feat: morse app saves text to file + erase + space + newline

Signed-off-by: thiswillbeyourgithub <github@32mail.33mail.comm>

apps/Morse.py

@@ -6,7 +6,8 @@
 
 This app is a simple morse translator that also doubles as a notepad.
 Swipe up for a line, swipe down for a dot, tap for end letter, double tap for
-end word.
+end word. Swipe right for space, twice for newline. Swipe left to delete
+character.
 Up to 7 lines of translation will be displayed on a 240x240 screen, and old
 lines will be deleted.
 There is a preview of the next letter at the bottom of the screen.
@@ -40,8 +41,10 @@ _MAXLINES = const(7) # floor(_HEIGHT / _LINEH) - 1 # the "-1" is the input line
 # The head is the value of the node, the tail are the subtrees:
 # left half of the tail = the next symbol is a dot
 # right half of the tail = the next symbol is a line
-_CODE = " EISH54V?3UF????2ARL?????WP??J?1TNDB6?X??KC??Y??MGZ7?Q??O?8??90"
-# Or, letters only:
+_CODE = " eish54v?3uf????2arl?????wp??j?1tndb6?x??kc??y??mgz7?q??o?8??90"
+# uppercase:
+#_CODE = " EISH54V?3UF????2ARL?????WP??J?1TNDB6?X??KC??Y??MGZ7?Q??O?8??90"
+# letters only:
 #_CODE = " EISHVUF?ARL?WPJTNDBXKCYMGZQO??"
 
 class MorseApp():
@@ -64,21 +67,56 @@ class MorseApp():
     def __init__(self):
         self.letter = ""
         self.text = [""]
-        pass
 
     def foreground(self):
+        try:
+            f = open("Morse.txt", "r")
+            text = "".join(f.readlines()).replace("\n", "%").replace("%%", "%")
+            f.close()
+            text = text.split("%")
+            if len(text) > _MAXLINES:
+                text = text[-_MAXLINES:]
+            self.text = text
+        except:
+            self.text = [""]
         self._draw()
         wasp.system.request_event(wasp.EventMask.TOUCH |
+                                  wasp.EventMask.SWIPE_LEFTRIGHT |
                                   wasp.EventMask.SWIPE_UPDOWN)
 
+    def background(self):
+        text = "%".join(self.text)
+        f = open("Morse.txt", "w")
+        for line in text:
+            f.write(line)
+        f.close()
+
     def swipe(self, event):
-        if len(self.letter) < _MAXINPUT:
-            self.letter += "-" if event[0] == wasp.EventType.UP else "."
+        if event[0] == wasp.EventType.LEFT:
+            if self.letter == "":
+                if self.text[-1] == "" and len(self.text) > 1:
+                    self.text.pop(-1)
+                else:
+                    self.text[-1] = str(self.text[-1])[:-1]
+            self.letter = ""
+            self.text[-1] = "{}  ".format(self.text[-1])  # adds space, otherwise the screen will not be erased there
             self._update()
+            self.text[-1] = str(self.text[-1])[:-2]  # removes space
+        elif event[0] == wasp.EventType.RIGHT:
+            if self.text[-1].endswith(" "):
+                self.text.append("")
+                self._draw()
+            else:
+                self._add_letter(" ")
+        else:
+            if len(self.letter) < _MAXINPUT:
+                self.letter += "-" if event[0] == wasp.EventType.UP else "."
+                self._update()
 
     def touch(self, event):
-        addition = self._lookup(self.letter)
-        self.letter = ""
+        self._add_letter(self._lookup(self.letter))
+
+    def _add_letter(self, addition):
         merged = self.text[-1] + addition
         # Check if the new text overflows the screen and add a new line if that's the case
         split = wasp.watch.drawable.wrap(merged, _WIDTH)
@@ -92,6 +130,7 @@ class MorseApp():
             self._draw()
         else:
             self.text[-1] = merged
+        self.letter = ""
         self._update()
 
     def _draw(self):