src/ModuleBase/ModuleBase_Tools.cpp

   1 // Copyright (C) 2014-20xx CEA/DEN, EDF R&D
   2
   3 // File:        ModuleBase_Tools.cpp
   4 // Created:     11 July 2014
   5 // Author:      Vitaly Smetannikov
   6
   7 #include "ModuleBase_Tools.h"
   8
   9 #include <ModuleBase_ParamIntSpinBox.h>
  10 #include <ModuleBase_ParamSpinBox.h>
  11 #include <ModuleBase_WidgetFactory.h>
  12 #include <ModuleBase_IWorkshop.h>
  13 #include <ModuleBase_IModule.h>
  14 #include <ModuleBase_IconFactory.h>
  15
  16 #include <ModelAPI_Attribute.h>
  17 #include <ModelAPI_AttributeRefAttr.h>
  18 #include <ModelAPI_AttributeReference.h>
  19 #include <ModelAPI_AttributeSelection.h>
  20 #include <ModelAPI_AttributeSelectionList.h>
  21 #include <ModelAPI_AttributeRefList.h>
  22 #include <ModelAPI_AttributeRefAttrList.h>
  23 #include <Events_Loop.h>
  24
  25 #include <ModelAPI_Data.h>
  26 #include <ModelAPI_Result.h>
  27 #include <ModelAPI_ResultCompSolid.h>
  28 #include <ModelAPI_ResultParameter.h>
  29 #include <ModelAPI_Tools.h>
  30 #include <ModelAPI_Session.h>
  31 #include <ModelAPI_Events.h>
  32
  33 #include <TopoDS_Iterator.hxx>
  34
  35 #include <GeomDataAPI_Point2D.h>
  36 #include <Events_Error.h>
  37
  38 #include <Config_PropManager.h>
  39
  40 #include <QWidget>
  41 #include <QLayout>
  42 #include <QPainter>
  43 #include <QBitmap>
  44 #include <QDoubleSpinBox>
  45 #include <QGraphicsDropShadowEffect>
  46 #include <QColor>
  47 #include <QApplication>
  48
  49 #include <sstream>
  50 #include <string>
  51
  52 const double tolerance = 1e-7;
  53
  54 //#define DEBUG_ACTIVATE_WINDOW
  55 //#define DEBUG_SET_FOCUS
  56
  57 namespace ModuleBase_Tools {
  58
  59 //******************************************************************
  60
  61 //******************************************************************
  62
  63 void adjustMargins(QWidget* theWidget)
  64 {
  65   if(!theWidget)
  66     return;
  67   adjustMargins(theWidget->layout());
  68 }
  69
  70 void adjustMargins(QLayout* theLayout)
  71 {
  72   if(!theLayout)
  73     return;
  74   theLayout->setContentsMargins(2, 5, 2, 5);
  75   theLayout->setSpacing(4);
  76 }
  77
  78 void zeroMargins(QWidget* theWidget)
  79 {
  80   if(!theWidget)
  81     return;
  82   zeroMargins(theWidget->layout());
  83 }
  84
  85 void zeroMargins(QLayout* theLayout)
  86 {
  87   if(!theLayout)
  88     return;
  89   theLayout->setContentsMargins(0, 0, 0, 0);
  90   theLayout->setSpacing(5);
  91 }
  92
  93 void activateWindow(QWidget* theWidget, const QString& theInfo)
  94 {
  95   theWidget->activateWindow();
  96
  97 #ifdef DEBUG_ACTIVATE_WINDOW
  98   qDebug(QString("activateWindow: %1").arg(theInfo).toStdString().c_str());
  99 #endif
 100 }
 101
 102 void setFocus(QWidget* theWidget, const QString& theInfo)
 103 {
 104   theWidget->setFocus();
 105
 106 #ifdef DEBUG_SET_FOCUS
 107   qDebug(QString("setFocus: %1").arg(theInfo).toStdString().c_str());
 108 #endif
 109 }
 110
 111 void setShadowEffect(QWidget* theWidget, const bool isSetEffect)
 112 {
 113   if (isSetEffect) {
 114     QGraphicsDropShadowEffect* aGlowEffect = new QGraphicsDropShadowEffect();
 115     aGlowEffect->setOffset(.0);
 116     aGlowEffect->setBlurRadius(10.0);
 117     aGlowEffect->setColor(QColor(0, 170, 255)); // Light-blue color, #00AAFF
 118     theWidget->setGraphicsEffect(aGlowEffect);
 119   }
 120   else {
 121     QGraphicsEffect* anEffect = theWidget->graphicsEffect();
 122     if(anEffect)
 123     anEffect->deleteLater();
 124     theWidget->setGraphicsEffect(NULL);
 125   }
 126 }
 127
 128 QPixmap composite(const QString& theAdditionalIcon, const QString& theIcon)
