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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace ElmSharp.Wearable
{
public class RotarySelector : Layout
{
const string IconPartName = "selector,icon";
const string ContentPartName = "selector,content";
const string BgPartName = "selector,bg_image";
const string ItemSelectedEventName = "item,selected";
const string ItemClickedEventName = "item,clicked";
public event EventHandler<RotarySelectorItemEventArgs> Selected;
public event EventHandler<RotarySelectorItemEventArgs> Clicked;
SmartEvent<PointerEventArgs> _selectedEvent;
SmartEvent<PointerEventArgs> _clickedEvent;
Image _normalBgImage;
public IList<RotarySelectorItem> Items { get; private set; }
public RotarySelector(EvasObject parent) : base(parent)
{
Items = new RotarySelectorList(this);
_selectedEvent = new SmartEvent<PointerEventArgs>(this, "item,selected", (d, o, info) => new PointerEventArgs { Pointer = info });
_clickedEvent = new SmartEvent<PointerEventArgs>(this, "item,clicked", (d, o, info) => new PointerEventArgs { Pointer = info });
_selectedEvent.On += (s, e) =>
{
RotarySelectorItem selected = Items.FirstOrDefault(i => i.Handle == e.Pointer);
Selected?.Invoke(this, new RotarySelectorItemEventArgs { Item = selected });
};
_clickedEvent.On += (s, e) =>
{
RotarySelectorItem selected = Items.FirstOrDefault(i => i.Handle == e.Pointer);
Clicked?.Invoke(this, new RotarySelectorItemEventArgs { Item = selected });
};
}
public RotarySelectorItem SelectedItem
{
get
{
IntPtr selectedPtr = Interop.Eext.eext_rotary_selector_selected_item_get(this);
if (selectedPtr == IntPtr.Zero) return null;
RotarySelectorItem item = Items.FirstOrDefault(i => i.Handle == selectedPtr);
return item;
}
set
{
if (!Items.Contains(value)) return;
Interop.Eext.eext_rotary_selector_selected_item_set(this, value.Handle);
}
}
void setPart(ref Image prop, string partName, State state, Image img)
{
if (prop == img) return;
prop = img;
if (this != null)
{
Interop.Eext.eext_rotary_selector_part_content_set(this, partName, (int)state, prop);
}
}
void setPart(ref Color prop, string partName, State state, Color color)
{
if (prop == color) return;
if (this != null)
{
Interop.Eext.eext_rotary_selector_part_color_set(this, partName, (int)state, color.R, color.G, color.B, color.A);
}
}
public Image BackgroundImage { set => setPart(ref _normalBgImage, BgPartName, State.Normal, value); get => _normalBgImage; }
protected override IntPtr CreateHandle(EvasObject parent)
{
IntPtr ptr = Interop.Eext.eext_rotary_selector_add(parent);
Interop.Eext.eext_rotary_object_event_activated_set(ptr, true);
return ptr;
}
internal enum State
{
Normal,
Pressed
}
}
}
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