Update 'CARDPUTER CircuitPython/projects/text_editor.py'

CARDPUTER CircuitPython/projects/text_editor.py

@@ -5,6 +5,8 @@
 #
 # WORK IN PROGRESS
 # CTRL + S to save text to the SD Card
+# CTRL + O to open a text file
+# UP and DOWN scrolling - (use cursor )
 ######
 
 import board
@@ -17,6 +19,39 @@ import sdcardio
 import storage
 import os
 
+def save_file():
+    save_text = "save file"
+    save_group = label.Label(terminalio.FONT, text=save_text)
+    save_group.x = 10
+    save_group.y = 10
+    board.DISPLAY.root_group = save_group
+
+def open_file():
+    open_text = "open file"
+    open_group = label.Label(terminalio.FONT, text=open_text)
+    open_group.x = 10
+    open_group.y = 10
+    board.DISPLAY.root_group = open_group
+
+def editor(text):
+    if page == "editor":
+        ## WRAPPING
+        ## calculate wrapping when entering a character 
+        lines = text.split("\n")
+        current_line = lines[len(lines)-1]
+        if len(current_line) > 35:
+            text=text+"\n" # <- start a new line here
+        ##############################################
+        text = text+key
+        text_area.text = text
+    return text
+
+def esc():
+    if page == "editor":
+        pass
+    elif page == "save" or page == "open":
+        board.DISPLAY.root_group = intro_text_area
+
 ## SD Card set up for saving text to SD card
 spi = busio.SPI(board.SD_SCK, MOSI=board.SD_MOSI, MISO=board.SD_MISO)
 cs = board.SD_CS
@@ -34,6 +69,8 @@ except OSError:
 
 keyb = Keyboard()
 
+page = "editor"
+
 intro_text = "Press CTRL+D to clear text\n"+SD_status+"\n\n"
 intro_text_area = label.Label(terminalio.FONT, text=intro_text, color="C3B")
 intro_text_area.x = 10
@@ -53,13 +90,15 @@ while True:
         text = text[:-1] 
     elif key == "CTRLD":
         text = ""
+    elif key == "CTRLS":
+        save_file()
+        page = "save"
+    elif key == "CTRLO":
+        open_file()
+        page="open"
+    elif key == "ESC":
+        esc()
+        page = "editor"
     else:
-        ## WRAPPING
-        ## calculate wrapping when entering a character 
-        lines = text.split("\n")
-        current_line = lines[len(lines)-1]
-        if len(current_line) > 35:
-            text=text+"\n" # <- start a new line here
-        ##############################################
-        text = text+key
-    text_area.text = text
+        text = editor(text)
+