From 486f5d1ca6a1f50561714db87e30ce72be428976 Mon Sep 17 00:00:00 2001
From: Fatimah Zulfiqar <fatimah0zulfiqar@gmail.com>
Date: Wed, 21 Aug 2024 14:51:28 +0200
Subject: [PATCH] resize: added upscaling params for h & w

---
 flask_iiif/api.py | 24 ++++++++++++++++++------
 1 file changed, 18 insertions(+), 6 deletions(-)

diff --git a/flask_iiif/api.py b/flask_iiif/api.py
index d702865..243ed01 100644
--- a/flask_iiif/api.py
+++ b/flask_iiif/api.py
@@ -152,9 +152,13 @@ def resize(self, dimensions, resample=None):
             width = max(1, int(real_width * percent))
             height = max(1, int(real_height * percent))
 
-        # Check if it is `,h`
-        elif dimensions.startswith(","):
-            height = int(dimensions[1:])
+        # Check if it is `,h` or `^,h`
+        elif dimensions.startswith(",") or dimensions.startswith("^,"):
+            if dimensions.startswith(","):  # Handle `,h`
+                height = int(dimensions[1:])
+            else:  # Handle `^,h`
+                height = int(dimensions[2:])
+
             # find the ratio
             ratio = self.reduce_by(height, real_height)
             # calculate width (minimum 1)
@@ -172,9 +176,17 @@ def resize(self, dimensions, resample=None):
             width = max(1, int(real_width * ratio))
             height = max(1, int(real_height * ratio))
 
-        # Check if it is `w,`
-        elif dimensions.endswith(","):
-            width = int(dimensions[:-1])
+        # Check if it is `w,` or `^w,`
+        elif dimensions.endswith(",") or (
+            (dimensions.startswith("^") and dimensions.endswith(","))
+        ):
+            if dimensions.endswith(",") and not dimensions.startswith(
+                "^"
+            ):  # Handle `w,`
+                width = int(dimensions[:-1])
+            else:  # Handle `^w,`
+                width = int(dimensions[1:-1])
+
             # find the ratio
             ratio = self.reduce_by(width, real_width)
             # calculate the height