aboutsummaryrefslogtreecommitdiffstats
path: root/src/quick/particles/qquickage.cpp
diff options
context:
space:
mode:
authorKent Hansen <kent.hansen@nokia.com>2011-11-23 15:14:07 +0100
committerQt by Nokia <qt-info@nokia.com>2011-12-02 14:18:20 +0100
commit6c8378eaf1edbbefe6aaa3672b0127816a004fd7 (patch)
tree8ee08fb447e052f7a7a685fbeaaa04f04ea60126 /src/quick/particles/qquickage.cpp
parente01219b77b1e889e70437635905d7ff820568e23 (diff)
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>
Diffstat (limited to 'src/quick/particles/qquickage.cpp')
-rw-r--r--src/quick/particles/qquickage.cpp112
1 files changed, 112 insertions, 0 deletions
diff --git a/src/quick/particles/qquickage.cpp b/src/quick/particles/qquickage.cpp
new file mode 100644
index 0000000000..a71b9e2088
--- /dev/null
+++ b/src/quick/particles/qquickage.cpp
@@ -0,0 +1,112 @@
+/****************************************************************************
+**
+** 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 Declarative 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 "qquickage_p.h"
+#include "qquickparticleemitter_p.h"
+QT_BEGIN_NAMESPACE
+/*!
+ \qmlclass Age QQuickAgeAffector
+ \inqmlmodule QtQuick.Particles 2
+ \inherits Affector
+ \brief The Age affector allows you to prematurely age particles
+
+ The Age affector allows you to alter where the particle is in its lifecycle. Common uses
+ are to expire particles prematurely, possibly giving them time to animate out.
+
+ The Age affector only applies to particles which are still alive.
+*/
+/*!
+ \qmlproperty int QtQuick.Particles2::Age::lifeLeft
+
+ The amount of life to set the particle to have. Affected particles
+ will advance to a point in their life where they will have this many
+ milliseconds left to live.
+*/
+
+/*!
+ \qmlproperty bool QtQuick.Particles2::Age::advancePosition
+
+ advancePosition determines whether position, veclocity and acceleration are included in
+ the simulated aging done by the affector. If advancePosition is false,
+ then the position, velocity and acceleration will remain the same and only
+ other attributes (such as opacity) will advance in the simulation to where
+ it would normally be for that point in the particle's life. With advancePosition set to
+ true the position, velocity and acceleration will also advance to where it would
+ normally be by that point in the particle's life, making it advance its position
+ on screen.
+
+ Default value is true.
+*/
+
+QQuickAgeAffector::QQuickAgeAffector(QQuickItem *parent) :
+ QQuickParticleAffector(parent), m_lifeLeft(0), m_advancePosition(true)
+{
+}
+
+
+bool QQuickAgeAffector::affectParticle(QQuickParticleData *d, qreal dt)
+{
+ Q_UNUSED(dt);
+ if (d->stillAlive()){
+ qreal curT = (qreal)m_system->timeInt/1000.0;
+ qreal ttl = (qreal)m_lifeLeft/1000.0;
+ if (!m_advancePosition && ttl > 0){
+ qreal x = d->curX();
+ qreal vx = d->curVX();
+ qreal ax = d->curAX();
+ qreal y = d->curY();
+ qreal vy = d->curVY();
+ qreal ay = d->curAY();
+ d->t = curT - (d->lifeSpan - ttl);
+ d->setInstantaneousX(x);
+ d->setInstantaneousVX(vx);
+ d->setInstantaneousAX(ax);
+ d->setInstantaneousY(y);
+ d->setInstantaneousVY(vy);
+ d->setInstantaneousAY(ay);
+ } else {
+ d->t = curT - (d->lifeSpan - ttl);
+ }
+ return true;
+ }
+ return false;
+}
+QT_END_NAMESPACE