Re: [Flightgear-devel] Canvas text: support for simple markup (bold, italic, under line, strike through, coloring)

[TheFGFSEagle <the...@gm...>]

And the new element can be tested with the following Nasal code, after
checking out the canvas_pangotext branch from
git.code.sf.net/u/thefgfseagle/fgdata:

w = canvas.Window.new([200, 200], "dialog");
c = w.createCanvas();
g = c.createGroup();
t = g.createChild("pangotext");
t.setMarkup("<b>bold</b>");
w.show();

Am Mo., 27. März 2023 um 12:01 Uhr schrieb TheFGFSEagle <
the...@gm...>:

> I'm making progress now - I've successfully subclassed Pango::Renderer,
> and I'm also successfully showing an osg::Texture2D as element on the
> canvas, but when I try to copy an osgText::Glyph onto that texture, instead
> of a glyph I get a noise texture instead … the other issue I'm having is
> some ponter problem (a smart pointer of one CanvasPangoText instance only
> getting deleted upon the creation of the next instance, which leads to it
> wanting to delete something that was already deleted !?).
> On both problems I'm somewhat stuck, so it would be great if @James Turner
> <ja...@fl...>  or @Hooray could take a look - the latest code is
> available at git.code.sf.net/u/thefgfseagle/simgear.git / branch
> canvas_pangotext, in
> simgear/canvas/elements/{CanvasPangoText,PangoRendererCanvas}.cxx
>
> Am Di., 21. März 2023 um 03:04 Uhr schrieb TheFGFSEagle <
> the...@gm...>:
>
>> Solved - one needs to recreate the target PkgConfig::PANGOMM by copying
>> the pkg_check_modules call to SimGearConfig.cmake ! :)
>>
>> Am Mo., 20. März 2023 um 21:14 Uhr schrieb TheFGFSEagle <
>> the...@gm...>:
>>
>>> I need some help with CMake, I think. I've successfully added the
>>> necessary setup to be able to build SimGear with PangoMM, but at the point
>>> of using the resulting SimGear build with FlightGear I've got some problems.
>>>
>>> This is in the top-level $SG_SOURCE/CMakeLists.txt:
>>>
>>> find_package(PkgConfig)
>>> pkg_check_modules(PANGOMM REQUIRED IMPORTED_TARGET pangomm-1.4)
>>>
>>> Then in the $SG_SOURCE/simgear/CMakeLists.txt:
>>>
>>>     target_include_directories(SimGearScene PRIVATE PkgConfig::PANGOMM)
>>>     target_link_libraries(SimGearScene PRIVATE PkgConfig::PANGOMM)
>>>
>>> In the files for the new CanvasPangoText (which will have the markup and
>>> selection support) I can now
>>>
>>> #include <pangomm/renderer.h>
>>>
>>> without problems, SimGear compiles and installs without problems. Then I
>>> continued with FlightGear, and already the cmake build files generation
>>> step failed:
>>>
>>> /home/user/fgsource/simgear/build$ cmake ..
>>> CMAKE Build type: RelWithDebInfo
>>> -- System is: Linux
>>> -- Linux distro is: Ubuntu
>>> -- Web browser launcher command is: xdg-open
>>> -- Using explicit data directory for base package:
>>> /usr/local/lib/FlightGear
>>> -- libudev stable: 1
>>> -- Found UDev: /usr/lib/x86_64-linux-gnu/libudev.so
>>> --    include: /usr/include
>>> -- event-based input enabled. Using /usr/lib/x86_64-linux-gnu/libudev.so
>>> -- Enabling HID-API input
>>> -- SWIFT support enabled
>>> -- VR support disabled, OpenXR not found
>>> -- Couldn't find translations data, will not include translated string
>>> in the executable
>>> -- Qt GUI enabled, found Qt at: /usr/lib/x86_64-linux-gnu/qt5
>>> -- QtGui private headers not available.
>>> -- Min Simgear version is 2020.4.0
>>> -- Data Distribution Service support: DISBLED
>>> -- SSE/SSE2 support: ENABLED
>>> -- libudev stable: 1
>>> -- Found UDev: /usr/lib/x86_64-linux-gnu/libudev.so
>>> --    include: /usr/include
>>> -- Enabling legacy joystick code (from PLIB)
>>> -- CppUnit: Building the FlightGear supplied CppUnit library
>>> -- Configuring done
