[lvgl] Final stage (#7184)

Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>

esphome/components/lvgl/binary_sensor/__init__.py

@@ -0,0 +1,43 @@
+import esphome.codegen as cg
+from esphome.components.binary_sensor import (
+    BinarySensor,
+    binary_sensor_schema,
+    new_binary_sensor,
+)
+import esphome.config_validation as cv
+
+from ..defines import CONF_LVGL_ID, CONF_WIDGET
+from ..lvcode import EVENT_ARG, LambdaContext, LvContext
+from ..schemas import LVGL_SCHEMA
+from ..types import LV_EVENT, lv_pseudo_button_t
+from ..widgets import Widget, get_widgets
+
+CONFIG_SCHEMA = (
+    binary_sensor_schema(BinarySensor)
+    .extend(LVGL_SCHEMA)
+    .extend(
+        {
+            cv.Required(CONF_WIDGET): cv.use_id(lv_pseudo_button_t),
+        }
+    )
+)
+
+
+async def to_code(config):
+    sensor = await new_binary_sensor(config)
+    paren = await cg.get_variable(config[CONF_LVGL_ID])
+    widget = await get_widgets(config, CONF_WIDGET)
+    widget = widget[0]
+    assert isinstance(widget, Widget)
+    async with LambdaContext(EVENT_ARG) as pressed_ctx:
+        pressed_ctx.add(sensor.publish_state(widget.is_pressed()))
+    async with LvContext(paren) as ctx:
+        ctx.add(sensor.publish_initial_state(widget.is_pressed()))
+        ctx.add(
+            paren.add_event_cb(
+                widget.obj,
+                await pressed_ctx.get_lambda(),
+                LV_EVENT.PRESSING,
+                LV_EVENT.RELEASED,
+            )
+        )