{"type":"doc","content":[{"type":"paragraph","content":[{"text":"The ","type":"text"},{"text":"DWG Expert","type":"text","marks":[{"type":"strong"}]},{"text":" addresses the possibilities to customize the core features especially in the ways to introduce more powerful tools to the UI part of the application.","type":"text"}]},{"type":"paragraph"},{"type":"mediaSingle","attrs":{"layout":"center"},"content":[{"type":"media","attrs":{"width":1536,"id":"95ad7210-ee23-4353-a5a0-757bff070261","collection":"contentId-2838003760","type":"file","height":1152}}]},{"type":"paragraph"},{"type":"paragraph","content":[{"text":"Features","type":"text"}]},{"type":"bulletList","content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"List blocks from external sources ","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Insert blocks from external sources","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Create a custom UI for command prompts","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Access entity properties","type":"text"}]}]}]},{"type":"paragraph"},{"type":"paragraph","content":[{"text":"DWG Expert - List blocks from external sources ","type":"text","marks":[{"type":"underline"}]},{"type":"status","attrs":{"color":"neutral","style":"bold","text":"OBJ-C","localId":"d5ca1fec-06c9-4f2b-b22d-995b7bb8a237"}},{"text":" ","type":"text"},{"type":"status","attrs":{"color":"yellow","style":"bold","text":"C++","localId":"de4bb24b-33ca-42e1-915b-40f7c6589a6a"}}]},{"type":"paragraph","content":[{"text":"To accomplish a feature like a block library the ","type":"text"},{"text":"DWG Expert","type":"text","marks":[{"type":"strong"}]},{"text":" introduces a simple block container. The block container is a ","type":"text"},{"text":"NSMutableArray ","type":"text","marks":[{"type":"strong"}]},{"text":"that stores the block definition name and a corresponding thumbnail. The block container is created and initialized with all blocks from the assets calling","type":"text"},{"text":" -(void)BuildBlockLibrary","type":"text","marks":[{"type":"strong"}]},{"text":" when ","type":"text"},{"text":"CFxARESDelegate ","type":"text","marks":[{"type":"strong"}]},{"text":"triggers ","type":"text"},{"text":"onInitializationDone()","type":"text","marks":[{"type":"strong"}]},{"text":". The method ","type":"text"},{"text":"onInitializationDone()","type":"text","marks":[{"type":"strong"}]},{"text":" is called only once each application session. The block container uses ","type":"text"},{"text":"-(UIImage*)getDrawingThumbnail:(NSString*)drawing","type":"text","marks":[{"type":"strong"}]},{"text":" from singleton ","type":"text"},{"text":"CFxARESInstance","type":"text","marks":[{"type":"strong"}]},{"text":" to create a block preview. ","type":"text"}]},{"type":"paragraph"},{"type":"paragraph","content":[{"text":"File: CFxAresDelegate.mm","type":"text"}]},{"type":"codeBlock","content":[{"text":"-(void)onInitializationDone\n{\n ... \n [_application BuildBlockLibrary];\n}","type":"text"}]},{"type":"paragraph"},{"type":"paragraph","content":[{"text":"File: AppDelegate.m","type":"text"}]},{"type":"codeBlock","content":[{"text":"@interface AppDelegate ()\n{\n ...\n NSMutableArray* m_BlockLibrary;\n}\n\n-(void)BuildBlockLibrary\n{\n // Prepare block library.