protected override void OnMouseLeftButtonDown(MouseButtonEventArgs e)
{
var renderWidth = _canvas.RenderSize.Width;
var renderHeight = _canvas.RenderSize.Height;
if (renderWidth == 0 || renderHeight == 0)
{
return;
}
var mousePosition = e.GetPosition(_canvas);
var position = new Point(mousePosition.X / renderWidth, mousePosition.Y / renderHeight);
var args = new PositionChangingEventArgs(ThumbPositionChangingEvent, position);
RaiseEvent(args);
if (!args.Cancel)
{
SetCurrentValue(ThumbPositionProperty, args.NewPosition);
}
_thumb.RaiseEvent(e);
e.Handled = true;
base.OnMouseLeftButtonDown(e);
}
private void TabView_PositionChanging(object sender, PositionChangingEventArgs e)
{
// trigger views OnAppearing Event
var newTabbedPage = _tabList[e.NewPosition];
newTabbedPage.OnAppearing(this, e);
// triggers views OnLeaving Event
var oldTabbedpage = _tabList[e.OldPosition];
oldTabbedpage.OnLeaving(this, e);
}
private void Thumb_DragDelta(object sender, DragDeltaEventArgs e)
{
var renderWidth = _canvas.RenderSize.Width;
var renderHeight = _canvas.RenderSize.Height;
if (renderWidth == 0 || renderHeight == 0)
{
return;
}
var mousePosition = Mouse.GetPosition(this);
var position = new Point(mousePosition.X / renderWidth, mousePosition.Y / renderHeight);
var args = new PositionChangingEventArgs(ThumbPositionChangingEvent, position);
RaiseEvent(args);
if (!args.Cancel)
{
SetCurrentValue(ThumbPositionProperty, args.NewPosition);
}
}
private void WmWindowPosChanging(ref Message m)
{
// Extract the WINDOWPOS structure corresponding to this message
NativeMethods.WINDOWPOS wndPos = NativeMethods.WINDOWPOS.FromMessage(m);
// Determine if the size is changing (absence of SWP_NOSIZE flag)
if (!((wndPos.flags & NativeMethods.SetWindowPosFlags.SWP_NOSIZE) == NativeMethods.SetWindowPosFlags.SWP_NOSIZE))
{
// Raise the LowLevelSizeChanging event
SizeChangingEventArgs e = new SizeChangingEventArgs(this.Size, new Size(wndPos.cx, wndPos.cy));
this.OnLowLevelSizeChanging(e);
// Determine if the user canceled the size changing event
if (e.Cancel)
{
// If so, add the SWP_NOSIZE flag
wndPos.flags = wndPos.flags | NativeMethods.SetWindowPosFlags.SWP_NOSIZE;
wndPos.UpdateMessage(m);
}
}
// Determine if the position is changing (absence of SWP_NOMOVE flag)
if (!((wndPos.flags & NativeMethods.SetWindowPosFlags.SWP_NOMOVE) == NativeMethods.SetWindowPosFlags.SWP_NOMOVE))
{
// Raise the LowLevelPositionChanging event
PositionChangingEventArgs e = new PositionChangingEventArgs(this.Location, new Point(wndPos.x, wndPos.y));
this.OnLowLevelPositionChanging(e);
// Determine if the user canceled the position changing event
if (e.Cancel)
{
// If so, add the SWP_NOMOVE flag
wndPos.flags = wndPos.flags | NativeMethods.SetWindowPosFlags.SWP_NOMOVE;
wndPos.UpdateMessage(m);
}
}
base.WndProc(m);
}
private void TabView_PositionChanging(object sender, PositionChangingEventArgs e)
{
}
private void ThumbFence_ThumbPositionChanging(object sender, PositionChangingEventArgs e)
{
}