 129 {
 130   QImage anIcon = ModuleBase_IconFactory::loadImage(theIcon);
 131   QImage anAditional(theAdditionalIcon);
 132
 133   if (anIcon.isNull())
 134     return QPixmap();
 135
 136   int anAddWidth = anAditional.width();
 137   int anAddHeight = anAditional.height();
 138
 139   int aWidth = anIcon.width();
 140   int aHeight = anIcon.height();
 141
 142   int aStartWidthPos = aWidth - anAddWidth - 1;
 143   int aStartHeightPos = aHeight - anAddHeight - 1;
 144
 145   for (int i = 0; i < anAddWidth && i + aStartWidthPos < aWidth; i++)
 146   {
 147     for (int j = 0; j < anAddHeight && j + aStartHeightPos < aHeight; j++)
 148     {
 149       if (qAlpha(anAditional.pixel(i, j)) > 0)
 150         anIcon.setPixel(i + aStartWidthPos, j + aStartHeightPos, anAditional.pixel(i, j));
 151     }
 152   }
 153   return QPixmap::fromImage(anIcon);
 154 }
 155
 156 QPixmap lighter(const QString& theIcon, const int theLighterValue)
 157 {
 158   QImage anIcon = ModuleBase_IconFactory::loadImage(theIcon);
 159   if (anIcon.isNull())
 160     return QPixmap();
 161
 162   QImage aResult = ModuleBase_IconFactory::loadImage(theIcon);
 163   for (int i = 0; i < anIcon.width(); i++)
 164   {
 165     for (int j = 0; j < anIcon.height(); j++)
 166     {
 167       QRgb anRgb = anIcon.pixel(i, j);
 168       QColor aPixelColor(qRed(anRgb), qGreen(anRgb), qBlue(anRgb),
 169                          qAlpha(aResult.pixel(i, j)));
 170
 171       QColor aLighterColor = aPixelColor.lighter(theLighterValue);
 172       aResult.setPixel(i, j, qRgba(aLighterColor.red(), aLighterColor.green(),
 173                                     aLighterColor.blue(), aLighterColor.alpha()));
 174     }
 175   }
 176   return QPixmap::fromImage(aResult);
 177 }
 178
 179 void setSpinText(ModuleBase_ParamSpinBox* theSpin, const QString& theText)
 180 {
 181   if (theSpin->text() == theText)
 182     return;
 183   // In order to avoid extra text setting because it will
 184   // reset cursor position in control
 185   bool isBlocked = theSpin->blockSignals(true);
 186   theSpin->setText(theText);
 187   theSpin->blockSignals(isBlocked);
 188 }
 189
 190 void setSpinValue(QDoubleSpinBox* theSpin, double theValue)
 191 {
 192   if (fabs(theSpin->value() - theValue) < tolerance)
 193     return;
 194   bool isBlocked = theSpin->blockSignals(true);
 195   theSpin->setValue(theValue);
 196   theSpin->blockSignals(isBlocked);
 197 }
 198
 199 void setSpinValue(ModuleBase_ParamSpinBox* theSpin, double theValue)
 200 {
 201   if (fabs(theSpin->value() - theValue) < tolerance)
 202     return;
 203   bool isBlocked = theSpin->blockSignals(true);
 204   theSpin->setValue(theValue);
 205   theSpin->blockSignals(isBlocked);
 206 }
 207
 208 void setSpinText(ModuleBase_ParamIntSpinBox* theSpin, const QString& theText)
 209 {
 210   // In order to avoid extra text setting because it will
 211   // reset cursor position in control
 212   if (theSpin->text() == theText)
 213     return;
 214   bool isBlocked = theSpin->blockSignals(true);
 215   theSpin->setText(theText);
 216   theSpin->blockSignals(isBlocked);
 217 }
 218
 219 void setSpinValue(ModuleBase_ParamIntSpinBox* theSpin, int theValue)
 220 {
 221   if (theSpin->value() == theValue)
 222     return;
 223   bool isBlocked = theSpin->blockSignals(true);
 224   theSpin->setValue(theValue);
 225   theSpin->blockSignals(isBlocked);
 226 }
 227
 228 QString objectInfo(const ObjectPtr& theObj, const bool isUseAttributesInfo)
 229 {
 230   QString aFeatureStr = "feature";
 231   if (!theObj.get())
 232     return aFeatureStr;
 233
 234   std::ostringstream aPtrStr;
 235   aPtrStr << "[" << theObj.get() << "]";
 236
