/****************************************************************************
**
** Copyright (C) 2019 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
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** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
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****************************************************************************/

import QtQuick 2.12
import QtQuick.Window 2.0
import QtQuick3D 1.0
import QtQuick3D.Helpers 1.0
import QtQuick.Controls 2.0
import QtGraphicalEffects 1.0

Window {
    id: viewWindow
    width: 1024
    height: 768
    visible: true
    title: "3D"
    flags: Qt.WindowStaysOnTopHint | Qt.Window | Qt.WindowTitleHint | Qt.WindowCloseButtonHint

    property alias scene: editView.scene
    property alias showEditLight: editLightCheckbox.checked
    property alias usePerspective: usePerspectiveCheckbox.checked

    signal objectClicked(var object)

    Rectangle {
        id: sceneBg
        color: "#FFFFFF"
        anchors.fill: parent
        focus: true

        TapHandler { // check tapping/clicking an object in the scene
            onTapped: {
                var pickResult = editView.pick(eventPoint.scenePosition.x,
                                               eventPoint.scenePosition.y);
                viewWindow.objectClicked(pickResult.objectHit);
            }
        }

        View3D {
            id: editView
            anchors.fill: parent
            enableWireframeMode: true
            camera: editCamera

            AxisHelper {
                id: axisGrid
                enableXZGrid: true
                enableAxisLines: false
            }

            PointLight {
                id: pointLight
                visible: showEditLight
                position: editCamera.position
            }

            Camera {
                id: editCamera
                y: 200
                z: -300
                clipFar: 100000
                projectionMode: usePerspective ? Camera.Perspective : Camera.Orthographic
            }

            Component.onCompleted: {
                pointLight.setParentItem(editView.scene);
                editCamera.setParentItem(editView.scene);
            }
        }

        WasdController {
            id: cameraControl
            controlledObject: editView.camera
            acceptedButtons: Qt.RightButton

            onInputsNeedProcessingChanged: designStudioNativeCameraControlHelper.enabled
                                           = cameraControl.inputsNeedProcessing

            // Use separate native timer as QML timers don't work inside Qt Design Studio
            Connections {
                target: designStudioNativeCameraControlHelper
                onUpdateInputs: cameraControl.processInputs()
            }
        }
    }

    Column {
        y: 8
        CheckBox {
            id: editLightCheckbox
            checked: false
            text: qsTr("Use Edit View Light")
            onCheckedChanged: cameraControl.forceActiveFocus()
        }

        CheckBox {
            id: usePerspectiveCheckbox
            checked: true
            text: qsTr("Use Perspective Projection")
            onCheckedChanged: cameraControl.forceActiveFocus()
        }
    }

    Text {
        id: helpText
        text: qsTr("Camera: W,A,S,D,R,F,right mouse drag")
        anchors.bottom: parent.bottom
    }
}