qt5base-lts/tests/manual/qscreen/main.cpp
Shawn Rutledge 78f946f6dc QScreen manual test improvements: fields resize, better formatting
It's necessary to set the fieldGrowthPolicy on the QFormLayout in order
to have expanding fields on the Mac.  Geometry formatting with
negative x and y values looks better.  Display fewer
decimal digits for double fields.

Change-Id: Icb252c0c3fb7b605253e04c3361beba124570840
Reviewed-by: Samuel Rødal <samuel.rodal@digia.com>
2012-10-16 17:31:31 +02:00

106 lines
4.4 KiB
C++

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#include "propertywatcher.h"
#include <QApplication>
#include <QScreen>
#include <QWindow>
#include <QDebug>
#include <QFormLayout>
#include <QLineEdit>
int i = 0;
void updateSiblings(PropertyWatcher* w)
{
QLineEdit *siblingsField = w->findChild<QLineEdit *>("siblings");
QScreen* screen = (QScreen*)w->subject();
QStringList siblingsList;
foreach (QScreen *sibling, screen->virtualSiblings())
siblingsList << sibling->name();
siblingsField->setText(siblingsList.join(", "));
}
void screenAdded(QScreen* screen)
{
screen->setOrientationUpdateMask((Qt::ScreenOrientations)0x0F);
qDebug("\nscreenAdded %s siblings %d first %s", qPrintable(screen->name()), screen->virtualSiblings().count(),
(screen->virtualSiblings().isEmpty() ? "none" : qPrintable(screen->virtualSiblings().first()->name())));
PropertyWatcher *w = new PropertyWatcher(screen, QString::number(i++));
QLineEdit *siblingsField = new QLineEdit();
siblingsField->setObjectName("siblings");
siblingsField->setReadOnly(true);
w->layout()->insertRow(0, "virtualSiblings", siblingsField);
updateSiblings(w);
// This doesn't work. If the multiple screens are part of
// a virtual desktop (i.e. they are virtual siblings), then
// setScreen has no effect, and we need the code below to
// change the window geometry. If on the other hand the
// screens are really separate, so that windows are not
// portable between them, XCreateWindow needs to have not just
// a different root Window but also a different Display, in order to
// put the window on the other screen. That would require a
// different QXcbConnection. So this setScreen call doesn't seem useful.
//w->windowHandle()->setScreen(screen);
// But this works as long as the screens are all virtual siblings
w->show();
QRect geom = w->geometry();
geom.moveCenter(screen->geometry().center());
w->move(geom.topLeft());
// workaround for the fact that virtualSiblings is not a property,
// thus there is no change notification:
// allow the user to update the field manually
QObject::connect(w, &PropertyWatcher::updatedAllFields, &updateSiblings);
}
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
QList<QScreen *> screens = QGuiApplication::screens();
foreach (QScreen *screen, screens)
screenAdded(screen);
QObject::connect((const QGuiApplication*)QGuiApplication::instance(), &QGuiApplication::screenAdded, &screenAdded);
return a.exec();
}