Inital commit of the Komplex Hub
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Digital Artifex
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/****************************************************************************
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**
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** Copyright (C) 2024 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of Qt Quick Studio Components.
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**
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** $QT_BEGIN_LICENSE:GPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3 or (at your option) any later version
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** approved by the KDE Free Qt Foundation. The licenses are as published by
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** the Free Software Foundation and appearing in the file LICENSE.GPL3
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** included in the packaging of this file. Please review the following
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** information to ensure the GNU General Public License requirements will
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** be met: https://www.gnu.org/licenses/gpl-3.0.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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import QtQuick
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Item {
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id: root
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property int horizontalOffset: 10
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property int verticalOffset: 30
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property int spread: 0
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property color color: "black"
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property real radius: 10
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property bool showBehind: false
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required property Item source
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readonly property real sourceRotation: root.source.rotation
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readonly property real radiusCeiled: Math.ceil(root.radius)
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readonly property size orginialTextureSize: Qt.size(root.width + root.spread * 2,
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root.height + root.spread * 2)
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readonly property real sigma: root.radius / 2.7
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visible: true
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width: root.source.width
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height: root.source.height
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//Component.onCompleted: console.log("Drop Shadow created!")
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onSourceRotationChanged: root.calculateOffset()
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onRadiusCeiledChanged: root.calculateOffset()
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onSpreadChanged: root.calculateOffset()
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onHorizontalOffsetChanged: root.calculateOffset()
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onVerticalOffsetChanged: root.calculateOffset()
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signal geometryChanged()
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property point __offset: Qt.point(0, 0)
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function calculateOffset() {
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let mat = Qt.matrix4x4()
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mat.translate(Qt.vector3d(-root.spread, -root.spread, 0))
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mat.translate(Qt.vector3d(-root.radiusCeiled, -root.radiusCeiled, 0))
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mat.rotate(-root.sourceRotation, Qt.vector3d(0, 0, 1))
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root.__offset = mat.map(Qt.point(root.horizontalOffset, root.verticalOffset))
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root.__offset = Qt.point(Math.round(root.__offset.x), Math.round(root.__offset.y))
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root.geometryChanged()
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}
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readonly property bool copyActive: root.source instanceof Rectangle && root.spread !== 0
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Rectangle {
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id: sourceCopy
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visible: false
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width: Math.max(0, root.source.width + root.spread * 2)
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height: Math.max(0, root.source.height + root.spread * 2)
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radius: Math.max(0, root.source.radius !== 0 ? root.source.radius + root.spread : 0)
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color: "black"
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}
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ShaderEffectSource {
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id: shaderEffectSource
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visible: false
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width: root.orginialTextureSize.width
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height: root.orginialTextureSize.height
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sourceItem: root.copyActive ? sourceCopy : root.source
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}
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ShaderEffect {
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id: shadow
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property color color: root.color
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property var src: shaderEffectSource
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visible: false
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width: root.orginialTextureSize.width
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height: root.orginialTextureSize.height
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layer.enabled: true
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layer.sourceRect: Qt.rect(-root.radiusCeiled, -root.radiusCeiled,
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root.bluredTextureSize.width, root.bluredTextureSize.height)
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fragmentShader: "shaders/dropShadow.frag.qsb"
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}
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readonly property size bluredTextureSize: Qt.size(root.orginialTextureSize.width + root.radiusCeiled * 2,
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root.orginialTextureSize.height + root.radiusCeiled * 2)
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readonly property vector2d bluredPixelSize: Qt.vector2d(1.0 / root.bluredTextureSize.width,
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1.0 / root.bluredTextureSize.height)
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ShaderEffect {
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id: blurHorizontal
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property real blurKernel: root.radius
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property real sigma: root.sigma
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property var src: shadow
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property vector2d pixelSize: root.bluredPixelSize.times(Qt.vector2d(1, 0))
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property bool useOffscreenColor: false
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property color offscreenColor: "transparent"
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visible: false
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width: root.bluredTextureSize.width
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height: root.bluredTextureSize.height
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layer.enabled: true
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layer.smooth: true // Otherwise bluring artifacts
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fragmentShader: "shaders/gaussianBlur.frag.qsb"
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}
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ShaderEffect {
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id: blurVertical
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property real blurKernel: root.radius
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property real sigma: root.sigma
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property var src: blurHorizontal
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property vector2d pixelSize: root.bluredPixelSize.times(Qt.vector2d(0, 1))
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property bool useOffscreenColor: false
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property color offscreenColor: "transparent"
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visible: root.showBehind
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x: root.showBehind ? root.__offset.x : 0
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y: root.showBehind ? root.__offset.y : 0
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width: root.bluredTextureSize.width
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height: root.bluredTextureSize.height
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layer.enabled: !root.showBehind
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layer.sourceRect: Qt.rect(Math.min(0, -root.__offset.x),
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Math.min(0, -root.__offset.y),
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root.offsetTextureSize.width,
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root.offsetTextureSize.height)
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fragmentShader: "shaders/gaussianBlur.frag.qsb"
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}
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readonly property size offsetTextureSize: Qt.size(root.bluredTextureSize.width + Math.abs(root.__offset.x),
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root.bluredTextureSize.height + Math.abs(root.__offset.y))
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ShaderEffectSource {
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id: originalSource
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visible: false
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width: root.offsetTextureSize.width
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height: root.offsetTextureSize.height
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sourceItem: root.source
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sourceRect: Qt.rect(Math.min(0, root.__offset.x),
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Math.min(0, root.__offset.y),
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root.offsetTextureSize.width,
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root.offsetTextureSize.height)
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}
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ShaderEffect {
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id: result
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property var shadow: blurVertical
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property var original: originalSource
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visible: !root.showBehind
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x: -Math.max(0, -root.__offset.x)
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y: -Math.max(0, -root.__offset.y)
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width: root.offsetTextureSize.width
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height: root.offsetTextureSize.height
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fragmentShader: "shaders/dropShadowClip.frag.qsb"
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}
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readonly property rect boundingBox: Qt.rect(result.x, result.y, result.width, result.height)
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onBoundingBoxChanged: root.geometryChanged()
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}
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