apps: software: Add an apps to enable/disable other apps

Currently wasp-os enables a narrow set of applications because we don't
want to consume RAM by importing the module and constructing the
application. We can improve on this situation by providing a small
(stateless) application that can be used to enable or diable applications.
This allows all the ROMed applications to be enabled using the GUI
without compromising on the ability to develop applications.

In fact this application significantlly reduces the RAM consumed in the
default case becasue the Self Test app does not need to maintain its
state.

Signed-off-by: Daniel Thompson <daniel@redfelineninja.org.uk>

4 files changed, 128 insertions, 27 deletions

diff --git a/wasp/apps/flashlight.py b/wasp/apps/flashlight.py
index 95c44b2..f5b8684 100644
--- a/wasp/apps/flashlight.py
+++ b/wasp/apps/flashlight.py
@@ -11,7 +11,7 @@ import wasp
 
 import icons
 
-class FlashlightApp(object):
+class TorchApp(object):
     """Trivial flashlight application.
 
     .. figure:: res/TorchApp.png
diff --git a/wasp/apps/software.py b/wasp/apps/software.py
new file mode 100644
index 0000000..2c7869c
--- /dev/null
+++ b/wasp/apps/software.py
@@ -0,0 +1,80 @@
+# SPDX-License-Identifier: LGPL-3.0-or-later
+# Copyright (C) 2020 Daniel Thompson
+"""Wizard to generate main.py."""
+
+import wasp
+import icons
+
+class SoftwareApp():
+    """Enable and disable applications."""
+    NAME = 'Software'
+    ICON = icons.software
+
+    def foreground(self):
+        """Activate the application."""
+        self.db = (
+                ('alarm', wasp.widgets.Checkbox(0, 0, 'Alarm')),
+                ('calc', wasp.widgets.Checkbox(0, 40, 'Calculator')),
+                ('chrono', wasp.widgets.Checkbox(0, 80, 'Chrono')),
+                ('fibonacci_clock', wasp.widgets.Checkbox(0, 120, 'Fibonacci Clock')),
+                ('gameoflife', wasp.widgets.Checkbox(0, 160, 'Game Of Life')),
+                ('musicplayer', wasp.widgets.Checkbox(0, 0, 'Music Player')),
+                ('snake', wasp.widgets.Checkbox(0, 40, 'Snake Game')),
+                ('flashlight', wasp.widgets.Checkbox(0, 80, 'Torch')),
+                ('testapp', wasp.widgets.Checkbox(0, 120, 'Test')),
+            )
+        self.si = wasp.widgets.ScrollIndicator()
+        self.page = 0
+
+        # Get the initial state for the checkboxes
+        for _, checkbox in self.db:
+            label = checkbox.label.replace(' ', '')
+            for app in wasp.system.launcher_ring:
+                if type(app).__name__.startswith(label):
+                    checkbox.state = True
+                    break
+
+        self._draw()
+        wasp.system.request_event(wasp.EventMask.TOUCH |
+                                  wasp.EventMask.SWIPE_UPDOWN)
+
+    def get_page(self):
+        i = self.page * 5
+        return self.db[i:i+5]
+
+    def swipe(self, event):
+        """Notify the application of a touchscreen swipe event."""
+        page = self.page
+        pages = 1
+        if event[0] == wasp.EventType.UP:
+            page = page - 1 if page > 0 else pages
+        if event[0] == wasp.EventType.DOWN:
+            page = page + 1 if page < pages else 0
+        self.page = page
+
+        mute = wasp.watch.display.mute
+        mute(True)
+        self._draw()
+        mute(False)
+
+    def touch(self, event):
+        """Notify the application of a touchscreen touch event."""
+        for module, checkbox in self.get_page():
+            if checkbox.touch(event):
+                label = checkbox.label.replace(' ', '')
+                if checkbox.state:
+                    exec('import apps.{}'.format(module))
+                    exec('wasp.system.register(apps.{}.{}App())'.format(module, label))
+                else:
+                    for app in wasp.system.launcher_ring:
+                        if type(app).__name__.startswith(label):
+                            wasp.system.launcher_ring.remove(app)
+                            break
+                break
+
+    def _draw(self):
+        """Draw the display from scratch."""
+        wasp.watch.drawable.fill()
+        self.si.draw()
+        for _, checkbox in self.get_page():
+            checkbox.draw()
diff --git a/wasp/apps/testapp.py b/wasp/apps/testapp.py
index 8b8ff67..acd1735 100644
--- a/wasp/apps/testapp.py
+++ b/wasp/apps/testapp.py
@@ -133,7 +133,7 @@ class TestApp():
         t = machine.Timer(id=1, period=8000000)
         t.start()
         for i in range(0, 128, 16):
-            draw.blit(self.ICON, i+16, i+32)
+            draw.blit(icons.software, i+16, i+32)
         elapsed = t.time()
         t.stop()
         del t
diff --git a/wasp/icons.py b/wasp/icons.py
index 7eb2e22..2ccd140 100644
--- a/wasp/icons.py
+++ b/wasp/icons.py
@@ -27,12 +27,56 @@ bomb = (
     b'\x0e'
 )
 
