Changes to UIPanel alpha do not affect alpha of UIInput caret/selection

[wizardsmoke]

I came across this issue when I selected an input field on a panel with alpha = 0 and then tweened the panel's alpha to 1.  The cursor was invisible until the next call to UIInput.UpdateLabel(), which is not called until the user either starts typing or manually reselects the input field.  This is confusing to the user because they are not aware that the input field is selected.

[wizardsmoke]

I added a hack workaround to UIInput.Update(), but it would be nice if this were fixed in an NGUI update.  Pretty please  .  Here's my workaround:

1. void Update ()
2.         {
3. #if UNITY_EDITOR
4.                 if (!Application.isPlaying) return;
5. #endif
6.                 if (isSelected)
7.                 {
8.                         if (mDoInit) Init();
9.  
10.                         if (selectOnTab != null && Input.GetKeyDown(KeyCode.Tab))
11.                         {
12.                                 UICamera.selectedObject = selectOnTab;
13.                                 return;
14.                         }
15.  
16.                         // Process input ignoring non-printable characters as they are not consistent.
17.                         // Windows has them, OSX may not. They get handled inside OnGUI() instead.
18.                         string s = Input.inputString;
19.                        
20.                         if (!string.IsNullOrEmpty(s))
21.                         {
22.                                 for (int i = 0; i < s.Length; ++i)
23.                                 {
24.                                         char ch = s[i];
25.                                         if (ch >= ' ') Insert(ch.ToString());
26.                                 }
27.                         }
28.  
29.                         // Append IME composition
30.             if (mLastIME != Input.compositionString)
31.             {
32.                 mLastIME = Input.compositionString;
33.                 UpdateLabel();
34.                 ExecuteOnChange();
35.             }
36.             ///WORKAROUND////////
37.             else
38.             {
39.                 bool caretEnabled = false;
40.                 float nextBlink = mNextBlink;
41.  
42.                 if (mCaret != null)
43.                 {
44.                     caretEnabled = mCaret.enabled;
45.                 }
46.  
47.                 UpdateLabel();
48.  
49.                 mNextBlink = nextBlink;
50.  
51.                 if (mCaret != null)
52.                 {
53.                     mCaret.enabled = caretEnabled;
54.                 }
55.             }
56.             ///END WORKAROUND/////
57.  
58.                         // Blink the caret
59.                         if (mCaret != null && mNextBlink < RealTime.time)
60.                         {
61.                                 mNextBlink = RealTime.time + 0.5f;
62.                                 mCaret.enabled = !mCaret.enabled;
63.                         }
64.                 }
65.         }
66.  

[ArenMook]

The panel alpha not propagating is one of the fixes in 3.5.0.

[wizardsmoke]

Oh ok, thanks!

[wizardsmoke]

After updating to the latest version of NGUI, the problem persists.

[ArenMook]

Hmm... I'll look into this.

Edit: Found the issue. I fixed it in the Pro repository, so you will see it live in the next update.