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// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only

import QtQuick 2.15
import QtQuick.Layouts 1.15
import HelperWidgets 2.0
import StudioTheme 1.0 as StudioTheme

Section {
    caption: qsTr("Shadows")
    width: parent.width

    SectionLayout {

        PropertyLabel {
            text: qsTr("Casts Shadow")
            tooltip: qsTr("Enables shadow casting for this light.")
        }

        SecondColumnLayout {
            CheckBox {
                id: shadowCheckBox
                text: backendValues.castsShadow.valueToString
                backendValue: backendValues.castsShadow
                implicitWidth: StudioTheme.Values.twoControlColumnWidth
                               + StudioTheme.Values.actionIndicatorWidth
            }

            ExpandingSpacer {}
        }

        // ### all the following should only be shown when shadows are enabled
        PropertyLabel {
            visible: shadowCheckBox.checked
            text: qsTr("Amount")
            tooltip: qsTr("Sets how dark the cast shadows should be.")
        }

        SecondColumnLayout {
            visible: shadowCheckBox.checked
            SpinBox {
                minimumValue: 0.0
                maximumValue: 100.0
                decimals: 0
                sliderIndicatorVisible: true
                backendValue: backendValues.shadowFactor
                enabled: shadowCheckBox.backendValue.value === true
                implicitWidth: StudioTheme.Values.singleControlColumnWidth
                               + StudioTheme.Values.actionIndicatorWidth
            }

            ExpandingSpacer {}
        }

        PropertyLabel {
            visible: shadowCheckBox.checked
            text: qsTr("Quality")
            tooltip: qsTr("Sets the quality of the shadow map created for shadow rendering.")
        }

        SecondColumnLayout {
            visible: shadowCheckBox.checked
            ComboBox {
                scope: "Light"
                model: ["ShadowMapQualityLow", "ShadowMapQualityMedium", "ShadowMapQualityHigh", "ShadowMapQualityVeryHigh", "ShadowMapQualityUltra"]
                backendValue: backendValues.shadowMapQuality
                enabled: shadowCheckBox.backendValue.value === true
                implicitWidth: StudioTheme.Values.singleControlColumnWidth
                               + StudioTheme.Values.actionIndicatorWidth
            }

            ExpandingSpacer {}
        }

        PropertyLabel {
            visible: shadowCheckBox.checked
            text: qsTr("Bias")
            tooltip: qsTr("Sets a slight offset to avoid self-shadowing artifacts.")
        }

        SecondColumnLayout {
            visible: shadowCheckBox.checked
            SpinBox {
                minimumValue: 0
                maximumValue: 9999999
                decimals: 2
                stepSize: 1
                backendValue: backendValues.shadowBias
                enabled: shadowCheckBox.backendValue.value === true
                implicitWidth: StudioTheme.Values.singleControlColumnWidth
                               + StudioTheme.Values.actionIndicatorWidth
            }

            ExpandingSpacer {}
        }

        PropertyLabel {
            visible: shadowCheckBox.checked
            text: qsTr("Soft Shadow Quality")
            tooltip: qsTr("Sets the quality of the soft shadows.")
        }

        SecondColumnLayout {
            visible: shadowCheckBox.checked
            ComboBox {
                scope: "Light"
                model: ["Hard", "PCF4", "PCF8", "PCF16", "PCF32", "PCF64"]
                backendValue: backendValues.softShadowQuality
                enabled: shadowCheckBox.backendValue.value === true
                implicitWidth: StudioTheme.Values.singleControlColumnWidth
                               + StudioTheme.Values.actionIndicatorWidth
            }

            ExpandingSpacer {}
        }

        PropertyLabel {
            visible: shadowCheckBox.checked
            text: qsTr("PCF Factor")
            tooltip: qsTr("Sets the PCF (percentage-closer filtering) factor.")
        }

        SecondColumnLayout {
            visible: shadowCheckBox.checked
            SpinBox {
                minimumValue: 0
                maximumValue: 9999999
                decimals: 1
                stepSize: 0.1
                backendValue: backendValues.pcfFactor
                enabled: shadowCheckBox.backendValue.value === true
                implicitWidth: StudioTheme.Values.singleControlColumnWidth
                               + StudioTheme.Values.actionIndicatorWidth
            }

            ExpandingSpacer {}
        }

        PropertyLabel {
            visible: shadowCheckBox.checked
            text: qsTr("Far Distance")
            tooltip: qsTr("Sets the maximum distance for the shadow map.")
        }

        SecondColumnLayout {
            visible: shadowCheckBox.checked
            SpinBox {
                minimumValue: 0
                maximumValue: 9999999
                decimals: 0
                stepSize: 10
                backendValue: backendValues.shadowMapFar
                enabled: shadowCheckBox.backendValue.value === true
                implicitWidth: StudioTheme.Values.singleControlColumnWidth
                               + StudioTheme.Values.actionIndicatorWidth
            }

            ExpandingSpacer {}
        }

        PropertyLabel {
            visible: shadowCheckBox.checked
            text: qsTr("Use 32-bit Shadowmap")
            tooltip: qsTr("Enables a 32-bit shadowmap texture for this light.")
        }

        SecondColumnLayout {
            visible: shadowCheckBox.checked
            CheckBox {
                text: backendValues.use32BitShadowmap.valueToString
                backendValue: backendValues.use32BitShadowmap
                implicitWidth: StudioTheme.Values.twoControlColumnWidth
                               + StudioTheme.Values.actionIndicatorWidth
            }

            ExpandingSpacer {}
        }
    }
}