AnnContainer Class

Summary

Represents an annotation container.

Syntax

Objective-C

C++

Java

public class AnnContainer

Public Class AnnContainer

@interface LTAnnContainer : NSObject<NSCopying>

public class AnnContainer

public: 
   ref class AnnContainer

Remarks

The annotation container is a rectangular area that holds related annotation objects (AnnObject). In typical applications, the container holds the annotation objects for a page in a document. The size of the container is the same as the page but in annotation units (1/720 of an inch).

AnnContainer contains the following members:

Member	Description
Size, Offset and PageNumber	Properties of the container: Size is the size of the container in annotation units (1/720 of an inch). Offset is an optional offset value (if the container does not start at 0,0) and PageNumber is the optional 1-based page number of the container
Mapper	The object responsible for converting display, container and image coordinates
Children	A collection of AnnObjects. These are the annotation objects that belong in this container. These objects will be rendered when the container is rendered and edited when the container is automated
SelectionObject	Special annotation object that is responsible for maintaining a list of the objects that are currently selected in the container
Layers	A collection of AnnLayers used to logically group common annotation objects.
HitTestPoint, HitTestRect and HitTestBehavior	Helper method used to perform hit-testing on the container and return any object under a test point or rectangle
IsVisible, Stroke and Fill	Optional values used when rendering this container: Whether it is visible and the border stroke and interior filling options
IsEnabled	Optional value indicating whether this container is enabled. If a container is disabled, then it will be used by the automation and considered read-only.
Labels	Optional labels that can be used to overlay fixed text on top of the container, such as map legends
Resize	Method to easily resize a container to a desired size. Has various options

Example

This example creates a new container, adds a line and a rectangle object to it, saves it and then loads it back.

using LeadtoolsExamples.Common; 
using Leadtools.Annotations.Automation; 
using Leadtools.Annotations.Engine; 
using Leadtools.Codecs; 
using Leadtools.Annotations.WinForms; 
 
public void AnnContainer_AnnContainer() 
{ 
   double inch = 720.0; 
 
   // Create a new annotation container, 8.5 by 11 inches 
   AnnContainer container = new AnnContainer(); 
   // Size must be in annotation units (1/720 of an inch) 
   container.Size = LeadSizeD.Create(8.5 * inch, 11 * inch); 
 
   // Add a red line object, from 1in 1in to 2in 2in 
   AnnPolylineObject 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 4in 
   AnnRectangleObject 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 container 
   ShowContainer("Before save", container); 
 
   // Create the codecs object to save and load annotations 
   AnnCodecs codecs = new AnnCodecs(); 
 
   // Save the container 
   string destFileName = @"container.xml"; 
   codecs.Save(destFileName, container, AnnFormat.Annotations, 1); 
 
   // delete the container 
   container = null; 
 
   // Show information about the data we just saved 
   AnnCodecsInfo 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); 
 
   // Load the container we just saved 
   container = codecs.Load(destFileName, 1); 
 
   // Show it 
   ShowContainer("After load", container); 
} 
 
private void ShowContainer(String message, AnnContainer container) 
{ 
   string str = message + "\nContainer size: "; 
 
   // Add the size 
   double inch = 720; 
   double width = container.Size.Width / inch; 
   double height = container.Size.Height / inch; 
   str += width + " by " + height + " inches" + "\n"; 
 
   // Add the objects 
   str += "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); 
}

Requirements

Target Platforms

Reference

AnnContainer Members

Leadtools.Annotations.Engine Namespace

Implementing LEADTOOLS Annotations

Working with Automated Annotations

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Help Version 20.0.2020.3.31

Leadtools.Annotations.Engine Assembly

Introduction

Getting Started

Namespaces

Leadtools.Annotations.Engine Namespace

Assemblies