public override void Resize(ResizeLocations location, Point oldPos, Point newPos)
{
throw new NotImplementedException();
}
/// <summary> /// 对图形进行调整大小的操作 /// </summary> /// <param name="location">缩放的点的位置</param> /// <param name="resizePos">缩放的点的坐标</param> /// <param name="newPos">顶点的新位置</param> public abstract void Resize(ResizeLocations location, Point resizePos, Point newPos);
public override void Resize(ResizeLocations location, Point oldPos, Point newPos)
{
switch (location)
{
case ResizeLocations.TopLeft:
{
double targetWidth = this.Width - (newPos.X - this.Point1X);
double targetHeight = this.Height - (newPos.Y - this.Point1Y);
if (targetWidth < PadContext.MinimalVisualSize)
{
}
else
{
this.Width = targetWidth;
this.Point1X = newPos.X;
}
if (targetHeight < PadContext.MinimalVisualSize)
{
}
else
{
this.Height = targetHeight;
this.Point1Y = newPos.Y;
}
break;
}
case ResizeLocations.TopRight:
{
double targetWidth = newPos.X - this.Point1X;
double targetHeight = this.Height - (newPos.Y - this.Point1Y);
if (targetWidth < PadContext.MinimalVisualSize)
{
}
else
{
this.Width = targetWidth;
}
if (targetHeight < PadContext.MinimalVisualSize)
{
}
else
{
this.Height = targetHeight;
this.Point1Y = newPos.Y;
}
break;
}
case ResizeLocations.BottomLeft:
{
double targetWidth = this.Width - (newPos.X - this.Point1X);
double targetHeight = newPos.Y - this.Point1Y;
if (targetWidth < PadContext.MinimalVisualSize)
{
}
else
{
this.Width = targetWidth;
this.Point1X = newPos.X;
}
if (targetHeight < PadContext.MinimalVisualSize)
{
}
else
{
this.Height = targetHeight;
}
break;
}
case ResizeLocations.BottomRight:
{
double targetWidth = newPos.X - this.Point1X;
double targetHeight = newPos.Y - this.Point1Y;
if (targetWidth < PadContext.MinimalVisualSize)
{
}
else
{
this.Width = targetWidth;
}
if (targetHeight < PadContext.MinimalVisualSize)
{
}
else
{
this.Height = targetHeight;
}
break;
}
default:
throw new NotImplementedException();
}
}
protected override void OnMouseLeftButtonDown(MouseButtonEventArgs e)
{
base.OnMouseLeftButtonDown(e);
this.previouseSelectedVisual = this.selectedVisual;
Point cursorPosition = e.GetPosition(this);
VisualGraphics visualHit = this.HitTestFirstVisual <ExcludedNullVisual>(cursorPosition);
if (visualHit == null)
{
if (this.selectedVisual != null)
{
this.selectedVisual.IsSelected = false;
this.selectedVisual.IsDrawHandle = false;
this.selectedVisual.Render();
this.selectedVisual = null;
}
// 停止编辑状态
this.StopVisualInputState(this.previouseSelectedVisual);
TextBoxEditor.Visibility = Visibility.Collapsed;
// 重置到空闲状态
this.visualState = Visuals.VisualState.Idle;
return;
}
this.ProcessSelectedVisualChanged(this.selectedVisual, visualHit);
this.selectedVisual = visualHit;
this.previousPosition = cursorPosition;
if (e.ClickCount == 2)
{
// 双击图形，那么进入编辑状态
this.visualState = Visuals.VisualState.InputState;
this.StartVisualInputState(this.selectedVisual);
}
else
{
this.StopVisualInputState(this.previouseSelectedVisual);
#region 判断是否点击了连接点
for (int i = 0; i < visualHit.ConnectionHandles; i++)
{
Rect bounds = visualHit.GetConnectorBounds(i);
if (bounds.Contains(cursorPosition))
{
Point center = bounds.GetCenter();
ConnectionLocations location = visualHit.GetConnectorLocation(i);
this.visualState = Visuals.VisualState.Connecting;
GraphicsPolyline graphics = new GraphicsPolyline()
{
AssociatedGraphics1 = visualHit.ID,
Graphics1Handle = i
};
this.polyline = this.DrawVisual(graphics) as VisualPolyline;
this.firstConnector = center;
this.firstConnectorLocation = location;
this.firstVisual = visualHit;
return;
}
}
#endregion
#region 判断是否点击了Reisze点
for (int i = 0; i < visualHit.ResizeHandles; i++)
{
Rect bounds = visualHit.GetResizeHandleBounds(i);
if (bounds.Contains(cursorPosition))
{
this.resizeCenter = bounds.GetCenter();
this.resizeLocation = visualHit.Graphics.GetResizeLocation(this.resizeCenter);
this.visualState = Visuals.VisualState.Resizing;
return;
}
}
#endregion
#region 是平移状态
// 获取当前被移动的图形所有的连接点信息
this.associatedPolylines = this.GetAssociatedPolylines(visualHit.Graphics);
Console.WriteLine("关联的折线有{0}个", this.associatedPolylines.Count);
this.translateVisual = visualHit;
this.visualState = Visuals.VisualState.Translate;
#endregion
}
}
/// <summary>
/// 对图形做缩放操作
/// </summary>
/// <param name="location">缩放的点的坐标</param>
/// <param name="newPos">新的坐标</param>
public virtual void Resize(ResizeLocations location, Point resizePos, Point newPos)
{
this.Graphics.Resize(location, resizePos, newPos);
this.Render();
}
