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/*
* You may use, modify and distribute without any limitation
*/
/**
* Opie and Qtopia uses a component system called QCOM
* which was first part of the Qt 3.0 API but was made
* prviate during the betas. Opie and Qtopia still use it
* and we're happy with it.
* Every starts with the QUnknownInterface. It supports functions
* for reference counting and the most important one
* is for a query. Every QCOM interface got a global unique id ( GUID,UUID )
* query is used to see if a interface is supported by
* a dynamic shared object ( dso / plugin )
* For tasks like loading Applications, InputMethods, Today, MenuButton,
* Taskbar, Style, Email Client there are specefic Interfaces you
* need to implement. The interfaces inherits from QUnknownInterface and
* you'll need inherit from the interface.
* As example we will use the Taskbar interface
*/
#ifndef SIMPLE_OPIE_EXAMPLE_APPLET_H
#define SIMPLE_OPIE_EXAMPLE_APPLET_H
/*
* The taskbar applet interfaces wants us to implement position() and applet()
* additionally we need to implement add(), release() and queryInterface for QUnknownInterface
* luckiy there is a macro for the reference counting
* We provide an Implementation of the interface.
*/
#include <qwidget.h>
#include <qlist.h>
#include <qpe/taskbarappletinterface.h>
/*
* Because we only draw an Icon in a fixed width and height
* we declare and define SimpleApplet here and you could use QLabel
* setPixmap or use QWidget and draw yourself.
* You might also want to reimplement mouse*Event to use some simple actions
*/
class SimpleApplet : public QWidget {
Q_OBJECT
public:
SimpleApplet(QWidget *parent);
~SimpleApplet();
private:
void mousePressEvent( QMouseEvent* );
void paintEvent( QPaintEvent* );
QPixmap *m_pix;
};
class SimpleAppletImpl : public TaskbarAppletInterface {
public:
SimpleAppletImpl();
virtual ~SimpleAppletImpl();
QRESULT queryInterface( const QUuid&, QUnknownInterface** );
QWidget *applet( QWidget* parent );
int position()const;
/*
* macro for reference countint
* if reference drops to zero
* delete this is called
*/
Q_REFCOUNT
private:
QList<SimpleApplet> m_applets;
};
#endif
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