CTK插件-入门打印

一、生成插件

0、环境说明

编译ctk：Qt5.12.2+MSVC2017_64+Cmake

生成插件：Qt5.12.2+MSVC2017_64+qmake

1、服务类，纯虚类，提供接口

abslogservice.h

#ifndef ABSLOGSERVICE_H
#define ABSLOGSERVICE_H

#include <QObject>
class AbsLogService{
public:
    virtual ~AbsLogService(){}
    virtual void log(QString info) = 0;
};
Q_DECLARE_INTERFACE(AbsLogService,"judesmorning.zxy.AbsLogService")


#endif // ABSLOGSERVICE_H

2、实现插件类，实现纯虚函数

logservice.h

#ifndef LOGSERVICE_H
#define LOGSERVICE_H
#include <QObject>
#include "abslogservice.h"

class ctkPluginContext;

class LogService : public QObject, public AbsLogService
{
    Q_OBJECT
    Q_INTERFACES(AbsLogService)//表名当前插件类实现这个服务接口
public:
    LogService(ctkPluginContext* context);
    void log(QString info);
};

#endif // LOGSERVICE_H

logservice.cpp

#include "logservice.h"
#include <QDebug>
#include "ctkPluginContext.h"
#include <QTime>
LogService::LogService(ctkPluginContext* context)
{
    context->registerService<AbsLogService>(this);
}

void LogService::log(QString info)
{
    qDebug()<<QTime::currentTime().toString("HH:mm:ss    ") + info;//打印加上时间戳
}

3、激活插件，加入ctk框架的生命周期中

firstpluginactivator.h

#ifndef FIRSTPLUGINACTIVATOR_H
#define FIRSTPLUGINACTIVATOR_H


#include <QObject>
#include "ctkPluginActivator.h"
#include "ctkPluginContext.h"
#include "logservice.h"
class FirstPluginActivator : public QObject, public ctkPluginActivator
{
    Q_OBJECT
    Q_INTERFACES(ctkPluginActivator)
    Q_PLUGIN_METADATA(IID "LogPlugin")

public:
    FirstPluginActivator();
    void start(ctkPluginContext *context);
    void stop(ctkPluginContext *context);
private:
    QScopedPointer<AbsLogService> m_log;//智能指针,自动析构回收
};

#endif // FIRSTPLUGINACTIVATOR_H

firstpluginactivator.cpp

#include "firstpluginactivator.h"
#include <QDebug>
FirstPluginActivator::FirstPluginActivator()
{

}
void FirstPluginActivator::start(ctkPluginContext *context)
{
    qDebug() << "my plugin start";
    m_log.reset(new LogService(context));
}

void FirstPluginActivator::stop(ctkPluginContext *context)
{
    qDebug() << "my plugin stop";
    Q_UNUSED(context)
}

4、添加资源文件

资源名随便去，前缀为：TARGET/META_INF，文件名为：MANIFEST.MF

MANIFEST.MF内容：

 有些教程上说是前缀是工程名/META_INF,经过测试工程名、MANIFEST.MF中的符号名、IID中的字符串都可以随意取，只需要满足这里的前缀是：TARGET/META_INF格式

有很多可填内容，在ctkPluginConstants.h中能找到相关宏定义

5、.pro文件

QT += core
QT -= gui

TARGET = ctk-plugin-first
TEMPLATE = lib
CONFIG += plugin
#ctk源码路径
INCLUDEPATH += $$PWD/include/Core 
            += $$PWD/include/PluginFramework
#ctk安装路径,主要用到ctkPluginFrameworkExport.h等
INCLUDEPATH += C:/Users/Administrator/Desktop/new/CTK-master/build_msvc2017/CTK-build/Libs/PluginFramework
INCLUDEPATH += C:/Users/Administrator/Desktop/new/CTK-master/build_msvc2017/CTK-build/Libs/Core
#ctk的动态库路径
LIBS += -LC:/Users/Administrator/Desktop/new/CTK-master/build_msvc2017/CTK-build/bin/Debug -lCTKCore -lCTKPluginFramework

