Add display/font_manager.py

display/font_manager.py

@@ -0,0 +1,25 @@
+from PIL import ImageFont
+
+class FontManager:
+    def __init__(self, size=12):
+        self.font = ImageFont.truetype("/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf", size)
+
+    def set_font_size(self, size):
+        self.font = ImageFont.truetype("/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf", size)
+
+    def draw_multiline_text(self, draw, text, x, y, width, height):
+        lines = []
+        words = text.split(" ")
+        line = ""
+        for word in words:
+            test = f"{line} {word}".strip()
+            if draw.textlength(test, font=self.font) <= width:
+                line = test
+            else:
+                lines.append(line)
+                line = word
+        lines.append(line)
+
+        draw.rectangle((0, 0, width, height), outline=0, fill=0)
+        for idx, line in enumerate(lines):
+            draw.text((x, y + idx * self.font.size), line, font=self.font, fill=255)