[Miran Višner]

Hi,

I am trying to create costum singleton QML file, for some configuration of my app in Felgo 4.0 and no mattter what I try to do I get value of my costum property: “undefined” but I set that property value to 15 in my singleton QML file.

 

in my singleton QML file I typed “pragma Singleton” before anything else and I typed:

set_source_files_properties(MySingleton.qml PROPERTIES
QT_QML_SINGLETON_TYPE ON
)

into my CMakeLists.txt after command that lists all qml/js files. How to make it work?

[AlexFelgo Team]

Hi Miran,

could create a small example an post your full code here, to make it easier to see what may be wrong there. You can use the “Code” button in the formatting options to post formatted code here in the forum.

Best,
Alex

[Miran Višner]

 

//MySingelton.qml
//in this singleton class I wish to have costum global properties for user interface as (global radious for components, colors for interface (light, dark theme), ...; like Felgo's Theme element, but for my costum controls)
pragma Singleton
import QtQuick
import Felgo
 
Item {

    id: item
    property int testSize: 15
    property bool darkTheme: false

}

in CmakeList.txt:

cmake_minimum_required(VERSION 3.24)

project(FarmReportSlo VERSION 0.1 LANGUAGES CXX)

set(CMAKE_AUTOMOC ON)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

find_package(Felgo REQUIRED)
find_package(Qt6 6.4 COMPONENTS Quick REQUIRED)

# Project identifier and version
# More information: https://felgo.com/doc/felgo-publishing/#project-configuration
set(PRODUCT_IDENTIFIER "eu.miranvisner.FarmReportSlo")
set(PRODUCT_VERSION_NAME "1.0.0")
set(PRODUCT_VERSION_CODE 1)

# Set either "test" or "publish" stage:
set(PRODUCT_STAGE "test")

# Optionally set a license key that is used instead of the license key from
# main.qml file (App::licenseKey for your app or GameWindow::licenseKey for your game)
# Only used for local builds and Felgo Cloud Builds (https://felgo.com/cloud-builds)
# Not used if using Felgo Live
set(PRODUCT_LICENSE_KEY "")

set(FELGO_PLUGINS
)

# Find all QML/JS files for the QML compiler:
file(GLOB_RECURSE QmlFiles RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} qml/*.qml qml/*.js)

set_source_files_properties(qml/MySingleton.qml PROPERTIES
    QT_QML_SINGLETON_TYPE TRUE
)

# Find all non-QML/JS files in the qml and assets folder to add as resources:
file(GLOB_RECURSE AssetsFiles RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} assets/* qml/*)
list(REMOVE_ITEM AssetsFiles ${QmlFiles})



qt_add_executable(appFarmReportSlo
    main.cpp
    ${QmlFiles}
    ${AssetsFiles}
)



felgo_configure_executable(appFarmReportSlo)

# Deploy resources to build folder/package directly
# comment for publishing
deploy_resources("${QmlFiles};${AssetsFiles}")

# Add QML files and resources to QML module to included them via QRC automatically:
qt_add_qml_module(appFarmReportSlo
    URI FarmReportSlo
    VERSION 1.0
# uncomment for publishing:
#    QML_FILES ${QmlFiles}
#    RESOURCES ${AssetsFiles}
    NO_RESOURCE_TARGET_PATH
)


target_compile_definitions(appFarmReportSlo
    PRIVATE $<$<OR:$<CONFIG:Debug>,$<CONFIG:RelWithDebInfo>>:QT_QML_DEBUG>)

target_link_libraries(appFarmReportSlo PRIVATE Felgo)

 

[AlexFelgo Team]

Hi again,

the issue is that the qmldir file that is generated, and where the singleton is added automatically with the set_source_files_properties, does not seem to be generated or used correctly at runtime then. We are closer investigating this issue, for now I would suggest the following workaround:

* Remove the set_source_files_properties entry in CMake, as it does not have the desired effect at the moment
* Instead create an own qmldir file in the qml folder, and add your singleton there, with e.g.:

singleton MySingleton 1.0 MySingleton.qml

I hope this resolves your issue for now. Thanks for reporting your issue and the example.

Best,
Alex

[drsnowlabs]

Hi all.

 

Just following up on this, since I got into the same situation. I’m using qt 6.6.1 and this is still an issue. The workaround of adding the “old-style” qmldir file (and adding it under QML_FILES in qt_add_qml_module()) does the trick.