1 files changed, 69 insertions, 0 deletions
diff --git a/i3/blocks/scroll b/i3/blocks/scroll
new file mode 100755
index 0000000..677a7fc
--- /dev/null
+++ b/i3/blocks/scroll
@@ -0,0 +1,69 @@
+#!/bin/bash
+# IMPORTANT: 
+# To make this block work, you have to edit your block-command.
+# It should point to this file. For best performance, only use it on blocks
+# which are wide and that you need to scroll.
+# 
+# Example:
+# command=~/.i3-blocks/blocks/scroll $BLOCK_NAME
+# markup=pango
+# interval=repeat
+
+PROG="${1}"
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+BLOCK_PATH="${SCRIPT_DIR}/${PROG}"
+
+INTERVAL=0.17
+MAX_LENGTH=25
+ADD_STR=" | "
+ADD_LENGTH=${#ADD_STR}
+
+if [[ -f "${BLOCK_PATH}" ]]; then
+  BLOCK_OUT=$(bash "${BLOCK_PATH}")
+  OUT_TEXT=$(echo "${BLOCK_OUT}" | tail -n 1)
+elif [[ "${PROG}" != "" ]]; then
+  OUT_TEXT=$(${PROG})
+  if [[ $? -ne 0 ]]; then
+    sleep 1
+    echo "${PROG}"
+    echo "${PROG}"
+    exit 33
+  fi
+fi
+
+if [[ "${OUT_TEXT}" ]]; then
+  CHECK_SUM=$(echo "${PROG}-${BLOCK_INSTANCE}" | md5sum | awk '{print $1}')
+
+  TMP_FILE="/tmp/.scroll-${CHECK_SUM}"
+
+  if [[ -f "${TMP_FILE}" ]]; then
+    SCROLL_POS=$(cat "${TMP_FILE}")
+  else
+    SCROLL_POS=0
+  fi
+
+  TEXT_LENGTH=${#OUT_TEXT}
+  MAX_OFFSET=$((TEXT_LENGTH +ADD_LENGTH -1))
+
+  if [[ "${TEXT_LENGTH}" -lt "${MAX_LENGTH}" ]]; then
+    MAX_LENGTH="${TEXT_LENGTH}"
+  fi
+
+  if [[ "${SCROLL_POS}" -gt "${MAX_OFFSET}" ]]; then
+    SCROLL_POS=0
+  fi
+
+  TEXT_LINE="${OUT_TEXT}${ADD_STR}${OUT_TEXT}${ADD_STR}${OUT_TEXT}"
+  TEXT_LINE=${TEXT_LINE:$SCROLL_POS:$MAX_LENGTH}
+
+  echo "<span font_family='monospace'>${TEXT_LINE}</span>"
+  echo "<span font_family='monospace'>${TEXT_LINE}</span>"
+
+  SCROLL_POS=$((SCROLL_POS +1))
+
+  echo "${SCROLL_POS}" > "${TMP_FILE}"
+  sleep "${INTERVAL}"
+else
+  sleep 1
+fi