/usr/share/kde4/apps/plasma/plasmoids/nowplaying/contents/ui/MetadataLine.qml is in plasma-widgets-addons 4:4.14.2-1.
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* Copyright 2012 Alex Merry <alex.merry@kdemail.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License as
* published by the Free Software Foundation; either version 2 or
* (at your option) any later version.
*
* 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 General Public License for more details
*
* You should have received a copy of the GNU Library General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
import QtQuick 1.1
import org.kde.plasma.core 0.1 as PlasmaCore
import org.kde.plasma.components 0.1 as PlasmaComponents
Item {
id: root
property alias interval: timer.interval
property Mpris2 source
property bool showArtist: true
property bool showAlbum: true
implicitWidth: metadataLine.implicitWidth
implicitHeight: metadataLine.implicitHeight
Component.onCompleted: {
plasmoid.addEventListener('ConfigChanged', function(){
showArtist = plasmoid.readConfig("displayArtist");
showAlbum = plasmoid.readConfig("displayAlbum");
});
}
onSourceChanged: {
if (source) {
source.titleChanged.connect(function() {
if (metadataLine.step == 0)
metadataLine.updateText();
});
source.artistChanged.connect(function() {
if (metadataLine.step == 1)
metadataLine.updateText();
});
source.albumChanged.connect(function() {
if (metadataLine.step == 2)
metadataLine.updateText();
});
}
}
Label {
id: metadataLine
anchors {
// using this instead of parent.fill prevents spurious
// "possible anchor loop detected on fill" warnings
left: parent.left
right: parent.right
top: parent.top
bottom: parent.bottom
}
property int step: 0;
text: source.title
//fade-out and -in on text change
Behavior on text {
SequentialAnimation {
NumberAnimation { target: metadataLine; property: "opacity"; to: 0 }
//needs to be here, otherwise the text changes first and fades to itself
PropertyAction {}
NumberAnimation { target: metadataLine; property: "opacity"; to: 1 }
}
}
function updateText() {
var newText = source.title;
if (metadataLine.step == 1) {
if (showArtist && source.artist != '') {
newText = i18nc("What artist is this track by", "by %1", source.artist);
} else {
metadataLine.step = 2;
}
}
if (metadataLine.step == 2) {
if (showAlbum && source.album != '') {
newText = i18nc("What album is this track on", "on %1", source.album);
} else {
metadataLine.step = 0;
}
}
// prevent fading the text if it hasn't changed
if (text != newText) {
text = newText;
}
}
Timer {
id: timer
running: true
interval: 5000
repeat: true
onTriggered: {
metadataLine.step = (metadataLine.step + 1) % 3;
metadataLine.updateText();
}
}
}
}
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