C++ QSizeF类代码示例

QTransform scaleToPercent(const QSizeF &size)
{
    const qreal w = qMax(static_cast<qreal>(1e-5), size.width());
    const qreal h = qMax(static_cast<qreal>(1e-5), size.height());
    return QTransform().scale(100/w, 100/h);
}

void RectangleShape::updatePath(const QSizeF &size)
{
    qreal rx = 0;
    qreal ry = 0;
    if (m_cornerRadiusX > 0 && m_cornerRadiusY > 0) {
        rx = size.width() / 200.0 * m_cornerRadiusX;
        ry = size.height() / 200.0 * m_cornerRadiusY;
    }

    qreal x2 = size.width() - rx;
    qreal y2 = size.height() - ry;

    QPointF curvePoints[12];

    int requiredCurvePointCount = 4;
    if (rx && m_cornerRadiusX < 100)
        requiredCurvePointCount += 2;
    if (ry && m_cornerRadiusY < 100)
        requiredCurvePointCount += 2;

    createPoints(requiredCurvePointCount);

    KoSubpath &points = *m_subpaths[0];

    int cp = 0;

    // first path starts and closes path
    points[cp]->setProperty(KoPathPoint::StartSubpath);
    points[cp]->setProperty(KoPathPoint::CloseSubpath);
    points[cp]->setPoint(QPointF(rx, 0));
    points[cp]->removeControlPoint1();
    points[cp]->removeControlPoint2();

    if (m_cornerRadiusX < 100 || m_cornerRadiusY == 0) {
        // end point of the top edge
        points[++cp]->setPoint(QPointF(x2, 0));
        points[cp]->removeControlPoint1();
        points[cp]->removeControlPoint2();
    }

    if (rx) {
        // the top right radius
        arcToCurve(rx, ry, 90, -90, points[cp]->point(), curvePoints);
        points[cp]->setControlPoint2(curvePoints[0]);
        points[++cp]->setControlPoint1(curvePoints[1]);
        points[cp]->setPoint(curvePoints[2]);
        points[cp]->removeControlPoint2();
    }

    if (m_cornerRadiusY < 100 || m_cornerRadiusX == 0) {
        // the right edge
        points[++cp]->setPoint(QPointF(size.width(), y2));
        points[cp]->removeControlPoint1();
        points[cp]->removeControlPoint2();
    }

    if (rx) {
        // the bottom right radius
        arcToCurve(rx, ry, 0, -90, points[cp]->point(), curvePoints);
        points[cp]->setControlPoint2(curvePoints[0]);
        points[++cp]->setControlPoint1(curvePoints[1]);
        points[cp]->setPoint(curvePoints[2]);
        points[cp]->removeControlPoint2();
    }

    if (m_cornerRadiusX < 100 || m_cornerRadiusY == 0) {
        // the bottom edge
        points[++cp]->setPoint(QPointF(rx, size.height()));
        points[cp]->removeControlPoint1();
        points[cp]->removeControlPoint2();
    }

    if (rx) {
        // the bottom left radius
        arcToCurve(rx, ry, 270, -90, points[cp]->point(), curvePoints);
        points[cp]->setControlPoint2(curvePoints[0]);
        points[++cp]->setControlPoint1(curvePoints[1]);
        points[cp]->setPoint(curvePoints[2]);
        points[cp]->removeControlPoint2();
    }

    if ((m_cornerRadiusY < 100 || m_cornerRadiusX == 0) && ry) {
        // the right edge
        points[++cp]->setPoint(QPointF(0, ry));
        points[cp]->removeControlPoint1();
        points[cp]->removeControlPoint2();
    }

    if (rx) {
        // the top left radius
        arcToCurve(rx, ry, 180, -90, points[cp]->point(), curvePoints);
        points[cp]->setControlPoint2(curvePoints[0]);
        points[0]->setControlPoint1(curvePoints[1]);
        points[0]->setPoint(curvePoints[2]);
    }

    // unset all stop/close path properties
    for (int i = 1; i < cp; ++i) {
        points[i]->unsetProperty(KoPathPoint::StopSubpath);
        points[i]->unsetProperty(KoPathPoint::CloseSubpath);
//.........这里部分代码省略.........

void QgsComposerMultiFrame::recalculateFrameSizes()
{
  if ( mFrameItems.size() < 1 )
  {
    return;
  }

