compositor

See swaywm/sway#5299 (comment)

The NumberInput widget should support more common ways of modifying numerical widgets, namely:

• Holding down the mouse button on the arrow to change it multiple times. This should probably work like key repeat, with an initial delay and a constant rate of repetition.
• Clicking and dragging on the clickable region of the widget to change the value. The change should either be proporti

This is a very simple shell protocol only allowing for fullscreen surfaces. You can find a very basic implementation here: https://github.com/swaywm/wlroots/blob/master/examples/fullscreen-shell.c

Add ability to mute nodes. In the core this means adding a "bypass" method so that the input image is just passed along to the next node. This is also useful so that node authors can specify that if certain values are reached (e.g: 0 or 100) that the node is "unused" and thus use the bypass to avoid extra (needless) rendering.