src/ElmSharp.Wearable/ElmSharp.Wearable/RotarySelector.cs

   1 using System;
   2 using System.Collections.Generic;
   3 using System.Linq;
   4 using System.Text;
   5
   6 namespace ElmSharp.Wearable
   7 {
   8     public class RotarySelector : Layout
   9     {
  10         const string IconPartName = "selector,icon";
  11         const string ContentPartName = "selector,content";
  12         const string BgPartName = "selector,bg_image";
  13
  14         const string ItemSelectedEventName = "item,selected";
  15         const string ItemClickedEventName = "item,clicked";
  16
  17         public event EventHandler<RotarySelectorItemEventArgs> Selected;
  18         public event EventHandler<RotarySelectorItemEventArgs> Clicked;
  19
  20         SmartEvent<PointerEventArgs> _selectedEvent;
  21         SmartEvent<PointerEventArgs> _clickedEvent;
  22         Image _normalBgImage;
  23
  24         public IList<RotarySelectorItem> Items { get; private set; }
  25
  26         public RotarySelector(EvasObject parent) : base(parent)
  27         {
  28             Items = new RotarySelectorList(this);
  29
  30             _selectedEvent = new SmartEvent<PointerEventArgs>(this, "item,selected", (d, o, info) => new PointerEventArgs { Pointer = info });
  31             _clickedEvent = new SmartEvent<PointerEventArgs>(this, "item,clicked", (d, o, info) => new PointerEventArgs { Pointer = info });
  32             _selectedEvent.On += (s, e) =>
  33             {
  34                 RotarySelectorItem selected = Items.FirstOrDefault(i => i.Handle == e.Pointer);
  35                 Selected?.Invoke(this, new RotarySelectorItemEventArgs { Item = selected });
  36             };
  37
  38             _clickedEvent.On += (s, e) =>
  39             {
  40                 RotarySelectorItem selected = Items.FirstOrDefault(i => i.Handle == e.Pointer);
  41                 Clicked?.Invoke(this, new RotarySelectorItemEventArgs { Item = selected });
  42             };
  43         }
  44
  45         public RotarySelectorItem SelectedItem
  46         {
  47             get
  48             {
  49                 IntPtr selectedPtr = Interop.Eext.eext_rotary_selector_selected_item_get(this);
  50                 if (selectedPtr == IntPtr.Zero) return null;
  51                 RotarySelectorItem item = Items.FirstOrDefault(i => i.Handle == selectedPtr);
  52                 return item;
  53             }
  54
  55             set
  56             {
  57                 if (!Items.Contains(value)) return;
  58                 Interop.Eext.eext_rotary_selector_selected_item_set(this, value.Handle);
  59             }
  60         }
  61
  62         void setPart(ref Image prop, string partName, State state, Image img)
  63         {
  64             if (prop == img) return;
  65             prop = img;
  66             if (this != null)
  67             {
  68                 Interop.Eext.eext_rotary_selector_part_content_set(this, partName, (int)state, prop);
  69             }
  70         }
  71         void setPart(ref Color prop, string partName, State state, Color color)
  72         {
  73             if (prop == color) return;
  74             if (this != null)
  75             {
  76                 Interop.Eext.eext_rotary_selector_part_color_set(this, partName, (int)state, color.R, color.G, color.B, color.A);
  77             }
  78         }
  79
  80         public Image BackgroundImage { set => setPart(ref _normalBgImage, BgPartName, State.Normal, value); get => _normalBgImage; }
  81
  82         protected override IntPtr CreateHandle(EvasObject parent)
  83         {
  84             IntPtr ptr = Interop.Eext.eext_rotary_selector_add(parent);
  85             Interop.Eext.eext_rotary_object_event_activated_set(ptr, true);
  86             return ptr;
  87         }
  88
  89         internal enum State
  90         {
  91             Normal,
  92             Pressed
  93         }
  94     }
  95 }