; |
| 96 | } |
| 97 | |
| 98 | void wxDFBDCImpl::DoSetDeviceClippingRegion(const wxRegion& region) |
| 99 | { |
| 100 | // NB: this can be done because wxDFB only supports rectangular regions |
| 101 | wxRect rect = region.AsRect(); |
| 102 | |
| 103 | // our parameter is in physical coordinates while DoSetClippingRegion() |
| 104 | // takes logical ones |
| 105 | rect.x = XDEV2LOG(rect.x); |
| 106 | rect.y = YDEV2LOG(rect.y); |
| 107 | rect.width = XDEV2LOG(rect.width); |
| 108 | rect.height = YDEV2LOG(rect.height); |
| 109 | |
| 110 | DoSetClippingRegion(rect.x, rect.y, rect.width, rect.height); |
| 111 | } |
| 112 | |
| 113 | void wxDFBDCImpl::DestroyClippingRegion() |
| 114 | { |
| 115 | wxCHECK_RET( IsOk(), wxT("invalid dc") ); |
| 116 | |
| 117 | m_surface->SetClip(NULL); |
| 118 | |
| 119 | ResetClipping(); |
| 120 | } |
| 121 | |
| 122 | // --------------------------------------------------------------------------- |
| 123 | // query capabilities |
| 124 | // --------------------------------------------------------------------------- |
| 125 | |
| 126 | int wxDFBDCImpl::GetDepth() const |
| 127 | { |
| 128 | return m_surface->GetDepth(); |
| 129 | } |
| 130 | |
| 131 | // --------------------------------------------------------------------------- |
| 132 | // drawing |
| 133 | // --------------------------------------------------------------------------- |
| 134 | |
| 135 | void wxDFBDCImpl::Clear() |
| 136 | { |
| 137 | wxCHECK_RET( IsOk(), wxT("invalid dc") ); |
| 138 | |
| 139 | if ( m_backgroundBrush.GetStyle() == wxTRANSPARENT ) |
| 140 | return; |
| 141 | |
| 142 | wxColour clr = m_backgroundBrush.GetColour(); |
| 143 | m_surface->Clear(clr.Red(), clr.Green(), clr.Blue(), clr.Alpha()); |
| 144 | |
| 145 | wxSize size(GetSize()); |
| 146 | CalcBoundingBox(XDEV2LOG(0), YDEV2LOG(0)); |
| 147 | CalcBoundingBox(XDEV2LOG(size.x), YDEV2LOG(size.y)); |
| 148 | } |
| 149 | |
| 150 | extern bool wxDoFloodFill(wxDC *dc, wxCoord x, wxCoord y, |
| 151 | const wxColour & col, wxFloodFillStyle style); |
| 152 | |
| 153 | bool wxDFBDCImpl::DoFloodFill(wxCoord x, wxCoord y, |
| 154 | const wxColour& col, wxFloodFillStyle style) |
| 155 | { |
| 156 | return wxDoFloodFill(GetOwner(), x, y, col, style); |
| 157 | } |
| 158 | |
| 159 | bool wxDFBDCImpl::DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const |
| 160 | { |
| 161 | wxCHECK_MSG( col, false, "NULL colour parameter in wxDFBDCImpl::GetPixel"); |
| 162 | |
| 163 | wxFAIL_MSG( "GetPixel not implemented" ); |
| 164 | |
| 165 | wxUnusedVar(x); |
| 166 | wxUnusedVar(y); |
| 167 | |
| 168 | return false; |
| 169 | } |
| 170 | |
| 171 | void wxDFBDCImpl::DoCrossHair(wxCoord x, wxCoord y) |
| 172 | { |
| 173 | wxCHECK_RET( IsOk(), wxT("invalid dc") ); |
