// Copyright (C) 2022 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause

import QtQuick
import QtQuick.Window
import QtQuick.Controls
import QtQuick.Controls.Material

Rectangle {
    id: mainWindow

    // Multiplier for resolution independency
    readonly property real dp: 0.2 + Math.min(width, height) / 1200

    width: 1280
    height: 720
    visible: true
    color: "#404040"

    QtObject {
        id: settings
        property real settingsViewWidth: 100 + 150 * dp
        property int effectIndex: 0
        property int switchDuration: 1500
        property int itemSize: mainWindow.height * 0.6
    }

    Item {
        id: testItem1
        width: 1
        height: 1
    }

    Rectangle {
        id: testItem2
        anchors.fill: itemSwitcher
        color: "#d0d0d0"
        visible: false
        Image {
            anchors.fill: parent
            anchors.margins: 4
            source: "images/background.png"
        }
        Text {
            anchors.centerIn: parent
            font.pixelSize: 40 * dp
            horizontalAlignment: Text.AlignHCenter
            text: "This is the\nfirst item"
            color: "#ffffff"
            style: Text.Outline
            styleColor: "#202020"
        }
    }

    Rectangle {
        id: testItem3Content
        anchors.fill: itemSwitcher
        color: "white"
        border.width: 5
        visible: itemSwitcher.currentIndex === 2
        Text {
            anchors.centerIn: parent
            font.pixelSize: 48 * dp
            horizontalAlignment: Text.AlignHCenter
            text: "This is a\nDIFFERENT\nsecond item"
            rotation: slider.value * 360
        }
        Slider {
            id: slider
            anchors.top: parent.top
            anchors.topMargin: 20 * dp
            anchors.horizontalCenter: parent.horizontalCenter
            from: 0
            to: 1
            width: parent.width * 0.8
        }
        Button {
            anchors.bottom: parent.bottom
            anchors.bottomMargin: 20 * dp
            anchors.horizontalCenter: parent.horizontalCenter
            text: "Controls Button"
        }
    }
    ShaderEffectSource {
        // Wrap testItem3 into ShaderEffectSource so it doesn't need
        // visible = false and can be interactive.
        id: testItem3
        anchors.fill: testItem3Content
        sourceItem: testItem3Content
        hideSource: true
        visible: false
    }

    Image {
        id: testItem4
        source: "images/Built_with_Qt.png"
        anchors.fill: itemSwitcher
        visible: false
    }

    Image {
        id: testItem5
        source: "images/quit_coding.png"
        anchors.fill: itemSwitcher
        visible: false
    }

    Item {
        id: mainArea
        anchors.left: settingsView.right
        anchors.right: parent.right
        anchors.top: parent.top
        anchors.bottom: parent.bottom

        PagesView {
            id: pagesView
            anchors.horizontalCenter: parent.horizontalCenter
            anchors.top: parent.top
            anchors.topMargin: 20 * dp
            PagesItem {
                width: pagesView.itemSize
                height: pagesView.itemSize
                source: testItem1
                text: "(EMPTY)"
                selected: itemSwitcher.currentIndex === 0
                onClicked: {
                    itemSwitcher.currentIndex = 0;
                }
            }
            PagesItem {
                width: pagesView.itemSize
                height: pagesView.itemSize
                source: testItem2
                selected: itemSwitcher.currentIndex === 1
                onClicked: {
                    itemSwitcher.currentIndex = 1;
                }
            }
            PagesItem {
                width: pagesView.itemSize
                height: pagesView.itemSize
                source: testItem3
                selected: itemSwitcher.currentIndex === 2
                onClicked: {
                    itemSwitcher.currentIndex = 2;
                }
            }
            PagesItem {
                width: pagesView.itemSize
                height: pagesView.itemSize
                source: testItem4
                selected: itemSwitcher.currentIndex === 3
                onClicked: {
                    itemSwitcher.currentIndex = 3;
                }
            }
            PagesItem {
                width: pagesView.itemSize
                height: pagesView.itemSize
                source: testItem5
                selected: itemSwitcher.currentIndex === 4
                onClicked: {
                    itemSwitcher.currentIndex = 4;
                }
            }
        }
    }
    ItemSwitcher {
        id: itemSwitcher
        anchors.centerIn: mainArea
        anchors.verticalCenterOffset: pagesView.height / 2
        width: settings.itemSize
        height: settings.itemSize
        duration: settings.switchDuration
        Component.onCompleted: {
            // Add all switchable items into switcher
            sourceItems.push(testItem1);
            sourceItems.push(testItem2);
            sourceItems.push(testItem3);
            sourceItems.push(testItem4);
            sourceItems.push(testItem5);
            // From item is the currently selected one
            currentIndex = settings.effectIndex;
        }

        SwitchEffectBlinds {
            id: blindsEffect
            visible: settings.effectIndex == 0
            rotation: 45
        }
        SwitchEffectBlur {
            id: blurEffect
            visible: settings.effectIndex == 1
        }
        SwitchEffectHeart {
            id: heartEffect
            visible: settings.effectIndex == 2
        }
        SwitchEffectStars {
            id: starsEffect
            visible: settings.effectIndex == 3
        }
        SwitchEffectThunder {
            id: thunderEffect
            visible: settings.effectIndex == 4
        }
        SwitchEffect3DFlip {
            id: flipEffect
            visible: settings.effectIndex == 5
        }
    }

    SettingsView {
        id: settingsView
        anchors.top: parent.top
        anchors.bottom: parent.bottom
        anchors.margins: 20
    }
}