aboutsummaryrefslogtreecommitdiff
path: root/src/qt/notificator.cpp
blob: 5e9969bf9e52512808c8a24a579a34f067b96b9b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
#include "notificator.h"

#include <QtGlobal>
#include <QMetaType>
#include <QVariant>
#include <QIcon>
#include <QApplication>
#include <QStyle>
#include <QByteArray>
#include <QSystemTrayIcon>
#include <QMessageBox>
#include <QTemporaryFile>
#include <QImageWriter>

#ifdef USE_DBUS
#include <QtDBus/QtDBus>
#include <stdint.h>
#endif

#ifdef Q_WS_MAC
#include <ApplicationServices/ApplicationServices.h>
extern bool qt_mac_execute_apple_script(const QString &script, AEDesc *ret);
#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 USE_DBUS
    ,interface(0)
#endif
{
    if(trayicon && trayicon->supportsMessages())
    {
        mode = QSystemTray;
    }
#ifdef USE_DBUS
    interface = new QDBusInterface("org.freedesktop.Notifications",
          "/org/freedesktop/Notifications", "org.freedesktop.Notifications");
    if(interface->isValid())
    {
        mode = Freedesktop;
    }
#endif
#ifdef Q_WS_MAC
    // Check if Growl is installed (based on Qt's tray icon implementation)
    CFURLRef cfurl;
    OSStatus status = LSGetApplicationForInfo(kLSUnknownType, kLSUnknownCreator, CFSTR("growlTicket"), kLSRolesAll, 0, &cfurl);
    if (status != kLSApplicationNotFoundErr) {
        CFBundleRef bundle = CFBundleCreate(0, cfurl);
        CFRelease(cfurl);
        if (CFStringCompare(CFBundleGetIdentifier(bundle), CFSTR("com.Growl.GrowlHelperApp"), kCFCompareCaseInsensitive | kCFCompareBackwards) == kCFCompareEqualTo) {
            mode = Growl;
        }
        CFRelease(bundle);
    }
#endif
}

Notificator::~Notificator()
{
#ifdef USE_DBUS
    delete interface;
#endif
}

#ifdef USE_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);
}

// Based on Qt's tray icon implementation
#ifdef Q_WS_MAC
void Notificator::notifyGrowl(Class cls, const QString &title, const QString &text, const QIcon &icon)
{
    const QString script(
        "tell application \"GrowlHelperApp\"\n"
        "  set the allNotificationsList to {\"Notification\"}\n" // -- Make a list of all the notification types (all)
        "  set the enabledNotificationsList to {\"Notification\"}\n" // -- Make a list of the notifications (enabled)
        "  register as application \"%1\" all notifications allNotificationsList default notifications enabledNotificationsList\n" // -- Register our script with Growl
        "  notify with name \"Notification\" title \"%2\" description \"%3\" application name \"%1\"%4\n" // -- Send a Notification
        "end tell"
    );

    QString notificationApp(QApplication::applicationName());
    if (notificationApp.isEmpty())
        notificationApp = "Application";

    QPixmap notificationIconPixmap;
    if (icon.isNull()) { // If no icon specified, set icon based on class
        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;
        }
        notificationIconPixmap = QApplication::style()->standardPixmap(sicon);
    }
    else {
        QSize size = icon.actualSize(QSize(48, 48));
        notificationIconPixmap = icon.pixmap(size);
    }

    QString notificationIcon;
    QTemporaryFile notificationIconFile;
    if (!notificationIconPixmap.isNull() && notificationIconFile.open()) {
        QImageWriter writer(&notificationIconFile, "PNG");
        if (writer.write(notificationIconPixmap.toImage()))
            notificationIcon = QString(" image from location \"file://%1\"").arg(notificationIconFile.fileName());
    }

    QString quotedTitle(title), quotedText(text);
    quotedTitle.replace("\\", "\\\\").replace("\"", "\\");
    quotedText.replace("\\", "\\\\").replace("\"", "\\");
    qt_mac_execute_apple_script(script.arg(notificationApp, quotedTitle, quotedText, notificationIcon), 0);
}
#endif

void Notificator::notify(Class cls, const QString &title, const QString &text, const QIcon &icon, int millisTimeout)
{
    switch(mode)
    {
#ifdef USE_DBUS
    case Freedesktop:
        notifyDBus(cls, title, text, icon, millisTimeout);
        break;
#endif
    case QSystemTray:
        notifySystray(cls, title, text, icon, millisTimeout);
        break;
#ifdef Q_WS_MAC
    case Growl:
        notifyGrowl(cls, title, text, icon);
        break;
#endif
    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;
    }
}