[lvgl] Various fixes (#15098)

esphome/components/lvgl/__init__.py

@@ -226,6 +226,9 @@ async def to_code(configs):
     config_0 = configs[0]
     # Global configuration
     if CORE.is_esp32:
+        # Skip compiling lvgl examples
+        add_idf_sdkconfig_option("CONFIG_LV_BUILD_EXAMPLES", False)
+        add_idf_sdkconfig_option("CONFIG_LV_BUILD_DEMOS", False)
         if get_esp32_variant() == VARIANT_ESP32P4:
             add_idf_sdkconfig_option("CONFIG_LV_DRAW_BUF_ALIGN", 64)
             # disable use of PPA for fills until upstream bugs fixed
@@ -406,7 +409,10 @@ async def to_code(configs):
     lv_conf_h_file = CORE.relative_src_path(LV_CONF_FILENAME)
     write_file_if_changed(lv_conf_h_file, generate_lv_conf_h())
     cg.add_build_flag("-DLV_CONF_H=1")
-    cg.add_build_flag(f'-DLV_CONF_PATH=\\"{LV_CONF_FILENAME}\\"')
+    # handle windows paths in a way that doesn't break the generated C++
+    lv_conf_h_path = Path(lv_conf_h_file).as_posix()
+    cg.add_build_flag(f'-DLV_CONF_PATH=\\"{lv_conf_h_path}\\"')
+    cg.add_build_flag("-DLV_KCONFIG_IGNORE")
 
     for prop in df.get_remapped_uses():
         df.LOGGER.warning(

esphome/components/lvgl/lvgl_esphome.h

@@ -71,7 +71,7 @@ inline void lv_style_set_text_font(lv_style_t *style, const font::Font *font) {
   lv_style_set_text_font(style, font->get_lv_font());
 }
 #endif
-#ifdef USE_IMAGE
+#if defined(USE_LVGL_IMAGE) && defined(USE_IMAGE)
 // Shortcut / overload, so that the source of an image can easily be updated
 // from within a lambda.
 inline void lv_image_set_src(lv_obj_t *obj, esphome::image::Image *image) {

esphome/components/lvgl/widgets/textarea.py

@@ -16,6 +16,7 @@ from ..lv_validation import lv_bool, lv_int, lv_text
 from ..schemas import TEXT_SCHEMA
 from ..types import LvText
 from . import Widget, WidgetType
+from .label import CONF_LABEL
 
 CONF_TEXTAREA = "textarea"
 
@@ -46,6 +47,9 @@ class TextareaType(WidgetType):
             TEXTAREA_SCHEMA,
         )
 
+    def get_uses(self):
+        return (CONF_LABEL,)
+
     async def to_code(self, w: Widget, config: dict):
         for prop in (CONF_TEXT, CONF_PLACEHOLDER_TEXT, CONF_ACCEPTED_CHARS):
             if (value := config.get(prop)) is not None: