Desktop environment for mobile devices

[zuck]

Hi, I need to implement a simple custom desktop environment for a mobile device (it's a learning exercise). I'm using Qt Embedded for Linux. I want to realize the classic structure of a mobile desktop:

- A top-level status bar.
- An active area where windows are painted.

The status bar and active area management are implemented in a server application, other windows are part of separated applications. I want that each window is painted maximized (only one window per time) only in the active area.

Currently I've written this code snippet:

Server

#include "server.h"
#include <QtGui/QDesktopWidget>
#include <QtGui/QWSServer>
 
Server::Server(int argc, char **argv)
    :   QApplication(argc, argv, QApplication::GuiServer)
{
    QRect screen_rect = this->desktop()->screenGeometry();
    QRect active_rect = screen_rect.adjusted(0, m_statusBar.height(), 0, 0);
 
    m_statusBar.show();
 
    qwsServer->setMaxWindowRect(active_rect);
}

#include "server.h"
#include <QtGui/QDesktopWidget>
#include <QtGui/QWSServer>

Server::Server(int argc, char **argv)
    :   QApplication(argc, argv, QApplication::GuiServer)
{
    QRect screen_rect = this->desktop()->screenGeometry();
    QRect active_rect = screen_rect.adjusted(0, m_statusBar.height(), 0, 0);

    m_statusBar.show();
    
    qwsServer->setMaxWindowRect(active_rect);
}

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Client1

#include "client1.h"
 
Client1::Client1(int argc, char **argv)
    : QApplication(argc, argv, QApplication::GuiClient)
{
    m_mainWindow.showMaximized();
}

#include "client1.h"

Client1::Client1(int argc, char **argv)
    : QApplication(argc, argv, QApplication::GuiClient)
{
    m_mainWindow.showMaximized();
}

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It works but if a client application shows a window not maximized, the window overlaps the status bar and I don't want this.

Another question: how can I do this with QGraphicsView instead?

[high_flyer]

It works but if a client application shows a window not maximized, the window overlaps the status bar and I don't want this.

you can use the Qt::WindowStaysOnTopHint flag for the status bar

[zuck]

Thanks, it works. But how can I force the window's region to the active area?

[high_flyer]

you can set a widget to be a desktop widget also with a window flag.

[zuck]

And after that?

I've tried to create a custom widget with Qt::Desktop flag set, but windows seem to ignore it.