src/gui/painting/qpaintengineex.cpp

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  41
  42 #include "qpaintengineex_p.h"
  43 #include "qpainter_p.h"
  44 #include "qstroker_p.h"
  45 #include "qbezier_p.h"
  46 #include <private/qpainterpath_p.h>
  47
  48 #include <qvarlengtharray.h>
  49 #include <qdebug.h>
  50
  51
  52 QT_BEGIN_NAMESPACE
  53
  54 /*******************************************************************************
  55  *
  56  * class QVectorPath
  57  *
  58  */
  59 QVectorPath::~QVectorPath()
  60 {
  61     if (m_hints & ShouldUseCacheHint) {
  62         CacheEntry *e = m_cache;
  63         while (e) {
  64             if (e->data)
  65                 e->cleanup(e->engine, e->data);
  66             CacheEntry *n = e->next;
  67             delete e;
  68             e = n;
  69         }
  70     }
  71 }
  72
  73
  74 QRectF QVectorPath::controlPointRect() const
  75 {
  76     if (m_hints & ControlPointRect)
  77         return QRectF(QPointF(m_cp_rect.x1, m_cp_rect.y1), QPointF(m_cp_rect.x2, m_cp_rect.y2));
  78
  79     if (m_count == 0) {
  80         m_cp_rect.x1 = m_cp_rect.x2 = m_cp_rect.y1 = m_cp_rect.y2 = 0;
  81         m_hints |= ControlPointRect;
  82         return QRectF(QPointF(m_cp_rect.x1, m_cp_rect.y1), QPointF(m_cp_rect.x2, m_cp_rect.y2));
  83     }
  84     Q_ASSERT(m_points && m_count > 0);
  85
  86     const qreal *pts = m_points;
  87     m_cp_rect.x1 = m_cp_rect.x2 = *pts;
  88     ++pts;
  89     m_cp_rect.y1 = m_cp_rect.y2 = *pts;
  90     ++pts;
  91
  92     const qreal *epts = m_points + (m_count << 1);
  93     while (pts < epts) {
  94         qreal x = *pts;
  95         if (x < m_cp_rect.x1) m_cp_rect.x1 = x;
  96         else if (x > m_cp_rect.x2) m_cp_rect.x2 = x;
  97         ++pts;
  98
  99         qreal y = *pts;
 100         if (y < m_cp_rect.y1) m_cp_rect.y1 = y;
 101         else if (y > m_cp_rect.y2) m_cp_rect.y2 = y;
 102         ++pts;
 103     }
 104
 105     m_hints |= ControlPointRect;
 106     return QRectF(QPointF(m_cp_rect.x1, m_cp_rect.y1), QPointF(m_cp_rect.x2, m_cp_rect.y2));
 107 }
 108
 109
 110 QVectorPath::CacheEntry *QVectorPath::addCacheData(QPaintEngineEx *engine, void *data,
 111                                                    qvectorpath_cache_cleanup cleanup) const{
 112     Q_ASSERT(!lookupCacheData(engine));
 113     if ((m_hints & IsCachedHint) == 0) {
 114         m_cache = 0;
 115         m_hints |= IsCachedHint;
 116     }
 117     CacheEntry *e = new CacheEntry;
 118     e->engine = engine;
 119     e->data = data;
 120     e->cleanup = cleanup;
 121     e->next = m_cache;
 122     m_cache = e;
 123     return m_cache;
 124 }
 125
 126
 127 const QVectorPath &qtVectorPathForPath(const QPainterPath &path)
 128 {
 129     Q_ASSERT(path.d_func());
 130     return path.d_func()->vectorPath();
 131 }
 132
 133 #ifndef QT_NO_DEBUG_STREAM
 134 QDebug Q_GUI_EXPORT &operator<<(QDebug &s, const QVectorPath &path)
 135 {
 136     QRectF rf = path.controlPointRect();
 137     s << "QVectorPath(size:" << path.elementCount()
 138       << " hints:" << hex << path.hints()
 139       << rf << ')';
 140     return s;
 141 }
 142 #endif
 143
 144 /*******************************************************************************
 145  *
 146  * class QPaintEngineExPrivate:
 147  *
 148  */
 149
 150
 151 struct StrokeHandler {
 152     StrokeHandler(int reserve) : pts(reserve), types(reserve) {}
 153     QDataBuffer<qreal> pts;
 154     QDataBuffer<QPainterPath::ElementType> types;
 155 };
 156
 157
 158 QPaintEngineExPrivate::QPaintEngineExPrivate()
 159     : dasher(&stroker),
 160       strokeHandler(0),
 161       activeStroker(0),
 162       strokerPen(Qt::NoPen)
 163 {
 164 }
 165
 166
 167 QPaintEngineExPrivate::~QPaintEngineExPrivate()
 168 {
 169     delete strokeHandler;
 170 }
 171
 172
 173 void QPaintEngineExPrivate::replayClipOperations()
 174 {
 175     Q_Q(QPaintEngineEx);
 176
 177     QPainter *p = q->painter();
 178     if (!p || !p->d_ptr)
 179         return;
 180
 181     QList<QPainterClipInfo> clipInfo = p->d_ptr->state->clipInfo;
 182
 183     QTransform transform = q->state()->matrix;
 184
 185     for (int i = 0; i <  clipInfo.size(); ++i) {
 186         const QPainterClipInfo &info = clipInfo.at(i);
 187
 188         if (info.matrix != q->state()->matrix) {
 189             q->state()->matrix = info.matrix;
 190             q->transformChanged();
 191         }
 192
 193         switch (info.clipType) {
 194         case QPainterClipInfo::RegionClip:
 195             q->clip(info.region, info.operation);
 196             break;
 197         case QPainterClipInfo::PathClip:
 198             q->clip(info.path, info.operation);
 199             break;
 200         case QPainterClipInfo::RectClip:
 201             q->clip(info.rect, info.operation);
 202             break;
 203         case QPainterClipInfo::RectFClip: {
 204             qreal right = info.rectf.x() + info.rectf.width();
