Mod demos for 128x128 minimum screen.

README.md

@@ -80,7 +80,7 @@ of some display drivers.
  4.1 [Class methods](./README.md#41-class-methods)  
  4.2 [Constructor](./README.md#42-constructor)  
  4.3 [Callback methods](./README.md#43-callback-methods) Methods which run in response to events.  
- 4.4 [Method](./README.md#44-method) Optional interface to usayncio code.  
+ 4.4 [Method](./README.md#44-method) Optional interface to uasyncio code.  
 5. [Window class](./README.md#5-window-class)  
  5.1 [Constructor](./README.md#51-constructor)  
  5.2 [Class method](./README.md#52-class-method)  
@@ -374,6 +374,10 @@ files in `gui/core` are:
  * `colors.py` Constants including colors and shapes.
  * `ugui.py` The main GUI code.
  * `writer.py` Supports the `Writer` and `CWriter` classes.
+ * `framebuf_utils.mpy` Accelerator for the `CWriter` class. This optional file
+ is compiled for STM hardware. It is specific to Pyboards (1.x and D) and will
+ be ignored on other ports. Details may be found
+ [here](https://github.com/peterhinch/micropython-font-to-py/blob/master/writer/WRITER.md#224-a-performance-boost).
 
 The `gui/primitives` directory contains the following files:  
  * `switch.py` Interface to physical pushbuttons.
@@ -2207,12 +2211,17 @@ have the following bound variables, which should be considered read-only:
  * `width` Ditto.
  * `mrow` Maximum absolute row occupied by the widget.
  * `mcol` Maximum absolute col occupied by the widget.
+ 
+A further aid to metrics is the `Writer` method `.stringlen(s)`. This takes a
+string as its arg and returns its length in pixels when rendered using that
+`Writer` instance's font.
 
 The `mrow` and `mcol` values enable other widgets to be positioned relative to
 the one previously instantiated. In the cases of sliders, `Dial` and `Meter`
 widgets these take account of space ocupied by legends or labels.
 
-The `aclock.py` demo provides a simple example of this approach.
+The `aclock.py` and `linked_sliders.py` demos provide simple examples of this
+approach.
 
 ## Use of graphics primitives
 

gui/demos/dialog.py

@@ -32,7 +32,7 @@ class BaseScreen(Screen):
         # Trailing spaces ensure Label is wide enough to show results
         self.lbl = Label(wri, row, col, 'Dialog box test   ')
         # DialogBox constructor arguments. Here we pass all as keyword wargs.
-        kwargs = {'writer' : wri,
+        kwargs = {'writer' : wri, 'row': 20, 'col' : 2,
                   'elements' : (('Yes', GREEN), ('No', RED), ('Foo', YELLOW)),
                   'label' : 'Test dialog',
                   }

gui/demos/dropdown.py

@@ -13,7 +13,7 @@ from gui.widgets.dropdown import Dropdown
 from gui.core.writer import CWriter
 
 # Font for CWriter
-import gui.fonts.font10 as font
+import gui.fonts.arial10 as font
 from gui.core.colors import *
 
 
@@ -26,14 +26,17 @@ class BaseScreen(Screen):
 
         col = 2
         row = 2
-        Dropdown(wri, row, col,
+        self.dd = Dropdown(wri, row, col,
-                elements = ('hydrogen', 'helium', 'neon', 'xenon', 'radon'),
+                           elements = ('hydrogen', 'helium', 'neon', 'xenon', 'radon'),
-                bdcolor = GREEN, bgcolor = DARKGREEN,
+                           bdcolor = GREEN, bgcolor = DARKGREEN,
-                callback=self.ddcb)
+                           callback=self.ddcb)
         row += 30
-        self.lbl = Label(wri, row, col, 90, bdcolor=RED)
+        self.lbl = Label(wri, row, col, self.dd.width, bdcolor=RED)
         CloseButton(wri)  # Quit the application
 
+    def after_open(self):
+        self.lbl.value(self.dd.textvalue())
+
     def ddcb(self, dd):
         if hasattr(self, 'lbl'):
             self.lbl.value(dd.textvalue())

gui/demos/linked_sliders.py

@@ -12,7 +12,7 @@ from gui.widgets.sliders import Slider
 from gui.core.writer import CWriter
 
