コード例 #1
0
ファイル: RUnit.cpp プロジェクト: drjolo/qcad
/**
 * \return A presentable label for the given value. The number locale
 * is used to determine if the decimal point is a dot or a comma.
 * \see RSettings::getNumberLocale()
 */
QString RUnit::getLabel(double v, RDocument& document,
                        bool forceMaxPrecision, bool forceSuppressTrailingZeroes) {

    if (fabs(v) < 1e-6) {
        v = 0.0;
    }

    return RUnit::formatLinear(v, document.getUnit(),
                document.getLinearFormat(),
                forceMaxPrecision ? 8 : document.getLinearPrecision(),
                false,
                document.showLeadingZeroes(),
                forceSuppressTrailingZeroes ? false : document.showTrailingZeroes());

    //QLocale locale = RSettings::getNumberLocale();
    //return locale.toString(v, 'g', 6);
}
コード例 #2
0
ファイル: RGraphicsView.cpp プロジェクト: fallenwind/qcad
void RGraphicsView::autoZoom(int margin, bool ignoreEmpty) {
    RDocument* document = getDocument();
    if (document == NULL) {
        return;
    }
    RBox bb = document->getBoundingBox(true, ignoreEmpty);

    // TODO: optional:
    bb.growXY(
        RUnit::convert(
            document->getMaxLineweight()/100.0/2,
            RS::Millimeter,
            document->getUnit()
        )
    );

    zoomTo(bb, (margin!=-1 ? margin : getMargin()));
}
コード例 #3
0
ファイル: ROrthoGrid.cpp プロジェクト: Jackieee/qcad
void ROrthoGrid::paintRuler(RRuler& ruler, qreal devicePixelRatio) {
    RDocument* doc = view.getDocument();
    if (doc == NULL) {
        return;
    }

    RS::Unit unit = doc->getUnit();
    RS::LinearFormat linearFormat = doc->getLinearFormat();

    // use grid spacing if available or auto grid spacing:
    RVector localSpacing = spacing;
    if (!localSpacing.isValid() ||
        (autoSpacing.isValid() && autoSpacing.getMagnitude2d() < localSpacing.getMagnitude2d())) {
        localSpacing = autoSpacing;
    }

    // use meta grid spacing if available or auto meta grid spacing:
    RVector localMetaSpacing = metaSpacing;
    if (!localMetaSpacing.isValid() ||
        (autoMetaSpacing.isValid() && autoMetaSpacing.getMagnitude2d() < localMetaSpacing.getMagnitude2d())) {
        //localMetaSpacing = autoMetaSpacing;
    }

    //if (!localMetaSpacing.isValid()) {
    //    qDebug() << "no local meta spacing";
    //    return;
    //}

    if (localSpacing.getMagnitude()<1.0e-6 || localMetaSpacing.getMagnitude()<1.0e-6)  {
        //qDebug() << "local (meta) spacing too small";
        return;
    }

    RVector min = gridBox.getCorner1();
    RVector max = gridBox.getCorner2();
    bool isHorizontal = ruler.getOrientation() == Qt::Horizontal;

    double tickSpacing;
    //if (!RUnit::isMetric(doc->getUnit())) {
    if (isFractionalFormat(linearFormat) && !RUnit::isMetric(unit)) {
        if (isHorizontal) {
            tickSpacing = localSpacing.x;
        } else {
            tickSpacing = localSpacing.y;
        }
    } else {
        if (isHorizontal) {
            tickSpacing = localMetaSpacing.x;
        } else {
            tickSpacing = localMetaSpacing.y;
        }
        if (view.mapDistanceToView(tickSpacing) >= 80) {
            tickSpacing /= 10;
        } else if (view.mapDistanceToView(tickSpacing) >= 30) {
            tickSpacing /= 5;
        } else if (view.mapDistanceToView(tickSpacing) >= 20) {
            tickSpacing /= 2;
        }
    }

    // ideal tick spacing in pixels:
    int pSpacing = (int) ceil(view.mapDistanceToView(tickSpacing));

