dynamicscene.qml Example File

dynamicscene/dynamicscene.qml
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 import QtQuick 2.0
 import QtQuick.Particles 2.0
 import "content"

 Item {
     id: window

     property int activeSuns: 0
     property int centerOffset: 72

     height: 480; width: 320

     MouseArea {
         anchors.fill: parent
         onClicked: window.focus = false;
     }

     //This is the message box that pops up when there's an error
     Rectangle {
         id: dialog

         opacity: 0
         anchors.centerIn: parent
         width: dialogText.width + 6; height: dialogText.height + 6
         border.color: 'black'
         color: 'lightsteelblue'
         z: 65535 //Arbitrary number chosen to be above all the items, including the scaled perspective ones.

         function show(str){
             dialogText.text = str;
             dialogAnim.start();
         }

         Text {
             id: dialogText
             x: 3; y: 3
             font.pixelSize: 14
         }

         SequentialAnimation {
             id: dialogAnim
             NumberAnimation { target: dialog; property:"opacity"; to: 1; duration: 1000 }
             PauseAnimation { duration: 5000 }
             NumberAnimation { target: dialog; property:"opacity"; to: 0; duration: 1000 }
         }
     }

     Item {
         id: scene
         anchors { top: sky.top; bottom: ground.bottom; left: parent.left; right: parent.right}
         z: 10
     }

    // sky
     Rectangle {
         id: sky
         anchors { left: parent.left; top: toolbox.bottom; right: parent.right;  bottomMargin: -window.centerOffset; bottom: parent.verticalCenter }
         gradient: Gradient {
             GradientStop { id: gradientStopA; position: 0.0; color: "#0E1533" }
             GradientStop { id: gradientStopB; position: 1.0; color: "#437284" }
         }
     }

     // stars (when there's no sun)
     ParticleSystem {
         id: particlesystem
         anchors.fill: sky

         ImageParticle {
             id: stars
             source: "content/images/star.png"
             groups: ["stars"]
             opacity: .5
         }

         Emitter {
             id: starsemitter
             anchors.fill: parent
             emitRate: parent.width / 50
             lifeSpan: 5000
             group: "stars"
         }
     }

     // ground
     Rectangle {
         id: ground
         z: 2    // just above the sun so that the sun can set behind it
         anchors { left: parent.left; top: parent.verticalCenter; topMargin: window.centerOffset; right: parent.right; bottom: parent.bottom }
         gradient: Gradient {
             GradientStop { position: 0.0; color: "ForestGreen" }
             GradientStop { position: 1.0; color: "DarkGreen" }
         }
     }

     // top panel
     Rectangle {
         id: toolbox

         height: window.centerOffset * 2
         color: "white"
         anchors { right: parent.right; top: parent.top; left: parent.left}

         Column {
             anchors.centerIn: parent
             spacing: 8

             Text { text: "Drag an item into the scene." }

             Rectangle {
                 width: palette.width + 10; height: palette.height + 10
                 border.color: "black"

                 Row {
                     id: palette
                     anchors.centerIn: parent
                     spacing: 8

                     PaletteItem {
                         anchors.verticalCenter: parent.verticalCenter
                         componentFile: "Sun.qml"
                         source: "content/images/sun.png"
                         image: "images/sun.png"
                     }
                     PaletteItem {
                         anchors.verticalCenter: parent.verticalCenter
                         componentFile: "GenericSceneItem.qml"
                         source: "content/images/moon.png"
                         image: "images/moon.png"
                     }
                     PaletteItem {
                         anchors.verticalCenter: parent.verticalCenter
                         componentFile: "PerspectiveItem.qml"
                         source: "content/images/tree_s.png"
                         image: "images/tree_s.png"
                     }
                     PaletteItem {
                         anchors.verticalCenter: parent.verticalCenter
                         componentFile: "PerspectiveItem.qml"
                         source: "content/images/rabbit_brown.png"
                         image: "images/rabbit_brown.png"
                     }
                     PaletteItem {
                         anchors.verticalCenter: parent.verticalCenter
                         componentFile: "PerspectiveItem.qml"
                         source: "content/images/rabbit_bw.png"
                         image: "images/rabbit_bw.png"
                     }
                 }
             }

             Text { text: "Active Suns: " + window.activeSuns }
         }
     }

     //Popup toolbox down the bottom
     Rectangle {
         id: popupToolbox
         z: 1000
         width: parent.width
         height: popupColumn.height + 16
         color: "white"

         property bool poppedUp: false
         property int downY: window.height - (createButton.height + 16)
         property int upY: window.height - (popupColumn.height + 16)
         y: poppedUp ? upY : downY
         Behavior on y { NumberAnimation {}}

         Column {
             id: popupColumn
             y: 8
             spacing: 8

             Row {
                 height: createButton.height
                 spacing: 8
                 Text { text: "Custom QML:"; anchors.verticalCenter: parent.verticalCenter }
                 Button {
                     id: popupButton
                     text: popupToolbox.poppedUp ? "Hide" : "Show"
                     onClicked: popupToolbox.poppedUp = !popupToolbox.poppedUp
                 }
                 Button {
                     id: createButton
                     text: "Create"
                     onClicked: {
                         try {
                             Qt.createQmlObject(qmlText.text, scene, 'CustomObject');
                         } catch(err) {
                             dialog.show('Error on line ' + err.qmlErrors[0].lineNumber + '\n' + err.qmlErrors[0].message);
                         }
                     }
                 }

             }

             Rectangle {
                 width: 360; height: 240

                 TextEdit {
                     id: qmlText
                     anchors.fill: parent; anchors.margins: 5
                     readOnly: false
                     font.pixelSize: 14
                     selectByMouse: true
                     wrapMode: TextEdit.WordWrap

                     text: "import QtQuick 2.0\nImage {\n    id: smile\n    x: 360 * Math.random()\n    y: 40 * Math.random() \n    source: 'content/images/face-smile.png'\n    NumberAnimation on opacity { \n        to: 0; duration: 1500\n    }\n    Component.onCompleted: smile.destroy(1500);\n}"
                 }
             }
         }
     }

     //Day state, for when a sun is added to the scene
     states: State {
         name: "Day"
         when: window.activeSuns > 0

         PropertyChanges { target: gradientStopA; color: "DeepSkyBlue" }
         PropertyChanges { target: gradientStopB; color: "SkyBlue" }
         PropertyChanges { target: stars; opacity: 0 }
     }

     transitions: Transition {
         PropertyAnimation { duration: 3000 }
         ColorAnimation { duration: 3000 }
     }
 }