  QSizeF size = totalSize();
  double totalHeight = size.height();

  if ( totalHeight < 1 )
  {
    return;
  }

  double currentY = 0;
  double currentHeight = 0;
  QgsComposerFrame* currentItem = 0;

  for ( int i = 0; i < mFrameItems.size(); ++i )
  {
    if ( currentY >= totalHeight )
    {
      if ( mResizeMode == ExtendToNextPage ) //remove unneeded frames in extent mode
      {
        for ( int j = mFrameItems.size(); j > i; --j )
        {
          removeFrame( j - 1 );
        }
      }
      return;
    }

    currentItem = mFrameItems.value( i );
    currentHeight = currentItem->rect().height();
    currentItem->setContentSection( QRectF( 0, currentY, currentItem->rect().width(), currentHeight ) );
    currentItem->update();
    currentY += currentHeight;
  }

  //at end of frames but there is  still content left. Add other pages if ResizeMode ==
  if ( mResizeMode == ExtendToNextPage )
  {
    while ( currentY < totalHeight )
    {
      //find out on which page the lower left point of the last frame is
      int page = currentItem->transform().dy() / ( mComposition->paperHeight() + mComposition->spaceBetweenPages() );

      //add new pages if necessary
      if ( mComposition->numPages() < ( page + 2 ) )
      {
        mComposition->setNumPages( page + 2 );
      }

      //copy last frame
      QgsComposerFrame* newFrame = new QgsComposerFrame( mComposition, this, currentItem->transform().dx(), currentItem->transform().dy() + mComposition->paperHeight() + mComposition->spaceBetweenPages(),
          currentItem->rect().width(), currentItem->rect().height() );
      newFrame->setContentSection( QRectF( 0, currentY, newFrame->rect().width(), newFrame->rect().height() ) );
      currentY += newFrame->rect().height();
      currentItem = newFrame;
      addFrame( newFrame, false );
    }
  }
}

// Apply a simple variant type to a DOM property
static bool applySimpleProperty(const QVariant &v, bool translateString, DomProperty *dom_prop)
{
    switch (v.type()) {
    case QVariant::String: {
        DomString *str = new DomString();
        str->setText(v.toString());
        if (!translateString)
            str->setAttributeNotr(QStringLiteral("true"));
        dom_prop->setElementString(str);
    }
        return true;

    case QVariant::ByteArray:
        dom_prop->setElementCstring(QString::fromUtf8(v.toByteArray()));
        return true;

    case QVariant::Int:
        dom_prop->setElementNumber(v.toInt());
        return true;

    case QVariant::UInt:
        dom_prop->setElementUInt(v.toUInt());
        return true;

    case QVariant::LongLong:
        dom_prop->setElementLongLong(v.toLongLong());
        return true;

    case QVariant::ULongLong:
        dom_prop->setElementULongLong(v.toULongLong());
        return true;

    case QVariant::Double:
        dom_prop->setElementDouble(v.toDouble());
        return true;

    case QVariant::Bool:
        dom_prop->setElementBool(v.toBool() ? QFormBuilderStrings::instance().trueValue : QFormBuilderStrings::instance().falseValue);
        return true;

    case QVariant::Char: {
        DomChar *ch = new DomChar();
        const QChar character = v.toChar();
        ch->setElementUnicode(character.unicode());
        dom_prop->setElementChar(ch);
    }
        return true;

    case QVariant::Point: {
        DomPoint *pt = new DomPoint();
        const QPoint point = v.toPoint();
        pt->setElementX(point.x());
        pt->setElementY(point.y());
        dom_prop->setElementPoint(pt);
    }
        return true;

    case QVariant::PointF: {
        DomPointF *ptf = new DomPointF();
        const QPointF pointf = v.toPointF();
        ptf->setElementX(pointf.x());
        ptf->setElementY(pointf.y());
        dom_prop->setElementPointF(ptf);
    }
        return true;

    case QVariant::Color: {
        DomColor *clr = new DomColor();
        const QColor color = qvariant_cast<QColor>(v);
        clr->setElementRed(color.red());
        clr->setElementGreen(color.green());
        clr->setElementBlue(color.blue());
        const int alphaChannel = color.alpha();
        if (alphaChannel != 255)
            clr->setAttributeAlpha(alphaChannel);
        dom_prop->setElementColor(clr);
    }
        return true;

    case QVariant::Size: {
        DomSize *sz = new DomSize();
        const QSize size = v.toSize();
        sz->setElementWidth(size.width());
        sz->setElementHeight(size.height());
        dom_prop->setElementSize(sz);
    }
        return true;

    case QVariant::SizeF: {
        DomSizeF *szf = new DomSizeF();
        const QSizeF sizef = v.toSizeF();
        szf->setElementWidth(sizef.width());
        szf->setElementHeight(sizef.height());
        dom_prop->setElementSizeF(szf);
    }
        return true;

    case QVariant::Rect: {
        DomRect *rc = new DomRect();
//.........这里部分代码省略.........

QImage *ConvertThread::loadSvgImage(const QString &imagePath)
{
    QSvgRenderer renderer;
    if (shared.svgModifiersEnabled) {
        SvgModifier modifier(pd.imagePath);
        // modify SVG file
        if (!shared.svgRemoveTextString.isNull())
            modifier.removeText(shared.svgRemoveTextString);
        if (shared.svgRemoveEmptyGroup)
            modifier.removeEmptyGroups();
        // save SVG file
        if (shared.svgSave) {
            QString svgTargetFileName =
                    targetFilePath.left(targetFilePath.lastIndexOf('.')+1) + "svg";
            QFile file(svgTargetFileName);
            // ask overwrite
            if (file.exists()) {
                shared.mutex.lock();
                emit question(svgTargetFileName, Overwrite);
                shared.mutex.unlock();
            }
            if (shared.overwriteResult == QMessageBox::Yes ||
                    shared.overwriteResult == QMessageBox::YesToAll) {
                if (!file.open(QIODevice::WriteOnly)) {
                    emit imageStatus(pd.imgData, tr("Failed to save new SVG file"),
                                     Failed);
                    return NULL;
                }
                file.write(modifier.content());
            }
        }
        // and load QByteArray buffer to renderer
        if (!renderer.load(modifier.content())) {
            emit imageStatus(pd.imgData, tr("Failed to open changed SVG file"),
                             Failed);
            return NULL;
        }
    }
    else if (!renderer.load(pd.imagePath)) {
        emit imageStatus(pd.imgData, tr("Failed to open SVG file"), Failed);
        return NULL;
    }
    sizeComputed = computeSize(&renderer, pd.imagePath);
    if (sizeComputed == 2)
        return NULL;
    // keep aspect ratio
    if (shared.maintainAspect) {
        qreal w = width;
        qreal h = height;
        qreal targetRatio = w / h;
        QSizeF svgSize = renderer.defaultSize();
        qreal currentRatio = svgSize.width() / svgSize.height();
        if (currentRatio != targetRatio) {
            qreal diffRatio;
            if (currentRatio > targetRatio)
                diffRatio = w / svgSize.width();
            else
                diffRatio = h / svgSize.height();
            width = diffRatio * svgSize.width();
            height = diffRatio * svgSize.height();
        }
    }
    // create image
    QImage *img = new QImage(width, height, QImage::Format_ARGB32);
    fillImage(img);
    QPainter painter(img);
    renderer.render(&painter);
    // don't scale rendered image
    hasWidth = false;
    hasHeight = false;
    // finaly return the image pointer
    return img;
}

bool QgsAlignRaster::checkInputParameters()
{
  mErrorMessage.clear();

  if ( mCrsWkt == "_error_" )
  {
    mErrorMessage = QObject::tr( "Unable to reproject." );
    return false;
  }

  if ( mCellSizeX == 0 || mCellSizeY == 0 )
  {
    mErrorMessage = QObject::tr( "Cell size must not be zero." );
    return false;
  }

  mXSize = mYSize = 0;
  for ( int i = 0; i < 6; ++i )
    mGeoTransform[i] = 0;

  double finalExtent[4] = { 0, 0, 0, 0 };

  // for each raster: determine their extent in projected cfg
  for ( int i = 0; i < mRasters.count(); ++i )
  {
    Item& r = mRasters[i];

    RasterInfo info( r.inputFilename );

    QSizeF cs;
    QgsRectangle extent;
    if ( !suggestedWarpOutput( info, mCrsWkt, &cs, 0, &extent ) )
    {
      mErrorMessage = QString( "Failed to get suggested warp output.\n\n"
                               "File:\n%1\n\n"
                               "Source WKT:\n%2\n\nDestination WKT:\n%3" )
                      .arg( r.inputFilename )
                      .arg( info.mCrsWkt )
                      .arg( mCrsWkt );
      return false;
    }

    r.srcCellSizeInDestCRS = cs.width() * cs.height();

    if ( finalExtent[0] == 0 && finalExtent[1] == 0 && finalExtent[2] == 0 && finalExtent[3] == 0 )
    {
      // initialize with the first layer
      finalExtent[0] = extent.xMinimum();
      finalExtent[1] = extent.yMinimum();
      finalExtent[2] = extent.xMaximum();
      finalExtent[3] = extent.yMaximum();
    }
    else
    {
      // use intersection of rects
      if ( extent.xMinimum() > finalExtent[0] ) finalExtent[0] = extent.xMinimum();
      if ( extent.yMinimum() > finalExtent[1] ) finalExtent[1] = extent.yMinimum();
      if ( extent.xMaximum() < finalExtent[2] ) finalExtent[2] = extent.xMaximum();
      if ( extent.yMaximum() < finalExtent[3] ) finalExtent[3] = extent.yMaximum();
    }
  }

