使用silverlight构建一个工作流设计器(十一)(附源代码下载、在线演示、视频教程)

源代码下载：http://www.shareidea.net/opensource.htm

在线演示：http://www.shareidea.net/workflow.htm

视频教程: http://www.shareidea.net/video/sharedesigner/sharedesigner.html

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本文系列索引：

使用silverlight构建一个工作流设计器(一)

使用silverlight构建一个工作流设计器(二)

使用silverlight构建一个工作流设计器(三)

使用silverlight构建一个工作流设计器(四)

使用silverlight构建一个工作流设计器(五)

使用silverlight构建一个工作流设计器(六)

使用silverlight构建一个工作流设计器(七)

使用silverlight构建一个工作流设计器(八)

使用silverlight构建一个工作流设计器(九)

使用silverlight构建一个工作流设计器(十)

使用silverlight构建一个工作流设计器(十一)

本章包含以下内容：

l 规则曲线支持两个中间点的移动

l 双击规则中间点，自定对齐曲线

l 增加选定活动的左右、上下对齐功能

六、增强的用户体验功能

6.8规则曲线支持两个中间点的移动

在前面的规则图形中，也支持曲线类型的线条，但是线条的转折点是自动生成的，根据网友的反馈，希望增加可以用户自己移动的转折点，效果图如下：

Code
public void AlignTop()
{
if (CurrentSelectedControlCollection == null || CurrentSelectedControlCollection.Count == 0)
return;
Activity a = null;
double minY = 100000.0;
for (int i = 0; i < CurrentSelectedControlCollection.Count; i++)
{
if (CurrentSelectedControlCollection[i] is Activity)
{
a = CurrentSelectedControlCollection[i] as Activity;

if (a.CenterPoint.Y < minY)
minY = a.CenterPoint.Y;
}

}
for (int i = 0; i < CurrentSelectedControlCollection.Count; i++)
{
if (CurrentSelectedControlCollection[i] is Activity)
{
a = CurrentSelectedControlCollection[i] as Activity;
a.CenterPoint = new Point(a.CenterPoint.X, minY);
}

}
}
public void AlignBottom()
{
if (CurrentSelectedControlCollection == null || CurrentSelectedControlCollection.Count == 0)
return;
Activity a = null;
double maxY = 0;
for (int i = 0; i < CurrentSelectedControlCollection.Count; i++)
{
if (CurrentSelectedControlCollection[i] is Activity)
{
a = CurrentSelectedControlCollection[i] as Activity;

if (a.CenterPoint.Y >maxY)
maxY = a.CenterPoint.Y;
}

}
for (int i = 0; i < CurrentSelectedControlCollection.Count; i++)
{
if (CurrentSelectedControlCollection[i] is Activity)
{
a = CurrentSelectedControlCollection[i] as Activity;
a.CenterPoint = new Point(a.CenterPoint.X, maxY);
}

}
}
public void AlignLeft()
{

if (CurrentSelectedControlCollection == null || CurrentSelectedControlCollection.Count == 0)
return;
Activity a = null;
double minX = 100000.0;
for (int i = 0; i < CurrentSelectedControlCollection.Count; i++)
{
if (CurrentSelectedControlCollection[i] is Activity)
{
a = CurrentSelectedControlCollection[i] as Activity;

if (a.CenterPoint.X < minX)
minX = a.CenterPoint.X;
}

}
for (int i = 0; i < CurrentSelectedControlCollection.Count; i++)
{
if (CurrentSelectedControlCollection[i] is Activity)
{
a = CurrentSelectedControlCollection[i] as Activity;
a.CenterPoint = new Point(minX, a.CenterPoint.Y);
}

}

}
public void AlignRight()
{
if (CurrentSelectedControlCollection == null || CurrentSelectedControlCollection.Count == 0)
return;
Activity a = null;
double maxX = 0;
for (int i = 0; i < CurrentSelectedControlCollection.Count; i++)
{
if (CurrentSelectedControlCollection[i] is Activity)
{
a = CurrentSelectedControlCollection[i] as Activity;

if (a.CenterPoint.X > maxX)
maxX = a.CenterPoint.X;
}

}
for (int i = 0; i < CurrentSelectedControlCollection.Count; i++)
{
if (CurrentSelectedControlCollection[i] is Activity)
{
a = CurrentSelectedControlCollection[i] as Activity;
a.CenterPoint = new Point(maxX, a.CenterPoint.Y);
}

}
}