 # Font for CWriter
-import gui.fonts.arial10 as arial10
+import gui.fonts.arial10 as font
 from gui.core.colors import *
 
 
@@ -22,19 +22,18 @@ class BaseScreen(Screen):
         args = {
                 'bdcolor' : RED,
                 'slotcolor' : BLUE,
-                'legends' : ('0.0', '0.5', '1.0'), 
+                'legends' : ('0', '5', '10'), 
                 'value' : 0.5,
                 }
         super().__init__()
-        wri = CWriter(ssd, arial10, GREEN, BLACK, verbose=False)
+        wri = CWriter(ssd, font, GREEN, BLACK, verbose=False)
         col = 2
         row = 2
-        dc = 45
         # Note: callback runs now, but other sliders have not yet been instantiated.
         self.s0 = Slider(wri, row, col, callback=self.slider_cb, **args)
-        col += dc
+        col = self.s0.mcol + 2
         self.s1 = Slider(wri, row, col, **args)
-        col += dc
+        col = self.s1.mcol + 2
         self.s2 = Slider(wri, row, col, **args)
         CloseButton(wri)
 

gui/demos/screen_change.py

@@ -12,7 +12,7 @@ from gui.widgets.label import Label
 from gui.core.writer import CWriter
 
 # Font for CWriter
-import gui.fonts.font10 as font10
+import gui.fonts.arial10 as font
 from gui.core.colors import *
 
 # Defining a button in this way enables it to be re-used on
@@ -22,11 +22,11 @@ def fwdbutton(wri, row, col, cls_screen, text='Next'):
     def fwd(button):
         Screen.change(cls_screen)  # Callback
 
-    Button(wri, row, col, height = 30, callback = fwd,
+    Button(wri, row, col, callback = fwd,
            fgcolor = BLACK, bgcolor = GREEN,
-           text = text, shape = RECTANGLE, width = 100)
+           text = text, shape = RECTANGLE)
 
-wri = CWriter(ssd, font10, GREEN, BLACK, verbose=False)
+wri = CWriter(ssd, font, GREEN, BLACK, verbose=False)
 
 # This screen overlays BaseScreen.
 class BackScreen(Screen):

gui/demos/simple.py

@@ -29,7 +29,7 @@ class BaseScreen(Screen):
         col = 2
         row = 2
         Label(wri, row, col, 'Simple Demo')
-        row = 20
+        row = 50
         Button(wri, row, col, text='Yes', callback=my_callback, args=('Yes',))
         col += 60
         Button(wri, row, col, text='No', callback=my_callback, args=('No',))

gui/demos/tbox.py

@@ -21,13 +21,13 @@ from gui.widgets.buttons import Button, CloseButton
 
 wri = CWriter(ssd, arial10, verbose=False)
 
-def fwdbutton(wri, row, col, cls_screen, width, text='Next'):
+def fwdbutton(wri, row, col, cls_screen, text='Next'):
     def fwd(button):
         Screen.change(cls_screen)
-    Button(wri, row, col, height = 20, width = width,
+    b = Button(wri, row, col,
            callback = fwd, fgcolor = BLACK, bgcolor = GREEN,
            text = text, shape = RECTANGLE)
-    return width
+    return b.mrow
 
 
 async def wrap(tb):
@@ -53,7 +53,7 @@ async def clip(tb):
 
 # Args for textboxes
 # Positional
-pargs = (2, 2, 124, 7)  # Row, Col, Width, nlines
+pargs = (2, 2, 100, 7)  # Row, Col, Width, nlines
 
 # Keyword
 tbargs = {'fgcolor' : YELLOW,
@@ -103,10 +103,10 @@ class MainScreen(Screen):
         super().__init__()
         Label(wri, 2, 2, 'Select test to run')
         col = 2
-        row = 60
+        row = 20
-        col += fwdbutton(wri, row, col, TBWScreen, 50, 'Wrap') + 10
+        row = fwdbutton(wri, row, col, TBWScreen, 'Wrap') + 2
-        col += fwdbutton(wri, row, col, TBCScreen, 50, 'Clip') + 10
+        row = fwdbutton(wri, row, col, TBCScreen, 'Clip') + 2
-        fwdbutton(wri, row, col, TBUScreen, 50, 'Scroll')
+        fwdbutton(wri, row, col, TBUScreen, 'Scroll')
         CloseButton(wri)
         
