Text size is now reduced before being truncated if min and max sizes are given in the config.

lib/open_project/pdf_export/export_card/column_element.rb

@@ -25,7 +25,27 @@ module OpenProject::PdfExport::ExportCard
       text = text + "#{@work_package.class.human_attribute_name(@property_name)}: " if has_label
       text = text + value
 
-      font_size = Integer(@config['font_size']) # TODO: Not safe!
+      # Font size
+      if @config['font_size']
+        # Specific size given
+        overflow = :truncate
+        font_size = Integer(@config['font_size'])
+
+      elsif @config['min_font_size']
+        # Range given
+        overflow = :shrink_to_fit
+        min_font_size = Integer(@config['min_font_size'])
+        font_size = if @config['max_font_size']
+                      Integer(@config['max_font_size'])
+                    else
+                      min_font_size
+                    end
+      else
+        # Default
+        font_size = 12
+        overflow = :truncate
+      end
+
       font_style = (@config['font_style'] or "normal").to_sym
       text_align = (@config['text_align'] or "left").to_sym
 
@@ -35,9 +55,10 @@ module OpenProject::PdfExport::ExportCard
         {:height => @orientation[:height],
          :width => @orientation[:width],
          :at => offset,
-         :size => font_size,
          :style => font_style,
-         :overflow => :truncate,
+         :overflow => overflow,
+         :size => font_size,
+         :min_font_size => min_font_size,
          :align => text_align})
     end