GUI label SetText,SetColor question

[aiaf]

label_error = Widget::Label(" ", 20, Math::Round(gcon->getContext()->GetWidth() / 9) + 150, 160, 28, gcon->getGui()->GetBase());

label_error->SetText(label_error_connect);

 

How can i clear the text from a label ? After code below i still have the old text printed.SetText draw over the existing text.

if (event.source == button_back) {
    label_error->SetText("");

}

 

And how can i color the label text ? calling SetColor i still have white text

 

[macklebee]

I can't say based on the information why your text is not clearing out properly. Maybe you need to redraw the panel or the label? - not enough info to try to recreate but this simple example seems to work:

window = Window:Create("Label Example",0,0,400,300,Window.Titlebar + Window.Center)
context = Context:Create(window)

gui = GUI:Create(context)
base = gui:GetBase()
base:SetScript("Scripts/GUI/panel.lua")

text1 = "Center with border and vertical align"
text2 = ""

widget = Widget:Label(text1,20,20,300,80,base)
widget:SetString("align","Center")
widget:SetString("valign","Center")
widget:SetBool("border",true)

toggle = 0

while not window:KeyHit(Key.Escape) do
	if window:Closed() then return false end
    
	if window:KeyHit(Key.Space) then
		toggle = 1 - toggle
		if toggle == 1 then 
			widget:SetText(text2)
		else
			widget:SetText(text1)
		end
		widget:Redraw()
	end
    context:Sync()
end

As for color - this seems like its a huge class member missing from the Widget class? Not sure why there isn't a way to set the colors of your widgets or text. The label.lua script has no mention of color. The panel.lua script has color being set but its all hardcoded and I haven't been able to change the colors by accessing the apparent color related members. So unless you decide to start rewriting a lot of the scripts, I am not sure you can change the Widget colors inherently - which just seems to be a fairly large omission? Maybe I am missing something. 

[aiaf]

panel = Widget::Panel (20, Math::Round(gcon->getContext()->GetWidth() / 9), 200, 200, gcon->getGui()->GetBase());
label_error = Widget::Label(" ", 20, 20 + 150, 160, 28, panel);

If there is a panel drawn the label gets updated.So this change got my issue solved.

@Josh maybe can provide us some info on how to set text color in label.

Thanks macklebee

[GorzenDev]

to set a label's text color you would need to either edit the default label.lua or create a custom one.
here is code for a colorLabel:

--Styles
if Style==nil then Style={} end
if Style.Label==nil then Style.Label={} end
Style.Label.Left=0
Style.Label.Center=16
Style.Label.Right=8
Style.Label.VCenter=32

Script.bordercolor = Vec4(0.2,0.2,0.2,1)
Script.textcolor = Vec4(0.7,0.7,0.7,1)

--[[
Const LABEL_LEFT=0
Const LABEL_FRAME=1
Const LABEL_SUNKENFRAME=2
Const LABEL_SEPARATOR=3
Const LABEL_RIGHT=8
Const LABEL_CENTER=16
]]

function Script:Draw(x,y,width,height)
	local gui = self.widget:GetGUI()
	local pos = self.widget:GetPosition(true)
	local sz = self.widget:GetSize(true)
	local scale = gui:GetScale()
	local text = self.widget:GetText()
	local indent=4

	if self.border==true then
		gui:SetColor(self.bordercolor.r, self.bordercolor.g, self.bordercolor.b, self.bordercolor.a)
		gui:DrawRect(pos.x,pos.y,sz.width,sz.height,1)
	end

	
	--gui:SetColor(0.7,0.7,0.7)
	gui:SetColor(self.textcolor.r,self.textcolor.g,self.textcolor.b,self.textcolor.a)
	
	if text~="" then
		local style=0
		if self.align=="Left" then style = Text.Left end
		if self.align=="Center" then style = Text.Center end
		if self.align=="Right" then style = Text.Right end
		if self.valign=="Center" then style = style + Text.VCenter end
		
		if self.wordwrap==true then style = style + Text.WordWrap end
		
		if self.border==true then
			gui:DrawText(text,pos.x+scale*indent,pos.y+scale*indent,sz.width-scale*indent*2,sz.height-scale*indent*2,style)	
		else
			gui:DrawText(text,pos.x,pos.y,sz.width,sz.height,style)	
		end
	end
end

function Script:bitand(set, flag)
	return set % (2*flag) >= flag
end

 

[aiaf]

Thanks for example.

Im hoping there will be a way to set label colors from c++ code.

 

[GorzenDev]

better yet c++ can call functions straight out of the widgetscript.
so create a nice widget script set it to your widget and call functions from c++.
other than that c++ can do exactly the same as lua can when it comes to widgets.


sorry i forgot to add usage for the colorlabel.
use the above colorlabel script like this:

--create a custom widget
colorlabel = Widget:Create("", 100, 100, 250, 12, gui:GetBase(), "Scripts/GUI/ColorLabel.lua")
colorlabel:SetObject("textcolor", Vec4(1.0, 0.0, 0.0, 1.0))