 205             qreal bottom = info.rectf.y() + info.rectf.height();
 206             qreal pts[] = { info.rectf.x(), info.rectf.y(),
 207                             right, info.rectf.y(),
 208                             right, bottom,
 209                             info.rectf.x(), bottom };
 210             QVectorPath vp(pts, 4, 0, QVectorPath::RectangleHint);
 211             q->clip(vp, info.operation);
 212             break;
 213             }
 214         }
 215     }
 216
 217     if (transform != q->state()->matrix) {
 218         q->state()->matrix = transform;
 219         q->transformChanged();
 220     }
 221 }
 222
 223
 224 bool QPaintEngineExPrivate::hasClipOperations() const
 225 {
 226     Q_Q(const QPaintEngineEx);
 227
 228     QPainter *p = q->painter();
 229     if (!p || !p->d_ptr)
 230         return false;
 231
 232     QList<QPainterClipInfo> clipInfo = p->d_ptr->state->clipInfo;
 233
 234     return !clipInfo.isEmpty();
 235 }
 236
 237 /*******************************************************************************
 238  *
 239  * class QPaintEngineEx:
 240  *
 241  */
 242
 243 static QPainterPath::ElementType qpaintengineex_ellipse_types[] = {
 244     QPainterPath::MoveToElement,
 245     QPainterPath::CurveToElement,
 246     QPainterPath::CurveToDataElement,
 247     QPainterPath::CurveToDataElement,
 248
 249     QPainterPath::CurveToElement,
 250     QPainterPath::CurveToDataElement,
 251     QPainterPath::CurveToDataElement,
 252
 253     QPainterPath::CurveToElement,
 254     QPainterPath::CurveToDataElement,
 255     QPainterPath::CurveToDataElement,
 256
 257     QPainterPath::CurveToElement,
 258     QPainterPath::CurveToDataElement,
 259     QPainterPath::CurveToDataElement
 260 };
 261
 262 static QPainterPath::ElementType qpaintengineex_line_types_16[] = {
 263     QPainterPath::MoveToElement, QPainterPath::LineToElement,
 264     QPainterPath::MoveToElement, QPainterPath::LineToElement,
 265     QPainterPath::MoveToElement, QPainterPath::LineToElement,
 266     QPainterPath::MoveToElement, QPainterPath::LineToElement,
 267     QPainterPath::MoveToElement, QPainterPath::LineToElement,
 268     QPainterPath::MoveToElement, QPainterPath::LineToElement,
 269     QPainterPath::MoveToElement, QPainterPath::LineToElement,
 270     QPainterPath::MoveToElement, QPainterPath::LineToElement,
 271     QPainterPath::MoveToElement, QPainterPath::LineToElement,
 272     QPainterPath::MoveToElement, QPainterPath::LineToElement,
 273     QPainterPath::MoveToElement, QPainterPath::LineToElement,
 274     QPainterPath::MoveToElement, QPainterPath::LineToElement,
 275     QPainterPath::MoveToElement, QPainterPath::LineToElement,
 276     QPainterPath::MoveToElement, QPainterPath::LineToElement,
 277     QPainterPath::MoveToElement, QPainterPath::LineToElement,
 278     QPainterPath::MoveToElement, QPainterPath::LineToElement
 279 };
 280
 281 static QPainterPath::ElementType qpaintengineex_rect4_types_32[] = {
 282     QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 1
 283     QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 2
 284     QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 3
 285     QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 4
 286     QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 5
 287     QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 6
 288     QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 7
 289     QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 8
 290     QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 9
 291     QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 10
 292     QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 11
 293     QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 12
 294     QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 13
 295     QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 14
 296     QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 15
 297     QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 16
 298     QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 17
 299     QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 18
 300     QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 19
 301     QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 20
 302     QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 21
 303     QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 22
 304     QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 23
 305     QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 24
 306     QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 25
 307     QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 26
 308     QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 27
 309     QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 28
 310     QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 29
 311     QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 30
 312     QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 31
 313     QPainterPath::MoveToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, QPainterPath::LineToElement, // 32
 314 };
 315
 316
 317 static QPainterPath::ElementType qpaintengineex_roundedrect_types[] = {
 318     QPainterPath::MoveToElement,
 319     QPainterPath::LineToElement,
 320     QPainterPath::CurveToElement,
 321     QPainterPath::CurveToDataElement,
 322     QPainterPath::CurveToDataElement,
 323     QPainterPath::LineToElement,
 324     QPainterPath::CurveToElement,
 325     QPainterPath::CurveToDataElement,
 326     QPainterPath::CurveToDataElement,
 327     QPainterPath::LineToElement,
 328     QPainterPath::CurveToElement,
 329     QPainterPath::CurveToDataElement,
 330     QPainterPath::CurveToDataElement,
 331     QPainterPath::LineToElement,
 332     QPainterPath::CurveToElement,
 333     QPainterPath::CurveToDataElement,
 334     QPainterPath::CurveToDataElement
 335 };
 336
 337
 338
 339 static void qpaintengineex_moveTo(qreal x, qreal y, void *data) {
 340     ((StrokeHandler *) data)->pts.add(x);
 341     ((StrokeHandler *) data)->pts.add(y);
 342     ((StrokeHandler *) data)->types.add(QPainterPath::MoveToElement);
 343 }
 344
 345 static void qpaintengineex_lineTo(qreal x, qreal y, void *data) {
 346     ((StrokeHandler *) data)->pts.add(x);
 347     ((StrokeHandler *) data)->pts.add(y);
 348     ((StrokeHandler *) data)->types.add(QPainterPath::LineToElement);
 349 }
 350
 351 static void qpaintengineex_cubicTo(qreal c1x, qreal c1y, qreal c2x, qreal c2y, qreal ex, qreal ey, void *data) {
 352     ((StrokeHandler *) data)->pts.add(c1x);
 353     ((StrokeHandler *) data)->pts.add(c1y);
 354     ((StrokeHandler *) data)->types.add(QPainterPath::CurveToElement);
 355
 356     ((StrokeHandler *) data)->pts.add(c2x);
 357     ((StrokeHandler *) data)->pts.add(c2y);
 358     ((StrokeHandler *) data)->types.add(QPainterPath::CurveToDataElement);
 359
 360     ((StrokeHandler *) data)->pts.add(ex);
 361     ((StrokeHandler *) data)->pts.add(ey);
 362     ((StrokeHandler *) data)->types.add(QPainterPath::CurveToDataElement);
 363 }
 364
 365 QPaintEngineEx::QPaintEngineEx()
 366     : QPaintEngine(*new QPaintEngineExPrivate, AllFeatures)
 367 {
 368     extended = true;
 369 }
 370
 371 QPaintEngineEx::QPaintEngineEx(QPaintEngineExPrivate &data)
 372     : QPaintEngine(data, AllFeatures)
 373 {
 374     extended = true;
 375 }
 376
 377 QPainterState *QPaintEngineEx::createState(QPainterState *orig) const
 378 {
 379     if (!orig)
 380         return new QPainterState;
 381     return new QPainterState(orig);
 382 }
 383
 384 Q_GUI_EXPORT extern bool qt_scaleForTransform(const QTransform &transform, qreal *scale); // qtransform.cpp
 385
 386 void QPaintEngineEx::stroke(const QVectorPath &path, const QPen &pen)
 387 {
 388 #ifdef QT_DEBUG_DRAW
 389     qDebug() << "QPaintEngineEx::stroke()" << pen;
 390 #endif
 391
 392     Q_D(QPaintEngineEx);
 393
 394     if (path.isEmpty())
 395         return;
 396
 397     if (!d->strokeHandler) {
 398         d->strokeHandler = new StrokeHandler(path.elementCount()+4);
 399         d->stroker.setMoveToHook(qpaintengineex_moveTo);
 400         d->stroker.setLineToHook(qpaintengineex_lineTo);
 401         d->stroker.setCubicToHook(qpaintengineex_cubicTo);
 402     }
 403
 404     if (!qpen_fast_equals(pen, d->strokerPen)) {
 405         d->strokerPen = pen;
 406         d->stroker.setJoinStyle(pen.joinStyle());
 407         d->stroker.setCapStyle(pen.capStyle());
 408         d->stroker.setMiterLimit(pen.miterLimit());
 409         qreal penWidth = pen.widthF();
 410         if (penWidth == 0)
 411             d->stroker.setStrokeWidth(1);
 412         else
 413             d->stroker.setStrokeWidth(penWidth);
 414
 415         Qt::PenStyle style = pen.style();
 416         if (style == Qt::SolidLine) {
 417             d->activeStroker = &d->stroker;
 418         } else if (style == Qt::NoPen) {
 419             d->activeStroker = 0;
 420         } else {
 421             d->dasher.setDashPattern(pen.dashPattern());
 422             d->dasher.setDashOffset(pen.dashOffset());
 423             d->activeStroker = &d->dasher;
 424         }
 425     }
 426
 427     if (!d->activeStroker) {
 428         return;
 429     }
 430
 431     if (pen.style() > Qt::SolidLine) {
 432         if (pen.isCosmetic()) {
 433             d->activeStroker->setClipRect(d->exDeviceRect);
 434         } else {
 435             QRectF clipRect = state()->matrix.inverted().mapRect(QRectF(d->exDeviceRect));
 436             d->activeStroker->setClipRect(clipRect);
 437         }
 438     }
 439
 440     const QPainterPath::ElementType *types = path.elements();
 441     const qreal *points = path.points();
 442     int pointCount = path.elementCount();
 443
 444     const qreal *lastPoint = points + (pointCount<<1);
 445
 446     d->strokeHandler->types.reset();
 447     d->strokeHandler->pts.reset();
 448
 449     // Some engines might decide to optimize for the non-shape hint later on...
