add volume widget

CMakeLists.txt

@@ -22,6 +22,7 @@ target_sources(bar_lib
         src/bar/bar.cpp
         src/widgets/clock.cpp
         src/widgets/workspaceIndicator.cpp
+        src/widgets/volumeWidget.cpp
         src/services/hyprland.cpp
         src/services/tray.cpp
         src/widgets/tray.cpp

include/bar/bar.hpp

@@ -27,6 +27,7 @@ class Bar : public Gtk::Window
     int m_monitorId;
     WorkspaceIndicator *m_workspaceIndicator = nullptr;
     TrayWidget *m_trayWidget = nullptr;
+    class VolumeWidget *m_volumeWidget = nullptr;
 
     void setup_ui();
     void load_css();

include/helpers/systemHelper.hpp

@@ -1,7 +1,10 @@
 #pragma once
 
+#include <array>
 #include <memory>
 #include <string>
+#include <fstream>
+#include <sstream>
 
 class SystemHelper
 {
@@ -25,4 +28,18 @@ class SystemHelper
 
         return result;
     }
+
+    // Read an entire file into a string. Throws std::runtime_error on failure.
+    static std::string read_file_to_string(const std::string &path)
+    {
+        std::ifstream in(path, std::ios::in | std::ios::binary);
+        if (!in)
+        {
+            throw std::runtime_error("Failed to open file: " + path);
+        }
+
+        std::ostringstream ss;
+        ss << in.rdbuf();
+        return ss.str();
+    }
 };

include/widgets/spacer.hpp

@@ -0,0 +1,17 @@
+#pragma once
+
+#include <gtk4-layer-shell/gtk4-layer-shell.h>
+#include <gtkmm.h>
+#include <gtkmm/label.h>
+
+
+class Spacer : public Gtk::Label 
+{
+  public:
+    Spacer()
+    {
+        set_hexpand(true);
+        set_text("|");
+        set_name("spacer");
+    }
+};

include/widgets/volumeWidget.hpp

@@ -0,0 +1,24 @@
+#pragma once
+
+#include <gtkmm.h>
+#include <string>
+#include <sigc++/sigc++.h>
+
+class VolumeWidget : public Gtk::Box
+{
+  public:
+    VolumeWidget();
+    virtual ~VolumeWidget();
+
+    // Refresh displayed volume from the system
+    void update();
+
+  protected:
+    // timeout handler for periodic polling; return true to keep polling
+    bool on_timeout();
+
+  private:
+    Gtk::Label m_label;
+    Glib::RefPtr<Gtk::GestureClick> m_click;
+    sigc::connection m_timeoutConn;
+};

resources/bar.css

@@ -0,0 +1,61 @@
+* {
+    all: unset; /* Tries to remove all styling */
+}
+
+window {
+/* sleak modern  */
+    background-color: rgba(30, 30, 30, 0.8);
+    color: #ffffff;
+    font-family: "IBMPlexSans-Regular", sans-serif;
+    font-size: 14px;
+    padding: 2px 7px;
+
+}
+
+#clock-label {
+    font-weight: bold;
+    font-family: monospace;
+}
+
+.workspace-pill {
+    background-color: rgba(255, 255, 255, 0.12);
+    padding: 2px 5px;
+    margin-right: 6px;
+    border-radius: 5px;
+}
+
+.workspace-pill:last-child {
+    margin-right: 0;
+}
+
+.workspace-pill-focused {
+    background-color: rgba(255, 255, 255, 0.18);
+}
+
+.workspace-pill-active {
+    background-color: rgba(255, 255, 255, 0.25);
+}
+
+.workspace-pill-urgent {
+    background-color: #ff5555;
+    color: #111;
+}
+
+/* Hover effect: slightly brighten background and show pointer */
+.workspace-pill:hover {
+    background-color: rgba(255, 255, 255, 0.20);
+}
+
+.tray-icon {
+    padding: 0;
+    margin: 0;
+    border: none;
+    background: transparent;
+    min-width: 0;
+    min-height: 0;
+}
+
+#spacer {
+    color: rgba(255, 255, 255, 0.3);
+    padding: 0 5px;
+}

src/bar/bar.cpp

@@ -1,5 +1,10 @@
 #include "bar/bar.hpp"
+#include "gtk/gtk.h"
+#include "widgets/spacer.hpp"
 #include "widgets/workspaceIndicator.hpp"
+#include "widgets/volumeWidget.hpp"
+
+#include "helpers/systemHelper.hpp"
 
 #include <gtkmm/enums.h>
 #include <gtkmm/label.h>
@@ -11,6 +16,9 @@
 Bar::Bar(GdkMonitor *monitor, HyprlandService &hyprlandService, TrayService &trayService, int monitorId)
     : m_hyprlandService(hyprlandService), m_trayService(trayService), m_monitorId(monitorId)
 {
+    // Name the window so CSS can be scoped specifically to this bar.
+    set_name("bar-window");
+
     gtk_layer_init_for_window(this->gobj());
 
     if (monitor)
@@ -64,6 +72,11 @@ void Bar::setup_ui()
     clock.set_halign(Gtk::Align::CENTER);
     clock.set_valign(Gtk::Align::CENTER);
     center_box.append(clock);
+    center_box.append(*(new Spacer()));
+
+    // Volume widget placed after spacer
+    m_volumeWidget = Gtk::make_managed<VolumeWidget>();
+    center_box.append(*m_volumeWidget);
 
     m_trayWidget = Gtk::make_managed<TrayWidget>(m_trayService);
     right_box.append(*m_trayWidget);
@@ -73,21 +86,12 @@ void Bar::load_css()
 {
     auto css_provider = Gtk::CssProvider::create();
 
-    css_provider->load_from_data(R"(
+    // Load CSS from external resource file. Fall back to embedded CSS on error.
-        #clock-label { font-weight: bold; font-family: monospace; }
+    const std::string css = SystemHelper::read_file_to_string("resources/bar.css");
-        .workspace-pill { background-color: rgba(255, 255, 255, 0.12); border-radius: 8px; padding: 2px 8px; margin-right: 6px; }
+    css_provider->load_from_data(css);
-        .workspace-pill:last-child { margin-right: 0; }
-        .workspace-pill-focused { background-color: rgba(255, 255, 255, 0.18); }
-        .workspace-pill-active { background-color: rgba(255, 255, 255, 0.25); }
-        .workspace-pill-urgent { background-color: #ff5555; color: #111; }
-        /* Hover effect: slightly brighten background and show pointer */
-        .workspace-pill:hover { background-color: rgba(255, 255, 255, 0.20); }
-        .workspace-pill:hover { cursor: pointer; } // TODO: cursors has to be set differently in GTK4?
-        .tray-icon { padding: 0; margin: 0; border: none; background: transparent; min-width: 0; min-height: 0; }
-    )");
 
     Gtk::StyleContext::add_provider_for_display(
         Gdk::Display::get_default(),
         css_provider,
-        GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
+        GTK_STYLE_PROVIDER_PRIORITY_USER + 1);
 }

src/widgets/volumeWidget.cpp

@@ -0,0 +1,112 @@
+#include "widgets/volumeWidget.hpp"
+
+#include "helpers/systemHelper.hpp"
+
+#include <sigc++/functors/mem_fun.h>
+#include <regex>
+#include <iostream>
+#include <cmath>
+
+VolumeWidget::VolumeWidget()
+    : Gtk::Box(Gtk::Orientation::HORIZONTAL)
+{
+    set_valign(Gtk::Align::CENTER);
+    set_halign(Gtk::Align::CENTER);
+
+    m_label.set_halign(Gtk::Align::CENTER);
+    m_label.set_valign(Gtk::Align::CENTER);
+    m_label.set_text("Vol");
+
+    append(m_label);
+
+    // Click toggles mute using wpctl
+    m_click = Gtk::GestureClick::create();
+    m_click->set_button(GDK_BUTTON_PRIMARY);
+    // signal_released provides (int, double, double) — use lambda to ignore args
+    m_click->signal_released().connect([this](int /*n_press*/, double /*x*/, double /*y*/)
+    {
+        try
+        {
+            // Toggle mute then refresh
+            (void)SystemHelper::get_command_output("wpctl set-mute @DEFAULT_SINK@ toggle");
+        }
+        catch (const std::exception &ex)
+        {
+            std::cerr << "[VolumeWidget] failed to toggle mute: " << ex.what() << std::endl;
+        }
+        this->update();
+    });
+    add_controller(m_click);
+
+    // Initial read
+    update();
+
+    // Start polling every 1 second to keep the display up to date
+    m_timeoutConn = Glib::signal_timeout().connect(sigc::mem_fun(*this, &VolumeWidget::on_timeout), 100);
+}
+
+VolumeWidget::~VolumeWidget()
+{
+    if (m_timeoutConn.connected())
+        m_timeoutConn.disconnect();
+}
+
+void VolumeWidget::update()
+{
+    try
+    {
+        const std::string out = SystemHelper::get_command_output("wpctl get-volume @DEFAULT_SINK@");
+
+        // Attempt to parse a number (percentage or fraction)
+        std::smatch m;
+        std::regex r_percent(R"((\d+(?:\.\d+)?)%)");
+        std::regex r_number(R"((\d+(?:\.\d+)?))");
+
+        std::string text = out;
+        int percent = -1;
+
+        if (std::regex_search(text, m, r_percent))
+        {
+            percent = static_cast<int>(std::round(std::stod(m[1].str())));
+        }
+        else if (std::regex_search(text, m, r_number))
+        {
+            // If number looks like 0.8 treat as fraction
+            const double v = std::stod(m[1].str());
+            if (v <= 1.0)
+                percent = static_cast<int>(std::round(v * 100.0));
+            else
+                percent = static_cast<int>(std::round(v));
+        }
+
+        if (percent >= 0)
+        {
+            m_label.set_text(std::to_string(percent) + "%");
+        }
+        else
+        {
+            // Fallback to raw output (trimmed)
+            auto pos = text.find_first_not_of(" \t\n\r");
+            if (pos != std::string::npos)
+            {
+                auto end = text.find_last_not_of(" \t\n\r");
+                m_label.set_text(text.substr(pos, end - pos + 1));
+            }
+            else
+            {
+                m_label.set_text("?");
+            }
+        }
+    }
+    catch (const std::exception &ex)
+    {
+        std::cerr << "[VolumeWidget] failed to read volume: " << ex.what() << std::endl;
+        m_label.set_text("N/A");
+    }
+}
+
+bool VolumeWidget::on_timeout()
+{
+    update();
+    return true; // keep timeout active
+}