  // count in extra clip extent (if present)
  // 1. align requested rect to the grid - extend the rect if necessary
  // 2. intersect with clip extent with final extent

  if ( !( mClipExtent[0] == 0 && mClipExtent[1] == 0 && mClipExtent[2] == 0 && mClipExtent[3] == 0 ) )
  {
    // extend clip extent to grid
    double clipX0 = floor_with_tolerance(( mClipExtent[0] - mGridOffsetX ) / mCellSizeX ) * mCellSizeX + mGridOffsetX;
    double clipY0 = floor_with_tolerance(( mClipExtent[1] - mGridOffsetY ) / mCellSizeY ) * mCellSizeY + mGridOffsetY;
    double clipX1 = ceil_with_tolerance(( mClipExtent[2] - clipX0 ) / mCellSizeX ) * mCellSizeX + clipX0;
    double clipY1 = ceil_with_tolerance(( mClipExtent[3] - clipY0 ) / mCellSizeY ) * mCellSizeY + clipY0;
    if ( clipX0 > finalExtent[0] ) finalExtent[0] = clipX0;
    if ( clipY0 > finalExtent[1] ) finalExtent[1] = clipY0;
    if ( clipX1 < finalExtent[2] ) finalExtent[2] = clipX1;
    if ( clipY1 < finalExtent[3] ) finalExtent[3] = clipY1;
  }

  // align to grid - shrink the rect if necessary
  // output raster grid configuration (with no rotation/shear)
  // ... and raster width/height

  double originX = ceil_with_tolerance(( finalExtent[0] - mGridOffsetX ) / mCellSizeX ) * mCellSizeX + mGridOffsetX;;
  double originY = ceil_with_tolerance(( finalExtent[1] - mGridOffsetY ) / mCellSizeY ) * mCellSizeY + mGridOffsetY;
  int xSize = floor_with_tolerance(( finalExtent[2] - originX ) / mCellSizeX );
  int ySize = floor_with_tolerance(( finalExtent[3] - originY ) / mCellSizeY );

  if ( xSize <= 0 || ySize <= 0 )
  {
    mErrorMessage = QObject::tr( "No common intersecting area." );
    return false;
  }

  mXSize = xSize;
  mYSize = ySize;

  // build final geotransform...
  mGeoTransform[0] = originX;
  mGeoTransform[1] = mCellSizeX;
//.........这里部分代码省略.........

/*!
  Render a plot to a file

  Supported formats are:

  - pdf\n
  - ps\n
  - svg\n
  - all image formats supported by Qt, see QImageWriter::supportedImageFormats()

  \param plot Plot widget
  \param fileName Path of the file, where the document will be stored
  \param format Format for the document
  \param sizeMM Size for the document in millimeters.
  \param resolution Resolution in dots per Inch (dpi)

  \sa renderTo(), render(), QwtPainter::setRoundingAlignment()
*/
void QwtPolarRenderer::renderDocument( QwtPolarPlot *plot,
    const QString &fileName, const QString &format,
    const QSizeF &sizeMM, int resolution )
{
    if ( plot == NULL || sizeMM.isEmpty() || resolution <= 0 )
        return;

    QString title = plot->title().text();
    if ( title.isEmpty() )
        title = "Plot Document";

    const double mmToInch = 1.0 / 25.4;
    const QSizeF size = sizeMM * mmToInch * resolution;

    const QRectF documentRect( 0.0, 0.0, size.width(), size.height() );

    const QString fmt = format.toLower();
    if ( format == "pdf" || format == "ps" )
    {
        QPrinter printer;
        printer.setFullPage( true );
        printer.setPaperSize( sizeMM, QPrinter::Millimeter );
        printer.setDocName( title );
        printer.setOutputFileName( fileName );
        printer.setOutputFormat( ( format == "pdf" )
            ? QPrinter::PdfFormat : QPrinter::PostScriptFormat );
        printer.setResolution( resolution );

        QPainter painter( &printer );
        render( plot, &painter, documentRect );
    }
#ifndef QWT_NO_POLAR_SVG
#ifdef QT_SVG_LIB
#if QT_VERSION >= 0x040500
    else if ( format == "svg" )
    {
        QSvgGenerator generator;
        generator.setTitle( title );
        generator.setFileName( fileName );
        generator.setResolution( resolution );
        generator.setViewBox( documentRect );

        QPainter painter( &generator );
        render( plot, &painter, documentRect );
    }
#endif
#endif
#endif
    else
    {
        if ( QImageWriter::supportedImageFormats().indexOf(
            format.toLatin1() ) >= 0 )
        {
            const QRect imageRect = documentRect.toRect();
            const int dotsPerMeter = qRound( resolution * mmToInch * 1000.0 );

