private void MultilinePanelContent_OnSizeChanged(object sender, SizeChangedEventArgs e)
{
const double decreaseMultiplyer = 0.95;
const double increaseMultiplyer = 1.05;
var decreaseOffset = ActualFontSize * 1.0;
var increaseOffset = ActualFontSize * 2.2;
if (_lastContainerAdded)
{
if (MultilinePanelContent.ActualHeight > ScrollViewerContent.ActualHeight - decreaseOffset)
{
if (ActualFontSize > MinFontSize)
{
ActualFontSize *= decreaseMultiplyer;
UpdateFontSize();
}
else
{
ScrollViewerContent.ScrollToVerticalOffset(100000);
}
}
}
else
{
if (MultilinePanelContent.ActualHeight < ScrollViewerContent.ActualHeight - increaseOffset)
{
if (ActualFontSize < MaxFontSize)
{
ActualFontSize *= increaseMultiplyer;
UpdateFontSize();
}
}
}
}
private void ScrollViewerContent_PreviewMouseWheel(object sender, MouseWheelEventArgs e)
{
// simply disable the WHOLE preview -> mosue wheel handling, as the WpfControls get disturbed
e.Handled = true;
// scroll ourselves
ScrollViewerContent.ScrollToVerticalOffset(ScrollViewerContent.VerticalOffset - e.Delta);
#if SAMPLE_CODE_EVENT_RAISE
// simply disable mouse scroll for ScrollViewer, as it conflicts with the plots
e.Handled = true;
// if in inner loop, discard
if (scrollInEventRaising)
{
return;
}
if (StackPanelCharts.Children != null)
{
foreach (var uc in StackPanelCharts.Children)
{
if (uc is ScottPlot.WpfPlot wpfPlot)
{
if (wpfPlot.IsMouseOver)
{
continue;
}
// wpfPlot.RaiseEvent(new RoutedEventArgs(UIElement.PreviewMouseWheelEvent, sender));
var eventArg = new MouseWheelEventArgs(e.MouseDevice, e.Timestamp, e.Delta);
eventArg.RoutedEvent = UIElement.MouseWheelEvent;
eventArg.Source = uc;
// this seems to raise consecutive events .. somehow??
wpfPlot.RaiseEvent(eventArg);
}
}
}
#endif
}
