Merge pull request '让豆包水印使用相对大小' (#47) from feature/doubao-watermark into master

Reviewed-on: #47

konabot/plugins/memepack/drawing/watermark.py

@@ -4,12 +4,17 @@ import PIL.Image
 from konabot.common.path import ASSETS_PATH
 from konabot.common.utils.to_async import make_async
 
-doubao_watermark = PIL.Image.open(ASSETS_PATH / "img" / "meme" / "doubao.png").convert("RGBA").resize((140, 40))
+doubao_watermark = PIL.Image.open(ASSETS_PATH / "img" / "meme" / "doubao.png").convert("RGBA")
 
 
 @make_async
 def draw_doubao_watermark(base: PIL.Image.Image) -> PIL.Image.Image:
     base = base.copy().convert("RGBA")
-    base.alpha_composite(doubao_watermark, (base.size[0] - 160, base.size[1] - 60))
+    w = base.size[0] / 768 * 140
+    h = base.size[0] / 768 * 40
+    x = base.size[0] / 768 * 160
+    y = base.size[0] / 768 * 60
+    w, h, x, y = map(int, (w, h, x, y))
+    base.alpha_composite(doubao_watermark.resize((w, h)), (base.size[0] - x, base.size[1] - y))
     return base