1///////////////////////////////////////////////////////////////////////////// 2// Name: src/mgl/dc.cpp 3// Purpose: wxDC class 4// Author: Vaclav Slavik 5// Created: 2001/03/09 6// RCS-ID: $Id: dc.cpp 42984 2006-11-03 17:42:02Z VZ $ 7// Copyright: (c) 2001-2002 SciTech Software, Inc. (www.scitechsoft.com) 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/dc.h" 28 #include "wx/dcmemory.h" 29 #include "wx/log.h" 30#endif 31 32#include "wx/fontutil.h" 33#include "wx/encinfo.h" 34#include "wx/fontmap.h" 35#include "wx/mgl/private.h" 36 37#include <string.h> 38#include <mgraph.hpp> 39 40 41 42//----------------------------------------------------------------------------- 43// constants 44//----------------------------------------------------------------------------- 45 46const double RAD2DEG = 180.0 / M_PI; 47 48 49//----------------------------------------------------------------------------- 50// pens data: 51//----------------------------------------------------------------------------- 52 53const ushort STIPPLE_wxDOT = 0x5555/* - - - - - - - -*/; 54const ushort STIPPLE_wxLONG_DASH = 0xF0F0/* ---- ----*/; 55const ushort STIPPLE_wxSHORT_DASH = 0xCCCC/*-- -- -- -- */; 56const ushort STIPPLE_wxDOT_DASH = 0x3939/* --- - --- -*/; 57const ushort STIPPLE_wxSOLID = 0xFFFF/*----------------*/; 58 59#define PATTERN_ROW(b7,b6,b5,b4,b3,b2,b1,b0) \ 60 ((b7 << 7) | (b6 << 6) | (b5 << 5) | (b4 << 4) | \ 61 (b3 << 3) | (b2 << 2) | (b1 << 1) | b0) 62 63static pattern_t PATTERN_wxFDIAGONAL_HATCH = {{ 64 PATTERN_ROW(1,0,0,0,0,0,0,0), 65 PATTERN_ROW(0,1,0,0,0,0,0,0), 66 PATTERN_ROW(0,0,1,0,0,0,0,0), 67 PATTERN_ROW(0,0,0,1,0,0,0,0), 68 PATTERN_ROW(0,0,0,0,1,0,0,0), 69 PATTERN_ROW(0,0,0,0,0,1,0,0), 70 PATTERN_ROW(0,0,0,0,0,0,1,0), 71 PATTERN_ROW(0,0,0,0,0,0,0,1), 72 }}; 73 74static pattern_t PATTERN_wxCROSSDIAG_HATCH = {{ 75 PATTERN_ROW(1,0,0,0,0,0,0,1), 76 PATTERN_ROW(0,1,0,0,0,0,1,0), 77 PATTERN_ROW(0,0,1,0,0,1,0,0), 78 PATTERN_ROW(0,0,0,1,1,0,0,0), 79 PATTERN_ROW(0,0,0,1,1,0,0,0), 80 PATTERN_ROW(0,0,1,0,0,1,0,0), 81 PATTERN_ROW(0,1,0,0,0,0,1,0), 82 PATTERN_ROW(1,0,0,0,0,0,0,1), 83 }}; 84 85static pattern_t PATTERN_wxBDIAGONAL_HATCH = {{ 86 PATTERN_ROW(0,0,0,0,0,0,0,1), 87 PATTERN_ROW(0,0,0,0,0,0,1,0), 88 PATTERN_ROW(0,0,0,0,0,1,0,0), 89 PATTERN_ROW(0,0,0,0,1,0,0,0), 90 PATTERN_ROW(0,0,0,1,0,0,0,0), 91 PATTERN_ROW(0,0,1,0,0,0,0,0), 92 PATTERN_ROW(0,1,0,0,0,0,0,0), 93 PATTERN_ROW(1,0,0,0,0,0,0,0), 94 }}; 95 96static pattern_t PATTERN_wxCROSS_HATCH = {{ 97 PATTERN_ROW(0,0,0,1,0,0,0,0), 98 PATTERN_ROW(0,0,0,1,0,0,0,0), 99 PATTERN_ROW(0,0,0,1,0,0,0,0), 100 PATTERN_ROW(1,1,1,1,1,1,1,1), 101 PATTERN_ROW(0,0,0,1,0,0,0,0), 102 PATTERN_ROW(0,0,0,1,0,0,0,0), 103 PATTERN_ROW(0,0,0,1,0,0,0,0), 104 PATTERN_ROW(0,0,0,1,0,0,0,0), 105 }}; 106 107static pattern_t PATTERN_wxHORIZONTAL_HATCH = {{ 108 PATTERN_ROW(0,0,0,0,0,0,0,0), 109 PATTERN_ROW(0,0,0,0,0,0,0,0), 110 PATTERN_ROW(0,0,0,0,0,0,0,0), 111 PATTERN_ROW(1,1,1,1,1,1,1,1), 112 PATTERN_ROW(0,0,0,0,0,0,0,0), 113 PATTERN_ROW(0,0,0,0,0,0,0,0), 114 PATTERN_ROW(0,0,0,0,0,0,0,0), 115 PATTERN_ROW(0,0,0,0,0,0,0,0), 116 }}; 117 118static pattern_t PATTERN_wxVERTICAL_HATCH = {{ 119 PATTERN_ROW(0,0,0,1,0,0,0,0), 120 PATTERN_ROW(0,0,0,1,0,0,0,0), 121 PATTERN_ROW(0,0,0,1,0,0,0,0), 122 PATTERN_ROW(0,0,0,1,0,0,0,0), 123 PATTERN_ROW(0,0,0,1,0,0,0,0), 124 PATTERN_ROW(0,0,0,1,0,0,0,0), 125 PATTERN_ROW(0,0,0,1,0,0,0,0), 126 PATTERN_ROW(0,0,0,1,0,0,0,0), 127 }}; 128 129#undef PATTERN_ROW 130 131//----------------------------------------------------------------------------- 132// wxDC 133//----------------------------------------------------------------------------- 134 135IMPLEMENT_ABSTRACT_CLASS(wxDC, wxDCBase) 136 137// Default constructor 138wxDC::wxDC() 139{ 140 m_isMemDC = false; 141 m_MGLDC = NULL; 142 m_OwnsMGLDC = false; 143 m_ok = false; // must call SetMGLDevCtx() before using it 144 145 m_mm_to_pix_x = (double)wxGetDisplaySize().GetWidth() / 146 (double)wxGetDisplaySizeMM().GetWidth(); 147 m_mm_to_pix_y = (double)wxGetDisplaySize().GetHeight() / 148 (double)wxGetDisplaySizeMM().GetHeight(); 149 150 m_pen = *wxBLACK_PEN; 151 m_font = *wxNORMAL_FONT; 152 m_brush = *wxWHITE_BRUSH; 153 m_penOfsX = m_penOfsY = 0; 154 155 m_penSelected = m_brushSelected = false; 156 m_downloadedPatterns[0] = m_downloadedPatterns[1] = false; 157 158 m_mglFont = NULL; 159} 160 161 162wxDC::~wxDC() 163{ 164 if (m_OwnsMGLDC) 165 delete m_MGLDC; 166} 167 168void wxDC::SetMGLDC(MGLDevCtx *mgldc, bool OwnsMGLDC) 169{ 170 if ( m_OwnsMGLDC && m_MGLDC ) 171 delete m_MGLDC; 172 m_MGLDC = mgldc; 173 m_OwnsMGLDC = OwnsMGLDC; 174 m_ok = true; 175 176 if ( !m_globalClippingRegion.IsNull() ) 177 SetClippingRegion(m_globalClippingRegion); 178 179 InitializeMGLDC(); 180} 181 182void wxDC::InitializeMGLDC() 183{ 184 if ( GetDepth() > 8 ) 185 { 186 wxCurrentDCSwitcher switcher(m_MGLDC); // will go away with MGL6 187 m_MGLDC->setFontBlendMode(MGL_AA_RGBBLEND); 188 } 189} 190 191 192// --------------------------------------------------------------------------- 193// clipping 194// --------------------------------------------------------------------------- 195 196 197#define DO_SET_CLIPPING_BOX(rg) \ 198{ \ 199 wxRect rect = rg.GetBox(); \ 200 m_clipX1 = (wxCoord) XDEV2LOG(rect.GetLeft()); \ 201 m_clipY1 = (wxCoord) YDEV2LOG(rect.GetTop()); \ 202 m_clipX2 = (wxCoord) XDEV2LOG(rect.GetRight()); \ 203 m_clipY2 = (wxCoord) YDEV2LOG(rect.GetBottom()); \ 204} 205 206void wxDC::DoSetClippingRegion(wxCoord cx, wxCoord cy, wxCoord cw, wxCoord ch) 207{ 208 wxCHECK_RET( Ok(), wxT("invalid