dwg/dxf import: fix angle and alignment handing of (m)texts

Author: jef-n

external/libdxfrw/drw_entities.cpp

@@ -1606,7 +1606,7 @@ void DRW_Text::parseCode( int code, dxfReader *reader )
       angle = reader->getDouble() / ARAD;
       break;
     case 51:
-      oblique = reader->getDouble();
+      oblique = reader->getDouble() / ARAD;
       break;
     case 71:
       textgen = reader->getInt32();
@@ -1803,6 +1803,7 @@ bool DRW_MText::parseDwg( DRW::Version version, dwgBuffer *buf, duint32 bs )
 
   extPoint = buf->get3BitDouble(); /* Extrusion 3BD 210 Undocumented; */
   secPoint = buf->get3BitDouble(); /* X-axis dir 3BD 11 */
+  haveXAxis = true;
   updateAngle();
   widthscale = buf->getBitDouble(); /* Rect width BD 41 */
   if ( version > DRW::AC1018 )  //2007+
@@ -2192,7 +2193,7 @@ void DRW_Hatch::parseCode( int code, dxfReader *reader )
       else if ( ellipse ) ellipse->endparam = reader->getDouble() / ARAD;
       break;
     case 52:
-      angle = reader->getDouble();
+      angle = reader->getDouble() / ARAD;
       break;
     case 73:
       if ( arc ) arc->isccw = reader->getInt32();
@@ -2959,10 +2960,10 @@ void DRW_Dimension::parseCode( int code, dxfReader *reader )
       rot = reader->getDouble();
       break;
     case 50:
-      angle = reader->getDouble();
+      angle = reader->getDouble() / ARAD;
       break;
     case 52:
-      oblique = reader->getDouble();
+      oblique = reader->getDouble() / ARAD;
       break;
     case 40:
       length = reader->getDouble();

external/libdxfrw/intern/dxfreader.cpp

@@ -282,27 +282,15 @@ bool dxfReaderAscii::readInt64()
 
 bool dxfReaderAscii::readDouble()
 {
+  bool ok = false;
   type = DOUBLE;
   std::string text;
   if ( readString( &text ) )
   {
-#if defined(__APPLE__)
-    int succeeded = sscanf( & ( text[0] ), "%lg", &doubleData );
-    if ( succeeded != 1 )
-    {
-      QgsDebugMsg( QString( "reading double error:%1" ).arg( text.c_str() ) );
-    }
-#else
-    std::istringstream sd( text );
-    sd >> doubleData;
+    doubleData = QString::fromStdString( text ).toDouble( &ok );
     QgsDebugMsg( QString( "%1" ).arg( doubleData ) );
-#endif
-    return true;
-  }
-  else
-  {
-    return false;
   }
+  return ok;
 }
 
 //saved as int or add a bool member??

