Start of examples refactor

This is the general reorg of the examples directory structure, plus additional
guidelines.

calculator, animations and accessibility have been updated to the new standards
and tested, as an example.

Task-number: QTBUG-24133
Change-Id: I76c3b86751d3195ba2a5474ff23afb875765e9a4
Reviewed-by: Alan Alpert <alan.alpert@nokia.com>

8 files changed, 819 insertions, 0 deletions

diff --git a/examples/particles/itemparticle/content/Delegate.qml b/examples/particles/itemparticle/content/Delegate.qml
new file mode 100644
index 0000000000..97c7840cb4
--- /dev/null
+++ b/examples/particles/itemparticle/content/Delegate.qml
@@ -0,0 +1,88 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** 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
+
+//![0]
+Package {
+    Text { id: listDelegate; width: 200; height: 25; text: 'Empty'; Package.name: 'list' }
+    Text { id: gridDelegate; width: 100; height: 50; text: 'Empty'; Package.name: 'grid' }
+
+    Rectangle {
+        id: wrapper
+        width: 200; height: 25
+        color: 'lightsteelblue'
+
+        Text { text: display; anchors.centerIn: parent }
+        MouseArea {
+            anchors.fill: parent
+            onClicked: {
+                if (wrapper.state == 'inList')
+                    wrapper.state = 'inGrid';
+                else
+                    wrapper.state = 'inList';
+            }
+        }
+
+        state: 'inList'
+        states: [
+            State {
+                name: 'inList'
+                ParentChange { target: wrapper; parent: listDelegate }
+            },
+            State {
+                name: 'inGrid'
+                ParentChange {
+                    target: wrapper; parent: gridDelegate
+                    x: 0; y: 0; width: gridDelegate.width; height: gridDelegate.height
+                }
+            }
+        ]
+
+        transitions: [
+            Transition {
+                ParentAnimation {
+                    NumberAnimation { properties: 'x,y,width,height'; duration: 300 }
+                }
+            }
+        ]
+    }
+}
+//![0]
diff --git a/examples/particles/itemparticle/content/Delegate2.qml b/examples/particles/itemparticle/content/Delegate2.qml
new file mode 100644
index 0000000000..cf60d43dc2
--- /dev/null
+++ b/examples/particles/itemparticle/content/Delegate2.qml
@@ -0,0 +1,79 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** 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
+
+//![0]
+Package {
+    Item { id: gridDelegate; width: w; height: h; Package.name: 'grid' }
+    Item { id: particleDelegate; width: w; height: h; Package.name: 'particles' 
+
+        Rectangle {
+            id: wrapper
+            width: w; height: h;
+            color: col
+            rotation: Math.random()*360
+            Behavior on rotation {RotationAnimation {}}
+
+            states: State {
+                name: "gridded"
+                when: root.inGrid
+                PropertyChanges {
+                    target: wrapper
+                    rotation: 0
+                }
+                ParentChange {
+                    target: wrapper
+                    parent: gridDelegate
+                    x:0
+                    y:0
+                }
+            }
+            transitions: [
+                Transition {
+                    ParentAnimation {
+                        NumberAnimation { properties: 'x,y,width,height'; duration: 300 }
+                    }
+                }
+            ]
+        }
+    }
+}
+//![0]
diff --git a/examples/particles/itemparticle/content/ExpandingDelegate.qml b/examples/particles/itemparticle/content/ExpandingDelegate.qml
new file mode 100644
index 0000000000..87f723d3f7
--- /dev/null
+++ b/examples/particles/itemparticle/content/ExpandingDelegate.qml
@@ -0,0 +1,204 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** 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
+import "../../../modelviews/listview/content"
+
+// This example illustrates expanding a list item to show a more detailed view.
+
+    // Delegate for the recipes.  This delegate has two modes:
+    // 1. List mode (default), which just shows the picture and title of the recipe.
+    // 2. Details mode, which also shows the ingredients and method.
