src/mvc/delegate.cpp

   1 /*
   2  * Copyright (C) 2010 Ixonos Plc.
   3  *
   4  * This file is part of fosdem-schedule.
   5  *
   6  * fosdem-schedule is free software: you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the Free
   8  * Software Foundation, either version 2 of the License, or (at your option)
   9  * any later version.
  10  *
  11  * fosdem-schedule is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  13  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  14  * more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along with
  17  * fosdem-schedule.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19 #include "delegate.h"
  20 #include "eventmodel.h"
  21 #include <track.h>
  22
  23 #include <QDebug>
  24 #include <QPainter>
  25
  26 const int RADIUS = 10;
  27 const int SPACER = 10;
  28
  29 const double scaleFactor1 = 0.4;
  30 const double scaleFactor2 = 0.8;
  31
  32 Delegate::Delegate(QTreeView *aParent)
  33     : QItemDelegate(aParent)
  34     , mViewPtr(aParent)
  35 {
  36     mControls.clear();
  37     defineControls();
  38 }
  39
  40 Delegate::~Delegate()
  41 {
  42     QListIterator<ControlId> i(mControls.keys());
  43     while (i.hasNext())
  44     {
  45         delete mControls[i.next()]->image();
  46     }
  47 }
  48
  49 void Delegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
  50 {
  51     if(!mViewPtr)
  52         return;
  53
  54     painter->save();
  55     QColor bkgrColor = Qt::cyan;
  56     //QColor bkgrColor = QColor(0xAA,0xAA,0xAA);
  57     QColor conflictColor = Qt::yellow;
  58
  59     QPen borderPen(bkgrColor.darker());
  60     if(hasParent(index))
  61     {
  62         int aux = option.rect.height() - mControls[FavouriteControlOn]->drawPoint().y() - mControls[FavouriteControlOn]->image()->height();
  63         // font SMALL
  64         QFont fontSmall = option.font;
  65         fontSmall.setBold(false);
  66         fontSmall.setPixelSize(aux*0.2);
  67         QFontMetrics fmSmall(fontSmall);
  68         // font SMALL bold
  69         QFont fontSmallB = fontSmall;
  70         fontSmallB.setBold(true);
  71         QFontMetrics fmSmallB(fontSmallB);
  72
  73         // font BIG
  74         QFont fontBig = option.font;
  75         fontBig.setBold(false);
  76         fontBig.setPixelSize(aux*0.33);
  77         QFontMetrics fmBig(fontBig);
  78         // font BIG bold
  79         QFont fontBigB = fontBig;
  80         fontBigB.setBold(true);
  81         QFontMetrics fmBigB(fontBigB);
  82
  83         //int spacer = (fmSmall.boundingRect("999").width() < SPACER) ? SPACER : fmSmall.boundingRect("999").width();
  84
  85         //Time conflicts are colored differently
  86         if(static_cast<Event*>(index.internalPointer())->hasTimeConflict())
  87             bkgrColor = conflictColor;
  88
  89         QLinearGradient itemGradient(option.rect.topLeft(), option.rect.bottomLeft());
  90         itemGradient.setColorAt(0.0, Qt::white);
  91         itemGradient.setColorAt(0.25, bkgrColor);
  92         itemGradient.setColorAt(0.5, bkgrColor);
  93         itemGradient.setColorAt(0.75, bkgrColor);
  94         itemGradient.setColorAt(1.0, Qt::white);
  95
  96         if(isLast(index))
  97         {
  98             QPainterPath endPath;
  99             endPath.moveTo(option.rect.topLeft());
 100             endPath.lineTo(option.rect.bottomLeft()-QPoint(0, RADIUS));
 101             endPath.arcTo(option.rect.left(), option.rect.bottom()-2*RADIUS, 2*RADIUS, 2*RADIUS, 180, 90);
 102             endPath.lineTo(option.rect.bottomRight()-QPoint(RADIUS, 0));
 103             endPath.arcTo(option.rect.right()-2*RADIUS, option.rect.bottom()-2*RADIUS, 2*RADIUS, 2*RADIUS, 270, 90);
 104             endPath.lineTo(option.rect.topRight());
 105
 106             //painter->setBrush( bkgrColor );
 107             painter->setBrush(itemGradient);
 108             painter->setPen(borderPen);
 109             painter->drawPath(endPath);
 110
 111             painter->setFont(option.font);
 112         }
 113         else // middle elements
 114         {
 115             //painter->setBrush( bkgrColor );
 116             painter->setBrush(itemGradient);
 117             painter->setPen(Qt::NoPen);