 450     uint flags = QVectorPath::WindingFill;
 451
 452     if (path.elementCount() > 2)
 453         flags |= QVectorPath::NonConvexShapeMask;
 454
 455     if (d->stroker.capStyle() == Qt::RoundCap || d->stroker.joinStyle() == Qt::RoundJoin)
 456         flags |= QVectorPath::CurvedShapeMask;
 457
 458     // ### Perspective Xforms are currently not supported...
 459     if (!pen.isCosmetic()) {
 460         // We include cosmetic pens in this case to avoid having to
 461         // change the current transform. Normal transformed,
 462         // non-cosmetic pens will be transformed as part of fill
 463         // later, so they are also covered here..
 464         d->activeStroker->setCurveThresholdFromTransform(state()->matrix);
 465         d->activeStroker->begin(d->strokeHandler);
 466         if (types) {
 467             while (points < lastPoint) {
 468                 switch (*types) {
 469                 case QPainterPath::MoveToElement:
 470                     d->activeStroker->moveTo(points[0], points[1]);
 471                     points += 2;
 472                     ++types;
 473                     break;
 474                 case QPainterPath::LineToElement:
 475                     d->activeStroker->lineTo(points[0], points[1]);
 476                     points += 2;
 477                     ++types;
 478                     break;
 479                 case QPainterPath::CurveToElement:
 480                     d->activeStroker->cubicTo(points[0], points[1],
 481                                               points[2], points[3],
 482                                               points[4], points[5]);
 483                     points += 6;
 484                     types += 3;
 485                     flags |= QVectorPath::CurvedShapeMask;
 486                     break;
 487                 default:
 488                     break;
 489                 }
 490             }
 491             if (path.hasImplicitClose())
 492                 d->activeStroker->lineTo(path.points()[0], path.points()[1]);
 493
 494         } else {
 495             d->activeStroker->moveTo(points[0], points[1]);
 496             points += 2;
 497             while (points < lastPoint) {
 498                 d->activeStroker->lineTo(points[0], points[1]);
 499                 points += 2;
 500             }
 501             if (path.hasImplicitClose())
 502                 d->activeStroker->lineTo(path.points()[0], path.points()[1]);
 503         }
 504         d->activeStroker->end();
 505
 506         if (!d->strokeHandler->types.size()) // an empty path...
 507             return;
 508
 509         QVectorPath strokePath(d->strokeHandler->pts.data(),
 510                                d->strokeHandler->types.size(),
 511                                d->strokeHandler->types.data(),
 512                                flags);
 513         fill(strokePath, pen.brush());
 514     } else {
 515         // For cosmetic pens we need a bit of trickery... We to process xform the input points
 516         if (state()->matrix.type() >= QTransform::TxProject) {
 517             QPainterPath painterPath = state()->matrix.map(path.convertToPainterPath());
 518             d->activeStroker->strokePath(painterPath, d->strokeHandler, QTransform());
 519         } else {
 520             d->activeStroker->setCurveThresholdFromTransform(QTransform());
 521             d->activeStroker->begin(d->strokeHandler);
 522             if (types) {
 523                 while (points < lastPoint) {
 524                     switch (*types) {
 525                     case QPainterPath::MoveToElement: {
 526                         QPointF pt = (*(QPointF *) points) * state()->matrix;
 527                         d->activeStroker->moveTo(pt.x(), pt.y());
 528                         points += 2;
 529                         ++types;
 530                         break;
 531                     }
 532                     case QPainterPath::LineToElement: {
 533                         QPointF pt = (*(QPointF *) points) * state()->matrix;
 534                         d->activeStroker->lineTo(pt.x(), pt.y());
 535                         points += 2;
 536                         ++types;
 537                         break;
 538                     }
 539                     case QPainterPath::CurveToElement: {
 540                         QPointF c1 = ((QPointF *) points)[0] * state()->matrix;
 541                         QPointF c2 = ((QPointF *) points)[1] * state()->matrix;
 542                         QPointF e =  ((QPointF *) points)[2] * state()->matrix;
 543                         d->activeStroker->cubicTo(c1.x(), c1.y(), c2.x(), c2.y(), e.x(), e.y());
 544                         points += 6;
 545                         types += 3;
 546                         flags |= QVectorPath::CurvedShapeMask;
 547                         break;
 548                     }
 549                     default:
 550                         break;
 551                     }
 552                 }
 553                 if (path.hasImplicitClose()) {
 554                     QPointF pt = * ((QPointF *) path.points()) * state()->matrix;
 555                     d->activeStroker->lineTo(pt.x(), pt.y());
 556                 }
 557
 558             } else {
