Iocane: poison the rodent (simulate X11 mouse events from keyboard)

Iocane: the colorless, oderless, tasteless poision that will rid your system of its rodent infestation. Though no promises about its effectiveness against Rodents Of Unusual Size.
Iocane simulates mouse events from the keyboard. Iocane can be passed a few parameters which - ideally - could each have a key binding in your favorite window manager.
If iocane is called with no parameters it starts in interactive mode (which currently lacks documentation ... hey, I just wrote this this morning). In interactive mode the directional arrows or h/j/k/l keys move the mouse cursor. The number keys simulate button presses (1 = left button, 2 = middle, 3 = right). The page up and page down keys simulate mouse wheel activation. "q" quits from interactive mode returning any grabbed keys to their normal behavior. Key bindings are all controlled from a simple rc file.
Iocane can also be passed a series of commands on the command line or the filename for a script file with a list of iocane commands. Iocane can also read command from its standard input.
Iocane is conceptually similar to some functions of xdotool, but iocane should work under any window manager (or no wm at all), is much smaller, and the interactive mode allows for a sequence of many actions without the program having to start up and close down many times in rapid succession.
Please report bugs or feature requests here. Iocane is currently 127 lines of C, and it will remain small; in other words, features will only be added if the can be added without substantially increasing resource use.
EDIT: Version 0.2 is now in the AUR
Last edited by Trilby (2012-11-03 02:23:15)

Any arbitrary number of buttons should be easy enough to simulate - provided the Xserver actually responds to events with that button number. An update I'll push to github tomorrow will include a few changes, including buttons 1-9, but if there is need/desire I could increase that. Sticking to 1-9 allows for the computationally cheaper hack of converting a string to a number by simple substracting 48 from the value of the first character; numbers greater than 9 would require the use of atoi() or some funky conditionals. In the grand scheme of things this is fairly trivial, but unless there is a real reason to use more than 9 mouse buttons I'd prefer to keep the lighter code.
Passing a window name and getting it's coordinates is possible but after considering it I've decided it wouldn't fit well in iocane. The reason being that to do a half-arsed job of it would be pretty easy. To do it properly, however, it would take quite a bit of scanning through recursive calls to XQueryTree, polling atoms/wmhints, matching strings, checking for subwindows in the case of reparenting window managers, and a bunch of other nonsense ... all to get two coordinates.
However iocane will play nicely with any tool that will provide those coordinates from a given window name, so I can imagine and invocation such as the following to move the mouse 10 pixels right and down from the top left of a window - lets call it FlamingSquirrel - and simulate a click there:
iocane $(cool_app FlamingSquirrel) : move 10 10 : button 1
Currently that could only be done from a command line invocation, not from a script or interactive session, as it requires shell processing for the command substitution. I can add support for this type of invocation in scripts and interactive mode as well. Then all you need to do is find (or write) a program that will give coordinates for a window given a title/name. I suspect such a program probably exists out there, or if you are comfortable with C, I could give you the starting framework for it as I made something that would have much code in common for another task on these forums (it's in jumpstart.c in the "misc" repo on my github).
In fact, you could use the following
xdotool mousemove --window FlamingSquirrel 0 0 && iocane offset 10 10 : button 1
Though if you are using xdotool anyways, I'm not sure if iocane would serve much of a purpose, unless you just prefer iocane's syntax.
Last edited by Trilby (2012-11-01 00:21:14)

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Hi
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public class TableEditor extends JPanel
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�
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��
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