add volume widget

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
+}