dc") ); 209 210 wxRect rect(XLOG2DEV(cx), YLOG2DEV(cy), XLOG2DEVREL(cw), YLOG2DEVREL(ch)); 211 212 if ( !m_currentClippingRegion.IsNull() ) 213 m_currentClippingRegion.Intersect(rect); 214 else 215 m_currentClippingRegion.Union(rect); 216 217 m_MGLDC->setClipRegion(m_currentClippingRegion.GetMGLRegion()); 218 219 m_clipping = true; 220 DO_SET_CLIPPING_BOX(m_currentClippingRegion) 221} 222 223void wxDC::DoSetClippingRegionAsRegion(const wxRegion& region) 224{ 225 wxCHECK_RET( Ok(), wxT("invalid dc") ); 226 227 if ( region.IsEmpty() ) 228 { 229 DestroyClippingRegion(); 230 return; 231 } 232 233 wxRegion rg(region); 234 235 // check if the DC is scaled or moved, and if yes, then 236 // convert rg to device coordinates: 237 if ( m_deviceOriginX != 0 || m_deviceOriginY != 0 || 238 m_logicalOriginX != 0 || m_logicalOriginY != 0 || 239 XLOG2DEVREL(500) != 500 || YLOG2DEVREL(500) != 500 ) 240 { 241 region_t *mrg = rg.GetMGLRegion().rgnPointer(); 242 span_t *s; 243 segment_t *p; 244 for (s = mrg->spans; s; s = s->next) 245 { 246 s->y = YLOG2DEV(s->y); 247 for (p = s->seg; p; p = p->next) 248 p->x = XLOG2DEV(p->x); 249 } 250 } 251 252 if ( !m_currentClippingRegion.IsNull() ) 253 m_currentClippingRegion.Intersect(rg); 254 else 255 m_currentClippingRegion.Union(rg); 256 257 m_MGLDC->setClipRegion(m_currentClippingRegion.GetMGLRegion()); 258 259 m_clipping = true; 260 DO_SET_CLIPPING_BOX(m_currentClippingRegion) 261} 262 263void wxDC::DestroyClippingRegion() 264{ 265 wxCHECK_RET( Ok(), wxT("invalid dc") ); 266 267 if ( !m_globalClippingRegion.IsNull() ) 268 { 269 m_MGLDC->setClipRegion(m_globalClippingRegion.GetMGLRegion()); 270 m_currentClippingRegion = m_globalClippingRegion; 271 m_clipping = true; 272 } 273 else 274 { 275 m_MGLDC->setClipRect(MGLRect(0, 0, m_MGLDC->sizex()+1, m_MGLDC->sizey()+1)); 276 ResetClipping(); 277 m_currentClippingRegion.Clear(); 278 } 279} 280 281// --------------------------------------------------------------------------- 282// query capabilities 283// --------------------------------------------------------------------------- 284 285bool wxDC::CanDrawBitmap() const 286{ 287 return true; 288} 289 290bool wxDC::CanGetTextExtent() const 291{ 292 return true; 293} 294 295int wxDC::GetDepth() const 296{ 297 return m_MGLDC->getBitsPerPixel(); 298} 299 300// --------------------------------------------------------------------------- 301// drawing 302// --------------------------------------------------------------------------- 303 304void wxDC::Clear() 305{ 306 wxCHECK_RET( Ok(), wxT("invalid dc") ); 307 308 m_MGLDC->makeCurrent(); // will go away with MGL6.0 309 if ( m_backgroundBrush.GetStyle() != wxTRANSPARENT ) 310 { 311 int w, h; 312 wxBrush oldb = m_brush; 313 SetBrush(m_backgroundBrush); 314 SelectBrush(); 315 GetSize(&w, &h); 316 m_MGLDC->fillRect(0, 0, w, h); 317 SetBrush(oldb); 318 } 319} 320 321extern bool wxDoFloodFill(wxDC *dc, wxCoord x, wxCoord y, 322 const wxColour & col, int style); 323 324bool wxDC::DoFloodFill(wxCoord x, wxCoord y, 325 const wxColour& col, int style) 326{ 327 return wxDoFloodFill(this, x, y, col, style); 328} 329 330bool wxDC::DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const 331{ 332 wxCHECK_MSG( col, false, _T("NULL colour parameter in wxDC::GetPixel")); 333 334 uchar r, g, b; 335 m_MGLDC->unpackColorFast(m_MGLDC->getPixel(XLOG2DEV(x), YLOG2DEV(y)), 336 r, g, b); 337 col->Set(r, g, b); 338 return true; 339} 340 341void wxDC::DoCrossHair(wxCoord x, wxCoord y) 342{ 343 wxCHECK_RET( Ok(), wxT("invalid dc") ); 344 345 if ( m_pen.GetStyle() != wxTRANSPARENT ) 346 { 347 int w = 0; 348 int h = 0; 349 GetSize(&w, &h); 350 m_MGLDC->makeCurrent(); // will go away with MGL6.0 351 if ( !m_penSelected ) 352 SelectPen(); 353 wxCoord xx = XLOG2DEV(x); 354 wxCoord yy = YLOG2DEV(y); 355 m_MGLDC->line(m_penOfsX, yy + m_penOfsY, w-1 + m_penOfsX, yy + m_penOfsY); 356 m_MGLDC->line(xx + m_penOfsX, m_penOfsY, x + m_penOfsX, h-1 + m_penOfsY); 357 CalcBoundingBox(0, 0); 358 CalcBoundingBox(w, h); 359 } 360} 361 362void wxDC::DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2) 363{ 364 wxCHECK_RET( Ok(), wxT("invalid dc") ); 365 366 if ( m_pen.GetStyle() != wxTRANSPARENT ) 367 { 368 m_MGLDC->makeCurrent(); // will go away with MGL6.0 369 if ( !m_penSelected ) 370 SelectPen(); 371 m_MGLDC->lineExt(XLOG2DEV(x1) + m_penOfsX, YLOG2DEV(y1) + m_penOfsY, 372 XLOG2DEV(x2) + m_penOfsX, YLOG2DEV(y2) + m_penOfsY,FALSE); 373 CalcBoundingBox(x1, y1); 374 CalcBoundingBox(x2, y2); 375 } 376} 377 378// Draws an arc of a circle, centred on (xc, yc), with starting point (x1, y1) 379// and ending at (x2, y2) 380void wxDC::DoDrawArc(wxCoord x1, wxCoord y1, 381 wxCoord x2, wxCoord y2, 382 wxCoord xc, wxCoord yc) 383{ 384 wxCHECK_RET( Ok(), wxT("invalid dc") ); 385 386 wxCoord xx1 = XLOG2DEV(x1); 387 wxCoord yy1 = YLOG2DEV(y1); 388 wxCoord xx2 = XLOG2DEV(x2); 389 wxCoord yy2 = YLOG2DEV(y2); 390 wxCoord xxc = XLOG2DEV(xc); 391 wxCoord yyc = YLOG2DEV(yc); 392 double dx = xx1 - xxc; 393 double dy = yy1 - yyc; 394 double radius = sqrt((double)(dx*dx+dy*dy)); 395 wxCoord r = (wxCoord)radius; 396 double radius1, radius2; 397 398 399 if (xx1 == xx2 && yy1 == yy2) 400 { 401 radius1 = 0.0; 402 radius2 = 360.0; 403 } 404 else if (radius == 0.0) 405 { 406 radius1 = radius2 = 0.0; 407 } 408 else 409 { 410 radius1 = (xx1 - xxc == 0) ? 411 (yy1 - yyc < 0) ? 90.0 : -90.0 : 412 -atan2(double(yy1-yyc), double(xx1-xxc)) * RAD2DEG; 413 radius2 = (xx2 - xxc == 0) ? 414 (yy2 - yyc < 0) ? 