//被拖动的控件
private void MyCanvas_MouseDown(object sender, MouseButtonEventArgs e)
{
if (e.LeftButton == MouseButtonState.Pressed)
{
dragging = true; //标记鼠标按下
mousePoint = e.GetPosition(this.MyCanvas); //获取鼠标在但前canvas内的位置
//if (e.Source.GetType().Name == "NodeBox")
//{
// return;
//}
//mouseCtrl = (Control)e.Source; //获得事件触发的源，即哪个控件
//mouseCtrl = (Canvas)e.Source; //获得事件触发的源，即哪个控件
mouseCtrl = (Canvas)sender;
VisualBrush v;
v = new VisualBrush(mouseCtrl);//利用VisualBrush得到控件的影像
shadow.Width = mouseCtrl.Width;
shadow.Height = mouseCtrl.Height;
shadow.Fill = v;//将影像填充给矩形
Canvas.SetLeft(shadow, Canvas.GetLeft(mouseCtrl));
Canvas.SetTop(shadow, Canvas.GetTop(mouseCtrl));
shadow.Visibility = Visibility.Visible; //使矩形可见
//Canvas.SetZIndex(shadow, 0);//可以通过SetZIndex设置阴影的z方向位置
MyCanvas.CaptureMouse(); //强制捕获鼠标。这在对于背景透明的窗体里面是必须的
}
}
private void MyCanvas_OnMouseDown(object sender, MouseButtonEventArgs e)
{
if (e.LeftButton == MouseButtonState.Pressed)
{
_startPoint = Mouse.GetPosition(MyCanvas);
MyCanvas.CaptureMouse();
_isDragging = true;
CreateRectangle();
}
}
//左クリック時
private void MyCanvas_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
IsDrawing = true; //描画フラグ
MyCanvas.CaptureMouse(); //マウスがCanvas外に出でも感知できるように
//Polyline作成してCanvasに追加表示
MyPolyline = new Polyline();
MyPolyline.Stroke = Brushes.Blue;
MyPolyline.StrokeThickness = 20;
MyPolyline.StrokeLineJoin = PenLineJoin.Round;
MyListPolyline.Add(MyPolyline);
MyCanvas.Children.Add(MyPolyline);
}
void MyCanvas_PreviewMouseLeftButtonDown(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
if (e.Source == MyCanvas)
{
}
else
{
_isDown = true;
_startPoint = e.GetPosition(MyCanvas);
_originalElement = e.Source as UIElement;
MyCanvas.CaptureMouse();
e.Handled = true;
}
}
//マウス右クリックしたとき
private void MyCanvas_MouseRightButtonDown(object sender, MouseButtonEventArgs e)
{
Point mp = e.GetPosition(MyCanvas);
//マウスがCanvas外に出でも感知できるように
MyCanvas.CaptureMouse();
//polyline
TempPolyline = InitializePolyline();
TempPolyline.Points.Add(mp);
MyCanvas.Children.Add(TempPolyline);
IsDrawing = true;//描画フラグ
}
private void OnLeftDown(object sender, MouseButtonEventArgs e)
{
if (!MyCanvas.IsMouseCaptured)
{
Point startPoint = e.GetPosition(MyCanvas);
maskDrawer = new MaskDrawer(MyCanvas);
maskDrawer.bezierType = beziertype;
maskDrawer.fillRule = fillrule;
maskDrawer.downsampleRate = downsampleRate;
maskDrawer.StartDrawingFreehandPath(startPoint);
MyCanvas.CaptureMouse();
}
}
private void MyCanvas_MouseMove(object sender, MouseEventArgs e)
{
if (action.Equals("connect") && (state1 != null) && _isMoving)
{
if (line != null)
{
MyCanvas.Children.Remove(line);
line = null;
}
line = new Line();
line.X1 = state1.X + 50;
line.Y1 = state1.Y + 25;
Console.WriteLine(Mouse.GetPosition(MyCanvas));
Point point = Mouse.GetPosition(MyCanvas);
line.X2 = point.X - 5;
line.Y2 = point.Y;
line.StrokeThickness = 2;
line.Stroke = Brushes.Black;
MyCanvas.Children.Add(line);
MyCanvas.CaptureMouse();
}
else if (action.Equals("select") && movingState != null)
{
MyCanvas.Children.Remove(movingGrid as UIElement);
Point mousePos = Mouse.GetPosition(MyCanvas);
Console.WriteLine("Position: " + mousePos.ToString());
State state = new State
{
X = mousePos.X - 25,
Y = mousePos.Y - 25,
Width = 50,
Height = 50,
Id = Int32.Parse(movingState.Content.Substring(1))
};
States.Add(state);
Ellipse stateel = new Ellipse
{
Height = 50,
Width = 50,
Fill = Brushes.LightBlue,
Stroke = Brushes.Black
};
Label lbl = new Label
{
Content = "S" + Int32.Parse(movingState.Content.Substring(1)),
Height = 50,
Width = 50,
HorizontalContentAlignment = HorizontalAlignment.Center,
VerticalContentAlignment = VerticalAlignment.Center
};
Grid stateGrid = new Grid();
stateGrid.Children.Add(stateel);
stateGrid.Children.Add(lbl);
stateGrid.Width = 50;
stateGrid.Height = 50;
stateGrid.Cursor = Cursors.Hand;
Canvas.SetLeft(stateGrid, state.X);
Canvas.SetTop(stateGrid, state.Y);
MyCanvas.Children.Add(stateGrid);
movingGrid = stateGrid;
MyCanvas.CaptureMouse();
}
}