LEADTOOLS(Leadtools.Annotations.Core)

フレームを表示

このサンプルは、LEADTOOLSアノテーションでXAMLテンプレートからカスタムオブジェクトを実装する方法を示します。固体の長方形から完全なXAMLコントロールまでAnnNoteObjectの外観を修正します。

  1. WinRTの自動アノテーションの操作」で作成したそれを計画しますを開きます。
  2. 新しいクラスファイル(MyNoteObjectRenderer.cs)を追加して、以下のcodeを追加します:

    [C#]

    
                 using System;
                 using System.Collections.Generic;
                 
                 using Windows.Foundation;
                 using Windows.UI;
                 using Windows.UI.Xaml;
                 using Windows.UI.Xaml.Media;
                 using Windows.UI.Xaml.Shapes;
                 using Windows.UI.Xaml.Controls;
                 
                 using Leadtools;
                 using Leadtools.Annotations.Core;
                 using Leadtools.Annotations.Rendering;
                 
                 namespace MyNamespace
                 {
                    // Custom Note renderer
                    public class MyNoteObjectRenderer : AnnObjectRenderer
                    {
                       // The current object to render
                       private AnnNoteObject _annObject;
                       // Current object transform
                       private MatrixTransform _matrixTransform;
                       // Current mapper
                       private AnnContainerMapper _mapper;
                       // Current object bounds;
                       private LeadRectD _bounds;
                 
                       // Override AnnObjectRenderer.VisualComponents, this gets called
                       // from Render to construct the object visuals
                       public override List<FrameworkElement> VisualComponents
                       {
                          get
                          {
                             // Get the rendering engine
                             AnnWinRTRenderingEngine engine = RenderingEngine as AnnWinRTRenderingEngine;
                 
                             // Get the children canvas
                             Dictionary<AnnObject, AnnObjectVisual> childrenCanvas = engine.ChildrenCanvas;
                 
                             // Get the visual object for this AnnObject
                             AnnObjectVisual annObjectVisual = childrenCanvas[_annObject];
                 
                             FrameworkElement element;
                 
                             // See if we are already added
                             if (!annObjectVisual.ContainsVisualComponents())
                             {
                                // No, add us, this is the XAML template
                                // This defines a Grid with three text blocks for the header/footer and content.
                                string xaml = "<Grid xmlns:x=\"http://schemas.microsoft.com/winfx/2006/xaml\" xmlns=\"http://schemas.microsoft.com/winfx/2006/xaml/presentation\"" +
                                   " Background=\"Red\" HorizontalAlignment=\"Stretch\" VerticalAlignment=\"Stretch\">" +
                                   "<Grid.RowDefinitions>" +
                                      "<RowDefinition Height=\"0.25*\"/>" +
                                      "<RowDefinition Height=\"*\"/>" +
                                      "<RowDefinition Height=\"0.25*\"/>" +
                                   "</Grid.RowDefinitions>" +
                                   "<Grid Grid.Row=\"0\" Background=\"Yellow\">" +
                                      "<TextBlock x:Name=\"Header\" Foreground=\"Black\" Text=\"Header\" TextAlignment=\"Center\" VerticalAlignment=\"Center\"/>" +
                                   "</Grid>" +
                                   "<TextBlock Grid.Row=\"1\" x:Name=\"Content\" Text=\"Content\" TextAlignment=\"Center\"/>" +
                                   "<Grid Grid.Row=\"2\" Background=\"Blue\">" +
                                      "<TextBlock x:Name=\"Footer\" Foreground=\"Yellow\" Text=\"Footer\" TextAlignment=\"Center\"  VerticalAlignment=\"Center\"/>" +
                                   "</Grid>" +
                                "</Grid>";
                 
                                element = Windows.UI.Xaml.Markup.XamlReader.Load(xaml) as FrameworkElement;
                                annObjectVisual.VisualComponents.Add(element);
                             }
                 
                             // Get the element
                             element = annObjectVisual.VisualComponents[0] as FrameworkElement;
                 
                             // Set the text, find the Content element
                             TextBlock textBlock = element.FindName("Content") as TextBlock;
                             textBlock.Text = _annObject.Text;
                 
                             // Set the size
                             element.Width = _bounds.Width;
                             element.Height = _bounds.Height;
                 
                             // Set the location
                             if (!double.IsInfinity(_bounds.X) && !double.IsInfinity(_bounds.Y) &&
                                !double.IsNaN(_bounds.X) && !double.IsNaN(_bounds.Y))
                             {
                                Canvas.SetLeft(element, _bounds.X);
                                Canvas.SetTop(element, _bounds.Y);
                             }
                 
                             // Set the transform
                             element.RenderTransform = _matrixTransform;
                 
                             return annObjectVisual.VisualComponents;
                          }
                       }
                 
                       public override void Render(AnnContainerMapper mapper, AnnObject annObject)
                       {
                          if (mapper == null) throw new ArgumentNullException("mapper");
                          if (annObject == null) throw new ArgumentNullException("annObject");
                 
                          // Save the object and mapper
                          _annObject = annObject as AnnNoteObject;
                          _mapper = mapper;
                 
                          if (_annObject.Bounds.Width == 0 && _annObject.Bounds.Height == 0)
                             return;
                 
                          // Get the render points
                          LeadPointD[] renderPoints = GetRenderPoints(mapper, _annObject);
                 
                          // Get the bounding rectangle in physical coordinates and save it
                          _bounds = mapper.RectFromContainerCoordinates(_annObject.Rect, _annObject.FixedStateOperations);
                 
                          // Create the rotation transform
                 
                          // Get the center point
                          LeadPointD center = LeadPointDHelper.Create(_bounds.X + _bounds.Width / 2, _bounds.Y + _bounds.Height / 2);
                 
                          LeadMatrix objectRotation = LeadMatrix.Identity;
                          objectRotation.RotateAt(_annObject.Angle, center.X - _bounds.X, center.Y - _bounds.Y);
                 
                          _matrixTransform = new MatrixTransform();
                          _matrixTransform.Matrix = new Matrix(objectRotation.M11, objectRotation.M12, objectRotation.M21, objectRotation.M22, objectRotation.OffsetX, objectRotation.OffsetY);
                 
                          base.Render(mapper, annObject);
                 
                          // Reset the parameters
                          _annObject = null;
                          _matrixTransform = null;
                          _mapper = null;
                          _bounds = LeadRectDHelper.Empty;
                       }
                    }
                 }
                 
    
  3. この:としてMainPageでAutomationAttachメソッドを修正します

    [C#]

    
                 public void AutomationAttach(AnnContainer container)
                 {
                    _container = container;
                    _engine = new AnnWinRTRenderingEngine(_container, _viewer);
                
                    // Replace the default note renderer with our own
                    IAnnObjectRenderer originalRenderer = renderingEngine.Renderers[AnnObject.NoteObjectId];
                    MyNoteObjectRenderer myNoteObjectRenderer = new MyNoteObjectRenderer();
                    myNoteObjectRenderer.LocationsThumbStyle = originalRenderer.LocationsThumbStyle;
                    myNoteObjectRenderer.RotateCenterThumbStyle = originalRenderer.RotateCenterThumbStyle;
                    myNoteObjectRenderer.RotateGripperThumbStyle = originalRenderer.RotateGripperThumbStyle;
                    _engine.Renderers[AnnObject.NoteObjectId] = myNoteObjectRenderer;
                
                    if (_engine != null)
                    {
                       _engine.Render(LeadRectDHelper.Create(0, 0, _viewer.Width, _viewer.Height), true);
                    }
                 }
                 
    
  4. プログラムをビルドして実行し、テストします。