Defect #26379
Fix thumbnail rendering for images with height >> width
| Status: | Closed | Start date: | ||
|---|---|---|---|---|
| Priority: | Normal | Due date: | ||
| Assignee: |  Jean-Philippe Lang | % Done: | 0% | |
| Category: | Attachments | |||
| Target version: | 3.4.2 | |||
| Resolution: | Fixed | Affected version: | 3.4.0 |
Description
The ImageMagick format rule being `100x100>` (given 100 as thumbnail size in settings), when uploading images with a height much greater than the width (like websites templates) the thumbnail will have a height of 100px and a computed width so homothety is respected.
In the `thumbnail_tag` helper from `ApplicationHelper`, the width attribute is set width `Setting.thumbnails_size`. I suggest to remove this attribute from the image tag since the source thumbnail has the right size.
Am I missing some cases where this change could have an important impact ?
very high image example.jpg (89.6 KB)
26379-3_3@2x.png (15.7 KB)
26379-3_4@2x.png (64.6 KB)
defect-26379.diff 
(775 Bytes)
Associated revisions
Fix thumbnail rendering for images with height >> width.
History
#1
Updated by Pavel Rosický 10 months ago
you can disable imagemagick and then you won't be able to resize thumbnails
bundle install --without rmagick
#2
Updated by Go MAEDA 10 months ago
Gabriel Cardoso wrote:
In the `thumbnail_tag` helper from `ApplicationHelper`, the width attribute is set width `Setting.thumbnails_size`. I suggest to remove this attribute from the image tag since the source thumbnail has the right size.
The width attribute is workaround for strange behavior of Firefox. Please see #24927#note-6 and #24927#note-8 for details.
#4
Updated by Go MAEDA 10 months ago
- File 26379-3_3@2x.png added
- File 26379-3_4@2x.png added
Redmine 3.3 (displayed with 25px * 100px):
Redmine 3.4 (displayed with 100px * 392px):
#5
Updated by Go MAEDA 10 months ago
- File defect-26379.diff added
- Target version set to 3.4.1
Here is a patch to fix this issue.
Thumbnails are displayed in the same way as in Redmine 3.3 if the patch applied.
#6
Updated by Jean-Philippe Lang 10 months ago
- Target version changed from 3.4.1 to 3.4.2
Waiting for some feedback before merging it.
#7
Updated by Gabriel Cardoso 10 months ago
- Status changed from New to Resolved
Perfect ! Thank you !
Indeed, your approach is better and solve the proble. Hope it doesn't break #24927#note-6 and #24927#note-8 on Firefox
#8
Updated by Go MAEDA 10 months ago
- Status changed from Resolved to Confirmed
Gabriel Cardoso wrote:
Indeed, your approach is better and solve the proble. Hope it doesn't break #24927#note-6 and #24927#note-8 on Firefox
No problem. Setting both max-width and max-height resolved #24927#note-6.
Thank you for your feedback!
"Resolved" status is used by core developers, I am setting the status to "Confirmed".
#9
Updated by Jean-Philippe Lang 10 months ago
- Subject changed from Fix thumbnail rendering to Fix thumbnail rendering for images with height >> width
- Status changed from Confirmed to Resolved
- Assignee set to Jean-Philippe Lang
- Resolution set to Fixed
Patch committed, thanks.
#10
Updated by Jean-Philippe Lang 9 months ago
- Status changed from Resolved to Closed