lib/m5ui: M5Base add API for setting line color and opa.

Signed-off-by: tinyu <tinyu@m5stack.com>

Author: Tinyu-Zhao

m5stack/libs/m5ui/base.py

@@ -73,6 +73,22 @@ def set_text_color(self, color: int, opa: int, part: int) -> None:
  time.sleep(0.01)
  self.set_style_text_opa(opa, part)
 
+ @staticmethod
+ def set_line_color(self, color: int, opa: int, part: int) -> None:
+ """Set the line color and opacity for a given part of the object.
+
+ :param int color: The color to set, can be an integer (hex) or a lv.color object.
+ :param int opa: The opacity level (0-255).
+ :param int part: The part of the object to apply the style to (e.g., lv.PART.MAIN).
+ :return: None
+ """
+ if isinstance(color, int):
+ color = lv.color_hex(color)
+
+ self.set_style_line_color(color, part)
+ time.sleep(0.01)
+ self.set_style_line_opa(opa, part)
+
  @staticmethod
  def set_bg_color(self, color: int, opa: int, part: int) -> None:
  """Set the background color and opacity for a given part of the object.

m5stack/libs/m5ui/line.py

@@ -45,7 +45,7 @@ def __init__(
  super().__init__(parent)
 
  self.set_points(points)
- self.set_line_color(color, 255)
+ self.set_line_color(color, 255, lv.PART.MAIN)
  self.set_style_line_width(width, lv.PART.MAIN)
  self.set_style_line_rounded(rounded, lv.PART.MAIN)