allow setting unreasonably high gain

apparently packing is still a thing or whatever... someone asked

res/css/main.css

@@ -382,3 +382,8 @@
 .voice-state-server {
     color: red;
 }
+
+spinbutton {
+    color: @text_color;
+    margin-top: 10px;
+}

src/windows/voicesettingswindow.cpp

@@ -110,9 +110,17 @@ VoiceSettingsWindow::VoiceSettingsWindow()
         }
     });
 
+    m_gain.set_increments(1.0, 5.0);
+    m_gain.set_range(0.0, 6969696969.0);
+    m_gain.set_value(Abaddon::Get().GetAudio().GetCaptureGain() * 100.0);
+    m_gain.signal_value_changed().connect([this]() {
+        m_signal_gain.emit(m_gain.get_value() / 100.0);
+    });
+
     m_main.add(m_encoding_mode);
     m_main.add(m_signal);
     m_main.add(m_bitrate);
+    m_main.add(m_gain);
     add(m_main);
     show_all_children();
 
@@ -122,4 +130,8 @@ VoiceSettingsWindow::VoiceSettingsWindow()
     });
 }
 
+VoiceSettingsWindow::type_signal_gain VoiceSettingsWindow::signal_gain() {
+    return m_signal_gain;
+}
+
 #endif

src/windows/voicesettingswindow.hpp

@@ -18,8 +18,14 @@ public:
     Gtk::ComboBoxText m_encoding_mode;
     Gtk::ComboBoxText m_signal;
     Gtk::Scale m_bitrate;
+    Gtk::SpinButton m_gain;
 
 private:
+    using type_signal_gain = sigc::signal<void(double)>;
+    type_signal_gain m_signal_gain;
+
+public:
+    type_signal_gain signal_gain();
 };
 
 #endif

src/windows/voicewindow.cpp

@@ -163,6 +163,11 @@ VoiceWindow::VoiceWindow(Snowflake channel_id)
     m_menu_view_sub.append(m_menu_view_settings);
     m_menu_view_settings.signal_activate().connect([this]() {
         auto *window = new VoiceSettingsWindow;
+        const auto cb = [this](double gain) {
+            m_capture_gain.set_value(gain * 100.0);
+            m_signal_gain.emit(gain);
+        };
+        window->signal_gain().connect(sigc::track_obj(cb, *this));
         window->show();
     });