public void SetLegend() // Called by LegendUpdate
{
KSeries[] legend = KChartHandler.Legend();
guiControls.menuLegend.ClearMenuItems();
for (int i = legend.Length - 1; i >= 0; i--)
{
KSeries series = legend[i]; // captured in the OnClick closure
series.lineButton = guiControls.menuLegend.NewMenuSection(); series.lineButton.SetLegendImage(series);
series.lineButton.OnClick((object s, EventArgs e) => { OnLegendClick(legend, series); });
series.nameButton = guiControls.menuLegend.NewMenuItemButton(); series.nameButton.SetText(series.name);
series.nameButton.OnClick((object s, EventArgs e) => { OnLegendClick(legend, series); });
guiControls.menuLegend.AddMenuRow(new KButton[2] {
series.lineButton, series.nameButton
}); //, pad });
}
guiControls.menuLegend.Open();
}
const int LegendItemHeight = 21; // If this value is too small (for the font size?), Label items will flash a gray box for 2 senconds when updated
public void SetLegend()
{
KSeries[] legend = KChartHandler.Legend();
Xamarin.Forms.Device.BeginInvokeOnMainThread(() => {
var legendList = new ObservableCollection <LegendItem>();
for (int i = legend.Length - 1; i >= 0; i--)
{
legendList.Add(new LegendItem {
Name = legend[i].name,
Color = SkiaSharp.Views.Forms.Extensions.ToFormsColor(legend[i].color),
Width = (legend[i].visible) ? 50 : 6,
Height =
(legend[i].lineStyle == KLineStyle.Thick) ? 4 // show a wide bar for thick plot lines
: (legend[i].lineMode == KLineMode.Line) ? 1 // show a smaller bar for think plot lines
: LegendItemHeight, // show a full rectangle for Range areas
});
}
legendView.ItemsSource = legendList;
MainTabbedPage.theChartPage.inspectionView.Children[0].HeightRequest = 40 + LegendItemHeight * (legend.Length + 1) / 2; // seems redundant?
});
}