Wladimir J. van der Laan
13 years ago
6 changed files with 337 additions and 29 deletions
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#include "notificator.h" |
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#include <QMetaType> |
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#include <QVariant> |
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#include <QIcon> |
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#include <QApplication> |
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#include <QStyle> |
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#include <QByteArray> |
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#include <QSystemTrayIcon> |
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#include <QMessageBox> |
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#ifdef QT_DBUS |
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#include <QtDBus/QtDBus> |
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#include <stdint.h> |
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#endif |
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// https://wiki.ubuntu.com/NotificationDevelopmentGuidelines recommends at least 128
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const int FREEDESKTOP_NOTIFICATION_ICON_SIZE = 128; |
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Notificator::Notificator(const QString &programName, QSystemTrayIcon *trayicon, QWidget *parent): |
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QObject(parent), |
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parent(parent), |
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programName(programName), |
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mode(None), |
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trayIcon(trayicon) |
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#ifdef QT_DBUS |
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,interface(0) |
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#endif |
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{ |
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if(trayicon && trayicon->supportsMessages()) |
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{ |
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mode = QSystemTray; |
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} |
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#ifdef QT_DBUS |
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interface = new QDBusInterface("org.freedesktop.Notifications", |
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"/org/freedesktop/Notifications", "org.freedesktop.Notifications"); |
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if(interface->isValid()) |
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{ |
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mode = Freedesktop; |
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} |
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#endif |
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} |
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Notificator::~Notificator() |
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{ |
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#ifdef QT_DBUS |
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delete interface; |
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#endif |
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} |
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#ifdef QT_DBUS |
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// Loosely based on http://www.qtcentre.org/archive/index.php/t-25879.html
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class FreedesktopImage |
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{ |
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public: |
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FreedesktopImage() {} |
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FreedesktopImage(const QImage &img); |
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static int metaType(); |
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// Image to variant that can be marshaled over DBus
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static QVariant toVariant(const QImage &img); |
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private: |
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int width, height, stride; |
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bool hasAlpha; |
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int channels; |
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int bitsPerSample; |
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QByteArray image; |
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friend QDBusArgument &operator<<(QDBusArgument &a, const FreedesktopImage &i); |
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friend const QDBusArgument &operator>>(const QDBusArgument &a, FreedesktopImage &i); |
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}; |
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Q_DECLARE_METATYPE(FreedesktopImage); |
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// Image configuration settings
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const int CHANNELS = 4; |
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const int BYTES_PER_PIXEL = 4; |
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const int BITS_PER_SAMPLE = 8; |
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FreedesktopImage::FreedesktopImage(const QImage &img): |
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width(img.width()), |
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height(img.height()), |
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stride(img.width() * BYTES_PER_PIXEL), |
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hasAlpha(true), |
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channels(CHANNELS), |
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bitsPerSample(BITS_PER_SAMPLE) |
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{ |
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// Convert 00xAARRGGBB to RGBA bytewise (endian-independent) format
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QImage tmp = img.convertToFormat(QImage::Format_ARGB32); |
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const uint32_t *data = reinterpret_cast<const uint32_t*>(tmp.constBits()); |
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unsigned int num_pixels = width * height; |
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image.resize(num_pixels * BYTES_PER_PIXEL); |
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for(unsigned int ptr = 0; ptr < num_pixels; ++ptr) |
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{ |
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image[ptr*BYTES_PER_PIXEL+0] = data[ptr] >> 16; // R
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image[ptr*BYTES_PER_PIXEL+1] = data[ptr] >> 8; // G
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image[ptr*BYTES_PER_PIXEL+2] = data[ptr]; // B
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image[ptr*BYTES_PER_PIXEL+3] = data[ptr] >> 24; // A
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} |
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} |
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QDBusArgument &operator<<(QDBusArgument &a, const FreedesktopImage &i) |
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{ |
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a.beginStructure(); |
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a << i.width << i.height << i.stride << i.hasAlpha << i.bitsPerSample << i.channels << i.image; |
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a.endStructure(); |
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return a; |
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} |
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const QDBusArgument &operator>>(const QDBusArgument &a, FreedesktopImage &i) |
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{ |
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a.beginStructure(); |
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a >> i.width >> i.height >> i.stride >> i.hasAlpha >> i.bitsPerSample >> i.channels >> i.image; |
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a.endStructure(); |
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return a; |
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} |
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int FreedesktopImage::metaType() |
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{ |
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return qDBusRegisterMetaType<FreedesktopImage>(); |
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} |
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QVariant FreedesktopImage::toVariant(const QImage &img) |
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{ |
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FreedesktopImage fimg(img); |
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return QVariant(FreedesktopImage::metaType(), &fimg); |
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} |
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void Notificator::notifyDBus(Class cls, const QString &title, const QString &text, const QIcon &icon, int millisTimeout) |
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{ |
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Q_UNUSED(cls); |
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// Arguments for DBus call:
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QList<QVariant> args; |
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// Program Name:
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args.append(programName); |
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// Unique ID of this notification type:
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args.append(0U); |
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// Application Icon, empty string