    QString l1 = RUnit::getLabel(isHorizontal ? min.x : min.y, *doc, false, true);
    QString l2 = RUnit::getLabel(isHorizontal ? max.x : max.y, *doc, false, true);
    int labelWidth = std::max(
            QFontMetrics(ruler.getFont()).boundingRect(l1).width(),
            QFontMetrics(ruler.getFont()).boundingRect(l2).width()) + 15;

    // smallest displayable distance between labels in steps (ticks):
    int minLabelStep = 1;
    if (pSpacing>0) {
        minLabelStep = labelWidth / pSpacing + 1;
    }

    int labelStep = minLabelStep;
    //if (!RUnit::isMetric(doc->getUnit())) {
    if (isFractionalFormat(linearFormat) && !RUnit::isMetric(unit)) {
        // non metric
        double f = 1.0/128;
        do {
            if (localMetaSpacing.isValid()) {
                if (isHorizontal) {
                    labelStep = RMath::mround(localMetaSpacing.x / localSpacing.x) * f;
                } else {
                    labelStep = RMath::mround(localMetaSpacing.y / localSpacing.y) * f;
                }
            }
            else {
                labelStep = (int)f;
            }
            f = f * 2;
            if (f>65536) {
                labelStep = -1;
            }
        } while (labelStep < minLabelStep && labelStep>=0);
    } else {
        // metric
        if (labelStep >= 3 && labelStep <= 4) {
            labelStep = 5;
        } else if (labelStep >= 6 && labelStep <= 9) {
            labelStep = 10;
        } else if (labelStep >= 11 && labelStep <= 19) {
            labelStep = 20;
        } else if (labelStep >= 21 && labelStep <= 99) {
            labelStep = 100;
        }
    }

    if (labelStep<0) {
        return;
    }

    if (labelStep<1) {
        labelStep = 1;
    }

    double minPos;
    double maxPos;
    if (isHorizontal) {
        minPos = (floor(view.mapFromView(RVector(0, 0)).x
                / (labelStep * tickSpacing))-1) * (labelStep * tickSpacing);
        maxPos = (ceil(view.mapFromView(RVector(view.getWidth(), 0)).x
                / (labelStep * tickSpacing))+1) * (labelStep * tickSpacing);
    } else {
        minPos = (floor(view.mapFromView(RVector(0, view.getHeight())).y
                / (labelStep * tickSpacing))-1) * (labelStep * tickSpacing);
        maxPos = (ceil(view.mapFromView(RVector(0, 0)).y
                / (labelStep * tickSpacing))+1) * (labelStep * tickSpacing);
    }

    if ((maxPos - minPos) / tickSpacing > 1e3) {
        return;
    }

    int c;
    double p;
    for (c = 0, p = minPos; p < maxPos; p += tickSpacing, ++c) {
        bool hasLabel = c % labelStep == 0;
        double v;
        if (isHorizontal) {
            v = view.mapToView(RVector(p, 0)).x;
        } else {
            v = view.mapToView(RVector(0, p)).y;
        }
        ruler.paintTick(v*devicePixelRatio, hasLabel, hasLabel ? RUnit::getLabel(p, *doc, false, true, true) : QString());
    }
}
コード例 #4
0
ファイル: ROrthoGrid.cpp プロジェクト: Jackieee/qcad
/**
 * Updates the grid information, in particular the grid spacing and
 * grid region to the current view port.
 */
void ROrthoGrid::update(bool force) {
    if (!force && viewBox==view.getBox()) {
        return;
    }

    viewBox = view.getBox();
    int viewportNumber = view.getViewportNumber();

    RDocument* doc = view.getDocument();
    if (doc == NULL) {
        qWarning() << "ROrthoGrid::update: document is NULL";
        return;
    }

    RGraphicsScene* scene = view.getScene();
    if (scene==NULL) {
        qWarning() << "ROrthoGrid::update: scene is NULL";
        return;
    }

    RS::ProjectionRenderingHint hint =  scene->getProjectionRenderingHint();

    // for 3d views, we have no convenient way to calculate the grid dimensions:
    if (hint == RS::RenderThreeD) {
        gridBox = RBox(RVector(-1000, -1000), RVector(1000, 1000));
        spacing = RVector(10.0, 10.0);
        return;
    }

    QString key;

    key = QString("Grid/IsometricGrid0%1").arg(viewportNumber);
    isometric = doc->getVariable(key, false, true).toBool();

