I am making a custom panel for a rig and I would like to be able to easily insert keyframes on my rig properties the same way we can already do in the default properties panel.

I'd basically like to add these buttons:

enter image description here

As you can see, I already tried to implement them but I can't get them to work properly:

enter image description here

Q: How to implement/draw these buttons for custom properties?


UILayout.use_property_split and UILayout.use_property_decorate

Setting UILayout.use_property_split in conjunction with UILayout.use_property_decorate to True, marks down the animation button. (Currently not over-documented) My understanding is the split makes room for it, and the decorate draws it.

enter image description here

With developer extras on, right click > view source. Found this in bl_ui.properties_space.py giving a big hint

    layout.use_property_decorate = False  # No animation.

Quick demo with object location, using the Text Editor > Templates > Python > UI Simple Panel template

import bpy

class HelloWorldPanel(bpy.types.Panel):
    """Creates a Panel in the Object properties window"""
    bl_label = "Hello World Panel"
    bl_idname = "OBJECT_PT_hello"
    bl_space_type = 'PROPERTIES'
    bl_region_type = 'WINDOW'
    bl_context = "object"

    def draw(self, context):
        layout = self.layout
        layout.use_property_split = True
        layout.use_property_decorate = True
        obj = context.object

        col = layout.column()
        col.prop(obj, "location")

def register():

def unregister():

if __name__ == "__main__":
  • $\begingroup$ Omg, Thank you, that worked brilliantly ! Just a little question, what is "developer extras" ? is it something we can enable in user preferences or something that is already in Blender (that I didn't know the name of) ? $\endgroup$ – azagwen Dec 22 '19 at 5:44
  • 1
    $\begingroup$ @azagwen Yes, in setting panel, interface $\endgroup$ – HikariTW Dec 22 '19 at 7:16
  • $\begingroup$ Might be cool having a demo for multiple properties and how to set this up for only one of them. $\endgroup$ – brockmann Dec 22 '19 at 15:31
  • $\begingroup$ @brockmann Almost did... then didn't. Surprised the answer hasn''t attracted much interest. Find it a handy little button. $\endgroup$ – batFINGER Dec 23 '19 at 16:03
  • $\begingroup$ Time will come, I think add-on dev's still busy replacing all the assignments with annotations :) No big deal, it's your answer @batFINGER $\endgroup$ – brockmann Dec 23 '19 at 23:31

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