 118             painter->drawRect(option.rect);
 119
 120             painter->setPen(borderPen);
 121             // vertical lines
 122             painter->drawLine(option.rect.topLeft(), option.rect.bottomLeft());
 123             painter->drawLine(option.rect.topRight(), option.rect.bottomRight());
 124             // horizontal lines
 125             painter->drawLine(option.rect.bottomLeft(), option.rect.bottomRight());
 126
 127             painter->setFont(option.font);
 128         }
 129
 130         // draw Controls
 131         // favourite
 132         if(static_cast<Event*>(index.internalPointer())->isFavourite())
 133             painter->drawImage(mControls[FavouriteControlOn]->drawPoint(option.rect),*mControls[FavouriteControlOn]->image());
 134         else
 135             painter->drawImage(mControls[FavouriteControlOff]->drawPoint(option.rect),*mControls[FavouriteControlOff]->image());
 136 #ifdef MAEMO
 137         // alarm
 138         if(static_cast<Event*>(index.internalPointer())->hasAlarm())
 139             painter->drawImage(mControls[AlarmControlOn]->drawPoint(option.rect),*mControls[AlarmControlOn]->image());
 140         else
 141             painter->drawImage(mControls[AlarmControlOff]->drawPoint(option.rect),*mControls[AlarmControlOff]->image());
 142 #endif
 143         // map
 144         painter->drawImage(mControls[MapControl]->drawPoint(option.rect),*mControls[MapControl]->image());
 145         // Time conflict
 146         if(static_cast<Event*>(index.internalPointer())->hasTimeConflict())
 147             painter->drawImage(mControls[WarningControl]->drawPoint(option.rect),*mControls[WarningControl]->image());
 148
 149         // draw texts
 150         Event *event = static_cast<Event*>(index.internalPointer());
 151         QPointF titlePointF(mControls[FavouriteControlOn]->drawPoint(option.rect));
 152         titlePointF.setX(option.rect.x()+SPACER);
 153         titlePointF.setY(titlePointF.y()+mControls[FavouriteControlOn]->image()->height());
 154         QTime start = event->start().time();
 155         painter->setFont(fontBig);
 156         painter->drawText(titlePointF,start.toString("hh:mm") + "-" + start.addSecs(event->duration()).toString("hh:mm") + ", " + event->room());
 157         // title
 158         titlePointF.setY(titlePointF.y()+fmBig.height()-fmBig.descent());
 159         painter->setFont(fontBigB);
 160         QString title = event->title();
 161         if(fmBigB.boundingRect(title).width() > (option.rect.width()-2*SPACER)) // the title won't fit the screen
 162         {
 163             // chop words from the end
 164             while( (fmBigB.boundingRect(title + "...").width() > (option.rect.width()-2*SPACER)) && !title.isEmpty())
 165             {
 166                 title.chop(1);
 167                 // chop characters one-by-one from the end
 168                 while( (!title.at(title.length()-1).isSpace()) && !title.isEmpty())
 169                 {
 170                     title.chop(1);
 171                 }
 172             }
 173             title += "...";
 174         }
 175         painter->drawText(titlePointF,title);
 176         // persons
 177         titlePointF.setY(titlePointF.y()+fmSmall.height()-fmSmall.descent());
 178         painter->setFont(fontSmall);
 179         painter->drawText(titlePointF,"Presenter(s): " + event->persons().join(" and "));
 180         // track
 181         titlePointF.setY(titlePointF.y()+fmSmall.height()-fmSmall.descent());
 182         painter->drawText(titlePointF,"Track: " + Track::retrieveTrackName(event->trackId()));
 183     }
 184     else // doesn't have parent - time-groups' elements (top items)
 185     {
 186         QFont fontSmall = option.font;
 187         fontSmall.setBold(true);
 188         fontSmall.setPixelSize(option.rect.height()*scaleFactor1);
 189         QFontMetrics fmSmall(fontSmall);
 190
 191         QFont fontBig = option.font;
 192         fontBig.setBold(true);
 193         fontBig.setPixelSize(option.rect.height()*scaleFactor2);
 194         QFontMetrics fmBig(fontBig);
 195
 196         int spacer = (fmSmall.boundingRect("999").width() < SPACER) ? SPACER : fmSmall.boundingRect("999").width();
 197
 198         QLinearGradient titleGradient(option.rect.topLeft(), option.rect.topRight());
