workspace/plasma/applets/tasks/windowtaskitem.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2007 by Robert Knight <robertknight@gmail.com>          *
   3  *   Copyright (C) 2008 by Alexis Ménard <darktears31@gmail.com>           *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA .        *
  19  ***************************************************************************/
  20
  21 // Own
  22 #include "windowtaskitem.h"
  23 #include "taskgroupitem.h"
  24
  25 // Qt
  26 #include <QGraphicsSceneContextMenuEvent>
  27 #include <QStyleOptionGraphicsItem>
  28 #include <QGraphicsView>
  29 #include <QTimer>
  30 #include <QApplication>
  31
  32 // KDE
  33 #include <KAuthorized>
  34 #include <KDebug>
  35 #include <KIcon>
  36 #include <KLocalizedString>
  37 #include <KGlobalSettings>
  38 #include <KIconLoader>
  39
  40 #include <taskmanager/taskactions.h>
  41 #include <taskmanager/task.h>
  42 #include <taskmanager/taskmanager.h>
  43 #include <taskmanager/taskgroup.h>
  44
  45 #include <Plasma/Theme>
  46 #include <Plasma/FrameSvg>
  47 #include <Plasma/ToolTipManager>
  48 #include <Plasma/Corona>
  49 #include <Plasma/Containment>
  50
  51 #include "tasks.h"
  52
  53 WindowTaskItem::WindowTaskItem(QGraphicsWidget *parent, Tasks *applet, const bool showTooltip)
  54     : AbstractTaskItem(parent, applet, showTooltip),
  55       m_task(0)
  56 {
  57 }
  58
  59
  60 void WindowTaskItem::activate()
  61 {
  62     // the Task class has a method called activateRaiseOrIconify() which
  63     // should perform the required action here.
  64     //
  65     // however it currently does not minimize the task's window if the item
  66     // is clicked whilst the window is active probably because the active window by
  67     // the time the mouse is released over the window task button is not the
  68     // task's window but instead the desktop window
  69     //
  70     // TODO: the Kicker panel in KDE 3.x has a feature whereby clicking on it
  71     // does not take away the focus from the active window (unless clicking
  72     // in a widget such as a line edit which does accept the focus)
  73     // this needs to be implemented for Plasma's own panels.
  74     //kDebug();
  75     if (m_task) {
  76         m_task->task()->activateRaiseOrIconify();
  77        // emit windowSelected(this);
  78     }
  79 }
  80
  81 void WindowTaskItem::mousePressEvent(QGraphicsSceneMouseEvent *event)
  82 {
  83     if (event->buttons() & Qt::MidButton) {
  84         if (isGrouped()) {
  85             parentGroup()->collapse();
  86         }
  87     } else {
  88         AbstractTaskItem::mousePressEvent(event);
  89     }
  90
  91     event->accept();
  92 }
  93
  94 //destroy this item
  95 void WindowTaskItem::close()
  96 {
  97     //kDebug();
  98     m_task = 0;
  99 }
 100
 101 void WindowTaskItem::publishIconGeometry() const
 102 {
 103     if (!m_task) {
 104         return;
 105     }
 106
 107     QRect rect = iconGeometry();
 108     m_task->task()->publishIconGeometry(rect);
 109 }
 110
 111 void WindowTaskItem::publishIconGeometry(const QRect &rect) const
 112 {
 113     if (m_task) {
 114         m_task->task()->publishIconGeometry(rect);
 115     }
 116 }
 117
 118 void WindowTaskItem::updateTask(::TaskManager::TaskChanges changes)
 119 {
 120     if (!m_task) {
 121         return;
 122     }
 123
 124     // task flags
 125     bool needsUpdate = false;
 126     TaskFlags flags = m_flags;
 127     if (m_task->isActive()) {
 128         flags |= TaskHasFocus;
 129         emit activated(this);
 130     } else {
 131         flags &= ~TaskHasFocus;
 132     }
 133
 134     if (m_task->demandsAttention()) {
 135         flags |= TaskWantsAttention;
 136     } else {
 137         flags &= ~TaskWantsAttention;
 138     }
 139
 140     if (m_task->isMinimized()) {
 141         flags |= TaskIsMinimized;
 142     } else {
 143         flags &= ~TaskIsMinimized;
 144     }
 145
 146     if (m_flags != flags) {
 147         needsUpdate = true;
 148         setTaskFlags(flags);
 149     }
 150
 151     // basic title and icon
 152     if (changes & TaskManager::IconChanged) {
 153         needsUpdate = true;
 154         setIcon(m_task->icon());
 155     }
 156
 157     if (changes & TaskManager::NameChanged) {
 158         needsUpdate = true;