src/app/dwg/qgsdwgimportdialog.cpp

@@ -360,40 +360,67 @@ void QgsDwgImportDialog::createGroup( QgsLayerTreeGroup *group, const QString &n
     pls.dataDefinedProperties().setProperty( QgsPalLayerSettings::MultiLineHeight, QgsProperty::fromExpression( QStringLiteral( "CASE WHEN interlin<0 THEN 1 ELSE interlin*1.5 END" ) ) );
     pls.dataDefinedProperties().setProperty( QgsPalLayerSettings::PositionX, QgsProperty::fromExpression( QStringLiteral( "$x" ) ) );
     pls.dataDefinedProperties().setProperty( QgsPalLayerSettings::PositionY, QgsProperty::fromExpression( QStringLiteral( "$y" ) ) );
-    pls.dataDefinedProperties().setProperty( QgsPalLayerSettings::Hali, QgsProperty::fromExpression( QStringLiteral( "CASE"
-        " WHEN etype=%1 THEN"
-        " CASE"
-        " WHEN alignv IN (1,4,7) THEN 'Left'"
-        " WHEN alignv IN (2,5,6) THEN 'Center'"
-        " ELSE 'Right'"
-        " END"
-        " ELSE"
-        "  CASE"
-        " WHEN alignh=0 THEN 'Left'"
-        " WHEN alignh=1 THEN 'Center'"
-        " WHEN alignh=2 THEN 'Right'"
-        " WHEN alignh=3 THEN 'Left'"
-        " WHEN alignh=4 THEN 'Left'"
-        " END "
-        " END" ).arg( DRW::MTEXT ) ) );
-    pls.dataDefinedProperties().setProperty( QgsPalLayerSettings::Vali, QgsProperty::fromExpression( QStringLiteral( "CASE"
-        " WHEN etype=%1 THEN"
-        " CASE"
-        " WHEN alignv < 4 THEN 'Top'"
-        " WHEN alignv < 7 THEN 'Half'"
-        " ELSE 'Bottom'"
-        " END"
-        " ELSE"
-        " CASE"
-        " WHEN alignv=0 THEN 'Base'"
-        " WHEN alignv=1 THEN 'Bottom'"
-        " WHEN alignv=2 THEN 'Half'"
-        " WHEN alignv=3 THEN 'Top'"
-        " END"
-        " END" ).arg( DRW::MTEXT ) ) );
-    pls.dataDefinedProperties().setProperty( QgsPalLayerSettings::LabelRotation, QgsProperty::fromExpression( QStringLiteral( "360-angle*180.0/pi()" ) ) );
-
-    pls.placement = QgsPalLayerSettings::OrderedPositionsAroundPoint;
+
+    // DXF TEXT
+    // vertical: 0 = Base, 1 = Bottom, 2 = Middle, 3 = Top,  default Base
+    // horizontal: 0 = Left, 1 = Center, 2 = Right, 3 = Aligned (if Base), 4 = Middle (if Base), default Left
+
+    // DXF MTEXT
+    // 1 = Top left;    2 = Top center;    3 = Top right
+    // 4 = Middle left; 5 = Middle center; 6 = Middle right
+    // 7 = Bottom left; 8 = Bottom center; 9 = Bottom right
+
+    // QGIS Quadrant
+    // 0 QuadrantAboveLeft, 1 QuadrantAbove, 2 QuadrantAboveRight,
+    // 3 QuadrantLeft,      4 QuadrantOver,  5 QuadrantRight,
+    // 6 QuadrantBelowLeft, 7 QuadrantBelow, 8 QuadrantBelowRight,
+
+    pls.dataDefinedProperties().setProperty(
+      QgsPalLayerSettings::Hali,
+      QgsProperty::fromExpression( QStringLiteral(
+                                     "CASE"
+                                     " WHEN etype=%1 THEN"
+                                     " CASE"
+                                     " WHEN textgen % 3=2 THEN 'Center'"
+                                     " WHEN textgen % 3=0 THEN 'Right'"
+                                     " ELSE 'Left'"
+                                     " END"
+                                     " ELSE"
+                                     " CASE"
+                                     " WHEN alignh=1 THEN 'Center'"
+                                     " WHEN alignh=2 THEN 'Right'"
+                                     " ELSE 'Left'"
+                                     " END"
+                                     " END"
+                                   ).arg( DRW::MTEXT )
+                                 )
+    );
+
+    pls.dataDefinedProperties().setProperty(
+      QgsPalLayerSettings::Vali,
+      QgsProperty::fromExpression( QStringLiteral(
+                                     "CASE"
+                                     " WHEN etype=%1 THEN"
+                                     " CASE"
+                                     " WHEN textgen<4 THEN 'Top'"
+                                     " WHEN textgen<7 THEN 'Half'"
+                                     " ELSE 'Bottom'"
+                                     " END"
+                                     " ELSE"
+                                     " CASE"
+                                     " WHEN alignv=1 THEN 'Bottom'"
+                                     " WHEN alignv=2 THEN 'Half'"
+                                     " WHEN alignv=3 THEN 'Top'"
+                                     " ELSE 'Base'"
+                                     " END"
+                                     " END"
+                                   ).arg( DRW::MTEXT )
+                                 )
+    );
+
+    pls.dataDefinedProperties().setProperty( QgsPalLayerSettings::LabelRotation, QgsProperty::fromExpression( QStringLiteral( "360-angle" ) ) );
+    pls.dataDefinedProperties().setProperty( QgsPalLayerSettings::AlwaysShow, QgsProperty::fromExpression( QStringLiteral( "1" ) ) );
+
     l->setLabeling( new QgsVectorLayerSimpleLabeling( pls ) );
     l->setLabelsEnabled( true );
   }