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 #include "room.h"
  27
  28 const int RADIUS = 10;
  29 const int SPACER = 10;
  30
  31 const double scaleFactor1 = 0.4;
  32 const double scaleFactor2 = 0.8;
  33
  34 Delegate::Delegate(QTreeView *aParent)
  35     : QItemDelegate(aParent)
  36     , mViewPtr(aParent)
  37 {
  38     mControls.clear();
  39     defineControls();
  40 }
  41
  42 Delegate::~Delegate()
  43 {
  44     QListIterator<ControlId> i(mControls.keys());
  45     while (i.hasNext())
  46     {
  47         delete mControls[i.next()]->image();
  48     }
  49 }
  50
  51 void Delegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
  52 {
  53     if(!mViewPtr)
  54         return;
  55
  56     painter->save();
  57     QColor bkgrColor = Qt::cyan;
  58     //QColor bkgrColor = QColor(0xAA,0xAA,0xAA);
  59     QColor conflictColor = Qt::yellow;
  60
  61     QPen borderPen(bkgrColor.darker());
  62     if(hasParent(index))
  63     {
  64         int aux = option.rect.height() - mControls[FavouriteControlOn]->drawPoint().y() - mControls[FavouriteControlOn]->image()->height();
  65         Event *event = static_cast<Event*>(index.internalPointer());
  66         // font SMALL
  67         QFont fontSmall = option.font;
  68         fontSmall.setBold(false);
  69         fontSmall.setPixelSize(aux*0.2);
  70         QFontMetrics fmSmall(fontSmall);
  71         // font SMALL bold
  72         QFont fontSmallB = fontSmall;
  73         fontSmallB.setBold(true);
  74         QFontMetrics fmSmallB(fontSmallB);
  75
  76         // font BIG
  77         QFont fontBig = option.font;
  78         fontBig.setBold(false);
  79         fontBig.setPixelSize(aux*0.33);
  80         QFontMetrics fmBig(fontBig);
  81         // font BIG bold
  82         QFont fontBigB = fontBig;
  83         fontBigB.setBold(true);
  84         QFontMetrics fmBigB(fontBigB);
  85
  86         //int spacer = (fmSmall.boundingRect("999").width() < SPACER) ? SPACER : fmSmall.boundingRect("999").width();
  87
  88         //Time conflicts are colored differently
  89         if(event->hasTimeConflict())
  90             bkgrColor = conflictColor;
  91
  92         QLinearGradient itemGradient(option.rect.topLeft(), option.rect.bottomLeft());
  93         itemGradient.setColorAt(0.0, Qt::white);
  94         itemGradient.setColorAt(0.25, bkgrColor);
  95         itemGradient.setColorAt(0.5, bkgrColor);
  96         itemGradient.setColorAt(0.75, bkgrColor);
  97         itemGradient.setColorAt(1.0, Qt::white);
  98
  99         if(isLast(index))
 100         {
 101             QPainterPath endPath;
 102             endPath.moveTo(option.rect.topLeft());
 103             endPath.lineTo(option.rect.bottomLeft()-QPoint(0, RADIUS));
 104             endPath.arcTo(option.rect.left(), option.rect.bottom()-2*RADIUS, 2*RADIUS, 2*RADIUS, 180, 90);
 105             endPath.lineTo(option.rect.bottomRight()-QPoint(RADIUS, 0));
 106             endPath.arcTo(option.rect.right()-2*RADIUS, option.rect.bottom()-2*RADIUS, 2*RADIUS, 2*RADIUS, 270, 90);
 107             endPath.lineTo(option.rect.topRight());
 108
 109             //painter->setBrush( bkgrColor );
 110             painter->setBrush(itemGradient);
 111             painter->setPen(borderPen);
 112             painter->drawPath(endPath);
 113
 114             painter->setFont(option.font);
 115         }
 116         else // middle elements
 117         {
 118             //painter->setBrush( bkgrColor );
 119             painter->setBrush(itemGradient);
 120             painter->setPen(Qt::NoPen);
 121             painter->drawRect(option.rect);
 122
 123             painter->setPen(borderPen);
 124             // vertical lines
 125             painter->drawLine(option.rect.topLeft(), option.rect.bottomLeft());
 126             painter->drawLine(option.rect.topRight(), option.rect.bottomRight());
 127             // horizontal lines
 128             painter->drawLine(option.rect.bottomLeft(), option.rect.bottomRight());
 129
 130             painter->setFont(option.font);
 131         }
 132
 133         // draw Controls
 134         // favourite
 135         if(event->isFavourite())
 136             painter->drawImage(mControls[FavouriteControlOn]->drawPoint(option.rect),*mControls[FavouriteControlOn]->image());
 137         else
 138             painter->drawImage(mControls[FavouriteControlOff]->drawPoint(option.rect),*mControls[FavouriteControlOff]->image());
 139 #ifdef MAEMO
 140         // alarm
 141         if(event->hasAlarm())
 142             painter->drawImage(mControls[AlarmControlOn]->drawPoint(option.rect),*mControls[AlarmControlOn]->image());
 143         else
 144             painter->drawImage(mControls[AlarmControlOff]->drawPoint(option.rect),*mControls[AlarmControlOff]->image());
 145 #endif
 146         // map
 147         if (event->room()->hasMap()) {
 148             painter->drawImage(mControls[MapControl]->drawPoint(option.rect),*mControls[MapControl]->image());
 149         }
 150         // Time conflict
 151         if(event->hasTimeConflict())
 152             painter->drawImage(mControls[WarningControl]->drawPoint(option.rect),*mControls[WarningControl]->image());
 153
 154         // draw texts
 155         QPointF titlePointF(mControls[FavouriteControlOn]->drawPoint(option.rect));
 156         titlePointF.setX(option.rect.x()+SPACER);
 157         titlePointF.setY(titlePointF.y()+mControls[FavouriteControlOn]->image()->height());
 158         QTime start = event->start().time();
 159         painter->setFont(fontBig);
 160         painter->drawText(titlePointF,start.toString("hh:mm") + "-" + start.addSecs(event->duration()).toString("hh:mm") + ", " + event->roomName());
 161         // title
 162         titlePointF.setY(titlePointF.y()+fmBig.height()-fmBig.descent());
 163         painter->setFont(fontBigB);
 164         QString title = event->title();
 165         if(fmBigB.boundingRect(title).width() > (option.rect.width()-2*SPACER)) // the title won't fit the screen
 166         {
 167             // chop words from the end
 168             while( (fmBigB.boundingRect(title + "...").width() > (option.rect.width()-2*SPACER)) && !title.isEmpty())
 169             {
 170                 title.chop(1);
 171                 // chop characters one-by-one from the end
 172                 while( (!title.at(title.length()-1).isSpace()) && !title.isEmpty())
 173                 {
 174                     title.chop(1);
 175                 }
 176             }
 177             title += "...";
 178         }
 179         painter->drawText(titlePointF,title);
 180         // persons
 181         titlePointF.setY(titlePointF.y()+fmSmall.height()-fmSmall.descent());
 182         painter->setFont(fontSmall);
 183         painter->drawText(titlePointF,"Presenter(s): " + event->persons().join(" and "));
 184         // track
 185         titlePointF.setY(titlePointF.y()+fmSmall.height()-fmSmall.descent());
 186         painter->drawText(titlePointF,"Track: " + Track::retrieveTrackName(event->trackId()));
 187     }
 188     else // doesn't have parent - time-groups' elements (top items)
 189     {
 190         QFont fontSmall = option.font;
 191         fontSmall.setBold(true);
 192         fontSmall.setPixelSize(option.rect.height()*scaleFactor1);
 193         QFontMetrics fmSmall(fontSmall);
 194
 195         QFont fontBig = option.font;
 196         fontBig.setBold(true);
 197         fontBig.setPixelSize(option.rect.height()*scaleFactor2);
 198         QFontMetrics fmBig(fontBig);
 199
 200         int spacer = (fmSmall.boundingRect("999").width() < SPACER) ? SPACER : fmSmall.boundingRect("999").width();
 201
 202         QLinearGradient titleGradient(option.rect.topLeft(), option.rect.topRight());
 203         //titleGradient.setColorAt(0.0, Qt::white);
 204         titleGradient.setColorAt(0.0, bkgrColor);
 205         titleGradient.setColorAt(0.5, Qt::white);
 206         titleGradient.setColorAt(1.0, bkgrColor);
 207
 208         QPainterPath titlePath;
