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import Qt 4.7
import Effects 1.0

/* Vars exposed from C++
   pixmap bgAppPixmap
   bool useBlur (to turn on, pass -use-blur on the cmd line. Off by default 'cause it's too slow)
*/
Item {
    id: main
    //height and width set by program to fill window
    //below properties are sometimes set from C++
    property url qmlFile: ''
    property bool show: false
    Image{
        id: bg
        opacity: 0
        anchors.fill: parent
        z: -1
        pixmap: bgAppPixmap
        effect: Blur { id: blurEffect; enabled: useBlur; blurRadius: 8;}
    }

    Item{ id:embeddedViewer
        width: parent.width
        height: parent.height
        opacity: 0;
        z: 10
        Loader{
            id: loader
            z: 10
            focus: true //Automatic FocusScope
            clip: true
            source: qmlFile
            anchors.centerIn: parent
            onStatusChanged: if(status == Loader.Ready) {
                if(loader.item.width > 640)
                    loader.item.width = 640;
                if(loader.item.height > 480)
                    loader.item.height = 480;
            }

        }
        Rectangle{ id: frame
            z: 9
            anchors.fill: loader.status == Loader.Ready ? loader : errorTxt
            anchors.margins: -8
            radius: 4
            smooth: true
            border.color: "#88aaaaaa"
            gradient: Gradient{
                GradientStop{ position: 0.0; color: "#14FFFFFF" }
                GradientStop{ position: 1.0; color: "#5AFFFFFF" }
            }
            MouseArea{
                anchors.fill: parent
                onClicked: loader.focus=true;/* and don't propogate to the 'exit' area*/
            }

            Rectangle{ id: innerFrame
                anchors.margins: 7
                anchors.bottomMargin: 8
                anchors.rightMargin: 8
                color: "black"
                border.color: "#44000000"
                anchors.fill:parent
            }

            effect: DropShadow  {
                enabled: useBlur;
                blurRadius: 9;
                color: "#88000000";
                xOffset:0
                yOffset:0
            }
        }

        Text{
            id: errorTxt
            z: 10
            anchors.centerIn: parent
            color: 'white'
            smooth: true
            visible: loader.status == Loader.Error
            textFormat: Text.RichText
            //Note that if loader is Error, it is because the file was found but there was an error creating the component
            //This means either we have a bug in our demos, or the required modules (which ship with Qt) did not deploy correctly
            text: "The example has failed to load.<br />If you installed Qt's QML modules this is a bug!<br />"
                + 'Report it at <a href="http://bugreports.qt.nokia.com">http://bugreports.qt.nokia.com</a>';
            onLinkActivated: Qt.openUrlExternally(link);
        }
    }
    Rectangle{ id: blackout //Maybe use a colorize effect instead?
        z: 8
        anchors.fill: parent
        color: "#000000"
        opacity: 0
    }
    MouseArea{
        z: 8
        enabled: main.show
        hoverEnabled: true //To steal focus from the buttons
        anchors.fill: parent
        onClicked: main.show=false;
    }

    states: [
        State {
            name: "show"
            when: show == true
            PropertyChanges {
                target: embeddedViewer
                opacity: 1
            }
            PropertyChanges {
                target: bg
                opacity: 1
            }
            PropertyChanges {
                target: blackout
                opacity: 0.5
            }
        }
    ]
    transitions: [//Should not be too long, because the component has already started running
        Transition { from: ''; to: "show"; reversible: true
            SequentialAnimation{
                PropertyAction { target: bg; property: useBlur?"y":"opacity";}//fade in blurred background only if blurred
                NumberAnimation{ properties: "opacity"; easing.type: Easing.InQuad; duration: 500}
                PropertyAction { target: loader; property: "focus"; value: true}//Might be needed to ensure the focus stays with us
            }
        }
    ]
}