-# 2-bit RLE, generated from res/app_icon.png, 460 bytes
+# 2-bit RLE, generated from res/app_icon.png, 224 bytes
 app = (
     b'\x02'
     b'`@'
     b'\x1e@\x81d<d<d;f?X\xec2\xf0/'
     b'\xf2-\xf4,\xc3.\xc3,\xc3.\xc3,\xc3.\xc3,'
+    b'\xc3.\xc3,\xc3.\xc3,\xc3.\xc3,\xc3.\xc3,'
+    b'\xc3.\xc3,\xc3.\xc3,\xc3.\xc3,\xc3.\xc3,'
+    b'\xc3.\xc3,\xc3.\xc3,\xc3.\xc3,\xc3.\xc3,'
+    b'\xc3.\xc3,\xc3.\xc3,\xc3.\xc3+\xc4.\xc3*'
+    b'\xc5.\xc3*\xc5.\xc3*\xc5.\xc3*\xc5.\xc3*'
+    b'\xc5.\xc3*\xc5.\xc3*\xc5.\xc3+\xc4.\xc3,'
+    b'\xc3.\xc3,\xc3.\xc3,\xc3.\xc3,\xc3.\xc3,'
+    b'\xc3.\xc3,\xc3.\xc3,\xc3.\xc3,\xc3.\xc3,'
+    b'\xc3.\xc3,\xc3.\xc3,\xc3.\xc3,\xc3.\xc3,'
+    b'\xc3.\xc3,\xc3.\xc3,\xc3.\xc3,\xc3.\xc3,'
+    b'\xc3.\xc3,\xc3.\xc3,\xc3.\xc3,\xf4-\xf2/'
+    b'\xf02\xec?Xf;d<d<d\x1e'
+)
+
+# 2-bit RLE, generated from res/clock_icon.png, 288 bytes
+clock = (
+    b'\x02'
+    b'`@'
+    b'?\xff\xff\xff\xff\xff\xff\x8e@\xacF\r\xc6!E\x0b'
+    b'\xc8\x0cH\x0b\xca\x1dI\x07\xcc\nH\n\xcc\x1bK\x06'
+    b'\xce\x08C\x02C\n\xc4\x05\xc4\x1aD\x03D\x06\xc2\x08'
+    b'\xc4\rC\t\xc4\x07\xc3\x19D\x05D\x10\xc4\x0cC\t'
+    b'\xc3\t\xc2\x19C\x07C\x11\xc3\x0cC\t\xc3\t\xc3\n'
+    b'D\tD\x07D\x10\xc3\x0cC\t\xc3\t\xc3\nD\t'
+    b'C\tC\x10\xc3\x0cC\t\xc3\t\xc3\nD\tC\t'
+    b'C\x10\xc3\x0cC\t\xc4\x07\xc4\nD\tC\tC\x0f'
+    b'\xc4\x0cC\n\xc4\x05\xc5\nD\tC\tC\x0e\xc4\r'
+    b'C\n\xca\x01\xc3\x17C\tC\r\xc5\rC\x0b\xc9\x01'
+    b'\xc3\x17C\tC\x0c\xc5\x0eC\r\xc5\x03\xc3\x17C\t'
+    b'C\x0b\xc5\x0fC\x15\xc3\x17C\tC\n\xc5\x10C\x14'
+    b'\xc4\x17C\tC\t\xc5\x11C\x14\xc3\x18D\x07D\x08'
+    b'\xc4\x13C\x14\xc3\x19C\x07C\x08\xc4\x14C\x13\xc4\x0b'
+    b'D\nC\x06D\x07\xc4\x15C\x0b\xc1\x05\xc5\x0cD\x0b'
+    b'D\x03D\x07\xc3\x12M\x06\xca\rD\x0bK\x06\xcf\x07'
+    b'M\x06\xc9\x0eD\x0cI\x07\xcf\x07M\x07\xc6\x10D\x0e'
+    b'E\t\xcf?\xff\xff\xff\xff\xff\xff\xff\xffk'
+)
+
+# 2-bit RLE, generated from res/software_icon.png, 460 bytes
+software = (
+    b'\x02'
+    b'`@'
+    b'\x1e@\x81d<d<d;f?X\xec2\xf0/'
+    b'\xf2-\xf4,\xc3.\xc3,\xc3.\xc3,\xc3.\xc3,'
     b'\xc3.\xc3,\xc3.\xc3,\xc3\x0c\x80\xd2\x83\x10\xc0C'
     b'\xc3\x0c@\xd7C,C\n\x87\x0c\xc7\nC,C\t'
     b'\x83\x02\x84\n\xc4\x02\xc3\tC,C\x08\x82\x07\x82\x08'
@@ -62,30 +106,6 @@ app = (
     b'\x81f;d<d<d\x1e'
 )
 