    RS::Unit unit = doc->getUnit();
    RS::LinearFormat linearFormat = doc->getLinearFormat();

    // default values for missing configurations and 'auto' settings:
    minSpacing.valid = true;
    minMetaSpacing.valid = true;
    if (isFractionalFormat(linearFormat) && !RUnit::isMetric(unit)) {
        //minSpacing.x = minSpacing.y = RNANDOUBLE;
        //minMetaSpacing.x = minMetaSpacing.y = RNANDOUBLE;
        minSpacing.x = minSpacing.y = RUnit::convert(1.0, RS::Inch, unit) / 1024;
        minMetaSpacing.x = minMetaSpacing.y = RUnit::convert(1.0, RS::Inch, unit) / 1024;
    }
    else {
        minSpacing.x = minSpacing.y = 1.0e-6;
        minMetaSpacing.x = minMetaSpacing.y = RNANDOUBLE;
        //minSpacing.x = minSpacing.y = RNANDOUBLE;
        //minMetaSpacing.x = minMetaSpacing.y = 1.0e-6;
    }

    key = QString("Grid/GridSpacingX0%1").arg(viewportNumber);
    QVariant strSx = doc->getVariable(key, QVariant(), true);
    key = QString("Grid/GridSpacingY0%1").arg(viewportNumber);
    QVariant strSy = doc->getVariable(key, QVariant(), true);

    spacing.valid = true;

    bool autoX = !strSx.isValid() || strSx.toString()=="auto";
    bool autoY = !strSy.isValid() || strSy.toString()=="auto";

    // grid spacing x:
    if (!autoX) {
        // fixed:
        double d = RMath::eval(strSx.toString());
        if (!RMath::hasError() && d>RS::PointTolerance) {
            minSpacing.x = spacing.x = d;
        }
    }

    // grid spacing y:
    if (!autoY) {
        double d = RMath::eval(strSy.toString());
        if (!RMath::hasError() && d>RS::PointTolerance) {
            minSpacing.y = spacing.y = d;
        }
    }




    // meta grid:
    key = QString("Grid/MetaGridSpacingX0%1").arg(viewportNumber);
    QVariant strMsx = doc->getVariable(key, QVariant(), true);
    key = QString("Grid/MetaGridSpacingY0%1").arg(viewportNumber);
    QVariant strMsy = doc->getVariable(key, QVariant(), true);

    metaSpacing.valid = true;

    bool metaAutoX = !strMsx.isValid() || strMsx.toString()=="auto";
    bool metaAutoY = !strMsy.isValid() || strMsy.toString()=="auto";

    // meta grid spacing x:
    if (!metaAutoX) {
        // fixed:
        double d = RMath::eval(strMsx.toString());
        if (d>RS::PointTolerance) {
            minMetaSpacing.x = metaSpacing.x = d;
        }
    }

    // meta grid spacing y:
    if (!metaAutoY) {
        // fixed:
        double d = RMath::eval(strMsy.toString());
        if (d>RS::PointTolerance) {
            minMetaSpacing.y = metaSpacing.y = d;
        }
    }

    // auto scale grid:
    QList<RVector> s = getIdealSpacing(minPixelSpacing, minSpacing, minMetaSpacing);
    if (RSettings::getAutoScaleGrid()) {
        autoSpacing = spacing = s.at(0);
    }
    if (RSettings::getAutoScaleMetaGrid()) {
        autoMetaSpacing = metaSpacing = s.at(1);
    }

    // switch grid off below given pixel limit:
    if (view.mapDistanceToView(spacing.x) < minPixelSpacing) {
        spacing = RVector::invalid;
    }
    if (view.mapDistanceToView(metaSpacing.x) < minPixelSpacing) {
        metaSpacing = RVector::invalid;
    }
    if (view.mapDistanceToView(spacing.y) < minPixelSpacing) {
        spacing = RVector::invalid;
    }
    if (view.mapDistanceToView(metaSpacing.y) < minPixelSpacing) {
        metaSpacing = RVector::invalid;
    }

//    qDebug() << "spacing: " << spacing;
//    qDebug() << "minSpacing: " << minSpacing;
//    qDebug() << "metaSpacing: " << metaSpacing;

