Say hello to QtQuick module

This change moves the QtQuick 2 types and C++ API (including
SceneGraph) to a new module (AKA library), QtQuick.

99% of this change is moving files from src/declarative to
src/quick, and from tests/auto/declarative to
tests/auto/qtquick2.

The loading of QtQuick 2 ("import QtQuick 2.0") is now delegated to
a plugin, src/imports/qtquick2, just like it's done for QtQuick 1.

All tools, examples, and tests that use QtQuick C++ API have gotten
"QT += quick" or "QT += quick-private" added to their .pro file.

A few additional internal QtDeclarative classes had to be exported
(via Q_DECLARATIVE_PRIVATE_EXPORT) since they're needed by the
QtQuick 2 implementation.

The old header locations (e.g. QtDeclarative/qquickitem.h) will
still be supported for some time, but will produce compile-time
warnings. (To avoid the QtQuick implementation using the
compatibility headers (since QtDeclarative's includepath comes
first), a few include statements were modified, e.g. from
"#include <qsgnode.h>" to "#include <QtQuick/qsgnode.h>".)

There's a change in qtbase that automatically adds QtQuick to the
module list if QtDeclarative is used. Together with the compatibility
headers, this should help reduce the migration pain for existing
projects.

In theory, simply getting an existing QtDeclarative-based project
to compile and link shouldn't require any changes for now -- but
porting to the new scheme is of course recommended, and will
eventually become mandatory.

Task-number: QTBUG-22889
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
Change-Id: Ia52be9373172ba2f37e7623231ecb060316c96a7
Reviewed-by: Kent Hansen <kent.hansen@nokia.com>
Reviewed-by: Sergio Ahumada <sergio.ahumada@nokia.com>