            QImage image( imageRect.size(), QImage::Format_ARGB32 );
            image.setDotsPerMeterX( dotsPerMeter );
            image.setDotsPerMeterY( dotsPerMeter );
            image.fill( QColor( Qt::white ).rgb() );

            QPainter painter( &image );
            render( plot, &painter, imageRect );
            painter.end();

            image.save( fileName, format.toLatin1() );
        }
    }
}

void QgsPieDiagram::renderDiagram( const QgsAttributes& att, QgsRenderContext& c, const QgsDiagramSettings& s, const QPointF& position )
{
  QPainter* p = c.painter();
  if ( !p )
  {
    return;
  }

  //get sum of values
  QList<double> values;
  double currentVal = 0;
  double valSum = 0;
  int valCount = 0;

  QList<int>::const_iterator catIt = s.categoryIndices.constBegin();
  for ( ; catIt != s.categoryIndices.constEnd(); ++catIt )
  {
    currentVal = att[*catIt].toDouble();
    values.push_back( currentVal );
    valSum += currentVal;
    if ( currentVal ) valCount++;
  }

  //draw the slices
  double totalAngle = 0;
  double currentAngle;

  //convert from mm / map units to painter units
  QSizeF spu = sizePainterUnits( s.size, s, c );
  double w = spu.width();
  double h = spu.height();

  double baseX = position.x();
  double baseY = position.y() - h;

  mPen.setColor( s.penColor );
  setPenWidth( mPen, s, c );
  p->setPen( mPen );

  // there are some values > 0 available
  if ( valSum > 0 )
  {
    QList<double>::const_iterator valIt = values.constBegin();
    QList< QColor >::const_iterator colIt = s.categoryColors.constBegin();
    for ( ; valIt != values.constEnd(); ++valIt, ++colIt )
    {
      if ( *valIt )
      {
        currentAngle = *valIt / valSum * 360 * 16;
        mCategoryBrush.setColor( *colIt );
        p->setBrush( mCategoryBrush );
        // if only 1 value is > 0, draw a circle
        if ( valCount == 1 )
        {
          p->drawEllipse( baseX, baseY, w, h );
        }
        else
        {
          p->drawPie( baseX, baseY, w, h, totalAngle + s.angleOffset, currentAngle );
        }
        totalAngle += currentAngle;
      }
    }
  }
  else // valSum > 0
  {
    // draw empty circle if no values are defined at all
    mCategoryBrush.setColor( Qt::transparent );
    p->setBrush( mCategoryBrush );
    p->drawEllipse( baseX, baseY, w, h );
  }
}

/**
 * Overrides the standard paint event.
 */
void ActivityWidget::paint(QPainter *p, const QStyleOptionGraphicsItem *, QWidget *)
{
    QRectF r = rect();
    const QSizeF sz = size();
    qreal w = sz.width();
    qreal h = sz.height();

    p->setPen(QPen(lineColor(), lineWidth()));
    p->setBrush(brush());

    switch(m_activityType) 
    {
    case Normal:
        p->drawRoundRect(r, (h * 60) / w, 60);
        break;

    case Initial:
        p->setBrush(QBrush(lineColor()));
        p->drawEllipse(r);
        break;

    case Final:
        p->setBrush(Qt::NoBrush);
        p->drawEllipse(r);
        Widget_Utils::drawCrossInEllipse(p, r);
        break;

    case End:
    {
        p->setBrush(Qt::NoBrush);
        qreal adj = lineWidth() + 1;
        p->drawEllipse(r.adjusted(+adj, +adj, -adj, -adj));

        p->setBrush(lineColor());
        adj = lineWidth() + 3;
        p->drawEllipse(r.adjusted(+adj, +adj, -adj, -adj));
        break;
    }

    case Branch:
    {
        QPolygonF array(4);
        array[0] = QPointF(w / 2, 0);
        array[1] = QPointF(w, h / 2);
        array[2] = QPointF(w / 2, h);
        array[3] = QPointF(0, h / 2);
        p->drawPolygon(array);
    }
    break;

    case Invok:
        p->drawRoundRect(r, (h * 60) / w, 60);
        {
            qreal x = w - (w/5);
            qreal y = h - (h/3);

            p->drawLine(QLineF(x,  y, x, y + 20));
            p->drawLine(QLineF(x - 10, y + 10, x + 10, y + 10));
            p->drawLine(QLineF(x - 10, y + 10, x - 10, y + 20));
            p->drawLine(QLineF(x + 10, y + 10, x + 10, y + 20));
        }
        break;

    case Param:
        p->drawRoundRect(r, (h * 60) / w, 60);
        break;
    }
}

double QgsTextDiagram::legendSize( double value, const QgsDiagramSettings &s, const QgsDiagramInterpolationSettings &is ) const
{
  QSizeF size = sizeForValue( value, s, is );
  return qMax( size.width(), size.height() );
}

void QgsTextDiagram::renderDiagram( const QgsFeature& feature, QgsRenderContext& c, const QgsDiagramSettings& s, QPointF position )
{
  QPainter* p = c.painter();
  if ( !p )
  {
    return;
  }

