I have been playing a bit around with Maemo and writing Qt apps for n900. I ended up needing a rotation aware QMainWindow a couple of times, so I ended up abstracting it away in my own MaemoMainWindow, which I just wanted to share. It has enough ifdefs to also build against ‘normal’ Qt, outside Maemo.
Have fun. Available under any license.
maemomainwindow.h:
#ifndef MAEMOMAINWINDOW_H
#define MAEMOMAINWINDOW_H
#include <QMainWindow>
class MaemoMainWindow : public QMainWindow
{
Q_OBJECT
public:
MaemoMainWindow (QWidget* parent = 0, Qt::WindowFlags flags = 0);
virtual ~MaemoMainWindow();
protected:
virtual bool event (QEvent* event);
Q_SIGNALS:
void orientationChanged(Qt::Orientation newOrientation);
private Q_SLOTS:
void orientationChangedSlot(const QString& newOrientation);
private:
Qt::Orientation m_orientation;
};
#endif // MAEMOMAINWINDOW_H
maemomainwindow.cpp:
#include "maemomainwindow.h"
#ifdef Q_WS_MAEMO_5
#include <mce/mode-names.h>
#include <mce/dbus-names.h>
#endif
#ifdef Q_WS_MAEMO_5
#include <QDBusConnection>
#include <QDBusMessage>
#include <QEvent>
#endif
MaemoMainWindow::MaemoMainWindow (QWidget* parent, Qt::WindowFlags flags) : QMainWindow (parent, flags) {
#ifdef Q_WS_MAEMO_5
QDBusConnection::systemBus().connect(QString(), MCE_SIGNAL_PATH, MCE_SIGNAL_IF,
MCE_DEVICE_ORIENTATION_SIG,
this,
SLOT(orientationChangedSlot(QString)));
#endif
}
MaemoMainWindow::~MaemoMainWindow() {
}
void MaemoMainWindow::orientationChangedSlot (const QString& newOrientation) {
#ifdef Q_WS_MAEMO_5
if (newOrientation == QLatin1String(MCE_ORIENTATION_PORTRAIT)) {
setAttribute(Qt::WA_Maemo5ForcePortraitOrientation, true);
emit orientationChanged(Qt::Vertical);
} else {
setAttribute(Qt::WA_Maemo5ForceLandscapeOrientation, true);
emit orientationChanged(Qt::Horizontal);
}
#else
Q_UNUSED(newOrientation);
#endif
}
bool MaemoMainWindow::event (QEvent* event) {
#ifdef Q_WS_MAEMO_5
switch (event->type()) {
case QEvent::WindowActivate:
QDBusConnection::systemBus().call(
QDBusMessage::createMethodCall(MCE_SERVICE, MCE_REQUEST_PATH,
MCE_REQUEST_IF,
MCE_ACCELEROMETER_ENABLE_REQ));
break;
case QEvent::WindowDeactivate:
QDBusConnection::systemBus().call(
QDBusMessage::createMethodCall(MCE_SERVICE, MCE_REQUEST_PATH,
MCE_REQUEST_IF,
MCE_ACCELEROMETER_DISABLE_REQ));
break;
default:
break;
}
#endif
return QMainWindow::event (event);
}
Update: reformatted code. Thought wordpres and <code> was smart. Thanks Ken.
