diff options
Diffstat (limited to 'src/qt/notificator.cpp')
| -rw-r--r-- | src/qt/notificator.cpp | 224 |
1 files changed, 224 insertions, 0 deletions
diff --git a/src/qt/notificator.cpp b/src/qt/notificator.cpp new file mode 100644 index 0000000000..86ccfc8541 --- /dev/null +++ b/src/qt/notificator.cpp @@ -0,0 +1,224 @@ +#include "notificator.h" + +#include <QMetaType> +#include <QVariant> +#include <QIcon> +#include <QApplication> +#include <QStyle> +#include <QByteArray> +#include <QSystemTrayIcon> +#include <QMessageBox> + +#ifdef QT_DBUS +#include <QtDBus/QtDBus> +#include <stdint.h> +#endif + +// https://wiki.ubuntu.com/NotificationDevelopmentGuidelines recommends at least 128 +const int FREEDESKTOP_NOTIFICATION_ICON_SIZE = 128; + +Notificator::Notificator(const QString &programName, QSystemTrayIcon *trayicon, QWidget *parent): + QObject(parent), + parent(parent), + programName(programName), + mode(None), + trayIcon(trayicon) +#ifdef QT_DBUS + ,interface(0) +#endif +{ + if(trayicon && trayicon->supportsMessages()) + { + mode = QSystemTray; + } +#ifdef QT_DBUS + interface = new QDBusInterface("org.freedesktop.Notifications", + "/org/freedesktop/Notifications", "org.freedesktop.Notifications"); + if(interface->isValid()) + { + mode = Freedesktop; + } +#endif +} + +Notificator::~Notificator() +{ +#ifdef QT_DBUS + delete interface; +#endif +} + +#ifdef QT_DBUS + +// Loosely based on http://www.qtcentre.org/archive/index.php/t-25879.html +class FreedesktopImage +{ +public: + FreedesktopImage() {} + FreedesktopImage(const QImage &img); + + static int metaType(); + + // Image to variant that can be marshaled over DBus + static QVariant toVariant(const QImage &img); + +private: + int width, height, stride; + bool hasAlpha; + int channels; + int bitsPerSample; + QByteArray image; + + friend QDBusArgument &operator<<(QDBusArgument &a, const FreedesktopImage &i); + friend const QDBusArgument &operator>>(const QDBusArgument &a, FreedesktopImage &i); +}; + +Q_DECLARE_METATYPE(FreedesktopImage); + +// Image configuration settings +const int CHANNELS = 4; +const int BYTES_PER_PIXEL = 4; +const int BITS_PER_SAMPLE = 8; + +FreedesktopImage::FreedesktopImage(const QImage &img): + width(img.width()), + height(img.height()), + stride(img.width() * BYTES_PER_PIXEL), + hasAlpha(true), + channels(CHANNELS), + bitsPerSample(BITS_PER_SAMPLE) +{ + // Convert 00xAARRGGBB to RGBA bytewise (endian-independent) format + QImage tmp = img.convertToFormat(QImage::Format_ARGB32); + const uint32_t *data = reinterpret_cast<const uint32_t*>(tmp.constBits()); + + unsigned int num_pixels = width * height; + image.resize(num_pixels * BYTES_PER_PIXEL); + + for(unsigned int ptr = 0; ptr < num_pixels; ++ptr) + { + image[ptr*BYTES_PER_PIXEL+0] = data[ptr] >> 16; // R + image[ptr*BYTES_PER_PIXEL+1] = data[ptr] >> 8; // G + image[ptr*BYTES_PER_PIXEL+2] = data[ptr]; // B + image[ptr*BYTES_PER_PIXEL+3] = data[ptr] >> 24; // A + } +} + +QDBusArgument &operator<<(QDBusArgument &a, const FreedesktopImage &i) +{ + a.beginStructure(); + a << i.width << i.height << i.stride << i.hasAlpha << i.bitsPerSample << i.channels << i.image; + a.endStructure(); + return a; +} + +const QDBusArgument &operator>>(const QDBusArgument &a, FreedesktopImage &i) +{ + a.beginStructure(); + a >> i.width >> i.height >> i.stride >> i.hasAlpha >> i.bitsPerSample >> i.channels >> i.image; + a.endStructure(); + return a; +} + +int FreedesktopImage::metaType() +{ + return qDBusRegisterMetaType<FreedesktopImage>(); +} + +QVariant FreedesktopImage::toVariant(const QImage &img) +{ + FreedesktopImage fimg(img); + return QVariant(FreedesktopImage::metaType(), &fimg); +} + +void Notificator::notifyDBus(Class cls, const QString &title, const QString &text, const QIcon &icon, int millisTimeout) +{ + Q_UNUSED(cls); + // Arguments for DBus call: + QList<QVariant> args; + + // Program Name: + args.append(programName); + + // Unique ID of this notification type: + args.append(0U); + + // Application Icon, empty string + args.append(QString()); + + // Summary + args.append(title); + + // Body + args.append(text); + + // Actions (none, actions are deprecated) + QStringList actions; + args.append(actions); + + // Hints + QVariantMap hints; + + // If no icon specified, set icon based on class + QIcon tmpicon; + if(icon.isNull()) + { + QStyle::StandardPixmap sicon = QStyle::SP_MessageBoxQuestion; + switch(cls) + { + case Information: sicon = QStyle::SP_MessageBoxInformation; break; + case Warning: sicon = QStyle::SP_MessageBoxWarning; break; + case Critical: sicon = QStyle::SP_MessageBoxCritical; break; + default: break; + } + tmpicon = QApplication::style()->standardIcon(sicon); + } + else + { + tmpicon = icon; + } + hints["icon_data"] = FreedesktopImage::toVariant(tmpicon.pixmap(FREEDESKTOP_NOTIFICATION_ICON_SIZE).toImage()); + args.append(hints); + + // Timeout (in msec) + args.append(millisTimeout); + + // "Fire and forget" + interface->callWithArgumentList(QDBus::NoBlock, "Notify", args); +} +#endif + +void Notificator::notifySystray(Class cls, const QString &title, const QString &text, const QIcon &icon, int millisTimeout) +{ + Q_UNUSED(icon); + QSystemTrayIcon::MessageIcon sicon = QSystemTrayIcon::NoIcon; + switch(cls) // Set icon based on class + { + case Information: sicon = QSystemTrayIcon::Information; break; + case Warning: sicon = QSystemTrayIcon::Warning; break; + case Critical: sicon = QSystemTrayIcon::Critical; break; + } + trayIcon->showMessage(title, text, sicon, millisTimeout); +} + +void Notificator::notify(Class cls, const QString &title, const QString &text, const QIcon &icon, int millisTimeout) +{ + switch(mode) + { +#ifdef QT_DBUS + case Freedesktop: + notifyDBus(cls, title, text, icon, millisTimeout); + break; +#endif + case QSystemTray: + notifySystray(cls, title, text, icon, millisTimeout); + break; + default: + if(cls == Critical) + { + // Fall back to old fashioned popup dialog if critical and no other notification available + QMessageBox::critical(parent, title, text, QMessageBox::Ok, QMessageBox::Ok); + } + break; + } +} |