quickshell/src/core/clock.hpp

91 lines
2.9 KiB
C++

#pragma once
#include <qdatetime.h>
#include <qobject.h>
#include <qqmlintegration.h>
#include <qtimer.h>
#include <qtmetamacros.h>
#include <qtypes.h>
///! System clock accessor.
/// SystemClock is a view into the system's clock.
/// It updates at hour, minute, or second intervals depending on @@precision.
///
/// # Examples
/// ```qml
/// SystemClock {
/// id: clock
/// precision: SystemClock.Seconds
/// }
///
/// @@QtQuick.Text {
/// text: Qt.formatDateTime(clock.date, "hh:mm:ss - yyyy-MM-dd")
/// }
/// ```
///
/// > [!WARNING] Clock updates will trigger within 50ms of the system clock changing,
/// > however this can be either before or after the clock changes (+-50ms). If you
/// > need a date object, use @@date instead of constructing a new one, or the time
/// > of the constructed object could be off by up to a second.
class SystemClock: public QObject {
Q_OBJECT;
/// If the clock should update. Defaults to true.
///
/// Setting enabled to false pauses the clock.
Q_PROPERTY(bool enabled READ enabled WRITE setEnabled NOTIFY enabledChanged);
/// The precision the clock should measure at. Defaults to `SystemClock.Seconds`.
Q_PROPERTY(SystemClock::Enum precision READ precision WRITE setPrecision NOTIFY precisionChanged);
/// The current date and time.
///
/// > [!TIP] You can use @@QtQml.Qt.formatDateTime() to get the time as a string in
/// > your format of choice.
Q_PROPERTY(QDateTime date READ date NOTIFY dateChanged);
/// The current hour.
Q_PROPERTY(quint32 hours READ hours NOTIFY dateChanged);
/// The current minute, or 0 if @@precision is `SystemClock.Hours`.
Q_PROPERTY(quint32 minutes READ minutes NOTIFY dateChanged);
/// The current second, or 0 if @@precision is `SystemClock.Hours` or `SystemClock.Minutes`.
Q_PROPERTY(quint32 seconds READ seconds NOTIFY dateChanged);
QML_ELEMENT;
public:
// must be named enum until docgen is ready to handle member enums better
enum Enum : quint8 {
Hours = 1,
Minutes = 2,
Seconds = 3,
};
Q_ENUM(Enum);
explicit SystemClock(QObject* parent = nullptr);
[[nodiscard]] bool enabled() const;
void setEnabled(bool enabled);
[[nodiscard]] SystemClock::Enum precision() const;
void setPrecision(SystemClock::Enum precision);
[[nodiscard]] QDateTime date() const { return this->currentTime; }
[[nodiscard]] quint32 hours() const { return this->currentTime.time().hour(); }
[[nodiscard]] quint32 minutes() const { return this->currentTime.time().minute(); }
[[nodiscard]] quint32 seconds() const { return this->currentTime.time().second(); }
signals:
void enabledChanged();
void precisionChanged();
void dateChanged();
private slots:
void onTimeout();
private:
bool mEnabled = true;
SystemClock::Enum mPrecision = SystemClock::Seconds;
QTimer timer;
QDateTime currentTime;
QDateTime targetTime;
void update();
void setTime(const QDateTime& targetTime);
void schedule(const QDateTime& targetTime);
};