pre-generated qr codes and scrolling text on pico.

.gitignore

@@ -1 +1,2 @@
 __pycache__
+qr_tmp.txt

camp_pico.py

@@ -0,0 +1,520 @@
+#!/usr/bin/env python3
+
+# ----------------------------------------------------------------------------
+# "THE BEER-WARE LICENSE" (Revision 42):
+# <xythobuz@xythobuz.de> wrote this file.  As long as you retain this notice
+# you can do whatever you want with this stuff. If we meet some day, and you
+# think this stuff is worth it, you can buy me a beer in return.   Thomas Buck
+# ----------------------------------------------------------------------------
+
+camp_pink = (251, 72, 196)
+camp_green = (63, 255, 33)
+
+# QR code image for "Hello World"
+# size:21x21
+qr_data = [
+    [
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (0, 0, 0),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+    ],
+    [
+        (255, 255, 255),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (255, 255, 255),
+        (0, 0, 0),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (255, 255, 255),
+    ],
+    [
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+    ],
+    [
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+    ],
+    [
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+    ],
+    [
+        (255, 255, 255),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (255, 255, 255),
+    ],
+    [
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+    ],
+    [
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (255, 255, 255),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+    ],
+    [
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (0, 0, 0),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+    ],
+    [
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (255, 255, 255),
+        (0, 0, 0),
+        (0, 0, 0),
+        (255, 255, 255),
+        (255, 255, 255),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (0, 0, 0),
+        (0, 0, 0),
+        (255, 255, 255),
+        (255, 255, 255),
+    ],
+    [
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+    ],
+    [
+        (0, 0, 0),
+        (255, 255, 255),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+    ],
+    [
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (255, 255, 255),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+    ],
+    [
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (255, 255, 255),
+        (255, 255, 255),
+        (0, 0, 0),
+    ],
+    [
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (0, 0, 0),
+        (0, 0, 0),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (255, 255, 255),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+    ],
+    [
+        (255, 255, 255),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (255, 255, 255),
+        (255, 255, 255),
+        (0, 0, 0),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (255, 255, 255),
+    ],
+    [
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+    ],
+    [
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (0, 0, 0),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (0, 0, 0),
+        (0, 0, 0),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (255, 255, 255),
+        (0, 0, 0),
+    ],
+    [
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+    ],
+    [
+        (255, 255, 255),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (255, 255, 255),
+        (255, 255, 255),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+    ],
+    [
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (255, 255, 255),
+        (0, 0, 0),
+        (255, 255, 255),
+        (255, 255, 255),
+        (0, 0, 0),
+        (0, 0, 0),
+        (255, 255, 255),
+        (0, 0, 0),
+        (0, 0, 0),
+        (0, 0, 0),
+        (255, 255, 255),
+        (255, 255, 255),
+    ],
+]
+
+if True:#__name__ == "__main__":
+    from solid import Solid
+    from life import GameOfLife
+    from net import CheckHTTP
+    from qr import QRScreen
+    from scroll import ScrollText
+    from manager import Manager
+
+    import util
+    t = util.getTarget()
+
+    # Main "Menu"
+    m = Manager(t)
+    m.add(ScrollText(t, "#CCCAMP23", "bitmap8", 1, 10, camp_green))
+    m.add(Solid(t, 1.0))
+    #m.add(QRScreen(t, qr_data, 30.0, "Drinks:", "bitmap8", (255, 255, 255), (0, 0, 0)))
+    #m.add(Solid(t, 1.0))
+
+    m.restart()
+    t.loop(m.draw)

copy.sh

@@ -11,6 +11,8 @@ cp solid.py /pyboard
 cp splash.py /pyboard
 cp life.py /pyboard
 cp qr.py /pyboard
+cp camp_pico.py /pyboard
+cp scroll.py /pyboard
 cp $1 /pyboard/main.py
 EOF
 else
@@ -25,5 +27,7 @@ cp solid.py /pyboard
 cp splash.py /pyboard
 cp life.py /pyboard
 cp qr.py /pyboard
+cp camp_pico.py /pyboard
+cp scroll.py /pyboard
 EOF
 fi

pico.py

@@ -69,18 +69,30 @@ class PicoText:
         self.color = c
 
     def text(self, s, f, offset = 0, earlyAbort = True, yOff = 0, compat = True):
+        if not earlyAbort:
+            return self.gui.matrix.display.measure_text(s, scale=1)
+
         pen = self.gui.matrix.display.create_pen(self.fg[0], self.fg[1], self.fg[2])
         self.gui.matrix.display.set_pen(pen)
 
         self.gui.matrix.display.set_font(f)
 
         if not compat:
-            x = 0
+            # absolute positioning
+            x = offset
             y = yOff
         else:
-            # TODO
-            x = 0
-            y = int(self.gui.height / 2 - 4 + yOff)
+            # centered, like BDF DrawText implementation
+            fontOff = 0
+            if f == "bitmap6":
+                fontOff = 3
+            elif f == "bitmap8":
+                fontOff = 4
+            elif f == "bitmap14_outline":
+                fontOff = 7
+
+            x = -offset
+            y = int(self.gui.height / 2 - fontOff + yOff)
 