 559                 QPointF p = ((QPointF *)points)[0] * state()->matrix;
 560                 d->activeStroker->moveTo(p.x(), p.y());
 561                 points += 2;
 562                 while (points < lastPoint) {
 563                     QPointF p = ((QPointF *)points)[0] * state()->matrix;
 564                     d->activeStroker->lineTo(p.x(), p.y());
 565                     points += 2;
 566                 }
 567                 if (path.hasImplicitClose())
 568                     d->activeStroker->lineTo(p.x(), p.y());
 569             }
 570             d->activeStroker->end();
 571         }
 572
 573         QVectorPath strokePath(d->strokeHandler->pts.data(),
 574                                d->strokeHandler->types.size(),
 575                                d->strokeHandler->types.data(),
 576                                flags);
 577
 578         QTransform xform = state()->matrix;
 579         state()->matrix = QTransform();
 580         transformChanged();
 581
 582         QBrush brush = pen.brush();
 583         if (qbrush_style(brush) != Qt::SolidPattern)
 584             brush.setTransform(brush.transform() * xform);
 585
 586         fill(strokePath, brush);
 587
 588         state()->matrix = xform;
 589         transformChanged();
 590     }
 591 }
 592
 593 void QPaintEngineEx::draw(const QVectorPath &path)
 594 {
 595     const QBrush &brush = state()->brush;
 596     if (qbrush_style(brush) != Qt::NoBrush)
 597         fill(path, brush);
 598
 599     const QPen &pen = state()->pen;
 600     if (qpen_style(pen) != Qt::NoPen && qbrush_style(qpen_brush(pen)) != Qt::NoBrush)
 601         stroke(path, pen);
 602 }
 603
 604
 605 void QPaintEngineEx::clip(const QRect &r, Qt::ClipOperation op)
 606 {
 607     qreal right = r.x() + r.width();
 608     qreal bottom = r.y() + r.height();
 609     qreal pts[] = { qreal(r.x()), qreal(r.y()),
 610                     right, qreal(r.y()),
 611                     right, bottom,
 612                     qreal(r.x()), bottom,
 613                     qreal(r.x()), qreal(r.y()) };
 614     QVectorPath vp(pts, 5, 0, QVectorPath::RectangleHint);
 615     clip(vp, op);
 616 }
 617
 618 void QPaintEngineEx::clip(const QRegion &region, Qt::ClipOperation op)
 619 {
 620     if (region.rectCount() == 1)
 621         clip(region.boundingRect(), op);
 622
 623     QVector<QRect> rects = region.rects();
 624     if (rects.size() <= 32) {
 625         qreal pts[2*32*4];
 626         int pos = 0;
 627         for (QVector<QRect>::const_iterator i = rects.constBegin(); i != rects.constEnd(); ++i) {
 628             qreal x1 = i->x();
 629             qreal y1 = i->y();
 630             qreal x2 = i->x() + i->width();
 631             qreal y2 = i->y() + i->height();
 632
 633             pts[pos++] = x1;
 634             pts[pos++] = y1;
 635
 636             pts[pos++] = x2;
 637             pts[pos++] = y1;
 638
 639             pts[pos++] = x2;
 640             pts[pos++] = y2;
 641
 642             pts[pos++] = x1;
 643             pts[pos++] = y2;
 644         }
 645         QVectorPath vp(pts, rects.size() * 4, qpaintengineex_rect4_types_32);
 646         clip(vp, op);
 647     } else {
 648         QVarLengthArray<qreal> pts(rects.size() * 2 * 4);
 649         QVarLengthArray<QPainterPath::ElementType> types(rects.size() * 4);
 650         int ppos = 0;
 651         int tpos = 0;
 652
 653         for (QVector<QRect>::const_iterator i = rects.constBegin(); i != rects.constEnd(); ++i) {
 654             qreal x1 = i->x();
 655             qreal y1 = i->y();
 656             qreal x2 = i->x() + i->width();
 657             qreal y2 = i->y() + i->height();
 658
 659             pts[ppos++] = x1;
 660             pts[ppos++] = y1;
 661
 662             pts[ppos++] = x2;
 663             pts[ppos++] = y1;
 664
 665             pts[ppos++] = x2;
 666             pts[ppos++] = y2;
 667
 668             pts[ppos++] = x1;
 669             pts[ppos++] = y2;
 670
 671             types[tpos++] = QPainterPath::MoveToElement;
 672             types[tpos++] = QPainterPath::LineToElement;
 673             types[tpos++] = QPainterPath::LineToElement;
 674             types[tpos++] = QPainterPath::LineToElement;
 675         }
 676
 677         QVectorPath vp(pts.data(), rects.size() * 4, types.data());
 678         clip(vp, op);
 679     }
 680
 681 }
 682
 683 void QPaintEngineEx::clip(const QPainterPath &path, Qt::ClipOperation op)
 684 {
 685     if (path.isEmpty()) {
 686         QVectorPath vp(0, 0);
 687         clip(vp, op);
 688     } else {
 689         clip(qtVectorPathForPath(path), op);
 690     }
 691 }
 692
 693 void QPaintEngineEx::fillRect(const QRectF &r, const QBrush &brush)
 694 {
 695     qreal pts[] = { r.x(), r.y(), r.x() + r.width(), r.y(),
 696                     r.x() + r.width(), r.y() + r.height(), r.x(), r.y() + r.height() };
 697     QVectorPath vp(pts, 4, 0, QVectorPath::RectangleHint);
 698     fill(vp, brush);
 699 }
 700
 701 void QPaintEngineEx::fillRect(const QRectF &r, const QColor &color)
 702 {
 703     fillRect(r, QBrush(color));
 704 }
 705
 706 void QPaintEngineEx::drawRects(const QRect *rects, int rectCount)
 707 {
 708     for (int i=0; i<rectCount; ++i) {
 709         const QRect &r = rects[i];
 710         // ### Is there a one off here?
