workspace/plasma/applets/systemtray/ui/notificationwidget.cpp

   1 /***************************************************************************
   2  *   notificationwidget.cpp                                                *
   3  *                                                                         *
   4  *   Copyright (C) 2008 Dmitry Suzdalev <dimsuz@gmail.com>                 *
   5  *   Copyright (C) 2008 Rob Scheepmaker <r.scheepmaker@student.utwente.nl> *
   6  *   Copyright (C) 2008 Jason Stubbs <jasonbstubbs@gmail.com>              *
   7  *                                                                         *
   8  *   This program is free software; you can redistribute it and/or modify  *
   9  *   it under the terms of the GNU Library General Public License as       *
  10  *   published by the Free Software Foundation; either version 2 of the    *
  11  *   License, or (at your option) any later version.                       *
  12  *                                                                         *
  13  *   This program is distributed in the hope that it will be useful,       *
  14  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  15  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  16  *   GNU Library General Public License for more details.                  *
  17  *                                                                         *
  18  *   You should have received a copy of the GNU Library General Public     *
  19  *   License along with this library; if not, write to the                 *
  20  *   Free Software Foundation, Inc.,                                       *
  21  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA .        *
  22  ***************************************************************************/
  23
  24 #include "notificationwidget.h"
  25
  26 #include <QSignalMapper>
  27
  28 #include <QtGui/QGraphicsLinearLayout>
  29 #include <QtGui/QTextDocument>
  30 #include <QtGui/QFontMetrics>
  31 #include <QtGui/QGraphicsSceneResizeEvent>
  32 #include <QtGui/QPainter>
  33
  34 #include <KColorScheme>
  35 #include <KPushButton>
  36 #include <KGlobalSettings>
  37 #include <KIcon>
  38 #include <KLocalizedString>
  39
  40 #include <plasma/extender.h>
  41 #include <plasma/extenderitem.h>
  42 #include <plasma/theme.h>
  43 #include <plasma/widgets/pushbutton.h>
  44
  45 class NotificationWidgetPrivate
  46 {
  47 public:
  48     NotificationWidgetPrivate(NotificationWidget *q)
  49         : q(q),
  50           notification(0),
  51           destroyOnClose(true),
  52           body(new QGraphicsTextItem(q)),
  53           actionsWidget(0),
  54           signalMapper(new QSignalMapper(q))
  55     {
  56     }
  57
  58     void setTextFields(const QString &applicationName, const QString &summary, const QString &message);
  59     void completeDetach();
  60     void updateActions();
  61     void updateNotification();
  62     void destroy();
  63
  64     NotificationWidget *q;
  65
  66     SystemTray::Notification *notification;
  67     bool destroyOnClose;
  68
  69     QString message;
  70     QGraphicsTextItem *body;
  71     QGraphicsWidget *actionsWidget;
  72     QHash<QString, QString> actions;
  73     QStringList actionOrder;
  74
  75     QSignalMapper *signalMapper;
  76 };
  77
  78 NotificationWidget::NotificationWidget(SystemTray::Notification *notification, Plasma::ExtenderItem *extenderItem)
  79     : QGraphicsWidget(extenderItem),
  80       d(new NotificationWidgetPrivate(this))
  81 {
  82     setMinimumWidth(300);
  83     setPreferredWidth(400);
  84
  85     Plasma::Theme *theme = Plasma::Theme::defaultTheme();
  86     d->body->setFont(theme->font(Plasma::Theme::DefaultFont));
  87     d->body->setDefaultTextColor(theme->color(Plasma::Theme::TextColor));
  88
  89     QTextOption option = d->body->document()->defaultTextOption();
  90     option.setWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere);
  91     d->body->document()->setDefaultTextOption(option);
  92
  93     if (notification) {
  94         d->notification = notification;
  95
  96         connect(d->signalMapper, SIGNAL(mapped(const QString &)),
  97                 d->notification, SLOT(triggerAction(const QString &)));
  98         connect(notification, SIGNAL(changed()),
  99                 this, SLOT(updateNotification()));
 100         connect(notification, SIGNAL(destroyed()),
 101                 this, SLOT(destroy()));
 102
 103         d->updateNotification();
 104     } else {
 105         d->setTextFields(extenderItem->config().readEntry("applicationName", ""),
