mikshaw
Group: Members
Posts: 4856
Joined: July 2004 |
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Posted: Feb. 09 2007,04:29 |
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Here's a nice collection of Lua code snippets and functions:
http://lua-users.org/wiki/SampleCode
Some work as-is in murgaLua, and some need a little modification. For example, the length_of_file function on the "File Input Output" page uses assert, which crashes murgaLua if the file doesn't exist instead of just giving an error message. I used "if" instead to check if io.open worked:
| Code Sample | function length_of_file(filename)
local fh = io.open(filename, "rb")
if fh then
local len = fh:seek("end")
fh:close()
return len end
end |
The original function was written by Jay Carlson, the creator of Lua-FLTK
If anyone else knows of a good resource for Lua samples, please paste a link here. thanks.
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Here are a couple I did yesterday while working on another project (murgaLua only):
-- Returns a hex value from the given widget's color.
-- In the case of redthing:color(fltk.FL_RED)
-- hexcolor(redthing) returns #FF0000
| Code Sample | function hexcolor(widget)
local r,g,b=Fl:get_color(widget:color(),r,g,b);
local hex=string.format("#%.2X%.2X%.2X",r,g,b);
return hex
end |
-- An alternative to the above, which uses a color index (0-255) as
-- an argument. You can plug in any FLTK color rather than rely on
-- a specific widget's base color. Numbers above 255 will work, but
-- I couldn't tell you what rgb values they represent =o)
| Code Sample | function hexcolor2(num)
local r,g,b=Fl:get_color(num,r,g,b);
local hex=string.format("#%.2X%.2X%.2X",r,g,b);
return hex
end |
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http://www.tldp.org/LDP/intro-linux/html/index.html
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