90.0 : -90.0 : 415 -atan2(double(yy2-yyc), double(xx2-xxc)) * RAD2DEG; 416 } 417 wxCoord alpha1 = wxCoord(radius1); 418 wxCoord alpha2 = alpha1 + wxCoord(radius2 - radius1); 419 while (alpha2 <= 0) alpha2 += 360; 420 while (alpha1 > 360) alpha1 -= 360; 421 422 m_MGLDC->makeCurrent(); // will go away with MGL6.0 423 if ( m_brush.GetStyle() != wxTRANSPARENT ) 424 { 425 if ( !m_brushSelected ) 426 SelectBrush(); 427 m_MGLDC->fillEllipseArc(xxc, yyc, r, r, alpha1, alpha2); 428 } 429 430 if ( m_pen.GetStyle() != wxTRANSPARENT ) 431 { 432 if ( !m_penSelected ) 433 SelectPen(); 434 m_MGLDC->ellipseArc(xxc + m_penOfsX, yyc + m_penOfsY, r, r, alpha1, alpha2); 435 } 436 437 CalcBoundingBox(xc - r, yc - r); 438 CalcBoundingBox(xc + r, yc + r); 439} 440 441void wxDC::DoDrawPoint(wxCoord x, wxCoord y) 442{ 443 wxCHECK_RET( Ok(), wxT("invalid dc") ); 444 445 if ( m_pen.GetStyle() != wxTRANSPARENT ) 446 { 447 m_MGLDC->makeCurrent(); // will go away with MGL6.0 448 if ( !m_penSelected ) 449 SelectPen(); 450 m_MGLDC->pixel(XLOG2DEV(x), YLOG2DEV(y)); 451 CalcBoundingBox(x, y); 452 } 453} 454 455void wxDC::DoDrawPolygon(int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset,int WXUNUSED(fillStyle)) 456{ 457 wxCHECK_RET( Ok(), wxT("invalid dc") ); 458 459 wxCoord xxoffset = XLOG2DEVREL(xoffset), 460 yyoffset = YLOG2DEVREL(yoffset); 461 MGLPoint *cpoints = new MGLPoint[n+1]; 462 for (int i = 0; i < n; i++) 463 { 464 CalcBoundingBox(points[i].x + xoffset, points[i].y + yoffset); 465 cpoints[i].x = (int)(XLOG2DEV(points[i].x)); 466 cpoints[i].y = (int)(YLOG2DEV(points[i].y)); 467 } 468 cpoints[n] = cpoints[0]; 469 470 m_MGLDC->makeCurrent(); // will go away with MGL6.0 471 if ( m_brush.GetStyle() != wxTRANSPARENT ) 472 { 473 if ( !m_brushSelected ) 474 SelectBrush(); 475 m_MGLDC->fillPolygon(n, cpoints, xxoffset, yyoffset); 476 } 477 478 if ( m_pen.GetStyle() != wxTRANSPARENT ) 479 { 480 if ( !m_penSelected ) 481 SelectPen(); 482 if (m_penOfsX != 0 || m_penOfsY != 0) 483 { 484 for (int i = 0; i <= n; i++) 485 { 486 cpoints[i].x += m_penOfsX; 487 cpoints[i].y += m_penOfsY; 488 } 489 } 490 m_MGLDC->polyLine(n+1, cpoints); 491 } 492 493 delete[] cpoints; 494} 495 496void wxDC::DoDrawLines(int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset) 497{ 498 wxCHECK_RET( Ok(), wxT("invalid dc") ); 499 500 if ( m_pen.GetStyle() != wxTRANSPARENT ) 501 { 502 MGLPoint *cpoints = new MGLPoint[n]; 503 m_MGLDC->makeCurrent(); // will go away with MGL6.0 504 if ( !m_penSelected ) 505 SelectPen(); 506 for (int i = 0; i < n; i++) 507 { 508 CalcBoundingBox(points[i].x + xoffset, points[i].y + yoffset); 509 cpoints[i].x = (int)(XLOG2DEV(points[i].x + xoffset) /*+ m_penOfsX*/); 510 cpoints[i].y = (int)(YLOG2DEV(points[i].y + yoffset) /*+ m_penOfsY*/); 511 } 512 m_MGLDC->polyLine(n, cpoints); 513 delete[] cpoints; 514 } 515} 516 517void wxDC::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height) 518{ 519 wxCHECK_RET( Ok(), wxT("invalid dc") ); 520 521 wxCoord xx = XLOG2DEV(x); 522 wxCoord yy = YLOG2DEV(y); 523 wxCoord ww = m_signX * XLOG2DEVREL(width); 524 wxCoord hh = m_signY * YLOG2DEVREL(height); 525 526 if ( ww == 0 || hh == 0 ) return; 527 528 if ( ww < 0 ) 529 { 530 ww = -ww; 531 xx = xx - ww; 532 } 533 if ( hh < 0 ) 534 { 535 hh = -hh; 536 yy = yy - hh; 537 } 538 539 m_MGLDC->makeCurrent(); // will go away with MGL6.0 540 if ( m_brush.GetStyle() != wxTRANSPARENT ) 541 { 542 if ( !m_brushSelected ) 543 SelectBrush(); 544 m_MGLDC->fillRect(xx, yy, xx + ww, yy + hh); 545 } 546 547 if ( m_pen.GetStyle() != wxTRANSPARENT ) 548 { 549 if ( !m_penSelected ) 550 SelectPen(); 551 552 m_MGLDC->rect(xx + m_penOfsX, yy + m_penOfsY, 553 xx + ww + m_penOfsX, yy + hh + m_penOfsY); 554 } 555 556 CalcBoundingBox(x, y); 557 CalcBoundingBox(x + width, y + height); 558} 559 560void wxDC::DoDrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius) 561{ 562 wxCHECK_RET( Ok(), wxT("invalid dc") ); 563 564 if ( radius < 0.0 ) 565 radius = -radius * ((width < height) ? width : height); 566 567 wxCoord xx = XLOG2DEV(x); 568 wxCoord yy = YLOG2DEV(y); 569 wxCoord ww = m_signX * XLOG2DEVREL(width); 570 wxCoord hh = m_signY * YLOG2DEVREL(height); 571 wxCoord rr = XLOG2DEVREL((wxCoord)radius); 572 573 // CMB: handle -ve width and/or height 574 if ( ww < 0 ) 575 { 576 ww = -ww; 577 xx = xx - ww; 578 } 579 if ( hh < 0 ) 580 { 581 hh = -hh; 582 yy = yy - hh; 583 } 584 585 // CMB: if radius is zero use DrawRectangle() instead to avoid 586 // X drawing errors with small radii 587 if ( rr == 0 ) 588 { 589 DrawRectangle(x, y, width, height); 590 return; 591 } 592 593 // CMB: draw nothing if transformed w or h is 0 594 if ( ww == 0 || hh == 0 ) return; 595 596 // CMB: ensure dd is not larger than rectangle otherwise we 597 // get an hour glass shape 598 wxCoord dd = 2 * rr; 599 if ( dd > ww ) dd = ww; 600 if ( dd > hh ) dd = hh; 601 rr = dd / 2; 602 603 m_MGLDC->makeCurrent(); // will go away with MGL6.0 604 if ( m_brush.GetStyle() != wxTRANSPARENT ) 605 { 606 if (!m_brushSelected) 607 SelectBrush(); 608 m_MGLDC->fillRect(xx+rr, yy, xx+ww-rr, yy+hh); 609 m_MGLDC->fillRect(xx, yy+rr, xx+ww, yy+hh-rr); 610 m_MGLDC->fillEllipseArc(xx+rr, yy+rr, rr, rr, 90, 180); 611 m_MGLDC->fillEllipseArc(xx+ww-rr, yy+rr, rr, rr, 0, 90); 612 m_MGLDC->fillEllipseArc(xx+rr, yy+hh-rr, rr, rr, 180, 270); 613 m_MGLDC->fillEllipseArc(xx+ww-rr, yy+hh-rr, rr, rr, 270, 0); 614 } 615 616 if ( m_pen.GetStyle() != wxTRANSPARENT ) 617 { 618 if ( !m_penSelected ) 619 SelectPen(); 620 xx += m_penOfsX; 621 yy += m_penOfsY; 622 m_MGLDC->line(xx+rr+1, yy, xx+ww-rr, yy); 623 m_MGLDC->ellipseArc(xx+ww-rr, yy+rr, rr, rr, 