feat: implement System Tray integration for window management and media controls

composeApp/src/jvmMain/kotlin/dev/krtirtho/spotube/core/di/Modules.jvm.kt

@@ -22,6 +22,7 @@ import dev.krtirtho.spotube.core.audioplayer.AudioPlayerInterface
 import dev.krtirtho.spotube.core.paths.Paths
 import dev.krtirtho.spotube.core.share.JvmShareService
 import dev.krtirtho.spotube.core.share.ShareService
+import dev.krtirtho.spotube.core.systemtray.SystemTrayService
 import dev.krtirtho.spotube.modules.library.local_tracks.media.JvmLocalMediaDiscoveryService
 import dev.krtirtho.spotube.modules.library.local_tracks.media.LocalMediaDiscoveryService
 import org.koin.core.module.dsl.singleOf
@@ -32,4 +33,5 @@ actual val platformModules = module {
     single<AudioPlayerInterface> { AudioPlayer(Unit) }
     single<LocalMediaDiscoveryService> { JvmLocalMediaDiscoveryService() }
     single<ShareService> { JvmShareService() }
+    single { SystemTrayService(get(), get(), get(), get()) }
 }

composeApp/src/jvmMain/kotlin/dev/krtirtho/spotube/core/systemtray/SystemTrayService.kt

