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- /****************************************************************************
- **
- ** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
- ** Contact: http://www.qt-project.org/legal
- **
- ** This file is part of the Qt Graphical Effects module.
- **
- ** $QT_BEGIN_LICENSE:BSD$
- ** You may use this file under the terms of the BSD license as follows:
- **
- ** "Redistribution and use in source and binary forms, with or without
- ** modification, are permitted provided that the following conditions are
- ** met:
- ** * Redistributions of source code must retain the above copyright
- ** notice, this list of conditions and the following disclaimer.
- ** * Redistributions in binary form must reproduce the above copyright
- ** notice, this list of conditions and the following disclaimer in
- ** the documentation and/or other materials provided with the
- ** distribution.
- ** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
- ** of its contributors may be used to endorse or promote products derived
- ** from this software without specific prior written permission.
- **
- **
- ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
- **
- ** $QT_END_LICENSE$
- **
- ****************************************************************************/
-
- import QtQuick 2.0
-
- Item {
- id: rootItem
- property variant input
- property variant output
- property variant sourceRect
- visible: false
-
- Component.onCompleted: evaluateInput()
-
- onInputChanged: evaluateInput()
-
- onSourceRectChanged: evaluateInput()
-
- function evaluateInput() {
- if (input == undefined) {
- output = input
- }
- else if (sourceRect != undefined && sourceRect != Qt.rect(0, 0, 0, 0) && !isQQuickShaderEffectSource(input)) {
- proxySource.sourceItem = input
- output = proxySource
- proxySource.sourceRect = sourceRect
- }
- else if (isQQuickItemLayerEnabled(input)) {
- output = input
- }
- else if ((isQQuickImage(input) && !hasTileMode(input) && !hasChildren(input))) {
- output = input
- }
- else if (isQQuickShaderEffectSource(input)) {
- output = input
- }
- else {
- proxySource.sourceItem = input
- output = proxySource
- proxySource.sourceRect = Qt.rect(0, 0, 0, 0)
- }
- }
-
- function isQQuickItemLayerEnabled(item) {
- if (item.hasOwnProperty("layer")) {
- var l = item["layer"]
- if (l.hasOwnProperty("enabled") && l["enabled"].toString() == "true")
- return true
- }
- return false
- }
-
- function isQQuickImage(item) {
- var imageProperties = [ "fillMode", "progress", "asynchronous", "sourceSize", "status", "smooth" ]
- return hasProperties(item, imageProperties)
- }
-
- function isQQuickShaderEffectSource(item) {
- var shaderEffectSourceProperties = [ "hideSource", "format", "sourceItem", "mipmap", "wrapMode", "live", "recursive", "sourceRect" ]
- return hasProperties(item, shaderEffectSourceProperties)
- }
-
- function hasProperties(item, properties) {
- var counter = 0
- for (var j = 0; j < properties.length; j++) {
- if (item.hasOwnProperty(properties [j]))
- counter++
- }
- return properties.length == counter
- }
-
- function hasChildren(item) {
- if (item.hasOwnProperty("childrenRect")) {
- if (item["childrenRect"].toString() != "QRectF(0, 0, 0, 0)")
- return true
- else
- return false
- }
- return false
- }
-
- function hasTileMode(item) {
- if (item.hasOwnProperty("fillMode")) {
- if (item["fillMode"].toString() != "0")
- return true
- else
- return false
- }
- return false
- }
-
- ShaderEffectSource {
- id: proxySource
- live: rootItem.input != rootItem.output
- hideSource: false
- smooth: true
- visible: false
- }
- }
-