Display IDs with linebreaks correctly.

plotid/tagplot.py

@@ -103,7 +103,7 @@ def tagplot(
             position = (0.35, 0.975)
         case "east":
             rotation = 90
-            position = (0.975, 0.35)
+            position = (0.95, 0.35)
         case "south":
             rotation = 0
             position = (0.35, 0.015)

plotid/tagplot_image.py

 # -*- coding: utf-8 -*-
-"""
-Tag your picture with an ID.
-
-Functions:
-    tagplot_image(PlotOptions instance) -> PlotIDTransfer instance
-"""
+"""Tag your picture with an ID."""
 import os
 import warnings
-from PIL import Image, ImageDraw, ImageFont, ImageOps
+from PIL import Image, ImageDraw, ImageFont
 from plotid.create_id import create_id, create_qrcode
 from plotid.plotoptions import PlotOptions, PlotIDTransfer
 
@@ -63,15 +58,24 @@ def tagplot_image(plotid_object: PlotOptions) -> PlotIDTransfer:
         img = Image.open(img)
 
         if plotid_object.id_on_plot:
-            img_txt = Image.new("L", font.getsize(img_id))
+            # Create temporary PIL image to get correct textsize
+            tmp_img = Image.new("L", (100, 100))
+            tmp_draw = ImageDraw.Draw(tmp_img)
+            textsize = tmp_draw.textsize(img_id, font)
+
+            # Create new image with white background and the size of the textbox
+            img_txt = Image.new("RGBA", textsize, color=(255, 255, 255, 0))
             draw_txt = ImageDraw.Draw(img_txt)
-            draw_txt.text((0, 0), img_id, font=font, fill=255)
+            draw_txt.text((0, 0), img_id, font=font, fill=color)
+            # Rotate the image by the given angle
             txt = img_txt.rotate(plotid_object.rotation, expand=1)
+
+            # Paste the txt/ID image with transparent background onto the original image
             img.paste(
-                ImageOps.colorize(txt, (0, 0, 0), color),
+                txt,
                 (
                     int(img.width * plotid_object.position[0]),
-                    int(img.height * (1 - plotid_object.position[1])),
+                    int(img.height * (1 - plotid_object.position[1]) - txt.height),
                 ),
                 txt,
             )