@@ -0,0 +1,399 @@
+/*
+ * Copyright (C) 2026 Kingkor Roy Tirtho and Spotube Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package dev.krtirtho.spotube.core.systemtray
+
+import dev.krtirtho.spotube.core.audioplayer.AudioPlayerInterface
+import dev.krtirtho.spotube.core.audioplayer.AudioPlayerQueue
+import dev.krtirtho.spotube.core.audioplayer.LoopState
+import dev.krtirtho.spotube.core.audioplayer.PlayerState
+import dev.krtirtho.spotube.core.audioplayer.QueueEntry
+import dev.krtirtho.spotube.core.di.injectLogger
+import dev.krtirtho.spotube.modules.saved_tracks.SavedTracksRepository
+import dev.krtirtho.spotube.modules.settings.SettingsProvider
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.SupervisorJob
+import kotlinx.coroutines.flow.combine
+import kotlinx.coroutines.launch
+import org.koin.core.component.KoinComponent
+import java.awt.BorderLayout
+import java.awt.Color
+import java.awt.Dimension
+import java.awt.Image
+import java.awt.SystemTray
+import java.awt.Toolkit
+import java.awt.TrayIcon
+import java.awt.event.FocusAdapter
+import java.awt.event.FocusEvent
+import java.awt.event.MouseAdapter
+import java.awt.event.MouseEvent
+import java.awt.event.WindowAdapter
+import java.awt.event.WindowEvent
+import java.awt.image.BufferedImage
+import javax.swing.BorderFactory
+import javax.swing.BoxLayout
+import javax.swing.JCheckBoxMenuItem
+import javax.swing.JDialog
+import javax.swing.JLabel
+import javax.swing.JMenu
+import javax.swing.JMenuItem
+import javax.swing.JPanel
+import javax.swing.JPopupMenu
+import javax.swing.SwingUtilities
+import javax.swing.UIManager
+
+class SystemTrayService(
+    private val audioPlayer: AudioPlayerInterface,
+    private val audioPlayerQueue: AudioPlayerQueue,
+    private val settingsProvider: SettingsProvider,
+    private val savedTracksRepository: SavedTracksRepository,
+) : KoinComponent, AutoCloseable {
+
+    private val logger by injectLogger<SystemTrayService>()
+    private val scope = CoroutineScope(Dispatchers.Default + SupervisorJob())
+
+    private var trayIcon: TrayIcon? = null
+    private var menuDialog: TrayMenuDialog? = null
+
+    private var windowVisible: Boolean = true
+    private var onToggleWindowVisibility: (() -> Unit)? = null
+    private var onExit: (() -> Unit)? = null
+
+    @Volatile
+    private var started = false
+
+    private val volumeStep = 0.05f
+
+    fun start(
+        onToggleWindowVisibility: () -> Unit,
+        onExit: () -> Unit,
+    ) {
+        this.onToggleWindowVisibility = onToggleWindowVisibility
+        this.onExit = onExit
+
+        if (started) {
+            return
+        }
+        started = true
+
+        if (!SystemTray.isSupported()) {
+            logger.w { "System tray is not supported on this platform" }
+            return
+        }
+
+        SwingUtilities.invokeLater {
+            try {
+                val trayImage = createTrayIconImage()
+                val icon = TrayIcon(trayImage, "Spotube")
+                icon.isImageAutoSize = true
+                icon.addMouseListener(object : MouseAdapter() {
+                    override fun mouseClicked(e: MouseEvent) {
+                        if (e.button == MouseEvent.BUTTON1 && e.clickCount == 2) {
+                            onToggleWindowVisibility.invoke()
+                        } else if (e.button == MouseEvent.BUTTON3) {
+                            showMenuDialog(icon, e.xOnScreen, e.yOnScreen)
+                        }
+                    }
+                })
+
+                val systemTray = SystemTray.getSystemTray()
+                systemTray.add(icon)
+                this.trayIcon = icon
+
+                logger.i { "System tray initialized" }
+                observeState()
+            } catch (e: Exception) {
+                logger.e(e) { "Failed to initialize system tray" }
+            }
+        }
+    }
+
+    private fun showMenuDialog(icon: TrayIcon, x: Int, y: Int) {
+        val dialog = menuDialog
+        if (dialog != null && dialog.isVisible) {
+            dialog.dispose()
+            menuDialog = null
+            return
+        }
+
+        val newDialog = TrayMenuDialog().apply {
+            isUndecorated = true
+            isAlwaysOnTop = true
+            focusableWindowState = true
+            setAutoRequestFocus(true)
+            background = Color(0, 0, 0, 0)
+        }
+
+        val panel = JPanel()
+        panel.layout = BoxLayout(panel, BoxLayout.Y_AXIS)
+        panel.border = BorderFactory.createCompoundBorder(
+            BorderFactory.createLineBorder(Color(80, 80, 80), 1),
+            BorderFactory.createEmptyBorder(4, 4, 4, 4)
+        )
+        panel.background = UIManager.getColor("PopupMenu.background") ?: Color(45, 45, 45)
+
+        newDialog.contentPane.layout = BorderLayout()
+        newDialog.contentPane.add(panel, BorderLayout.CENTER)
