From 32ff6e67e709e8597674427a629dc6dc6bd71d1c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jes=C3=BAs=20Espino?= <jespinog@gmail.com>
Date: Tue, 17 Jan 2017 14:18:18 +0100
Subject: [PATCH] Adding support for preview svg and psd images

---
 CHANGELOG.md                              | 4 ++--
 settings/common.py                        | 3 +++
 taiga/projects/attachments/serializers.py | 6 ++++++
 taiga/projects/attachments/services.py    | 5 +++++
 4 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 570f8314..bbc26535 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,8 +8,8 @@
 - Ability to create rich text custom fields in Epics, User Stories, Tasks and Isues.
 - Full text search now use simple as tokenizer so search with non-english text are allowed.
 - Duplicate project: allows creating a new project based on the structure of another (status, tags, colors, default values...)
-- Add thumbnails for PSD files.
-- Add thumbnails for SVG files (Cario lib is needed).
+- Add thumbnails and preview for PSD files.
+- Add thumbnails and preview for SVG files (Cario lib is needed).
 - i18n:
   - Add japanese (ja) translation.
   - Add korean (ko) translation.
diff --git a/settings/common.py b/settings/common.py
index 0f5911f9..b4c9e002 100644
--- a/settings/common.py
+++ b/settings/common.py
@@ -483,6 +483,7 @@ THN_LOGO_BIG_SIZE = 300             # 300x300 pixels
 THN_TIMELINE_IMAGE_SIZE = 640       # 640x??? pixels
 THN_CARD_IMAGE_WIDTH = 300          # 300 pixels
 THN_CARD_IMAGE_HEIGHT = 200         # 200 pixels
+THN_PREVIEW_IMAGE_WIDTH = 800       # 800 pixels
 
 THN_AVATAR_SMALL = "avatar"
 THN_AVATAR_BIG = "big-avatar"
@@ -490,6 +491,7 @@ THN_LOGO_SMALL = "logo-small"
 THN_LOGO_BIG = "logo-big"
 THN_ATTACHMENT_TIMELINE = "timeline-image"
 THN_ATTACHMENT_CARD = "card-image"
+THN_ATTACHMENT_PREVIEW = "preview-image"
 
 THUMBNAIL_ALIASES = {
     "": {
@@ -499,6 +501,7 @@ THUMBNAIL_ALIASES = {
         THN_LOGO_BIG: {"size": (THN_LOGO_BIG_SIZE, THN_LOGO_BIG_SIZE), "crop": True},
         THN_ATTACHMENT_TIMELINE: {"size": (THN_TIMELINE_IMAGE_SIZE, 0), "crop": True},
         THN_ATTACHMENT_CARD: {"size": (THN_CARD_IMAGE_WIDTH, THN_CARD_IMAGE_HEIGHT), "crop": True},
+        THN_ATTACHMENT_PREVIEW: {"size": (THN_PREVIEW_IMAGE_WIDTH, 0), "crop": False},
     },
 }
 
diff --git a/taiga/projects/attachments/serializers.py b/taiga/projects/attachments/serializers.py
index ce8893b7..17176466 100644
--- a/taiga/projects/attachments/serializers.py
+++ b/taiga/projects/attachments/serializers.py
@@ -42,6 +42,7 @@ class AttachmentSerializer(serializers.LightSerializer):
     sha1 = Field()
     url = MethodField("get_url")
     thumbnail_card_url = MethodField("get_thumbnail_card_url")
+    preview_url = MethodField("get_preview_url")
 
     def get_url(self, obj):
         return obj.attached_file.url
@@ -49,6 +50,11 @@ class AttachmentSerializer(serializers.LightSerializer):
     def get_thumbnail_card_url(self, obj):
         return services.get_card_image_thumbnail_url(obj)
 
+    def get_preview_url(self, obj):
+        if obj.name.endswith(".psd"):
+            return services.get_attachment_image_preview_url(obj)
+        return self.get_url(obj)
+
 
 class BasicAttachmentsInfoSerializerMixin(serializers.LightSerializer):
     """
diff --git a/taiga/projects/attachments/services.py b/taiga/projects/attachments/services.py
index b3305552..80f4afc3 100644
--- a/taiga/projects/attachments/services.py
+++ b/taiga/projects/attachments/services.py
@@ -28,3 +28,8 @@ def get_card_image_thumbnail_url(attachment):
     if attachment.attached_file:
         return get_thumbnail_url(attachment.attached_file, settings.THN_ATTACHMENT_CARD)
     return None
+
+def get_attachment_image_preview_url(attachment):
+    if attachment.attached_file:
+        return get_thumbnail_url(attachment.attached_file, settings.THN_ATTACHMENT_PREVIEW)
+    return None