0, 90); 624 m_MGLDC->line(xx+ww, yy+rr+1, xx+ww, yy+hh-rr); 625 m_MGLDC->ellipseArc(xx+ww-rr, yy+hh-rr, rr, rr, 270, 0); 626 m_MGLDC->line(xx+ww-rr, yy+hh, xx+rr+1, yy+hh); 627 m_MGLDC->ellipseArc(xx+rr, yy+hh-rr, rr, rr, 180, 270); 628 m_MGLDC->line(xx, yy+hh-rr, xx, yy+rr+1); 629 m_MGLDC->ellipseArc(xx+rr, yy+rr, rr, rr, 90, 180); 630 } 631 632 CalcBoundingBox(x, y); 633 CalcBoundingBox(x + width, y + height); 634} 635 636void wxDC::DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height) 637{ 638 wxCHECK_RET( Ok(), wxT("invalid dc") ); 639 640 wxCoord x2 = (x+width); 641 wxCoord y2 = (y+height); 642 643 m_MGLDC->makeCurrent(); // will go away with MGL6.0 644 if ( m_brush.GetStyle() != wxTRANSPARENT ) 645 { 646 if ( !m_brushSelected ) 647 SelectBrush(); 648 MGLRect rect(XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2), YLOG2DEV(y2)); 649 m_MGLDC->fillEllipse(rect); 650 } 651 652 if ( m_pen.GetStyle() != wxTRANSPARENT ) 653 { 654 if ( !m_penSelected ) 655 SelectPen(); 656 MGLRect rect(XLOG2DEV(x) + m_penOfsX, YLOG2DEV(y) + m_penOfsY, 657 XLOG2DEV(x2) + m_penOfsX, YLOG2DEV(y2) + m_penOfsY); 658 m_MGLDC->ellipse(rect); 659 } 660 661 CalcBoundingBox(x, y); 662 CalcBoundingBox(x2, y2); 663} 664 665void wxDC::DoDrawEllipticArc(wxCoord x,wxCoord y,wxCoord w,wxCoord h,double sa,double ea) 666{ 667 wxCHECK_RET( Ok(), wxT("invalid dc") ); 668 669 wxCoord x2 = (x+w); 670 wxCoord y2 = (y+h); 671 672 m_MGLDC->makeCurrent(); // will go away with MGL6.0 673 if ( m_brush.GetStyle() != wxTRANSPARENT ) 674 { 675 if (!m_brushSelected) SelectBrush(); 676 MGLRect rect(XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2), YLOG2DEV(y2)); 677 m_MGLDC->fillEllipseArc(rect, (int)sa, (int)ea); 678 } 679 680 if ( m_pen.GetStyle() != wxTRANSPARENT ) 681 { 682 if ( !m_penSelected ) 683 SelectPen(); 684 MGLRect rect(XLOG2DEV(x) + m_penOfsX, YLOG2DEV(y) + m_penOfsY, 685 XLOG2DEV(x2) + m_penOfsX, YLOG2DEV(y2) + m_penOfsY); 686 m_MGLDC->ellipseArc(rect, (int)sa, (int)ea); 687 } 688 689 CalcBoundingBox(x, y); 690 CalcBoundingBox(x2, y2); 691} 692 693void wxDC::DoDrawText(const wxString& text, wxCoord x, wxCoord y) 694{ 695 m_MGLDC->makeCurrent(); // will go away with MGL6.0 696 DrawAnyText(text, x, y); 697 698 // update the bounding box 699 wxCoord w, h; 700 CalcBoundingBox(x, y); 701 GetTextExtent(text, &w, &h); 702 CalcBoundingBox(x + w, y + h); 703} 704 705bool wxDC::SelectMGLFont() 706{ 707 if ( m_mglFont == NULL ) 708 { 709 float scale = m_scaleY; 710 bool antialiased = (GetDepth() > 8); 711 712 m_mglFont = m_font.GetMGLfont_t(scale, antialiased); 713 wxCHECK_MSG( m_mglFont, false, wxT("invalid font") ); 714 715 m_MGLDC->useFont(m_mglFont); 716 wxLogTrace("mgl_font", "useFont(%p)", m_mglFont); 717 718#if !wxUSE_UNICODE 719 wxNativeEncodingInfo nativeEnc; 720 wxFontEncoding encoding = m_font.GetEncoding(); 721 if ( !wxGetNativeFontEncoding(encoding, &nativeEnc) || 722 !wxTestFontEncoding(nativeEnc) ) 723 { 724#if wxUSE_FONTMAP 725 if ( !wxFontMapper::Get()->GetAltForEncoding(encoding, &nativeEnc) ) 726#endif 727 { 728 nativeEnc.mglEncoding = MGL_ENCODING_ASCII; 729 } 730 } 731 m_MGLDC->setTextEncoding(nativeEnc.mglEncoding); 732#endif 733 } 734 return true; 735} 736 737void wxDC::DrawAnyText(const wxString& text, wxCoord x, wxCoord y) 738{ 739 wxCHECK_RET( Ok(), wxT("invalid dc") ); 740 741 SelectMGLFont(); 742 743 // Render the text: 744 wxCoord xx = XLOG2DEV(x); 745 wxCoord yy = YLOG2DEV(y); 746 747 m_MGLDC->setLineStyle(MGL_LINE_STIPPLE); 748 m_MGLDC->setLineStipple(0xFFFF); 749 m_MGLDC->setPenSize(1, 1); 750 m_MGLDC->setPenStyle(MGL_BITMAP_SOLID); 751 752#if wxUSE_UNICODE 753 const wchar_t *c_text = text.c_str(); 754#else 755 const char *c_text = text.c_str(); 756#endif 757 758#if 1 759 // FIXME_MGL - this is a temporary hack in absence of proper 760 // implementation of solid text background in MGL. Once 761 // the bug in MGL is fixed, this code should be nuked 762 // immediately. Note that the code is not 100% correct; 763 // it only works with wxCOPY logical function 764 if ( m_backgroundMode == wxSOLID ) 765 { 766 int w = m_MGLDC->textWidth(c_text); 767 int h = m_MGLDC->textHeight(); 768 m_MGLDC->setColor(m_MGLDC->packColorFast(m_textBackgroundColour.Red(), 769 m_textBackgroundColour.Green(), m_textBackgroundColour.Blue())); 770 m_MGLDC->fillRect(xx, yy, xx+w, yy+h); 771 } 772#endif 773 774 m_MGLDC->setColor(m_MGLDC->packColorFast(m_textForegroundColour.Red(), 775 m_textForegroundColour.Green(), m_textForegroundColour.Blue())); 776 m_MGLDC->setBackColor(m_MGLDC->packColorFast(m_textBackgroundColour.Red(), 777 m_textBackgroundColour.Green(), m_textBackgroundColour.Blue())); 778 779 m_MGLDC->drawStr(xx, yy, c_text); 780 781 // Render underline: 782 if ( m_font.GetUnderlined() ) 783 { 784 int x1 = xx, y1 = yy; 785 int x2 = 0 , y2 = 0; 786 int w = m_MGLDC->textWidth(c_text); 787 m_MGLDC->underScoreLocation(x1, y1, c_text); 788 switch (m_MGLDC->getTextDirection()) 789 { 790 case MGL_RIGHT_DIR: x2 = x1 + w, y2 = y1; break; 791 case MGL_LEFT_DIR: x2 = x1 - w, y2 = y1; break; 792 case MGL_UP_DIR: x2 = x1, y2 = y1 - w; break; 793 case MGL_DOWN_DIR: x2 = x1, y2 = y1 + w; break; 794 } 795 m_MGLDC->line(x1, y1, x2, y2); 796 } 797 798 m_penSelected = m_brushSelected = false; 799} 800 801void wxDC::DoDrawRotatedText(const wxString& text, 802 wxCoord x, wxCoord y, 803 double angle) 804{ 805 m_MGLDC->makeCurrent(); // will go away with MGL6.0 806 807 if ( angle == 0 ) 808 { 809 DoDrawText(text, x, y); 810 return; 811 } 812 else if ( angle == 