| 174 | |
| 175 | wxFAIL_MSG( "CrossHair not implemented" ); |
| 176 | |
| 177 | wxUnusedVar(x); |
| 178 | wxUnusedVar(y); |
| 179 | } |
| 180 | |
| 181 | void wxDFBDCImpl::DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2) |
| 182 | { |
| 183 | wxCHECK_RET( IsOk(), wxT("invalid dc") ); |
| 184 | |
| 185 | if ( m_pen.GetStyle() == wxTRANSPARENT ) |
| 186 | return; |
| 187 | |
| 188 | wxCoord xx1 = XLOG2DEV(x1); |
| 189 | wxCoord yy1 = YLOG2DEV(y1); |
| 190 | wxCoord xx2 = XLOG2DEV(x2); |
| 191 | wxCoord yy2 = YLOG2DEV(y2); |
| 192 | |
| 193 | // FIXME: DrawLine() shouldn't draw the last pixel, but DFB's DrawLine() |
| 194 | // does draw it. We should undo any change to the last pixel by |
| 195 | // using GetPixel() and PutPixel(), but until they are implemented, |
| 196 | // handle at least the special case of vertical and horizontal |
| 197 | // lines correctly: |
| 198 | if ( xx1 == xx2 ) |
| 199 | { |
| 200 | if ( yy1 < yy2 ) |
| 201 | yy2--; |
| 202 | else if ( yy1 > yy2 ) |
| 203 | yy2++; |
| 204 | } |
| 205 | if ( yy1 == yy2 ) |
| 206 | { |
| 207 | if ( xx1 < xx2 ) |
| 208 | xx2--; |
| 209 | else if ( xx1 > xx2 ) |
| 210 | xx2++; |
| 211 | } |
| 212 | |
| 213 | m_surface->DrawLine(xx1, yy1, xx2, yy2); |
| 214 | |
| 215 | CalcBoundingBox(x1, y1); |
| 216 | CalcBoundingBox(x2, y2); |
| 217 | } |
| 218 | |
| 219 | // Draws an arc of a circle, centred on (xc, yc), with starting point (x1, y1) |
| 220 | // and ending at (x2, y2) |
| 221 | void wxDFBDCImpl::DoDrawArc(wxCoord WXUNUSED(x1), wxCoord WXUNUSED(y1), |
| 222 | wxCoord WXUNUSED(x2), wxCoord WXUNUSED(y2), |
| 223 | wxCoord WXUNUSED(xc), wxCoord WXUNUSED(yc)) |
| 224 | { |
| 225 | wxCHECK_RET( IsOk(), wxT("invalid dc") ); |
| 226 | |
| 227 | wxFAIL_MSG( "DrawArc not implemented" ); |
| 228 | } |
| 229 | |
| 230 | void wxDFBDCImpl::DoDrawPoint(wxCoord x, wxCoord y) |
| 231 | { |
| 232 | wxCHECK_RET( IsOk(), wxT("invalid dc") ); |
| 233 | |
| 234 | // NB: DirectFB API doesn't provide a function for drawing points, so |
| 235 | // implement it as 1px long line. This is inefficient, but then, so is |
| 236 | // using DrawPoint() for drawing more than a few points. |
| 237 | DoDrawLine(x, y, x, y); |
| 238 | |
| 239 | // FIXME_DFB: implement special cases for common formats (RGB24,RGBA/RGB32) |
| 240 | } |
| 241 | |
| 242 | void wxDFBDCImpl::DoDrawPolygon(int WXUNUSED(n), wxPoint WXUNUSED(points)[], |
| 243 | wxCoord WXUNUSED(xoffset), wxCoord WXUNUSED(yoffset), |
| 244 | wxPolygonFillMode WXUNUSED(fillStyle)) |
| 245 | { |
| 246 | wxCHECK_RET( IsOk(), wxT("invalid dc") ); |
| 247 | |
| 248 | wxFAIL_MSG( "DrawPolygon not implemented" ); |
| 249 | } |
| 250 | |
| 251 | void wxDFBDCImpl::DoDrawLines(int WXUNUSED(n), wxPoint WXUNUSED(points)[], |