 711         qreal right = r.x() + r.width();
 712         qreal bottom = r.y() + r.height();
 713         qreal pts[] = { qreal(r.x()), qreal(r.y()),
 714                         right, qreal(r.y()),
 715                         right, bottom,
 716                         qreal(r.x()), bottom,
 717                         qreal(r.x()), qreal(r.y()) };
 718         QVectorPath vp(pts, 5, 0, QVectorPath::RectangleHint);
 719         draw(vp);
 720     }
 721 }
 722
 723 void QPaintEngineEx::drawRects(const QRectF *rects, int rectCount)
 724 {
 725     for (int i=0; i<rectCount; ++i) {
 726         const QRectF &r = rects[i];
 727         qreal right = r.x() + r.width();
 728         qreal bottom = r.y() + r.height();
 729         qreal pts[] = { r.x(), r.y(),
 730                         right, r.y(),
 731                         right, bottom,
 732                         r.x(), bottom,
 733                         r.x(), r.y() };
 734         QVectorPath vp(pts, 5, 0, QVectorPath::RectangleHint);
 735         draw(vp);
 736     }
 737 }
 738
 739
 740 void QPaintEngineEx::drawRoundedRect(const QRectF &rect, qreal xRadius, qreal yRadius,
 741                                      Qt::SizeMode mode)
 742 {
 743     qreal x1 = rect.left();
 744     qreal x2 = rect.right();
 745     qreal y1 = rect.top();
 746     qreal y2 = rect.bottom();
 747
 748     if (mode == Qt::RelativeSize) {
 749         xRadius = xRadius * rect.width() / 200.;
 750         yRadius = yRadius * rect.height() / 200.;
 751     }
 752
 753     xRadius = qMin(xRadius, rect.width() / 2);
 754     yRadius = qMin(yRadius, rect.height() / 2);
 755
 756     qreal pts[] = {
 757         x1 + xRadius, y1,                   // MoveTo
 758         x2 - xRadius, y1,                   // LineTo
 759         x2 - (1 - KAPPA) * xRadius, y1,     // CurveTo
 760         x2, y1 + (1 - KAPPA) * yRadius,
 761         x2, y1 + yRadius,
 762         x2, y2 - yRadius,                   // LineTo
 763         x2, y2 - (1 - KAPPA) * yRadius,     // CurveTo
 764         x2 - (1 - KAPPA) * xRadius, y2,
 765         x2 - xRadius, y2,
 766         x1 + xRadius, y2,                   // LineTo
 767         x1 + (1 - KAPPA) * xRadius, y2,           // CurveTo
 768         x1, y2 - (1 - KAPPA) * yRadius,
 769         x1, y2 - yRadius,
 770         x1, y1 + yRadius,                   // LineTo
 771         x1, y1 + (1 - KAPPA) * yRadius,           // CurveTo
 772         x1 + (1 - KAPPA) * xRadius, y1,
 773         x1 + xRadius, y1
 774     };
 775
 776     QVectorPath path(pts, 17, qpaintengineex_roundedrect_types, QVectorPath::RoundedRectHint);
 777     draw(path);
 778 }
 779
 780
 781
 782 void QPaintEngineEx::drawLines(const QLine *lines, int lineCount)
 783 {
 784     int elementCount = lineCount << 1;
 785     while (elementCount > 0) {
 786         int count = qMin(elementCount, 32);
 787
 788         qreal pts[64];
 789         int count2 = count<<1;
 790 #ifdef Q_WS_MAC
 791         for (int i=0; i<count2; i+=2) {
 792             pts[i] = ((int *) lines)[i+1];
 793             pts[i+1] = ((int *) lines)[i];
 794         }
 795 #else
 796         for (int i=0; i<count2; ++i)
 797             pts[i] = ((int *) lines)[i];
 798 #endif
 799
 800         QVectorPath path(pts, count, qpaintengineex_line_types_16, QVectorPath::LinesHint);
 801         stroke(path, state()->pen);
 802
 803         elementCount -= 32;
 804         lines += 16;
 805     }
 806 }
 807
 808 void QPaintEngineEx::drawLines(const QLineF *lines, int lineCount)
 809 {
 810     int elementCount = lineCount << 1;
 811     while (elementCount > 0) {
 812         int count = qMin(elementCount, 32);
 813
 814         QVectorPath path((qreal *) lines, count, qpaintengineex_line_types_16,
 815                          QVectorPath::LinesHint);
 816         stroke(path, state()->pen);
 817
 818         elementCount -= 32;
 819         lines += 16;
 820     }
 821 }
 822
 823 void QPaintEngineEx::drawEllipse(const QRectF &r)
 824 {
 825     qreal pts[26]; // QPointF[13] without constructors...
