QT webkit plugin 开发示例

来源：互联网发布：盐和避难所 for mac 编辑：程序博客网时间：2024/05/22 07:54

一、Fancybrowser 浏览器开发

1、webkitplugininterface.h

#ifndef WEBKITPLUGININTERFACE_H#define WEBKITPLUGININTERFACE_H#include <QWebPluginFactory>class WebKitPluginInterface{public:    WebKitPluginInterface(){};    virtual ~WebKitPluginInterface(){};    virtual QList<QWebPluginFactory::Plugin> plugins()const =0;    virtual QObject *create(const QString &mimeType,                            const QUrl &url,                            const QStringList &argumentNames,                            const QStringList &argumentValues) const =0;};//声明WebKitPluginInterface为一个接口Q_DECLARE_INTERFACE(WebKitPluginInterface, "com.plugin.uvchip.www/1.0")#endif // WEBKITPLUGININTERFACE_H

2、webkitpluginfactory.h

#ifndef WEBKITPLUGINFACTORY_H#define WEBKITPLUGINFACTORY_H#include <QWebPluginFactory>#include <QUrl>#include "webkitplugininterface.h"class WebkitPluginFactory : public QWebPluginFactory{    Q_OBJECTpublic:    WebkitPluginFactory();    QObject *create ( const QString & mimeType, const QUrl & url, const QStringList & argumentNames, const QStringList & argumentValues ) const;    QList<QWebPluginFactory::Plugin> plugins () const;private:    mutable QList<QList<QWebPluginFactory::Plugin> > pluginslist; // 插件列表    mutable QList<WebKitPluginInterface *> interfaces; //插件接口，这个接口是我们自定义的插件的同意接口。};#endif // WEBKITPLUGINFACTORY_H

3、webkitpluginfactory.cpp

#include "webkitpluginfactory.h"#include <QPluginLoader>#include <QDebug>#include <QDir>WebkitPluginFactory::WebkitPluginFactory() : QWebPluginFactory(){    qDebug()<<"=== jhluroom === WebkitPluginFactory::WebkitPluginFactory";}QList<QWebPluginFactory::Plugin> WebkitPluginFactory::plugins () const{    qDebug()<<"=== jhluroom === WebkitPluginFactory::create";    const char *pluginPath = "/home/jhlu/qt/qt-project/webkit/flashplugin-build-desktop";    static bool isFirst=true;    static QList<QWebPluginFactory::Plugin> plugins;    if(!isFirst)    {        return plugins;    }    isFirst=false;    plugins.clear();    QDir dir(pluginPath);    QStringList filters;    QString abspath=dir.absolutePath();    qDebug()<<"the webkit plugin dir is:"<< abspath;    //获取指定目录下的所有插件，linux下是插件库的后缀为so，windows下则是dll    filters<<"lib*.so";    QStringList files=dir.entryList(filters);    foreach(QString file,files)    {        file=dir.filePath(file);        qDebug()<<"the webkit plugin path is: "<<file;        QPluginLoader loader(file);        QObject * obj= loader.instance();        if(obj==0){qDebug()<<"error: "<<loader.errorString();}        WebKitPluginInterface * interface= qobject_cast<WebKitPluginInterface*> (obj);//载入自定义的接口，支持动态插件创建        qDebug()<<"loading plugins is: "<<interface->plugins().at(0).name;        plugins.append(interface->plugins());        pluginslist.append(interface->plugins());        interfaces.append(interface);    }    if(plugins.isEmpty()){        qDebug()<<"no plugins is loaded!";    }    return plugins;}QObject * WebkitPluginFactory::create ( const QString & mimeType, const QUrl & url, const QStringList & argumentNames, const QStringList & argumentValues ) const{    qDebug()<<"=== jhluroom === WebkitPluginFactory::create";    for(int i=0;i<pluginslist.size();i++)    {        for( int j=0;j< pluginslist[i].size();j++)        {            foreach(QWebPluginFactory::MimeType mt, pluginslist[i][j].mimeTypes)            {                if(mt.name == mimeType) //根据MIME类型，创建相应的插件实例                {                    return interfaces[i]->create( mimeType, url, argumentNames, argumentValues);                }            }        }    }    return NULL; //如果没有，直接返回NULL，webkit会进行处理的}