 209         if(isExpanded(index))
 210         {
 211             titlePath.moveTo(option.rect.bottomLeft());
 212             titlePath.lineTo(option.rect.topLeft()+QPoint(0, RADIUS));
 213             titlePath.arcTo(option.rect.left(), option.rect.top(), 2*RADIUS, 2*RADIUS, 180, -90);
 214             titlePath.lineTo(option.rect.topRight()-QPoint(RADIUS, 0));
 215             titlePath.arcTo(option.rect.right()-2*RADIUS, option.rect.top(), 2*RADIUS, 2*RADIUS, 90, -90);
 216             titlePath.lineTo(option.rect.bottomRight());
 217             titlePath.closeSubpath();
 218         }
 219         else
 220         {
 221             titlePath.lineTo(option.rect.topLeft()+QPoint(0, RADIUS));
 222             titlePath.arcTo(option.rect.left(), option.rect.top(), 2*RADIUS, 2*RADIUS, 180, -90);
 223             titlePath.lineTo(option.rect.topRight()-QPoint(RADIUS, 0));
 224             titlePath.arcTo(option.rect.right()-2*RADIUS, option.rect.top(), 2*RADIUS, 2*RADIUS, 90, -90);
 225             titlePath.lineTo(option.rect.bottomRight()-QPoint(0, RADIUS));
 226             titlePath.arcTo(option.rect.right()-2*RADIUS, option.rect.bottom()-2*RADIUS, 2*RADIUS, 2*RADIUS, 0, -90);
 227             titlePath.lineTo(option.rect.bottomLeft()+QPoint(RADIUS, 0));
 228             titlePath.arcTo(option.rect.left(), option.rect.bottom()-2*RADIUS, 2*RADIUS, 2*RADIUS, 270, -90);
 229             titlePath.closeSubpath();
 230         }
 231
 232         painter->setBrush(titleGradient);
 233         painter->setPen(borderPen);
 234         painter->drawPath(titlePath);
 235
 236         // draw icons
 237         painter->setFont(fontSmall);
 238         QImage *image = mControls[FavouriteControlOn]->image();
 239         QPoint drawPoint =
 240             option.rect.topRight()
 241             - QPoint(
 242                     spacer + image->width(),
 243                     - option.rect.height()/2 + image->height()/2);
 244         painter->drawImage(drawPoint,*image);
 245         painter->drawText(drawPoint+QPoint(image->width()+2, image->height() - 2),
 246                 QString::number(numberOfFavourities(index)));
 247 #ifdef MAEMO
 248         drawPoint.setX(drawPoint.x() - spacer - image->width());
 249         painter->drawImage(drawPoint,*mControls[AlarmControlOn]->image());
 250         painter->drawText(drawPoint+QPoint(image->width()+2, image->height() - 2),
 251                 QString::number(numberOfAlarms(index)));
 252 #endif
 253         // draw texts
 254         QString numEvents = QString::number(index.model()->rowCount(index)).append("/");
 255         drawPoint.setX(drawPoint.x() - spacer - fmSmall.boundingRect(numEvents).width());
 256         drawPoint.setY(drawPoint.y()+image->height() - 2);
 257         painter->drawText(drawPoint,numEvents);
 258
 259         QPointF titlePointF = QPoint(
 260                 option.rect.x()+SPACER,
 261                 option.rect.y()+option.rect.height()-fmBig.descent());
 262         painter->setFont(fontBig);
 263
 264         painter->drawText(titlePointF,qVariantValue<QString>(index.data()));
 265     }
 266
 267     //// HIGHLIGHTING SELECTED ITEM
 268     //if (option.state & QStyle::State_Selected)
 269         //painter->fillRect(option.rect, option.palette.highlight());
 270
 271     painter->restore();
 272 }
 273
 274 QSize Delegate::sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const
 275 {
 276     Q_UNUSED(option)
 277
 278     if (index.internalId() == 0) // time group
 279     {
 280         return QSize(40,40);
 281     }
 282     else // event
 283     {
 284         return QSize(100,100);
 285     }
 286 }
 287
 288 bool Delegate::hasParent( const QModelIndex &index ) const
 289 {
 290     if( index.parent().isValid() )
 291         return true;
 292     else
 293         return false;
 294 }
 295
 296 bool Delegate::isLast( const QModelIndex &index ) const
 297 {
 298     if(!hasParent(index))
 299         return false; // what should be returned here?
