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This tutorial describes how to prevent the
Enlightenment (E16) window manager
from intercepting mouse events needed by Pipeline. Normally, all mouse events
generated while holding down the ALT key anywhere over a window are used by
Enlightenment to invoke window move, resize and other window manager operations.
This makes it impossible to zoom and pan in Pipeline's Node Viewer and Job Viewer.
It also interfers with using the popup menus in Pipeline which require the ALT
modifier when running Enlightenment. The problem isn't limited to Pipeline since
these ALT+MOUSE events are also commonly used in other 3D software, including Maya
and Houdini, for performing viewer and graph manipulation.
Luckily, its pretty easy to disable this undesirable behavior by commenting out a
section of one of Enlightenment's configuration files. The configuration file
which needs to be edited is normally located here:
/usr/share/enlightenment/config/keybindings.cfg
This location may vary depending on your Enlightenment installation, but the file
name will always be "keybindings.cfg". This edit should be done by a system
administrator since you will need to be root to edit this file. Open it in your
favorite text editor and look for this section near the start of the file:
/*
* Global button bindings... specially named actionclass that applies to
* all client windows - so you can bind "alt - left click" to move the
* window, raise it or something....
*/
__ACLASS __BGN
__NAME BUTTONBINDINGS
__TYPE __TYPE_NORMAL
__EVENT __MOUSE_PRESS
__BUTTON 1
__MODIFIER_KEY __ALT
__ACTION __A_MOVE
__NEXT_ACTION
__EVENT __MOUSE_PRESS
__BUTTON 1
__MODIFIER_KEY __ALT_SHIFT
__ACTION __A_SWAPMOVE
__NEXT_ACTION
__EVENT __DOUBLE_CLICK
__BUTTON 1
__MODIFIER_KEY __ALT
__ACTION __A_SHADE
__NEXT_ACTION
__EVENT __MOUSE_PRESS
__BUTTON 2
__MODIFIER_KEY __ALT
__ACTION __A_RESIZE
__NEXT_ACTION
__EVENT __DOUBLE_CLICK
__BUTTON 2
__MODIFIER_KEY __ALT
__ACTION __A_MAX_HEIGHT available
__NEXT_ACTION
__EVENT __MOUSE_PRESS
__BUTTON 3
__MODIFIER_KEY __ALT
__ACTION __A_SHOW_MENU "named WINOPS_MENU"
__END
...
Simply comment out this entire section using C-style commenting, like so:
/*
* Global button bindings... specially named actionclass that applies to
* all client windows - so you can bind "alt - left click" to move the
* window, raise it or something....
*/
/*
__ACLASS __BGN
__NAME BUTTONBINDINGS
__TYPE __TYPE_NORMAL
__EVENT __MOUSE_PRESS
__BUTTON 1
__MODIFIER_KEY __ALT
__ACTION __A_MOVE
__NEXT_ACTION
__EVENT __MOUSE_PRESS
__BUTTON 1
__MODIFIER_KEY __ALT_SHIFT
__ACTION __A_SWAPMOVE
__NEXT_ACTION
__EVENT __DOUBLE_CLICK
__BUTTON 1
__MODIFIER_KEY __ALT
__ACTION __A_SHADE
__NEXT_ACTION
__EVENT __MOUSE_PRESS
__BUTTON 2
__MODIFIER_KEY __ALT
__ACTION __A_RESIZE
__NEXT_ACTION
__EVENT __DOUBLE_CLICK
__BUTTON 2
__MODIFIER_KEY __ALT
__ACTION __A_MAX_HEIGHT available
__NEXT_ACTION
__EVENT __MOUSE_PRESS
__BUTTON 3
__MODIFIER_KEY __ALT
__ACTION __A_SHOW_MENU "named WINOPS_MENU"
__END
*/
...
Save the file and restart Enlightment. You should now be able to use the ALT
modifier to zoom and pan in Pipeline.
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