From d0958f7cf28dd68e7149ae32d06b3489caf55c11 Mon Sep 17 00:00:00 2001
From: Clyde Stubbs <2366188+clydebarrow@users.noreply.github.com>
Date: Tue, 3 Dec 2024 17:50:11 +1100
Subject: [PATCH] [lvgl] Bugfixes (#7896)

---
 esphome/components/lvgl/defines.py      | 2 +-
 esphome/components/lvgl/lvgl_esphome.h  | 3 +++
 esphome/components/lvgl/widgets/line.py | 6 ++++++
 tests/components/lvgl/lvgl-package.yaml | 4 ++--
 4 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/esphome/components/lvgl/defines.py b/esphome/components/lvgl/defines.py
index ea345fa55c..bb7d25c2c7 100644
--- a/esphome/components/lvgl/defines.py
+++ b/esphome/components/lvgl/defines.py
@@ -38,7 +38,7 @@ def literal(arg):
 def call_lambda(lamb: LambdaExpression):
     expr = lamb.content.strip()
     if expr.startswith("return") and expr.endswith(";"):
-        return expr[7:][:-1]
+        return expr[6:][:-1].strip()
     return f"{lamb}()"
 
 
diff --git a/esphome/components/lvgl/lvgl_esphome.h b/esphome/components/lvgl/lvgl_esphome.h
index 208cb1cbd5..7bc6b00cf5 100644
--- a/esphome/components/lvgl/lvgl_esphome.h
+++ b/esphome/components/lvgl/lvgl_esphome.h
@@ -56,6 +56,9 @@ static const display::ColorBitness LV_BITNESS = display::ColorBitness::COLOR_BIT
 inline void lv_img_set_src(lv_obj_t *obj, esphome::image::Image *image) {
   lv_img_set_src(obj, image->get_lv_img_dsc());
 }
+inline void lv_disp_set_bg_image(lv_disp_t *disp, esphome::image::Image *image) {
+  lv_disp_set_bg_image(disp, image->get_lv_img_dsc());
+}
 #endif  // USE_LVGL_IMAGE
 
 // Parent class for things that wrap an LVGL object
diff --git a/esphome/components/lvgl/widgets/line.py b/esphome/components/lvgl/widgets/line.py
index 548dfa8452..0156fb1780 100644
--- a/esphome/components/lvgl/widgets/line.py
+++ b/esphome/components/lvgl/widgets/line.py
@@ -35,6 +35,11 @@ LINE_SCHEMA = {
     cv.GenerateID(CONF_POINT_LIST_ID): cv.declare_id(lv_point_t),
 }
 
+LINE_MODIFY_SCHEMA = {
+    cv.Optional(CONF_POINTS): cv_point_list,
+    cv.GenerateID(CONF_POINT_LIST_ID): cv.declare_id(lv_point_t),
+}
+
 
 class LineType(WidgetType):
     def __init__(self):
@@ -43,6 +48,7 @@ class LineType(WidgetType):
             LvType("lv_line_t"),
             (CONF_MAIN,),
             LINE_SCHEMA,
+            modify_schema=LINE_MODIFY_SCHEMA,
         )
 
     async def to_code(self, w: Widget, config):
diff --git a/tests/components/lvgl/lvgl-package.yaml b/tests/components/lvgl/lvgl-package.yaml
index db0443b3bb..b83ff2a3d5 100644
--- a/tests/components/lvgl/lvgl-package.yaml
+++ b/tests/components/lvgl/lvgl-package.yaml
@@ -333,7 +333,7 @@ lvgl:
             id: button_button
             width: 20%
             height: 10%
-            transform_angle: !lambda return 180*100;
+            transform_angle: !lambda return(180*100);
             arc_width: !lambda return 4;
             border_width: !lambda return 6;
             shadow_ofs_x: !lambda return 6;
@@ -577,7 +577,7 @@ lvgl:
               - 180, 60
               - 240, 10
             on_click:
-              - lvgl.widget.update:
+              - lvgl.line.update:
                   id: lv_line_id
                   line_color: 0xFFFF
               - lvgl.page.next: