docs: 更新readme文件
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README.md
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README.md
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# ukui-menu
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### 简介
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开始菜单(ukui-menu)是UKUI桌面环境的一部分,是一个简易的应用程序启动器,通常与UKUI一起发布。
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> Application launcher for ukui desktop environment
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ukui-menu is a convenient application launcher which includes
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normal and full-screen modes, it also has a plugin page which can be used
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to load extra plugins like favourite apps page, recent files page, etc.
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* 基本功能
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1. 显示应用程序图标列表
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2. 左键点击应用图标打开应用程序
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3. 右键点击应用图标显示右键菜单
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* 额外功能 (由开始菜单扩展插件实现)
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1. 应用收藏夹
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2. 最近文件列表
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3. AI助手
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### 扩展插件 (基于版本:upstream/4.10.1.0)
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可扩展性是开始菜单的设计目标之一,目的是让用户可以更方便快捷的使用一些额外功能。
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当然用户也可以自行编写自己的扩展插件,以下是关于扩展插件的简单介绍。
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* 插件入口
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扩展插件在开始菜单中被抽象为MenuExtensionPlugin类,该接口是开始菜单插件的主入口。基于该接口可以开发多种插件。
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```c++
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```c++
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hi, wellcome to new ukui-menu 4.0.0.0.
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// 头文件路径为:src/extension/menu-extension-plugin.h
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class Q_DECL_EXPORT MenuExtensionPlugin : public QObject
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{
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Q_OBJECT
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public:
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explicit MenuExtensionPlugin(QObject *parent = nullptr);
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~MenuExtensionPlugin() override;
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/**
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* 插件的唯一id,会被用于区分插件
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* @return 唯一id
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*/
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virtual QString id() = 0;
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/**
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* 创建一个Widget扩展
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* @return 返回nullptr代表不生产此插件
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*/
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virtual WidgetExtension *createWidgetExtension() = 0;
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/**
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* 创建上下文菜单扩展
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* @return 返回nullptr代表不生产此插件
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*/
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virtual ContextMenuExtension *createContextMenuExtension() = 0;
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};
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```
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```
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### To be continued...
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目前4.10.1.0版本的开始菜单提供了以下扩展点用于支持扩展开发:
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1. 组件扩展(WidgetExtension)
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该类型的插件需要提供一个ui界面显示在开始菜单的插件页。
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```c++
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// 头文件路径:src/extension/widget-extension.h
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class WidgetExtension : public QObject
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{
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Q_OBJECT
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public:
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explicit WidgetExtension(QObject *parent = nullptr);
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virtual int index() const;
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virtual MetadataMap metadata() const = 0;
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// 兼容老版本
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virtual QVariantMap data();
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virtual void receive(const QVariantMap &data);
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Q_SIGNALS:
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void dataUpdated();
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};
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```
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2. 右键菜单扩展(ContextMenuExtension)
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该类型的插件会向开始菜单的右键菜单中添加一些选择项,用于执行特定的操作。
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```c++
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// 头文件路径:src/extension/context-menu-extension.h
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class ContextMenuExtension
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{
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public:
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virtual ~ContextMenuExtension() = default;
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/**
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* 控制菜单项显示在哪个位置
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* 对于第三方项目们应该选择-1,或者大于1000的值
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* @return -1:表示随机放在最后
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*/
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virtual int index() const;
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/**
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* 根据data生成action,或者子菜单
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*
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* @param data app信息
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* @param parent action最终显示的QMenu
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* @param location 请求菜单的位置
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* @param locationId 位置的描述信息,可选的值有:all,category,letterSort和favorite等插件的id
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* @return
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*/
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virtual QList<QAction*> actions(const DataEntity &data, QMenu *parent, const MenuInfo::Location &location, const QString &locationId) = 0;
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};
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```
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* 插件开发实践
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推荐使用cmake作为构建工具
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> 建议参考此项目:https://gitee.com/openkylin/ukui-menu-extensions.git
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开始菜单提供cmake文件和pc(pkgconfig)文件用于导入开发文件。
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```cmake
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# 下面是基于cmake的大致步骤
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find_package(ukui-menu REQUIRED)
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target_link_libraries(${PROJECT_NAME} PRIVATE
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ukui-menu
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)
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# 下面是基于pkgconfig的大致步骤
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find_package(PkgConfig REQUIRED)
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pkg_check_modules(ukui-menu REQUIRED ukui-menu)
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include_directories(ukui-menu_INCLUDE_DIRS)
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link_directories(ukui-menu_LIBRARY_DIRS)
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link_directories(ukui-menu_LIBRARIES)
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target_link_libraries(${PROJECT_NAME} PRIVATE ukui-menu_LIBRARIES)
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```
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* 插件安装路径
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```cmake
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install(TARGETS ${EXTENSION_NAME} LIBRARY DESTINATION "/usr/lib/${CMAKE_LIBRARY_ARCHITECTURE}/ukui-menu/extensions")
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```
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