src/mvc/delegate.cpp

   1 /*
   2  * Copyright (C) 2010 Ixonos Plc.
   3  * Copyright (C) 2011-2015 Philipp Spitzer, gregor herrmann, Stefan Stahl
   4  *
   5  * This file is part of ConfClerk.
   6  *
   7  * ConfClerk is free software: you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License as published by the Free
   9  * Software Foundation, either version 2 of the License, or (at your option)
  10  * any later version.
  11  *
  12  * ConfClerk is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  14  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  15  * more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along with
  18  * ConfClerk.  If not, see <http://www.gnu.org/licenses/>.
  19  */
  20 #include "delegate.h"
  21 #include "eventmodel.h"
  22 #include "track.h"
  23
  24 #include <QDebug>
  25 #include <QPainter>
  26
  27 #include "room.h"
  28
  29 const int RADIUS = 10;
  30 const int SPACER = 10;
  31
  32 const double scaleFactor1 = 0.4;
  33 const double scaleFactor2 = 0.8;
  34
  35 Delegate::Delegate(QTreeView *aParent)
  36     : QItemDelegate(aParent)
  37     , mViewPtr(aParent)
  38 {
  39     mControls.clear();
  40     defineControls();
  41 }
  42
  43 Delegate::~Delegate()
  44 {
  45     QListIterator<ControlId> i(mControls.keys());
  46     while (i.hasNext())
  47     {
  48         delete mControls[i.next()]->image();
  49     }
  50 }
  51
  52 void Delegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
  53 {
  54     if (!mViewPtr)
  55         return;
  56
  57     painter->save();
  58
  59     QColor textColor = option.palette.color(QPalette::Text);
  60
  61     if(hasParent(index))
  62     {
  63         // entry horizontal layout:
  64         // * spacer (aka y position of image)
  65         // * image
  66         // * rest is text, which is 1 line of title with big letters and 2 lines of Presenter and Track
  67         int aux = option.rect.height() - SPACER - mControls[FavouriteControlStrong]->image()->height();
  68         Event *event = static_cast<Event*>(index.internalPointer());
  69
  70         // font SMALL
  71         QFont fontSmall = option.font;
  72         fontSmall.setBold(false);
  73         fontSmall.setPixelSize(aux*0.2);
  74         QFontMetrics fmSmall(fontSmall);
  75         // font SMALL bold
  76         QFont fontSmallB = fontSmall;
  77         fontSmallB.setBold(true);
  78
  79         // font BIG
  80         QFont fontBig = option.font;
  81         fontBig.setBold(false);
  82         fontBig.setPixelSize(aux*0.33);
  83         QFontMetrics fmBig(fontBig);
  84
  85         // font BIG bold
  86         QFont fontBigB = fontBig;
  87         fontBigB.setBold(true);
  88         QFontMetrics fmBigB(fontBigB);
  89
  90         // background (in case of time conflicts)
  91         if(event->hasTimeConflict()) {
  92             painter->setBrush(Qt::yellow);
  93             painter->setPen(Qt::NoPen);
  94             painter->drawRect(option.rect);
  95         }
  96
  97         // background (without time conflicts)
  98         else {
  99             QStyleOption styleOption;
 100             styleOption.rect = option.rect;
 101             qApp->style()->drawPrimitive(QStyle::PE_PanelItemViewItem, &styleOption, painter, mViewPtr);
 102         }
 103
 104         // draw Controls
 105         foreach(Control* c, mControls.values()) {
 106             c->setEnabled(false);
 107         }
 108         switch (event->favourite()) {
 109         case Favourite_strong:
 110             mControls[FavouriteControlStrong]->paint(painter, option.rect);
 111             break;
 112         case Favourite_weak:
 113             mControls[FavouriteControlWeak]->paint(painter, option.rect);
 114             break;
 115         case Favourite_no:
 116             mControls[FavouriteControlNo]->paint(painter, option.rect);
 117             break;
 118         }
 119
 120         if(event->hasAlarm())
 121             mControls[AlarmControlOn]->paint(painter, option.rect);
 122         else
 123             mControls[AlarmControlOff]->paint(painter, option.rect);
 124
 125         if(event->hasTimeConflict())
 126             mControls[WarningControl]->paint(painter, option.rect);
 127
 128         // draw texts
 129         // it starts just below the image
 130         // ("position of text" is lower-left angle of the first letter,
 131         //  so the first line is actually at the same height as the image)
 132         painter->setPen(QPen(event->hasTimeConflict() ? Qt::black : textColor));
 133         QPointF titlePointF(option.rect.x() + SPACER,
 134                             option.rect.y() + SPACER + mControls[FavouriteControlStrong]->image()->height());
 135         QTime start = event->start().time();
 136         painter->setFont(fontBig);
 137         painter->drawText(titlePointF,start.toString("hh:mm") + "-" + start.addSecs(event->duration()).toString("hh:mm") + ", " + event->roomName());
 138
 139         // title
 140         titlePointF.setY(titlePointF.y()+fmBig.height()-fmBig.descent());
