Key sequence in ruby

Pixero

How do I use a sequence of keys in ruby?
I've tried with:
if (key == 18 && key == 38) # Alt and Up Arrow
and:
if (ALT_MODIFIER_KEY && key == 38)
and:
if (key == ALT_MODIFIER_KEY && key == 38)

RickW

In a tool, when you define onKeyDown, it has a bunch of parameters:
def onKeyDown(key, repeat, flags, view)

The "flags" parameter will be a numerical value representing various events or combinations of events. The values are bit-coded and can be added for combined events:
1 - Left MB
2 - Right MB
4 - SHIFT key
8 - CTRL key
16 - ???
32 - ALT key

So, CTRL+SHIFT+ALT would be a flag value of 44 (8+4+32)

In your example, then, you want to check if flags==32 and key==38

Pixero

Thanks for your help, but it still won't work for me.
Here is what I've done (a bit shorter than the real code):

def onKeyDown(key, repeat, flags, view)
 if (flags == 32 && key == 38) # Alt + Up
  dist = Geom;;Point3d.new [0, 0, 100]; 
 end #if

# Now move it	
tr = Geom;;Transformation.new (dist);
Sketchup.active_model.entities.transform_entities(tr, e);		
    
end # onKeyDown

todd burch

In my nudge script, I check for either the Shift Key or the Control key. I use the onKeyDown and onKeyUp methods to test for either key. When either key is pressed, I set a corresponding true toggle for that key. When it's raised, I set the toggle back to false.

Finally, when I'm looking for the arrow keys, I test for true for either toggle and adjust the move distance accordingly. For instance, SHIFT+any arrow key is a 10X movement in distance.

Todd

Pixero

Thanks I'll try that.

todd burch

Yeah, in the onKeyDown method, the keys are not OR'ed.

You'll figure it out. Again, I recommend adding a "puts" statement as the first instruction in your methods to show the key code and you'll what see gets passed when.

Todd

Pixero

YES! That worked!!!!

Thanks a lot.

As a side note. Do you have the keycodes for Mac?
On my laptop (Windows) the keycodes are:
up = 38
left = 37
right = 39
down = 40
alt = 18
shift = 16
ctrl = 17

todd burch

Ignore any logic you see - this is from an old copy of a script. They keycodes are good though, for both Panther and Tiger, and I suspect they will be the same for Leopard too.

BTW, in OS X "Tiger" 10.4.10, the RUBY_PLATFORM constant is "fat-darwin8.8.0". If you check for "darwin" that should be good enough, thru Tiger anyways.

Todd


if !defined? KNUDGEOK then 
  if RUBY_PLATFORM == "i386-mswin32" then                 # Win XP  
    KALXMINUS = 37          # Arrow Left Key 
    KARXPLUS  = 39          # Arrow Right Key 
    KAUYPLUS  = 38          # Arrow Up Key 
    KADYMINUS = 40          # Arrow Down Key 
    KLTZDOWN  = 188         # (comma) Less Than Key 
    KGTZUP    = 190         # (period) Greater Than Key 
    KSHIFT    = 16          # Shift Key 
    KCONTROL  = 17          # Control Key 
    KNUDGEOK = true ; 
  elsif RUBY_PLATFORM == "powerpc-darwin" then            # Mac OSX Panther 
    KALXMINUS = 63234       # Arrow Left Key 
    KARXPLUS  = 63235       # Arrow Right Key 
    KAUYPLUS  = 63232       # Arrow Up Key 
    KADYMINUS = 63233       # Arrow Down Key 
    KLTZDOWN  = 44          # (comma) Less Than Key 
    KGTZUP    = 46          # (period) Greater Than Key 
    KSHIFT    = 131072      # Shift Key 
    KCONTROL  = 262144      # Control Key 
    KNUDGEOK = true ; 
  else 
    KPLATFORM = "?" 
    end 
  end ;

Pixero

Again, thanks.
The only one missing is the Alt key.

todd burch

Oops.

Command = 1048576
Alt = 524288
Control = 262144

The Command key, also known as the "apple" key, shown as a ⌘ in the Doc, is the Mac equivalent to the PC's CONTROL key. The control key on a Mac isn't used that often.

The ALT key is also named the Option key.

Todd