 

gui/widgets/dialog.py

@@ -24,7 +24,7 @@ class DialogBox(Window):
             callback(Window, *args)
 
         height = 80
-        spacing = 10
+        spacing = 5
         buttonwidth = max(max(writer.stringlen(e[0]) for e in elements) + 14, buttonwidth)
         buttonheight = max(writer.height, 15)
         nelements = len(elements)

hardware_setup.py

@@ -1,54 +1,60 @@
-# ili9341_pico.py Customise for your hardware config
+# st7735r144_setup.py For my PCB with 1.44 inch 128*128 TFT Customise for your hardware config
 
 # Released under the MIT License (MIT). See LICENSE.
-# Copyright (c) 2021 Peter Hinch
+# Copyright (c) 2020 Peter Hinch
 
 # As written, supports:
-# ili9341 240x320 displays on Pi Pico
+# Adfruit 1.44 inch Color TFT LCD display with MicroSD Card Breakout:
-# Edit the driver import for other displays.
+# https://www.adafruit.com/product/2088
 
-# Demo of initialisation procedure designed to minimise risk of memory fail
+# WIRING (Adafruit pin nos and names).
-# when instantiating the frame buffer. The aim is to do this as early as
+# Pyb   SSD
-# possible before importing other modules.
+# Gnd   Gnd
+# 3V3   Vcc
+# Y11   RESET
+# Y12   D/C
+# W32   TFT_CS
+# Y8    MOSI
+# Y6    SCK
+# Vin   LITE (10) Backlight
 
-# WIRING
+# Switch wiring
-# Pico      Display
+# X1 Next
-# GPIO Pin
+# X2 Sel
-# 3v3  36   Vin
+# X3 Prev
-# IO6   9   CLK  Hardware SPI0
+# X4 Increase
-# IO7  10   DATA (AKA SI MOSI)
+# X5 Decrease
-# IO8  11   DC
-# IO9  12   Rst
-# Gnd  13   Gnd
-# IO10 14   CS
 
-# Pushbuttons are wired between the pin and Gnd
+import machine
-# Pico pin  Meaning
-# 16        Operate current control
-# 17        Decrease value of current control
-# 18        Select previous control
-# 19        Select next control
-# 20        Increase value of current control
-
-from machine import Pin, SPI, freq
 import gc
 
-from drivers.ili93xx.ili9341 import ILI9341 as SSD
+from machine import Pin, SPI
-freq(250_000_000)  # RP2 overclock
+import gc
-# Create and export an SSD instance
+import time
-pdc = Pin(8, Pin.OUT, value=0)  # Arbitrary pins
-prst = Pin(9, Pin.OUT, value=1)
-pcs = Pin(10, Pin.OUT, value=1)
-spi = SPI(0, baudrate=30_000_000)
-gc.collect()  # Precaution before instantiating framebuf
-ssd = SSD(spi, pcs, pdc, prst, usd=True)
 
+from drivers.st7735r.st7735r144_4bit import ST7735R as SSD
+pp = Pin('EN_3V3')
+pp(1)
+time.sleep(1)
+
+pdc = Pin('Y12', Pin.OUT_PP, value=0)
+pcs = Pin('W32', Pin.OUT_PP, value=1)
+prst = Pin('Y11', Pin.OUT_PP, value=1)
+spi = SPI(2, baudrate=6_000_000)
+gc.collect()  # Precaution before instantiating framebuf
+ssd = SSD(spi, pcs, pdc, prst)  # Create a display instance
 from gui.core.ugui import Display
+
 # Create and export a Display instance
 # Define control buttons
-nxt = Pin(19, Pin.IN, Pin.PULL_UP)  # Move to next control
+nxt = Pin(Pin.board.X5, Pin.IN, Pin.PULL_UP)  # Move to next control
-sel = Pin(16, Pin.IN, Pin.PULL_UP)  # Operate current control
+sel = Pin(Pin.board.X1, Pin.IN, Pin.PULL_UP)  # Operate current control
-prev = Pin(18, Pin.IN, Pin.PULL_UP)  # Move to previous control
+prev = Pin(Pin.board.X4, Pin.IN, Pin.PULL_UP)  # Move to previous control
-increase = Pin(20, Pin.IN, Pin.PULL_UP)  # Increase control's value
+increase = Pin(Pin.board.X2, Pin.IN, Pin.PULL_UP)  # Increase control's value
-decrease = Pin(17, Pin.IN, Pin.PULL_UP)  # Decrease control's value
+decrease = Pin(Pin.board.X3, Pin.IN, Pin.PULL_UP)  # Decrease control's value
 display = Display(ssd, nxt, sel, prev, increase, decrease)
+
+
+
+
+