[Libreoffice-bugs] [Bug 98316] FORMATTING Dotted lines should really be dots and not short dashes

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=98316

--- Comment #7 from Regina Henschel  ---
Created attachment 140801
  --> https://bugs.documentfoundation.org/attachment.cgi?id=140801=edit
paragraph with dotted border

The problem does not only exists for tables, but for other borders too.
Attached is a file, where the paragraph "2 paragraph dotted" should have a
'dotted' border. It is rendered in something more like a hatching than 'dots'.

The underlying specification of CSS2 has only the text "The border is a series
of dots." without saying what a "dot" is. The upcoming specification of CSS3 is
more accurate. It says "A series of round dots."
[https://www.w3.org/TR/css-backgrounds-3/#the-border-style]

Open the attached file and export it to EPUB and open the result e.g. in
Microsoft Edge. You will see little circles.

Because all browsers and EPUB show round dots, I think it is time to make true
round dots in LibreOffice too. The current way is at least for wide borders far
away from "dot".

Tested in version Version: 6.1.0.0.alpha0+ (x64)
Build ID: 4523a21c6bcf8d57ce90cf074e5b088b6e829e68
CPU threads: 8; OS: Windows 10.0; UI render: default; 
Locale: de-DE (de_DE); Calc: CL

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[Libreoffice-bugs] [Bug 98316] FORMATTING Dotted lines should really be dots and not short dashes

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=98316

Regina Henschel  changed:

   What|Removed |Added

 CC||rb.hensc...@t-online.de

--- Comment #6 from Regina Henschel  ---
For lines you can define a dash with 0,01cm length and use cap style "Round".
But for table borders is no line style available.

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[Libreoffice-bugs] [Bug 98316] FORMATTING Dotted lines should really be dots and not short dashes

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=98316

Buovjaga  changed:

   What|Removed |Added

 Status|UNCONFIRMED |NEW
Summary|FORMATTING - No dotted  |FORMATTING Dotted lines
   |lines in tables available   |should really be dots and
   ||not short dashes
 Ever confirmed|0   |1

--- Comment #5 from Buovjaga  ---
Setting to NEW. It would appear to be a somewhat simple change to render square
dots, but more complicated if actual round dots were desired.

Comments from Armin Le Grand on IRC:

There are different table implementations in all apps.
The ones in Draw/Impress get rendered using primitives, the others probably in
VCL.
For VCL: The line defs there allow dashed/dotted lines, but also dots have a
length. Thus rendering could therorethically be changed to paint a 'real' dot
when width == height.
The primitives involved have a line style definition, also containing dot and
dash values (lineWidth, dash/dot/space length).
If rendered using direct system commands (not used currently AFAIK) it may be
translated to real dots in setting up the system-specific output.
When decomposing currently basegfx is used to create squares, so could also be
changed there.
So, quite some changes to paint 'real' dots everywhere, but all possible.
I think the reason this was never done is that real dots are much more
expensive when handling self - a circle as Polygon with beziers, compared to a
rectangle.

OpenGl would not help - it also can not directly draw dashed/dotted fat lines
(also needs LineCap, LineStartend, not only DashDot support)

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