-(NSString*) saveToLayerString:(LTAnnLayer*)layerformat:(LTAnnFormat)formatsavePageNumber:(int)savePageNumber;
layer
The AnnLayer to be saved. This value must not be null.
format
Must be AnnFormat.Annotations.
This method works the same way and produces the same annotation file format that AnnCodecs.SaveToString does, except it saves only the objects inside the individual layer specified instead of all the objects in the container.
Note that "load layer" functionality is not required by AnnCodecs. An AnnLayer cannot exist by itself without an annotation container, hence any of the load functions that accept a container parameter can be used to load the file saved by this function.
The SerializeOptions property can contain optional options and events that can be used when saving annotation data.
For more information, refer to Annotation Files.
using Leadtools.Annotations.Automation;using Leadtools.Annotations.Engine;using Leadtools.Annotations.Rendering;public void AnnCodecs_AnnCodecs(){// Create a new annotation container, 8.5 by 11 inchesAnnContainer container = new AnnContainer();// Size must be in annotation units (1/720 of an inch)container.Size = LeadSizeD.Create(8.5 * 720, 11 * 720);double inch = 720.0;// Add a red line object, from 1in 1in to 2in 2inAnnPolylineObject lineObj = new AnnPolylineObject();lineObj.Points.Add(LeadPointD.Create(1 * inch, 1 * inch));lineObj.Points.Add(LeadPointD.Create(2 * inch, 2 * inch));lineObj.Stroke = AnnStroke.Create(AnnSolidColorBrush.Create("Red"), LeadLengthD.Create(1));container.Children.Add(lineObj);// Add a blue on yellow rectangle from 3in 3in to 4in 4inAnnRectangleObject rectObj = new AnnRectangleObject();rectObj.Rect = LeadRectD.Create(3 * inch, 3 * inch, 1 * inch, 1 * inch);rectObj.Stroke = AnnStroke.Create(AnnSolidColorBrush.Create("Blue"), LeadLengthD.Create(1));rectObj.Fill = AnnSolidColorBrush.Create("Yellow");container.Children.Add(rectObj);// Show the containerShowContainer("Before save", container);// Create the codecs object to save and load annotationsAnnCodecs codecs = new AnnCodecs();// Save the containerstring destFileName = @"container.xml";codecs.Save(destFileName, container, AnnFormat.Annotations, 1);// delete the containercontainer = null;// Show information about the data we just savedAnnCodecsInfo info = codecs.GetInfo(destFileName);string message;if (info.Format == AnnFormat.Annotations){message = "Version: ";message += info.Version;message += " No. of pages: ";message += info.Pages.Length;message += " page nos: ";for (int i = 0; i < info.Pages.Length; i++){message += info.Pages[i] + " ";}}else{message = "Invalid annotations data";}Debug.WriteLine(message);// Show information about the XML data we just savedXmlDocument xmlDoc = new XmlDocument();xmlDoc.Load(destFileName);AnnCodecsInfo infoFromString = codecs.GetInfoFromString(xmlDoc.OuterXml);Debug.WriteLine($"====================");Debug.WriteLine($"Get Info From String");Debug.WriteLine($"Format: {infoFromString.Format}");Debug.WriteLine($"Version: {infoFromString.Version}");Debug.WriteLine($"Pages: {infoFromString.Pages.Length}");Debug.WriteLine($"====================");// Load the container we just savedcontainer = codecs.Load(destFileName, 1);// Show itShowContainer("After load", container);// delete the containercontainer = null;// Load the XML container just savedcontainer = codecs.LoadFromString(xmlDoc.OuterXml, 1);// Show itShowContainer("After load from string", container);// Save Active Layer using a Stream outputAnnLayer layer = AnnLayer.Create("MyLayer");container.ActiveLayer = layer;Stream stream = File.Create("StreamActiveLayer.xml");codecs.SaveLayer(stream, container.ActiveLayer, AnnFormat.Annotations, 1);// Save Active Layer using a File outputAnnLayer layer2 = AnnLayer.Create("MyLayer2");container.ActiveLayer = layer2;codecs.SaveLayer("StringActiveLayer.xml", layer2, AnnFormat.Annotations, 1);// Save Layer to stringAnnLayer layer4 = AnnLayer.Create("MyLayer4");string stringLayer = codecs.SaveLayerToString(layer4, AnnFormat.Annotations);Debug.WriteLine($"{stringLayer}");// Use SelectionObject, set ActiveLayer, Change Offset, Change PageNumber, and Save to stringAnnLayer layer5 = AnnLayer.Create("MyLayer5");AnnSelectionObject annSelectionObject = container.SelectionObject;annSelectionObject.IsSelected = true;container.ActiveLayer = layer5;container.Offset = new LeadPointD(10, 10);container.PageNumber = 3;string saveToString = codecs.SaveToString(container, AnnFormat.Annotations, 1);Debug.WriteLine($"{saveToString}");//Load from StringAnnContainer annContainer = codecs.LoadFromString(saveToString, 1);Debug.WriteLine($"{annContainer.PageNumber}");}private void ShowContainer(String message, AnnContainer container){string str = message + "\nContainer size: ";// Add the sizedouble inch = 720;double width = container.Size.Width / inch;double height = container.Size.Height / inch;str += width + " by " + height + " inches" + "\n";// Add the objectsstr += "Contains " + container.Children.Count + " objects(s)\n";for (int i = 0; i < container.Children.Count; i++){AnnObject annObj = container.Children[i];str += "Object: " + annObj.FriendlyName + " at ";for (int j = 0; j < annObj.Points.Count; j++){LeadPointD pt = annObj.Points[j];double x = pt.X / inch;double y = pt.Y / inch;str += "(" + x + ", " + y + ") ";}str += "\n";}Debug.WriteLine(str);}
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