Hi Mitch
Thanks for the reply. That is effectively what I have resorted to doing:
setting the attached properties for the root window item:
Material.theme: Material.Dark
Material.primary: ...
Material.accent: ...
Material.foreground: ...
Material.background: ...
One problem with this approach is the 'Variant' property can't be set
(Dense/Normal). Looking in the source code, that can only be set from
the environment variable, which is done in
QQuickMaterialStyle::initGlobals()
Just to complete the picture, I have tried with the import in qmldir:
import QtQuick.Controls.Material auto
and setting the fallback style in C++:
QQuickStyle::setFallbackStyle("Material");
I would imagine 'initiGlobals' should be called, even when it is the
fallback style. But I don't know the infrastructure for the style
plugins and the theme initialisation, so not sure how that should be
accomplished.
Kind regards
Matthew
On 2023/09/20 03:44, EXT Mitch Curtis wrote:
Hi Matthew,
-----Original Message-----
From: Interest <interest-boun...@qt-project.org> On Behalf Of Matthew
Fincham via Interest
Sent: Tuesday, September 19, 2023 1:13 PM
To: interest@qt-project.org
Subject: Re: [Interest] Creating a custom QML style with Material as a fallback,
but with a dark theme
Hi
Following up on my own post.
QQuickMaterialStyle logs a warning if an invalid theme is used (not 'Light' or
'Dark'). This is in the function that initialises the style's global variables.
(in
qquickmaterialstyle.cpp)
When the 'Material' style is used as the fallback style, this log is not seen.
This
initialisation function is called from the 'Material' plugin (
qtquickcontrols2materialstyleplugin.cpp), which seems to indicate the plugin's
initialisation is not run when it is the fallback theme.
Does this make sense, and is there a way to force the initialisation?
I'm looking into it, but as a workaround, assuming your style imports the
Material style as a fallback in its qmldir (or IMPORTS in qt_add_qml_module):
import QtQuick.Controls.Material auto
you can then use the attached API to set the theme:
Material.theme: Material.Dark
Thanks again.
Matthew Fincham
On 2023/09/18 12:52, Matthew Fincham via Interest wrote:
Hi
I am attempting to create a custom QML style using this documentation:
https://doc/.
qt.io%2Fqt-6%2Fqtquickcontrols-customize.html%23definition-of-a-style&
data=05%7C01%7Cmitch.curtis%40qt.io%7C4e7b0a9253b649740eed08dbb
8cf6fb0
%7C20d0b167794d448a9d01aaeccc1124ac%7C0%7C0%7C638306973314
152407%7CUnk
nown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6I
k1haWw
iLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=V2b3M0MBvsarYVwtDQd
aF3kwWtc2xurp
AuA%2F10IABak%3D&reserved=0
I won't provide sample code because it is close to line-for-line. The
custom style works - there is a custom button and the other controls
use the Material style. However, I can't get the Material style to run
with the Dark theme.
The theme is set with an environment variable:
QT_QUICK_CONTROLS_MATERIAL_THEME=Dark
The style is set in C++:
QQuickStyle::setStyle("MyStyle");
If the style is "Material" this works as expected. With 'MyStyle',
that falls back to Material, a Light theme is used. Is there any was
to force the fallback style to use the Dark theme?
Many thanks
Matthew Fincham
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