Fix ST7735 128×128 display: correct color order and add UI scaling

docs/io_config.md

@@ -40,7 +40,8 @@ The table below uses standard 40-pin physical numbering and highlights:
 
 ## Waveshare SPI display pin notes
 
-For the Waveshare 1.3" LCD HAT on a GPIO40 header:
+The Waveshare 1.3" LCD HAT (ST7789, 240×240) and 1.44" LCD HAT (ST7735S,
+128×128) share the same GPIO40 header pinout:
 - `SPI0_MOSI`: pin `19` (`GPIO10`)
 - `SPI0_SCLK`: pin `23` (`GPIO11`)
 - `CS` / `LCD-CS` (`SPI0_CE0`): pin `24` (`GPIO8`)
@@ -50,7 +51,16 @@ For the Waveshare 1.3" LCD HAT on a GPIO40 header:
 - Power: pin `1` (`3V3`)
 - Ground: e.g. pin `6` (`GND`)
 
-These are the standard Waveshare/RPi-style assignments that the `RPI_40` profile follows.
+Both HATs use the same `RPI_40` hardware profile — the only difference is the
+display driver setting:
+
+| HAT | Display setting | Driver |
+|-----|----------------|--------|
+| 1.3" LCD HAT (240×240) | `st7789_240x240` (default) | `ST7789.py` |
+| 1.44" LCD HAT (128×128) | `st7735_128x128` | `ST7735.py` |
+
+To use the 1.44" HAT, change the **Display type** setting to `st7735 128x128`
+(or use a SettingsQR with `disp_conf=st7735_128x128`).
 
 ### CS and the three wiring options
 

src/seedsigner/gui/keyboard.py

@@ -179,7 +179,7 @@ def __init__(self,
  selected_char="a",
  rows=4,
  cols=10,
- rect=(0,40, 240,240),
+ rect=None,
  additional_keys=[KEY_BACKSPACE],
  auto_wrap=[WRAP_TOP, WRAP_BOTTOM, WRAP_LEFT, WRAP_RIGHT],
  render_now=True,
@@ -192,6 +192,10 @@ def __init__(self,
  self.charset = charset
  self.rows = rows
  self.cols = cols
+ if rect is None:
+ from seedsigner.gui.renderer import Renderer
+ renderer = Renderer.get_instance()
+ rect = (0, GUIConstants.TOP_NAV_HEIGHT, renderer.canvas_width, renderer.canvas_height)
  self.rect = rect
  self.font = Fonts.get_font(font_name, font_size)
 

src/seedsigner/gui/renderer.py

@@ -6,6 +6,7 @@
  DISPLAY_TYPE__ILI9341,
  DISPLAY_TYPE__ILI9486,
  DISPLAY_TYPE__ST7789,
+ DISPLAY_TYPE__ST7735,
  DISPLAY_TYPE__DESKTOP,
  DisplayDriver,
 )
@@ -23,6 +24,8 @@ class Renderer(ConfigurableSingleton):
  draw: ImageDraw.ImageDraw = None
  disp = None
  lock = Lock()
+ _needs_resize = False
+ _display_size = (0, 0)
 
 
  @classmethod
@@ -60,21 +63,42 @@ def initialize_display(self):
  self.canvas_width = self.disp.width
  self.canvas_height = self.disp.height
 
+ elif self.display_type == DISPLAY_TYPE__ST7735:
+ # The UI is designed for 240×240; render at that resolution
+ # and downscale to the physical 128×128 display in
+ # show_image().
+ self.canvas_width = 240
+ self.canvas_height = 240
+
  elif self.display_type in [DISPLAY_TYPE__ILI9341, DISPLAY_TYPE__ILI9486]:
  # Swap for the natively portrait-oriented displays
  self.canvas_width = self.disp.height
  self.canvas_height = self.disp.width
 
+ self._needs_resize = (
+ self.canvas_width != self.disp.width
+ or self.canvas_height != self.disp.height
+ )
+ self._display_size = (self.disp.width, self.disp.height)
+
  self.canvas = Image.new('RGB', (self.canvas_width, self.canvas_height))
  self.draw = ImageDraw.Draw(self.canvas)
  finally:
  self.lock.release()
 
 
+ def _resize_for_display(self, image):
+ """Downscale *image* to the physical display size when the canvas is
+ larger than the display (e.g. 240×240 canvas on a 128×128 ST7735)."""
+ if self._needs_resize:
+ return image.resize(self._display_size, Image.LANCZOS)
+ return image
+
+
  def show_image(self, image=None, alpha_overlay=None, show_direct=False):
  if show_direct:
  # Use the incoming image as the canvas and immediately render
- self.disp.show_image(image, 0, 0)
+ self.disp.show_image(self._resize_for_display(image), 0, 0)
  return
 
  if alpha_overlay:
@@ -86,7 +110,7 @@ def show_image(self, image=None, alpha_overlay=None, show_direct=False):
  # Always write to the current canvas, rather than trying to replace it
  self.canvas.paste(image)
 
- self.disp.show_image(self.canvas, 0, 0)
+ self.disp.show_image(self._resize_for_display(self.canvas), 0, 0)
 
 
  def show_image_pan(self, image, start_x, start_y, end_x, end_y, rate, alpha_overlay=None):
@@ -120,7 +144,7 @@ def show_image_pan(self, image, start_x, start_y, end_x, end_y, rate, alpha_over
  # Always keep a copy of the current display in the canvas
  self.canvas.paste(crop)
 
- self.disp.show_image(crop, 0, 0)
+ self.disp.show_image(self._resize_for_display(crop), 0, 0)
 
 
 

src/seedsigner/gui/screens/screen.py

@@ -866,7 +866,7 @@ def run(self):
  # Display the brightness tips toast
  duration = 10 ** 9 * 1.2 # 1.2 seconds
  if is_brightness_tip_enabled and time.time_ns() - self.tips_start_time.cur_count < duration:
- image = self.qr_encoder.part_to_image(self.qr_encoder.cur_part(), 240, 240, border=2, background_color=hex_color)
+ image = self.qr_encoder.part_to_image(self.qr_encoder.cur_part(), self.renderer.canvas_width, self.renderer.canvas_height, border=2, background_color=hex_color)
  self.render_brightness_tip(image)
  pending_encoder_restart = True
  else:
@@ -876,7 +876,7 @@ def run(self):
  # brightness tip is stowed.
  self.qr_encoder.restart()
  pending_encoder_restart = False
- image = self.qr_encoder.next_part_image(240, 240, border=2, background_color=hex_color)
+ image = self.qr_encoder.next_part_image(self.renderer.canvas_width, self.renderer.canvas_height, border=2, background_color=hex_color)
 
  with self.renderer.lock:
  self.renderer.show_image(image)