 199         //titleGradient.setColorAt(0.0, Qt::white);
 200         titleGradient.setColorAt(0.0, bkgrColor);
 201         titleGradient.setColorAt(0.5, Qt::white);
 202         titleGradient.setColorAt(1.0, bkgrColor);
 203
 204         QPainterPath titlePath;
 205         if(isExpanded(index))
 206         {
 207             titlePath.moveTo(option.rect.bottomLeft());
 208             titlePath.lineTo(option.rect.topLeft()+QPoint(0, RADIUS));
 209             titlePath.arcTo(option.rect.left(), option.rect.top(), 2*RADIUS, 2*RADIUS, 180, -90);
 210             titlePath.lineTo(option.rect.topRight()-QPoint(RADIUS, 0));
 211             titlePath.arcTo(option.rect.right()-2*RADIUS, option.rect.top(), 2*RADIUS, 2*RADIUS, 90, -90);
 212             titlePath.lineTo(option.rect.bottomRight());
 213             titlePath.closeSubpath();
 214         }
 215         else
 216         {
 217             titlePath.lineTo(option.rect.topLeft()+QPoint(0, RADIUS));
 218             titlePath.arcTo(option.rect.left(), option.rect.top(), 2*RADIUS, 2*RADIUS, 180, -90);
 219             titlePath.lineTo(option.rect.topRight()-QPoint(RADIUS, 0));
 220             titlePath.arcTo(option.rect.right()-2*RADIUS, option.rect.top(), 2*RADIUS, 2*RADIUS, 90, -90);
 221             titlePath.lineTo(option.rect.bottomRight()-QPoint(0, RADIUS));
 222             titlePath.arcTo(option.rect.right()-2*RADIUS, option.rect.bottom()-2*RADIUS, 2*RADIUS, 2*RADIUS, 0, -90);
 223             titlePath.lineTo(option.rect.bottomLeft()+QPoint(RADIUS, 0));
 224             titlePath.arcTo(option.rect.left(), option.rect.bottom()-2*RADIUS, 2*RADIUS, 2*RADIUS, 270, -90);
 225             titlePath.closeSubpath();
 226         }
 227
 228         painter->setBrush(titleGradient);
 229         painter->setPen(borderPen);
 230         painter->drawPath(titlePath);
 231
 232         // draw icons
 233         painter->setFont(fontSmall);
 234         QImage *image = mControls[FavouriteControlOn]->image();
 235         QPoint drawPoint =
 236             option.rect.topRight()
 237             - QPoint(
 238                     spacer + image->width(),
 239                     - option.rect.height()/2 + image->height()/2);
 240         painter->drawImage(drawPoint,*image);
 241         painter->drawText(drawPoint+QPoint(image->width()+2, image->height() - 2),
 242                 QString::number(numberOfFavourities(index)));
 243 #ifdef MAEMO
 244         drawPoint.setX(drawPoint.x() - spacer - image->width());
 245         painter->drawImage(drawPoint,*mControls[AlarmControlOn]->image());
 246         painter->drawText(drawPoint+QPoint(image->width()+2, image->height() - 2),
 247                 QString::number(numberOfAlarms(index)));
 248 #endif
 249         // draw texts
 250         QString numEvents = QString::number(index.model()->rowCount(index)).append("/");
 251         drawPoint.setX(drawPoint.x() - spacer - fmSmall.boundingRect(numEvents).width());
 252         drawPoint.setY(drawPoint.y()+image->height() - 2);
 253         painter->drawText(drawPoint,numEvents);
 254
 255         QPointF titlePointF = QPoint(
 256                 option.rect.x()+SPACER,
 257                 option.rect.y()+option.rect.height()-fmBig.descent());
 258         painter->setFont(fontBig);
 259
 260         painter->drawText(titlePointF,qVariantValue<QString>(index.data()));
 261     }
 262
 263     //// HIGHLIGHTING SELECTED ITEM
 264     //if (option.state & QStyle::State_Selected)
 265         //painter->fillRect(option.rect, option.palette.highlight());
 266
 267     painter->restore();
 268 }
 269
 270 QSize Delegate::sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const
 271 {
 272     Q_UNUSED(option)
 273
 274     if (index.internalId() == 0) // time group
 275     {
 276         return QSize(40,40);
 277     }
 278     else // event
 279     {
 280         return QSize(100,100);
 281     }
 282 }
 283
 284 bool Delegate::hasParent( const QModelIndex &index ) const
 285 {
 286     if( index.parent().isValid() )
 287         return true;
 288     else
 289         return false;
 290 }
 291
 292 bool Delegate::isLast( const QModelIndex &index ) const
 293 {
 294     if(!hasParent(index))
 295         return false; // what should be returned here?
