feat: add seek to lyrics

Closes #1524

modules/dashboard/media/LyricList.qml

@@ -260,13 +260,14 @@ Item {
             id: lyric
 
             required property string modelData
+            required property int index
             property real effectScale: ListView.isCurrentItem ? 1 : 0
 
-            anchors.left: ListView.view?.contentItem.left
+            anchors.left: lyrics.contentItem.left
-            anchors.right: ListView.view?.contentItem.right
+            anchors.right: lyrics.contentItem.right
 
             text: modelData || ". . ."
-            color: ListView.isCurrentItem ? Colours.palette.m3primary : Colours.palette.m3outline
+            color: ListView.isCurrentItem ? Colours.palette.m3primary : mouse.containsMouse ? Colours.palette.m3onSurface : Colours.palette.m3outline
             font: Tokens.font.body.medium
             wrapMode: Text.WrapAtWordBoundaryOrAnywhere
 
@@ -284,6 +285,19 @@ Item {
                     type: Anim.SlowEffects
                 }
             }
+
+            MouseArea {
+                id: mouse
+
+                anchors.fill: parent
+                cursorShape: Qt.PointingHandCursor
+                hoverEnabled: true
+                onClicked: {
+                    const p = Players.active;
+                    if (p)
+                        p.position = Lyrics.timeForIndex(lyric.index);
+                }
+            }
         }
 
         Behavior on opacity {

plugin/src/Caelestia/Services/lyrics.cpp

@@ -223,6 +223,13 @@ int Lyrics::indexForTime(qreal time) const {
     return static_cast<int>(lo - 1);
 }
 
+qreal Lyrics::timeForIndex(int index) const {
+    if (index < 0 || index >= m_lines.size()) {
+        return -1.0;
+    }
+    return m_lines.at(index).time + m_offset;
+}
+
 void Lyrics::setTrack(const QString& artist, const QString& title, const QString& album, qreal duration) {
     const QString a = artist.trimmed();
     const QString t = title.trimmed();

plugin/src/Caelestia/Services/lyrics.hpp

@@ -51,6 +51,7 @@ public:
     [[nodiscard]] QString trackTitle() const;
 
     [[nodiscard]] Q_INVOKABLE int indexForTime(qreal time) const;
+    [[nodiscard]] Q_INVOKABLE qreal timeForIndex(int index) const;
     Q_INVOKABLE void setTrack(
         const QString& artist, const QString& title, const QString& album = {}, qreal duration = 0.0);
     Q_INVOKABLE void clearTrack();