  //convert from mm / map units to painter units
  QSizeF spu = sizePainterUnits( s.size, s, c );
  double w = spu.width();
  double h = spu.height();

  double baseX = position.x();
  double baseY = position.y() - h;

  QVector<QPointF> textPositions; //midpoints for text placement
  int nCategories = s.categoryAttributes.size();
  for ( int i = 0; i < nCategories; ++i )
  {
    if ( mOrientation == Horizontal )
    {
      textPositions.push_back( QPointF( baseX + ( w / nCategories ) * i + w / nCategories / 2.0, baseY + h / 2.0 ) );
    }
    else //vertical
    {
      textPositions.push_back( QPointF( baseX + w / 2.0, baseY + h / nCategories * i + w / nCategories / 2.0 ) );
    }
  }

  mPen.setColor( s.penColor );
  setPenWidth( mPen, s, c );
  p->setPen( mPen );
  mBrush.setColor( s.backgroundColor );
  p->setBrush( mBrush );

  //draw shapes and separator lines first
  if ( mShape == Circle )
  {
    p->drawEllipse( baseX, baseY, w, h );

    //draw separator lines
    QList<QPointF> intersect; //intersections between shape and separation lines
    QPointF center( baseX + w / 2.0, baseY + h / 2.0 );
    double r1 = w / 2.0;
    double r2 = h / 2.0;

    for ( int i = 1; i < nCategories; ++i )
    {
      if ( mOrientation == Horizontal )
      {
        lineEllipseIntersection( QPointF( baseX + w / nCategories * i, baseY ), QPointF( baseX + w / nCategories * i, baseY + h ), center, r1, r2, intersect );
      }
      else //vertical
      {
        lineEllipseIntersection( QPointF( baseX, baseY + h / nCategories * i ), QPointF( baseX + w, baseY + h / nCategories * i ), center, r1, r2, intersect );
      }
      if ( intersect.size() > 1 )
      {
        p->drawLine( intersect.at( 0 ), intersect.at( 1 ) );
      }
    }
  }
  else if ( mShape == Rectangle )
  {
    p->drawRect( QRectF( baseX, baseY, w, h ) );
    for ( int i = 1; i < nCategories; ++i )
    {
      if ( mOrientation == Horizontal )
      {
        p->drawLine( QPointF( baseX + w / nCategories * i, baseY ), QPointF( baseX + w / nCategories * i, baseY + h ) );
      }
      else
      {
        p->drawLine( QPointF( baseX, baseY + h / nCategories * i ), QPointF( baseX + w, baseY + h / nCategories * i ) );
      }
    }
  }
  else //triangle
  {
    QPolygonF triangle;
    triangle << QPointF( baseX, baseY + h ) << QPointF( baseX + w, baseY + h ) << QPointF( baseX + w / 2.0, baseY );
    p->drawPolygon( triangle );

    QLineF triangleEdgeLeft( baseX + w / 2.0, baseY, baseX, baseY + h );
    QLineF triangleEdgeRight( baseX + w, baseY + h, baseX + w / 2.0, baseY );
    QPointF intersectionPoint1, intersectionPoint2;

    for ( int i = 1; i < nCategories; ++i )
    {
      if ( mOrientation == Horizontal )
      {
        QLineF verticalLine( baseX + w / nCategories * i, baseY + h, baseX + w / nCategories * i, baseY );
        if ( baseX + w / nCategories * i < baseX + w / 2.0 )
        {
          verticalLine.intersect( triangleEdgeLeft, &intersectionPoint1 );
        }
        else
        {
          verticalLine.intersect( triangleEdgeRight, &intersectionPoint1 );
//.........这里部分代码省略.........

static inline QSize qCeiling(const QSizeF &s)
{
    return QSize(qCeil(s.width()), qCeil(s.height()));
}

bool KisZoomAndPanTest::checkRotation(ZoomAndPanTester &t, qreal angle)
{
    // save old values
    QPoint oldOffset = t.coordinatesConverter()->documentOffset();
    QPointF oldCenteringCorrection = t.coordinatesConverter()->centeringCorrection();
    QPointF oldPreferredCenter = t.canvasController()->preferredCenter();
    QPointF oldRealCenterPoint = t.coordinatesConverter()->widgetToImage(t.coordinatesConverter()->widgetCenterPoint());
    QSize oldDocumentSize = t.canvasController()->documentSize();

    qreal baseAngle = t.coordinatesConverter()->rotationAngle();
    t.canvasController()->rotateCanvas(angle);