90.0 ) 813 m_MGLDC->setTextDirection(MGL_UP_DIR); 814 else if ( angle == 180.0 ) 815 m_MGLDC->setTextDirection(MGL_LEFT_DIR); 816 else if ( angle == 270.0 ) 817 m_MGLDC->setTextDirection(MGL_DOWN_DIR); 818 else 819 { 820 // FIXME_MGL -- implement once MGL supports it 821 wxFAIL_MSG(wxT("wxMGL only supports rotated text with angle 0,90,180 or 270")); 822 return; 823 } 824 825 DrawAnyText(text, x, y); 826 827 // Restore default: 828 m_MGLDC->setTextDirection(MGL_RIGHT_DIR); 829} 830 831// --------------------------------------------------------------------------- 832// set GDI objects 833// --------------------------------------------------------------------------- 834 835void wxDC::SelectMGLStipplePen(int style) 836{ 837 ushort stipple; 838 839 switch (style) 840 { 841 case wxDOT: stipple = STIPPLE_wxDOT; break; 842 case wxLONG_DASH: stipple = STIPPLE_wxLONG_DASH; break; 843 case wxSHORT_DASH: stipple = STIPPLE_wxSHORT_DASH; break; 844 case wxDOT_DASH: stipple = STIPPLE_wxDOT_DASH; break; 845 default: stipple = STIPPLE_wxSOLID; break; 846 } 847 848 m_MGLDC->setLineStyle(MGL_LINE_STIPPLE); 849 m_MGLDC->setLineStipple(stipple); 850 m_MGLDC->setPenSize(1, 1); 851 m_MGLDC->setPenStyle(MGL_BITMAP_SOLID); 852 m_penOfsY = m_penOfsX = 0; 853} 854 855// Accepted valus of SelectMGLFatPen's 2nd argument 856enum { 857 wxMGL_SELECT_FROM_PEN, 858 wxMGL_SELECT_FROM_BRUSH 859}; 860 861void wxDC::SelectMGLFatPen(int style, int flag) 862{ 863 MGL_penStyleType penstyle; 864 const pattern_t *pattern = NULL; 865 pixpattern24_t *pixPattern = NULL; 866 int wx, wy; 867 int slot; 868 869 // Since MGL pens may be created from wxBrush or wxPen and we often 870 // switch between pens and brushes, we take advantage of MGL's ability 871 // to have multiple (pix)pattern_t's loaded. We always download pen 872 // to 0th slot and brush to 1st slot. 873 if ( flag == wxMGL_SELECT_FROM_PEN ) 874 slot = 0; 875 else 876 slot = 1; 877 878 // compute pen's width: 879 if ( m_pen.GetWidth() <= 1 ) 880 { 881 wx = wy = 1; 882 m_penOfsX = m_penOfsY = 0; 883 } 884 else 885 { 886 wx = (int)(0.5 + fabs((double) XLOG2DEVREL(m_pen.GetWidth()))); 887 wy = (int)(0.5 + fabs((double) YLOG2DEVREL(m_pen.GetWidth()))); 888 m_penOfsX = -wx/2; 889 m_penOfsY = -wy/2; 890 } 891 892 // find pen's type: 893 penstyle = MGL_BITMAP_TRANSPARENT; 894 switch (style) 895 { 896 case wxBDIAGONAL_HATCH: pattern = &PATTERN_wxBDIAGONAL_HATCH; 897 penstyle = MGL_BITMAP_TRANSPARENT; 898 break; 899 case wxCROSSDIAG_HATCH: pattern = &PATTERN_wxCROSSDIAG_HATCH; 900 penstyle = MGL_BITMAP_TRANSPARENT; 901 break; 902 case wxFDIAGONAL_HATCH: pattern = &PATTERN_wxFDIAGONAL_HATCH; 903 penstyle = MGL_BITMAP_TRANSPARENT; 904 break; 905 case wxCROSS_HATCH: pattern = &PATTERN_wxCROSS_HATCH; 906 penstyle = MGL_BITMAP_TRANSPARENT; 907 break; 908 case wxHORIZONTAL_HATCH: pattern = &PATTERN_wxHORIZONTAL_HATCH; 909 penstyle = MGL_BITMAP_TRANSPARENT; 910 break; 911 case wxVERTICAL_HATCH: pattern = &PATTERN_wxVERTICAL_HATCH; 912 penstyle = MGL_BITMAP_TRANSPARENT; 913 break; 914 915 case wxSTIPPLE: 916 if ( flag == wxMGL_SELECT_FROM_PEN ) 917 pixPattern = (pixpattern24_t*) m_pen.GetPixPattern(); 918 else 919 pixPattern = (pixpattern24_t*) m_brush.GetPixPattern(); 920 penstyle = MGL_PIXMAP; 921 break; 922 923 case wxSTIPPLE_MASK_OPAQUE: 924 pattern = (pattern_t*) m_brush.GetMaskPattern(); 925 penstyle = MGL_BITMAP_OPAQUE; 926 break; 927 928 case wxSOLID: 929 default: 930 penstyle = MGL_BITMAP_SOLID; break; 931 } 932 933 // ...and finally, pass the pen to MGL: 934 935 if ( pattern ) 936 { 937 if ( !m_downloadedPatterns[slot] ) 938 { 939 m_MGLDC->setPenBitmapPattern(slot, pattern); 940 m_downloadedPatterns[slot] = true; 941 } 942 m_MGLDC->usePenBitmapPattern(slot); 943 } 944 945 if ( pixPattern ) 946 { 947 if ( !m_downloadedPatterns[slot] ) 948 { 949 pixpattern_t pix; 950 int x, y, c; 951 952 switch (GetDepth()) 953 { 954 case 8: 955 for (y = 0; y < 8; y++) 956 for (x = 0; x < 8; x++) 957 pix.b8.p[x][y] = (uchar)m_MGLDC->packColorFast( 958 pixPattern->p[x][y][0], 959 pixPattern->p[x][y][1], 960 pixPattern->p[x][y][2]); 961 break; 962 case 15: 963 case 16: 964 for (y = 0; y < 8; y++) 965 for (x = 0; x < 8; x++) 966 pix.b16.p[x][y] = (M_uint16)m_MGLDC->packColorFast( 967 pixPattern->p[x][y][0], 968 pixPattern->p[x][y][1], 969 pixPattern->p[x][y][2]); 970 break; 971 case 24: 972 for (y = 0; y < 8; y++) 973 for (x = 0; x < 8; x++) 974 for (c = 0; c < 3; c++) 975 pix.b24.p[x][y][c] = pixPattern->p[x][y][c]; 976 break; 977 case 32: 978 for (y = 0; y < 8; y++) 979 for (x = 0; x < 8; x++) 980 pix.b32.p[x][y] = m_MGLDC->packColorFast( 981 pixPattern->p[x][y][0], 982 pixPattern->p[x][y][1], 983 pixPattern->p[x][y][2]); 984 break; 985 default: 986 wxFAIL_MSG(_T("invalid DC depth")); 987 break; 988 } 989 m_MGLDC->setPenPixmapPattern(slot, &pix); 990 m_downloadedPatterns[slot] = true; 991 } 992 m_MGLDC->usePenPixmapPattern(slot); 993 } 994 995 m_MGLDC->setLineStyle(MGL_LINE_PENSTYLE); 996 m_MGLDC->setPenStyle(penstyle); 997 m_MGLDC->setPenSize(wy, wx); 998} 999 1000void wxDC::SelectPen() 1001{ 1002 wxCHECK_RET( Ok(), wxT("invalid dc") ); 1003 1004 wxColour& clr = m_pen.GetColour(); 1005 m_MGLDC->makeCurrent(); // will go away with MGL6.0 1006 m_MGLDC->setColorRGB(clr.Red(), clr.Green(), clr.Blue()); 1007 1008 switch (m_pen.GetStyle()) 1009 { 1010 case wxTRANSPARENT: 1011 break; 1012 1013 case wxDOT: 1014 case wxLONG_DASH: 1015 case wxSHORT_DASH: 1016 case wxDOT_DASH: 1017 SelectMGLStipplePen(m_pen.GetStyle()); 1018 break; 1019 1020 case wxBDIAGONAL_HATCH: 1021 