 141         painter->setFont(fontBigB);
 142         QString title = event->title();
 143         if(fmBigB.boundingRect(title).width() > (option.rect.width()-2*SPACER)) // the title won't fit the screen
 144         {
 145             // chop words from the end
 146             while( (fmBigB.boundingRect(title + "...").width() > (option.rect.width()-2*SPACER)) && !title.isEmpty())
 147             {
 148                 title.chop(1);
 149                 // chop characters one-by-one from the end
 150                 while( (!title.at(title.length()-1).isSpace()) && !title.isEmpty())
 151                 {
 152                     title.chop(1);
 153                 }
 154             }
 155             title += "...";
 156         }
 157         painter->drawText(titlePointF,title);
 158
 159         // persons
 160         titlePointF.setY(titlePointF.y()+fmSmall.height()-fmSmall.descent());
 161         painter->setFont(fontSmall);
 162         QString presenterPrefix = event->persons().count() < 2 ? "Presenter" : "Presenters";
 163         painter->drawText(titlePointF,presenterPrefix + ": " + event->persons().join(" and "));
 164
 165         // track
 166         titlePointF.setY(titlePointF.y()+fmSmall.height()-fmSmall.descent());
 167         painter->drawText(titlePointF,"Track: " + Track::retrieveTrackName(event->trackId()));
 168     }
 169
 170     else // doesn't have parent - time-groups' elements (top items)
 171     {
 172         int numFav = numberOfFavourities(index);
 173         int numAlarm = numberOfAlarms(index);
 174
 175         QStyleOptionButton styleOptionButton;
 176         styleOptionButton.rect = option.rect;
 177         if (isExpanded(index)) styleOptionButton.state = QStyle::State_Sunken;
 178         // styleOptionButton.text = qVariantValue<QString>(index.data());
 179         qApp->style()->drawPrimitive(QStyle::PE_PanelButtonCommand, &styleOptionButton, painter, mViewPtr);
 180         // qApp->style()->drawControl(QStyle::CE_PushButtonLabel, &styleOptionButton, painter, mViewPtr);
 181         // qApp->style()->drawPrimitive(QStyle::PE_IndicatorArrowDown, &styleOptionButton, painter, mViewPtr);
 182
 183         QFont fontSmall = option.font;
 184         fontSmall.setBold(true);
 185         fontSmall.setPixelSize(option.rect.height()*scaleFactor1);
 186         QFontMetrics fmSmall(fontSmall);
 187
 188         QFont fontBig = option.font;
 189         fontBig.setBold(true);
 190         fontBig.setPixelSize(option.rect.height()*scaleFactor2);
 191         QFontMetrics fmBig(fontBig);
 192
 193         int spacer = (fmSmall.boundingRect("999").width() < SPACER) ? SPACER : fmSmall.boundingRect("999").width();
 194
 195         // draw icons
 196         painter->setPen(QPen(textColor));
 197         painter->setFont(fontSmall);
 198         QImage *image = mControls[numFav ? FavouriteControlStrong : FavouriteControlNo]->image();
 199         QPoint drawPoint =
 200             option.rect.topRight()
 201             - QPoint(
 202                     spacer + image->width(),
 203                     - option.rect.height()/2 + image->height()/2);
 204         painter->drawImage(drawPoint,*image);
 205         painter->drawText(drawPoint+QPoint(image->width()+2, image->height() - 2),
 206                 QString::number(numFav));
 207
 208         drawPoint.setX(drawPoint.x() - spacer - image->width());
 209         image = mControls[numAlarm ? AlarmControlOn : AlarmControlOff]->image();
 210         painter->drawImage(drawPoint,*image);
 211         painter->drawText(drawPoint+QPoint(image->width()+2, image->height() - 2),
 212                 QString::number(numAlarm));
 213
 214         // draw texts
 215         QString numEvents = QString::number(index.model()->rowCount(index)).append("/");
 216         drawPoint.setX(drawPoint.x() - spacer - fmSmall.boundingRect(numEvents).width());
 217         drawPoint.setY(drawPoint.y()+image->height() - 2);
 218         painter->drawText(drawPoint,numEvents);
 219
 220         QPointF titlePointF = QPoint(
 221                 option.rect.x()+SPACER,
 222                 option.rect.y()+option.rect.height()-fmBig.descent());
 223         painter->setFont(fontBig);
 224         painter->drawText(titlePointF,qVariantValue<QString>(index.data()));
 225     }
 226
 227     painter->restore();
 228 }
 229
 230 QSize Delegate::sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const
 231 {
 232     Q_UNUSED(option)
 233
 234     if (index.internalId() == 0) // time group
 235     {
 236         return QSize(40,40);
 237     }
 238     else // event
 239     {
 240         return QSize(100,100);
 241     }
 242 }
 243
 244 bool Delegate::hasParent( const QModelIndex &index ) const
 245 {
 246     if( index.parent().isValid() )
 247         return true;
 248     else
 249         return false;
 250 }
 251
 252 bool Delegate::isLast( const QModelIndex &index ) const
 253 {
 254     if(!hasParent(index))
 255         return false; // what should be returned here?