    // save result values
    QPoint newOffset = t.coordinatesConverter()->documentOffset();
    QPointF newCenteringCorrection = t.coordinatesConverter()->centeringCorrection();
    QPointF newPreferredCenter = t.canvasController()->preferredCenter();
    QPointF newRealCenterPoint = t.coordinatesConverter()->widgetToImage(t.coordinatesConverter()->widgetCenterPoint());
    QSize newDocumentSize = t.canvasController()->documentSize();


    // calculate theoretical preferred center
    QTransform rot;
    rot.rotate(angle);

    QSizeF dSize = t.coordinatesConverter()->imageSizeInFlakePixels();
    QPointF dPoint(dSize.width(), dSize.height());

    QPointF expectedPreferredCenter =
        (oldPreferredCenter - dPoint * correctionMatrix(baseAngle)) * rot +
         dPoint * correctionMatrix(baseAngle + angle);

    // calculate theoretical offset based on the real preferred center
    QPointF wPoint(t.canvasWidget()->size().width(), t.canvasWidget()->size().height());
    QPointF expectedOldOffset = oldPreferredCenter - 0.5 * wPoint;
    QPointF expectedNewOffset = newPreferredCenter - 0.5 * wPoint;

    bool preferredCenterAsExpected =
        compareWithRounding(expectedPreferredCenter, newPreferredCenter, 2);
    bool oldOffsetAsExpected =
        compareWithRounding(expectedOldOffset + oldCenteringCorrection, QPointF(oldOffset), 2);
    bool newOffsetAsExpected =
        compareWithRounding(expectedNewOffset + newCenteringCorrection, QPointF(newOffset), 3);

    qreal zoom = t.zoomController()->zoomAction()->effectiveZoom();
    bool realCenterPointAsExpected =
        compareWithRounding(oldRealCenterPoint, newRealCenterPoint, 2/zoom);


    if (!oldOffsetAsExpected ||
        !newOffsetAsExpected ||
        !preferredCenterAsExpected ||
        !realCenterPointAsExpected) {

        qDebug() << "***** ROTATE **************";

        if(!oldOffsetAsExpected) {
            qDebug() << " ### Old offset invariant broken";
        }

        if(!newOffsetAsExpected) {
            qDebug() << " ### New offset invariant broken";
        }

        if(!preferredCenterAsExpected) {
            qDebug() << " ### Preferred center invariant broken";
        }

        if(!realCenterPointAsExpected) {
            qDebug() << " ### *Real* center invariant broken";
        }

        qDebug() << ppVar(expectedOldOffset);
        qDebug() << ppVar(expectedNewOffset);
        qDebug() << ppVar(expectedPreferredCenter);
        qDebug() << ppVar(oldOffset) << ppVar(newOffset);
        qDebug() << ppVar(oldCenteringCorrection) << ppVar(newCenteringCorrection);
        qDebug() << ppVar(oldPreferredCenter) << ppVar(newPreferredCenter);
        qDebug() << ppVar(oldRealCenterPoint) << ppVar(newRealCenterPoint);
        qDebug() << ppVar(oldDocumentSize) << ppVar(newDocumentSize);
        qDebug() << ppVar(baseAngle) << "deg";
        qDebug() << ppVar(angle) << "deg";
        qDebug() << "***************************";
    }

    return preferredCenterAsExpected && oldOffsetAsExpected && newOffsetAsExpected && realCenterPointAsExpected;
}

QTransform scaleFromPercent(const QSizeF &size)
{
    const qreal w = qMax(static_cast<qreal>(1e-5), size.width());
    const qreal h = qMax(static_cast<qreal>(1e-5), size.height());
    return QTransform().scale(w/100, h/100);
}