+        newDialog.addWindowFocusListener(object : WindowAdapter() {
+            override fun windowLostFocus(e: WindowEvent) {
+                newDialog.isVisible = false
+                newDialog.dispose()
+                if (menuDialog === newDialog) menuDialog = null
+            }
+        })
+
+        menuDialog = newDialog
+        rebuildMenuPanel(panel, newDialog)
+        newDialog.pack()
+
+        val screenBounds = java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment()
+            .defaultScreenDevice.defaultConfiguration.bounds
+        val dialogWidth = newDialog.width
+        val dialogHeight = newDialog.height
+        val posX = if (x + dialogWidth > screenBounds.width) x - dialogWidth else x
+        val posY = if (y + dialogHeight > screenBounds.height) y - dialogHeight else y
+        newDialog.setLocation(posX, posY)
+        newDialog.isVisible = true
+        newDialog.requestFocus()
+    }
+
+    private fun rebuildMenuPanel(panel: JPanel, dialog: JDialog) {
+        panel.removeAll()
+        val state = currentState
+        if (state == null) {
+            panel.add(createDisabledLabel("Loading..."))
+            return
+        }
+
+        val media = state.mediaItem
+        val trackTitle = media?.title ?: "No track playing"
+        val trackArtist = media?.artist ?: ""
+
+        panel.add(createDisabledLabel(
+            if (trackArtist.isNotEmpty()) "$trackTitle - $trackArtist" else trackTitle
+        ))
+        panel.add(createSeparator())
+
+        panel.add(createMenuItem(if (windowVisible) "Hide Window" else "Show Window") {
+            onToggleWindowVisibility?.invoke()
+        })
+        panel.add(createSeparator())
+
+        val isPlaying = state.playerState == PlayerState.PLAYING
+        panel.add(createMenuItem(if (isPlaying) "Pause" else "Play") {
+            scope.launch { if (isPlaying) audioPlayer.pause() else audioPlayer.play() }
+        })
+        panel.add(createMenuItem("Next Track") {
+            scope.launch { audioPlayer.skipToNext() }
+        })
+        panel.add(createMenuItem("Previous Track") {
+            scope.launch { audioPlayer.skipToPrevious() }
+        })
+        panel.add(createSeparator())
+
+        panel.add(createCheckBoxMenuItem("Shuffle", state.shuffleEnabled) {
+            scope.launch { audioPlayer.shuffle(!state.shuffleEnabled) }
+        })
+
+        val loopSubMenu = JPanel()
+        loopSubMenu.layout = BoxLayout(loopSubMenu, BoxLayout.Y_AXIS)
+        loopSubMenu.background = panel.background
+        val loopGroup = javax.swing.ButtonGroup()
+        val loopNone = javax.swing.JRadioButtonMenuItem("Loop: OFF", state.loopState == LoopState.NONE)
+        val loopOne = javax.swing.JRadioButtonMenuItem("Loop: ONE", state.loopState == LoopState.ONE)
+        val loopAll = javax.swing.JRadioButtonMenuItem("Loop: ALL", state.loopState == LoopState.ALL)
+        loopGroup.add(loopNone)
+        loopGroup.add(loopOne)
+        loopGroup.add(loopAll)
+        loopNone.addActionListener { scope.launch { audioPlayer.loop(LoopState.NONE) } }
+        loopOne.addActionListener { scope.launch { audioPlayer.loop(LoopState.ONE) } }
+        loopAll.addActionListener { scope.launch { audioPlayer.loop(LoopState.ALL) } }
+        loopSubMenu.add(loopNone)
+        loopSubMenu.add(loopOne)
+        loopSubMenu.add(loopAll)
+        panel.add(createSubMenuLabel("Loop"))
+        panel.add(loopSubMenu)
+        panel.add(createSeparator())
+
+        val volumePercent = (state.volume * 100).toInt()
+        panel.add(createDisabledLabel("Volume: $volumePercent%"))
+        panel.add(createMenuItem("Volume +") {
+            scope.launch {
+                val newVol = (state.volume + volumeStep).coerceAtMost(1f)
+                audioPlayer.setVolume(newVol)
+            }
+        })
+        panel.add(createMenuItem("Volume -") {
+            scope.launch {
+                val newVol = (state.volume - volumeStep).coerceAtLeast(0f)
+                audioPlayer.setVolume(newVol)
+            }
+        })
+        val isMuted = state.volume <= 0f
+        panel.add(createMenuItem(if (isMuted) "Unmute" else "Mute") {
+            scope.launch { audioPlayer.setVolume(if (isMuted) 0.5f else 0f) }
+        })
+        panel.add(createSeparator())
+
+        val currentTrackId = (state.currentEntry as? QueueEntry.StreamingTrack)?.track?.id
+        val isLiked = currentTrackId != null && state.savedTrackIds.contains(currentTrackId)
+        val likeLabel = if (currentTrackId == null) "Like (No track)" else if (isLiked) "Unlike Track" else "Like Track"
+        panel.add(createMenuItem(likeLabel, enabled = currentTrackId != null) {
+            val trackId = currentTrackId ?: return@createMenuItem
+            scope.launch {
+                if (isLiked) savedTracksRepository.removeSavedTracks(listOf(trackId))
+                else savedTracksRepository.saveTracks(listOf(trackId))
+            }
+        })
+        panel.add(createSeparator())
+
+        panel.add(createMenuItem("Exit") { onExit?.invoke() })
+
+        panel.revalidate()
+        panel.repaint()
+        dialog.pack()
+    }
+
+    @Volatile
+    private var currentState: TrayState? = null
+
+    private fun observeState() {
+        scope.launch {
+            combine(
+                audioPlayer.playerStateFlow,
+                audioPlayer.currentMediaItemFlow,
+                audioPlayer.loopStateFlow,
+                audioPlayer.shuffleModeFlow,
+                audioPlayer.volumeFlow,
+                audioPlayerQueue.currentQueueEntryFlow,
+                savedTracksRepository.savedTracksIdsFlow,
+            ) { values ->
+                TrayState(
+                    playerState = values[0] as PlayerState,
+                    mediaItem = values[1] as dev.krtirtho.spotube.core.audioplayer.MediaItem?,
+                    loopState = values[2] as LoopState,
+                    shuffleEnabled = values[3] as Boolean,
+                    volume = values[4] as Float,
+                    currentEntry = values[5] as QueueEntry?,
+                    savedTrackIds = @Suppress("UNCHECKED_CAST") (values[6] as Set<String>),
+                )
+            }.collect { state ->
+                currentState = state
+                SwingUtilities.invokeLater {
+                    updateTooltip(state)
+                    menuDialog?.let { dialog ->
+                        val panel = dialog.contentPane.getComponent(0) as? JPanel
+                        if (panel != null) rebuildMenuPanel(panel, dialog)
+                    }
+                }
+            }
+        }
+    }
+
+    private fun updateTooltip(state: TrayState) {
+        val icon = trayIcon ?: return
+        val media = state.mediaItem
+        icon.toolTip = if (media != null) {
+            "Spotube - ${media.title} by ${media.artist}"
+        } else {
+            "Spotube"
+        }
+    }
+
+    private fun createMenuItem(label: String, enabled: Boolean = true, action: () -> Unit): JMenuItem {
+        return JMenuItem(label).apply {
+            isEnabled = enabled
+            maximumSize = Dimension(Int.MAX_VALUE, preferredSize.height)
+            addActionListener { action() }
+        }
+    }
+
+    private fun createCheckBoxMenuItem(label: String, selected: Boolean, action: () -> Unit): JCheckBoxMenuItem {
+        return JCheckBoxMenuItem(label, selected).apply {
+            maximumSize = Dimension(Int.MAX_VALUE, preferredSize.height)
+            addActionListener { action() }
+        }
+    }
+
+    private fun createDisabledLabel(text: String): JLabel {
+        return JLabel(text).apply {
+            foreground = Color(150, 150, 150)
+            maximumSize = Dimension(Int.MAX_VALUE, preferredSize.height)
+            alignmentX = java.awt.Component.LEFT_ALIGNMENT
+        }
+    }
+
+    private fun createSubMenuLabel(text: String): JLabel {
+        return JLabel(text).apply {
+            foreground = UIManager.getColor("MenuItem.foreground") ?: Color.WHITE
+            maximumSize = Dimension(Int.MAX_VALUE, preferredSize.height)
+            alignmentX = java.awt.Component.LEFT_ALIGNMENT
+        }
+    }
+
+    private fun createSeparator(): javax.swing.JSeparator {
+        return javax.swing.JSeparator().apply {
+            maximumSize = Dimension(Int.MAX_VALUE, 2)
+        }
+    }
+
+    fun setWindowVisible(visible: Boolean) {
+        windowVisible = visible
+    }
+
+    override fun close() {
+        menuDialog?.dispose()
+        menuDialog = null
+        trayIcon?.let {
+            try {
+                SystemTray.getSystemTray().remove(it)
+            } catch (e: Exception) {
+                logger.e(e) { "Failed to remove tray icon" }
+            }
+        }
+        trayIcon = null
+    }
+
+    private fun createTrayIconImage(): Image {
+        val resource = javaClass.classLoader.getResource("icon.png")
+            ?: javaClass.classLoader.getResource("icons/spotube.png")
+        if (resource != null) {
+            return Toolkit.getDefaultToolkit().getImage(resource)
+        }
+        val img = BufferedImage(16, 16, BufferedImage.TYPE_INT_ARGB)
+        val g = img.createGraphics()
+        g.color = Color(34, 197, 94)
+        g.fillOval(0, 0, 16, 16)
+        g.color = Color.WHITE
+        g.fillOval(5, 5, 6, 6)
+        g.dispose()
+        return img
+    }
+
+    private class TrayMenuDialog : JDialog()
+
+    private data class TrayState(
+        val playerState: PlayerState,
+        val mediaItem: dev.krtirtho.spotube.core.audioplayer.MediaItem?,
+        val loopState: LoopState,
+        val shuffleEnabled: Boolean,
+        val volume: Float,
+        val currentEntry: QueueEntry?,
+        val savedTrackIds: Set<String>,
+    )
+}