 106                          extenderItem->config().readEntry("summary", ""),
 107                          extenderItem->config().readEntry("message", ""));
 108         qreal bodyHeight = d->body->boundingRect().height();
 109         setPreferredHeight(bodyHeight);
 110         extenderItem->showCloseButton();
 111     }
 112 }
 113
 114 NotificationWidget::~NotificationWidget()
 115 {
 116     delete d;
 117 }
 118
 119 void NotificationWidget::resizeEvent(QGraphicsSceneResizeEvent *event)
 120 {
 121     d->body->setTextWidth(event->newSize().width());
 122     d->body->setPos(0, 0);
 123     if (d->actionsWidget) {
 124         d->actionsWidget->setPos(event->newSize().width() - d->actionsWidget->size().width(),
 125                                  event->newSize().height() - d->actionsWidget->size().height());
 126     }
 127 }
 128
 129 void NotificationWidgetPrivate::setTextFields(const QString &applicationName,
 130                                                 const QString &summary, const QString &message)
 131 {
 132     Plasma::ExtenderItem *extenderItem = dynamic_cast<Plasma::ExtenderItem*>(q->parentWidget());
 133
 134     if (!summary.isEmpty()) {
 135         extenderItem->setTitle(summary);
 136     } else {
 137         extenderItem->setTitle(i18n("Notification from %1", applicationName));
 138     }
 139
 140     body->setHtml(message);
 141 }
 142
 143 void NotificationWidgetPrivate::completeDetach()
 144 {
 145     actions.clear();
 146     actionOrder.clear();
 147
 148     delete actionsWidget;
 149     actionsWidget = 0;
 150 }
 151
 152 void NotificationWidgetPrivate::updateActions()
 153 {
 154     if (actions.isEmpty() || actionsWidget) {
 155         return;
 156     }
 157
 158     actionsWidget = new QGraphicsWidget(q);
 159     QGraphicsLinearLayout *layout = new QGraphicsLinearLayout(actionsWidget);
 160     layout->setOrientation(Qt::Horizontal);
 161     actionsWidget->setContentsMargins(0, 0, 0, 0);
 162
 163     foreach (const QString &actionId, actionOrder) {
 164         Plasma::PushButton *button = new Plasma::PushButton(actionsWidget);
 165         QString &action = actions[actionId];
 166         button->setText(action);
 167         button->setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Minimum);
 168         //TODO: we need smaller buttons but I don't like this method of accomplishing it.
 169         button->setPreferredHeight(button->minimumHeight() - 6);
 170
 171         q->connect(button, SIGNAL(clicked()), signalMapper, SLOT(map()));
 172         signalMapper->setMapping(button, actionId);
 173
 174         layout->addItem(button);
 175     }
 176
 177     layout->updateGeometry();
 178     actionsWidget->setPos(q->size().width() - actionsWidget->size().width(),
 179                           q->size().width() - actionsWidget->size().height());
 180 }
 181
 182 void NotificationWidgetPrivate::updateNotification()
 183 {
 184     Plasma::ExtenderItem *extenderItem = dynamic_cast<Plasma::ExtenderItem*>(q->parentWidget());
 185
 186     //store the notification
 187     extenderItem->config().writeEntry("applicationName", notification->applicationName());
 188     extenderItem->config().writeEntry("summary", notification->summary());
 189     extenderItem->config().writeEntry("message", notification->message());
 190
 191     //set text fields and icon
 192     setTextFields(notification->applicationName(), notification->summary(), notification->message());
 193     extenderItem->setIcon(notification->applicationIcon());
 194
 195     //set the actions provided
 196     actions = notification->actions();
 197     actionOrder = notification->actionOrder();
 198     updateActions();
 199
 200     //set the correct size hint and display a close action if no actions are provided by the
 201     //notification
 202     qreal bodyHeight = body->boundingRect().height();
 203     if (actionsWidget) {
 204         extenderItem->hideCloseButton();
 205         q->setPreferredHeight(bodyHeight + actionsWidget->size().height());
 206     } else {
 207         extenderItem->showCloseButton();
 208         q->setPreferredHeight(bodyHeight);
 209     }
 210 }
 211
 212 void NotificationWidgetPrivate::destroy()
 213 {
 214     Plasma::ExtenderItem *extenderItem = dynamic_cast<Plasma::ExtenderItem *>(q->parentItem());
 215
 216     if (extenderItem->isDetached()) {
 217         completeDetach();
 218     } else {
 219         completeDetach();
 220         extenderItem->destroy();
 221     }
 222
 223     notification = 0;
 224 }
 225
 226 #include "notificationwidget.moc"