Re: [Texmacs-dev] Qt5 version

[Jeroen Wouters]

Hi Joris,

As Qt5 is no longer receiving bug fixes, might it make sense to
immediately target Qt6? Before summer Max created a branch using Qt6.
I've experimented a bit with it and haven't found major problems so
far.
https://github.com/texmacs/texmacs/tree/qt6

Best wishes,
Jeroen

On Thu, 2021-11-11 at 17:08 +0100, TeXmacs wrote:
> Dear all,
> 
> I resumed work on the Qt5 version (the main remaining problems being
> for MacOS).
> I listed several problems that I ran into.  Any help would be
> appreciated.
> 
> Best wishes, --Joris
> 
> 
> -----------------------------------------------------------------------
> ----
> 
> Color problems 
> ==============
> 
> The most annoying problem with the Qt5 version under MacOS is that the
> colors
> of various widget elements are incorrect. This problem is most
> important when
> using the “Dark mode”.
> 
> It is fairly difficult to understand for me how these things work
> precisely in
> Qt and in the implementation by Max and Miguel, so help here would be
> welcome.
> 
> It would probably be best to abstract things a bit and to introduce a
> routine
> 
> QPalette tm_palette ();
> 
> for obtaining the TeXmacs color palette and consistently use this for
> all
> widgets. In order to make things customizable, we might also introduce
> an
> enumeration
> 
> enum gui_color { GUI_DARK, GUI_LIGHT, …};
> 
> with the TeXmacs counterparts for QPalette::Dark, QPalette::Light, etc.
> We
> also need the corresponding converters
> 
> color as_color (gui_color col);
> QColor as_qcolor (gui_color col);
> 
> and maybe an initialization routine
> 
> init_gui_colors ();
> 
> that could read some of the values from Qt defaults (which could be
> different
> in light and dark mode) or from the user preferences.
> 
> Here follow some specific problems for the current implementation
> (MacOS
> 10.14.6):
> 
> •  (dark mode) background too dark for wait widget.
> 
> •  (dark mode) font browser: selected backgrounds are too dark (by the
> way,
> they are grey instead of blue, but become blue when one clicks on them,
> before
> returning to grey . . . ) and so are the borders of the TeXmacs-output
> widget.
> 
> •  (dark mode) Insert→Session→Other ↝ very dark background for widget.
> 
> •  (dark mode) color menus on toolbars ↝ very dark background for
> widget.
> 
> •  (dark mode) Help→Search→Source code ↝ very dark background for
> widget.
> 
> •  When selecting “non native menubar” in Preferences→Other (SVN
> version of
> TeXmacs), the color of the menu bar is ugly (too light).
> 
> •  (dark mode) When pressing an icon on the toolbars, the pressed color
> is too
> dark.
> 
> 
> Other problems
> ==============
> 
> •  Document→Colors→Background: the colored entries do not work; they do
> work
> in the pulldown menus for colors via the toolbars.
> 
> •  In the top-level menu for an empty document, click on Tools→Macros
> and note
> that Create context macro and Create table macro are greyed out. Now
> don't
> release the mouse button, click on Tools→Keyboard, and then go back to
> Tools→Macros; at this point, Create context macro and Create table
> macro are
> no longer greyed out.
> 
> •  Open a pulldown menu on one of the toolbars. Then click elsewhere on
> the
> toolbars; the pulldown menu icon remains highlighted until you hover
> the mouse
> over it.
> 
> •  The svg extension is not added to the list of supported formats when
> browsing image files. But SVG images do work (when changing the filter
> to
> *.*).
> 
> •  I could not manage to make the resize the toolbars in an appropriate
> way.
> By default, the icons and the fonts are a bit too small, but the retina
> versions are way too large. Note that the SVG versions of the icons
> seem to
> work in Qt5, but I still did not manage to get them at arbitrary sizes.
> 
> •  Denis (Raux) and Jean-Marc (Notin) managed to compile TeXmacs for
> ARM (an
> Apple M1 based Mac Mini), using Qt 5.12. The native Mac menu again
> seems to
> trigger a lot of segfaults, especially when opening documentation using
> the
> Help menu. This problem disappears when using the non-native menubars
> (Preferences→Other, SVN version of TeXmacs).
> 
> <TeXmacs|2.1>
> 
> <style|<tuple|tmdoc|pagella-font>>
> 
> <\body>
>   <subsection*|Color problems>
> 
>   The most annoying problem with the <name|Qt5> version under
> <name|MacOS> is
