diff options
Diffstat (limited to 'src/gui/painting/qregion.cpp')
-rw-r--r-- | src/gui/painting/qregion.cpp | 204 |
1 files changed, 108 insertions, 96 deletions
diff --git a/src/gui/painting/qregion.cpp b/src/gui/painting/qregion.cpp index badc14a..d138663 100644 --- a/src/gui/painting/qregion.cpp +++ b/src/gui/painting/qregion.cpp @@ -49,7 +49,7 @@ #include <qdebug.h> -#if defined(Q_OS_UNIX) || defined(Q_OS_WINCE) +#if defined(Q_OS_UNIX) || defined(Q_WS_WIN) #include "qimage.h" #include "qbitmap.h" #include <stdlib.h> @@ -61,7 +61,7 @@ QT_BEGIN_NAMESPACE \class QRegion \brief The QRegion class specifies a clip region for a painter. - \ingroup multimedia + \ingroup painting \ingroup shared QRegion is used with QPainter::setClipRegion() to limit the paint @@ -92,10 +92,6 @@ QT_BEGIN_NAMESPACE Example of using complex regions: \snippet doc/src/snippets/code/src_gui_painting_qregion.cpp 0 - \warning Due to window system limitations, the whole coordinate space for a - region is limited to the points between -32767 and 32767 on Windows - 95/98/ME. You can circumvent this limitation by using a QPainterPath. - \section1 Additional License Information On Embedded Linux, Windows CE and X11 platforms, parts of this class rely on @@ -450,9 +446,9 @@ QDebug operator<<(QDebug s, const QRegion &r) { QVector<QRect> rects = r.rects(); s.nospace() << "QRegion(size=" << rects.size() << "), " - << "bounds = " << r.boundingRect() << "\n"; + << "bounds = " << r.boundingRect() << '\n'; for (int i=0; i<rects.size(); ++i) - s << "- " << i << rects.at(i) << "\n"; + s << "- " << i << rects.at(i) << '\n'; return s; } #endif @@ -549,7 +545,7 @@ QRegion& QRegion::operator|=(const QRegion &r) \sa intersected() */ -#if !defined (Q_OS_UNIX) && !defined (Q_OS_WINCE) +#if !defined (Q_OS_UNIX) && !defined (Q_WS_WIN) QRegion& QRegion::operator+=(const QRect &r) { return operator+=(QRegion(r)); @@ -565,16 +561,14 @@ QRegion& QRegion::operator+=(const QRect &r) \sa intersected() */ -#if !defined(Q_WS_WIN) || defined(Q_OS_WINCE) QRegion& QRegion::operator&=(const QRegion &r) { return *this = *this & r; } -#endif /*! \overload \since 4.4 */ -#if defined (Q_OS_UNIX) || defined (Q_OS_WINCE) +#if defined (Q_OS_UNIX) || defined (Q_WS_WIN) QRegion& QRegion::operator&=(const QRect &r) { return *this = *this & r; @@ -595,10 +589,8 @@ QRegion& QRegion::operator&=(const QRect &r) \sa subtracted() */ -#if !defined(Q_WS_WIN) || defined(Q_OS_WINCE) QRegion& QRegion::operator-=(const QRegion &r) { return *this = *this - r; } -#endif /*! Applies the xored() function to this region and \a r and @@ -698,6 +690,8 @@ bool QRegion::intersects(const QRegion ®ion) const if (!rect_intersects(boundingRect(), region.boundingRect())) return false; + if (numRects() == 1 && region.numRects() == 1) + return true; const QVector<QRect> myRects = rects(); const QVector<QRect> otherRects = region.rects(); @@ -723,6 +717,8 @@ bool QRegion::intersects(const QRect &rect) const const QRect r = rect.normalized(); if (!rect_intersects(boundingRect(), r)) return false; + if (numRects() == 1) + return true; const QVector<QRect> myRects = rects(); for (QVector<QRect>::const_iterator it = myRects.constBegin(); it < myRects.constEnd(); ++it) @@ -731,7 +727,7 @@ bool QRegion::intersects(const QRect &rect) const return false; } -#if !defined (Q_OS_UNIX) && !defined (Q_OS_WINCE) +#if !defined (Q_OS_UNIX) && !defined (Q_WS_WIN) /*! \overload \since 4.4 @@ -1086,7 +1082,7 @@ Q_AUTOTEST_EXPORT QPainterPath qt_regionToPath(const QRegion ®ion) return result; } -#if defined(Q_OS_UNIX) || defined(Q_OS_WINCE) +#if defined(Q_OS_UNIX) || defined(Q_WS_WIN) //#define