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feat: use freetype for proper BDF font support

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ChuckBuilds
2025-04-22 20:03:07 -05:00
parent 608dd87a6a
commit aceb1acefb
1 changed files with 23 additions and 14 deletions
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37
src/font_test_manager.py
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@@ -1,6 +1,7 @@
import os import os
import time import time
from PIL import Image, ImageDraw, ImageFont import freetype
from PIL import Image, ImageDraw
import logging import logging
from typing import Dict, Any from typing import Dict, Any
from src.display_manager import DisplayManager from src.display_manager import DisplayManager
@@ -24,6 +25,10 @@ class FontTestManager:
self.logger.error(f"Font file not found: {self.font_path}") self.logger.error(f"Font file not found: {self.font_path}")
raise FileNotFoundError(f"Font file not found: {self.font_path}") raise FileNotFoundError(f"Font file not found: {self.font_path}")
# Load the font
self.face = freetype.Face(self.font_path)
self.face.set_char_size(self.font_size * 64) # Size is in 1/64th of points
self.logger.info("Initialized FontTestManager with tom-thumb font") self.logger.info("Initialized FontTestManager with tom-thumb font")
def update(self): def update(self):
@@ -40,9 +45,6 @@ class FontTestManager:
width = self.display_manager.matrix.width width = self.display_manager.matrix.width
height = self.display_manager.matrix.height height = self.display_manager.matrix.height
# Load the BDF font
font = ImageFont.truetype(self.font_path, self.font_size)
# Draw font name at the top # Draw font name at the top
self.display_manager.draw_text("tom-thumb", y=2, color=(255, 255, 255)) self.display_manager.draw_text("tom-thumb", y=2, color=(255, 255, 255))
@@ -50,17 +52,24 @@ class FontTestManager:
draw = ImageDraw.Draw(self.display_manager.image) draw = ImageDraw.Draw(self.display_manager.image)
sample_text = "ABCDEFGHIJKLMNOPQRSTUVWXYZ" sample_text = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
# Get text dimensions # Calculate starting position
bbox = draw.textbbox((0, 0), sample_text, font=font) x = 10 # Start 10 pixels from the left
text_width = bbox[2] - bbox[0] y = (height - self.font_size) // 2 # Center vertically
text_height = bbox[3] - bbox[1]
# Calculate position to center the text # Draw each character
x = (width - text_width) // 2 for char in sample_text:
y = (height - text_height) // 2 # Load the glyph
self.face.load_char(char)
# Draw the text bitmap = self.face.glyph.bitmap
draw.text((x, y), sample_text, font=font, fill=(255, 255, 255))
# Draw the glyph
for i in range(bitmap.rows):
for j in range(bitmap.width):
if bitmap.buffer[i * bitmap.width + j]:
draw.point((x + j, y + i), fill=(255, 255, 255))
# Move to next character position
x += self.face.glyph.advance.x >> 6
# Update the display once # Update the display once
self.display_manager.update_display() self.display_manager.update_display()