+    Component {
+        id: recipeDelegate
+
+        Item {
+            id: recipe
+
+            // Create a property to contain the visibility of the details.
+            // We can bind multiple element's opacity to this one property,
+            // rather than having a "PropertyChanges" line for each element we
+            // want to fade.
+            property real detailsOpacity : 0
+
+            //this bit changed for aesthetics
+            width: 70
+            height: 70
+            // A simple rounded rectangle for the background
+            Rectangle {
+                id: background
+                x: 2; y: 2; width: parent.width - x*2; height: parent.height - y*2
+                color: "ivory"
+                border.color: "orange"
+                radius: 5
+            }
+            Image {
+                anchors.fill:parent
+                anchors.margins: -32
+                source: "bubble.png"
+            }
+
+
+            // This mouse region covers the entire delegate.
+            // When clicked it changes mode to 'Details'.  If we are already
+            // in Details mode, then no change will happen.
+            MouseArea {
+                anchors.fill: parent
+                onClicked: recipe.state = 'Details';
+            }
+
+            // Lay out the page: picture, title and ingredients at the top, and method at the
+            // bottom.  Note that elements that should not be visible in the list
+            // mode have their opacity set to recipe.detailsOpacity.
+            Row {
+                id: topLayout
+                x: 10; y: 10; height: recipeImage.height; width: parent.width
+                spacing: 10
+
+                Image {
+                    id: recipeImage
+                    width: 50; height: 50
+                    source: "../../modelviews/listview/" + picture
+                }
+
+                Column {
+                    width: background.width - recipeImage.width - 20; height: recipeImage.height
+                    spacing: 5
+
+                    Text { 
+                        text: title
+                        font.bold: true; font.pointSize: 16
+                    }
+
+                    Text {
+                        text: "Ingredients"
+                        font.pointSize: 12; font.bold: true
+                        opacity: recipe.detailsOpacity
+                    }
+
+                    Text {
+                        text: ingredients
+                        wrapMode: Text.WordWrap
+                        width: parent.width
+                        opacity: recipe.detailsOpacity
+                    }
+                }
+            }
+
+            Item {
+                id: details
+                x: 10; width: parent.width - 20
+                anchors { top: topLayout.bottom; topMargin: 10; bottom: parent.bottom; bottomMargin: 10 }
+                opacity: recipe.detailsOpacity
+
+                Text {
+                    id: methodTitle
+                    anchors.top: parent.top
+                    text: "Method"
+                    font.pointSize: 12; font.bold: true
+                }
+
+                Flickable {
+                    id: flick
+                    width: parent.width
+                    anchors { top: methodTitle.bottom; bottom: parent.bottom }
+                    contentHeight: methodText.height
+                    clip: true
+
+                    Text { id: methodText; text: method; wrapMode: Text.WordWrap; width: details.width }
+                }
+
+                Image {
+                    anchors { right: flick.right; top: flick.top }
+                    source: "../../modelviews/listview/" + "content/pics/moreUp.png"
+                    opacity: flick.atYBeginning ? 0 : 1
+                }
+
+                Image {
+                    anchors { right: flick.right; bottom: flick.bottom }
+                    source: "../../modelviews/listview/" + "content/pics/moreDown.png"
+                    opacity: flick.atYEnd ? 0 : 1
+                }
+            }
+
+            // A button to close the detailed view, i.e. set the state back to default ('').
+            TextButton {
+                y: 10
+                anchors { right: background.right; rightMargin: 10 }
+                opacity: recipe.detailsOpacity
+                text: "Close"
+
+                onClicked: recipe.state = '';
+            }
+
+            states: State {
+                name: "Details"
+
+                PropertyChanges { target: background; color: "white" }
+                PropertyChanges { target: recipeImage; width: 130; height: 130 } // Make picture bigger
+                PropertyChanges { target: recipe; detailsOpacity: 1; x: 0; opacity: 1 } // Make details visible
+                PropertyChanges { target: recipe; height: root.height; width: root.height; x:0; y:0; z:100} // Fill the entire list area with the detailed view
+
+                // Move the list so that this item is at the top.
+                //PropertyChanges { target: recipe.ListView.view; explicit: true; contentY: recipe.y }
+
+                // Disallow flicking while we're in detailed view
+                //PropertyChanges { target: recipe.ListView.view; interactive: false }
+            }
+
+            transitions: Transition {
+                //The only strictly necessary particle specific lines 
+                to: "Details"
+                reversible: true
+                ScriptAction {script: {
+                    if(state == "Details")
+                        mp.freeze(index);
+                    else
+                        mp.unfreeze(index);
+                    }
+                }
+                // Make the state changes smooth
+                ParallelAnimation {
+                    ColorAnimation { property: "color"; duration: 500 }
+                    NumberAnimation { duration: 300; properties: "detailsOpacity,opacity,x,y,height,width" }
+                }
+            }
+        }
+    }
diff --git a/examples/particles/itemparticle/content/RssModel.qml b/examples/particles/itemparticle/content/RssModel.qml
new file mode 100644
index 0000000000..46027600b3
--- /dev/null
+++ b/examples/particles/itemparticle/content/RssModel.qml
@@ -0,0 +1,56 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** 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
+import QtQuick.XmlListModel 2.0
+
+XmlListModel {
+    property string tags : ""
+
+    function encodeTags(x) { return encodeURIComponent(x.replace(' ',',')); }
+
+    source: "http://api.flickr.com/services/feeds/photos_public.gne?"+(tags ? "tags="+encodeTags(tags)+"&" : "")
+    query: "/feed/entry"
+    namespaceDeclarations: "declare default element namespace 'http://www.w3.org/2005/Atom';"
+
+    XmlRole { name: "title"; query: "title/string()" }
+    XmlRole { name: "content"; query: "content/string()" }
+    XmlRole { name: "hq"; query: "link[@rel='enclosure']/@href/string()" }
+}
diff --git a/examples/particles/itemparticle/content/bubble.png b/examples/particles/itemparticle/content/bubble.png
new file mode 100644
index 0000000000..c7f479e9e3
--- /dev/null
+++ b/examples/particles/itemparticle/content/bubble.png
diff --git a/examples/particles/itemparticle/content/script.js b/examples/particles/itemparticle/content/script.js
new file mode 100644
index 0000000000..e8ef93a847
--- /dev/null
+++ b/examples/particles/itemparticle/content/script.js
@@ -0,0 +1,27 @@
+.pragma library
+
+function getWidth(string) {
+    return (string.match(/width=\"([0-9]+)\"/))[1]
+}
+
+function getHeight(string) {
+    return (string.match(/height=\"([0-9]+)\"/))[1]
+}
+
+function getImagePath(string) {
+    var pattern = /src=\"http:\/\/(\S+)\"/
+    return (string.match(pattern))[1]
+}
+
+function calculateScale(width, height, cellSize) {
+    var widthScale = (cellSize * 1.0) / width
+    var heightScale = (cellSize * 1.0) / height
+    var scale = 0
+
+    if (widthScale <= heightScale) {
+        scale = widthScale;
+    } else if (heightScale < widthScale) {
+        scale = heightScale;
+    }
+    return scale;
+}
diff --git a/examples/particles/itemparticle/delegates.qml b/examples/particles/itemparticle/delegates.qml
new file mode 100644
index 0000000000..58734d320a
--- /dev/null
+++ b/examples/particles/itemparticle/delegates.qml
@@ -0,0 +1,91 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** 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
+import QtQuick.Particles 2.0
+
+Rectangle {
+    id: root;
+    width: 360
+    height: 600
+    color: "black"
+
+    function newPithySaying() {
+        switch (Math.floor(Math.random()*16)) {