\n NSString *bundlePath = [[aresDelegate resourceBundle] bundlePath];\n NSString *dwgSamplesPath = [bundlePath stringByAppendingString:@\"/Support/Samples/Blocks\"];\n NSArray *filePaths = [NSBundle pathsForResourcesOfType:@\"dwg\" inDirectory:dwgSamplesPath];\n\n m_BlockLibrary = [NSMutableArray array];\n for ( NSString* drawing in filePaths )\n {\n BlockDefinition* block = [[BlockDefinition alloc] init];\n \n block._blockFilePath = drawing;\n block._blockName = [drawing lastPathComponent];\n block._icon = [[CFxARESInstance instance] getDrawingThumbnail:drawing];\n \n [m_BlockLibrary addObject:block];\n }\n}","type":"text"}]},{"type":"paragraph"},{"type":"paragraph","content":[{"text":"DWG Expert - Insert blocks from external sources ","type":"text","marks":[{"type":"underline"}]},{"type":"status","attrs":{"color":"neutral","style":"bold","text":"OBJ-C","localId":"0200d6d1-5bd9-45ac-b1d1-1a017c612abb"}},{"text":" ","type":"text"},{"type":"status","attrs":{"color":"yellow","style":"bold","text":"C++","localId":"4036770d-487a-4194-aa80-03df202618a5"}}]},{"type":"paragraph","content":[{"text":"The ","type":"text"},{"text":"DWG Expert","type":"text","marks":[{"type":"strong"}]},{"text":" uses another class ","type":"text"},{"text":"BlocksDelegate.m","type":"text","marks":[{"type":"strong"}]},{"text":" to construct a widget that can be used to show all available blocks. The widget is a common OBJ-C class, the ","type":"text"},{"text":"NSObject","type":"text","marks":[{"type":"strong"}]},{"text":". The block library view processes all data from the block library the block name and the thumbnail. The block delegate is created and initialized in the ","type":"text"},{"text":"ViewController.m","type":"text","marks":[{"type":"strong"}]},{"text":", the table view is part of the ","type":"text"},{"text":"ViewController ","type":"text","marks":[{"type":"strong"}]},{"text":"and shows up accordingly. The final user action will happen on ","type":"text"},{"text":"-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath ","type":"text","marks":[{"type":"strong"}]},{"text":"whenever a table cell is tapped","type":"text"},{"text":". ","type":"text","marks":[{"type":"strong"}]},{"text":"When the table cell is triggered the block insertion is initiated with a command sequence","type":"text"},{"text":" ","type":"text","marks":[{"type":"strong"}]},{"text":"using ","type":"text"},{"text":"-(void)runCommand:(NSString*)command.","type":"text","marks":[{"type":"strong"}]}]},{"type":"paragraph"},{"type":"paragraph","content":[{"text":"File: ViewController.m","type":"text"}]},{"type":"codeBlock","content":[{"text":"- (void)viewDidLoad\n{\n ...\n blockDelegate = [[BlocksDelegate alloc] init];\n\n UINib* blockItem = [UINib nibWithNibName:@\"blockview\" bundle:nil];\n [m_Blocks registerNib:blockItem forCellReuseIdentifier:@\"block\"];\n \n m_Blocks.dataSource = blockDelegate;\n m_Blocks.delegate = blockDelegate;\n\n AppDelegate* appDelegate = (AppDelegate*)[UIApplication sharedApplication].delegate;\n [blockDelegate SetBlocks:[appDelegate GetBlockDefinitions]];\n [m_Blocks reloadData];\n ...\n}","type":"text"}]},{"type":"paragraph"},{"type":"paragraph","content":[{"text":"File: BlocksDelegate.m","type":"text"}]},{"type":"codeBlock","content":[{"text":"- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath\n{\n BlockDefinition* blockDef = [m_Blocks objectAtIndex:indexPath.row];\n \n NSString* command = @\"_-INSERTBLOCK\\n\\\"\";\n command = [command stringByAppendingString:blockDef._blockFilePath];\n command = [command stringByAppendingString:@\"\\\"\\n\\\\1.0\\n1.0\\n0.0\\n\"];\n \n [[CFxARESInstance instance] runCommand:command];\n \n [tableView deselectRowAtIndexPath:indexPath animated:NO];\n}","type":"text"}]},{"type":"paragraph"},{"type":"paragraph","content":[{"text":"DWG Expert - Create a custom UI for command prompts ","type":"text","marks":[{"type":"underline"}]},{"type":"status","attrs":{"color":"neutral","style":"bold","text":"OBJ-C","localId":"171f7b1f-608d-4176-acfb-35d0e48b8851"}},{"type":"hardBreak"},{"text":"Coming soon.","type":"text"},{"type":"hardBreak"}]},{"type":"paragraph","content":[{"text":"DWG Expert - Access entity properties ","type":"text","marks":[{"type":"underline"}]},{"type":"status","attrs":{"color":"neutral","style":"bold","text":"OBJ-C","localId":"7467f3e6-465e-4894-a64d-22f46fe366f6"}},{"text":" ","type":"text"},{"type":"status","attrs":{"color":"yellow","style":"bold","text":"C++","localId":"7b2f86e6-1440-4640-b61d-e609c7505da2"}}]},{"type":"paragraph","content":[{"text":"It may be necessary to run certain actions whenever an entity is selected. The ","type":"text"},{"text":"CFxARESInstanceDelegate","type":"text","marks":[{"type":"strong"}]},{"text":" provides a method that informs the host application a selection has changed. The method","type":"text"},{"text":" -(void)mainSelectionSetChanged:(BOOL)isEmpty commonObjectClass:(NSString*)dxfClassName;","type":"text","marks":[{"type":"strong"}]},{"text":" calls a native method ","type":"text"},{"text":"-(NSArray*)GetProperties ","type":"text","marks":[{"type":"strong"}]},{"text":"from ","type":"text"},{"text":"CFxNativeConnection","type":"text","marks":[{"type":"strong"}]},{"text":" to retrieve more information about the entities selected. The DWG Expert uses a simple ","type":"text"},{"text":"UIAlertController ","type":"text","marks":[{"type":"strong"}]},{"text":"to display the necessary entity properties. The Obj-C implementation of ","type":"text"},{"text":"-(void)DisplayProperties:(NSArray*)properties","type":"text","marks":[{"type":"strong"}]},{"text":" is part of ","type":"text"},{"text":"ViewController.m","type":"text","marks":[{"type":"strong"}]},{"text":". ","type":"text"},{"text":"DisplayProperties ","type":"text","marks":[{"type":"strong"}]},{"text":"must be executed from the UI thread. A suitable method ","type":"text"},{"text":"+(void)runOnUiThread:(dispatch_block_t)block","type":"text","marks":[{"type":"strong"}]},{"text":" is provided by ","type":"text"},{"text":"[CFxARESInstance].","type":"text","marks":[{"type":"strong"}]}]},{"type":"paragraph"},{"type":"mediaSingle","attrs":{"layout":"center"},"content":[{"type":"media","attrs":{"width":1536,"id":"7f229366-8300-46db-80bd-645432a26199","collection":"contentId-2838003760","type":"file","height":1152}}]},{"type":"paragraph"},{"type":"paragraph","content":[{"text":"File: ViewController.m","type":"text"}]},{"type":"codeBlock","content":[{"text":"-(void)DisplayProperties:(NSArray*)properties\n{\n NSString *htmlString = @\" \\\n \";\n for (NSString* prop in properties) {\n NSString* key = [[prop componentsSeparatedByString:@\",\"] objectAtIndex:0];\n NSString* value = [[prop componentsSeparatedByString:@\",\"] objectAtIndex:1];\n NSString* row = [NSString stringWithFormat:@\"\", key, value];\n htmlString = [htmlString stringByAppendingString:row];\n }\n htmlString = [htmlString stringByAppendingString:@\"

\"];\n UIAlertController *alert = [UIAlertController alertControllerWithTitle:nil\n message:nil\n preferredStyle:UIAlertControllerStyleAlert];\n NSAttributedString *attributedStr = [[NSAttributedString alloc] initWithData:[htmlString dataUsingEncoding:NSUTF8StringEncoding]\n options:@{NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType,\n NSCharacterEncodingDocumentAttribute: @(NSUTF8StringEncoding)}\n documentAttributes:nil error:nil];\n NSAttributedString *attributedTitle = [[NSAttributedString alloc] initWithString:@\"Entity properties\" attributes:@{NSFontAttributeName : [UIFont boldSystemFontOfSize:17], NSForegroundColorAttributeName :[UIColor blackColor]}];\n UIAlertAction *defaultAction = [UIAlertAction actionWithTitle:@\"OK\" style:UIAlertActionStyleDefault handler:^(UIAlertAction * action) {\n // OK button tappped.