 237   ResultPtr aRes = std::dynamic_pointer_cast<ModelAPI_Result>(theObj);
 238   FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(theObj);
 239   if(aRes.get()) {
 240     aFeatureStr.append(QString("(result%1)").arg(aPtrStr.str().c_str()).toStdString() .c_str());
 241     if (aRes->isDisabled())
 242       aFeatureStr.append("[disabled]");
 243     if (aRes->isConcealed())
 244       aFeatureStr.append("[concealed]");
 245     if (ModelAPI_Tools::hasSubResults(aRes))
 246       aFeatureStr.append("[hasSubResults]");
 247
 248     aFeature = ModelAPI_Feature::feature(aRes);
 249   }
 250   else
 251     aFeatureStr.append(aPtrStr.str().c_str());
 252
 253   if (aFeature.get()) {
 254     aFeatureStr.append(QString(": %1").arg(aFeature->getKind().c_str()).toStdString().c_str());
 255     if (aFeature->data()->isValid()) {
 256       aFeatureStr.append(QString(", name=%1").arg(aFeature->data()->name().c_str()).toStdString()
 257                                                                                        .c_str());
 258     }
 259     if (isUseAttributesInfo) {
 260       std::list<AttributePtr> anAttrs = aFeature->data()->attributes("");
 261       std::list<AttributePtr>::const_iterator anIt = anAttrs.begin(), aLast = anAttrs.end();
 262       QStringList aValues;
 263       for(; anIt != aLast; anIt++) {
 264         AttributePtr anAttr = *anIt;
 265         QString aValue = "not defined";
 266         std::string aType = anAttr->attributeType();
 267         if (aType == GeomDataAPI_Point2D::typeId()) {
 268           std::shared_ptr<GeomDataAPI_Point2D> aPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 269                                                                                          anAttr);
 270           if (aPoint.get())
 271             aValue = QString("(%1, %2)").arg(aPoint->x()).arg(aPoint->y());
 272         }
 273         else if (aType == ModelAPI_AttributeRefAttr::typeId()) {
 274         }
 275
 276         aValues.push_back(QString("%1: %2").arg(anAttr->id().c_str()).arg(aValue).toStdString().c_str());
 277       }
 278       if (!aValues.empty())
 279         aFeatureStr.append(QString(", attributes: %1").arg(aValues.join(", ").toStdString().c_str()));
 280     }
 281   }
 282
 283   return aFeatureStr;
 284 }
 285
 286 typedef QMap<QString, TopAbs_ShapeEnum> ShapeTypes;
 287 static ShapeTypes MyShapeTypes;
 288
 289 TopAbs_ShapeEnum shapeType(const QString& theType)
 290 {
 291   if (MyShapeTypes.count() == 0) {
 292     MyShapeTypes["face"] = TopAbs_FACE;
 293     MyShapeTypes["faces"] = TopAbs_FACE;
 294     MyShapeTypes["vertex"] = TopAbs_VERTEX;
 295     MyShapeTypes["vertices"] = TopAbs_VERTEX;
 296     MyShapeTypes["wire"] = TopAbs_WIRE;
 297     MyShapeTypes["edge"] = TopAbs_EDGE;
 298     MyShapeTypes["edges"] = TopAbs_EDGE;
 299     MyShapeTypes["shell"] = TopAbs_SHELL;
 300     MyShapeTypes["solid"] = TopAbs_SOLID;
 301     MyShapeTypes["solids"] = TopAbs_SOLID;
 302     MyShapeTypes["objects"] = TopAbs_SHAPE;
 303   }
 304   QString aType = theType.toLower();
 305   if (MyShapeTypes.contains(aType))
 306     return MyShapeTypes[aType];
 307   Events_Error::send("Shape type defined in XML is not implemented!");
 308   return TopAbs_SHAPE;
 309 }
 310
 311 void checkObjects(const QObjectPtrList& theObjects, bool& hasResult, bool& hasFeature,
 312                   bool& hasParameter, bool& hasCompositeOwner)
 313 {
 314   hasResult = false;
 315   hasFeature = false;
 316   hasParameter = false;
 317   hasCompositeOwner = false;
 318   foreach(ObjectPtr aObj, theObjects) {
 319     FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(aObj);