+            case 0: return "Hello World";
+            case 1: return "G'day Mate";
+            case 2: return "Code Less";
+            case 3: return "Create More";
+            case 4: return "Deploy Everywhere";
+            case 5: return "Qt Meta-object Language";
+            case 6: return "Qt Magic Language";
+            case 7: return "Fluid UIs";
+            case 8: return "Touchable";
+            case 9: return "How's it going?";
+            case 10: return "Do you like text?";
+            case 11: return "Enjoy!";
+            case 12: return "ERROR: Out of pith";
+            case 13: return "Punctuation Failure";
+            case 14: return "I can go faster";
+            case 15: return "I can go slower";
+            default: return "OMGWTFBBQ";
+        }
+    }
+
+    ParticleSystem {
+        anchors.fill: parent
+        id: syssy
+        Emitter {
+            anchors.centerIn: parent
+            emitRate: 1
+            lifeSpan: 4800
+            lifeSpanVariation: 1600
+            speed: AngleDirection {angleVariation: 360; magnitude: 40; magnitudeVariation: 20}
+        }
+        ItemParticle {
+            delegate: Text {
+                text: root.newPithySaying();
+                color: "white"
+                font.pixelSize: 18
+                font.bold: true
+            }
+        }
+    }
+}
diff --git a/examples/particles/itemparticle/particleview.qml b/examples/particles/itemparticle/particleview.qml
new file mode 100644
index 0000000000..774539a958
--- /dev/null
+++ b/examples/particles/itemparticle/particleview.qml
@@ -0,0 +1,274 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** 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
+import QtQuick.Particles 2.0
+import "content/script.js" as Script
+import "content"
+
+Item {
+    id: root
+    width: 640
+    height: 480
+    Rectangle {
+        anchors.fill: parent
+        color: "black"
+        z: -1
+    }
+    Item {
+        id: loading
+        Behavior on opacity {NumberAnimation {}}
+        anchors.fill: parent
+        Text {
+            anchors.centerIn: parent
+            text: "Loading"
+            color: "white"
+        }
+    }
+    ParticleSystem {
+        id: sys;
+        running: true
+    }
+    Emitter {
+        id: emitter
+        system: sys
+        height: parent.height - 132/2
+        x: -132/2
+        y: 132/2
+        speed: PointDirection { x: 32; xVariation: 8 }
+        emitRate: 0.5
+        lifeSpan: Emitter.InfiniteLife
+        group: "photos"
+    }
+    Age {
+        system: sys
+        x: parent.width + 132/2
+        height: parent.height
+        width: 1000
+    }
+    ImageParticle {
+        system: sys
+        groups: ["fireworks"]
+        source: "../trails/../images/star.png"
+        color: "lightsteelblue"
+        alpha: 0
+        colorVariation: 0
+        z: 1000
+    }
+    ItemParticle {
+        id: mp
+        z: 0
+        system: sys
+        fade: false
+        groups: ["photos"]
+    }
+    Component {
+        id: alertDelegate
+        Rectangle {
+            width: 132
+            height: 132
+            NumberAnimation on scale {
+                running: true
+                loops: 1
+                from: 0.2
+                to: 1
+            }
+            Image {
+                source: "../asteroid/../images/rocket.png"
+                anchors.centerIn: parent
+            }
+            Text {
+                anchors.bottom: parent.bottom
+                anchors.horizontalCenter: parent.horizontalCenter
+                text: "A new ship has arrived!"