case wxCROSSDIAG_HATCH: 1022 case wxFDIAGONAL_HATCH: 1023 case wxCROSS_HATCH: 1024 case wxHORIZONTAL_HATCH: 1025 case wxVERTICAL_HATCH: 1026 SelectMGLFatPen(m_pen.GetStyle(), wxMGL_SELECT_FROM_PEN); 1027 break; 1028 1029 case wxSTIPPLE: 1030 SelectMGLFatPen(m_pen.GetStyle(), wxMGL_SELECT_FROM_PEN); 1031 break; 1032 1033 case wxSOLID: 1034 case wxUSER_DASH: 1035 default: 1036 if ( m_pen.GetWidth() <= 1 ) 1037 SelectMGLStipplePen(wxSOLID); 1038 else 1039 SelectMGLFatPen(wxSOLID, wxMGL_SELECT_FROM_PEN); 1040 break; 1041 } 1042 m_penSelected = true; 1043 m_brushSelected = false; 1044} 1045 1046void wxDC::SelectBrush() 1047{ 1048 wxCHECK_RET( Ok(), wxT("invalid dc") ); 1049 1050 wxColour fg, bg; 1051 m_MGLDC->makeCurrent(); // will go away with MGL6.0 1052 1053 if ( m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE ) 1054 { 1055 fg = m_textForegroundColour; 1056 bg = m_textBackgroundColour; 1057 } 1058 else 1059 { 1060 fg = m_brush.GetColour(); 1061 bg = m_backgroundBrush.GetColour(); 1062 } 1063 1064 m_MGLDC->setColorRGB(fg.Red(), fg.Green(), fg.Blue()); 1065 m_MGLDC->setBackColor(m_MGLDC->packColorFast(bg.Red(), bg.Green(), bg.Blue())); 1066 m_penSelected = false; 1067 m_brushSelected = true; 1068 1069 SelectMGLFatPen(m_brush.GetStyle(), wxMGL_SELECT_FROM_BRUSH); 1070} 1071 1072void wxDC::SetPen(const wxPen& pen) 1073{ 1074 if ( !pen.Ok() ) return; 1075 if ( m_pen == pen ) return; 1076 m_pen = pen; 1077 m_penSelected = false; 1078 m_downloadedPatterns[0] = false; 1079} 1080 1081void wxDC::SetBrush(const wxBrush& brush) 1082{ 1083 if ( !brush.Ok() ) return; 1084 if ( m_brush == brush ) return; 1085 m_brush = brush; 1086 m_brushSelected = false; 1087 m_downloadedPatterns[1] = false; 1088} 1089 1090void wxDC::SetPalette(const wxPalette& palette) 1091{ 1092 wxCHECK_RET( Ok(), wxT("invalid dc") ); 1093 1094 if ( !palette.Ok() ) 1095 { 1096 if ( m_oldPalette.Ok() ) 1097 SetPalette(m_oldPalette); 1098 return; 1099 } 1100 1101 if ( palette.IsSameAs(m_palette) ) 1102 return; 1103 1104 m_oldPalette = m_palette; 1105 m_palette = palette; 1106 1107 int cnt = m_palette.GetColoursCount(); 1108 palette_t *pal = m_palette.GetMGLpalette_t(); 1109 m_MGLDC->setPalette(pal, cnt, 0); 1110 m_MGLDC->realizePalette(cnt, 0, TRUE); 1111} 1112 1113void wxDC::SetFont(const wxFont& font) 1114{ 1115 if ( font.Ok() ) 1116 { 1117 m_font = font; 1118 m_mglFont = NULL; 1119 } 1120} 1121 1122void wxDC::SetBackground(const wxBrush& brush) 1123{ 1124 wxCHECK_RET( Ok(), wxT("invalid dc") ); 1125 1126 if (!brush.Ok()) return; 1127 1128 m_backgroundBrush = brush; 1129 wxColour &clr = m_backgroundBrush.GetColour(); 1130 m_MGLDC->makeCurrent(); // will go away with MGL6.0 1131 m_MGLDC->setBackColor( 1132 m_MGLDC->packColorFast(clr.Red(), clr.Green(), clr.Blue())); 1133} 1134 1135void wxDC::SetBackgroundMode(int mode) 1136{ 1137 m_backgroundMode = mode; 1138 if ( mode == wxSOLID ) 1139 m_MGLDC->setBackMode(MGL_OPAQUE_BACKGROUND); 1140 else 1141 m_MGLDC->setBackMode(MGL_TRANSPARENT_BACKGROUND); 1142} 1143 1144void wxDC::SetLogicalFunction(int function) 1145{ 1146 wxCHECK_RET( Ok(), wxT("invalid dc") ); 1147 1148 m_logicalFunction = function; 1149 1150 m_MGLDC->makeCurrent(); // will go away with MGL6.0 1151 m_MGLDC->setWriteMode(LogicalFunctionToMGLRop(m_logicalFunction)); 1152} 1153 1154int wxDC::LogicalFunctionToMGLRop(int logFunc) const 1155{ 1156 MGL_writeModeType rop; 1157 1158 switch (logFunc) 1159 { 1160 case wxCLEAR: rop = MGL_R2_BLACK; break; 1161 case wxXOR: rop = MGL_R2_XORSRC; break; 1162 case wxINVERT: rop = MGL_R2_NOT; break; 1163 case wxOR_REVERSE: rop = MGL_R2_MERGESRCNOT; break; 1164 case wxAND_REVERSE: rop = MGL_R2_MASKSRCNOT; break; 1165 case wxCOPY: rop = MGL_R2_COPYSRC; break; 1166 case wxAND: rop = MGL_R2_MASKSRC; break; 1167 case wxAND_INVERT: rop = MGL_R2_MASKNOTSRC; break; 1168 case wxNO_OP: rop = MGL_R2_NOP; break; 1169 case wxNOR: rop = MGL_R2_NOTMERGESRC; break; 1170 case wxEQUIV: rop = MGL_R2_NOTXORSRC; break; 1171 case wxSRC_INVERT: rop = MGL_R2_NOTCOPYSRC; break; 1172 case wxOR_INVERT: rop = MGL_R2_MERGENOTSRC; break; 1173 case wxNAND: rop = MGL_R2_NOTMASKSRC; break; 1174 case wxOR: rop = MGL_R2_MERGESRC; break; 1175 case wxSET: rop = MGL_R2_WHITE; break; 1176 default: 1177 wxFAIL_MSG( wxT("unsupported logical function") ); 1178 return MGL_REPLACE_MODE; 1179 } 1180 return (int)rop; 1181} 1182 1183bool wxDC::StartDoc(const wxString& WXUNUSED(message)) 1184{ 1185 // We might be previewing, so return true to let it continue. 1186 return true; 1187} 1188 1189void wxDC::EndDoc() 1190{ 1191} 1192 1193void wxDC::StartPage() 1194{ 1195} 1196 1197void wxDC::EndPage() 1198{ 1199} 1200 1201// --------------------------------------------------------------------------- 1202// text metrics 1203// --------------------------------------------------------------------------- 1204 1205wxCoord wxDC::GetCharHeight() const 1206{ 1207 wxCurrentDCSwitcher switcher(m_MGLDC); 1208 if ( !wxConstCast(this, wxDC)->SelectMGLFont() ) return -1; 1209 return YDEV2LOGREL(m_mglFont->fontHeight); 1210} 1211 1212wxCoord wxDC::GetCharWidth() const 1213{ 1214 wxCurrentDCSwitcher switcher(m_MGLDC); 1215 if ( !wxConstCast(this, wxDC)->SelectMGLFont() ) return -1; 1216 // VS: wxT() is intentional, charWidth() has both char and wchar_t version 1217 // VS: YDEV is corrent, it should *not* be XDEV, because font's are only 1218 // scaled according to m_scaleY 1219 return YDEV2LOGREL(m_mglFont->fontWidth); 1220} 1221 1222void wxDC::DoGetTextExtent(const wxString& string, wxCoord *x, wxCoord *y, 1223 