| 252 | wxCoord WXUNUSED(xoffset), wxCoord WXUNUSED(yoffset)) |
| 253 | { |
| 254 | wxCHECK_RET( IsOk(), wxT("invalid dc") ); |
| 255 | |
| 256 | // TODO: impl. using DirectDB's DrawLines |
| 257 | wxFAIL_MSG( "DrawLines not implemented" ); |
| 258 | } |
| 259 | |
| 260 | void wxDFBDCImpl::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height) |
| 261 | { |
| 262 | wxCHECK_RET( IsOk(), wxT("invalid dc") ); |
| 263 | |
| 264 | wxCoord xx = XLOG2DEV(x); |
| 265 | wxCoord yy = YLOG2DEV(y); |
| 266 | wxCoord ww = m_signX * XLOG2DEVREL(width); |
| 267 | wxCoord hh = m_signY * YLOG2DEVREL(height); |
| 268 | |
| 269 | if ( ww == 0 || hh == 0 ) return; |
| 270 | |
| 271 | if ( ww < 0 ) |
| 272 | { |
| 273 | ww = -ww; |
| 274 | xx = xx - ww; |
| 275 | } |
| 276 | if ( hh < 0 ) |
| 277 | { |
| 278 | hh = -hh; |
| 279 | yy = yy - hh; |
| 280 | } |
| 281 | |
| 282 | if ( m_brush.GetStyle() != wxTRANSPARENT ) |
| 283 | { |
| 284 | SelectColour(m_brush.GetColour()); |
| 285 | m_surface->FillRectangle(xx, yy, ww, hh); |
| 286 | // restore pen's colour, because other drawing functions expect the |
| 287 | // colour to be set to the pen: |
| 288 | SelectColour(m_pen.GetColour()); |
| 289 | } |
| 290 | |
| 291 | if ( m_pen.GetStyle() != wxTRANSPARENT ) |
| 292 | { |
| 293 | m_surface->DrawRectangle(xx, yy, ww, hh); |
| 294 | } |
| 295 | |
| 296 | CalcBoundingBox(x, y); |
| 297 | CalcBoundingBox(x + width, y + height); |
| 298 | } |
| 299 | |
| 300 | void wxDFBDCImpl::DoDrawRoundedRectangle(wxCoord WXUNUSED(x), |
| 301 | wxCoord WXUNUSED(y), |
| 302 | wxCoord WXUNUSED(width), |
| 303 | wxCoord WXUNUSED(height), |
| 304 | double WXUNUSED(radius)) |
| 305 | { |
| 306 | wxCHECK_RET( IsOk(), wxT("invalid dc") ); |
| 307 | |
| 308 | wxFAIL_MSG( "DrawRoundedRectangle not implemented" ); |
| 309 | } |
| 310 | |
| 311 | void wxDFBDCImpl::DoDrawEllipse(wxCoord WXUNUSED(x), |
| 312 | wxCoord WXUNUSED(y), |
| 313 | wxCoord WXUNUSED(width), |
| 314 | wxCoord WXUNUSED(height)) |
| 315 | { |
| 316 | wxCHECK_RET( IsOk(), wxT("invalid dc") ); |
| 317 | |
| 318 | wxFAIL_MSG( "DrawElipse not implemented" ); |
| 319 | } |
| 320 | |
| 321 | void wxDFBDCImpl::DoDrawEllipticArc(wxCoord WXUNUSED(x), |
| 322 | wxCoord WXUNUSED(y), |
| 323 | wxCoord WXUNUSED(w), |
| 324 | wxCoord WXUNUSED(h), |
| 325 | double WXUNUSED(sa), |
| 326 | double WXUNUSED(ea)) |
| 327 | { |
| 328 | wxCHECK_RET( IsOk(), wxT("invalid dc") ); |
| 329 | |
| 330 | wxFAIL_MSG( "DrawElipticArc not implemented" ); |
| 331 | } |
| 332 | |
| 333 | void wxDFBDCImpl::DoDrawText(const wxString& text, wxCoord x, wxCoord y) |
| 334 | { |
| 335 | wxCHECK_RET( IsOk(), wxT("invalid dc") ); |
| 336 | |
| 337 | wxCoord xx = XLOG2DEV(x); |
| 338 | wxCoord yy = YLOG2DEV(y); |
| 339 | |