 826     union {
 827         qreal *ptr;
 828         QPointF *points;
 829     } x;
 830     x.ptr = pts;
 831
 832     int point_count = 0;
 833     x.points[0] = qt_curves_for_arc(r, 0, -360, x.points + 1, &point_count);
 834     QVectorPath vp((qreal *) pts, point_count, qpaintengineex_ellipse_types, QVectorPath::EllipseHint);
 835     draw(vp);
 836 }
 837
 838 void QPaintEngineEx::drawEllipse(const QRect &r)
 839 {
 840     drawEllipse(QRectF(r));
 841 }
 842
 843 void QPaintEngineEx::drawPath(const QPainterPath &path)
 844 {
 845     if (!path.isEmpty())
 846         draw(qtVectorPathForPath(path));
 847 }
 848
 849
 850 void QPaintEngineEx::drawPoints(const QPointF *points, int pointCount)
 851 {
 852     QPen pen = state()->pen;
 853     if (pen.capStyle() == Qt::FlatCap)
 854         pen.setCapStyle(Qt::SquareCap);
 855
 856     if (pen.brush().isOpaque()) {
 857         while (pointCount > 0) {
 858             int count = qMin(pointCount, 16);
 859             qreal pts[64];
 860             int oset = -1;
 861             for (int i=0; i<count; ++i) {
 862                 pts[++oset] = points[i].x();
 863                 pts[++oset] = points[i].y();
 864                 pts[++oset] = points[i].x() + 1/63.;
 865                 pts[++oset] = points[i].y();
 866             }
 867             QVectorPath path(pts, count * 2, qpaintengineex_line_types_16, QVectorPath::LinesHint);
 868             stroke(path, pen);
 869             pointCount -= 16;
 870             points += 16;
 871         }
 872     } else {
 873         for (int i=0; i<pointCount; ++i) {
 874             qreal pts[] = { points[i].x(), points[i].y(), points[i].x() + 1/63., points[i].y() };
 875             QVectorPath path(pts, 2, 0);
 876             stroke(path, pen);
 877         }
 878     }
 879 }
 880
 881 void QPaintEngineEx::drawPoints(const QPoint *points, int pointCount)
 882 {
 883     QPen pen = state()->pen;
 884     if (pen.capStyle() == Qt::FlatCap)
 885         pen.setCapStyle(Qt::SquareCap);
 886
 887     if (pen.brush().isOpaque()) {
 888         while (pointCount > 0) {
 889             int count = qMin(pointCount, 16);
 890             qreal pts[64];
 891             int oset = -1;
 892             for (int i=0; i<count; ++i) {
 893                 pts[++oset] = points[i].x();
 894                 pts[++oset] = points[i].y();
 895                 pts[++oset] = points[i].x() + 1/63.;
 896                 pts[++oset] = points[i].y();
 897             }
 898             QVectorPath path(pts, count * 2, qpaintengineex_line_types_16, QVectorPath::LinesHint);
 899             stroke(path, pen);
 900             pointCount -= 16;
 901             points += 16;
 902         }
 903     } else {
 904         for (int i=0; i<pointCount; ++i) {
 905             qreal pts[] = { qreal(points[i].x()), qreal(points[i].y()),
 906                             qreal(points[i].x() +1/63.), qreal(points[i].y()) };
 907             QVectorPath path(pts, 2, 0);
 908             stroke(path, pen);
 909         }
 910     }
 911 }
 912
 913
 914 void QPaintEngineEx::drawPolygon(const QPointF *points, int pointCount, PolygonDrawMode mode)
 915 {
 916     QVectorPath path((qreal *) points, pointCount, 0, QVectorPath::polygonFlags(mode));
 917
 918     if (mode == PolylineMode)
 919         stroke(path, state()->pen);
 920     else
 921         draw(path);
 922 }
 923
 924 void QPaintEngineEx::drawPolygon(const QPoint *points, int pointCount, PolygonDrawMode mode)
 925 {
 926     int count = pointCount<<1;
 927     QVarLengthArray<qreal> pts(count);
 928
 929 #ifdef Q_WS_MAC
 930     for (int i=0; i<count; i+=2) {
 931         pts[i] = ((int *) points)[i+1];
 932         pts[i+1] = ((int *) points)[i];
 933     }
 934 #else
 935     for (int i=0; i<count; ++i)
 936         pts[i] = ((int *) points)[i];
 937 #endif
 938
 939     QVectorPath path(pts.data(), pointCount, 0, QVectorPath::polygonFlags(mode));
 940
 941     if (mode == PolylineMode)
 942         stroke(path, state()->pen);
 943     else
 944         draw(path);
 945
 946 }
 947
