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GUI - Button hover change text color (Solved)

Discussion in 'Immediate Mode GUI (IMGUI)' started by DrDecipher, Aug 15, 2014.

  1. DrDecipher

    DrDecipher

    Joined:
    Dec 5, 2012
    Posts:
    54
    This has been driving me nuts. There is a bug in the GUI that prevents .hover and .onHover not working with text on a button. This is how it is worked around.

    Additionally you'll see a simple click and swap texture button another user posted as a solution.
    Note: This code is dynamically creating 10 buttons. That's the reason the Rects are being created on the fly.

    There is a delay on the hover swap that seems to be based on the OnGUI execute speed. If anyone has some thoughts on how to add another change handler,
    like:
    if (GUI.Button(layerVisPos, "", new GUIStyle()))

    for:
    onHover, that would be a welcome find.

    Hope this help some folks that never got their answer to this question.

    Cheers,
    Doc

    Code (CSharp):
    1. void OnGUI()
    2.     {
    3.         for (int i = 0; i < 10; i++)
    4.         {
    5.             // CLICK AND SWAP TEXTURE BUTTON
    6.                 // Button Rect
    7.                 Rect layerVisPos = new Rect(4, i * 26, 26, 26);
    8.  
    9.                 // Button Clicked
    10.                 if (GUI.Button(layerVisPos, "", new GUIStyle()))
    11.                     if (layerVisState)
    12.                         layerVisState = false;
    13.                     else
    14.                         layerVisState = true;
    15.                
    16.                 // Display proper texture
    17.                 if (layerVisState)
    18.                     GUI.DrawTexture(layerVisPos, layerVisOn);
    19.                 else
    20.                     GUI.DrawTexture(layerVisPos, layerVisOff);
    21.  
    22.             // HOVER CHANGE TEXT COLOR BUTTON
    23.                 // Rect
    24.                 layerSelectPos = new Rect(56, (i * 26), position.width - 54, 25);
    25.  
    26.                 //  Detect hover and swap color
    27.                 curEvent = Event.current;
    28.                 if (layerSelectPos.Contains(curEvent.mousePosition))
    29.                     guiButtonStyle.normal.textColor = Color.white;
    30.                 else
    31.                     guiButtonStyle.normal.textColor = Color.black;
    32.  
    33.                 // Hover Text Button
    34.                 GUI.Button(layerSelectPos, "Layer Name", guiButtonStyle);
    35.         }
    36.     }
     
  2. DrDecipher

    DrDecipher

    Joined:
    Dec 5, 2012
    Posts:
    54
    Wha BLAMMM!!

    This will give you a rollover that updates instantly and is only triggered when you are over the window itself.

    Code (CSharp):
    1.   void Update()
    2.     {
    3.         try
    4.         {
    5.             if (mouseOverWindow.GetType() == (typeof(YourWindowEditorClassHere)))
    6.                 Repaint();
    7.         }
    8.         catch { }
    9.     }
    Note: Admittedly I believe try/catch statement to be bad coding, but it exists for just such a situation.
    mouseOverWindow.GetType() can not be compared to null when you are on another monitor(I have a few). It will throw an exception no matter what you test it against.

    Happy Coding,
    Doc