Need help understanding configuration of press & release events

[rightpad]

Hello, I'm trying to bind my mouse back & forward buttons to left ctrl & left shift respectively. I want it where holding down the mouse button acts as holding down the corresponding modifier key, and vice-versa when released. I'm testing with wev, and my config currently sends the right inputs, but only on release rather than when held down. For example: I press and hold the mouse back button, and both leftctrl keyboard events don't get sent until after I release the button. I was wondering if I could be pointed in the right direction on how to fix this so that the events properly match.

mouse:
  gestures:
    - type: press
      mouse_buttons: [ back ]

      actions:
        - input:
          - on: begin
          - keyboard: [ +leftctrl ]
        - input:
          - on: end_cancel
          - keyboard: [ -leftctrl ]

    - type: press
      mouse_buttons: [ forward ]

      actions:
        - input:
          - on: begin
          - keyboard: [ +leftshift ]
        - input:
          - on: end_cancel
          - keyboard: [ -leftshift ]

[taj-ny]

on and input should be set on the same node like this:

- on: begin
  input:
    - keyboard: [ +leftctrl ]

Since you're binding buttons to modifiers, you will probably run into one of the current limitations of this tool:

• Press triggers are cancelled on motion (let me know if it's this one since it's easy to fix)
• Only one trigger may be active at a time for a given device

[rightpad]

Thank you, that configuration change does make the key behave as expected. Here are the limitations I encountered:

• Motion does indeed cancel the trigger
• Trigger is canceled after one key entry. Example: using the sample configuration, bind a mouse button to shift and then press any key repeatedly in a text area. Only the first letter is capitalized, and the trigger ends (despite the mouse button still being held down).

Sample config:

mouse:
  gestures:
    - type: press
      mouse_buttons: [ forward ]

      actions:
        - on: begin
          input:
            - keyboard: [ +leftshift ]
        - on: end_cancel
          input:
            - keyboard: [ -leftshift ]

I can provide wev logs if they are useful