Normalize sponsor logos on the sponsors page (#1964)

Author: ewdurbin

sponsors/templatetags/sponsors.py

@@ -1,3 +1,5 @@
+import math
+
 from collections import OrderedDict
 from django import template
 from django.conf import settings
@@ -69,3 +71,11 @@ def benefit_quantity_for_package(benefit, package):
 @register.simple_tag
 def benefit_name_for_display(benefit, package):
     return benefit.name_for_display(package=package)
+
+
+@register.filter
+def ideal_size(image, ideal_dimension):
+    ideal_dimension = int(ideal_dimension)
+    return int(
+        image.width * math.sqrt((100 * ideal_dimension) / (image.width * image.height))
+    )

templates/sponsors/partials/sponsors-list.html

@@ -1,5 +1,6 @@
 {% load thumbnail %}
 {% load cache %}
+{% load sponsors %}
 
 
 {% if logo_place == "download" %}
@@ -46,7 +47,7 @@ <h1 style="font-size: {% if forloop.first %}350%{% else %}300%{% endif %}">{{ pa
       <div id={{ sponsorship.sponsor.name|slugify }}>
         <a href="{{ sponsorship.sponsor.landing_page_url }}">
          {% thumbnail sponsorship.sponsor.web_logo thumbnail_res format="PNG" quality=100 as im %}
-             <img src="{{ im.url }}" alt="{{ sponsorship.sponsor.name }} logo" style="max-height:{{ im.height }}px;max-width:{{ im.width }}px;height:auto;width:auto;">
+             <img src="{{ im.url }}" alt="{{ sponsorship.sponsor.name }} logo" style="max-width:{{ im|ideal_size:dimension }}px;height:auto;width:auto;">
          {% endthumbnail %}
         </a>