--- /dev/null
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the documentation of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+** * Redistributions of source code must retain the above copyright
+** notice, this list of conditions and the following disclaimer.
+** * Redistributions in binary form must reproduce the above copyright
+** notice, this list of conditions and the following disclaimer in
+** the documentation and/or other materials provided with the
+** distribution.
+** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
+** the names of its contributors may be used to endorse or promote
+** products derived from this software without specific prior written
+** permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+//![0]
+import QtQuick 2.0
+
+Rectangle {
+ width: 400
+ height: 400
+
+ PathInterpolator {
+ id: motionPath
+
+ path: Path {
+ startX: 0; startY: 0
+
+ PathCubic {
+ x: 350; y: 350
+
+ control1X: 350; control1Y: 0
+ control2X: 0; control2Y: 350
+ }
+ }
+
+ NumberAnimation on progress { from: 0; to: 1; duration: 2000 }
+ }
+
+ Rectangle {
+ width: 50; height: 50
+ color: "green"
+
+ //bind our attributes to follow the path as progress changes
+ x: motionPath.x
+ y: motionPath.y
+ rotation: motionPath.angle
+ }
+}
+//![0]
--- /dev/null
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+** * Redistributions of source code must retain the above copyright
+** notice, this list of conditions and the following disclaimer.
+** * Redistributions in binary form must reproduce the above copyright
+** notice, this list of conditions and the following disclaimer in
+** the documentation and/or other materials provided with the
+** distribution.
+** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
+** the names of its contributors may be used to endorse or promote
+** products derived from this software without specific prior written
+** permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+import QtQuick 2.0
+
+Rectangle {
+ id: window
+ width: 400
+ height: 400
+
+ Canvas {
+ id: canvas
+ anchors.fill: parent
+ smooth: true
+
+ onPaint: {
+ context.strokeStyle = "black"
+ context.path = motionPath.path
+ context.stroke()
+ }
+ }
+
+ PathInterpolator {
+ id: motionPath
+
+ path: Path {
+ startX: 50; startY: 50
+
+ PathCubic {
+ x: window.width - 50
+ y: window.height - 50
+
+ control1X: x; control1Y: 50
+ control2X: 50; control2Y: y
+ }
+
+ onChanged: canvas.requestPaint()
+ }
+
+ NumberAnimation on progress {
+ id: progressAnim
+ running: false
+ from: 0; to: 1
+ duration: 2000
+ easing.type: Easing.InQuad
+ }
+ }
+
+ Rectangle {
+ id: box
+
+ width: 50; height: 50
+ border.width: 1
+ smooth: true
+
+ //bind our attributes to follow the path as progress changes
+ x: motionPath.x
+ y: motionPath.y
+ rotation: motionPath.angle
+ transform: Translate { x: -box.width/2; y: -box.height/2 }
+
+ Text {
+ anchors.centerIn: parent
+ text: "Box"
+ }
+ }
+
+ MouseArea {
+ anchors.fill: parent
+ onClicked: progressAnim.restart()
+ }
+
+ Text {
+ text: "Click anywhere to animate along the path"
+ anchors.horizontalCenter: parent.horizontalCenter
+ }
+}
QT_BEGIN_NAMESPACE
+/*!
+ \qmlclass PathInterpolator QQuickPathInterpolator
+ \inqmlmodule QtQuick 2
+ \brief The PathInterpolator element provides a way to manually animate along a path.
+
+ PathInterpolator provides \c x, \c y, and \c angle information for a particular \c progress
+ along a path.
+
+ In the following example, we animate a green rectangle along a bezier path.
+
+ \snippet doc/src/snippets/declarative/pathinterpolator.qml 0
+*/
+
QDeclarativePathInterpolator::QDeclarativePathInterpolator(QObject *parent) :
QObject(parent), _path(0), _x(0), _y(0), _angle(0), _progress(0)
{
}
+/*!
+ \qmlproperty Path QtQuick2::PathInterpolator::path
+ This property holds the path to interpolate.
+
+ For more information on defining a path see the \l Path documentation.
+*/
QDeclarativePath *QDeclarativePathInterpolator::path() const
{
return _path;
emit pathChanged();
}
+/*!
+ \qmlproperty real QtQuick2::PathInterpolator::progress
+ This property holds the current progress along the path.
+
+ Typical usage of PathInterpolator is to set the progress
+ (often via a NumberAnimation), and read the corresponding
+ values for x, y, and angle (often via bindings to these values).
+
+ Progress ranges from 0.0 to 1.0.
+*/
qreal QDeclarativePathInterpolator::progress() const
{
return _progress;
_q_pathUpdated();
}
+/*!
+ \qmlproperty real QtQuick2::PathInterpolator::x
+ \qmlproperty real QtQuick2::PathInterpolator::y
+
+ These properties hold the position of the path at \l progress.
+*/
qreal QDeclarativePathInterpolator::x() const
{
return _x;
return _y;
}
+/*!
+ \qmlproperty real QtQuick2::PathInterpolator::angle
+
+ This property holds the angle of the path tangent at \l progress.
+
+ Angles are reported clockwise, with zero degrees at the 3 o'clock position.
+*/
qreal QDeclarativePathInterpolator::angle() const
{
return _angle;
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