composeApp/src/jvmMain/kotlin/dev/krtirtho/spotube/core/ui/component/ApplicationMainBar.jvm.kt

@@ -31,15 +31,20 @@ import androidx.compose.material3.Icon
 import androidx.compose.material3.IconButton
 import androidx.compose.material3.TopAppBar
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.getValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.window.WindowPlacement
+import dev.krtirtho.spotube.core.systemtray.SystemTrayService
+import dev.krtirtho.spotube.modules.settings.SettingsProvider
 import dev.krtirtho.spotube.resources.iconsax.FluentDismiss
 import dev.krtirtho.spotube.resources.iconsax.FluentMaximize
 import dev.krtirtho.spotube.resources.iconsax.FluentMinus
 import dev.krtirtho.spotube.resources.iconsax.FluentSquareMultiple
 import dev.krtirtho.spotube.resources.iconsax.Iconsax
+import org.koin.compose.koinInject
 
 
 @OptIn(ExperimentalMaterial3Api::class, ExperimentalMaterial3ExpressiveApi::class)
@@ -78,6 +83,10 @@ actual fun ApplicationMainBar(
 private fun WindowButtons(modifier: Modifier = Modifier) {
     val windowState = LocalWindowState.current
     val applicationScope = LocalApplicationScope.current
+    val settingsProvider = koinInject<SettingsProvider>()
+    val systemTrayService = koinInject<SystemTrayService>()
+    val settings by settingsProvider.settingsState.collectAsState(initial = null)
+    val minimizeToTray = settings?.minimizeToTray ?: false
 
     Row(
         modifier = modifier,
@@ -111,7 +120,12 @@ private fun WindowButtons(modifier: Modifier = Modifier) {
         }
         IconButton(
             onClick = {
-                applicationScope.exitApplication()
+                if (minimizeToTray) {
+                    windowState.isMinimized = true
+                    systemTrayService.setWindowVisible(false)
+                } else {
+                    applicationScope.exitApplication()
+                }
             }) {
             Icon(
                 Iconsax.FluentDismiss, "Close", modifier = Modifier.size(14.dp)

composeApp/src/jvmMain/kotlin/dev/krtirtho/spotube/main.kt

@@ -18,6 +18,8 @@
 package dev.krtirtho.spotube
 
 import androidx.compose.runtime.CompositionLocalProvider
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.getValue
 import androidx.compose.ui.ExperimentalComposeUiApi
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.window.Window
@@ -27,9 +29,11 @@ import androidx.compose.ui.window.rememberWindowState
 import dev.krtirtho.spotube.core.di.initKoin
 import dev.krtirtho.spotube.core.newpipe.NewPipeDownloader
 import dev.krtirtho.spotube.core.paths.Paths
+import dev.krtirtho.spotube.core.systemtray.SystemTrayService
 import dev.krtirtho.spotube.core.ui.component.LocalApplicationScope
 import dev.krtirtho.spotube.core.ui.component.LocalWindowScope
 import dev.krtirtho.spotube.core.ui.component.LocalWindowState
+import dev.krtirtho.spotube.modules.settings.SettingsProvider
 import io.github.vinceglb.filekit.FileKit
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
@@ -42,6 +46,11 @@ object KoinPathsProvider : KoinComponent {
     val paths: Paths get() = get()
 }
 
+private object KoinServicesProvider : KoinComponent {
+    val systemTrayService: SystemTrayService get() = get()
+    val settingsProvider: SettingsProvider get() = get()
+}
+
 @OptIn(ExperimentalComposeUiApi::class)
 fun main() {
     FileKit.init(appId = "dev.krtirtho.spotube")
@@ -55,14 +64,26 @@ fun main() {
             height = 720.dp
         )
 
+        val settingsProvider = KoinServicesProvider.settingsProvider
+        val settings by settingsProvider.settingsState.collectAsState(initial = null)
+        val minimizeToTray = settings?.minimizeToTray ?: false
+
+        val systemTrayService = KoinServicesProvider.systemTrayService
+
         Window(
             state = windowState,
             onCloseRequest = {
-                appScope.cancel()
-                exitApplication()
+                if (minimizeToTray) {
+                    windowState.isMinimized = true
+                    systemTrayService.setWindowVisible(false)
+                } else {
+                    appScope.cancel()
+                    exitApplication()
+                }
             },
             title = "Spotube",
             decoration = WindowDecoration.Undecorated(),
+            visible = true,
         ) {
             CompositionLocalProvider(
                 LocalApplicationScope provides this@application,
@@ -72,5 +93,17 @@ fun main() {
                 App()
             }
         }
+
+        systemTrayService.start(
+            onToggleWindowVisibility = {
+                windowState.isMinimized = !windowState.isMinimized
+                systemTrayService.setWindowVisible(!windowState.isMinimized)
+            },
+            onExit = {
+                systemTrayService.close()
+                appScope.cancel()
+                exitApplication()
+            }
+        )
     }
 }