+            }
+        }
+    }
+    property Item alertItem;
+    function alert() {
+        //resetter.active = false
+        force.active = true;
+        alertItem = alertDelegate.createObject(root);
+        alertItem.x = root.width/2 - alertItem.width/2
+        alertItem.y = root.height/2 - alertItem.height/2
+        spawnFireworks.pulse(200);
+        stopAlert.start();
+    }
+    focus: true
+    Keys.onSpacePressed: alert();
+    Timer {
+        id: stopAlert
+        running: false
+        repeat: false
+        interval: 800
+        onTriggered: {
+            force.active = false
+            //resetter.active = true;
+            mp.take(alertItem, true);
+            centerEmitter.burst(1);
+        }
+    }
+    Attractor {
+        id: force
+        system: sys
+        pointX: root.width/2
+        pointY: root.height/2
+        strength: -10000
+        enabled: false
+        anchors.centerIn: parent
+        width: parent.width/2
+        height: parent.height/2
+        groups:["photos"]
+        affectedParameter: Attractor.Position
+    }
+    Emitter {
+        id: centerEmitter
+        speed: PointDirection { x: 32; xVariation: 8;}
+        emitRate: 0.5
+        lifeSpan: 12000 //TODO: A -1 or something which does 'infinite'? (but need disable fade first)
+        maximumEmitted: 20
+        group: "photos"
+        system: sys
+        anchors.centerIn: parent
+        enabled: false
+
+        //TODO: Zoom in effect
+    }
+    Emitter {
+        id: spawnFireworks
+        group: "fireworks"
+        system: sys
+        maximumEmitted: 400
+        emitRate: 400
+        lifeSpan: 2800
+        x: parent.width/2
+        y: parent.height/2 - 64
+        width: 8
+        height: 8
+        enabled: false
+        size: 32
+        endSize: 8
+        speed: AngleDirection { magnitude: 160; magnitudeVariation: 120; angleVariation: 90; angle: 270 }
+        acceleration: PointDirection { y: 160 }
+    }
+    Item { x: -1000; y: -1000 //offscreen
+        Repeater {//Load them here, add to system on completed
+            model: theModel
+            delegate: theDelegate
+        }
+    }
+    RssModel {id: theModel; tags:"particle,particles"}
+    Component {
+        id: theDelegate
+        Rectangle {
+            id: container
+            border.width: 2
+            property real myRand: Math.random();//'depth'
+            z: Math.floor(myRand * 100)
+            scale: (myRand + 1.0)/2;
+            //TODO: Darken based on 'depth'
+            width: 132
+            height: 132
+            //ItemParticle.onAttached: console.log("I'm in"  + x + "," + y + ":" + opacity);
+            ItemParticle.onDetached: mp.take(container);//respawns
+            function manage()
+            {
+                if (state == "selected") {
+                    console.log("Taking " + index);
+                    mp.freeze(container);
+                } else {
+                    console.log("Returning " +index);
+                    mp.unfreeze(container);
+                }
+            }
+            Image {
+                id: img
+                anchors.centerIn: parent
+                smooth: true; source: "http://" + Script.getImagePath(content); cache: true
+                fillMode: Image.PreserveAspectFit; 
+                width: parent.width-4; height: parent.height-4
+                onStatusChanged: if (img.status == Image.Ready) {
+                    loading.opacity = 0;
+                    mp.take(container);
+                }
+            }
+            Text {
+                anchors.bottom: parent.bottom
+                width: parent.width
+                horizontalAlignment: Text.AlignHCenter
+                elide: Text.ElideRight
+                text: title
+                color: "black"
+            }
+            MouseArea {
+                anchors.fill: parent
+                onClicked: container.state == "selected" ? container.state = "" : container.state = "selected"
+            }
+            states: State {
+                name: "selected"
+                ParentChange {
+                    target: container
+                    parent: root
+                    x: 0
+                    y: 0
+                }
+                PropertyChanges {
+                    target: container
+                    width: root.width
+                    height: root.height
+                    z: 101
+                    opacity: 1
+                    rotation: 0
+                }
+            }
+            transitions: Transition {
+                to: "selected"
+                reversible: true
+                SequentialAnimation {
+                    ScriptAction {script: container.manage();}
+                    ParallelAnimation {
+                        ParentAnimation {NumberAnimation { properties: "x,y" }}//Doesn't work, particles takes control of x,y instantly
+                        NumberAnimation { properties: "width, height, z, rotation" }
+                    }
+                }
+            }
+        }
+    }
+}