| 340 | // update the bounding box |
| 341 | wxCoord w, h; |
| 342 | CalcBoundingBox(x, y); |
| 343 | DoGetTextExtent(text, &w, &h); |
| 344 | CalcBoundingBox(x + w, y + h); |
| 345 | |
| 346 | // if background mode is solid, DrawText must paint text's background: |
| 347 | if ( m_backgroundMode == wxSOLID ) |
| 348 | { |
| 349 | wxCHECK_RET( m_textBackgroundColour.Ok(), |
| 350 | wxT("invalid background color") ); |
| 351 | |
| 352 | SelectColour(m_textBackgroundColour); |
| 353 | m_surface->FillRectangle(xx, yy, XLOG2DEVREL(w), YLOG2DEVREL(h)); |
| 354 | } |
| 355 | |
| 356 | // finally draw the text itself: |
| 357 | wxCHECK_RET( m_textForegroundColour.Ok(), |
| 358 | wxT("invalid foreground color") ); |
| 359 | SelectColour(m_textForegroundColour); |
| 360 | m_surface->DrawString(text.utf8_str(), -1, xx, yy, DSTF_LEFT | DSTF_TOP); |
| 361 | |
| 362 | // restore pen's colour, because other drawing functions expect the colour |
| 363 | // to be set to the pen: |
| 364 | SelectColour(m_pen.GetColour()); |
| 365 | } |
| 366 | |
| 367 | void wxDFBDCImpl::DoDrawRotatedText(const wxString& WXUNUSED(text), |
| 368 | wxCoord WXUNUSED(x), wxCoord WXUNUSED(y), |
| 369 | double WXUNUSED(angle)) |
| 370 | { |
| 371 | wxCHECK_RET( IsOk(), wxT("invalid dc") ); |
| 372 | |
| 373 | wxFAIL_MSG( "DrawRotatedText not implemented" ); |
| 374 | } |
| 375 | |
| 376 | // --------------------------------------------------------------------------- |
| 377 | // set GDI objects |
| 378 | // --------------------------------------------------------------------------- |
| 379 | |
| 380 | void wxDFBDCImpl::SetPen(const wxPen& pen) |
| 381 | { |
| 382 | m_pen = pen.Ok() ? pen : DEFAULT_PEN; |
| 383 | |
| 384 | SelectColour(m_pen.GetColour()); |
| 385 | } |
| 386 | |
| 387 | void wxDFBDCImpl::SetBrush(const wxBrush& brush) |
| 388 | { |
| 389 | m_brush = brush.Ok() ? brush : DEFAULT_BRUSH; |
| 390 | } |
| 391 | |
| 392 | void wxDFBDCImpl::SelectColour(const wxColour& clr) |
| 393 | { |
| 394 | m_surface->SetColor(clr.Red(), clr.Green(), clr.Blue(), clr.Alpha()); |
| 395 | #warning "use SetColorIndex?" |
| 396 | } |
| 397 | |
| 398 | #if wxUSE_PALETTE |
| 399 | void wxDFBDCImpl::SetPalette(const wxPalette& WXUNUSED(palette)) |
| 400 | { |
| 401 | wxCHECK_RET( IsOk(), wxT("invalid dc") ); |
| 402 | |
| 403 | wxFAIL_MSG( "SetPalette not implemented" ); |
| 404 | } |
| 405 | #endif // wxUSE_PALETTE |
| 406 | |
| 407 | void wxDFBDCImpl::SetFont(const wxFont& font) |
| 408 | { |
| 409 | wxCHECK_RET( IsOk(), wxT("invalid dc") ); |
| 410 | |
| 411 | wxFont f(font.Ok() ? font : DEFAULT_FONT); |
| 412 | |
| 413 | wxFont oldfont(m_font); |
| 414 | |
| 415 | m_font = f; |
| 416 | |
| 417 | if ( !m_surface->SetFont(GetCurrentFont()) ) |
| 418 | { |
