From 83b8243d395ff73c0ddfd9491d7e25e59479fcb5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jes=C3=BAs=20Espino?= <jespinog@gmail.com>
Date: Mon, 29 Jun 2015 16:05:42 +0200
Subject: [PATCH] Issue#2884: Crop images for the timeline

---
 settings/common.py                    |  2 ++
 taiga/projects/history/freeze_impl.py | 14 ++++++++++++--
 taiga/projects/history/models.py      |  3 ++-
 3 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/settings/common.py b/settings/common.py
index a8c88c41..1a441e92 100644
--- a/settings/common.py
+++ b/settings/common.py
@@ -409,11 +409,13 @@ SOUTH_MIGRATION_MODULES = {
 
 DEFAULT_AVATAR_SIZE = 80                # 80x80 pixels
 DEFAULT_BIG_AVATAR_SIZE = 300           # 300x300 pixels
+DEFAULT_TIMELINE_IMAGE_SIZE = 640       # 640x??? pixels
 
 THUMBNAIL_ALIASES = {
     '': {
         'avatar': {'size': (DEFAULT_AVATAR_SIZE, DEFAULT_AVATAR_SIZE), 'crop': True},
         'big-avatar': {'size': (DEFAULT_BIG_AVATAR_SIZE, DEFAULT_BIG_AVATAR_SIZE), 'crop': True},
+        'timeline-image': {'size': (DEFAULT_TIMELINE_IMAGE_SIZE, 0), 'crop': True},
     },
 }
 
diff --git a/taiga/projects/history/freeze_impl.py b/taiga/projects/history/freeze_impl.py
index 1e1038cb..a591c666 100644
--- a/taiga/projects/history/freeze_impl.py
+++ b/taiga/projects/history/freeze_impl.py
@@ -21,6 +21,10 @@ from django.apps import apps
 from django.contrib.contenttypes.models import ContentType
 from django.core.exceptions import ObjectDoesNotExist
 
+from easy_thumbnails.files import get_thumbnailer
+from easy_thumbnails.exceptions import InvalidImageFormatError
+
+from taiga.base.utils.urls import get_absolute_url
 from taiga.base.utils.iterators import as_tuple
 from taiga.base.utils.iterators import as_dict
 from taiga.mdrender.service import render as mdrender
@@ -100,7 +104,7 @@ def project_values(diff):
     values = _common_users_values(diff)
     return values
 
-    
+
 def milestone_values(diff):
     values = _common_users_values(diff)
     return values
@@ -179,10 +183,16 @@ def _generic_extract(obj:object, fields:list, default=None) -> dict:
 @as_tuple
 def extract_attachments(obj) -> list:
     for attach in obj.attachments.all():
+        try:
+            thumb_url = get_thumbnailer(attach.attached_file)['timeline-image'].url
+            thumb_url = get_absolute_url(thumb_url)
+        except InvalidImageFormatError as e:
+            thumb_url = None
+
         yield {"id": attach.id,
                "filename": os.path.basename(attach.attached_file.name),
                "url": attach.attached_file.url,
-               "description": attach.description,
+               "thumb_url": thumb_url,
                "is_deprecated": attach.is_deprecated,
                "description": attach.description,
                "order": attach.order}
diff --git a/taiga/projects/history/models.py b/taiga/projects/history/models.py
index 48b890fb..82d1667d 100644
--- a/taiga/projects/history/models.py
+++ b/taiga/projects/history/models.py
@@ -182,12 +182,13 @@ class HistoryEntry(models.Model):
                 for aid in set(tuple(oldattachs.keys()) + tuple(newattachs.keys())):
                     if aid in oldattachs and aid in newattachs:
                         changes = make_diff_from_dicts(oldattachs[aid], newattachs[aid],
-                                                       excluded_keys=("filename", "url"))
+                                                       excluded_keys=("filename", "url", "thumb_url"))
 
                         if changes:
                             change = {
                                 "filename": newattachs.get(aid, {}).get("filename", ""),
                                 "url": newattachs.get(aid, {}).get("url", ""),
+                                "thumb_url": newattachs.get(aid, {}).get("thumb_url", ""),
                                 "changes": changes
                             }
                             attachments["changed"].append(change)