From a316da89b9c2d1bca66bbb64572f9ba9e03f2f95 Mon Sep 17 00:00:00 2001
From: hkc <hatkidchan@gmail.com>
Date: Tue, 17 Oct 2023 14:40:09 +0300
Subject: [PATCH] thumbnail -> fill rectangle

---
 cc-pic.py | 19 +++++++++++--------
 1 file changed, 11 insertions(+), 8 deletions(-)

diff --git a/cc-pic.py b/cc-pic.py
index e31f227..83dd74f 100644
--- a/cc-pic.py
+++ b/cc-pic.py
@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-# x-run: python3 % ~/downloads/kanade/6bf3cdae12b75326e3c23af73105e5781e42e94e.jpg
+# x-run: python3 % ~/downloads/kanade/6bf3cdae12b75326e3c23af73105e5781e42e94e.jpg n25.cpi
 
 from typing import BinaryIO, TextIO
 from PIL import Image
@@ -33,10 +33,8 @@ class Converter:
 
     MAX_DIFF = (3 ** 0.5) * 255
 
-    def __init__(self, image: Image.Image, size: tuple[int, int]):
-        self._img = image.copy()
-        self._img.thumbnail(( size[0] * 2, size[1] * 3 ))
-        self._img = self._img.convert("P", palette=Image.ADAPTIVE, colors=16)
+    def __init__(self, image: Image.Image):
+        self._img = image.convert("P", palette=Image.ADAPTIVE, colors=16)
         self._palette: list[int] = self._img.getpalette()  # type: ignore
 
     def _brightness(self, i: int) -> float:
@@ -119,9 +117,14 @@ class Converter:
 
 
 def main(fp_in, fp_out):
-    with Image.open(fp_in) as img:
-        with open(fp_out, "wb") as fp:
-            Converter(img, (164, 81)).export_binary(fp)
+    size = 143 * 2, 81 * 3 # 286, 243
+    with Image.new("RGB", size) as canv:
+        with Image.open(fp_in) as img:
+            scale = max(img.width / size[0], img.height / size[0])
+            img = img.resize((int(img.width / scale), int(img.height / scale)))
+            canv.paste(img, ((canv.width - img.width) // 2, (canv.height - img.height) // 2))
+            with open(fp_out, "wb") as fp:
+                Converter(canv).export_binary(fp)
 
 if __name__ == "__main__":
     main(argv[1], argv[2])