public static void Table <T>(this IEnumerable <T> items, string id, ref T selectedItem)
{
var props = typeof(T).GetProperties();
ImGui.BeginChild("##scrolling");
ImGui.Columns(props.Length, "##columns", true);
PropertyInfo idProp = null;
foreach (var prop in props)
{
if (prop.Name == id)
{
idProp = prop;
}
ImGui.Text(prop.Name);
ImGui.NextColumn();
}
float itemHeight = ImGuiNative.igGetTextLineHeightWithSpacing();
int displayStart = 0, displayEnd = items.Count();
ImGui.CalcListClipping(displayEnd, itemHeight, ref displayStart, ref displayEnd);
var visibleitems = items.Skip(displayStart).Take(displayEnd - displayStart).ToArray();
foreach (var prop in props)
{
ImGuiNative.igSetCursorPosY(ImGuiNative.igGetCursorPosY() + (displayStart * itemHeight));
foreach (var i in visibleitems)
{
if (ImGui.Selectable(prop.GetValue(i).ToString() + "##" + idProp?.GetValue(i).ToString(),
i.Equals(selectedItem)))
{
selectedItem = i;
}
}
ImGui.NextColumn();
}
ImGui.Columns(1, "##columns", true);
ImGui.EndChild();
}
public void Begin(int count, float items_height = -1.0f)
{
StartPosY = ImGuiNative.igGetCursorPosY();
ItemsHeight = items_height;
ItemsCount = count;
StepNo = 0;
DisplayEnd = DisplayStart = -1;
if (ItemsHeight > 0.0f)
{
ImGui.CalcListClipping(ItemsCount, ItemsHeight, ref DisplayStart, ref DisplayEnd); // calculate how many to clip/display
if (DisplayStart > 0)
{
//SetCursorPosYAndSetupDummyPrevLine(StartPosY + DisplayStart * ItemsHeight, ItemsHeight); // advance cursor
ImGuiNative.igSetCursorPosY(StartPosY + DisplayStart * ItemsHeight);
}
StepNo = 2;
}
}
