deine cousine 4. grades

CMakeLists.txt

@@ -28,6 +28,7 @@ target_sources(bar_lib
         src/widgets/workspaceIndicator.cpp
         src/widgets/volumeWidget.cpp
         src/widgets/webWidget.cpp
+        src/widgets/battery.cpp
         
         src/services/todo.cpp
         src/services/sqliteTodoAdapter.cpp

include/bar/bar.hpp

@@ -4,13 +4,14 @@
 #include <gtkmm.h>
 
 #include "icons.hpp"
+#include "widgets/battery.hpp"
 #include "widgets/clock.hpp"
+#include "widgets/controlCenter.hpp"
 #include "widgets/date.hpp"
 #include "widgets/tray.hpp"
 #include "widgets/volumeWidget.hpp"
 #include "widgets/webWidget.hpp"
 #include "widgets/workspaceIndicator.hpp"
-#include "widgets/controlCenter.hpp"
 
 class Bar : public Gtk::Window {
   public:
@@ -32,6 +33,7 @@ class Bar : public Gtk::Window {
     WorkspaceIndicator *workspaceIndicator = nullptr;
     TrayWidget *trayWidget                 = nullptr;
     VolumeWidget *volumeWidget             = nullptr;
+    BatteryWidget *batteryWidget           = nullptr;
 
 
     void setup_ui();

include/widgets/battery.hpp

@@ -0,0 +1,26 @@
+#pragma once
+
+#include <filesystem>
+#include <gtkmm/box.h>
+#include <gtkmm/label.h>
+#include <sigc++/connection.h>
+
+class BatteryWidget : public Gtk::Box {
+  public:
+    BatteryWidget();
+    ~BatteryWidget();
+
+  private:
+    Gtk::Label iconLabel;
+    Gtk::Label label;
+    sigc::connection timeoutConn;
+    std::filesystem::path batteryPath;
+    std::string currentStateClass;
+
+    void update();
+    bool on_timeout();
+    void find_battery_path();
+    void set_state_class(const std::string &stateClass);
+    std::string build_icon(int capacity, bool hasBattery, bool charging, bool full) const;
+    std::string build_text(int capacity, const std::string &status, bool hasBattery, bool charging, bool full) const;
+};

resources/bar.css

@@ -136,3 +136,93 @@ button {
 		opacity: 1;
 	}
 }
+
+.battery-widget {
+	padding: 2px 6px;
+	border-radius: 6px;
+	background-color: rgba(255, 255, 255, 0.04);
+}
+
+.battery-widget-icon {
+	min-width: 7ch;
+	text-align: center;
+	font-weight: 700;
+	letter-spacing: 0.08ch;
+}
+
+.battery-widget-text {
+	font-weight: 500;
+}
+
+.battery-widget-normal {
+	background-color: rgba(120, 120, 120, 0.18);
+}
+
+.battery-widget-full {
+	background-color: rgba(76, 129, 76, 0.24);
+}
+
+.battery-widget-full .battery-widget-icon {
+	color: #bdf5bd;
+}
+
+.battery-widget-charging {
+	background-color: rgba(76, 129, 76, 0.28);
+}
+
+.battery-widget-charging .battery-widget-icon {
+	color: #9df19d;
+	animation: battery-charge-glow 1.4s ease-in-out infinite;
+}
+
+.battery-widget-low {
+	background-color: rgba(148, 61, 61, 0.28);
+}
+
+.battery-widget-low .battery-widget-icon {
+	color: #ff8585;
+	animation: battery-low-blink 1s steps(2, start) infinite;
+}
+
+.battery-widget-external {
+	background-color: rgba(100, 100, 100, 0.18);
+}
+
+.battery-widget-external .battery-widget-icon {
+	color: #d7d7d7;
+}
+
+@keyframes battery-charge-glow {
+	0% {
+		opacity: 0.7;
+		transform: translateX(0);
+	}
+
+	50% {
+		opacity: 1;
+		transform: translateX(1px);
+	}
+
+	100% {
+		opacity: 0.7;
+		transform: translateX(0);
+	}
+}
+
+@keyframes battery-low-blink {
+	0% {
+		opacity: 1;
+	}
+
+	49% {
+		opacity: 1;
+	}
+
+	50% {
+		opacity: 0.4;
+	}
+
+	100% {
+		opacity: 0.4;
+	}
+}

src/bar/bar.cpp

@@ -38,6 +38,7 @@ Bar::Bar(GdkMonitor *monitor, int monitorId)
     this->volumeWidget       = Gtk::make_managed<VolumeWidget>();
     this->workspaceIndicator = Gtk::make_managed<WorkspaceIndicator>(monitorId);
     this->trayWidget         = Gtk::make_managed<TrayWidget>();
+    this->batteryWidget      = Gtk::make_managed<BatteryWidget>();
 
     load_css();
     setup_ui();
@@ -77,6 +78,7 @@ void Bar::setup_center_box() {
 
 void Bar::setup_right_box() {
     right_box.append(*this->trayWidget);
+    right_box.append(*this->batteryWidget);
     right_box.append(this->homeAssistant);
     right_box.append(this->controlCenter);
 }

src/widgets/battery.cpp

@@ -0,0 +1,219 @@
+#include "widgets/battery.hpp"
+
+#include <algorithm>
+#include <cctype>
+#include <filesystem>
+#include <fstream>
+#include <string>
+
+#include <glibmm/main.h>
+#include <sigc++/functors/mem_fun.h>
+
+namespace {
+std::string trim(const std::string &value) {
+    const auto start = value.find_first_not_of(" \t\n\r");
+    if (start == std::string::npos) {
+        return "";
+    }
+
+    const auto end = value.find_last_not_of(" \t\n\r");
+    return value.substr(start, end - start + 1);
+}
+}
+
+BatteryWidget::BatteryWidget() : Gtk::Box(Gtk::Orientation::HORIZONTAL) {
+    set_valign(Gtk::Align::CENTER);
+    set_halign(Gtk::Align::CENTER);
+    set_spacing(6);
+    add_css_class("battery-widget");
+
+    iconLabel.set_halign(Gtk::Align::CENTER);
+    iconLabel.set_valign(Gtk::Align::CENTER);
+    iconLabel.set_width_chars(7);
+    iconLabel.set_text("[     ]");
+    iconLabel.add_css_class("battery-widget-icon");
+
+    append(iconLabel);
+
+    label.set_halign(Gtk::Align::CENTER);
+    label.set_valign(Gtk::Align::CENTER);
+    label.set_width_chars(5);
+    label.set_text("--%");
+    label.add_css_class("battery-widget-text");
+
+    append(label);
+
+    update();
+
+    timeoutConn = Glib::signal_timeout().connect(
+        sigc::mem_fun(*this, &BatteryWidget::on_timeout), 100);
+}
+
+BatteryWidget::~BatteryWidget() {
+    if (timeoutConn.connected()) {
+        timeoutConn.disconnect();
+    }
+}
+
+void BatteryWidget::find_battery_path() {
+    constexpr auto base = "/sys/class/power_supply";
+
+    batteryPath.clear();
+
+    if (!std::filesystem::exists(base)) {
+        return;
+    }
+
+    for (const auto &entry : std::filesystem::directory_iterator(base)) {
+        if (!entry.is_directory()) {
+            continue;
+        }
+
+        std::ifstream typeFile(entry.path() / "type");
+        if (!typeFile) {
+            continue;
+        }
+
+        std::string type;
+        std::getline(typeFile, type);
+        type = trim(type);
+        std::transform(type.begin(), type.end(), type.begin(), [](unsigned char ch) {
+            return static_cast<char>(std::toupper(ch));
+        });
+
+        if (type == "BATTERY") {
+            batteryPath = entry.path();
+            break;
+        }
+    }
+}
+
+void BatteryWidget::update() {
+    try {
+        if (batteryPath.empty() || !std::filesystem::exists(batteryPath)) {
+            find_battery_path();
+        }
+
+        const bool hasBattery = !batteryPath.empty();
+
+        int capacity = -1;
+        std::string status;
+        if (hasBattery) {
+            std::ifstream capacityFile(batteryPath / "capacity");
+            if (capacityFile) {
+                capacityFile >> capacity;
+            }
+
+            std::ifstream statusFile(batteryPath / "status");
+            if (statusFile) {
+                std::getline(statusFile, status);
+            }
+        }
+
+        status = trim(status);
+
+        const bool charging = status == "Charging";
+        const bool full = hasBattery && (status == "Full" || (capacity >= 95));
+        const bool low = (capacity >= 0 && capacity < 20 && !charging);
+
+        std::string stateClass;
+        if (!hasBattery) {
+            stateClass = "battery-widget-external";
+        } else if (charging) {
+            stateClass = "battery-widget-charging";
+        } else if (low) {
+            stateClass = "battery-widget-low";
+        } else if (full) {
+            stateClass = "battery-widget-full";
+        } else {
+            stateClass = "battery-widget-normal";
+        }
+
+        set_state_class(stateClass);
+
+        iconLabel.set_text(build_icon(capacity, hasBattery, charging, full));
+        label.set_text(build_text(capacity, status, hasBattery, charging, full));
+    } catch (...) {
+        set_state_class("battery-widget-normal");
+        iconLabel.set_text("[???]");
+        label.set_text("??%");
+    }
+}
+
+bool BatteryWidget::on_timeout() {
+    update();
+    return true;
+}
+
+void BatteryWidget::set_state_class(const std::string &stateClass) {
+    if (currentStateClass == stateClass) {
+        return;
+    }
+
+    if (!currentStateClass.empty()) {
+        remove_css_class(currentStateClass);
+    }
+
+    currentStateClass = stateClass;
+
+    if (!currentStateClass.empty()) {
+        add_css_class(currentStateClass);
+    }
+}
+
+std::string BatteryWidget::build_icon(int capacity, bool hasBattery, bool charging, bool full) const {
+    if (!hasBattery) {
+        return "<AC>";
+    }
+
+    static constexpr int segments = 5;
+    const int clampedCapacity = std::clamp(capacity, 0, 100);
+    int filledSegments = (clampedCapacity * segments + 99) / 100;
+
+    if (full) {
+        filledSegments = segments;
+    }
+
+    std::string icon = "[";
+    for (int i = 0; i < segments; ++i) {
+        icon += (i < filledSegments) ? '=' : ' ';
+    }
+    icon += ']';
+
+    if (charging) {
+        icon += '>';
+    } else if (clampedCapacity <= 5) {
+        icon += '!';
+    } else {
+        icon += ' ';
+    }
+
+    return icon;
+}
+
+std::string BatteryWidget::build_text(int capacity, const std::string &status, bool hasBattery, bool charging, bool full) const {
+    if (!hasBattery) {
+        return "AC";
+    }
+
+    if (capacity >= 0) {
+        std::string text;
+        if (full && capacity >= 99) {
+            text = "100%";
+        } else {
+            text = std::to_string(std::clamp(capacity, 0, 100)) + "%";
+        }
+
+        if (charging && capacity < 100) {
+            text.insert(text.begin(), '+');
+        }
+
+        return text;
+    }
+
+    if (!status.empty()) {
+        return status;
+    }
+
+    return "?%";
+}