wxCoord *descent, wxCoord *externalLeading, 1224 wxFont *theFont) const 1225{ 1226 wxFont oldFont; 1227 1228 if ( theFont != NULL ) 1229 { 1230 oldFont = m_font; 1231 wxConstCast(this, wxDC)->SetFont(*theFont); 1232 } 1233 1234 wxCurrentDCSwitcher switcher(m_MGLDC); 1235 if ( !wxConstCast(this, wxDC)->SelectMGLFont() ) return; 1236 1237 if ( x ) 1238 // VS: YDEV is corrent, it should *not* be XDEV, because font's are 1239 // only scaled according to m_scaleY 1240 *x = YDEV2LOGREL(m_MGLDC->textWidth(string.c_str())); 1241 if ( y ) 1242 *y = YDEV2LOGREL(m_MGLDC->textHeight()); 1243 if ( descent ) 1244 *descent = YDEV2LOGREL(m_mglFont->descent); 1245 if ( externalLeading ) 1246 *externalLeading = YDEV2LOGREL(m_mglFont->leading); 1247 1248 if ( theFont != NULL ) 1249 wxConstCast(this, wxDC)->SetFont(oldFont); 1250} 1251 1252 1253 1254// --------------------------------------------------------------------------- 1255// mapping modes 1256// --------------------------------------------------------------------------- 1257 1258void wxDC::ComputeScaleAndOrigin() 1259{ 1260 double newX = m_logicalScaleX * m_userScaleX; 1261 double newY = m_logicalScaleY * m_userScaleY; 1262 1263 // make sure font will be reloaded before drawing: 1264 if ( newY != m_scaleY ) 1265 m_mglFont = NULL; 1266 // make sure m_penOfs{X,Y} will be reevaluated before drawing: 1267 if ( newY != m_scaleY || newX != m_scaleX ) 1268 m_penSelected = false; 1269 1270 m_scaleX = newX, m_scaleY = newY; 1271} 1272 1273void wxDC::SetMapMode(int mode) 1274{ 1275 switch (mode) 1276 { 1277 case wxMM_TWIPS: 1278 SetLogicalScale(twips2mm*m_mm_to_pix_x, twips2mm*m_mm_to_pix_y); 1279 break; 1280 case wxMM_POINTS: 1281 SetLogicalScale(pt2mm*m_mm_to_pix_x, pt2mm*m_mm_to_pix_y); 1282 break; 1283 case wxMM_METRIC: 1284 SetLogicalScale(m_mm_to_pix_x, m_mm_to_pix_y); 1285 break; 1286 case wxMM_LOMETRIC: 1287 SetLogicalScale(m_mm_to_pix_x/10.0, m_mm_to_pix_y/10.0); 1288 break; 1289 default: 1290 case wxMM_TEXT: 1291 SetLogicalScale(1.0, 1.0); 1292 break; 1293 } 1294 m_mappingMode = mode; 1295} 1296 1297void wxDC::SetUserScale( double x, double y ) 1298{ 1299 // allow negative ? -> no 1300 m_userScaleX = x; 1301 m_userScaleY = y; 1302 ComputeScaleAndOrigin(); 1303} 1304 1305void wxDC::SetLogicalScale( double x, double y ) 1306{ 1307 // allow negative ? 1308 m_logicalScaleX = x; 1309 m_logicalScaleY = y; 1310 ComputeScaleAndOrigin(); 1311} 1312 1313void wxDC::SetLogicalOrigin( wxCoord x, wxCoord y ) 1314{ 1315 m_logicalOriginX = x * m_signX; // is this still correct ? 1316 m_logicalOriginY = y * m_signY; 1317 ComputeScaleAndOrigin(); 1318} 1319 1320void wxDC::SetDeviceOrigin( wxCoord x, wxCoord y ) 1321{ 1322 // only wxPostScripDC has m_signX = -1, we override SetDeviceOrigin there 1323 m_deviceOriginX = x; 1324 m_deviceOriginY = y; 1325 ComputeScaleAndOrigin(); 1326} 1327 1328void wxDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp ) 1329{ 1330 // only wxPostScripDC has m_signX = -1, we override SetAxisOrientation there 1331 m_signX = (xLeftRight ? 1 : -1); 1332 m_signY = (yBottomUp ? -1 : 1); 1333 ComputeScaleAndOrigin(); 1334} 1335 1336// --------------------------------------------------------------------------- 1337// coordinates transformations 1338// --------------------------------------------------------------------------- 1339 1340wxCoord wxDCBase::DeviceToLogicalX(wxCoord x) const 1341{ 1342 return ((wxDC *)this)->XDEV2LOG(x); 1343} 1344 1345wxCoord wxDCBase::DeviceToLogicalY(wxCoord y) const 1346{ 1347 return ((wxDC *)this)->YDEV2LOG(y); 1348} 1349 1350wxCoord wxDCBase::DeviceToLogicalXRel(wxCoord x) const 1351{ 1352 return ((wxDC *)this)->XDEV2LOGREL(x); 1353} 1354 1355wxCoord wxDCBase::DeviceToLogicalYRel(wxCoord y) const 1356{ 1357 return ((wxDC *)this)->YDEV2LOGREL(y); 1358} 1359 1360wxCoord wxDCBase::LogicalToDeviceX(wxCoord x) const 1361{ 1362 return ((wxDC *)this)->XLOG2DEV(x); 1363} 1364 1365wxCoord wxDCBase::LogicalToDeviceY(wxCoord y) const 1366{ 1367 return ((wxDC *)this)->YLOG2DEV(y); 1368} 1369 1370wxCoord wxDCBase::LogicalToDeviceXRel(wxCoord x) const 1371{ 1372 return ((wxDC *)this)->XLOG2DEVREL(x); 1373} 1374 1375wxCoord wxDCBase::LogicalToDeviceYRel(wxCoord y) const 1376{ 1377 return ((wxDC *)this)->YLOG2DEVREL(y); 1378} 1379 1380 1381void wxDC::DoGetSize(int *w, int *h) const 1382{ 1383 if (w) *w = m_MGLDC->sizex()+1; 1384 if (h) *h = m_MGLDC->sizey()+1; 1385} 1386 1387void wxDC::DoGetSizeMM(int *width, int *height) const 1388{ 1389 int w = 0; 1390 int h = 0; 1391 GetSize(&w, &h); 1392 if ( width ) *width = int(double(w) / (m_userScaleX*m_mm_to_pix_x)); 1393 if ( height ) *height = int(double(h) / (m_userScaleY*m_mm_to_pix_y)); 1394} 1395 1396wxSize wxDC::GetPPI() const 1397{ 1398 return wxSize(int(double(m_mm_to_pix_x) * inches2mm), 1399 int(double(m_mm_to_pix_y) * inches2mm)); 1400} 1401 1402 1403// --------------------------------------------------------------------------- 1404// Blitting 1405// --------------------------------------------------------------------------- 1406 1407bool wxDC::DoBlit(wxCoord xdest, wxCoord ydest, 1408 wxCoord width, wxCoord height, 1409 wxDC *source, wxCoord xsrc, wxCoord ysrc, 1410 int rop, bool useMask, 1411 wxCoord xsrcMask, wxCoord ysrcMask) 1412{ 1413 wxCHECK_MSG( Ok(), false, wxT("invalid dc") ); 1414 wxCHECK_MSG( source, false, wxT("invalid source dc") ); 1415 1416 // transform the source DC coords to the device ones 1417 xsrc = source->LogicalToDeviceX(xsrc); 1418 ysrc = source->LogicalToDeviceY(ysrc); 1419 1420 /* FIXME_MGL: use the