137 lines
4.6 KiB
QML
137 lines
4.6 KiB
QML
/****************************************************************************
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**
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** Copyright (C) 2016 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 the Qt Quick Controls module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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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 Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 3 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL3 included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 3 requirements
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** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
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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 2.0 or (at your option) the GNU General
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** Public license version 3 or any later version approved by the KDE Free
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** Qt Foundation. The licenses are as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL2 and 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-2.0.html and
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** 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 2.2
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Item {
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id: rootItem
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property variant input
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property variant output
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property variant sourceRect
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visible: false
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Component.onCompleted: evaluateInput()
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onInputChanged: evaluateInput()
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onSourceRectChanged: evaluateInput()
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function evaluateInput() {
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if (input == undefined) {
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output = input
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}
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else if (sourceRect != undefined && sourceRect != Qt.rect(0, 0, 0, 0) && !isQQuickShaderEffectSource(input)) {
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proxySource.sourceItem = input
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output = proxySource
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proxySource.sourceRect = sourceRect
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}
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else if (isQQuickItemLayerEnabled(input)) {
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output = input
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}
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else if ((isQQuickImage(input) && !hasTileMode(input) && !hasChildren(input))) {
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output = input
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}
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else if (isQQuickShaderEffectSource(input)) {
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output = input
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}
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else {
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proxySource.sourceItem = input
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output = proxySource
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proxySource.sourceRect = Qt.rect(0, 0, 0, 0)
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}
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}
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function isQQuickItemLayerEnabled(item) {
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if (item.hasOwnProperty("layer")) {
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var l = item["layer"]
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if (l.hasOwnProperty("enabled") && l["enabled"].toString() == "true")
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return true
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}
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return false
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}
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function isQQuickImage(item) {
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var imageProperties = [ "fillMode", "progress", "asynchronous", "sourceSize", "status", "smooth" ]
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return hasProperties(item, imageProperties)
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}
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function isQQuickShaderEffectSource(item) {
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var shaderEffectSourceProperties = [ "hideSource", "format", "sourceItem", "mipmap", "wrapMode", "live", "recursive", "sourceRect" ]
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return hasProperties(item, shaderEffectSourceProperties)
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}
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function hasProperties(item, properties) {
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var counter = 0
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for (var j = 0; j < properties.length; j++) {
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if (item.hasOwnProperty(properties [j]))
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counter++
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}
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return properties.length == counter
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}
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function hasChildren(item) {
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if (item.hasOwnProperty("childrenRect")) {
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if (item["childrenRect"].toString() != "QRectF(0, 0, 0, 0)")
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return true
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else
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return false
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}
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return false
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}
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function hasTileMode(item) {
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if (item.hasOwnProperty("fillMode")) {
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if (item["fillMode"].toString() != "0")
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return true
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else
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return false
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}
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return false
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}
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ShaderEffectSource {
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id: proxySource
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live: rootItem.input != rootItem.output
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hideSource: false
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smooth: true
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visible: false
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}
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}
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