 320     ResultPtr aResult = std::dynamic_pointer_cast<ModelAPI_Result>(aObj);
 321     ResultParameterPtr aConstruction = std::dynamic_pointer_cast<ModelAPI_ResultParameter>(aResult);
 322
 323     hasResult |= (aResult.get() != NULL);
 324     hasFeature |= (aFeature.get() != NULL);
 325     hasParameter |= (aConstruction.get() != NULL);
 326     if (hasFeature)
 327       hasCompositeOwner |= (ModelAPI_Tools::compositeOwner(aFeature) != NULL);
 328     if (hasFeature && hasResult  && hasParameter && hasCompositeOwner)
 329       break;
 330   }
 331 }
 332
 333 void setDefaultDeviationCoefficient(const TopoDS_Shape& theShape,
 334                                     const Handle(Prs3d_Drawer)& theDrawer)
 335 {
 336   if (theShape.IsNull())
 337     return;
 338   TopAbs_ShapeEnum aType = theShape.ShapeType();
 339   if ((aType == TopAbs_EDGE) || (aType == TopAbs_WIRE))
 340     theDrawer->SetDeviationCoefficient(1.e-4);
 341 }
 342
 343 Quantity_Color color(const std::string& theSection,
 344                      const std::string& theName,
 345                      const std::string& theDefault)
 346 {
 347   std::vector<int> aColor = Config_PropManager::color(theSection, theName, theDefault);
 348   return Quantity_Color(aColor[0] / 255., aColor[1] / 255., aColor[2] / 255., Quantity_TOC_RGB);
 349 }
 350
 351 ObjectPtr getObject(const AttributePtr& theAttribute)
 352 {
 353   ObjectPtr anObject;
 354   std::string anAttrType = theAttribute->attributeType();
 355   if (anAttrType == ModelAPI_AttributeRefAttr::typeId()) {
 356     AttributeRefAttrPtr anAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
 357     if (anAttr != NULL && anAttr->isObject())
 358       anObject = anAttr->object();
 359   }
 360   if (anAttrType == ModelAPI_AttributeSelection::typeId()) {
 361     AttributeSelectionPtr anAttr = std::dynamic_pointer_cast<ModelAPI_AttributeSelection>(theAttribute);
 362     if (anAttr != NULL)
 363       anObject = anAttr->context();
 364   }
 365   if (anAttrType == ModelAPI_AttributeReference::typeId()) {
 366     AttributeReferencePtr anAttr = std::dynamic_pointer_cast<ModelAPI_AttributeReference>(theAttribute);
 367     if (anAttr.get() != NULL)
 368       anObject = anAttr->value();
 369   }
 370   return anObject;
 371 }
 372
 373 TopAbs_ShapeEnum getCompoundSubType(const TopoDS_Shape& theShape)
 374 {
 375   TopAbs_ShapeEnum aShapeType = theShape.ShapeType();
 376
 377   // for compounds check sub-shapes: it may be compound of needed type:
 378   // Booleans may produce compounds of Solids
 379   if (aShapeType == TopAbs_COMPOUND) {
 380     for(TopoDS_Iterator aSubs(theShape); aSubs.More(); aSubs.Next()) {
 381       if (!aSubs.Value().IsNull()) {
 382         TopAbs_ShapeEnum aSubType = aSubs.Value().ShapeType();
 383         if (aSubType == TopAbs_COMPOUND) { // compound of compound(s)
 384           aShapeType = TopAbs_COMPOUND;
 385           break;
 386         }
 387         if (aShapeType == TopAbs_COMPOUND) {
 388           aShapeType = aSubType;
 389         } else if (aShapeType != aSubType) { // compound of shapes of different types
 390           aShapeType = TopAbs_COMPOUND;
 391           break;
 392         }
 393       }
 394     }
 395   }
 396   return aShapeType;
 397 }
 398
 399 void getParameters(QStringList& theParameters)
 400 {
 401   theParameters.clear();
 402
 403   SessionPtr aSession = ModelAPI_Session::get();
 404   std::list<DocumentPtr> aDocList;
 405   DocumentPtr anActiveDocument = aSession->activeDocument();
 406   DocumentPtr aRootDocument = aSession->moduleDocument();
 407   aDocList.push_back(anActiveDocument);
 408   if (anActiveDocument != aRootDocument) {
 409     aDocList.push_back(aRootDocument);
