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import QtQuick 2.15
import QtQuick.Window 2.14
//! [extra import]
import QtGraphicalEffects 1.14
//! [extra import]

Window {
    visible: true
    width: 1280
    height: 720
    title: qsTr("Blend Modes Example")
    color: "#6b7080"

    Item {
        id: controlArea
        anchors.top: parent.top
        anchors.bottom: parent.bottom
        anchors.left: parent.left
        anchors.margins: 20
        width: 160

        ListView {
            id: modeList
            anchors.fill: parent
            model: modeModel
            delegate: Item {
                height: 26
                width: 140
                Text {
                    anchors.fill: parent
                    anchors.leftMargin: 10
                    anchors.rightMargin: 10
                    text: mode
                    font.pixelSize: 20
                }
                MouseArea {
                    anchors.fill: parent
                    onClicked: modeList.currentIndex = index;
                }
            }
            highlight: Rectangle {
                color: "#53586b"
                radius: 4
            }
            focus: true
        }
    }

    ListModel {
        id: modeModel
        ListElement {
            mode: "normal"
        }
        ListElement {
            mode: "addition"
        }
        ListElement {
            mode: "average"
        }
        ListElement {
            mode: "color"
        }
        ListElement {
            mode: "colorBurn"
        }
        ListElement {
            mode: "colorDodge"
        }
        ListElement {
            mode: "darken"
        }
        ListElement {
            mode: "darkenColor"
        }
        ListElement {
            mode: "difference"
        }
        ListElement {
            mode: "divide"
        }
        ListElement {
            mode: "exclusion"
        }
        ListElement {
            mode: "hardLight"
        }
        ListElement {
            mode: "hue"
        }
        ListElement {
            mode: "lighten"
        }
        ListElement {
            mode: "lighterColor"
        }
        ListElement {
            mode: "lightness"
        }
        ListElement {
            mode: "multiply"
        }
        ListElement {
            mode: "negation"
        }
        ListElement {
            mode: "saturation"
        }
        ListElement {
            mode: "screen"
        }
        ListElement {
            mode: "subtract"
        }
        ListElement {
            mode: "softLight"
        }
    }

    Item {
        id: viewArea
        anchors.top: parent.top
        anchors.bottom: parent.bottom
        anchors.right: parent.right
        anchors.left: controlArea.right

        //! [blending]
        BackgroundView {
            id: background
            anchors.fill: parent
        }

        ForegroundView {
            id: foreground
            anchors.fill: parent
        }

        Blend {
            anchors.fill: parent
            source: ShaderEffectSource {
                sourceItem: background
                hideSource: true
            }
            foregroundSource: ShaderEffectSource {
                sourceItem: foreground
                hideSource: true
            }
            // Take the blend mode from the selection in the list
            mode: modeModel.get(modeList.currentIndex).mode
        }
        //! [blending]
    }
}