[lvgl] Make line points templatable (#8502)

esphome/components/lvgl/schemas.py

@@ -19,7 +19,7 @@ from esphome.core.config import StartupTrigger
 from esphome.schema_extractors import SCHEMA_EXTRACT
 
 from . import defines as df, lv_validation as lvalid
-from .defines import CONF_TIME_FORMAT, LV_GRAD_DIR
+from .defines import CONF_TIME_FORMAT, CONF_X, CONF_Y, LV_GRAD_DIR
 from .helpers import add_lv_use, requires_component, validate_printf
 from .lv_validation import lv_color, lv_font, lv_gradient, lv_image, opacity
 from .lvcode import LvglComponent, lv_event_t_ptr
@@ -87,6 +87,33 @@ ENCODER_SCHEMA = cv.Schema(
     }
 )
 
+
+def point_shorthand(value):
+    """
+    A shorthand for a point in the form of x,y
+    :param value: The value to check
+    :return: The value as a tuple of x,y
+    """
+    if isinstance(value, str):
+        try:
+            x, y = map(int, value.split(","))
+            return {CONF_X: x, CONF_Y: y}
+        except ValueError:
+            pass
+    raise cv.Invalid("Invalid point format, should be <x_value>, <y_value>")
+
+
+POINT_SCHEMA = cv.Any(
+    cv.Schema(
+        {
+            cv.Required(CONF_X): cv.templatable(cv.int_),
+            cv.Required(CONF_Y): cv.templatable(cv.int_),
+        }
+    ),
+    point_shorthand,
+)
+
+
 # All LVGL styles and their validators
 STYLE_PROPS = {
     "align": df.CHILD_ALIGNMENTS.one_of,