QT_REGION_DEBUG /* @@ -1601,7 +1597,7 @@ void QRegionPrivate::selfTest() const for (int i = 0; i < numRects; ++i) { const QRect r = rects.at(i); if ((r.width() * r.height()) > innerArea) - qDebug() << "selfTest(): innerRect" << innerRect << "<" << r; + qDebug() << "selfTest(): innerRect" << innerRect << '<' << r; } QRect r = rects.first(); @@ -1627,9 +1623,9 @@ QT_END_INCLUDE_NAMESPACE QT_BEGIN_INCLUDE_NAMESPACE # include "qregion_mac.cpp" QT_END_INCLUDE_NAMESPACE -#elif defined(Q_OS_WINCE) +#elif defined(Q_WS_WIN) QT_BEGIN_INCLUDE_NAMESPACE -# include "qregion_wince.cpp" +# include "qregion_win.cpp" QT_END_INCLUDE_NAMESPACE #elif defined(Q_WS_QWS) static QRegionPrivate qrp; @@ -3167,6 +3163,7 @@ static void InsertEdgeInET(EdgeTable *ET, EdgeTableEntry *ETE, int scanline, { tmpSLLBlock = (ScanLineListBlock *)malloc(sizeof(ScanLineListBlock)); + Q_CHECK_PTR(tmpSLLBlock); (*SLLBlock)->next = tmpSLLBlock; tmpSLLBlock->next = (ScanLineListBlock *)NULL; *SLLBlock = tmpSLLBlock; @@ -3553,6 +3550,8 @@ static void PtsToRegion(register int numFullPtBlocks, register int iCurPtBlock, * Scan converts a polygon by returning a run-length * encoding of the resultant bitmap -- the run-length * encoding is in the form of an array of rectangles. + * + * Can return 0 in case of errors. */ static QRegionPrivate *PolygonRegion(const QPoint *Pts, int Count, int rule) //Point *Pts; /* the pts */ @@ -3624,75 +3623,28 @@ static QRegionPrivate *PolygonRegion(const QPoint *Pts, int Count, int rule) } - if (rule == EvenOddRule) { - /* - * for each scanline - */ - for (y = ET.ymin; y < ET.ymax; ++y) { - - /* - * Add a new edge to the active edge table when we - * get to the next edge. - */ - if (pSLL && y == pSLL->scanline) { - loadAET(&AET, pSLL->edgelist); - pSLL = pSLL->next; - } - pPrevAET = &AET; - pAET = AET.next; - + QT_TRY { + if (rule == EvenOddRule) { /* - * for each active edge + * for each scanline */ - while (pAET) { - pts->setX(pAET->bres.minor_axis); - pts->setY(y); - ++pts; - ++iPts; + for (y = ET.ymin; y < ET.ymax; ++y) { /* - * send out the buffer + * Add a new edge to the active edge table when we + * get to the next edge. */ - if (iPts == NUMPTSTOBUFFER) { - tmpPtBlock = (POINTBLOCK *)malloc(sizeof(POINTBLOCK)); - tmpPtBlock->pts = reinterpret_cast<QPoint *>(tmpPtBlock->data); - curPtBlock->next = tmpPtBlock; - curPtBlock = tmpPtBlock; - pts = curPtBlock->pts; - ++numFullPtBlocks; - iPts = 0; + if (pSLL && y == pSLL->scanline) { + loadAET(&AET, pSLL->edgelist); + pSLL = pSLL->next; } - EVALUATEEDGEEVENODD(pAET, pPrevAET, y) - } - InsertionSort(&AET); - } - } else { - /* - * for each scanline - */ - for (y = ET.ymin; y < ET.ymax; ++y) { - /* - * Add a new edge to the active edge table when we - * get to the next edge. - */ - if (pSLL && y == pSLL->scanline) { - loadAET(&AET, pSLL->edgelist); - computeWAET(&AET); - pSLL = pSLL->next; - } - pPrevAET = &AET; - pAET = AET.next; - pWETE = pAET; + pPrevAET = &AET; + pAET = AET.next; - /* - * for each active edge - */ - while (pAET) { /* - * add to the buffer only those edges that - * are in the Winding active edge table. + * for each active edge */ - if (pWETE == pAET) { + while (pAET) { pts->setX(pAET->bres.minor_axis); pts->setY(y); ++pts; @@ -3702,7 +3654,8 @@ static QRegionPrivate *PolygonRegion(const QPoint *Pts, int Count, int rule) * send out the buffer */ if (iPts == NUMPTSTOBUFFER) { - tmpPtBlock = static_cast<POINTBLOCK *>(malloc(sizeof(POINTBLOCK))); + tmpPtBlock = (POINTBLOCK *)malloc(sizeof(POINTBLOCK)); + Q_CHECK_PTR(tmpPtBlock); tmpPtBlock->pts = reinterpret_cast<QPoint *>(tmpPtBlock->data); curPtBlock->next = tmpPtBlock; curPtBlock = tmpPtBlock; @@ -3710,21 +3663,81 @@ static QRegionPrivate *PolygonRegion(const QPoint *Pts, int Count, int rule) ++numFullPtBlocks; iPts = 0; } - pWETE = pWETE->nextWETE; + EVALUATEEDGEEVENODD(pAET, pPrevAET, y) } - EVALUATEEDGEWINDING(pAET, pPrevAET, y, fixWAET) + InsertionSort(&AET); } - + } else { /* - * recompute the winding active edge table if - * we just resorted or have exited an edge. + * for each scanline */ - if (InsertionSort(&AET) || fixWAET) { - computeWAET(&AET); - fixWAET = false; + for (y = ET.ymin; y < ET.ymax; ++y) { + /* + * Add a new edge to the active edge table when we + * get to the next edge. + */ + if (pSLL && y == pSLL->scanline) { + loadAET(&AET, pSLL->edgelist); + computeWAET(&AET); + pSLL = pSLL->next; + } + pPrevAET = &AET; + pAET = AET.next; + pWETE = pAET; + + /* + * for each active edge + */ + while (pAET) { + /* + * add to the buffer only those edges that + * are in the Winding active edge table. + */ + if (pWETE == pAET) { + pts->setX(pAET->bres.minor_axis); + pts->setY(y); + ++pts; + ++iPts; + + /* + * send out the buffer + */ + if (iPts == NUMPTSTOBUFFER) { + tmpPtBlock = static_cast<POINTBLOCK *>(malloc(sizeof(POINTBLOCK))); + tmpPtBlock->pts = reinterpret_cast<QPoint *>(tmpPtBlock->data); + curPtBlock->next = tmpPtBlock; + curPtBlock = tmpPtBlock; + pts = curPtBlock->pts; + ++numFullPtBlocks; + iPts = 0; + } + pWETE = pWETE->nextWETE; + } + EVALUATEEDGEWINDING(pAET, pPrevAET, y, fixWAET) + } + + /* + * recompute the winding active edge table if + * we just resorted or have exited an edge. + */ + if (InsertionSort(&AET) || fixWAET) { + computeWAET(&AET); + fixWAET = false; + } } } + } QT_CATCH(...) { + FreeStorage(SLLBlock.next); + PtsToRegion(numFullPtBlocks, iPts, &FirstPtBlock, region); + for (curPtBlock = FirstPtBlock.next; --numFullPtBlocks >= 0;) { + tmpPtBlock = curPtBlock->next; + free(curPtBlock); + curPtBlock = tmpPtBlock; + } + free(pETEs); + return 0; // this function returns 0 in case of an error } + FreeStorage(SLLBlock.next); PtsToRegion(numFullPtBlocks, iPts, &FirstPtBlock, region); for (curPtBlock = FirstPtBlock.next; --numFullPtBlocks >= 0;) { @@ -3829,7 +3842,7 @@ QRegion::QRegion(const QRect &r, RegionType t) #if defined(Q_WS_X11) d->rgn = 0; d->xrectangles = 0; -#elif defined(Q_OS_WINCE) +#elif defined(Q_WS_WIN) d->rgn = 0; #endif if (t == Rectangle) { @@ -3851,7 +3864,7 @@ QRegion::QRegion(const QPolygon &a, Qt::FillRule fillRule) #if defined(Q_WS_X11) d->rgn = 0; d->xrectangles = 0; -#elif defined(Q_OS_WINCE) +#elif defined(Q_WS_WIN) d->rgn = 0; #endif d->qt_rgn = PolygonRegion(a.constData(), a.size(), @@ -3881,7 +3894,7 @@ QRegion::QRegion(const QBitmap &bm) #if defined(Q_WS_X11) d->rgn = 0; d->xrectangles = 0; -#elif defined(Q_OS_WINCE) +#elif defined(Q_WS_WIN) d->rgn = 0; #endif d->qt_rgn = qt_bitmapToRegion(bm); @@ -3896,7 +3909,7 @@ void QRegion::cleanUp(QRegion::QRegionData *x) XDestroyRegion(x->rgn); if (x->xrectangles) free(x->xrectangles); -#elif defined(Q_OS_WINCE) +#elif defined(Q_WS_WIN) if (x->rgn) qt_win_dispose_rgn(x->rgn); #endif @@ -3923,16 +3936,15 @@ QRegion &QRegion::operator=(const QRegion &r) /*! \internal */ - QRegion QRegion::copy() const { QRegion r; - QRegionData *x = new QRegionData; + QScopedPointer<QRegionData> x(new QRegionData); x->ref = 1; #if defined(Q_WS_X11) x->rgn = 0; x->xrectangles = 0; -#elif defined(Q_OS_WINCE) +#elif defined(Q_WS_WIN) x->rgn = 0; #endif if (d->qt_rgn) @@ -3941,7 +3953,7 @@ QRegion QRegion::copy() const x->qt_rgn = new QRegionPrivate; if (!r.d->ref.deref()) cleanUp(r.d); - r.d = x; + r.d = x.take(); return r; } |