Qt6 Creator 无法用 Fcitx5 输入中文

用 Qt 官方的 Online Installer 安装的,没有做特别的设置。
我搜索了网上的方法,试验后仍没有解决。下面是试验的步骤:

# 1. 准备 Fcitx5 Qt6 插件的源码及编译目录
Git clone https://Github.com/fcitx/fcitx5-qt.Git ~/fcitx5-qt 
cd ~/fcitx5-qt 
Git checkout 5.1.3
mkdir build
# 2. 准备 编译环境
export LD_LIBRARY_PATH=/opt/Qt/Tools/QtCreator/lib/Qt/lib
export PATH=/opt/Qt/Tools/QtCreator/lib/Qt/bin:/opt/Qt/6.6.1/gcc_64/bin:/opt/Qt/Tools/CMake/bin:$PATH

# 3. 编译插件
cmake -DENABLE_QT5=Off -DENABLE_QT4=Off -DENABLE_QT6=On -DBUILD_ONLY_PLUGIN=ON \
-DCMAKE_BUILD_TYPE=Release \
-DCMAKE_POSITION_INDEPENDENT_CODE=ON \
-B build/
cd build
make

# 4. 复制 插件库 到 QtCreator
sudo cp qt6/platforminputcontext/libfcitx5platforminputcontextplugin.so \
/opt/Qt/6.6.1/gcc_64/plugins/platforminputcontexts/libfcitx5platforminputcontextplugin.so
sudo cp qt6/platforminputcontext/libfcitx5platforminputcontextplugin.so \
/opt/Qt/Tools/QtCreator/lib/Qt/plugins/platforminputcontexts/libfcitx5platforminputcontextplugin.so

按照上面的方法试验后仍然不能输入中文,若打开 QtCreator->Terminal ,执行 fcitx5-qt6-immodule-probing ,你会看到:

qt.qpa.theme.dbus: Session DBus not running.
qt.qpa.theme.dbus: Application will not react to setting changes.
 Check your DBus installation.
QT_QPA_PLATFORM=xcb
QT_IM_MODULE=fcitx
IM_MODULE_CLASSNAME=fcitx::QFcitxPlatformInputContex

请问哪位有没有遇到同样的问题,能共享一下解决方案否? :joy:

env | grep DBUS

Konsole 输出:

env | grep DBUS
KONSOLE_DBUS_SERVICE=:1.158
KONSOLE_DBUS_SESSION=/Sessions/4
DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus
KONSOLE_DBUS_WINDOW=/Windows/1

Qt Creator → Terminal 输出:

env | grep DBUS
DBUS_SESSION_BUS_ADDRESS=/run/user/1000/bus

若用命令 QT_DEBUG_PLUGINS=1 /opt/Qt/Tools/QtCreator/bin/qtcreator.sh -dograb 运行 QtCreator,会发现类似下面的信息:

qt.core.plugin.factoryloader: Got keys from plugin meta data QList("ibus")
qt.core.plugin.factoryloader: looking at "/opt/Qt/Tools/QtCreator/lib/Qt/plugins/platforminputcontexts/libfcitx5platforminputcontextplugin.so"
qt.core.plugin.loader: Found metadata in lib /opt/Qt/Tools/QtCreator/lib/Qt/plugins/platforminputcontexts/libfcitx5platforminputcontextplugin.so, metadata=
{
    "IID": "org.qt-project.Qt.QPlatformInputContextFactoryInterface.5.1",
    "MetaData": {
        "Keys": [
            "fcitx",
            "fcitx5"
        ]
    },
    "archlevel": 1,
    "className": "QFcitx5PlatformInputContextPlugin",
    "debug": false,
    "version": 394752
}


qt.core.plugin.factoryloader: Got keys from plugin meta data QList("fcitx", "fcitx5")
qt.core.plugin.factoryloader: checking directory path "/opt/Qt/Tools/QtCreator/bin/platforminputcontexts" ...
qt.core.library: "/opt/Qt/Tools/QtCreator/lib/Qt/plugins/platforminputcontexts/libfcitx5platforminputcontextplugin.so" cannot load: Cannot load library /opt/Qt/Tools/QtCreator/lib/Qt/plugins/platforminputcontexts/libfcitx5platforminputcontextplugin.so: (/opt/Qt/Tools/QtCreator/lib/Qt/plugins/platforminputcontexts/libfcitx5platforminputcontextplugin.so: undefined symbol: _ZN13QRasterWindow11resizeEventEP12QResizeEvent, version Qt_6)
qt.core.plugin.loader: QLibraryPrivate::loadPlugin failed on "/opt/Qt/Tools/QtCreator/lib/Qt/plugins/platforminputcontexts/libfcitx5platforminputcontextplugin.so" : "Cannot load library /opt/Qt/Tools/QtCreator/lib/Qt/plugins/platforminputcontexts/libfcitx5platforminputcontextplugin.so: (/opt/Qt/Tools/QtCreator/lib/Qt/plugins/platforminputcontexts/libfcitx5platforminputcontextplugin.so: undefined symbol: _ZN13QRasterWindow11resizeEventEP12QResizeEvent, version Qt_6)"

这个错了。前边的 unix:path= 没了。

这个没用 :joy:

我在上面贴出的信息中有下面这个重点:

所以,我冒出一个大胆的猜测:Qt Online Installer 安装的 QtCreator 所使用的 Qt 运行时(/opt/Qt/Tools/QtCreator/lib/Qt)是商用版(与开源版有区别)的。
然后我便尝试用开源版替代:

mv /opt/Qt/Tools/QtCreator/lib/Qt /opt/Qt/Tools/QtCreator/lib/Qt.online
ln -s /opt/Qt/6.6.1/gcc_64 /opt/Qt/Tools/QtCreator/lib/Qt

哈哈,竟然可以正常输入中文了! :stuck_out_tongue_winking_eye:

但是这个方案有个问题:在进行 Qt/QtCreator 版本更新时可能会需要重新操作一遍(因为更新后/opt/Qt/6.6.1/gcc_64 会被删掉,然后创建类似/opt/Qt/6.6.2 的目录),而且官方 QtCreator 的商业版 Qt 运行时可能会错误覆盖/opt/Qt/6.6.1/gcc_64,所以要在运行/opt/Qt/MaintenanceTool 真正更新 Qt 版本之前,把软连接恢复:

rm /opt/Qt/Tools/QtCreator/lib/Qt
mv /opt/Qt/Tools/QtCreator/lib/Qt.online /opt/Qt/Tools/QtCreator/lib/Qt

期待更好的解决办法,欢迎大家继续留言讨论 :joy:

尝试过用系统库替代:

rm /opt/Qt/Tools/QtCreator/lib/Qt
mkdir /opt/Qt/Tools/QtCreator/lib/Qt
ln -s  /usr/bin  /opt/Qt/Tools/QtCreator/lib/Qt/bin
ln -s  /usr/lib64  /opt/Qt/Tools/QtCreator/lib/Qt/lib
ln -s /usr/lib64/qt6/plugins /opt/Qt/Tools/QtCreator/lib/Qt/plugins
ln -s  /usr/lib64/qt6/qml /opt/Qt/Tools/QtCreator/lib/Qt/qml

但是会输出这样的信息:

/opt/Qt/Tools/QtCreator/bin/qtcreator: /opt/Qt/Tools/QtCreator/bin/../lib/Qt/lib/libQt6Core.so.6: version `Qt_6_PRIVATE_API' not found (required by /opt/Qt/Tools/QtCreator/bin/../lib/qtcreator/libExtensionSystem.so.12)
/opt/Qt/Tools/QtCreator/bin/qtcreator: /opt/Qt/Tools/QtCreator/bin/../lib/Qt/lib/libQt6Core.so.6: version `Qt_6_PRIVATE_API' not found (required by /opt/Qt/Tools/QtCreator/bin/../lib/qtcreator/libUtils.so.12)
/opt/Qt/Tools/QtCreator/bin/qtcreator: /opt/Qt/Tools/QtCreator/bin/../lib/Qt/lib/libQt6Core.so.6: version `Qt_6_PRIVATE_API' not found (required by /opt/Qt/Tools/QtCreator/bin/../lib/qtcreator/libAggregation.so.12)

上面信息的貌似证明我的猜测没错:Qt Online Installer 安装的所有二进制文件都是商用版的,与开源社区提供的在 ABI 上不兼容

把修复方案整理成了脚本,内容如下:

#!/bin/bash

# Qt 6 Creator Fcitx5 Issue Fixer
# Filename: qt6creator-fcitx5-fixer

app=$0
function fixer_help
{
  cat <<EOF
$app --fix|--clean QT_INSTALL_DIR QT_VERSION
--fix 执行修复动作
--clean 恢复修复动作所做的变动
QT_INSTALL_DIR  Qt 安装目录
QT_VERSION      修复时所使用的 Qt 版本号
示例:
qt6creator-fcitx5-fixer --fix /opt/Qt 6.6.1
qt6creator-fcitx5-fixer --clean /opt/Qt 6.6.1
关于 Qt 版本号:
打开 QtCreator->帮助->About Qt Creator(关于),找到 "Based on Qt 6.x.y"这样的字眼
那么 6.x.y 就是所要使用的版本号
但是!!你必须安装相应的 Qt 工具链!! 可以运行 QT_INSTALL_DIR/MaintenanceTool 来验证/补充安装
慎重!!你也可以尝试用其他你已安装的 6.x 版的 Qt 替代
EOF

}

if [ "$#" -ne 3 ]; then
  fixer_help
  exit 1
fi

qt_cmd=$1
shift

qt_dir=$(readlink -f $1)
qt_ver=$2
qt_lib=$qt_dir/Tools/QtCreator/lib/Qt 

case "$qt_cmd" in
  --fix)
    # 1. 准备 Fcitx5 Qt6 插件的源码及编译目录
    f5_src=$(mktemp -d)
    f5_bin=$(mktemp -d)
    Git clone https://Github.com/fcitx/fcitx5-qt.git $f5_src
    cd $f5_src
    git checkout $(git describe --abbrev=0 --tags --match "[0-9]*" $(git rev-list --tags --max-count=1))
    mkdir -p $f5_bin
    # 2. 准备 编译环境
    export LD_LIBRARY_PATH=$qt_dir/$qt_ver/lib
    export PATH=$qt_dir/$qt_ver/gcc_64/bin:$qt_dir/Tools/CMake/bin:$PATH
    
    # 3. 编译插件
    cmake \
      -DENABLE_QT5=OFF \
      -DENABLE_QT4=OFF \
      -DENABLE_QT6=ON \
      -DBUILD_ONLY_PLUGIN=ON \
      -DCMAKE_POSITION_INDEPENDENT_CODE=ON \
      -DCMAKE_BUILD_TYPE=RELEASE \
      -S $f5_src \
      -B $f5_bin
    cd $f5_bin
    make
    
    # 4. 复制 插件库 到 QtCreator
    cp -fv qt6/platforminputcontext/libfcitx5platforminputcontextplugin.so \
      $qt_dir/$qt_ver/gcc_64/plugins/platforminputcontexts/libfcitx5platforminputcontextplugin.so
    
    # 5. 清理临时文件
    rm -rf $f5_bin
    rm -rf $f5_src

    # 6. 替换官方库
    if [ -L $qt_lib ]; then
      rm -fv $qt_lib
    else
      mv -fv $qt_lib $qt_lib.online
    fi
    ln -vsT $qt_dir/$qt_ver $qt_lib
    echo "Fixed! Happy to play with Qt Creator!"
    ;;

    --clean)
    rm  -fv $qt_dir/$qt_ver/gcc_64/plugins/platforminputcontexts/libfcitx5platforminputcontextplugin.so
    if [ -L $qt_lib ]; then
      rm  -fv $qt_lib
      [ -d $qt_lib.online ] && mv -fvT $qt_lib.online $qt_lib
    fi
    echo "Cleaned up!"
    ;;

    *)
    fixer_help
    ;;
esac

下载连接:
qt6creator-fcitx5-fixer.tar.gz (1.4 KB)

1赞

你的解决方案不好。主要是这条 cmake 命令行错了。应该再加一个参数:

cmake -DCMAKE_PREFIX_PATH= /opt/Qt/Tools/QtCreator/lib/cmake/ ...

这样编译出来的 fcitx5 qt 模块才是安装器安装出来的 qt6. 不然像你现在这样子编译出来的就和系统的 qt6 相关。Qt6 的各个版本之间没有承诺二进制兼容。