Remove morse from default apps

Even after optimizing it, it makes the image 224 bytes too big.

Signed-off-by: Francesco Gazzetta <fgaz@fgaz.me>

1 files changed, 136 insertions, 0 deletions

diff --git a/apps/Morse.py b/apps/Morse.py
new file mode 100644
index 0000000..11c3aa5
--- /dev/null
+++ b/apps/Morse.py
@@ -0,0 +1,136 @@
+# SPDX-License-Identifier: LGPL-3.0-or-later
+# Copyright (C) 2021 Francesco Gazzetta
+
+"""Morse translator and notepad
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+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.
+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.
+
+
+.. figure:: res/MorseApp.png
+    :width: 179
+"""
+
+import wasp
+import icons
+import fonts
+from math import floor
+from micropython import const
+
+
+_WIDTH = const(240)
+_HEIGHT = const(240)
+# No easy way to make this depend on _WIDTH
+_MAXINPUT = const(16)
+
+# These two need to match
+_FONTH = const(24)
+_FONT = fonts.sans24
+
+# Precomputed for efficiency
+_LINEH = const(30) # int(_FONTH * 1.25)
+_MAXLINES = const(7) # floor(_HEIGHT / _LINEH) - 1 # the "-1" is the input line
+
+# The morse lookup table, represented as a flattened binary tree.
+# 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 = " EISHVUF?ARL?WPJTNDBXKCYMGZQO??"
+
+class MorseApp():
+    NAME = 'Morse'
+    # 2-bit RLE, 96x64, generated from res/morse_icon.png, 143 bytes
+    ICON = (
+        b'\x02'
+        b'`@'
+        b'?\xff\xff\xff\xff\x13\xc4?\x1c\xc6?\x1b\xc6?\x1b\xc6'
+        b'?\x1a\xc8?\x19\xc8?\x18\xca?\x17\xc4\x02\xc4?\x17'
+        b'\xc4\x02\xc4?\x16\xc5\x02\xc5?\x15\xc4\x04\xc4?\x15\xc4'
+        b'\x04\xc4?\x14\xc4\x06\xc4?\x13\xc4\x06\xc4?\x12\xc5\x06'
+        b'\xc5?\x11\xc4\x08\xc4?\x11\xd0?\x10\xd2?\x0f\xd2?'
+        b'\x0e\xc5\n\xc4?\x0e\xc4\x0c\xc4?\r\xc4\x0c\xc4?\x0c'
+        b'\xc5\x0c\xc5?\x0b\xc4\x0e\xc4?\x0b\xc4\x0e\xc4?\n\xc4'
+        b'\x10\xc4?\xff\xff\xff\xff\x83\xc4\x0e\xda4\xc4\x0e\xda4'
+        b'\xc4\x0e\xda4\xc4\x0e\xda?\xff\xff\xff\xfe'
+    )
+
+    def __init__(self):
+        self.letter = ""
+        self.text = [""]
+        pass
+
+    def foreground(self):
+        self._draw()
+        wasp.system.request_event(wasp.EventMask.TOUCH |
+                                  wasp.EventMask.SWIPE_UPDOWN)
+
+    def swipe(self, event):
+        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 = ""
+        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)
+        if len(split) > 2:
+            self.text.append(self.text[-1][split[1]:split[2]] + addition)
+            self.text[-2] = self.text[-2][split[0]:split[1]]
+            if len(self.text) > _MAXLINES:
+                self.text.pop(0)
+            # Ideally a full refresh should be done only when we exceed
+            # _MAXLINES, but this should be fast enough
+            self._draw()
+        else:
+            self.text[-1] = merged
+        self._update()
+
+    def _draw(self):
+        """Draw the display from scratch"""
+        draw = wasp.watch.drawable
+        draw.fill()
+        i = 0
+        for line in self.text:
+            draw.string(line, 0, _LINEH * i)
+            i += 1
+        self._update()
+
+    def _update(self):
+        """Update the dynamic parts of the application display, specifically the
+        input line and last line of the text.
+        The full text area is updated in _draw() instead."""
+        draw = wasp.watch.drawable
+        draw.string(self.text[-1], 0, _LINEH*(len(self.text)-1))
+        guess = self._lookup(self.letter)
+        draw.string("{} {}".format(self.letter, guess), 0, _HEIGHT - _FONTH, width=_WIDTH)
+
+    def _lookup(self, s):
+        i = 0 # start of the subtree (current node)
+        l = len(_CODE) # length of the subtree
+
+        for c in s:
+            # first discard the head, which represent the previous guess
+            i += 1
+            l -= 1
+
+            # Check if we can no longer bisect while there are still dots/lines
+            if l <= 0: return "?"
+
+            # Update the bounds to the appropriate subtree
+            # (left or right of the tail).
+            # The length will always be half:
+            l //= 2
+            # The index will be either at the beginning of the tail,
+            # or at its half, in which case we subtract the current length,
+            # which is half of the old length:
+            if c == "-": i += l
+        return _CODE[i]