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, 42 insertions, 0 deletions

diff --git a/src/ui/tmixpopup.h b/src/ui/tmixpopup.h
new file mode 100644
index 0000000..4dbdc9a
--- /dev/null
+++ b/src/ui/tmixpopup.h
@@ -0,0 +1,42 @@
+#pragma once
+
+#include <tqwidget.h>
+#include <tqdatetime.h>
+
+class PulseModel;
+class AudioDevice;
+class DeviceWidget;
+class TQVBoxLayout;
+class TQPushButton;
+
+class TmixPopup : public TQWidget
+{
+    TQ_OBJECT
+
+public:
+    explicit TmixPopup( PulseModel *model, TQWidget *parent = 0 );
+
+    // Position relative to tray icon and show, or hide if already visible.
+    void toggleAt( const TQPoint &trayGlobalPos, const TQSize &traySize );
+
+    // True for ~300ms after hiding — prevents re-show on the same click.
+    bool justHidden() const;
+
+signals:
+    void showMixerRequested();
+
+protected:
+    void hideEvent( TQHideEvent *e );
+    void wheelEvent( TQWheelEvent *e );
+
+private slots:
+    void onDefaultOutputChanged( AudioDevice *dev );
+
+private:
+    void setDevice( AudioDevice *dev );
+
+    PulseModel   *m_model;
+    DeviceWidget *m_devWidget;
+    TQVBoxLayout  *m_layout;
+    TQTime         m_hideTime;
+};