initial commit

.gitignore

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+# CMake build directories
+build/
+cmake-build-*/
+
+# CMake generated files
+CMakeCache.txt
+CMakeFiles/
+cmake_install.cmake
+Makefile
+compile_commands.json
+
+# Qt generated files
+.qmlcache/
+.qtc_clangd/
+*.qmlc
+*.jsc
+
+# IDE/editor junk
+.vscode/
+.idea/
+*.user
+*.user.*
+
+# Temporary files
+*~
+*.swp
+*.swo
+
+# Misc
+.DS_Store

CMakeLists.txt

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+cmake_minimum_required(VERSION 3.16)
+
+project(bottomdash VERSION 0.1 LANGUAGES CXX)
+
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+find_package(Qt6 REQUIRED COMPONENTS Quick)
+
+qt_standard_project_setup(REQUIRES 6.8)
+
+qt_add_executable(bottomdash
+    main.cpp
+    SystemInfo.cpp
+    SystemInfo.h
+)
+
+qt_add_qml_module(bottomdash
+    URI BottomDash
+    VERSION 1.0
+    QML_FILES
+        Main.qml
+)
+
+target_link_libraries(bottomdash
+    PRIVATE Qt6::Quick
+)

Main.qml

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+import QtQuick
+import QtQuick.Window
+
+Window {
+    id: root
+
+    width: 1240
+    height: 1080
+    visible: true
+
+    flags: Qt.FramelessWindowHint
+    color: "#000000"
+
+    // ─────────────────────────────────────────────────────────────
+    // Clock
+    // ─────────────────────────────────────────────────────────────
+
+    property date currentTime: new Date()
+
+    Timer {
+        interval: 1000
+        running: true
+        repeat: true
+
+        onTriggered: root.currentTime = new Date()
+    }
+
+    Text {
+        id: clock
+
+        anchors {
+            top: parent.top
+            left: parent.left
+            topMargin: 40
+            leftMargin: 48
+        }
+
+        text: Qt.formatTime(root.currentTime, "h:mm AP")
+
+        color: "#ffffff"
+
+        font {
+            pixelSize: 64
+            weight: Font.Medium
+        }
+    }
+
+
+    // ─────────────────────────────────────────────────────────────
+    // Battery
+    //
+    // Fake percentage for the moment. We'll connect this to
+    // /sys/class/power_supply from C++ next.
+    // ─────────────────────────────────────────────────────────────
+
+    property int batteryPercent: systemInfo.batteryPercent
+
+    Item {
+        id: battery
+
+        width: batteryIcon.width + 18 + batteryText.width
+        height: 72
+
+        anchors {
+            top: parent.top
+            right: parent.right
+            topMargin: 40
+            rightMargin: 48
+        }
+
+        // Battery body
+        Rectangle {
+            id: batteryIcon
+
+            width: 72
+            height: 38
+
+            anchors.verticalCenter: parent.verticalCenter
+
+            color: "transparent"
+            border {
+                width: 4
+                color: "#ffffff"
+            }
+
+            radius: 5
+
+            // Battery fill
+            Rectangle {
+                anchors {
+                    left: parent.left
+                    top: parent.top
+                    bottom: parent.bottom
+
+                    leftMargin: 7
+                    topMargin: 7
+                    bottomMargin: 7
+                }
+
+                width: Math.max(
+                    0,
+                    (parent.width - 14) *
+                    root.batteryPercent / 100
+                )
+
+                color: {
+                    if (root.batteryPercent <= 15)
+                        return "#ff453a"
+
+                    if (root.batteryPercent <= 35)
+                        return "#ffd60a"
+
+                    return "#32d74b"
+                }
+
+                radius: 2
+            }
+
+            // Battery terminal
+            Rectangle {
+                width: 7
+                height: 18
+
+                anchors {
+                    left: parent.right
+                    verticalCenter: parent.verticalCenter
+                }
+
+                color: "#ffffff"
+
+                topRightRadius: 3
+                bottomRightRadius: 3
+            }
+        }
+
+        Text {
+            id: batteryText
+
+            anchors {
+                left: batteryIcon.right
+                leftMargin: 18
+                verticalCenter: parent.verticalCenter
+            }
+
+            text: root.batteryPercent + "%"
+
+            color: "#ffffff"
+
+            font {
+                pixelSize: 64
+                weight: Font.Medium
+            }
+        }
+    }
+}

SystemInfo.cpp

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+#include "SystemInfo.h"
+
+#include <QDir>
+#include <QFile>
+#include <QTextStream>
+
+SystemInfo::SystemInfo(QObject *parent)
+    : QObject(parent)
+{
+    m_capacityPath = findBatteryCapacityPath();
+
+    updateBattery();
+
+    connect(&m_batteryTimer,
+            &QTimer::timeout,
+            this,
+            &SystemInfo::updateBattery);
+
+    // Battery percentage doesn't need millisecond precision.
+    m_batteryTimer.start(10000);
+}
+
+int SystemInfo::batteryPercent() const
+{
+    return m_batteryPercent;
+}
+
+QString SystemInfo::findBatteryCapacityPath() const
+{
+    QDir powerSupply("/sys/class/power_supply");
+
+    const QStringList devices =
+        powerSupply.entryList(QDir::Dirs | QDir::NoDotAndDotDot);
+
+    for (const QString &device : devices) {
+        const QString base =
+            powerSupply.absoluteFilePath(device);
+
+        QFile typeFile(base + "/type");
+
+        if (!typeFile.open(QIODevice::ReadOnly | QIODevice::Text))
+            continue;
+
+        const QString type =
+            QString::fromUtf8(typeFile.readAll()).trimmed();
+
+        if (type != "Battery")
+            continue;
+
+        const QString capacityPath = base + "/capacity";
+
+        if (QFile::exists(capacityPath))
+            return capacityPath;
+    }
+
+    return {};
+}
+
+void SystemInfo::updateBattery()
+{
+    if (m_capacityPath.isEmpty())
+        m_capacityPath = findBatteryCapacityPath();
+
+    if (m_capacityPath.isEmpty())
+        return;
+
+    QFile capacityFile(m_capacityPath);
+
+    if (!capacityFile.open(QIODevice::ReadOnly | QIODevice::Text))
+        return;
+
+    bool ok = false;
+
+    int percent =
+        QString::fromUtf8(capacityFile.readAll())
+            .trimmed()
+            .toInt(&ok);
+
+    if (!ok)
+        return;
+
+    percent = qBound(0, percent, 100);
+
+    if (percent == m_batteryPercent)
+        return;
+
+    m_batteryPercent = percent;
+    emit batteryPercentChanged();
+}

SystemInfo.h

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+#pragma once
+
+#include <QObject>
+#include <QTimer>
+#include <QString>
+
+class SystemInfo : public QObject
+{
+    Q_OBJECT
+    Q_PROPERTY(int batteryPercent
+               READ batteryPercent
+               NOTIFY batteryPercentChanged)
+
+public:
+    explicit SystemInfo(QObject *parent = nullptr);
+
+    int batteryPercent() const;
+
+signals:
+    void batteryPercentChanged();
+
+private slots:
+    void updateBattery();
+
+private:
+    QString findBatteryCapacityPath() const;
+
+    int m_batteryPercent = -1;
+    QString m_capacityPath;
+    QTimer m_batteryTimer;
+};

main.cpp

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+#include <QGuiApplication>
+#include <QQmlApplicationEngine>
+#include <QQmlContext>
+
+#include "SystemInfo.h"
+
+int main(int argc, char *argv[])
+{
+    QGuiApplication app(argc, argv);
+
+    SystemInfo systemInfo;
+
+    QQmlApplicationEngine engine;
+
+    engine.rootContext()->setContextProperty(
+        "systemInfo",
+        &systemInfo
+    );
+
+    engine.loadFromModule("BottomDash", "Main");
+
+    if (engine.rootObjects().isEmpty())
+        return -1;
+
+    return app.exec();
+}