void qDrawRoundedCorners(QPainter *p, qreal x1, qreal y1, qreal x2, qreal y2,
                         const QSizeF& r1, const QSizeF& r2,
                         Edge edge, BorderStyle s, QBrush c)
{
    const qreal pw = (edge == TopEdge || edge == BottomEdge) ? y2-y1 : x2-x1;
    if (s == BorderStyle_Double) {
        qreal wby3 = pw/3;
        switch (edge) {
        case TopEdge:
        case BottomEdge:
            qDrawRoundedCorners(p, x1, y1, x2, y1+wby3, r1, r2, edge, BorderStyle_Solid, c);
            qDrawRoundedCorners(p, x1, y2-wby3, x2, y2, r1, r2, edge, BorderStyle_Solid, c);
            break;
        case LeftEdge:
            qDrawRoundedCorners(p, x1, y1+1, x1+wby3, y2, r1, r2, LeftEdge, BorderStyle_Solid, c);
            qDrawRoundedCorners(p, x2-wby3, y1+1, x2, y2, r1, r2, LeftEdge, BorderStyle_Solid, c);
            break;
        case RightEdge:
            qDrawRoundedCorners(p, x1, y1+1, x1+wby3, y2, r1, r2, RightEdge, BorderStyle_Solid, c);
            qDrawRoundedCorners(p, x2-wby3, y1+1, x2, y2, r1, r2, RightEdge, BorderStyle_Solid, c);
            break;
        default:
            break;
        }
        return;
    } else if (s == BorderStyle_Ridge || s == BorderStyle_Groove) {
        BorderStyle s1, s2;
        if (s == BorderStyle_Groove) {
            s1 = BorderStyle_Inset;
            s2 = BorderStyle_Outset;
        } else {
            s1 = BorderStyle_Outset;
            s2 = BorderStyle_Inset;
        }
        int pwby2 = qRound(pw/2);
        switch (edge) {
        case TopEdge:
            qDrawRoundedCorners(p, x1, y1, x2, y1 + pwby2, r1, r2, TopEdge, s1, c);
            qDrawRoundedCorners(p, x1, y1 + pwby2, x2, y2, r1, r2, TopEdge, s2, c);
            break;
        case BottomEdge:
            qDrawRoundedCorners(p, x1, y1 + pwby2, x2, y2, r1, r2, BottomEdge, s1, c);
            qDrawRoundedCorners(p, x1, y1, x2, y2-pwby2, r1, r2, BottomEdge, s2, c);
            break;
        case LeftEdge:
            qDrawRoundedCorners(p, x1, y1, x1 + pwby2, y2, r1, r2, LeftEdge, s1, c);
            qDrawRoundedCorners(p, x1 + pwby2, y1, x2, y2, r1, r2, LeftEdge, s2, c);
            break;
        case RightEdge:
            qDrawRoundedCorners(p, x1 + pwby2, y1, x2, y2, r1, r2, RightEdge, s1, c);
            qDrawRoundedCorners(p, x1, y1, x2 - pwby2, y2, r1, r2, RightEdge, s2, c);
            break;
        default:
            break;
        }
    } else if ((s == BorderStyle_Outset && (edge == TopEdge || edge == LeftEdge))
            || (s == BorderStyle_Inset && (edge == BottomEdge || edge == RightEdge)))
            c = c.color().lighter();

    p->save();
    qreal pwby2 = pw/2;
    p->setBrush(Qt::NoBrush);
    QPen pen = qPenFromStyle(c, pw, s);
    pen.setCapStyle(Qt::SquareCap); // this eliminates the offby1 errors that we might hit below
    p->setPen(pen);
    switch (edge) {
    case TopEdge:
        if (!r1.isEmpty())
            p->drawArc(QRectF(x1 - r1.width() + pwby2, y1 + pwby2,
                              2*r1.width() - pw, 2*r1.height() - pw), 135*16, -45*16);
        if (!r2.isEmpty())
            p->drawArc(QRectF(x2 - r2.width() + pwby2, y1 + pwby2,
                       2*r2.width() - pw, 2*r2.height() - pw), 45*16, 45*16);
        break;
    case BottomEdge:
        if (!r1.isEmpty())
            p->drawArc(QRectF(x1 - r1.width() + pwby2, y2 - 2*r1.height() + pwby2,
                              2*r1.width() - pw, 2*r1.height() - pw), -90 * 16, -45 * 16);
        if (!r2.isEmpty())
            p->drawArc(QRectF(x2 - r2.width() + pwby2, y2 - 2*r2.height() + pwby2,
                       2*r2.width() - pw, 2*r2.height() - pw), -90 * 16, 45 * 16);
        break;
    case LeftEdge:
        if (!r1.isEmpty())
            p->drawArc(QRectF(x1 + pwby2, y1 - r1.height() + pwby2,
                       2*r1.width() - pw, 2*r1.height() - pw), 135*16, 45*16);
        if (!r2.isEmpty())
            p->drawArc(QRectF(x1 + pwby2, y2 - r2.height() + pwby2,
                       2*r2.width() - pw, 2*r2.height() - pw), 180*16, 45*16);
        break;
    case RightEdge:
        if (!r1.isEmpty())
            p->drawArc(QRectF(x2 - 2*r1.width() + pwby2, y1 - r1.height() + pwby2,
                       2*r1.width() - pw, 2*r1.height() - pw), 45*16, -45*16);
        if (!r2.isEmpty())
            p->drawArc(QRectF(x2 - 2*r2.width() + pwby2, y2 - r2.height() + pwby2,
                       2*r2.width() - pw, 2*r2.height() - pw), 315*16, 45*16);
        break;
    default:
        break;
//.........这里部分代码省略.........