Files
epub-to-manga/manga/speech_bubbles.py
T
2026-04-13 18:03:33 -07:00

116 lines
3.4 KiB
Python

import textwrap
from PIL import Image, ImageDraw, ImageFont
import os
MAX_BUBBLES = 3
MAX_LINE_WIDTH = 22
BUBBLE_PADDING = 14
FONT_SIZE = 22
TAIL_SIZE = 14
def get_font(size=FONT_SIZE):
candidates = [
"/System/Library/Fonts/Helvetica.ttc",
"/System/Library/Fonts/Arial.ttf",
"/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf",
"/usr/share/fonts/truetype/liberation/LiberationSans-Regular.ttf",
]
for path in candidates:
if os.path.exists(path):
try:
return ImageFont.truetype(path, size)
except Exception:
pass
return ImageFont.load_default()
def wrap_text(text, max_width=MAX_LINE_WIDTH):
return textwrap.fill(text, max_width)
def draw_bubble(draw, x, y, w, h, tail_side="bottom"):
r = 16
draw.rounded_rectangle([x, y, x+w, y+h], radius=r, fill="white", outline="black", width=3)
if tail_side == "bottom":
tx = x + w // 2
ty = y + h
draw.polygon([
(tx - TAIL_SIZE, ty - 4),
(tx + TAIL_SIZE, ty - 4),
(tx, ty + TAIL_SIZE),
], fill="white")
draw.line([(tx - TAIL_SIZE, ty - 4), (tx, ty + TAIL_SIZE)], fill="black", width=3)
draw.line([(tx + TAIL_SIZE, ty - 4), (tx, ty + TAIL_SIZE)], fill="black", width=3)
elif tail_side == "top":
tx = x + w // 2
ty = y
draw.polygon([
(tx - TAIL_SIZE, ty + 4),
(tx + TAIL_SIZE, ty + 4),
(tx, ty - TAIL_SIZE),
], fill="white")
draw.line([(tx - TAIL_SIZE, ty + 4), (tx, ty - TAIL_SIZE)], fill="black", width=3)
draw.line([(tx + TAIL_SIZE, ty + 4), (tx, ty - TAIL_SIZE)], fill="black", width=3)
def add_speech_bubbles(img_path, dialogue):
if not dialogue:
return
entries = [d for d in dialogue if d.get("line", "").strip()][:MAX_BUBBLES]
if not entries:
return
img = Image.open(img_path).convert("RGB")
draw = ImageDraw.Draw(img)
font = get_font(FONT_SIZE)
small_font = get_font(FONT_SIZE - 6)
iw, ih = img.size
margin = 18
zones = [
ih // 8,
ih * 5 // 8,
ih // 4,
]
for i, entry in enumerate(entries):
speaker = entry.get("speaker", "").strip()
line = entry.get("line", "").strip()
if not line:
continue
wrapped = wrap_text(line)
bbox = draw.textbbox((0, 0), wrapped, font=font)
text_w = bbox[2] - bbox[0]
text_h = bbox[3] - bbox[1]
if speaker and speaker != "?":
spk_bbox = draw.textbbox((0, 0), speaker, font=small_font)
spk_h = spk_bbox[3] - spk_bbox[1] + 4
else:
spk_h = 0
bw = min(text_w + BUBBLE_PADDING * 2, iw - margin * 2)
bh = text_h + spk_h + BUBBLE_PADDING * 2
x_offset = margin if i % 2 == 0 else iw - bw - margin
by = zones[i % len(zones)]
by = max(margin, min(by, ih - bh - margin))
tail = "bottom" if by < ih // 2 else "top"
draw_bubble(draw, x_offset, by, bw, bh, tail_side=tail)
if speaker and speaker != "?":
draw.text((x_offset + BUBBLE_PADDING, by + BUBBLE_PADDING), speaker, font=small_font, fill="#444444")
draw.text(
(x_offset + BUBBLE_PADDING, by + BUBBLE_PADDING + spk_h),
wrapped,
font=font,
fill="black",
)
img.save(img_path)