 256
 257     if(index.row() >= (index.model()->rowCount(index.parent())-1))
 258         return true;
 259     else
 260         return false;
 261 }
 262
 263 bool Delegate::isExpanded( const QModelIndex &index ) const
 264 {
 265     if( !mViewPtr )
 266         return false;
 267     else
 268         return mViewPtr->isExpanded( index );
 269 }
 270
 271 Delegate::ControlId Delegate::whichControlClicked(const QModelIndex &aIndex, const QPoint &aPoint) const
 272 {
 273     if(!hasParent(aIndex)) // time-group item (root item)
 274         return ControlNone;
 275
 276     QListIterator<ControlId> i(mControls.keys());
 277     while (i.hasNext())
 278     {
 279         ControlId id = i.next();
 280         Control *control = mControls[id];
 281         if (control->enabled()
 282             and control->drawRect(static_cast<QTreeView*>(parent())->visualRect(aIndex)).contains(aPoint))
 283         {
 284             return id;
 285         }
 286     }
 287
 288     return ControlNone;
 289 }
 290
 291 Delegate::Control::Control(ControlId aControlId, const QString &aImageName, const Control* prev_control)
 292     : mId(aControlId)
 293     , mImage(new QImage(aImageName))
 294     , mDrawPoint(QPoint(0,0))
 295     , mEnabled(false)
 296 {
 297     QPoint p;
 298     if (prev_control == NULL) {
 299         p = QPoint(0, SPACER);
 300     } else {
 301         p = prev_control->drawPoint();
 302     }
 303     p.setX(p.x()-image()->width()-SPACER);
 304     setDrawPoint(p);
 305 }
 306
 307 void Delegate::Control::paint(QPainter* painter, const QRect rect)
 308 {
 309     painter->drawImage(drawPoint(rect),*image());
 310     setEnabled(true);
 311 }
 312
 313 void Delegate::defineControls()
 314 {
 315     // FAVOURITE ICONs
 316     // strong
 317     mControls.insert(FavouriteControlStrong, new Control(FavouriteControlStrong, QString(":icons/favourite-on.png"), NULL));
 318     // weak
 319     mControls.insert(FavouriteControlWeak, new Control(FavouriteControlWeak, QString(":icons/favourite-weak.png"), NULL));
 320     // no
 321     mControls.insert(FavouriteControlNo, new Control(FavouriteControlNo, QString(":icons/favourite-off.png"), NULL));
 322
 323     // ALARM ICONs
 324     // on
 325     mControls.insert(AlarmControlOn,
 326                     new Control(AlarmControlOn, QString(":icons/alarm-on.png"), mControls[FavouriteControlStrong]));
 327     // off
 328     mControls.insert(AlarmControlOff,
 329                     new Control(AlarmControlOff, QString(":icons/alarm-off.png"), mControls[FavouriteControlNo]));
 330     // WARNING ICON
 331     mControls.insert(WarningControl,
 332                     new Control(WarningControl, QString(":icons/dialog-warning.png"), mControls[AlarmControlOff]));
 333         }
 334
 335 bool Delegate::isPointFromRect(const QPoint &aPoint, const QRect &aRect) const
 336 {
 337     if( (aPoint.x()>=aRect.left() && aPoint.x()<=aRect.right()) && (aPoint.y()>=aRect.top() && aPoint.y()<=aRect.bottom()) )
 338         return true;
 339
 340     return false;
 341 }
 342
 343 int Delegate::numberOfFavourities(const QModelIndex &index) const
 344 {
 345     if(index.parent().isValid()) // it's event, not time-group
 346         return 0;
 347
 348     int nrofFavs = 0;
 349     for(int i=0; i<index.model()->rowCount(index); i++)
 350         if(static_cast<Event*>(index.child(i,0).internalPointer())->favourite() != Favourite_no)
 351             nrofFavs++;
 352
 353     return nrofFavs;
 354 }
 355
 356 int Delegate::numberOfAlarms(const QModelIndex &index) const
 357 {
 358     if(index.parent().isValid()) // it's event, not time-group
 359         return 0;
 360
 361     int nrofAlarms = 0;
 362     for(int i=0; i<index.model()->rowCount(index); i++)
 363         if(static_cast<Event*>(index.child(i,0).internalPointer())->hasAlarm())
 364             nrofAlarms++;
 365
 366     return nrofAlarms;
 367 }
 368