 948 void QPaintEngineEx::drawPixmap(const QPointF &pos, const QPixmap &pm)
 949 {
 950     drawPixmap(QRectF(pos, pm.size()), pm, pm.rect());
 951 }
 952
 953 void QPaintEngineEx::drawImage(const QPointF &pos, const QImage &image)
 954 {
 955     drawImage(QRectF(pos, image.size()), image, image.rect());
 956 }
 957
 958 void QPaintEngineEx::drawTiledPixmap(const QRectF &r, const QPixmap &pixmap, const QPointF &s)
 959 {
 960     QBrush brush(state()->pen.color(), pixmap);
 961     QTransform xform = QTransform::fromTranslate(r.x() - s.x(), r.y() - s.y());
 962     brush.setTransform(xform);
 963
 964     qreal pts[] = { r.x(), r.y(),
 965                     r.x() + r.width(), r.y(),
 966                     r.x() + r.width(), r.y() + r.height(),
 967                     r.x(), r.y() + r.height() };
 968
 969     QVectorPath path(pts, 4, 0, QVectorPath::RectangleHint);
 970     fill(path, brush);
 971 }
 972
 973 void QPaintEngineEx::drawPixmapFragments(const QPainter::PixmapFragment *fragments, int fragmentCount,
 974                                          const QPixmap &pixmap, QPainter::PixmapFragmentHints /*hints*/)
 975 {
 976     if (pixmap.isNull())
 977         return;
 978
 979     qreal oldOpacity = state()->opacity;
 980     QTransform oldTransform = state()->matrix;
 981
 982     for (int i = 0; i < fragmentCount; ++i) {
 983         QTransform transform = oldTransform;
 984         transform.translate(fragments[i].x, fragments[i].y);
 985         transform.rotate(fragments[i].rotation);
 986         state()->opacity = oldOpacity * fragments[i].opacity;
 987         state()->matrix = transform;
 988         opacityChanged();
 989         transformChanged();
 990
 991         qreal w = fragments[i].scaleX * fragments[i].width;
 992         qreal h = fragments[i].scaleY * fragments[i].height;
 993         QRectF sourceRect(fragments[i].sourceLeft, fragments[i].sourceTop,
 994                           fragments[i].width, fragments[i].height);
 995         drawPixmap(QRectF(-0.5 * w, -0.5 * h, w, h), pixmap, sourceRect);
 996     }
 997
 998     state()->opacity = oldOpacity;
 999     state()->matrix = oldTransform;
1000     opacityChanged();
1001     transformChanged();
1002 }
1003
1004 void QPaintEngineEx::setState(QPainterState *s)
1005 {
1006     QPaintEngine::state = s;
1007 }
1008
1009
1010 void QPaintEngineEx::updateState(const QPaintEngineState &)
1011 {
1012     // do nothing...
1013 }
1014
1015 Q_GUI_EXPORT QPainterPath qt_painterPathFromVectorPath(const QVectorPath &path)
1016 {
1017     const qreal *points = path.points();
1018     const QPainterPath::ElementType *types = path.elements();
1019
1020     QPainterPath p;
1021     if (types) {
1022         int id = 0;
1023         for (int i=0; i<path.elementCount(); ++i) {
1024             switch(types[i]) {
1025             case QPainterPath::MoveToElement:
1026                 p.moveTo(QPointF(points[id], points[id+1]));
1027                 id+=2;
1028                 break;
1029             case QPainterPath::LineToElement:
1030                 p.lineTo(QPointF(points[id], points[id+1]));
1031                 id+=2;
1032                 break;
1033             case QPainterPath::CurveToElement: {
1034                 QPointF p1(points[id], points[id+1]);
1035                 QPointF p2(points[id+2], points[id+3]);
1036                 QPointF p3(points[id+4], points[id+5]);
1037                 p.cubicTo(p1, p2, p3);
1038                 id+=6;
1039                 break;
1040             }
1041             case QPainterPath::CurveToDataElement:
1042                 ;
1043                 break;
1044             }
1045         }
1046     } else {
1047         p.moveTo(QPointF(points[0], points[1]));
1048         int id = 2;
1049         for (int i=1; i<path.elementCount(); ++i) {
1050             p.lineTo(QPointF(points[id], points[id+1]));
1051             id+=2;
1052         }
1053     }
1054     if (path.hints() & QVectorPath::WindingFill)
1055         p.setFillRule(Qt::WindingFill);
1056
1057     return p;
1058 }
1059
1060
1061 QT_END_NAMESPACE