ActivityDesignerPaint 類別

定義

命名空間:

System.Workflow.ComponentModel.Design

組件:

System.Workflow.ComponentModel.dll

警告

The System.Workflow.* types are deprecated. Instead, please use the new types from System.Activities.*

提供靜態方法，用來在活動設計工具介面上繪製使用者介面項目。 此類別無法獲得繼承。

public ref class ActivityDesignerPaint abstract sealed

[System.Obsolete("The System.Workflow.* types are deprecated.  Instead, please use the new types from System.Activities.*")]
public static class ActivityDesignerPaint

[<System.Obsolete("The System.Workflow.* types are deprecated.  Instead, please use the new types from System.Activities.*")>]
type ActivityDesignerPaint = class

Public Class ActivityDesignerPaint

繼承

Object

ActivityDesignerPaint

屬性

ObsoleteAttribute

範例

下列範例將示範使用 ActivityDesignerPaint 類別在工作流程設計介面上繪製自訂活動。 先使用 DrawRoundedRectangle 方法來繪製圓角矩形。 然後，使用 DrawText 繪製文字，並放置在 TextRectangle 的 ActivityDesigner 位置。 此外，與 Image 相關聯的 ActivityDesigner 是使用 DrawImage 類別的 ActivityDesignerPaint 方法進行繪製的。 最後，CompositeActivity 所使用的展開按鈕是使用 DrawExpandButton 繪製的。

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

備註

注意

此資料討論已被汰換的類型及命名空間。 如需詳細資訊，請參閱 Windows Workflow Foundation 4.5 中即將淘汰的類型。

方法

Draw3DButton(Graphics, Image, Rectangle, Single, ButtonState)	已淘汰. 在活動設計工具介面上繪製 3D 按鈕。
DrawExpandButton(Graphics, Rectangle, Boolean, CompositeDesignerTheme)	已淘汰. 在活動設計工具介面上繪製用來展開和摺疊複合設計工具的按鈕。
DrawImage(Graphics, Image, Rectangle, DesignerContentAlignment)	已淘汰. 使用 Graphics、Image、Rectangle 和 DesignerContentAlignment，在活動設計工具介面上繪製影像。
DrawImage(Graphics, Image, Rectangle, Rectangle, DesignerContentAlignment, Single, Boolean)	已淘汰. 使用 Graphics、Image、一個來源和目的 Rectangle、DesignerContentAlignment、單精確度浮點數和布林值，在活動設計工具介面上繪製影像。
DrawRoundedRectangle(Graphics, Pen, Rectangle, Int32)	已淘汰. 在活動設計工具介面上繪製圓角矩形。
DrawText(Graphics, Font, String, Rectangle, StringAlignment, TextQuality, Brush)	已淘汰. 在活動設計工具介面上繪製文字。
GetRoundedRectanglePath(Rectangle, Int32)	已淘汰. 傳回用來繪製指定之圓角矩形的圖形路徑。