Bug 108450 - Shrinking of grow/shrink custom animation effect does not work
Summary: Shrinking of grow/shrink custom animation effect does not work
Status: NEW
Alias: None
Product: LibreOffice
Classification: Unclassified
Component: Impress (show other bugs)
Version:
(earliest affected)
6.0.0.0.alpha0+
Hardware: All All
: medium normal
Assignee: Not Assigned
URL:
Whiteboard: target:6.0.0 target:7.2.0
Keywords:
Depends on:
Blocks: Sidebar-Animation
  Show dependency treegraph
 
Reported: 2017-06-10 19:12 UTC by Iceflower S
Modified: 2023-05-20 03:17 UTC (History)
7 users (show)

See Also:
Crash report or crash signature:


Attachments
Shrink using smil:to attribute (67.61 KB, application/vnd.oasis.opendocument.presentation-flat-xml)
2017-06-11 15:16 UTC, Regina Henschel
Details
shrink using smil:by attribute (67.61 KB, application/vnd.oasis.opendocument.presentation-flat-xml)
2017-06-11 15:16 UTC, Regina Henschel
Details

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Description Iceflower S 2017-06-10 19:12:30 UTC
Description:
Shrink/ gow animation effect of Impress only grows, no matter which value.

@Buovjaga

Steps to Reproduce:
1. Add an Object
2. Choose shrink/grow animation effect
3. Choose a value

Actual Results:  
Shrinks everytime even if the value is below 100%.

Expected Results:
Shrinking if the value is below 100%.


Reproducible: Always

User Profile Reset: YES

Additional Info:


User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:53.0) Gecko/20100101 Firefox/53.0
Comment 1 Iceflower S 2017-06-10 19:20:25 UTC Comment hidden (obsolete)
Comment 2 Buovjaga 2017-06-10 19:23:27 UTC
Confirmed.

Arch Linux 64-bit, KDE Plasma 5
Version: 5.5.0.0.alpha0+
Build ID: 2802dca10eef67554a81cb2347d5f648fa6fcd63
CPU threads: 8; OS: Linux 4.11; UI render: default; VCL: kde4; 
Locale: fi-FI (fi_FI.UTF-8); Calc: group
Built on June 10th 2017
Comment 3 Regina Henschel 2017-06-10 22:17:01 UTC
I do not know any version, where shrinking has worked.
Comment 4 Yousuf Philips (jay) (retired) 2017-06-11 00:14:39 UTC
I only see Emphasis > Basic > Grow and Shrink in 5.5 master, so not sure how this is inherited from OOo.
Comment 5 Buovjaga 2017-06-11 06:16:03 UTC
(In reply to Yousuf Philips (jay) from comment #4)
> I only see Emphasis > Basic > Grow and Shrink in 5.5 master, so not sure how
> this is inherited from OOo.

Because only the UI is new. According to bug 48918, the effect itself has existed since at least 2006.
Comment 6 Regina Henschel 2017-06-11 15:14:23 UTC
The reason seems to be in the UI. The feature itself works.

Currently LibreOffice writes the attribute smil:by. The values given there are added to the existing value of the animated attribute, here "scale". An unscaled shape has a scale value of 1.

With the UI in LO 3.5.4.2 a setting of "vertical tiny" is written as smil:by="0,0.25". The result is, that the new scale becomes 1.0+0.0=1.0 in x-direction and 1.0+0.25=1.25 in y-direction. The value of the scale-attribute is a factor, so the resulting shape is 125% of the original shape in vertical direction.

The UI in current master, after fix for bug 48918, is worse. It writes smil:by="0,0" for that.

The correct value for getting a shape which is shrunken to 25% of the original size in vertical direction would be smil:by="0,-0.75".

The current UI is bad and therefore I had warned in bug 48918 to simple reactivate it.

The UI needs to give the ability to set grow/shrink with (nearly) arbitrary values and independent for x- and y-direction.

Instead of writing the smil:by attribute it would be possible to use the smil:to attribute as well. That would result in smil:to="1,0.25" for the above example.

I will attach two examples, which show, that LibreOffice can interpret the smil:by attribute with negative values and the smil:to attribute as well. Only the UI is inadequate.
Comment 7 Regina Henschel 2017-06-11 15:16:09 UTC
Created attachment 133956 [details]
Shrink using smil:to attribute

Do not use the animation dialog, but simple play the animation to see the effect.
Comment 8 Regina Henschel 2017-06-11 15:16:43 UTC
Created attachment 133957 [details]
shrink using smil:by attribute

Do not use the animation dialog, but simple play the animation to see the effect.
Comment 9 Buovjaga 2017-06-11 15:21:23 UTC
Ok, let's ping Caolán.
Comment 10 Caolán McNamara 2017-06-11 16:25:13 UTC
I presume I was cc'ed cause of bug 48918 and https://cgit.freedesktop.org/libreoffice/core/commit/?id=7d70516bb1aef8c234788c1cc515d78ac2df7a0c but that's in because of https://gerrit.libreoffice.org/#/c/36524/ and bublies "I'm going to merge this as there is a student who wants to work on the related bug" so presumably bubli can map this to the student who has some thoughts on the issue ?
Comment 11 Katarina Behrens (Inactive) 2017-06-12 08:20:48 UTC
Rohan is working on this: https://gerrit.libreoffice.org/#/c/38231/
Comment 12 Katarina Behrens (Inactive) 2017-11-16 12:13:47 UTC
Unfortunately I don't see the new extended UI for tweaking growth and shrink dimensions to be production-ready any time soon, so I've fixed at least the part where shrinking the object (tiny & small) actually works. 

