/usr/lib/x86_64-linux-gnu/qt5/qml/Ubuntu/Components/ListItems/1.3/ImageWithFallback.qml is in qml-module-ubuntu-components 1.3.1918+16.04.20160404-0ubuntu1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 | /*
* Copyright 2012 Canonical Ltd.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; version 3.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
import QtQuick 2.4
Image {
id: image
property url fallbackSource
property bool fallbackRequired: false
function isSourceDefined(sourceUrl) {
return sourceUrl != "" && sourceUrl != undefined
}
function tryLoadingFallbackSource() {
if (isSourceDefined(fallbackSource)) {
source = fallbackSource
}
}
function checkStatus() {
if (!isSourceDefined(source) || (status == Image.Error && source != fallbackSource)) {
fallbackRequired = true
tryLoadingFallbackSource()
}
}
onSourceChanged: fallbackRequired = false
onFallbackSourceChanged: if (fallbackRequired) tryLoadingFallbackSource()
onStatusChanged: checkStatus()
Component.onCompleted: checkStatus()
}
|