mask origin when drawing transparently */ 1421 if (xsrcMask == -1 && ysrcMask == -1) 1422 { 1423 xsrcMask = xsrc; ysrcMask = ysrc; 1424 } 1425 else 1426 { 1427 xsrcMask = source->LogicalToDeviceX(xsrcMask); 1428 ysrcMask = source->LogicalToDeviceY(ysrcMask); 1429 } 1430 1431 CalcBoundingBox(xdest, ydest); 1432 CalcBoundingBox(xdest + width, ydest + height); 1433 1434 /* scale/translate size and position */ 1435 wxCoord xx = XLOG2DEV(xdest); 1436 wxCoord yy = YLOG2DEV(ydest); 1437 1438 if ( source->m_isMemDC ) 1439 { 1440 wxMemoryDC *memDC = (wxMemoryDC*) source; 1441 DoDrawSubBitmap(memDC->GetSelectedObject(), 1442 xsrc, ysrc, width, height, 1443 xdest, ydest, rop, useMask); 1444 } 1445 else 1446 { 1447 wxCoord ww = XLOG2DEVREL(width); 1448 wxCoord hh = YLOG2DEVREL(height); 1449 1450 m_MGLDC->makeCurrent(); // will go away with MGL6.0 1451 m_MGLDC->bitBlt(*source->GetMGLDC(), 1452 xsrc, ysrc, xsrc + ww, ysrc + hh, 1453 xx, yy, LogicalFunctionToMGLRop(rop)); 1454 } 1455 1456 return true; 1457} 1458 1459void wxDC::DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y, bool useMask) 1460{ 1461 wxCHECK_RET( Ok(), wxT("invalid dc") ); 1462 wxCHECK_RET( bmp.Ok(), wxT("invalid bitmap") ); 1463 1464 wxCoord w = bmp.GetWidth(); 1465 wxCoord h = bmp.GetHeight(); 1466 1467 DoDrawSubBitmap(bmp, 0, 0, w, h, x, y, m_logicalFunction, useMask); 1468} 1469 1470void wxDC::DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y) 1471{ 1472 // VZ: egcs 1.0.3 refuses to compile this without cast, no idea why 1473 DoDrawBitmap((const wxBitmap&)icon, x, y, true); 1474} 1475 1476 1477static inline void DoBitBlt(const wxBitmap& src, MGLDevCtx *dst, 1478 int sx, int sy, int sw, int sh, 1479 int dx, int dy, int dw, int dh, 1480 int rop, bool useStretching, bool putSection) 1481{ 1482 bitmap_t *bmp = src.GetMGLbitmap_t(); 1483 if (!useStretching) 1484 { 1485 if (!putSection) 1486 dst->putBitmap(dx, dy, bmp, rop); 1487 else 1488 dst->putBitmapSection(sx, sy, sx + sw, sy + sh, dx, dy, bmp, rop); 1489 } 1490 else 1491 { 1492 if (!putSection) 1493 dst->stretchBitmap(dx, dy, dx + dw, dy + dh, bmp, rop); 1494 else 1495 dst->stretchBitmapSection(sx, sy, sx + sw, sy + sh, 1496 dx, dy, dx + dw, dy + dh, bmp, rop); 1497 } 1498} 1499 1500void wxDC::DoDrawSubBitmap(const wxBitmap &bmp, 1501 wxCoord x, wxCoord y, wxCoord w, wxCoord h, 1502 wxCoord destx, wxCoord desty, int rop, bool useMask) 1503{ 1504 wxCHECK_RET( Ok(), wxT("invalid dc") ); 1505 wxCHECK_RET( bmp.Ok(), wxT("invalid bitmap") ); 1506 1507 CalcBoundingBox(x, y); 1508 CalcBoundingBox(x + w, y + h); 1509 1510 wxCoord dx = XLOG2DEV(destx); 1511 wxCoord dy = YLOG2DEV(desty); 1512 wxCoord dw = XLOG2DEVREL(w); 1513 wxCoord dh = YLOG2DEVREL(h); 1514 1515 m_MGLDC->makeCurrent(); // will go away with MGL6.0 1516 1517 bool useStretching = ((w != dw) || (h != dh)); 1518 bool putSection = (w != bmp.GetWidth() || h != bmp.GetHeight()); 1519 MGL_writeModeType mglRop = (MGL_writeModeType)LogicalFunctionToMGLRop(rop); 1520 1521 if ( bmp.GetDepth() == 1 ) 1522 { 1523 // Mono bitmaps are handled in special way -- all 1s are drawn in 1524 // foreground colours, all 0s in background colour. 1525 1526 ((wxBitmap&)bmp).SetMonoPalette(m_textForegroundColour, m_textBackgroundColour); 1527 } 1528 1529 if ( useMask && bmp.GetMask() ) 1530 { 1531 // Since MGL does not support masks directly (in MGL, mask is handled 1532 // in same way as in wxImage, i.e. there is one "key" color), we 1533 // simulate masked bitblt in 6 steps (same as in MSW): 1534 // 1535 // 1. Create a temporary bitmap and copy the destination area into it. 1536 // 2. Copy the source area into the temporary bitmap using the 1537 // specified logical function. 1538 // 3. Set the masked area in the temporary bitmap to BLACK by ANDing 1539 // the mask bitmap with the temp bitmap with the foreground colour 1540 // set to WHITE and the bg colour set to BLACK. 1541 // 4. Set the unmasked area in the destination area to BLACK by 1542 // ANDing the mask bitmap with the destination area with the 1543 // foreground colour set to BLACK and the background colour set 1544 // to WHITE. 1545 // 5. OR the temporary bitmap with the destination area. 1546 // 6. Delete the temporary bitmap. 1547 // 1548 // This sequence of operations ensures that the source's transparent 1549 // area need not be black, and logical functions are supported. 1550 1551 wxBitmap mask = bmp.GetMask()->GetBitmap(); 1552 1553 MGLMemoryDC *temp; 1554 1555 if ( GetDepth() <= 8 ) 1556 { 1557 temp = new MGLMemoryDC(dw, dh, GetDepth(), NULL); 1558 wxDC tempdc; 1559 tempdc.SetMGLDC(temp, false); 1560 tempdc.SetPalette(m_palette); 1561 } 1562 else 1563 { 1564 pixel_format_t pf; 1565 m_MGLDC->getPixelFormat(pf); 1566 temp = new MGLMemoryDC(dw, dh, GetDepth(), &pf); 1567 } 1568 1569 wxCHECK_RET( temp->isValid(), wxT("cannot create temporary dc") ); 1570 1571 temp->bitBlt(*m_MGLDC, dx, dy, dx + dw, dy + dh, 0, 0, MGL_REPLACE_MODE); 1572 1573 DoBitBlt(bmp, temp, x, y, w, h, 0, 0, dw, dh, mglRop, 1574 useStretching, putSection); 1575 1576 mask.SetMonoPalette(wxColour(0,0,0), wxColour(255,255,255)); 1577 DoBitBlt(mask, temp, x, y, w, h, 0, 0, dw, dh, MGL_R2_MASKSRC, 1578 useStretching, putSection); 1579 DoBitBlt(mask, m_MGLDC, x, y, w, h, dx, dy, dw, dh, MGL_R2_MASKNOTSRC, 1580 useStretching, putSection); 1581 1582 m_MGLDC->bitBlt(*temp, 0, 0, dw, dh, dx, dy, MGL_OR_MODE); 1583 1584 delete temp; 1585 } 1586 1587 else 1588 { 1589 DoBitBlt(bmp, m_MGLDC, x, y, w, h, dx, dy, dw, dh, mglRop, 1590 useStretching, putSection); 1591 } 1592} 1593