HEADERS += 
    firstpluginactivator.h 
    logservice.h 
    abslogservice.h

SOURCES += 
    firstpluginactivator.cpp 
    logservice.cpp

RESOURCES += 
    resource.qrc

注意：target的名字最好和工程名一致，不然可能出现device not open错误

6、编译生成插件

二、使用此插件

1、main.cpp

#include <QCoreApplication>
#include <ctkPluginFrameworkFactory.h>
#include <ctkPluginFramework.h>
#include <ctkPluginException.h>
#include <ctkPluginContext.h>
#include <QtDebug>
#include <QUrl>

#include "abslogservice.h"

//插件路径
QString static firstPlugin_filePath = "C:/Users/Administrator/Desktop/myctk2017/ctk-plugin-first/debug/ctk-plugin-first.dll";

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);

    ctkPluginFrameworkFactory frameworkFactory;
    QSharedPointer<ctkPluginFramework> framework = frameworkFactory.getFramework();

    // 初始化并启动插件框架
    try {
        framework->init();
        framework->start();
        qDebug() << "CTK plugin framework start...";
    } catch (const ctkPluginException &e) {
        qDebug() << "CTK plugin framework init err: " << e.what();
        return -1;
    }

    // 获取插件服务的contex
    ctkPluginContext* pluginContext = framework->getPluginContext();
    try {
        // 安装插件
        QSharedPointer<ctkPlugin> plugin = pluginContext->installPlugin(QUrl::fromLocalFile(firstPlugin_filePath));
        qDebug() << QString("Plugin[%1_%2] installed...").arg(plugin->getSymbolicName()).arg(plugin->getVersion().toString());
        // 启动插件
        plugin->start(ctkPlugin::START_TRANSIENT);
        qDebug() << "Plugin start...";
    } catch (const ctkPluginException &e) {
        qDebug() << QString("Failed install or run plugin: ") << e.what();
        return -2;
    }
    // 获取服务引用
    ctkServiceReference reference = pluginContext->getServiceReference<AbsLogService>();
    if (reference) {
        // 获取指定 ctkServiceReference 引用的服务对象
        AbsLogService* service = qobject_cast<AbsLogService*>(pluginContext->getService(reference));
        if (service != Q_NULLPTR) {
            // 调用服务
            service->log("hello hhh..");
        }
    }
    return a.exec();
}

2、.pro

QT -= gui

CONFIG += console
CONFIG -= app_bundle

INCLUDEPATH += $$PWD/include/Core 
            += $$PWD/include/PluginFramework 
            += $$PWD/include/mydll   #存放插件的服务接口类的头文件
#ctk的源码
INCLUDEPATH += C:/Users/Administrator/Desktop/new/CTK-master/build_msvc2017/CTK-build/Libs/PluginFramework
INCLUDEPATH += C:/Users/Administrator/Desktop/new/CTK-master/build_msvc2017/CTK-build/Libs/Core
#ctk的动态库
LIBS += -LC:/Users/Administrator/Desktop/new/CTK-master/build_msvc2017/CTK-build/bin/Debug -lCTKCore -lCTKPluginFramework

DEFINES += QT_DEPRECATED_WARNINGS
SOURCES += 
        main.cpp

# Default rules for deployment.
qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += target

注意在ctk环境ok的情况下，只需要用到插件的额dll和插件的纯虚类头文件

3、运行

ps：附上学习ctk的流程

1、编译CTK【可用现成的】
2、编译插件：日志插件【用打印代替存储日志】
3、新建工程：使用日志插件，并调用接口记录一句话
4、插件的依赖测试：编写日志插件和打印插件，日志插件依赖打印插件
5、编写两个插件通信：两种通信方式都需要使用
6、编写插件：使用服务工厂获取服务
7、编写插件：监听CTK所有事件
8、编写插件：使用服务追踪获取服务

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原文地址：https://www.cnblogs.com/judes/p/13220386.html