 410   }
 411   std::string aGroupId = ModelAPI_ResultParameter::group();
 412   for(std::list<DocumentPtr>::const_iterator it = aDocList.begin(); it != aDocList.end(); ++it) {
 413     DocumentPtr aDocument = *it;
 414     int aSize = aDocument->size(aGroupId);
 415     for (int i = 0; i < aSize; i++) {
 416       ObjectPtr anObject = aDocument->object(aGroupId, i);
 417       std::string aParameterName = anObject->data()->name();
 418       theParameters.append(aParameterName.c_str());
 419     }
 420   }
 421 }
 422
 423 std::string findGreedAttribute(ModuleBase_IWorkshop* theWorkshop, const FeaturePtr& theFeature)
 424 {
 425   std::string anAttributeId;
 426
 427   std::string aXmlCfg, aDescription;
 428   theWorkshop->module()->getXMLRepresentation(theFeature->getKind(), aXmlCfg, aDescription);
 429
 430   ModuleBase_WidgetFactory aFactory(aXmlCfg, theWorkshop);
 431   std::string anAttributeTitle;
 432   aFactory.getGreedAttribute(anAttributeId);
 433
 434   return anAttributeId;
 435 }
 436
 437 void setObject(const AttributePtr& theAttribute, const ObjectPtr& theObject,
 438                const GeomShapePtr& theShape, ModuleBase_IWorkshop* theWorkshop,
 439                const bool theTemporarily)
 440 {
 441   if (!theAttribute.get())
 442     return;
 443
 444   std::string aType = theAttribute->attributeType();
 445   if (aType == ModelAPI_AttributeReference::typeId()) {
 446     AttributeReferencePtr aRef = std::dynamic_pointer_cast<ModelAPI_AttributeReference>(theAttribute);
 447     ObjectPtr aObject = aRef->value();
 448     if (!(aObject && aObject->isSame(theObject))) {
 449       aRef->setValue(theObject);
 450     }
 451   } else if (aType == ModelAPI_AttributeRefAttr::typeId()) {
 452     AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
 453
 454     AttributePtr anAttribute = theWorkshop->module()->findAttribute(theObject, theShape);
 455     if (anAttribute.get())
 456       aRefAttr->setAttr(anAttribute);
 457     else {
 458       ObjectPtr aObject = aRefAttr->object();
 459       if (!(aObject && aObject->isSame(theObject))) {
 460         aRefAttr->setObject(theObject);
 461       }
 462     }
 463   } else if (aType == ModelAPI_AttributeSelection::typeId()) {
 464     AttributeSelectionPtr aSelectAttr =
 465                              std::dynamic_pointer_cast<ModelAPI_AttributeSelection>(theAttribute);
 466     ResultPtr aResult = std::dynamic_pointer_cast<ModelAPI_Result>(theObject);
 467     if (aSelectAttr.get() != NULL) {
 468       aSelectAttr->setValue(aResult, theShape, theTemporarily);
 469     }
 470   }
 471   if (aType == ModelAPI_AttributeSelectionList::typeId()) {
 472     AttributeSelectionListPtr aSelectionListAttr =
 473                          std::dynamic_pointer_cast<ModelAPI_AttributeSelectionList>(theAttribute);
 474     ResultPtr aResult = std::dynamic_pointer_cast<ModelAPI_Result>(theObject);
 475     if (!aSelectionListAttr->isInList(aResult, theShape, theTemporarily))
 476       aSelectionListAttr->append(aResult, theShape, theTemporarily);
 477   }
 478   else if (aType == ModelAPI_AttributeRefList::typeId()) {
 479     AttributeRefListPtr aRefListAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefList>(theAttribute);
 480     if (!aRefListAttr->isInList(theObject))
 481       aRefListAttr->append(theObject);
 482   }
 483   else if (aType == ModelAPI_AttributeRefAttrList::typeId()) {
 484     AttributeRefAttrListPtr aRefAttrListAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttrList>(theAttribute);
 485     AttributePtr anAttribute = theWorkshop->module()->findAttribute(theObject, theShape);
 486
 487     if (anAttribute.get()) {