\n [self dismissViewControllerAnimated:YES completion:^{ }];\n [[CFxARESInstance instance] emulateEscKeyPressed];\n }];\n [alert setValue:attributedStr forKey: @\"attributedMessage\"];\n [alert setValue:attributedTitle forKey:@\"attributedTitle\"];\n [alert addAction:defaultAction];\n \n UIView *firstSubview = alert.view.subviews.firstObject;\n UIView *alertContentView = firstSubview.subviews.firstObject;\n UIView *firstView = alertContentView.subviews.firstObject;\n firstView.backgroundColor = [UIColor whiteColor];\n \n [self presentViewController:alert animated:true completion:nil];\n}","type":"text"}]},{"type":"paragraph","content":[{"type":"hardBreak"},{"text":"File: CFxAresDelegate.m","type":"text"}]},{"type":"codeBlock","content":[{"text":"-(void)mainSelectionSetChanged:(BOOL)isEmpty commonObjectClass:(NSString*)dxfClassName\n{\n // User selected enitities, lets show/hide UI for working with selection.\n NSArray* properties = [[CFxNativeConnection GetNativeConnection] GetProperties];\n if (properties != nil && properties.count > 0)\n {\n [CFxARESInstance runOnUiThread:^\n {\n [[self getMainView] DisplayProperties:properties];\n }];\n }\n}","type":"text"}]},{"type":"paragraph"},{"type":"paragraph","content":[{"text":"File: CFxNativeConnection.mm","type":"text"}]},{"type":"codeBlock","content":[{"text":"std::vector< std::pair> GetEntityProperties( OdDbEntityPtr pEntity )\n{\n std::vector< std::pair> properties;\n\n OdCmColor cmColor = pEntity->color();\n properties.push_back( std::make_pair( L\"Color\", cmColor.colorNameForDisplay() ));\n\n OdDbObjectId idLayer = pEntity->layerId();\n OdDbLayerTableRecordPtr pLayer = idLayer.openObject();\n properties.push_back( std::make_pair( L\"Layer\", pLayer->getName() ));\n\n OdDbObjectId idLinetype = pEntity->linetypeId();\n OdDbLinetypeTableRecordPtr pLinetype = idLinetype.openObject();\n properties.push_back( std::make_pair( L\"Linetype\", pLinetype->getName() ));\n\n double linetypeScale = pEntity->linetypeScale();\n CFxDatabasePtr pDB = pEntity->database();\n CFxString sLinetypeScale;\n if ( pDB->GetUnitsFormatter()->RealToString( sLinetypeScale, linetypeScale ) == RTNORM )\n properties.push_back( std::make_pair( L\"LinetypeScale\", sLinetypeScale.wide_strU() ));\n\n OdString sLineWeight;\n OdDb::LineWeight entityLineweight = pEntity->lineWeight();\n if( entityLineweight == OdDb::kLnWtByLayer )\n sLineWeight = L\"ByLayer\";\n else if( entityLineweight == OdDb::kLnWtByBlock )\n sLineWeight = \"ByBlock\";\n else if( entityLineweight == OdDb::kLnWtByLwDefault )\n sLineWeight = L\"Default\";\n else\n {\n int value = static_cast( entityLineweight );\n double newValue;\n newValue = value / 100.0;\n\n sLineWeight.format( L\"%2f mm\", newValue );\n }\n properties.push_back( std::make_pair( L\"Lineweight\", sLineWeight ) );\n\n // Read Block Properties\n if( pEntity->isKindOf( OdDbBlockReference::desc() ) )\n {\n OdDbBlockReferencePtr pBlock = OdDbBlockReference::cast( pEntity );\n OdGePoint3d pt = pBlock->position();\n double dAngle = pBlock->rotation();\n OdGeScale3d scale = pBlock->scaleFactors();\n\n OdDbBlockTableRecordPtr pRecord = pBlock->blockTableRecord().openObject( OdDb::kForRead );\n OdString strBlockName;\n if( !pRecord.isNull() )\n strBlockName = pRecord->getName();\n\n properties.push_back( std::make_pair( L\"Position X\" , OdString().format(L\"%f\",pt.x ) ) );\n properties.push_back( std::make_pair( L\"Position Y\" , OdString().format(L\"%f\",pt.y ) ) );\n properties.push_back( std::make_pair( L\"Position Z\" , OdString().format(L\"%f\",pt.z ) ) );\n\n properties.push_back( std::make_pair( L\"Scale X\" , OdString().format(L\"%f\",scale.sx ) ) );\n properties.push_back( std::make_pair( L\"Scale Y\" , OdString().format(L\"%f\",scale.sy ) ) );\n properties.push_back( std::make_pair( L\"Scale Z\" , OdString().format(L\"%f\",scale.sz ) ) );\n\n properties.push_back( std::make_pair( L\"Rotation\" , OdString().format(L\"%f\", dAngle ) ) );\n properties.push_back( std::make_pair( L\"Name\" , strBlockName ) );\n }\n\n return properties;\n}","type":"text"}]}],"version":1}

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