genode/qt4/include/qpluginwidget/qpluginwidget.h
2013-01-10 21:44:47 +01:00

108 lines
2.2 KiB
C++

/*
* \brief A Qt Widget that can load a plugin application and show its Nitpicker view
* \author Christian Prochaska
* \date 2010-08-26
*/
/*
* Copyright (C) 2010-2013 Genode Labs GmbH
*
* This file is part of the Genode OS framework, which is distributed
* under the terms of the GNU General Public License version 2.
*/
#ifndef QPLUGINWIDGET_H
#define QPLUGINWIDGET_H
#include <QtGui>
#include <QtNetwork>
#include <loader_session/connection.h>
#include <qnitpickerviewwidget/qnitpickerviewwidget.h>
enum Plugin_loading_state
{
LOADING,
LOADED,
NETWORK_ERROR,
INFLATE_ERROR,
QUOTA_EXCEEDED_ERROR,
ROM_CONNECTION_FAILED_EXCEPTION,
TIMEOUT_EXCEPTION
};
class QPluginWidget;
/* separate class, because meta object features are not supported in nested classes */
class PluginStarter : public QThread
{
Q_OBJECT
private:
QUrl _plugin_url;
QByteArray _args;
int _max_width;
int _max_height;
Loader::Connection *_pc;
enum Plugin_loading_state _plugin_loading_state;
QString _plugin_loading_error_string;
QNetworkAccessManager *_qnam;
QNetworkReply *_reply;
void _start_plugin(QString &file_name, QByteArray const &file_buf);
protected slots:
void networkReplyFinished();
public:
PluginStarter(QUrl plugin_url, QString &args,
int max_width, int max_height);
void run();
enum Plugin_loading_state plugin_loading_state() { return _plugin_loading_state; }
QString &plugin_loading_error_string() { return _plugin_loading_error_string; }
Nitpicker::View_capability plugin_view(int *w, int *h, int *buf_x, int *buf_y);
signals:
void finished();
};
class QPluginWidget : public QNitpickerViewWidget
{
Q_OBJECT
private:
enum Plugin_loading_state _plugin_loading_state;
QString _plugin_loading_error_string;
PluginStarter *_plugin_starter;
int _max_width;
int _max_height;
static QPluginWidget *_last;
public:
enum { RAM_QUOTA = 5*1024*1024 };
void cleanup();
protected:
virtual void paintEvent(QPaintEvent *event);
protected slots:
void pluginStartFinished();
public:
QPluginWidget(QWidget *parent, QUrl plugin_url, QString &args, int max_width = -1, int max_height = -1);
~QPluginWidget();
};
#endif // QPLUGINWIDGET_H