Full mixer implementation — tray, popup, prefs, devices tab with port indicators

Adds the complete tmix feature set built since the initial skeleton:
balance knob, level meters, KLed mute button, system tray with scroll-wheel
volume and recording indicator, tray popup, preferences dialog, right-click
context menus, single-instance enforcement, scroll area, window geometry
persistence, and Devices tab with PA card profile switcher and live port
availability indicators (2-column layout, in-place updates on plug/unplug).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

1 files changed, 36 insertions, 0 deletions

diff --git a/src/ui/tmixtray.h b/src/ui/tmixtray.h
new file mode 100644
index 0000000..08a5fb5
--- /dev/null
+++ b/src/ui/tmixtray.h
@@ -0,0 +1,36 @@
+#pragma once
+
+#include <ksystemtray.h>
+
+class AudioDevice;
+class PulseModel;
+class TmixPopup;
+
+class TmixTray : public KSystemTray
+{
+    TQ_OBJECT
+
+public:
+    TmixTray( TQWidget *parent );
+    void setDevice( AudioDevice *dev );
+    void setModel( PulseModel *model );
+
+public slots:
+    void updateIcon();
+    void onRecordingActive( bool active );
+    void onDeviceAdded( AudioDevice *dev );
+
+protected:
+    void mousePressEvent( TQMouseEvent *e );
+    void wheelEvent( TQWheelEvent *e );
+    void contextMenuAboutToShow( TDEPopupMenu *menu );
+
+private:
+    void updateRecordingTray();
+
+    PulseModel   *m_model;
+    AudioDevice  *m_device;
+    KSystemTray  *m_recTray;
+    TmixPopup    *m_popup;
+    int           m_recordingCount;
+};