//    if (scaleGrid) {
//        QList<RVector> s = ROrthoGrid::getIdealSpacing(view, minPixelSpacing, minSpacing);
//        spacing = s.at(0);
//        metaSpacing = s.at(1);
//    } else {
//        spacing = minSpacing;
//    }
    
    RVector minGridPoint;
    RVector maxGridPoint;

    spacing.z = 1;

    if (isometric) {
        spacing.x = spacing.y * 2.0 * sin(M_PI/3.0);
        metaSpacing.x = metaSpacing.y * 2.0 * sin(M_PI/3.0);

        spacing = spacing / 2;
        //metaSpacing = metaSpacing / 2;
    }

    minGridPoint = viewBox.getCorner1();
    minGridPoint = minGridPoint.getDividedComponents(spacing).getFloor();
    minGridPoint = minGridPoint.getMultipliedComponents(spacing);

    maxGridPoint = viewBox.getCorner2();
    maxGridPoint = maxGridPoint.getDividedComponents(spacing).getCeil();
    maxGridPoint = maxGridPoint.getMultipliedComponents(spacing);

    minGridPoint.z = viewBox.getCorner1().z;
    maxGridPoint.z = viewBox.getCorner2().z;
    
    gridBox = RBox(minGridPoint, maxGridPoint);

    minGridPoint = viewBox.getCorner1();
    minGridPoint = minGridPoint.getDividedComponents(metaSpacing).getFloor();
    minGridPoint = minGridPoint.getMultipliedComponents(metaSpacing);

    maxGridPoint = viewBox.getCorner2();
    maxGridPoint = maxGridPoint.getDividedComponents(metaSpacing).getCeil();
    maxGridPoint = maxGridPoint.getMultipliedComponents(metaSpacing);

    minGridPoint.z = viewBox.getCorner1().z;
    maxGridPoint.z = viewBox.getCorner2().z;
    
    metaGridBox = RBox(minGridPoint, maxGridPoint);

    if (isometric) {
        QString i1 = RUnit::getLabel(spacing.x / cos(M_PI/6), *doc, true, true);
        QString i2 = RUnit::getLabel(metaSpacing.x / cos(M_PI/6) / 2, *doc, true, true);
        infoText = QString("%1 < %2").arg(i1).arg(i2);
    }
    else {
        QString i1 = RUnit::getLabel(spacing.x, *doc, true, true);
        QString i2 = RUnit::getLabel(metaSpacing.x, *doc, true, true);
        infoText = QString("%1 < %2").arg(i1).arg(i2);
    }
}
コード例 #5
0
void RClipboardOperation::copy(
        RDocument& src, RDocument& dest,
        const RVector& offset,
        double scale,
        double rotation,
        bool flipHorizontal,
        bool flipVertical,
        bool toCurrentLayer,
        bool toCurrentBlock,
        bool overwriteLayers,
        bool overwriteBlocks,
        const QString& blockName,
        const QString& layerName,
        RTransaction& transaction,
        bool selectionOnly, bool clear,
        bool toModelSpaceBlock,
        bool preview,
        const RQMapQStringQString& attributes) const {

    bool overwriteLinetypes = false;

    double unitScale;
    if (src.getUnit()==RS::None) {
        unitScale = 1.0;
    }
    else {
        unitScale = RUnit::convert(1.0, src.getUnit(), dest.getUnit());
    }

    if (clear) {
        dest.clear();
    }

    QSet<REntity::Id> entityIdsSet;
    if (selectionOnly) {
        entityIdsSet = src.querySelectedEntities();
    }
    else {
        entityIdsSet = src.queryAllEntities();
    }
    QList<REntity::Id> entityIdsList = src.getStorage().orderBackToFront(entityIdsSet);

    // Non-const offset. reset to 0/0/0 if copying to block
    //    (offset implemented as block reference offset).
    RVector off = offset;

    bool hasBlock = false;

    QSet<REntity::Id> attributeIds;

    // this part is used to insert ('paste') blocks from the part library
    // as new blocks:
    QSharedPointer<RBlockReferenceEntity> refp;
    if (!blockName.isNull()) {
        QSharedPointer<RBlock> block;
        hasBlock = dest.hasBlock(blockName);