 159         setText(m_task->name());
 160     }
 161
 162     if (m_showingTooltip &&
 163         (changes & TaskManager::IconChanged ||
 164          changes & TaskManager::NameChanged ||
 165          changes & TaskManager::DesktopChanged)) {
 166         updateToolTip();
 167     }
 168
 169     if (needsUpdate) {
 170         //redraw
 171         //kDebug() << m_task->name();
 172         queueUpdate();
 173     }
 174 }
 175
 176 void WindowTaskItem::updateToolTip()
 177 {
 178     if (!m_task) {
 179         return;
 180     }
 181
 182     Plasma::ToolTipContent data(m_task->name(),
 183                                 i18nc("Which virtual desktop a window is currently on", "On %1",
 184                                       KWindowSystem::desktopName(m_task->desktop())),
 185                                 m_task->task()->icon(KIconLoader::SizeSmall, KIconLoader::SizeSmall, false));
 186     data.setWindowToPreview(m_task->task()->window());
 187
 188     Plasma::ToolTipManager::self()->setContent(this, data);
 189 }
 190
 191 void WindowTaskItem::setStartupTask(TaskItem *task)
 192 {
 193     //kDebug();
 194     if (!task->startup()) {
 195         kDebug() << "Error";
 196         return;
 197     }
 198     m_abstractItem = qobject_cast<TaskManager::AbstractGroupableItem *>(task);
 199     if (!m_abstractItem) {
 200         kDebug() << "error";
 201     }
 202     connect(task, SIGNAL(gotTaskPointer()), this, SLOT(gotTaskPointer()));
 203     setText(task->startup()->text());
 204     setIcon(KIcon(task->startup()->icon()));
 205 }
 206
 207 void WindowTaskItem::gotTaskPointer()
 208 {
 209     //kDebug();
 210     TaskManager::TaskItem *item = qobject_cast<TaskManager::TaskItem*>(sender());
 211     if (item) {
 212         setWindowTask(item);
 213     }
 214 }
 215
 216
 217 void WindowTaskItem::setWindowTask(TaskManager::TaskItem* taskItem)
 218 {
 219     if (m_task) {
 220         disconnect(m_task->task().constData(), 0, this, 0);
 221     }
 222     m_task = taskItem;
 223     m_abstractItem = qobject_cast<TaskManager::AbstractGroupableItem *>(taskItem);
 224     if (!m_abstractItem) {
 225         kDebug() << "error";
 226     }
 227
 228     connect(m_task, SIGNAL(changed(::TaskManager::TaskChanges)),
 229             this, SLOT(updateTask(::TaskManager::TaskChanges)));
 230
 231     updateTask(::TaskManager::EverythingChanged);
 232     publishIconGeometry();
 233
 234     //kDebug() << "Task added, isActive = " << task->isActive();
 235 }
 236
 237 void WindowTaskItem::setTask(TaskManager::TaskItem* taskItem)
 238 {
 239     if (!taskItem->startup() && !taskItem->task()) {
 240         kDebug() << "Error";
 241         return;
 242     }
 243
 244     if (!taskItem->task()) {
 245         setStartupTask(taskItem);
 246     } else {
 247         setWindowTask(taskItem);
 248     }
 249 }
 250
 251
 252 TaskManager::TaskPtr WindowTaskItem::windowTask() const
 253 {
 254     return m_task->task();
 255 }
 256
 257 void WindowTaskItem::contextMenuEvent(QGraphicsSceneContextMenuEvent *e)
 258 {
 259     if (!KAuthorized::authorizeKAction("kwin_rmb") || !m_task) {
 260         QGraphicsWidget::contextMenuEvent(e);
 261         return;
 262     }
 263
 264     QList <QAction*> actionList;
 265     QAction *a(0);
 266     if (m_task->isGrouped()) {
 267         a = new QAction(i18n("Collapse Parent Group"), this);
 268         actionList.append(a);
 269         //connect(a, SIGNAL(triggered()), m_applet->groupItem(m_task->parentGroup()), SLOT(collapse())); FIXME
 270     }
 271
 272     TaskManager::BasicMenu menu(0, m_task, &m_applet->groupManager(), actionList);
 273     menu.adjustSize();
 274     Q_ASSERT(m_applet->containment());
 275     Q_ASSERT(m_applet->containment()->corona());
 276     menu.exec(m_applet->containment()->corona()->popupPosition(this, menu.size()));
 277     delete a;
 278 }
 279
 280
 281
 282 bool WindowTaskItem::isWindowItem() const
 283 {
 284     return true;
 285 }
 286
 287 bool WindowTaskItem::isActive() const
 288 {
 289     if (!m_task) {
 290         //kDebug() << "no task set";
 291         return false;
 292     }
 293     return m_task->isActive();
 294 }
 295
 296 void WindowTaskItem::setAdditionalMimeData(QMimeData* mimeData)
 297 {
 298     m_task->addMimeData(mimeData);
 299 }
 300
 301 #include "windowtaskitem.moc"
 302