         self.gui.matrix.display.text(s, x, y, scale=1)
 

qr.py

@@ -14,36 +14,50 @@ import time
 import qrcode
 import util
 
+class PicoImage():
+    def getpixel(self, xy):
+        x, y = xy
+        return self.data[y][x]
+
 class QRScreen:
     def __init__(self, g, d, t = 10.0, h = None, f = None, c1 = (0, 0, 0), c2 = (255, 255, 255)):
         self.gui = g
+        self.data = d
         self.time = t
         self.heading = h
         self.font = f
         self.c1 = c1
         self.c2 = c2
 
-        qr = qrcode.QRCode(
-            box_size = 1,
-            border = 0,
-        )
-        qr.add_data(d)
-        qr.make(fit = True)
-
-        if util.isPi():
-            # work-around for weird bug in old qrcode lib?
-            if (self.c1 == (0, 0, 0)) and (self.c2 == (255, 255, 255)):
-                self.image = qr.make_image(fill_color = "black", back_color = "white")
-                self.c1 = (0, 0, 0)
-                self.c2 = (255, 255, 255)
-            elif (self.c1 == (255, 255, 255)) and (self.c2 == (0, 0, 0)):
-                self.image = qr.make_image(fill_color = "white", back_color = "black")
-                self.c1 = (255, 255, 255)
-                self.c2 = (0, 0, 0)
+        if isinstance(self.data, str):
+            # Generate QR code with library
+            qr = qrcode.QRCode(
+                box_size = 1,
+                border = 0,
+            )
+            qr.add_data(self.data)
+            qr.make(fit = True)
+
+            if util.isPi():
+                # work-around for weird bug in old qrcode lib?
+                if (self.c1 == (0, 0, 0)) and (self.c2 == (255, 255, 255)):
+                    self.image = qr.make_image(fill_color = "black", back_color = "white")
+                    self.c1 = (0, 0, 0)
+                    self.c2 = (255, 255, 255)
+                elif (self.c1 == (255, 255, 255)) and (self.c2 == (0, 0, 0)):
+                    self.image = qr.make_image(fill_color = "white", back_color = "black")
+                    self.c1 = (255, 255, 255)
+                    self.c2 = (0, 0, 0)
+                else:
+                    raise RuntimeError("QR colors other than black/white not supported on Pi")
             else:
-                raise RuntimeError("QR colors other than black/white not supported on Pi")
+                self.image = qr.make_image(fill_color = self.c1, back_color = self.c2)
         else:
-            self.image = qr.make_image(fill_color = self.c1, back_color = self.c2)
+            # Show pre-generated QR code image
+            self.image = PicoImage()
+            self.image.height = len(self.data)
+            self.image.width = len(self.data[0])
+            self.image.data = self.data
 
         if self.heading != None:
             DrawText = util.getTextDrawer()
@@ -88,7 +102,24 @@ class QRScreen:
 
 if __name__ == "__main__":
     import util
+    import os
+
     t = util.getTarget()
 
     d = QRScreen(t, "Hello World", 10.0, "Drinks:", "tom-thumb", (255, 255, 255), (0, 0, 0))
+
+    # dump generated QR image to console, for embedding in Pico script
+    print("Dumping QR image to qr_tmp.txt")
+    with open("qr_tmp.txt", "w") as f:
+        f.write("# QR code image for \"" + d.data + "\"" + os.linesep)
+        f.write("# size:" + str(d.image.width) + "x" + str(d.image.height) + os.linesep)
+        f.write("qr_data = [" + os.linesep)
+        for y in range(0, d.image.height):
+            f.write("    [" + os.linesep)
+            for x in range(0, d.image.width):
+                s = str(d.image.getpixel((x, y)))
+                f.write("        " + s + "," + os.linesep)
+            f.write("    ]," + os.linesep)
+        f.write("]" + os.linesep)
+
     t.loop(d.draw)

scroll.py

@@ -13,7 +13,6 @@
 # think this stuff is worth it, you can buy me a beer in return.   Thomas Buck
 # ----------------------------------------------------------------------------
 
-from PIL import Image
 import os
 import time
 import util
@@ -34,6 +33,7 @@ class ScrollText:
         self.text = t
         self.font = f
         self.width = self.drawer.text(self.text, self.font, 0, False)
+        print(self.text, self.font, self.width)
 
     def restart(self):
         self.offset = -self.gui.width
@@ -46,6 +46,7 @@ class ScrollText:
     def draw(self):
         if (time.time() - self.last) > self.speed:
             off = (time.time() - self.last) / self.speed
+            print(self.offset, "->", self.offset + int(off))
             self.offset += int(off)
             self.last = time.time()
             if self.offset >= self.width: