Hi,
so I tracked it down to the import of QtQuick.Dialogs. When I import it,
the size of the wasm file increases from iirc 34mb to 40, and my debug
output shows the fusion and imagine style (plus some others). It makes
sense as there are a bunch of native dialogs in there. though i don't
know whether they are usable via wasm. In case somebody is finds this,
do a full rebuild after removing dialogs. Seems like caching is at work
there.
I don't know whether this is a bug or not. These styles don't show in
native compilation on linux. and it's certainly surprising, that adding
a colour dialogue adds 6mb on your wasm file.
should i report it as a bug?
thanks for the answer, it helped understanding the issue :)
cheers, Adam
On 04/02/2024 17:35, Adam wrote:
Hi,
I'm using Qt 6.6.1 and cmake.
I have imports like this:
import QtQuick
import QtQuick.Controls.Material
import QtQuick.Layouts
import QtQuick.Dialogs
at one point i'm also importing QtQuick.Controls.Universal.
i also verified that at no point i'm importing QtQuick.Controls alone.
i'm linking in CMakeLists.txt via:
target_link_libraries(alpineapp PUBLIC nucleus gl_engine Qt::Quick
Qt::QuickControls2 Qt::Charts) // Charts removed on my other
workstation with no change.
this is the CMakeLists.txt i'm using (along with the rest of the
project:
https://github.com/adam-ce/alpine_renderer/blob/main/app/CMakeLists.txt
with automatic builds at
https://adam-ce.github.io/alpine_renderer/wasm_singlethread/alpineapp.html
interestingly, on a desktop build, only commonstyle and macstyle are
imported (no material style, but it's there in the app).
I also just tried the calqlatr example, replacing the only import of
QtQuick.Controls i found with QtQuick.Controls.Material and adding my
debug code for printing styles. The result is import of the imagine,
basic and fusion style, but surprisingly not material.
I'll try to setup a minimal example on tomorrow.
Thanks, Adam
On 02/02/2024 18:29, Mike Trahearn wrote:
Hi Adam,
How are you using the styles in QML?
Are you importing QtQuick.Controls (only) or are you using specific
style imports?
Which version of Qt? CMake assumed?
Assuming the latter and at least Qt 6.2, CMake will only build in the
libraries it absolutely needs. But for this to be the case, it needs
to know what it needs. Using just import QtQuick.Controls relies on
run-time style selection (for which there are different ways to
select, all nicely documented). In this case the compiler cannot know
in advance which to include, so it has to bring in all of them just
in case you run post-build with a different style however it selects it.
For compile-time style selection, you import
QtQuick.Controls.Basic/Fusion/Universal .... being specific. Or.. you
can use your own style and not Qt Quick Controls at all (albeit it is
sometimes hard to not use some of its nice helper types). In this
case the compiler only compiles what it needs and there would be
nothing in CMake that generates a qrc file with all the run-time
style options.
Very obviously this is not your observation so more details on your
Qt Quick Controls usage and how you choose your styles and any
relevant CMake project/module info would be helpful for someone here
to better understand your specific case and more importantly, if
there might be a bug.
Mike
------------------------------------------------------------------------
*From:* Interest <interest-boun...@qt-project.org> on behalf of Adam
<qt_inter...@xibo.at>
*Sent:* Saturday, February 3, 2024 1:19:35 AM
*To:* interest@qt-project.org <interest@qt-project.org>
*Subject:* [Interest] unnecessary files in qrc system in webassembly
Hi,
I'm building a QML app for WebAssembly using CMake. When debugging
something else, I printed all files that are in the qrc system. Doing
that, I saw, that the macos, universal and fusion styles are all
compiled in. There are also a bunch of icons for file dialogues etc. I'm
not using them, and they increase the binary (wasm) size.
Is there any way to remove them?
Thanks, Adam
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