 296
 297     if(index.row() >= (index.model()->rowCount(index.parent())-1))
 298         return true;
 299     else
 300         return false;
 301 }
 302
 303 bool Delegate::isExpanded( const QModelIndex &index ) const
 304 {
 305     if( !mViewPtr )
 306         return false;
 307     else
 308         return mViewPtr->isExpanded( index );
 309 }
 310
 311 Delegate::ControlId Delegate::whichControlClicked(const QModelIndex &aIndex, const QPoint &aPoint) const
 312 {
 313     if(!hasParent(aIndex)) // time-group item (root item)
 314         return ControlNone;
 315
 316     QListIterator<ControlId> i(mControls.keys());
 317     while (i.hasNext())
 318     {
 319         ControlId id = i.next();
 320         if(mControls[id]->drawRect(static_cast<QTreeView*>(parent())->visualRect(aIndex)).contains(aPoint))
 321         {
 322             if(id == WarningControl)
 323             {
 324                 if(static_cast<Event*>(aIndex.internalPointer())->hasTimeConflict())
 325                     return id;
 326             }
 327             else
 328                 return id;
 329         }
 330     }
 331
 332     return ControlNone;
 333 }
 334
 335 void Delegate::defineControls()
 336 {
 337     Control *control;
 338     QPoint p(0,0);
 339     // FAVOURITE ICONs
 340     // on
 341     control = new Control(FavouriteControlOn,QString(":icons/favourite-onBig.png"));
 342     p = QPoint(0,SPACER);
 343     p.setX(p.x()-control->image()->width()-SPACER);
 344     control->setDrawPoint(p);
 345     mControls.insert(FavouriteControlOn,control);
 346     // off
 347     control = new Control(FavouriteControlOff,QString(":icons/favourite-offBig.png"));
 348     p = QPoint(0,SPACER);
 349     p.setX(p.x()-control->image()->width()-SPACER);
 350     control->setDrawPoint(p);
 351     mControls.insert(FavouriteControlOff,control);
 352
 353 #ifdef MAEMO
 354     // ALARM ICONs
 355     // on
 356     control = new Control(AlarmControlOn,QString(":icons/alarm-onBig.png"));
 357     p = mControls[FavouriteControlOn]->drawPoint();
 358     p.setX(p.x()-control->image()->width()-SPACER);
 359     control->setDrawPoint(p);
 360     mControls.insert(AlarmControlOn,control);
 361     // off
 362     control = new Control(AlarmControlOff,QString(":icons/alarm-offBig.png"));
 363     p = mControls[FavouriteControlOff]->drawPoint();
 364     p.setX(p.x()-control->image()->width()-SPACER);
 365     control->setDrawPoint(p);
 366     mControls.insert(AlarmControlOff,control);
 367
 368     // MAP ICON
 369     control = new Control(MapControl,QString(":icons/compassBig.png"));
 370     p = mControls[AlarmControlOn]->drawPoint();
 371     p.setX(p.x()-control->image()->width()-SPACER);
 372     control->setDrawPoint(p);
 373     mControls.insert(MapControl,control);
 374 #else
 375     // MAP ICON
 376     control = new Control(MapControl,QString(":icons/compassBig.png"));
 377     p = mControls[FavouriteControlOn]->drawPoint();
 378     p.setX(p.x()-control->image()->width()-SPACER);
 379     control->setDrawPoint(p);
 380     mControls.insert(MapControl,control);
 381 #endif
 382
 383     // WARNING ICON
 384     control = new Control(WarningControl,QString(":icons/exclamation.png"));
 385     p = mControls[MapControl]->drawPoint();
 386     p.setX(p.x()-control->image()->width()-SPACER);
 387     control->setDrawPoint(p);
 388     mControls.insert(WarningControl,control);
 389 }
 390
 391 bool Delegate::isPointFromRect(const QPoint &aPoint, const QRect &aRect) const
 392 {
 393     if( (aPoint.x()>=aRect.left() && aPoint.x()<=aRect.right()) && (aPoint.y()>=aRect.top() && aPoint.y()<=aRect.bottom()) )
 394         return true;
 395
 396     return false;
 397 }
 398
 399 int Delegate::numberOfFavourities(const QModelIndex &index) const
 400 {
 401     if(index.parent().isValid()) // it's event, not time-group
 402         return 0;
 403
 404     int nrofFavs = 0;
 405     for(int i=0; i<index.model()->rowCount(index); i++)
 406         if(static_cast<Event*>(index.child(i,0).internalPointer())->isFavourite())
 407             nrofFavs++;
 408
 409     return nrofFavs;
 410 }
 411
 412 int Delegate::numberOfAlarms(const QModelIndex &index) const
 413 {
 414     if(index.parent().isValid()) // it's event, not time-group
 415         return 0;
 416
 417     int nrofAlarms = 0;
 418     for(int i=0; i<index.model()->rowCount(index); i++)
 419         if(static_cast<Event*>(index.child(i,0).internalPointer())->hasAlarm())
 420             nrofAlarms++;
 421
 422     return nrofAlarms;
 423 }
 424