From 24fc4a9e95a6e5b54381a1cae24b4b835bd3e688 Mon Sep 17 00:00:00 2001
From: Alexander Entinger <consulting@lxrobotics.com>
Date: Wed, 10 Jan 2024 09:20:33 +0100
Subject: [PATCH] Fix: Clear up artefacts after when using scrolling text. This
 fixes #27.

---
 .gitignore              |  1 +
 src/ArduinoGraphics.cpp | 16 ++++++++++++----
 2 files changed, 13 insertions(+), 4 deletions(-)
 create mode 100644 .gitignore

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..485dee6
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+.idea
diff --git a/src/ArduinoGraphics.cpp b/src/ArduinoGraphics.cpp
index 15fe1ad..3590eec 100644
--- a/src/ArduinoGraphics.cpp
+++ b/src/ArduinoGraphics.cpp
@@ -436,7 +436,9 @@ void ArduinoGraphics::endText(int scrollDirection)
 
     for (int i = 0; i < scrollLength; i++) {
       beginDraw();
-      text(_textBuffer, _textX - i, _textY);
+      int const text_x = _textX - i;
+      text(_textBuffer, text_x, _textY);
+      bitmap(_font->data[0x20], text_x - 1, _textY, 1, _font->height);
       endDraw();
 
       delay(_textScrollSpeed);
@@ -446,7 +448,9 @@ void ArduinoGraphics::endText(int scrollDirection)
 
     for (int i = 0; i < scrollLength; i++) {
       beginDraw();
-      text(_textBuffer, _textX - (scrollLength - i - 1), _textY);
+      int const text_x = _textX - (scrollLength - i - 1);
+      text(_textBuffer, text_x, _textY);
+      bitmap(_font->data[0x20], text_x - 1, _textY, 1, _font->height);
       endDraw();
 
       delay(_textScrollSpeed);
@@ -456,7 +460,9 @@ void ArduinoGraphics::endText(int scrollDirection)
 
     for (int i = 0; i < scrollLength; i++) {
       beginDraw();
-      text(_textBuffer, _textX, _textY - i);
+      int const text_y = _textY - i;
+      text(_textBuffer, _textX, text_y);
+      bitmap(_font->data[0x20], _textX, text_y - 1, _font->width, 1);
       endDraw();
 
       delay(_textScrollSpeed);
@@ -466,7 +472,9 @@ void ArduinoGraphics::endText(int scrollDirection)
 
     for (int i = 0; i < scrollLength; i++) {
       beginDraw();
-      text(_textBuffer, _textX, _textY - (scrollLength - i - 1));
+      int const text_y = _textY - (scrollLength - i - 1);
+      text(_textBuffer, _textX, text_y);
+      bitmap(_font->data[0x20], _textX, text_y - 1, _font->width, 1);
       endDraw();
 
       delay(_textScrollSpeed);