 488       if (!aRefAttrListAttr->isInList(anAttribute))
 489         aRefAttrListAttr->append(anAttribute);
 490     }
 491     else {
 492       if (!aRefAttrListAttr->isInList(theObject))
 493         aRefAttrListAttr->append(theObject);
 494     }
 495   }
 496 }
 497
 498 GeomShapePtr getShape(const AttributePtr& theAttribute, ModuleBase_IWorkshop* theWorkshop)
 499 {
 500   GeomShapePtr aShape;
 501   if (!theAttribute.get())
 502     return aShape;
 503
 504   std::string aType = theAttribute->attributeType();
 505   if (aType == ModelAPI_AttributeReference::typeId()) {
 506   } else if (aType == ModelAPI_AttributeRefAttr::typeId()) {
 507     AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theAttribute);
 508     if (aRefAttr.get() && !aRefAttr->isObject()) {
 509       AttributePtr anAttribute = aRefAttr->attr();
 510       aShape = theWorkshop->module()->findShape(anAttribute);
 511     }
 512   } else if (aType == ModelAPI_AttributeSelection::typeId()) {
 513     AttributeSelectionPtr aSelectAttr = std::dynamic_pointer_cast<ModelAPI_AttributeSelection>
 514                                                                                  (theAttribute);
 515     aShape = aSelectAttr->value();
 516   }
 517   return aShape;
 518 }
 519
 520 void flushUpdated(ObjectPtr theObject)
 521 {
 522   blockUpdateViewer(true);
 523
 524   Events_Loop::loop()->flush(Events_Loop::eventByName(EVENT_OBJECT_UPDATED));
 525
 526   blockUpdateViewer(false);
 527 }
 528
 529 void blockUpdateViewer(const bool theValue)
 530 {
 531   // the viewer update should be blocked in order to avoid the temporary feature content
 532   // when the solver processes the feature, the redisplay message can be flushed
 533   // what caused the display in the viewer preliminary states of object
 534   // e.g. fillet feature, angle value change
 535   std::shared_ptr<Events_Message> aMsg;
 536   if (theValue) {
 537     aMsg = std::shared_ptr<Events_Message>(
 538         new Events_Message(Events_Loop::eventByName(EVENT_UPDATE_VIEWER_BLOCKED)));
 539   }
 540   else {
 541     // the viewer update should be unblocked
 542     aMsg = std::shared_ptr<Events_Message>(
 543         new Events_Message(Events_Loop::eventByName(EVENT_UPDATE_VIEWER_UNBLOCKED)));
 544   }
 545   Events_Loop::loop()->send(aMsg);
 546 }
 547
 548 QString wrapTextByWords(const QString& theValue, QWidget* theWidget,
 549                                           int theMaxLineInPixels)
 550 {
 551   static QFontMetrics tfm(theWidget ? theWidget->font() : QApplication::font());
 552   static qreal phi = 2.618;
 553
 554   QRect aBounds = tfm.boundingRect(theValue);
 555   if(aBounds.width() <= theMaxLineInPixels)
 556     return theValue;
 557
 558   qreal s = aBounds.width() * aBounds.height();
 559   qreal aGoldWidth = sqrt(s*phi);
 560
 561   QStringList aWords = theValue.split(" ", QString::SkipEmptyParts);
 562   QStringList aLines;
 563   int n = aWords.count();
 564   QString aLine;
 565   for (int i = 0; i < n; i++) {
 566     QString aLineExt = aLine + " " + aWords[i];
 567     qreal anWidthNonExt = tfm.boundingRect(aLine).width();
 568     qreal anWidthExt = tfm.boundingRect(aLineExt).width();
 569     qreal aDeltaNonExt = fabs(anWidthNonExt-aGoldWidth);
 570     qreal aDeltaExt    = fabs(anWidthExt-aGoldWidth);
 571     if(aDeltaNonExt < aDeltaExt) {
 572       // new line
 573       aLines.append(aLine);
 574       aLine = aWords[i];
 575     }
 576     else
 577       aLine = aLineExt;
 578   }
 579
 580   if(!aLine.isEmpty())
 581     aLines.append(aLine);
 582
 583   QString aResult = aLines.join("\n");
 584   return aResult;
 585 }
 586
 587 } // namespace ModuleBase_Tools
 588
 589