From 359c96aacc355fd4e9ca9f17ea7a103907eb391d Mon Sep 17 00:00:00 2001
From: BlueFox <bluefox@privacynerd.de>
Date: Mon, 28 Oct 2024 17:00:17 +0000
Subject: [PATCH] [WelcomeScreen.py] Added

---
 WelcomeScreen.py | 26 ++++++++++++++++----------
 1 file changed, 16 insertions(+), 10 deletions(-)

diff --git a/WelcomeScreen.py b/WelcomeScreen.py
index 52bf389..0ba5d17 100644
--- a/WelcomeScreen.py
+++ b/WelcomeScreen.py
@@ -20,6 +20,11 @@ import time
 
 
 class WelcomeScreen:
+    # __init__() - the constructor
+    # lcd: an object of I2C_LCD (from the PCF8574T library - https://git.privacynerd.de/BlueFox/micropython-libraries/src/branch/main/PCF8574T)
+    # subtitle: the text shown below the cycling text (e.g. the device's name, ...) (Lorem ipsum. by default)
+    # starting_msg: the text shown while cycling (default: Starting...)
+    # started_msg: the text shown while cycling (default: Started!)
     def __init__(self, lcd, subtitle="Lorem ipsum.", starting_msg="Starting...", started_msg="Started!"):
         self.lcd = lcd
         self.columns = self.lcd.num_columns
@@ -28,6 +33,7 @@ class WelcomeScreen:
         self.starting_msg = starting_msg
         self.started_msg = started_msg
 
+
     # show() - Display the actual message
     # ---
     # cycles says how often the Starting text goes through
@@ -83,13 +89,13 @@ class WelcomeScreen:
                 wait_after = fade_down["wait_after"]
             else:
                 wait_after = 0.3
-            #if self.lines == 4:
-            #    current_display = padding_hyphen + self.started_msg.center(16) + self.subtitle.center(self.columns) + padding_hyphen
-            #else:
-            #    current_display = self.started_msg.center(16) + self.subtitle.center(self.columns)
-            self.lcd.move_to(0,y_offset)
-            self.lcd.putstr(padding + self.started_msg.center(16))
-            time.sleep(wait_between)
-            self.lcd.clear()
-            time.sleep(wait_after)
-
+            if self.lines == 4:
+                old_display = padding_hyphen + self.started_msg.center(16) + self.subtitle.center(self.columns) + padding_hyphen
+            else:
+                old_display = self.started_msg.center(16) + self.subtitle.center(self.columns)
+            self.lcd.move_to(0,0)  # move to the start of the lcd
+            while old_display != "":
+                old_display = old_display[:-self.columns]
+                lines_before = " " * (self.columns*self.lines-len(old_display))
+                self.lcd.putstr(lines_before + old_display)
+