| 419 | m_font = oldfont; |
| 420 | return; |
| 421 | } |
| 422 | } |
| 423 | |
| 424 | wxIDirectFBFontPtr wxDFBDCImpl::GetCurrentFont() const |
| 425 | { |
| 426 | bool aa = (GetDepth() > 8); |
| 427 | return m_font.GetDirectFBFont(aa); |
| 428 | } |
| 429 | |
| 430 | void wxDFBDCImpl::SetBackground(const wxBrush& brush) |
| 431 | { |
| 432 | wxCHECK_RET( IsOk(), wxT("invalid dc") ); |
| 433 | |
| 434 | if (!brush.Ok()) return; |
| 435 | |
| 436 | m_backgroundBrush = brush; |
| 437 | } |
| 438 | |
| 439 | void wxDFBDCImpl::SetBackgroundMode(int mode) |
| 440 | { |
| 441 | m_backgroundMode = mode; |
| 442 | } |
| 443 | |
| 444 | void wxDFBDCImpl::SetLogicalFunction(wxRasterOperationMode function) |
| 445 | { |
| 446 | wxCHECK_RET( IsOk(), wxT("invalid dc") ); |
| 447 | |
| 448 | // NB: we could also support XOR, but for blitting only (via DSBLIT_XOR); |
| 449 | // and possibly others via SetSrc/DstBlendFunction() |
| 450 | wxASSERT_MSG( function == wxCOPY, |
| 451 | "only wxCOPY logical function supported" ); |
| 452 | |
| 453 | m_logicalFunction = function; |
| 454 | } |
| 455 | |
| 456 | bool wxDFBDCImpl::StartDoc(const wxString& WXUNUSED(message)) |
| 457 | { |
| 458 | // We might be previewing, so return true to let it continue. |
| 459 | return true; |
| 460 | } |
| 461 | |
| 462 | void wxDFBDCImpl::EndDoc() |
| 463 | { |
| 464 | } |
| 465 | |
| 466 | void wxDFBDCImpl::StartPage() |
| 467 | { |
| 468 | } |
| 469 | |
| 470 | void wxDFBDCImpl::EndPage() |
| 471 | { |
| 472 | } |
| 473 | |
| 474 | // --------------------------------------------------------------------------- |
| 475 | // text metrics |
| 476 | // --------------------------------------------------------------------------- |
| 477 | |
| 478 | wxCoord wxDFBDCImpl::GetCharHeight() const |
| 479 | { |
| 480 | wxCHECK_MSG( IsOk(), -1, wxT("invalid dc") ); |
| 481 | wxCHECK_MSG( m_font.Ok(), -1, wxT("no font selected") ); |
| 482 | |
| 483 | int h = -1; |
| 484 | GetCurrentFont()->GetHeight(&h); |
| 485 | return YDEV2LOGREL(h); |
| 486 | } |
| 487 | |
| 488 | wxCoord wxDFBDCImpl::GetCharWidth() const |
| 489 | { |
| 490 | wxCHECK_MSG( IsOk(), -1, wxT("invalid dc") ); |
| 491 | wxCHECK_MSG( m_font.Ok(), -1, wxT("no font selected") ); |
| 492 | |
| 493 | int w = -1; |
| 494 | GetCurrentFont()->GetStringWidth("H", 1, &w); |
| 495 | // VS: YDEV is corrent, it should *not* be XDEV, because font's are only |
| 496 | // scaled according to m_scaleY |
| 497 | return YDEV2LOGREL(w); |
| 498 | } |
| 499 | |
| 500 | void wxDFBDCImpl::DoGetTextExtent(const wxString& string, wxCoord *x, wxCoord *y, |
| 501 | wxCoord *descent, wxCoord *externalLeading, |
| 502 | const wxFont *theFont) const |
| 503 | { |
| 504 | wxCHECK_RET( IsOk(), wxT("invalid dc") ); |
| 505 | wxCHECK_RET( m_font.Ok(), wxT("no font selected") ); |
| 506 | wxCHECK_RET( !theFont || theFont->Ok(), wxT("invalid font") ); |
| 507 | |
| 508 | wxFont oldFont; |
| 509 | if ( theFont != NULL ) |
| 510 | { |
| 511 | oldFont = m_font; |
| 512 | wxConstCast(this, wxDFBDCImpl)->SetFont(*theFont); |
| 513 | } |
| 514 | |
| 515 | wxCoord xx = 0, yy = 0; |
| 516 | DFBRectangle rect; |
| 517 | wxIDirectFBFontPtr f = GetCurrentFont(); |
| 518 | |
| 519 | if ( f->GetStringExtents(string.utf8_str(), -1, &rect, NULL) ) |
| 520 | { |
| 521 | // VS: YDEV is corrent, it should *not* be XDEV, because font's are |
| 522 | // only scaled according to m_scaleY |
| 523 | xx = YDEV2LOGREL(rect.w); |
| 524 | yy = YDEV2LOGREL(rect.h); |
| 525 | |
| 526 | if ( descent ) |
| 527 | { |
| 528 | int d; |
| 529 | if ( f->GetDescender(&d) ) |
| 530 | *descent = YDEV2LOGREL(-d); |
| 531 | else |
| 532 | *descent = 0; |
| 533 | } |
| 534 | } |
| 535 | |
| 536 | if ( x ) *x = xx; |
| 537 | if ( y ) *y = yy; |
| 538 | if ( externalLeading ) *externalLeading = 0; |
| 539 | |
| 540 | if ( theFont != NULL ) |
| 541 | wxConstCast(this, wxDFBDCImpl)->SetFont(oldFont); |
| 542 | } |
| 543 | |
| 544 | |
| 545 | |
| 546 | // --------------------------------------------------------------------------- |
| 547 | // mapping modes |
| 548 | // --------------------------------------------------------------------------- |
| 549 | |
| 550 | // FIXME_DFB: scaling affects pixel size of font, pens, brushes, which |
| 551 | // is not currently implemented here; probably makes sense to |
| 552 | // switch to Cairo instead of implementing everything for DFB |
| 553 | |
| 554 | void wxDFBDCImpl::DoGetSize(int *w, int *h) const |
| 555 | { |
| 556 | wxCHECK_RET( IsOk(), wxT("invalid dc") ); |
| 557 | |
| 558 | m_surface->GetSize(w, h); |
| 559 | } |
| 560 | |
| 561 | void wxDFBDCImpl::DoGetSizeMM(int *width, int *height) const |
| 562 | { |
| 563 | #warning "move this to common code?" |
| 564 | int w = 0; |
| 565 | int h = 0; |
| 566 | GetSize(&w, &h); |
| 567 | if ( width ) *width = int(double(w) / (m_userScaleX*m_mm_to_pix_x)); |
| 568 | if ( height ) *height = int(double(h) / (m_userScaleY*m_mm_to_pix_y)); |
| 569 | } |
| 570 | |
| 571 | wxSize wxDFBDCImpl::GetPPI() const |
| 572 | { |
| 573 | #warning "move this to common code?" |
| 574 | return wxSize(int(double(m_mm_to_pix_x) * inches2mm), |
| 575 | int(double(m_mm_to_pix_y) * inches2mm)); |
| 576 | } |
| 577 | |
| 578 | |
| 579 | // --------------------------------------------------------------------------- |
| 580 | // Blitting |
| 581 | // --------------------------------------------------------------------------- |
| 582 | |
| 583 | bool wxDFBDCImpl::DoBlit(wxCoord xdest, wxCoord ydest, |
