Buttons and alpha

TheSecretSquirrel · 01-15-16, 02:52 PM

How do I change the alpha for a button, if I use... example:SetNormalTexture and then change the alpha to, say 0.5 and the example:SetHighlightTexture to 1 - so that the button becomes more visible when highlighted - If someone could also throw in how to make the button unhide another frame, that would be helpful too

Thanks in advance

Squirrel

MunkDev · 01-15-16, 04:15 PM

:SetNormalTexture, :SetHighlightTexture, etc takes a texture as argument, not the alpha value. If you want to manipulate the alpha values of your button textures, you'll either have to provide your own textures or get the textures from the button object and then change them.

Lua Code:

local normal = button:GetNormalTexture()
normal:SetAlpha(0.5)

If you want to change the button's alpha value when you mouse over it, you should just do something like this:

Lua Code:

button:SetScript("OnEnter", function(self) self:SetAlpha(1) end)
button:SetScript("OnLeave", function(self) self:SetAlpha(0.5) end)

Hiding / showing another frame is simple:

Lua Code:

-- on click
button:SetScript("OnClick", function(self) otherFrame:Show() end)
-- on mouse over
button:SetScript("OnEnter", function(self) otherFrame:Show() end)
button:SetScript("OnLeave", function(self) otherFrame:Hide() end)

TheSecretSquirrel · 01-15-16, 04:23 PM

Thanks so much, was trying to alter the 'wowwiki' guide on buttons (OnClick), but nothing (until now) was working!

TheSecretSquirrel · 01-15-16, 04:40 PM

Another quick question - If I was to click the button again, how would I make the frame hide?

Yukyuk · 01-15-16, 05:11 PM

This is (more or less) my defaulft lua to show/hide a frame.

Code:

-------------------------------------------------------------------------------
--  Toggle the user interface 
-------------------------------------------------------------------------------
function frame_UI()
    if frame:IsVisible() then
       frame:Hide()
    else
       frame:Show()
    end
end

jeruku · 01-15-16, 05:49 PM

Another approach for toggling frame visibility.

Lua Code:

frame:SetShown(not frame:IsVisible())

MunkDev · 01-15-16, 07:27 PM

Someone really ought to make a better guide for beginners to start coding addons. It seems a lot of people turn to outdated sources that promote XML for arbitrary frames and bloating of the global environment.

TheSecretSquirrel · 01-16-16, 04:37 AM

I've tried both suggestions above, neither are working (I'm assuming I'm "plugging" them in wrong).

The code with my button:

Code:

--
local MenuButton = CreateFrame("Button","MenuButton",UIParent)
MenuButton:SetNormalTexture("Interface\\AddOns\\UI\\Textures\\MenuBar.tga")
MenuButton:SetPoint("Bottomleft",0,0)
MenuButton:SetWidth(32)
MenuButton:SetHeight(32)
local MenuButtonNormal = MenuButton:GetNormalTexture() -- Might not need this?
MenuButton:SetScript("OnClick", function(self) MenuBackgroundFrame:Show() end)
MenuButton:SetScript("OnEnter", function(self) self:SetAlpha(1) end)
MenuButton:SetScript("OnLeave", function(self) self:SetAlpha(0.5) end)
--

Never mind - I've fixed it by doing the following:

Code:

--
local MenuButton = CreateFrame("Button","MenuButton",UIParent)
MenuButton:SetNormalTexture("Interface\\AddOns\\UI\\Textures\\MenuBar.tga")
MenuButton:SetPoint("Bottomleft",0,0)
MenuButton:SetWidth(32)
MenuButton:SetHeight(32)
MenuButton:SetScript("OnClick", function(self) if MenuBackgroundFrame:IsVisible() then MenuBackgroundFrame:Hide() else MenuBackgroundFrame:Show() end end)
MenuButton:SetScript("OnEnter", function(self) self:SetAlpha(1) end)
MenuButton:SetScript("OnLeave", function(self) self:SetAlpha(0.5) end)
--