ActivityDesignerPaint.DrawExpandButton 메서드

정의

네임스페이스:

System.Workflow.ComponentModel.Design

어셈블리:

System.Workflow.ComponentModel.dll

활동 디자이너 화면에서 복합 디자이너를 확장명 및 축소하는 데 사용되는 단추를 그립니다.

public:
 static void DrawExpandButton(System::Drawing::Graphics ^ graphics, System::Drawing::Rectangle boundingRect, bool drawExpanded, System::Workflow::ComponentModel::Design::CompositeDesignerTheme ^ compositeDesignerTheme);

public static void DrawExpandButton (System.Drawing.Graphics graphics, System.Drawing.Rectangle boundingRect, bool drawExpanded, System.Workflow.ComponentModel.Design.CompositeDesignerTheme compositeDesignerTheme);

static member DrawExpandButton : System.Drawing.Graphics * System.Drawing.Rectangle * bool * System.Workflow.ComponentModel.Design.CompositeDesignerTheme -> unit

Public Shared Sub DrawExpandButton (graphics As Graphics, boundingRect As Rectangle, drawExpanded As Boolean, compositeDesignerTheme As CompositeDesignerTheme)

매개 변수

graphics

Graphics

단추를 그릴 Graphics입니다.

boundingRect

Rectangle

단추의 범위를 정의하는 Rectangle입니다.

drawExpanded

Boolean

확장 단추를 그리려면 true이고, 그렇지 않으면 false입니다.

compositeDesignerTheme

CompositeDesignerTheme

단추를 렌더링하는 데 사용되는 활동 디자이너와 연결된 CompositeDesignerTheme입니다.

예외

ArgumentNullException

graphics 또는 compositeDesignerTheme에 null 참조(Visual Basic의 경우 Nothing)가 포함된 경우

예제

다음 예제에서는 ActivityDesignerPaint 클래스를 사용하여 워크플로 디자인 화면에 사용자 지정 활동을 그리는 방법을 보여 줍니다. 먼저 DrawRoundedRectangle 메서드를 사용하여 모퉁이가 둥근 사각형을 그립니다. 그런 다음 DrawText를 사용하여 텍스트를 그리고 TextRectangle의 ActivityDesigner 위치에 배치합니다. 또한 Image 클래스의 ActivityDesigner 메서드를 사용하여 DrawImage와 연결된 ActivityDesignerPaint를 그립니다. 마지막으로 CompositeActivity에서 사용하는 확장명 단추를 DrawExpandButton을 사용하여 그립니다.

private bool expanded = true;
private bool useBasePaint = false;

public bool UseBasePaint
{
    get { return this.useBasePaint; }
    set { this.useBasePaint = value; }
}

public bool Expanded
{
    get { return this.expanded; }
    set { this.expanded = value; }
}

protected override void OnPaint(ActivityDesignerPaintEventArgs e)
{
    if (this.UseBasePaint == true)
    {
        base.OnPaint(e);
        return;
    }

    DrawCustomActivity(e);
}

private void DrawCustomActivity(ActivityDesignerPaintEventArgs e)
{
    Graphics graphics = e.Graphics;

    CompositeDesignerTheme compositeDesignerTheme = (CompositeDesignerTheme)e.DesignerTheme;

    ActivityDesignerPaint.DrawRoundedRectangle(graphics, compositeDesignerTheme.BorderPen, this.Bounds, compositeDesignerTheme.BorderWidth);

    string text = this.Text;
    Rectangle textRectangle = this.TextRectangle;
    if (!string.IsNullOrEmpty(text) && !textRectangle.IsEmpty)
    {
        ActivityDesignerPaint.DrawText(graphics, compositeDesignerTheme.Font, text, textRectangle, StringAlignment.Center, e.AmbientTheme.TextQuality, compositeDesignerTheme.ForegroundBrush);
    }

    System.Drawing.Image image = this.Image;
    Rectangle imageRectangle = this.ImageRectangle;
    if (image != null && !imageRectangle.IsEmpty)
    {
        ActivityDesignerPaint.DrawImage(graphics, image, imageRectangle, DesignerContentAlignment.Fill);
    }

    ActivityDesignerPaint.DrawExpandButton(graphics,
        new Rectangle(this.Location.X, this.Location.Y, 10, 10),
        this.Expanded,
        compositeDesignerTheme);
}

Private expandedValue As Boolean = True
Private useBasePaintValue As Boolean = False

Public Property UseBasePaint() As Boolean
    Get
        Return Me.useBasePaintValue
    End Get

    Set(ByVal value As Boolean)
        Me.useBasePaintValue = value
    End Set
End Property

Public Property Expanded() As Boolean
    Get
        Return Me.expandedValue
    End Get
    Set(ByVal value As Boolean)
        Me.expandedValue = value
    End Set
End Property


Protected Overrides Sub OnPaint(ByVal e As ActivityDesignerPaintEventArgs)
    If Me.UseBasePaint = True Then
        MyBase.OnPaint(e)
        Return
    End If

    DrawCustomActivity(e)
End Sub

Private Sub DrawCustomActivity(ByVal e As ActivityDesignerPaintEventArgs)
    Dim graphics As Graphics = e.Graphics

    Dim compositeDesignerTheme As CompositeDesignerTheme = CType(e.DesignerTheme, CompositeDesignerTheme)

    ActivityDesignerPaint.DrawRoundedRectangle(graphics, compositeDesignerTheme.BorderPen, Me.Bounds, compositeDesignerTheme.BorderWidth)

    Dim text As String = Me.Text
    Dim TextRectangle As Rectangle = Me.TextRectangle
    If Not String.IsNullOrEmpty(text) And Not TextRectangle.IsEmpty Then
        ActivityDesignerPaint.DrawText(graphics, compositeDesignerTheme.Font, text, TextRectangle, StringAlignment.Center, e.AmbientTheme.TextQuality, compositeDesignerTheme.ForegroundBrush)
    End If

    Dim Image As System.Drawing.Image = Me.Image
    Dim ImageRectangle As Rectangle = Me.ImageRectangle
    If Image IsNot Nothing And Not ImageRectangle.IsEmpty Then
        ActivityDesignerPaint.DrawImage(graphics, Image, ImageRectangle, DesignerContentAlignment.Fill)
    End If

    ActivityDesignerPaint.DrawExpandButton(graphics, _
        New Rectangle(Me.Location.X, Me.Location.Y, 10, 10), _
        Me.Expanded, _
        compositeDesignerTheme)
End Sub