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// Copyright (C) 2022 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
import QtQuick
Item {
id: rootItem
property alias blurSrc1: blurredItemSource1
property alias blurSrc2: blurredItemSource2
property alias blurSrc3: blurredItemSource3
property alias blurSrc4: blurredItemSource4
property alias blurSrc5: blurredItemSource5
component BlurItem : ShaderEffect {
property vector2d offset: Qt.vector2d((1.0 + rootItem.blurMultiplier) / width,
(1.0 + rootItem.blurMultiplier) / height)
visible: false
layer.enabled: true
layer.smooth: true
vertexShader: "bluritems.vert.qsb"
fragmentShader: "bluritems.frag.qsb"
}
QtObject {
id: priv
property bool useBlurItem1: true
property bool useBlurItem2: rootItem.blurMax > 2
property bool useBlurItem3: rootItem.blurMax > 8
property bool useBlurItem4: rootItem.blurMax > 16
property bool useBlurItem5: rootItem.blurMax > 32
}
BlurItem {
id: blurredItemSource1
property Item src: priv.useBlurItem1 ? source : null
// Size of the first blurred item is by default half of the source.
// Increase for quality and decrease for performance & more blur.
readonly property int blurItemSize: 8
width: src ? Math.ceil(src.width / 16) * blurItemSize : 0
height: src ? Math.ceil(src.height / 16) * blurItemSize : 0
}
BlurItem {
id: blurredItemSource2
property Item src: priv.useBlurItem2 ? blurredItemSource1 : null
width: blurredItemSource1.width * 0.5
height: blurredItemSource1.height * 0.5
}
BlurItem {
id: blurredItemSource3
property Item src: priv.useBlurItem3 ? blurredItemSource2 : null
width: blurredItemSource2.width * 0.5
height: blurredItemSource2.height * 0.5
}
BlurItem {
id: blurredItemSource4
property Item src: priv.useBlurItem4 ? blurredItemSource3 : null
width: blurredItemSource3.width * 0.5
height: blurredItemSource3.height * 0.5
}
BlurItem {
id: blurredItemSource5
property Item src: priv.useBlurItem5 ? blurredItemSource4 : null
width: blurredItemSource4.width * 0.5
height: blurredItemSource4.height * 0.5
}
}
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