Modify Background Image Blending

This script demonstrates registering an RPC to adjust the image blending level of the current session. You can bind it to a keystroke by adding a new key binding in Prefs > Keys, selecting the action Invoke Script Function, and giving it the invocation blend_more(session_id: id) or blend_less(session_id: id).

#!/usr/bin/env python3.7

import asyncio
import iterm2

async def main(connection):
    app = await iterm2.async_get_app(connection)
    async def get_profile_for_session(session_id):
        session = app.get_session_by_id(session_id)
        return await session.async_get_profile()

    @iterm2.RPC
    async def blend_more(session_id):
        profile = await get_profile_for_session(session_id)
        await profile.async_set_blend(min(1, profile.blend + 0.1))
    await blend_more.async_register(connection)

    @iterm2.RPC
    async def blend_less(session_id):
        profile = await get_profile_for_session(session_id)
        await profile.async_set_blend(max(0, profile.blend - 0.1))
    await blend_less.async_register(connection)

iterm2.run_forever(main)

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