Need help with Lua (if, elseif)

[Alex Becherer]

this is what i am currently doing:

Unbenannt-1.png

i display several pictures. i use a second image for each to display a border behind them. as the images have different aspect ratios i let them have a fixed height, get the width with a lua script and adjust the with of the image with the border.

Code: Select all

[Rainmeter]
Author=Alex Becherer
AppVersion=2003000
Update=1000
BackgroundMode=1

[Variables]
@Include="#ROOTCONFIGPATH#SETTINGS\variables.inc"

[MeasureGallery1]
Measure=Plugin
Plugin=Plugins\QuotePlugin.dll
PathName="#GalleryPath#"
FileFilter=*.jpg;*.jpeg;*.gif;*.bmp
Subfolders=1
UpdateDivider=300

[MeasureGallery2]
Measure=Plugin
Plugin=Plugins\QuotePlugin.dll
PathName="#GalleryPath#"
FileFilter=*.jpg;*.jpeg;*.gif;*.bmp
Subfolders=1
UpdateDivider=300

[MeasureGallery3]
Measure=Plugin
Plugin=Plugins\QuotePlugin.dll
PathName="#GalleryPath#"
FileFilter=*.jpg;*.jpeg;*.gif;*.bmp
Subfolders=1
UpdateDivider=300

[MeasureGallery4]
Measure=Plugin
Plugin=Plugins\QuotePlugin.dll
PathName="#GalleryPath#"
FileFilter=*.jpg;*.jpeg;*.gif;*.bmp
Subfolders=1
UpdateDivider=300

[MeasureLuaScript]
Measure=Script
ScriptFile=gallery.lua



[MeterBack]
Meter=Image
ImageName=back.png
X=0
Y=0
Hidden=0

[MeterImageBack3]
Meter=Image
ImageName=photo.png
X=83
Y=38
H=96
W=96
Antialias=1
ScaleMargins=10,10,15,15

[MeterImage3]
Meter=Image
MeasureName=MeasureGallery3
X=90
Y=45
Antialias=1
PreserveAspectRatio=1
H=80

[MeterImageBack1]
Meter=Image
ImageName=photo.png
X=23
Y=18
H=96
W=96
Antialias=1
ScaleMargins=10,10,15,15

[MeterImage1]
Meter=Image
MeasureName=MeasureGallery1
X=30
Y=25
Antialias=1
PreserveAspectRatio=1
H=80


[MeterImageBack4]
Meter=Image
ImageName=photo.png
X=46
Y=148
H=96
W=96
Antialias=1
ScaleMargins=10,10,15,15

[MeterImage4]
Meter=Image
MeasureName=MeasureGallery4
X=53
Y=155
Antialias=1
PreserveAspectRatio=1
H=80

[MeterImageBack2]
Meter=Image
ImageName=photo.png
X=93
Y=93
H=96
W=96
Antialias=1
ScaleMargins=10,10,15,15

[MeterImage2]
Meter=Image
MeasureName=MeasureGallery2
X=100
Y=100
Antialias=1
PreserveAspectRatio=1
H=80

Code: Select all

function Update()

	Meter = SKIN:GetMeter('MeterImage1')
	Width = Meter:GetW()
        NewWidth = Width +14
	SKIN:Bang('!SetOption', 'MeterImageBack1', 'W', NewWidth)
	
	
	Meter = SKIN:GetMeter('MeterImage2')
	Width = Meter:GetW()
        NewWidth = Width +14
	SKIN:Bang('!SetOption', 'MeterImageBack2', 'W', NewWidth)
	
	Meter = SKIN:GetMeter('MeterImage3')
	Width = Meter:GetW()
        NewWidth = Width +14
	SKIN:Bang('!SetOption', 'MeterImageBack3', 'W', NewWidth)
	
		
	Meter = SKIN:GetMeter('MeterImage4')
	Width = Meter:GetW()
        NewWidth = Width +14
	SKIN:Bang('!SetOption', 'MeterImageBack4', 'W', NewWidth)
    

end

this is all nice with images taken in landscape mode. but images in portrait mode are of course far to small.

i wonder would it be possible to execute different actions depending on the width of a meter. lets say if the width is higher than 80 just proceed as it does now, but if it is smaller then do something different?

[KreAch3R]

I haven't tested it, but try this:

Code: Select all

function Update()

	for i = 1, 4 do
   Meter = SKIN:GetMeter('MeterImage'..i)
   Width = Meter:GetW()
	   if Width > 80 then
			NewWidth = Width +14
			SKIN:Bang('!SetOption', 'MeterImageBack'..i, 'W', NewWidth)
		elseif 
			DO THINGS HERE
		end
	end


end

I simplified your code a bit, you didn't need to have that part copied 4 times, you can use a for loop.

[smurfier]

Let's add some "local" variables for very minor performance reasons, and test for true Landscape and Portrait modes.

Code: Select all

function Update()

	for i = 1, 4 do
		local Meter = SKIN:GetMeter('MeterImage'..i)
		local Width = Meter:GetW()
		local Height = Meter:GetH()
		if Width > Height then -- Landscape Mode
			local NewWidth = Width +14
			SKIN:Bang('!SetOption', 'MeterImageBack'..i, 'W', NewWidth)
		elseif Height > Width then -- Portrait Mode
			DO THINGS HERE
		else -- It's a Square
			Do Something Else
		end
	end


end

[Alex Becherer]

thanks a lot!
that works.

[jsmorley]

This should all be worked up into a "Tips & Tricks" post.