Hello All,
I recently started playing with Shoes to learn it during my Ruby
learning journey.
It appears to be easy, although the current doc is not what a beginner
like I would prefer.
googling around I found a nice website,
http://shoes-tutorial-note.heroku.com/, which has some nice simple
samples programs, just what beginners, like I, need.
On my learning, I heavely borrowed from a program, simple-calc.rb,
listed on the tutorial mentioned above. I hope the developer of this
pgm does not get upset.
I have some questions which I would like help with.
First, should I post Shoes questions to shoes@librelist.org or should
my questions go to ruby-talk@ruby-lang.org? or Both?
I am attaching my image so you can analyze it and comment on it.
1 - When placing a number of buttons, such as the ones found in a
calculator, how can I tell Shoes to place them on the center of the
pane, without having to specify margin?
flow :width => "100%", :margin => 58 do
%w(7 8 9 + sin 4 5 6 - cos 1 2 3 * sinh tan cot 0 ln /
cosh Exp log
tanh = Mod n! sqrt x*2 x*y % e Pi Clr Ce).each do |btn|
button btn, :width => 46, :height => 46 do
method = case btn
when /[0-9]/; 'press_'+btn
when '+'; 'press_add'
when '-'; 'press_sub'
when '*'; 'press_times'
when '/'; 'press_div'
when '='; 'press_equals'
ect, etc, etc
end # case
end # button do
end # each do
end # flow
2 - I am using a stack do with nothing inside (between the do and the
end) to keep items within a flow one on top of the other, is there a
different way to do this?
flow :margin => 6 do
radio; para strong("512b BK")
radio; para strong("1K BK")
radio; para strong("MB")
radio; para strong("GB")
radio; para strong("TB")
stack do
# I am using this as a way to stack up groups.
# There might be a much better way!
end
radio; para strong("Deg")
radio; para strong("Rad")
radio; para strong("Grad")
radio; para strong("DEC")
radio; para strong("HEX")
radio; para strong("BIN")
end # flow
3 - I tried to use the Pi symbol and the square root (√) symbol and
other symbols as caption/lable for the corresponding buttons, but I
got an errors or the wrong thing displayed. Is there a way to
accomplish this?
4 - It looks like I can achieve the same function with para and
caption. What is the difference between the two?
5 - How can I reduce the space between flows?
Thank you for your help!
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Ruby Student