However, this makes me wonder:

> An unscaled shape has a scale value of 1.
> 
> With the UI in LO 3.5.4.2 a setting of "vertical tiny" is written as
> smil:by="0,0.25". The result is, that the new scale becomes 1.0+0.0=1.0 in
> x-direction and 1.0+0.25=1.25 in y-direction. The value of the
> scale-attribute is a factor, so the resulting shape is 125% of the original
> shape in vertical direction.

> The correct value for getting a shape which is shrunken to 25% of the
> original size in vertical direction would be smil:by="0,-0.75".

How would a case when the shape would grow to 150% of its original size be written? 

Currently it is saved as smil:by="1.5, 1.5" 
but using the above formula, this results in 1 + 1.5 = 2.5 i.e 250% growth, which feels wrong ... would smil:by="0.5, 0.5" be the correct value?
Comment 13 Regina Henschel 2017-11-16 14:52:47 UTC
(In reply to Katarina Behrens (CIB) from comment #12)

> How would a case when the shape would grow to 150% of its original size be
> written? 
> 
> Currently it is saved as smil:by="1.5, 1.5" 
> but using the above formula, this results in 1 + 1.5 = 2.5 i.e 250% growth,
> which feels wrong ... would smil:by="0.5, 0.5" be the correct value?

You can use either smil:by="0.5,0.5" or smil:to="1.5,1.5". You can test it easily. Change the file manually and run the presentation.
Comment 14 Regina Henschel 2017-11-16 15:00:06 UTC
But smil:to is absolute, and smil:by is relative to the previous state. So smil:to="1.5,1.5" is only equal to smil:by="0.5,0.5", if you start with a scale of 1.
Comment 15 Commit Notification 2017-11-17 10:10:31 UTC
Katarina Behrens committed a patch related to this issue.
It has been pushed to "master":

http://cgit.freedesktop.org/libreoffice/core/commit/?id=666dc76e0426927c5f8e70fcfa5bce25171a0722

tdf#108450: The shrink part of grow/shrink animation finally works

It will be available in 6.0.0.

The patch should be included in the daily builds available at
http://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More
information about daily builds can be found at:
http://wiki.documentfoundation.org/Testing_Daily_Builds

Affected users are encouraged to test the fix and report feedback.
Comment 16 Xisco Faulí 2017-12-18 09:09:43 UTC
A polite ping to Katarina Behrens: is this bug fixed? if so, could you
please close it as RESOLVED FIXED ? Thanks
Comment 17 Xisco Faulí 2018-01-18 10:28:05 UTC
(In reply to Xisco Faulí from comment #16)
> A polite ping to Katarina Behrens: is this bug fixed? if so, could you
> please close it as RESOLVED FIXED ? Thanks

@Regina Henschel, could you please check whether this issue is fixed?
Comment 18 Katarina Behrens (Inactive) 2018-01-18 11:31:42 UTC
Partially fixed, for complete fix https://gerrit.libreoffice.org/#/c/38231/ is needed ... but I said so already
Comment 19 Regina Henschel 2018-01-18 11:59:56 UTC
Given animations are correctly played. UI is still missing.
Comment 20 QA Administrators 2019-01-19 03:54:11 UTC Comment hidden (obsolete)
Comment 21 Regina Henschel 2019-01-19 09:44:36 UTC
UI is still missing. The file has different shrink settings for width and height. Such does not exist in the UI.
Comment 22 Xisco Faulí 2019-04-30 10:07:26 UTC
Dear Rohan Kumar,
This bug has been in ASSIGNED status for more than 3 months without any
activity. Resetting it to NEW.
Please assigned it back to yourself if you're still working on this.
Comment 23 Commit Notification 2021-05-19 08:41:56 UTC
Edward Lynch committed a patch related to this issue.
It has been pushed to "master":

https://git.libreoffice.org/core/commit/1da19c31d3b8f8e0eba1ffcffe7b89f90c4171d4

tdf#108450 and tdf#134665 Fix Impress Grow/Shrink Animation Scaling

It will be available in 7.2.0.

The patch should be included in the daily builds available at
https://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More
information about daily builds can be found at:
https://wiki.documentfoundation.org/Testing_Daily_Builds

Affected users are encouraged to test the fix and report feedback.
Comment 24 QA Administrators 2023-05-20 03:17:33 UTC
Dear Iceflower S,

To make sure we're focusing on the bugs that affect our users today, LibreOffice QA is asking bug reporters and confirmers to retest open, confirmed bugs which have not been touched for over a year.

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