https://bugs.documentfoundation.org/show_bug.cgi?id=159562

            Bug ID: 159562
           Summary: Image properties are inconsistently selectable
           Product: LibreOffice
           Version: 7.6.4.1 release
          Hardware: x86-64 (AMD64)
                OS: Windows (All)
            Status: UNCONFIRMED
          Severity: minor
          Priority: medium
         Component: Writer
          Assignee: [email protected]
          Reporter: [email protected]

Description:
Opening the image properties dialog for an inserted external image (key F4) is
often misleading with settings.
a. When selecting the main position and dimensioning tab, values entered can
give unexpected results: entering a percentage (without a "relative" flag set)
instead of a dimension produces a strange effect. As an example, with a 3.86 cm
wide image, entering "50%" results in a 21.0 cm wide image
b. The results in the cropping tab are completely astray from what the "keep
proportions"/"keep dimensions" selection suggests: Even with "keep proportions"
flagged, the width/height percentages/dimensions can be set to any
non-proportional value. Even worse if you "substitute" an image (from the
contextual menu with a right-click on the image), as it retains the old
percentages.
c. Different proportions on imported vectorial images, containing an unknown
font, may even result in a catastrophic final effect on screen rendered image
(text doesn't scale proportionally in the two directions, with unexpected
overflows)


Steps to Reproduce:
1. I created a simple diagram with yED and exported it to SVG; this tests the
unknown fonts, as it forcibly uses "Dialog", which isn't present on my system
2. Import the SVG image
3. Select the image and open it with F4 image settings
4. Fiddle with settings as described above

Actual Results:
An unexpected percentage entered produces a weird change in dimensions.
There's no automatic proportional resize in percentage.
Unproportional resizing fails to render correctly fonts in vectorial images.


Expected Results:
If a percentage has no clear meaning in a field value, then it should be
unacceptable as a value or have a clearer effect (e.g. affecting the dimension
itself).
Proportional resize could result in a proportional resize, that would make
sense.
Font resizing in vectorial images should follow the proportion of the rest of
the image.


Reproducible: Always


User Profile Reset: No

Additional Info:
Version: 7.6.4.1 (X86_64) / LibreOffice Community
Build ID: e19e193f88cd6c0525a17fb7a176ed8e6a3e2aa1
CPU threads: 12; OS: Windows 10.0 Build 22631; UI render: default; VCL: win
Locale: it-IT (it_IT); UI: it-IT
Calc: threaded

Note also that this behavior is the same with version 24.2.0.3

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