Add transition parameter support to light card

[LarsMudde]

Hi everyone,

I have a Qubino Mini Dimmer and it updates very slow because it uses the configured transition time of the button on the wall to transition between states when using HomeAssistant. This means moving the slider from 20 to 80% takes 6 (for the lamp but also for the ui to update).

I've fixed this (after some help) by using an automation and a helper (numeric).

alias: New Automation
description: ''
trigger:
  - platform: state
    entity_id: input_number.qubino_dimmer_brightness_pct
condition: []
action:
  - service: light.turn_on
    data:
      brightness_pct: '{{ states(''input_number.qubino_dimmer_brightness_pct'')|int }}'
      transition: 0
    target:
      entity_id: light.mini_dimmer
mode: restart

This works less well than the light card, and I like the light card better. But there's no way for me to (optionally) feed the transition parameter to the light card. Therefore I'm suggesting we add transition as a parameter on the light card so we can set it for dimmers or other devices that require it.

zwave-js/zwave-js-ui#2226

This might also require back-end changes, I'm not sure.

Regards,

Lars

[LarsMudde]

After looking into this more and pulling the UI, I suspect adding transition: 0 in the hui-light-card.ts might do the trick, it would look something like this:

  private _setBrightness(e: any): void {
    this.hass!.callService("light", "turn_on", {
      entity_id: this._config!.entity,
      brightness_pct: e.detail.value,
      transition: 0
    });
  }

Now I understand that not everyone (or every dimmer) might want/need to have a transition so I'm still working on/looking into making this a parameter that could be entered trough the ui. If I could get any thoughts/opinions on this that'd be great, I appreciate any input.