| 584 | wxCoord width, wxCoord height, |
| 585 | wxDC *source, wxCoord xsrc, wxCoord ysrc, |
| 586 | wxRasterOperationMode rop, bool useMask, |
| 587 | wxCoord xsrcMask, wxCoord ysrcMask) |
| 588 | { |
| 589 | wxCHECK_MSG( IsOk(), false, "invalid dc" ); |
| 590 | wxCHECK_MSG( source, false, "invalid source dc" ); |
| 591 | |
| 592 | // NB: we could also support XOR here (via DSBLIT_XOR) |
| 593 | // and possibly others via SetSrc/DstBlendFunction() |
| 594 | wxCHECK_MSG( rop == wxCOPY, false, "only wxCOPY function supported" ); |
| 595 | |
| 596 | // transform the source DC coords to the device ones |
| 597 | xsrc = source->LogicalToDeviceX(xsrc); |
| 598 | ysrc = source->LogicalToDeviceY(ysrc); |
| 599 | |
| 600 | // FIXME_DFB: use the mask origin when drawing transparently |
| 601 | wxASSERT_MSG( xsrcMask == -1 && ysrcMask == -1, |
| 602 | "non-default source mask offset not implemented" ); |
| 603 | #if 0 |
| 604 | if (xsrcMask == -1 && ysrcMask == -1) |
| 605 | { |
| 606 | xsrcMask = xsrc; ysrcMask = ysrc; |
| 607 | } |
| 608 | else |
| 609 | { |
| 610 | xsrcMask = source->LogicalToDeviceX(xsrcMask); |
| 611 | ysrcMask = source->LogicalToDeviceY(ysrcMask); |
| 612 | } |
| 613 | #endif |
| 614 | |
| 615 | wxMemoryDC *sourceAsMemDC = wxDynamicCast(source, wxMemoryDC); |
| 616 | if ( sourceAsMemDC ) |
| 617 | { |
| 618 | DoDrawSubBitmap(sourceAsMemDC->GetSelectedBitmap(), |
| 619 | xsrc, ysrc, |
| 620 | width, height, |
| 621 | xdest, ydest, |
| 622 | rop, |
| 623 | useMask); |
| 624 | } |
| 625 | else |
| 626 | { |
| 627 | return DoBlitFromSurface |
| 628 | ( |
| 629 | static_cast<wxDFBDCImpl *>(source->GetImpl()) |
| 630 | ->GetDirectFBSurface(), |
| 631 | xsrc, ysrc, |
| 632 | width, height, |
| 633 | xdest, ydest |
| 634 | ); |
| 635 | } |
| 636 | |
| 637 | return true; |
| 638 | } |
| 639 | |
| 640 | void wxDFBDCImpl::DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y, bool useMask) |
| 641 | { |
| 642 | wxCHECK_RET( IsOk(), wxT("invalid dc") ); |
| 643 | wxCHECK_RET( bmp.Ok(), wxT("invalid bitmap") ); |
| 644 | |
| 645 | DoDrawSubBitmap(bmp, |
| 646 | 0, 0, bmp.GetWidth(), bmp.GetHeight(), |
| 647 | x, y, |
| 648 | m_logicalFunction, useMask); |
| 649 | } |
| 650 | |
| 651 | void wxDFBDCImpl::DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y) |
| 652 | { |
| 653 | // VZ: egcs 1.0.3 refuses to compile this without cast, no idea why |
| 654 | DoDrawBitmap((const wxBitmap&)icon, x, y, true); |
| 655 | } |
| 656 | |
| 657 | void wxDFBDCImpl::DoDrawSubBitmap(const wxBitmap &bmp, |
| 658 | wxCoord x, wxCoord y, wxCoord w, wxCoord h, |
| 659 | wxCoord destx, wxCoord desty, int rop, bool useMask) |
| 660 | { |
| 661 | wxCHECK_RET( IsOk(), wxT("invalid dc") ); |
| 662 | wxCHECK_RET( bmp.Ok(), wxT("invalid bitmap") ); |