4、main.cpp

/******************************************************************************** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).** All rights reserved.** Contact: Nokia Corporation (qt-info@nokia.com)**** This file is part of the examples of the Qt Toolkit.**** $QT_BEGIN_LICENSE:BSD$** You may use this file under the terms of the BSD license as follows:**** "Redistribution and use in source and binary forms, with or without** modification, are permitted provided that the following conditions are** met:**   * Redistributions of source code must retain the above copyright**     notice, this list of conditions and the following disclaimer.**   * Redistributions in binary form must reproduce the above copyright**     notice, this list of conditions and the following disclaimer in**     the documentation and/or other materials provided with the**     distribution.**   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor**     the names of its contributors may be used to endorse or promote**     products derived from this software without specific prior written**     permission.**** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."** $QT_END_LICENSE$******************************************************************************/#include <QtGui>#include <QWebView>#include "webkitpluginfactory.h"int main(int argc, char * argv[]){    QApplication app(argc, argv);    QWebView view;    view.settings()->setAttribute(QWebSettings::PluginsEnabled, true);    view.page()->setPluginFactory(new WebkitPluginFactory());    view.load(QUrl("file:///home/jhlu/qt/qt-project/webkit/webkit-plugin-test.html"));    view.show();    return app.exec();}

二、Plugin 开发

1、webkitplugininterface.h

#ifndef WEBKITPLUGININTERFACE_H#define WEBKITPLUGININTERFACE_H#include <QWebPluginFactory>class WebKitPluginInterface{public:    WebKitPluginInterface(){};    virtual ~WebKitPluginInterface(){};    virtual QList<QWebPluginFactory::Plugin> plugins()const =0;    virtual QObject *create(const QString &mimeType,                            const QUrl &url,                            const QStringList &argumentNames,                            const QStringList &argumentValues) const =0;};//声明WebKitPluginInterface为一个接口Q_DECLARE_INTERFACE(WebKitPluginInterface, "com.plugin.uvchip.www/1.0")#endif // WEBKITPLUGININTERFACE_H

2、flashplugin.h

#ifndef FLASHPLUGIN_H#define FLASHPLUGIN_H#if defined(FLASHPLUGIN_LIBRARY)#  define FLASHPLUGINSHARED_EXPORT Q_DECL_EXPORT#else#  define FLASHPLUGINSHARED_EXPORT Q_DECL_IMPORT#endif#include "webkitplugininterface.h"#include <QtPlugin>class FLASHPLUGINSHARED_EXPORT FlashPlugin : public QObject, public WebKitPluginInterface  {    Q_OBJECT    Q_INTERFACES(WebKitPluginInterface) //声明WebKitPluginInterface是一个接口public:            FlashPlugin();    ~FlashPlugin();    QList<QWebPluginFactory::Plugin> plugins()const ;    QObject *create(const QString &mimeType,                    const QUrl &url,                    const QStringList &argumentNames,                    const QStringList &argumentValues) const ;};#endif // FLASHPLUGIN_H

3、flashplugin.cpp

#include "flashplugin.h"#include <QTextEdit>#include <QUrl>#include <QDebug>FlashPlugin::FlashPlugin(): WebKitPluginInterface(){};FlashPlugin::~FlashPlugin(){};QList<QWebPluginFactory::Plugin> FlashPlugin::plugins()const{    qDebug()<<"FlashPlugin::plugins";    QWebPluginFactory::MimeType mimeType;    mimeType.name="application/x-shockwave-flash";    mimeType.description=QObject::tr("flash");    mimeType.fileExtensions.append(".flv");    mimeType.fileExtensions.append(".f4v");    mimeType.fileExtensions.append(".swf");    QList<QWebPluginFactory::MimeType> mimeTypes;    mimeTypes.append(mimeType);    QWebPluginFactory::Plugin plugin;    plugin.name=QObject::tr("jhluroom flash plugin");    plugin.description=QObject::tr("jhluroom flash plugin description");    plugin.mimeTypes=mimeTypes;    QList<QWebPluginFactory::Plugin> plugins ;    plugins.append(plugin);    return plugins;}QObject *FlashPlugin::create(const QString &mimeType,                             const QUrl &url,                             const QStringList &argumentNames,                             const QStringList &argumentValues) const{    qDebug()<<"FlashPlugin::create";    QTextEdit * edit= new QTextEdit();    edit->setObjectName("flashPlugin");    edit->setPlainText(mimeType + ":\n" + url.toString() +"\n"                       +QString::fromUtf8("Flash webkit plugin implement by jhluroom")+"\n");    Q_UNUSED(argumentNames);    Q_UNUSED(argumentValues);    return edit;}//Q_EXPORT_PLUGIN2()必不可少，只有这样FlashPlugin插件类才为外部可见，插件名为WebkitPluginFlashQ_EXPORT_PLUGIN2(WebkitPluginFlash, FlashPlugin)

三、webkit-plugin-test.html

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=gb2312" /><title>webkit plugin test</title></head><body><object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=7,0,19,0" width="500" height="300">  <param name="movie" value="lvjh.swf" />  <param name="quality" value="high" />  <embed src="sf" quality="high" pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash" width="500" height="300"></embed></object></body></html>