방법: 잉크 데이터에 사용자 지정 데이터 추가

2008-08-20

업데이트: 2007년 11월

잉크를 ISF(Serialize된 잉크 형식)로 저장할 때 잉크에 사용자 지정 데이터를 추가할 수 있습니다. 사용자 지정 데이터는 DrawingAttributes, StrokeCollection 또는 Stroke에 저장할 수 있습니다. 사용자 지정 데이터를 세 개체에 저장할 수 있기 때문에 데이터를 저장할 최적의 위치를 선택할 수 있습니다. 세 클래스 모두 비슷한 메서드로 사용자 지정 데이터를 저장하고 액세스합니다.

다음 형식만 사용자 지정 데이터로 저장할 수 있습니다.

예제

다음 예제에서는 StrokeCollection에서 사용자 지정 데이터를 추가하고 검색하는 방법을 보여 줍니다.

Private timestamp As New Guid("12345678-9012-3456-7890-123456789012")


' Add a timestamp to the StrokeCollection.
Private Sub AddTimestamp() 

    inkCanvas1.Strokes.AddPropertyData(timestamp, DateTime.Now)

End Sub 'AddTimestamp


' Get the timestamp of the StrokeCollection.
Private Sub GetTimestamp() 

    If inkCanvas1.Strokes.ContainsPropertyData(timestamp) Then
        Dim [date] As Object = inkCanvas1.Strokes.GetPropertyData(timestamp)

        If TypeOf [date] Is DateTime Then
            MessageBox.Show("This StrokeCollection's timestamp is " + CType([date], DateTime).ToString())
        End If
    Else
        MessageBox.Show("The StrokeCollection does not have a timestamp.")
    End If

End Sub 'GetTimestamp

Guid timestamp = new Guid("12345678-9012-3456-7890-123456789012");

// Add a timestamp to the StrokeCollection.
private void AddTimestamp()
{

    inkCanvas1.Strokes.AddPropertyData(timestamp, DateTime.Now);
}

// Get the timestamp of the StrokeCollection.
private void GetTimestamp()
{

    if (inkCanvas1.Strokes.ContainsPropertyData(timestamp))
    {
        object date = inkCanvas1.Strokes.GetPropertyData(timestamp);

        if (date is DateTime)
        {
            MessageBox.Show("This StrokeCollection's timestamp is " +
                ((DateTime)date).ToString());
        }
    }
    else
    {
        MessageBox.Show(
            "The StrokeCollection does not have a timestamp.");
    }
}

다음 예제에서는 InkCanvas 및 두 개의 단추를 표시하는 응용 프로그램을 만듭니다. switchAuthor 단추를 통해 두 명의 작성자가 두 개의 펜을 사용할 수 있습니다. changePenColors 단추는 작성자에 따라 InkCanvas의 각 스트로크 색을 변경합니다. 응용 프로그램은 두 개의 DrawingAttributes 개체를 정의하고 Stroke를 그린 작성자를 나타내는 사용자 지정 속성을 각 개체에 추가합니다. 사용자가 changePenColors를 클릭하면 응용 프로그램에서 스트로크의 모양이 사용자 지정 속성의 값에 따라 변경됩니다.

<Window x:Class="Window1"
    xmlns="https://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="https://schemas.microsoft.com/winfx/2006/xaml"
    Title="Adding Custom Data to Ink" Height="500" Width="700"
    >
  <DockPanel Name="root">

    <StackPanel  Background="DarkSlateBlue">
      <Button Name="switchAuthor" Click="switchAuthor_click" >
        Switch to student's pen 
      </Button>
      <Button Name="changePenColors" Click="changeColor_click" >
        Change the color of the pen ink
      </Button>
    </StackPanel>
    <InkCanvas Name="inkCanvas1">
    </InkCanvas>
  </DockPanel>
</Window>

Imports System
Imports System.Windows
Imports System.Windows.Controls
Imports System.Windows.Data
Imports System.Windows.Documents
Imports System.Windows.Media
Imports System.Windows.Media.Imaging
Imports System.Windows.Shapes
Imports System.Windows.Ink


'/ <summary>
'/ Interaction logic for Window1.xaml
'/ </summary>

Partial Class Window1
    Inherits Window '