        // block does not exist in dest - or -
        // block exists in dest and must be overwritten:
        if (!hasBlock || overwriteBlocks) {
            block = QSharedPointer<RBlock> (new RBlock(&dest, blockName,
                    RVector(0, 0, 0)));
            transaction.overwriteBlock(block);
        }

        // block exists and must not be overwritten:
        else {
            block = dest.queryBlock(blockName);
        }

        Q_ASSERT(!block.isNull());

        // create new block reference that references new, overwritten or existing block
        // (insert later, when block is complete, so we have bounding box for spatial index):
        RBlockReferenceEntity* ref = new RBlockReferenceEntity(&dest,
                RBlockReferenceData(block->getId(), RVector(0,0,0),
                                    RVector(1.0, 1.0, 1.0), 0.0));
        refp = QSharedPointer<RBlockReferenceEntity>(ref);
        refp->setBlockId(dest.getCurrentBlockId());
        off = RVector(0, 0, 0);
        if (flipHorizontal) {
            refp->flipHorizontal();
        }
        if (flipVertical) {
            refp->flipVertical();
        }
        //ref->scale(scale * unitScale);
        refp->scale(scale);
        refp->rotate(rotation);
        refp->move(offset);

        // create attribute for each attribute definition in block with
        // invalid parent ID (fixed later, when block reference ID is known):
        QSet<REntity::Id> ids = src.queryAllEntities();
        QSet<REntity::Id>::iterator it;
        for (it=ids.begin(); it!=ids.end(); it++) {
            REntity::Id id = *it;
            QSharedPointer<RAttributeDefinitionEntity> attDef =
                src.queryEntity(id).dynamicCast<RAttributeDefinitionEntity>();
            if (attDef.isNull()) {
                continue;
            }

            QSharedPointer<RAttributeEntity> att(
                new RAttributeEntity(
                    &dest,
                    RAttributeData(attDef->getData(), REntity::INVALID_ID, attDef->getTag())
                )
            );
            att->scale(unitScale);
            refp->applyTransformationTo(*att);

            // assign values to attributes:
            QString tag = att->getTag();
            if (attributes.contains(tag)) {
                att->setText(attributes[tag]);
            }

            // make sure the attribute has the correct layer ID of the
            // corresponding layer in dest:
            QSharedPointer<RLayer> destLayer = copyEntityLayer(*attDef, src, dest, overwriteLayers, transaction);
            att->setLayerId(destLayer->getId());

            QSharedPointer<RLinetype> destLinetype = copyEntityLinetype(*attDef, src, dest, overwriteLinetypes, transaction);
            att->setLinetypeId(destLinetype->getId());

            transaction.addObject(att, false);
            attributeIds.insert(att->getId());
        }

        scale = 1.0;
        rotation = 0.0;
        flipHorizontal = false;
        flipVertical = false;
        toCurrentLayer = false;
        //toCurrentBlock = false;
    }


    // copy entities from src to dest:
    //     if the block existed already in dest and is not overwritten,
    //     there's nothing to do here:
    if (!hasBlock || overwriteBlocks || preview) {
        copiedLayers.clear();
        copiedLinetypes.clear();
        copiedBlocks.clear();

        int counter = 0;
        QList<REntity::Id>::iterator it;
        for (it=entityIdsList.begin(); it!=entityIdsList.end(); ++it) {
            if (preview && ++counter>RSettings::getPreviewEntities()) {
                break;
            }

            QSharedPointer<REntity> entity = src.queryEntityDirect(*it);
            if (entity.isNull() || entity->isUndone()) {
                continue;
            }

            copyEntity(
                        *entity.data(),
                        src, dest,
                        off, scale, unitScale, rotation,
                        flipHorizontal, flipVertical,
                        toCurrentLayer, toCurrentBlock,
                        overwriteLayers, overwriteBlocks,
                        blockName,
                        transaction,
                        toModelSpaceBlock       // to model space: true for copy
                        // (allow copy from inside any block definition),
                        // false for paste
                        );
        }
    }

    // only overwrite layers:
    else if (overwriteLayers) {
        copiedLayers.clear();

        int counter = 0;
        QList<REntity::Id>::iterator it;
        for (it=entityIdsList.begin(); it!=entityIdsList.end(); ++it) {
            if (preview && ++counter>RSettings::getPreviewEntities()) {
                break;
            }

            QSharedPointer<REntity> entity = src.queryEntityDirect(*it);
            if (entity.isNull() || entity->isUndone()) {
                continue;
            }

            copyEntityLayer(
                        *entity.data(),
                        src, dest,
                        overwriteLayers,
                        transaction
                        );
        }
    }

    // copying of entire block complete, insert block reference now since
    // we now have the bounding box for the spatial index:
    if (!refp.isNull()) {
        bool useCurrentAttributes = true;
        if (!layerName.isEmpty()) {
            useCurrentAttributes = false;
            refp->setLayerId(dest.getLayerId(layerName));
        }
        transaction.addObject(refp, useCurrentAttributes);

        // fix parent ID of attributes created by the new inserted block:
        REntity::Id refId = refp->getId();
        //QSet<REntity::Id> ids = dest.queryAllEntities();
        QSet<REntity::Id>::iterator it;
        for (it=attributeIds.begin(); it!=attributeIds.end(); it++) {
            REntity::Id id = *it;
            QSharedPointer<RAttributeEntity> e =
                dest.queryEntityDirect(id).dynamicCast<RAttributeEntity>();
            if (e.isNull()) {
                continue;
            }

            if (e->getParentId()==REntity::INVALID_ID) {
                e->setParentId(refId);
            }
        }
    }

    transaction.endCycle();
}
コード例 #6
0
/**
 * Adds the given entity (and its layer(s) and block reference(s)) to the
 * given document.
 *
 * \param blockName Name of an existing block in dest
 */
void RClipboardOperation::copyEntity(
        REntity& entity,
        RDocument& src, RDocument& dest,
        const RVector& offset,
        double scale,
        double unitScale,
        double rotation,
        bool flipHorizontal,
        bool flipVertical,
        bool toCurrentLayer,
        bool toCurrentBlock,
        bool overwriteLayers,
        bool overwriteBlocks,
        const QString& blockName,
        RTransaction& transaction,
        bool toModelSpaceBlock) const {

    bool overwriteLinetypes = false;

    QSharedPointer<RLayer> destLayer = copyEntityLayer(entity, src, dest, overwriteLayers, transaction);
    QSharedPointer<RLinetype> destLinetype = copyEntityLinetype(entity, src, dest, overwriteLinetypes, transaction);

    // add block the entity belongs to, if the block exists it is overwritten
    // if 'overwriteBlocks' is true:
    QSharedPointer<RBlock> srcBlock =
        src.queryBlock(entity.getBlockId());
    if (srcBlock.isNull()) {
        qWarning("RClipboardOperation::copyToDocument: "
            "block of entity is NULL.");
        return;
    }
    QString srcBlockName = srcBlock->getName();
    QSharedPointer<RBlock> destBlock;
    if (copiedBlocks.contains(srcBlockName)) {
        destBlock = copiedBlocks.value(srcBlockName);
    }
    else {
        QString destBlockName;
        if (!blockName.isNull()) {
            destBlockName = blockName;
        }
        else {
            if (toCurrentBlock) {
                destBlockName = dest.getBlockName(dest.getCurrentBlockId());
            }
            else {
                destBlockName = srcBlock->getName();
            }
        }
        if (!dest.hasBlock(destBlockName) || (overwriteBlocks && blockName.isNull())) {
            destBlock = QSharedPointer<RBlock> (srcBlock->clone());
            dest.getStorage().setObjectId(*destBlock.data(), RObject::INVALID_ID);
            dest.getStorage().setObjectHandle(*destBlock.data(), RObject::INVALID_HANDLE);
            destBlock->setDocument(&dest);
            if (dest.hasBlock(destBlockName)) {
                if (!transaction.overwriteBlock(destBlock)) {
                    destBlock = dest.queryBlock(destBlockName);
                }
            }
            else {
                transaction.addObject(destBlock);
            }
        } else {
            destBlock = dest.queryBlock(destBlockName);
        }

        copiedBlocks.insert(srcBlockName, destBlock);
    }

    Q_ASSERT(destBlock->getId()!=RBlock::INVALID_ID);

    // entity is a block reference:
    // add entities of the block the block reference refers to (the block
    // definition is then added automatically):
    // if block contents has already been copied, do nothing
    RBlockReferenceEntity* blockRef =
        dynamic_cast<RBlockReferenceEntity*>(&entity);
    if (blockRef!=NULL && !copiedBlockContents.contains(blockRef->getReferencedBlockId())) {
        QSharedPointer<RBlock> refBlock =
            src.queryBlock(blockRef->getReferencedBlockId());
        if (refBlock.isNull()) {
            qWarning("RClipboardOperation::copyToDocument: "
                "entity references a NULL block.");
            return;
        }

        copiedBlockContents.insert(blockRef->getReferencedBlockId());

        // TODO: don't do this twice:
        //qDebug() << "RClipboardOperation::copyToDocument: copying block: " << refBlock->getName();
        // if block exists in dest, it has already been copied or was
        // already there and needs to be overwritten:
        QSharedPointer<RBlock> refBlockDest = dest.queryBlock(refBlock->getName());
        if (refBlockDest.isNull() || overwriteBlocks) {
            QSet<REntity::Id> ids = src.queryBlockEntities(refBlock->getId());
            bool first = true;
            QSet<REntity::Id>::iterator it;
            for (it=ids.begin(); it!=ids.end(); ++it) {
                QSharedPointer<REntity> e = src.queryEntityDirect(*it);
                if (e.isNull()) {
                    continue;
                }

                copyEntity(
                    *e.data(),
                    src, dest,
                    RVector::nullVector,
                    1.0,          // scale from user options not applied to block contents 
                                  // but to block reference
                    unitScale, 
                    0.0,
                    false, false, // no flips
                    false, false, // keep original block and layer
                    overwriteLayers, first && overwriteBlocks,
                    QString(),
                    transaction,
                    false         // not to model space but actual block
                );
                first = false;
            }
        }
    }

    // add entity self:
    QSharedPointer<REntity> destEntity = QSharedPointer<REntity>(entity.clone());
    //dest.getStorage().setObjectId(*destEntity.data(), RObject::INVALID_ID);
    dest.getStorage().setObjectHandle(*destEntity.data(), RObject::INVALID_HANDLE);
    destEntity->setSelected(false);

    // apply transformations:
    if (flipHorizontal) {
        destEntity->flipHorizontal();
    }
    if (flipVertical) {
        destEntity->flipVertical();
    }
    if (blockRef!=NULL) {
        destEntity->scale(scale);
    }
    else {
        destEntity->scale(scale * unitScale);
    }
    destEntity->rotate(rotation);
    // correct block reference offset. necessary for unit conversion:
    if (blockRef!=NULL && src.getUnit()!=dest.getUnit()) {
        destEntity->move(-blockRef->getPosition());
        destEntity->move(blockRef->getPosition() * unitScale);
    }
    destEntity->move(offset);

    destEntity->setDocument(&dest);
    if (toCurrentLayer) {
        // paste to current layer:
        destEntity->setLayerId(dest.getCurrentLayerId());
    }
    else {
        // paste to original layer:
        Q_ASSERT(!destLayer.isNull());
        destEntity->setLayerId(destLayer->getId());
    }

    destEntity->setLinetypeId(destLinetype->getId());

    if (toModelSpaceBlock) {
        destEntity->setBlockId(dest.getModelSpaceBlockId());
    }
    else {
        destEntity->setBlockId(destBlock->getId());
    }

    // correct referenced block id of pasted block reference:
    QSharedPointer<RBlockReferenceEntity> destBlockRef =
        destEntity.dynamicCast<RBlockReferenceEntity>();
    if (!destBlockRef.isNull() && blockRef!=NULL) {
        QString bn = src.getBlockName(blockRef->getReferencedBlockId());
        RBlock::Id blockId = dest.getBlockId(bn);
        destBlockRef->setReferencedBlockId(blockId);
//        qDebug() << "not yet updated block ref: " << *destBlockRef;
//        destBlockRef->update();
//        qDebug() << "updated block ref: " << *destBlockRef;
    }

    transaction.addObject(destEntity, false, true);
}