1 files changed, 324 insertions, 0 deletions

diff --git a/src/quick/util/qdeclarativetimer.cpp b/src/quick/util/qdeclarativetimer.cpp
new file mode 100644
index 0000000000..a4a2362680
--- /dev/null
+++ b/src/quick/util/qdeclarativetimer.cpp
@@ -0,0 +1,324 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtDeclarative module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this
+** file. Please review the following information to ensure the GNU Lesser
+** General Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qdeclarativetimer_p.h"
+
+#include <QtCore/qcoreapplication.h>
+#include <QtCore/qpauseanimation.h>
+#include <qdebug.h>
+
+#include <private/qobject_p.h>
+
+QT_BEGIN_NAMESPACE
+
+
+
+class QDeclarativeTimerPrivate : public QObjectPrivate
+{
+    Q_DECLARE_PUBLIC(QDeclarativeTimer)
+public:
+    QDeclarativeTimerPrivate()
+        : interval(1000), running(false), repeating(false), triggeredOnStart(false)
+        , classBegun(false), componentComplete(false), firstTick(true) {}
+    int interval;
+    QPauseAnimation pause;
+    bool running : 1;
+    bool repeating : 1;
+    bool triggeredOnStart : 1;
+    bool classBegun : 1;
+    bool componentComplete : 1;
+    bool firstTick : 1;
+};
+
+/*!
+    \qmlclass Timer QDeclarativeTimer
+    \inqmlmodule QtQuick 2
+    \ingroup qml-utility-elements
+    \brief The Timer item triggers a handler at a specified interval.
+
+    A Timer can be used to trigger an action either once, or repeatedly
+    at a given interval.
+
+    Here is a Timer that shows the current date and time, and updates
+    the text every 500 milliseconds. It uses the JavaScript \c Date
+    object to access the current time.
+
+    \qml
+    import QtQuick 1.0
+
+    Item {
+        Timer {
+            interval: 500; running: true; repeat: true
+            onTriggered: time.text = Date().toString()
+        }
+
+        Text { id: time }
+    }
+    \endqml
+
+    The Timer element is synchronized with the animation timer.  Since the animation
+    timer is usually set to 60fps, the resolution of Timer will be
+    at best 16ms.
+
+    If the Timer is running and one of its properties is changed, the
+    elapsed time will be reset.  For example, if a Timer with interval of
+    1000ms has its \e repeat property changed 500ms after starting, the
+    elapsed time will be reset to 0, and the Timer will be triggered
+    1000ms later.
+
+    \sa {declarative/toys/clocks}{Clocks example}
+*/
+
+QDeclarativeTimer::QDeclarativeTimer(QObject *parent)
+    : QObject(*(new QDeclarativeTimerPrivate), parent)
+{
+    Q_D(QDeclarativeTimer);
+    connect(&d->pause, SIGNAL(currentLoopChanged(int)), this, SLOT(ticked()));
+    connect(&d->pause, SIGNAL(finished()), this, SLOT(finished()));
+    d->pause.setLoopCount(1);
+    d->pause.setDuration(d->interval);
+}
+
+/*!
+    \qmlproperty int QtQuick2::Timer::interval
+
+    Sets the \a interval between triggers, in milliseconds.
+
+    The default interval is 1000 milliseconds.
+*/
+void QDeclarativeTimer::setInterval(int interval)
+{
+    Q_D(QDeclarativeTimer);
+    if (interval != d->interval) {
+        d->interval = interval;
+        update();
+        emit intervalChanged();
+    }
+}
+
+int QDeclarativeTimer::interval() const
+{
+    Q_D(const QDeclarativeTimer);
+    return d->interval;
+}
+
+/*!
+    \qmlproperty bool QtQuick2::Timer::running
+
+    If set to true, starts the timer; otherwise stops the timer.
+    For a non-repeating timer, \a running is set to false after the
+    timer has been triggered.
+
+    \a running defaults to false.
+
+    \sa repeat
+*/
+bool QDeclarativeTimer::isRunning() const
+{
+    Q_D(const QDeclarativeTimer);
+    return d->running;
+}
+
+void QDeclarativeTimer::setRunning(bool running)
+{
+    Q_D(QDeclarativeTimer);
+    if (d->running != running) {
+        d->running = running;
+        d->firstTick = true;
+        emit runningChanged();
+        update();
+    }
+}
+
+/*!
+    \qmlproperty bool QtQuick2::Timer::repeat
+
+    If \a repeat is true the timer is triggered repeatedly at the
+    specified interval; otherwise, the timer will trigger once at the
+    specified interval and then stop (i.e. running will be set to false).
+
+    \a repeat defaults to false.
+
+    \sa running
+*/
+bool QDeclarativeTimer::isRepeating() const
+{
+    Q_D(const QDeclarativeTimer);
+    return d->repeating;
+}
+
+void QDeclarativeTimer::setRepeating(bool repeating)
+{
+    Q_D(QDeclarativeTimer);
+    if (repeating != d->repeating) {
+        d->repeating = repeating;
+        update();
+        emit repeatChanged();
+    }
+}
+
+/*!
+    \qmlproperty bool QtQuick2::Timer::triggeredOnStart
+
+    When a timer is started, the first trigger is usually after the specified
+    interval has elapsed.  It is sometimes desirable to trigger immediately
+    when the timer is started; for example, to establish an initial
+    state.
+
+    If \a triggeredOnStart is true, the timer is triggered immediately
+    when started, and subsequently at the specified interval. Note that if
+    \e repeat is set to false, the timer is triggered twice; once on start,
+    and again at the interval.
+
+    \a triggeredOnStart defaults to false.
+
+    \sa running
+*/
+bool QDeclarativeTimer::triggeredOnStart() const
+{
+    Q_D(const QDeclarativeTimer);
+    return d->triggeredOnStart;
+}
+
+void QDeclarativeTimer::setTriggeredOnStart(bool triggeredOnStart)
+{
+    Q_D(QDeclarativeTimer);
+    if (d->triggeredOnStart != triggeredOnStart) {
+        d->triggeredOnStart = triggeredOnStart;
+        update();
+        emit triggeredOnStartChanged();
+    }
+}
+
+/*!
+    \qmlmethod QtQuick2::Timer::start()
+    \brief Starts the timer.
+
+    If the timer is already running, calling this method has no effect.  The
+    \c running property will be true following a call to \c start().
+*/
+void QDeclarativeTimer::start()
+{
+    setRunning(true);
+}
+
+/*!
+    \qmlmethod QtQuick2::Timer::stop()
+    \brief Stops the timer.
+
+    If the timer is not running, calling this method has no effect.  The
+    \c running property will be false following a call to \c stop().
+*/
+void QDeclarativeTimer::stop()
+{
+    setRunning(false);
+}
+
+/*!
+    \qmlmethod QtQuick2::Timer::restart()
+    \brief Restarts the timer.
+
+    If the Timer is not running it will be started, otherwise it will be
+    stopped, reset to initial state and started.  The \c running property
+    will be true following a call to \c restart().
+*/
+void QDeclarativeTimer::restart()
+{
+    setRunning(false);
+    setRunning(true);
+}
+
+void QDeclarativeTimer::update()
+{
+    Q_D(QDeclarativeTimer);
+    if (d->classBegun && !d->componentComplete)
+        return;
+    d->pause.stop();
+    if (d->running) {
+        d->pause.setCurrentTime(0);
+        d->pause.setLoopCount(d->repeating ? -1 : 1);
+        d->pause.setDuration(d->interval);
+        d->pause.start();
+        if (d->triggeredOnStart && d->firstTick) {
+            QCoreApplication::removePostedEvents(this, QEvent::MetaCall);
+            QMetaObject::invokeMethod(this, "ticked", Qt::QueuedConnection);
+        }
+    }
+}
+
+void QDeclarativeTimer::classBegin()
+{
+    Q_D(QDeclarativeTimer);
+    d->classBegun = true;
+}
+
+void QDeclarativeTimer::componentComplete()
+{
+    Q_D(QDeclarativeTimer);
+    d->componentComplete = true;
+    update();
+}
+
+/*!
+    \qmlsignal QtQuick2::Timer::onTriggered()
+
+    This handler is called when the Timer is triggered.
+*/
+void QDeclarativeTimer::ticked()
+{
+    Q_D(QDeclarativeTimer);
+    if (d->running && (d->pause.currentTime() > 0 || (d->triggeredOnStart && d->firstTick)))
+        emit triggered();
+    d->firstTick = false;
+}
+
+void QDeclarativeTimer::finished()
+{
+    Q_D(QDeclarativeTimer);
+    if (d->repeating || !d->running)
+        return;
+    emit triggered();
+    d->running = false;
+    d->firstTick = false;
+    emit runningChanged();
+}
+
+QT_END_NAMESPACE