    Private authorGuid As New Guid("12345678-9012-3456-7890-123456789012")
    Private teachersDA As New DrawingAttributes()
    Private studentsDA As New DrawingAttributes()
    Private teacher As String = "teacher"
    Private student As String = "student"
    Private useStudentPen As Boolean = False


    Public Sub New()
        InitializeComponent()

        teachersDA.Color = Colors.Red
        teachersDA.Width = 5
        teachersDA.Height = 5
        teachersDA.AddPropertyData(authorGuid, teacher)

        studentsDA.Color = Colors.Blue
        studentsDA.Width = 5
        studentsDA.Height = 5
        studentsDA.AddPropertyData(authorGuid, student)

        inkCanvas1.DefaultDrawingAttributes = teachersDA

    End Sub 'New


    ' Switch between using the 'pen' DrawingAttributes and the 
    ' 'highlighter' DrawingAttributes.
    Private Sub switchAuthor_click(ByVal sender As [Object], ByVal e As RoutedEventArgs)
        useStudentPen = Not useStudentPen

        If useStudentPen Then
            switchAuthor.Content = "Use teacher's pen"
            inkCanvas1.DefaultDrawingAttributes = studentsDA
        Else
            switchAuthor.Content = "Use student's pen"
            inkCanvas1.DefaultDrawingAttributes = teachersDA
        End If

    End Sub 'switchAuthor_click


    ' Change the color of the ink that on the InkCanvas that used the pen.
    Private Sub changeColor_click(ByVal sender As [Object], ByVal e As RoutedEventArgs)
        Dim s As Stroke
        For Each s In inkCanvas1.Strokes
            If s.DrawingAttributes.ContainsPropertyData(authorGuid) Then
                Dim data As Object = s.DrawingAttributes.GetPropertyData(authorGuid)

                If TypeOf data Is String AndAlso CStr(data) = teacher Then
                    s.DrawingAttributes.Color = Colors.Black
                End If
                If TypeOf data Is String AndAlso CStr(data) = student Then
                    s.DrawingAttributes.Color = Colors.Green
                End If
            End If
        Next s

    End Sub 'changeColor_click
End Class 'Window1

using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;
using System.Windows.Ink;

/// <summary>
/// Interaction logic for Window1.xaml
/// </summary>

public partial class Window1 : Window
{
    Guid authorGuid = new Guid("12345678-9012-3456-7890-123456789012");
    DrawingAttributes teachersDA = new DrawingAttributes();
    DrawingAttributes studentsDA = new DrawingAttributes();
    string teacher = "teacher";
    string student = "student";
    bool useStudentPen = false;

    public Window1()
    {
        InitializeComponent();

        teachersDA.Color = Colors.Red;
        teachersDA.Width = 5;
        teachersDA.Height = 5;
        teachersDA.AddPropertyData(authorGuid, teacher);

        studentsDA.Color = Colors.Blue;
        studentsDA.Width = 5;
        studentsDA.Height = 5;
        studentsDA.AddPropertyData(authorGuid, student);

        inkCanvas1.DefaultDrawingAttributes = teachersDA;
    }

    // Switch between using the 'pen' DrawingAttributes and the 
    // 'highlighter' DrawingAttributes.
    void switchAuthor_click(Object sender, RoutedEventArgs e)
    {
        useStudentPen = !useStudentPen;

        if (useStudentPen)
        {
            switchAuthor.Content = "Use teacher's pen";
            inkCanvas1.DefaultDrawingAttributes = studentsDA;
        }
        else
        {
            switchAuthor.Content = "Use student's pen";
            inkCanvas1.DefaultDrawingAttributes = teachersDA;

        }
    }

    // Change the color of the ink that on the InkCanvas that used the pen.
    void changeColor_click(Object sender, RoutedEventArgs e)
    {
        foreach (Stroke s in inkCanvas1.Strokes)
        {
            if (s.DrawingAttributes.ContainsPropertyData(authorGuid))
            {
                object data = s.DrawingAttributes.GetPropertyData(authorGuid);

                if ((data is string) && ((string)data == teacher))
                {
                    s.DrawingAttributes.Color = Colors.Black;
                }
                if ((data is string) && ((string)data == student))
                {
                    s.DrawingAttributes.Color = Colors.Green;
                }
            }
        }
    }
}

다음을 통해 공유

방법: 잉크 데이터에 사용자 지정 데이터 추가

예제

추가 리소스