>   that the colors of various widget elements are incorrect. This
> problem is
>   most important when using the \PDark mode\Q.
> 
>   It is fairly difficult to understand for me how these things work
> precisely
>   in <name|Qt> and in the implementation by Max and Miguel, so help
> here
>   would be welcome.
> 
>   It would probably be best to abstract things a bit and to introduce a
>   routine
> 
>   <\cpp-code>
>     QPalette tm_palette ();
>   </cpp-code>
> 
>   for obtaining the <TeXmacs> color palette and consistently use this
> for all
>   widgets. In order to make things customizable, we might also
> introduce an
>   enumeration
> 
>   <\cpp-code>
>     enum gui_color { GUI_DARK, GUI_LIGHT, ...};
>   </cpp-code>
> 
>   with the <TeXmacs> counterparts for <cpp|QPalette::Dark>,
>   <cpp|QPalette::Light>, etc. We also need the corresponding converters
> 
>   <\cpp-code>
>     color as_color (gui_color col);
> 
>     QColor as_qcolor (gui_color col);
>   </cpp-code>
> 
>   and maybe an initialization routine
> 
>   <\cpp-code>
>     init_gui_colors ();
>   </cpp-code>
> 
>   that could read some of the values from <name|Qt> defaults (which
> could be
>   different in light and dark mode) or from the user preferences.
> 
>   Here follow some specific problems for the current implementation
>   (<name|MacOS> 10.14.6):
> 
>   <\itemize>
>     <item>(dark mode) background too dark for wait widget.
> 
>     <item>(dark mode) font browser: selected backgrounds are too dark
> (by the
>     way, they are grey instead of blue, but become blue when one clicks
> on
>     them, before returning to grey<text-dots>) and so are the borders
> of the
>     <TeXmacs>-output widget.
> 
>     <item>(dark mode) <menu|Insert|Session|Other>
> <math|\<rightsquigarrow\>>
>     very dark background for widget.
> 
>     <item>(dark mode) color menus on toolbars
> <math|\<rightsquigarrow\>> very
>     dark background for widget.
> 
>     <item>(dark mode) <menu|Help|Search|Source code>
>     <math|\<rightsquigarrow\>> very dark background for widget.
> 
>     <item>When selecting \Pnon native menubar\Q in
> <menu|Preferences|Other>
>     (SVN version of <TeXmacs>), the color of the menu bar is ugly (too
>     light).
> 
>     <item>(dark mode) When pressing an icon on the toolbars, the
> pressed
>     color is too dark.
>   </itemize>
> 
>   <subsection*|Other problems>
> 
>   <\itemize>
>     <item><menu|Document|Colors|Background>: the colored entries do not
> work;
>     they do work in the pulldown menus for colors <em|via> the
> toolbars.
> 
>     <item>In the top-level menu for an empty document, click on
>     <menu|Tools|Macros> and note that <menu|Create context macro> and
>     <menu|Create table macro> are greyed out. Now don't release the
> mouse
>     button, click on <menu|Tools|Keyboard>, and then go back to
>     <menu|Tools|Macros>; at this point, <menu|Create context macro> and
>     <menu|Create table macro> are no longer greyed out.
> 
>     <item>Open a pulldown menu on one of the toolbars. Then click
> elsewhere
>     on the toolbars; the pulldown menu icon remains highlighted until
> you
>     hover the mouse over it.
> 
>     <item>The <verbatim|svg> extension is not added to the list of
> supported
>     formats when browsing image files. But <name|SVG> images do work
> (when
>     changing the filter to <verbatim|*.*>).
> 
>     <item>I could not manage to make the resize the toolbars in an
>     appropriate way. By default, the icons and the fonts are a bit too
> small,
>     but the retina versions are way too large. Note that the SVG
> versions of
>     the icons seem to work in <name|Qt5>, but I still did not manage to
> get
>     them at arbitrary sizes.
> 
>     <item>Denis (Raux) and Jean-Marc (Notin) managed to compile
> <TeXmacs> for
>     ARM (an <name|Apple><nbsp>M1 based <name|Mac> <name|Mini>), using
>     <name|Qt> 5.12. The native <name|Mac> menu again seems to trigger a
> lot
>     of segfaults, especially when opening documentation using the
> <menu|Help>
>     menu. This problem disappears when using the non-native menubars
>     (<menu|Preferences|Other>, SVN version of<nbsp><TeXmacs>).
>   </itemize>
> </body>
> 
> <\initial>
>   <\collection>
>     <associate|math-font|math-pagella>
>     <associate|page-medium|papyrus>
>   </collection>
> </initial>
> 
> 
> ----- End forwarded message -----
> 
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