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import Qt 4.7

import Qt.labs.particles 1.0

import "qml"

Item {

    id: window

    property int activeSuns: 0

    //This is a desktop-sized example

    width: 800; height: 480

    //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 }

        }

    }

    // sky

    Rectangle {

        id: sky

        anchors { left: parent.left; top: parent.top; right: toolbox.right; 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)

    Particles {

        id: stars

        x: 0; y: 0; width: parent.width; height: parent.height / 2

        source: "images/star.png"

        angleDeviation: 360

        velocity: 0; velocityDeviation: 0

        count: parent.width / 10

        fadeInDuration: 2800

        opacity: 1

    }

    // 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; right: toolbox.left; bottom: parent.bottom }

        gradient: Gradient {

            GradientStop { position: 0.0; color: "ForestGreen" }

            GradientStop { position: 1.0; color: "DarkGreen" }

        }

    }

    SystemPalette { id: activePalette }

    // right-hand panel

    Rectangle {

        id: toolbox

        width: 380

        color: activePalette.window

        anchors { right: parent.right; top: parent.top; bottom: parent.bottom }

        Column {

            anchors.centerIn: parent

            spacing: 8

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

            Rectangle {

                width: childrenRect.width + 10; height: childrenRect.height + 10

                border.color: "black"

                Row {

                    anchors.centerIn: parent

                    spacing: 8

                    PaletteItem {

                        anchors.verticalCenter: parent.verticalCenter

                        componentFile: "Sun.qml"

                        image: "../images/sun.png"

                    }

                    PaletteItem {

                        anchors.verticalCenter: parent.verticalCenter

                        componentFile: "GenericSceneItem.qml"

                        image: "../images/moon.png"

                    }

                    PaletteItem {

                        anchors.verticalCenter: parent.verticalCenter

                        componentFile: "PerspectiveItem.qml"

                        image: "../images/tree_s.png"

                    }

                    PaletteItem {

                        anchors.verticalCenter: parent.verticalCenter

                        componentFile: "PerspectiveItem.qml"

                        image: "../images/rabbit_brown.png"

                    }

                    PaletteItem {

                        anchors.verticalCenter: parent.verticalCenter

                        componentFile: "PerspectiveItem.qml"

                        image: "../images/rabbit_bw.png"

                    }

                }

            }

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

            Rectangle { width: parent.width; height: 1; color: "black" }

            Text { text: "Arbitrary QML:" }

            Rectangle {

                width: 360; height: 240

                TextEdit {

                    id: qmlText

                    anchors.fill: parent; anchors.margins: 5

                    readOnly: false

                    focusOnPress: true

                    font.pixelSize: 14

                    wrapMode: TextEdit.WordWrap

                    text: "import Qt 4.7\nImage {\n    id: smile\n    x: 360 * Math.random()\n    y: 180 * Math.random() \n    source: 'images/face-smile.png'\n    NumberAnimation on opacity { \n        to: 0; duration: 1500\n    }\n    Component.onCompleted: smile.destroy(1500);\n}"

                }

            }

            Button {

                text: "Create"

                onClicked: {

                    try { 

                        Qt.createQmlObject(qmlText.text, window, 'CustomObject');

                    } catch(err) {

                        dialog.show('Error on line ' + err.qmlErrors[0].lineNumber + '\n' + err.qmlErrors[0].message);

                    }

                }

            }

        }

    }

    //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 }

    }

}