 300
 301     if(index.row() >= (index.model()->rowCount(index.parent())-1))
 302         return true;
 303     else
 304         return false;
 305 }
 306
 307 bool Delegate::isExpanded( const QModelIndex &index ) const
 308 {
 309     if( !mViewPtr )
 310         return false;
 311     else
 312         return mViewPtr->isExpanded( index );
 313 }
 314
 315 Delegate::ControlId Delegate::whichControlClicked(const QModelIndex &aIndex, const QPoint &aPoint) const
 316 {
 317     if(!hasParent(aIndex)) // time-group item (root item)
 318         return ControlNone;
 319
 320     QListIterator<ControlId> i(mControls.keys());
 321     while (i.hasNext())
 322     {
 323         ControlId id = i.next();
 324         if(mControls[id]->drawRect(static_cast<QTreeView*>(parent())->visualRect(aIndex)).contains(aPoint))
 325         {
 326             if(id == WarningControl)
 327             {
 328                 if(static_cast<Event*>(aIndex.internalPointer())->hasTimeConflict())
 329                     return id;
 330             }
 331             else
 332                 return id;
 333         }
 334     }
 335
 336     return ControlNone;
 337 }
 338
 339 void Delegate::defineControls()
 340 {
 341     Control *control;
 342     QPoint p(0,0);
 343     // FAVOURITE ICONs
 344     // on
 345     control = new Control(FavouriteControlOn,QString(":icons/favourite-onBig.png"));
 346     p = QPoint(0,SPACER);
 347     p.setX(p.x()-control->image()->width()-SPACER);
 348     control->setDrawPoint(p);
 349     mControls.insert(FavouriteControlOn,control);
 350     // off
 351     control = new Control(FavouriteControlOff,QString(":icons/favourite-offBig.png"));
 352     p = QPoint(0,SPACER);
 353     p.setX(p.x()-control->image()->width()-SPACER);
 354     control->setDrawPoint(p);
 355     mControls.insert(FavouriteControlOff,control);
 356
 357 #ifdef MAEMO
 358     // ALARM ICONs
 359     // on
 360     control = new Control(AlarmControlOn,QString(":icons/alarm-onBig.png"));
 361     p = mControls[FavouriteControlOn]->drawPoint();
 362     p.setX(p.x()-control->image()->width()-SPACER);
 363     control->setDrawPoint(p);
 364     mControls.insert(AlarmControlOn,control);
 365     // off
 366     control = new Control(AlarmControlOff,QString(":icons/alarm-offBig.png"));
 367     p = mControls[FavouriteControlOff]->drawPoint();
 368     p.setX(p.x()-control->image()->width()-SPACER);
 369     control->setDrawPoint(p);
 370     mControls.insert(AlarmControlOff,control);
 371
 372     // MAP ICON
 373     control = new Control(MapControl,QString(":icons/compassBig.png"));
 374     p = mControls[AlarmControlOn]->drawPoint();
 375     p.setX(p.x()-control->image()->width()-SPACER);
 376     control->setDrawPoint(p);
 377     mControls.insert(MapControl,control);
 378 #else
 379     // MAP ICON
 380     control = new Control(MapControl,QString(":icons/compassBig.png"));
 381     p = mControls[FavouriteControlOn]->drawPoint();
 382     p.setX(p.x()-control->image()->width()-SPACER);
 383     control->setDrawPoint(p);
 384     mControls.insert(MapControl,control);
 385 #endif
 386
 387     // WARNING ICON
 388     control = new Control(WarningControl,QString(":icons/exclamation.png"));
 389     p = mControls[MapControl]->drawPoint();
 390     p.setX(p.x()-control->image()->width()-SPACER);
 391     control->setDrawPoint(p);
 392     mControls.insert(WarningControl,control);
 393 }
 394
 395 bool Delegate::isPointFromRect(const QPoint &aPoint, const QRect &aRect) const
 396 {
 397     if( (aPoint.x()>=aRect.left() && aPoint.x()<=aRect.right()) && (aPoint.y()>=aRect.top() && aPoint.y()<=aRect.bottom()) )
 398         return true;
 399
 400     return false;
 401 }
 402
 403 int Delegate::numberOfFavourities(const QModelIndex &index) const
 404 {
 405     if(index.parent().isValid()) // it's event, not time-group
 406         return 0;
 407
 408     int nrofFavs = 0;
 409     for(int i=0; i<index.model()->rowCount(index); i++)
 410         if(static_cast<Event*>(index.child(i,0).internalPointer())->isFavourite())
 411             nrofFavs++;
 412
 413     return nrofFavs;
 414 }
 415
 416 int Delegate::numberOfAlarms(const QModelIndex &index) const
 417 {
 418     if(index.parent().isValid()) // it's event, not time-group
 419         return 0;
 420
 421     int nrofAlarms = 0;
 422     for(int i=0; i<index.model()->rowCount(index); i++)
 423         if(static_cast<Event*>(index.child(i,0).internalPointer())->hasAlarm())
 424             nrofAlarms++;
 425
 426     return nrofAlarms;
 427 }
 428