>>> CMake Error at utils/fgelev/CMakeLists.txt:1 (add_executable):
>>>   Target "fgelev" links to target "PkgConfig::PANGOMM" but the target
>>> was not
>>>   found.  Perhaps a find_package() call is missing for an IMPORTED
>>> target, or
>>>   an ALIAS target is missing?
>>>
>>>
>>> CMake Error at utils/fgviewer/CMakeLists.txt:45 (add_executable):
>>>   Target "fgviewer" links to target "PkgConfig::PANGOMM" but the target
>>> was
>>>   not found.  Perhaps a find_package() call is missing for an IMPORTED
>>>   target, or an ALIAS target is missing?
>>>
>>>
>>> CMake Error at src/Sound/CMakeLists.txt:32 (add_library):
>>>   Target "fgvoicesynth" links to target "PkgConfig::PANGOMM" but the
>>> target
>>>   was not found.  Perhaps a find_package() call is missing for an
>>> IMPORTED
>>>   target, or an ALIAS target is missing?
>>>
>>>
>>> CMake Error at src/Main/CMakeLists.txt:81 (add_executable):
>>>   Target "fgfs" links to target "PkgConfig::PANGOMM" but the target was
>>> not
>>>   found.  Perhaps a find_package() call is missing for an IMPORTED
>>> target, or
>>>   an ALIAS target is missing?
>>>
>>>
>>> CMake Error at src/Main/CMakeLists.txt:111 (add_executable):
>>>   Target "nasal" links to target "PkgConfig::PANGOMM" but the target was
>>> not
>>>   found.  Perhaps a find_package() call is missing for an IMPORTED
>>> target, or
>>>   an ALIAS target is missing?
>>>
>>>
>>> CMake Error at src/Main/CMakeLists.txt:119 (add_executable):
>>>   Target "metar" links to target "PkgConfig::PANGOMM" but the target was
>>> not
>>>   found.  Perhaps a find_package() call is missing for an IMPORTED
>>> target, or
>>>   an ALIAS target is missing?
>>>
>>>
>>> CMake Error at test_suite/CMakeLists.txt:124 (add_executable):
>>>   Target "fgfs_test_suite" links to target "PkgConfig::PANGOMM" but the
>>>   target was not found.  Perhaps a find_package() call is missing for an
>>>   IMPORTED target, or an ALIAS target is missing?
>>>
>>>
>>> -- Generating done
>>> CMake Generate step failed.  Build files cannot be regenerated correctly.
>>> gmake: *** [Makefile:15062: cmake_check_build_system] Error 1
>>>
>>> I need to do something like this:
>>> https://cmake.org/cmake/help/latest/guide/tutorial/Adding%20Export%20Configuration.html
>>> but I don't quite know what to insert / change where - maybe someone could
>>> provide some pointers on this ?
>>>
>>> Am Sa., 18. März 2023 um 17:59 Uhr schrieb TheFGFSEagle <
>>> the...@gm...>:
>>>
>>>> Thanks Florent, but I hadn't committed at all yet, and I'm using Gedit !
>>>>
>>>> Am Sa., 18. März 2023 um 17:52 Uhr schrieb Florent Rougon <
>>>> f.r...@fr...>:
>>>>
>>>>> TheFGFSEagle <the...@gm...> wrote:
>>>>>
>>>>> > Well, the choice has been made - it's going to be Pango or nothing,
>>>>> because
>>>>> > I accidentally deleted my uncommitted markup work ! :wail:
>>>>>
>>>>> If you use Emacs, maybe you have a backup file somewhere—but I believe
>>>>> you would know. If you committed the work at some point and simply
>>>>> rewound the branch or rebased it so that the commits are not visible
>>>>> anymore, they most likely still exist internally and can be found with
>>>>> 'git reflog'. If you didn't commit at all... well, sorry.
>>>>>
>>>>> When I have to stop in the middle of a long-running change, I often do
>>>>> a
>>>>> 'git ci -am tmp' where 'git ci' is an alias for 'git commit'. Then I
>>>>> either:
>>>>>  - amend the commit, or;
>>>>>  - add new ones on top of it, and in the end squash them using
>>>>>    'git rebase -i ...'.
>>>>>
>>>>> Regards
>>>>>
>>>>> --
>>>>> Florent
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> Flightgear-devel mailing list
>>>>> Fli...@li...
>>>>> https://lists.sourceforge.net/lists/listinfo/flightgear-devel
>>>>>
>>>>