-# 2-bit RLE, generated from res/clock_icon.png, 288 bytes
-clock = (
-    b'\x02'
-    b'`@'
-    b'?\xff\xff\xff\xff\xff\xff\x8e@\xacF\r\xc6!E\x0b'
-    b'\xc8\x0cH\x0b\xca\x1dI\x07\xcc\nH\n\xcc\x1bK\x06'
-    b'\xce\x08C\x02C\n\xc4\x05\xc4\x1aD\x03D\x06\xc2\x08'
-    b'\xc4\rC\t\xc4\x07\xc3\x19D\x05D\x10\xc4\x0cC\t'
-    b'\xc3\t\xc2\x19C\x07C\x11\xc3\x0cC\t\xc3\t\xc3\n'
-    b'D\tD\x07D\x10\xc3\x0cC\t\xc3\t\xc3\nD\t'
-    b'C\tC\x10\xc3\x0cC\t\xc3\t\xc3\nD\tC\t'
-    b'C\x10\xc3\x0cC\t\xc4\x07\xc4\nD\tC\tC\x0f'
-    b'\xc4\x0cC\n\xc4\x05\xc5\nD\tC\tC\x0e\xc4\r'
-    b'C\n\xca\x01\xc3\x17C\tC\r\xc5\rC\x0b\xc9\x01'
-    b'\xc3\x17C\tC\x0c\xc5\x0eC\r\xc5\x03\xc3\x17C\t'
-    b'C\x0b\xc5\x0fC\x15\xc3\x17C\tC\n\xc5\x10C\x14'
-    b'\xc4\x17C\tC\t\xc5\x11C\x14\xc3\x18D\x07D\x08'
-    b'\xc4\x13C\x14\xc3\x19C\x07C\x08\xc4\x14C\x13\xc4\x0b'
-    b'D\nC\x06D\x07\xc4\x15C\x0b\xc1\x05\xc5\x0cD\x0b'
-    b'D\x03D\x07\xc3\x12M\x06\xca\rD\x0bK\x06\xcf\x07'
-    b'M\x06\xc9\x0eD\x0cI\x07\xcf\x07M\x07\xc6\x10D\x0e'
-    b'E\t\xcf?\xff\xff\xff\xff\xff\xff\xff\xffk'
-)
-
 # 2-bit RLE, generated from res/settings_icon.png, 468 bytes
 settings = (
     b'\x02'
@@ -345,3 +365,4 @@ checkbox = (
     b'F\x85O\xc6G\x83P\xc6H\x81Q\xc6Z\xc6Z\xc6'
     b'Z\xc7X\xe4\x01\xde\x03\xdc\x02'
 )
+