| 663 | |
| 664 | // NB: we could also support XOR here (via DSBLIT_XOR) |
| 665 | // and possibly others via SetSrc/DstBlendFunction() |
| 666 | wxCHECK_RET( rop == wxCOPY, "only wxCOPY function supported" ); |
| 667 | |
| 668 | if ( bmp.GetDepth() == 1 ) |
| 669 | { |
| 670 | // Mono bitmaps are handled in special way -- all 1s are drawn in |
| 671 | // foreground colours, all 0s in background colour. |
| 672 | wxFAIL_MSG( "drawing mono bitmaps not implemented" ); |
| 673 | return; |
| 674 | } |
| 675 | |
| 676 | if ( useMask && bmp.GetMask() ) |
| 677 | { |
| 678 | // FIXME_DFB: see MGL sources for a way to do it, but it's not directly |
| 679 | // applicable because DirectFB doesn't implement ROPs; OTOH, |
| 680 | // it has blitting modes that can be useful; finally, see |
| 681 | // DFB's SetSrcBlendFunction() and SetSrcColorKey() |
| 682 | wxFAIL_MSG( "drawing bitmaps with masks not implemented" ); |
| 683 | return; |
| 684 | } |
| 685 | |
| 686 | DoBlitFromSurface(bmp.GetDirectFBSurface(), |
| 687 | x, y, |
| 688 | w, h, |
| 689 | destx, desty); |
| 690 | } |
| 691 | |
| 692 | bool wxDFBDCImpl::DoBlitFromSurface(const wxIDirectFBSurfacePtr& src, |
| 693 | wxCoord srcx, wxCoord srcy, |
| 694 | wxCoord w, wxCoord h, |
| 695 | wxCoord dstx, wxCoord dsty) |
| 696 | { |
| 697 | // don't do anything if the source rectangle is outside of source surface, |
| 698 | // DirectFB would assert in that case: |
| 699 | wxSize srcsize; |
| 700 | src->GetSize(&srcsize.x, &srcsize.y); |
| 701 | if ( !wxRect(srcx, srcy, w, h).Intersects(wxRect(srcsize)) ) |
| 702 | { |
| 703 | wxLogDebug("Blitting from area outside of the source surface, caller code needs fixing."); |
| 704 | return false; |
| 705 | } |
| 706 | |
| 707 | CalcBoundingBox(dstx, dsty); |
| 708 | CalcBoundingBox(dstx + w, dsty + h); |
| 709 | |
| 710 | DFBRectangle srcRect = { srcx, srcy, w, h }; |
| 711 | DFBRectangle dstRect = { XLOG2DEV(dstx), YLOG2DEV(dsty), |
| 712 | XLOG2DEVREL(w), YLOG2DEVREL(h) }; |
| 713 | |
| 714 | wxIDirectFBSurfacePtr dst(m_surface); |
| 715 | |
| 716 | // FIXME: this will have to be different in useMask case, see above |
| 717 | DFBSurfaceBlittingFlags blitFlag = (src->GetPixelFormat() == DSPF_ARGB) |
| 718 | ? DSBLIT_BLEND_ALPHACHANNEL |
| 719 | : DSBLIT_NOFX; |
| 720 | if ( !dst->SetBlittingFlags(blitFlag) ) |
| 721 | return false; |
| 722 | |
| 723 | if ( srcRect.w != dstRect.w || srcRect.h != dstRect.h ) |
| 724 | { |
| 725 | // the bitmap is drawn stretched: |
| 726 | dst->StretchBlit(src, &srcRect, &dstRect); |
| 727 | } |
| 728 | else |
| 729 | { |
| 730 | // no stretching, size is preserved: |
| 731 | dst->Blit(src, &srcRect, dstRect.x, dstRect.y); |
| 732 | } |
| 733 | |
| 734 | return true; |
| 735 | } |