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args.append(QString()); |
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// Summary
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args.append(title); |
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// Body
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args.append(text); |
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// Actions (none, actions are deprecated)
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QStringList actions; |
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args.append(actions); |
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// Hints
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QVariantMap hints; |
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// If no icon specified, set icon based on class
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QIcon tmpicon; |
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if(icon.isNull()) |
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{ |
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QStyle::StandardPixmap sicon = QStyle::SP_MessageBoxQuestion; |
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switch(cls) |
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{ |
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case Information: sicon = QStyle::SP_MessageBoxInformation; break; |
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case Warning: sicon = QStyle::SP_MessageBoxWarning; break; |
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case Critical: sicon = QStyle::SP_MessageBoxCritical; break; |
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default: break; |
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} |
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tmpicon = QApplication::style()->standardIcon(sicon); |
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} |
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else |
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{ |
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tmpicon = icon; |
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} |
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hints["icon_data"] = FreedesktopImage::toVariant(tmpicon.pixmap(FREEDESKTOP_NOTIFICATION_ICON_SIZE).toImage()); |
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args.append(hints); |
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// Timeout (in msec)
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args.append(millisTimeout); |
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// "Fire and forget"
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interface->callWithArgumentList(QDBus::NoBlock, "Notify", args); |
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} |
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#endif |
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void Notificator::notifySystray(Class cls, const QString &title, const QString &text, const QIcon &icon, int millisTimeout) |
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{ |
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Q_UNUSED(icon); |
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QSystemTrayIcon::MessageIcon sicon = QSystemTrayIcon::NoIcon; |
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switch(cls) // Set icon based on class
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{ |
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case Information: sicon = QSystemTrayIcon::Information; break; |
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case Warning: sicon = QSystemTrayIcon::Warning; break; |
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case Critical: sicon = QSystemTrayIcon::Critical; break; |
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} |
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trayIcon->showMessage(title, text, sicon, millisTimeout); |
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} |
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void Notificator::notify(Class cls, const QString &title, const QString &text, const QIcon &icon, int millisTimeout) |
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{ |
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switch(mode) |
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{ |
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#ifdef QT_DBUS |
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case Freedesktop: |
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notifyDBus(cls, title, text, icon, millisTimeout); |
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break; |
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#endif |
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case QSystemTray: |
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notifySystray(cls, title, text, icon, millisTimeout); |
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break; |
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default: |
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if(cls == Critical) |
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{ |
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// Fall back to old fashioned popup dialog if critical and no other notification available
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QMessageBox::critical(parent, title, text, QMessageBox::Ok, QMessageBox::Ok); |
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} |
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break; |
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} |
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} |
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@ -0,0 +1,63 @@
@@ -0,0 +1,63 @@
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#ifndef NOTIFICATOR_H |
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#define NOTIFICATOR_H |
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#include <QObject> |
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#include <QIcon> |
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QT_BEGIN_NAMESPACE |
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class QSystemTrayIcon; |
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#ifdef QT_DBUS |
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class QDBusInterface; |
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#endif |
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QT_END_NAMESPACE |
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// Cross-platform desktop notification client
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class Notificator: public QObject |
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{ |
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Q_OBJECT |
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public: |
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// Create a new notificator
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// Ownership of trayIcon is not transferred to this object
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Notificator(const QString &programName=QString(), QSystemTrayIcon *trayIcon=0, QWidget *parent=0); |
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~Notificator(); |
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// Message class
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enum Class |
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{ |
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Information, |
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Warning, |
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Critical, |
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}; |
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public slots: |
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/* Show notification message.
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* |
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* cls: general message class |
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* title: title shown with message |
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* text: message content |
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* icon: optional icon to show with message |
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* millisTimeout: notification timeout in milliseconds (default 10 seconds) |
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*/ |
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void notify(Class cls, const QString &title, const QString &text, |
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const QIcon &icon = QIcon(), int millisTimeout = 10000); |
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private: |
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QWidget *parent; |
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enum Mode { |
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None, |
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Freedesktop, // Use DBus org.freedesktop.Notifications
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QSystemTray, // Use QSystemTray::showMessage
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}; |
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QString programName; |
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Mode mode; |
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QSystemTrayIcon *trayIcon; |
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#ifdef QT_DBUS |
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QDBusInterface *interface; |
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void notifyDBus(Class cls, const QString &title, const QString &text, const QIcon &icon, int millisTimeout); |
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#endif |
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void notifySystray(Class cls, const QString &title, const QString &text, const QIcon &icon, int millisTimeout); |
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}; |
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#endif // NOTIFICATOR_H
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