public void AddOscSwiperBtn(ChannelItem ch)
{
OscSwiperBtn oscSwiperBtn = new OscSwiperBtn("style_2");
oscSwiperBtn.Id = ch.Id;
oscSwiperBtn.channelItem = ch;
Binding binding = new Binding {
Source = ch, Path = new PropertyPath("Color")
};
oscSwiperBtn.SetBinding(OscSwiperBtn.colorProperty, binding);
Binding binding1 = new Binding {
Source = ch, Path = new PropertyPath("Name")
};
oscSwiperBtn.SetBinding(OscSwiperBtn.textProperty, binding1);
double val = (double)(ruler_y.ActualHeight / 2 - 10 - ch.Offset_Y);
oscSwiperBtn.SetValue(Canvas.TopProperty, val);
oscSwiperBtn.SetValue(Canvas.RightProperty, 0d);
oscSwiperBtn.SetValue(OpacityProperty, 0.7d);
//订阅事件
oscSwiperBtn.PreviewMouseDown += SwiperBtn_MouseDown;
oscSwiperBtn.PreviewMouseMove += SwiperBtn_MouseMove;
oscSwiperBtn.PreviewMouseUp += SwiperBtn_MouseUp;
//添加到canvas中
this.SwiperCanvas_2.Children.Add(oscSwiperBtn);
}
public void RemoveOscSwiperBtn(int id)
{
foreach (UIElement element in SwiperCanvas_2.Children)
{
OscSwiperBtn btn = (OscSwiperBtn)element;
if (btn.Id == id)
{
SwiperCanvas_2.Children.Remove(btn);
return;
}
}
}
private void SwiperBtn_MouseDown(object sender, MouseButtonEventArgs e)
{
OscSwiperBtn btn = (OscSwiperBtn)sender;
isMouseDownSwiperBtn = true;
if (btn.Style == "style_1")
{
start_y = e.GetPosition(SwiperCanvas_1).X;
first = (double)btn.GetValue(Canvas.LeftProperty);
}
else if (btn.Style == "style_2")
{
start_y = e.GetPosition(SwiperCanvas_2).Y;
first = (double)btn.GetValue(Canvas.TopProperty);
}
}
private void SwiperBtn_MouseMove(object sender, MouseEventArgs e)
{
OscSwiperBtn btn = (OscSwiperBtn)sender;
if (isMouseDownSwiperBtn)
{
if (btn.Style == "style_1")
{
end_y = e.GetPosition(SwiperCanvas_1).X;
double val = first + (end_y - start_y);
if (val < -10)
{
val = -10;
}
if (val > SwiperCanvas_1.ActualWidth - 20)
{
val = SwiperCanvas_1.ActualWidth - 20;
}
btn.SetValue(Canvas.LeftProperty, val);
e.Handled = true;
}
else if (btn.Style == "style_2")
{
end_y = e.GetPosition(SwiperCanvas_2).Y;
double val = first + (end_y - start_y);
if (val < -10)
{
val = -10;
}
if (val > SwiperCanvas_2.ActualHeight - 20)
{
val = SwiperCanvas_2.ActualHeight - 20;
}
btn.channelItem.Offset_Y = ruler_y.ActualHeight / 2 - val - 10;
btn.SetValue(Canvas.TopProperty, val);
e.Handled = true;
}
}
}