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feat: tweak mosaic cover layout to use black background and bound image area

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Made-with: Cursor
This commit is contained in:
cottongin
2026-04-06 20:24:28 -04:00
parent da5792ceae
commit 836e4060bb
1 changed files with 16 additions and 7 deletions
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23
src/cover.py
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@@ -114,21 +114,28 @@ def generate_mosaic_cover(
) -> str:
os.makedirs(output_dir, exist_ok=True)
w, h = config.COVER_SIZE
img = PILImage.new("RGBA", (w, h), color=(245, 245, 245, 255))
img = PILImage.new("RGBA", (w, h), color=(0, 0, 0, 255))
bottom_headlines_height = 0
if headlines:
bottom_headlines_height = 28 + min(len(headlines), 5) * 26
mosaic_h = h - 90 - bottom_headlines_height
mosaic_canvas = PILImage.new("RGBA", (w, mosaic_h), color=(0, 0, 0, 255))
if len(image_paths) == 1:
# Single image case
try:
with PILImage.open(image_paths[0]) as source_img:
source_img = source_img.convert("RGBA")
# Resize to fit within 480x800 preserving aspect ratio
ratio = min(w / source_img.width, h / source_img.height)
# Resize to fit within 480x(mosaic_h) preserving aspect ratio
ratio = min(w / source_img.width, mosaic_h / source_img.height)
new_size = (int(source_img.width * ratio), int(source_img.height * ratio))
resized = source_img.resize(new_size, PILImage.Resampling.LANCZOS)
# Center it
x = (w - new_size[0]) // 2
y = (h - new_size[1]) // 2
img.paste(resized, (x, y), resized)
y = (mosaic_h - new_size[1]) // 2
mosaic_canvas.paste(resized, (x, y), resized)
except Exception as e:
logger.error("Failed to process single image for cover: %s", e)
elif len(image_paths) > 1:
@@ -137,7 +144,7 @@ def generate_mosaic_cover(
col_heights = [4, 4]
for path in image_paths:
if col_heights[0] > h and col_heights[1] > h:
if col_heights[0] > mosaic_h and col_heights[1] > mosaic_h:
break # Both columns full
try:
@@ -150,11 +157,13 @@ def generate_mosaic_cover(
x = 4 + col_idx * (col_width + 4)
y = col_heights[col_idx]
img.paste(resized, (x, y), resized)
mosaic_canvas.paste(resized, (x, y), resized)
col_heights[col_idx] += new_h + 4
except Exception as e:
logger.error("Failed to process image %s for mosaic: %s", path, e)
img.paste(mosaic_canvas, (0, 90))
draw = ImageDraw.Draw(img)
_draw_text_overlays(draw, w, h, week_start, week_end, headlines)