src/mvc/delegate.cpp

   1 /*
   2  * Copyright (C) 2010 Ixonos Plc.
   3  * Copyright (C) 2011-2017 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 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
  58     QColor textColor = option.palette.color(QPalette::Text);
  59
  60     if(hasParent(index))
  61     {
  62         Event *event = static_cast<Event*>(index.internalPointer());
  63
  64         // determine severity of conflict
  65         Favourite eventTimeConflict = event->timeConflict(); // cache value as event->timeConflict is expensive
  66         enum ConflictSeverity {csNone, csWeak, csStrong} conflictSeverity = csNone;
  67         switch (event->favourite()) {
  68             case Favourite_strong:
  69                 conflictSeverity = (eventTimeConflict == Favourite_strong) ? csStrong : csNone;
  70                 break;
  71             case Favourite_weak:
  72                 conflictSeverity = (eventTimeConflict == Favourite_no) ? csNone : csWeak;
  73                 break;
  74             case Favourite_no:
  75                 conflictSeverity = csNone;
  76                 break;
  77         }
  78
  79         // entry horizontal layout:
  80         // * spacer (aka y position of image)
  81         // * image
  82         // * rest is text, which is 1 line of title with big letters and 2 lines of Presenter and Track
  83         int aux = option.rect.height() - SPACER - mControls[FavouriteControlStrong]->image()->height();
  84
  85         // font SMALL
  86         QFont fontSmall = option.font;
  87         fontSmall.setBold(false);
  88         fontSmall.setPixelSize(aux*0.2);
  89         QFontMetrics fmSmall(fontSmall);
  90         // font SMALL bold
  91         QFont fontSmallB = fontSmall;
  92         fontSmallB.setBold(true);
  93
  94         // font BIG
  95         QFont fontBig = option.font;
  96         fontBig.setBold(false);
  97         fontBig.setPixelSize(aux*0.33);
  98         QFontMetrics fmBig(fontBig);
  99
 100         // font BIG bold
 101         QFont fontBigB = fontBig;
 102         fontBigB.setBold(true);
 103         QFontMetrics fmBigB(fontBigB);
 104
 105         // background (in case of time conflicts)
 106         if (conflictSeverity != csNone) {
 107             painter->setBrush(conflictSeverity == csStrong ? Qt::yellow : QColor("lightyellow"));
 108             painter->setPen(Qt::NoPen);
 109             painter->drawRect(option.rect);
 110         }
 111
 112         // background (without time conflicts)
 113         else {
 114             QStyleOption styleOption;
 115             styleOption.rect = option.rect;
 116             qApp->style()->drawPrimitive(QStyle::PE_PanelItemViewItem, &styleOption, painter, mViewPtr);
 117         }
 118
 119         // draw Controls
 120         foreach(Control* c, mControls.values()) {
 121             c->setEnabled(false);
 122         }
 123         switch (event->favourite()) {
 124         case Favourite_strong:
 125             mControls[FavouriteControlStrong]->paint(painter, option.rect);
 126             break;
 127         case Favourite_weak:
 128             mControls[FavouriteControlWeak]->paint(painter, option.rect);
 129             break;
 130         case Favourite_no:
 131             mControls[FavouriteControlNo]->paint(painter, option.rect);
 132             break;
 133         }
 134
 135         if(event->hasAlarm())
 136             mControls[AlarmControlOn]->paint(painter, option.rect);
 137         else
 138             mControls[AlarmControlOff]->paint(painter, option.rect);
 139
 140         if(eventTimeConflict != Favourite_no)
 141             mControls[WarningControl]->paint(painter, option.rect);
 142
 143         // draw texts
 144         // it starts just below the image
 145         // ("position of text" is lower-left angle of the first letter,
 146         //  so the first line is actually at the same height as the image)
 147         painter->setPen(QPen(conflictSeverity != csNone ? Qt::black : textColor));
 148         QPointF titlePointF(option.rect.x() + SPACER,
 149                             option.rect.y() + SPACER + mControls[FavouriteControlStrong]->image()->height());
 150         QTime start = event->start().time();
 151         painter->setFont(fontBig);
 152         painter->drawText(titlePointF,start.toString("hh:mm") + "-" + start.addSecs(event->duration()).toString("hh:mm") + ", " + event->roomName());
 153
 154         // title
 155         titlePointF.setY(titlePointF.y()+fmBig.height()-fmBig.descent());
 156         painter->setFont(fontBigB);
 157         QString title = event->title();
 158         if(fmBigB.boundingRect(title).width() > (option.rect.width()-2*SPACER)) // the title won't fit the screen
 159         {
 160             // chop words from the end
 161             while( (fmBigB.boundingRect(title + "...").width() > (option.rect.width()-2*SPACER)) && !title.isEmpty())
 162             {
 163                 title.chop(1);
 164                 // chop characters one-by-one from the end
 165                 while( (!title.at(title.length()-1).isSpace()) && !title.isEmpty())
 166                 {
 167                     title.chop(1);
 168                 }
 169             }
 170             title += "...";
 171         }
 172         painter->drawText(titlePointF,title);
 173
 174         // persons
 175         titlePointF.setY(titlePointF.y()+fmSmall.height()-fmSmall.descent());
 176         painter->setFont(fontSmall);
 177         QString presenterPrefix = event->persons().count() < 2 ? "Presenter" : "Presenters";
 178         painter->drawText(titlePointF,presenterPrefix + ": " + event->persons().join(" and "));
 179
 180         // track
 181         titlePointF.setY(titlePointF.y()+fmSmall.height()-fmSmall.descent());
 182         painter->drawText(titlePointF,"Track: " + Track::retrieveTrackName(event->trackId()));
 183     }
 184
 185     else // doesn't have parent - time-groups' elements (top items)
 186     {
 187         int numFav = numberOfFavourites(index);
 188         int numAlarm = numberOfAlarms(index);
 189
 190         QStyleOptionButton styleOptionButton;
 191         styleOptionButton.rect = option.rect;
 192         if (isExpanded(index)) styleOptionButton.state = QStyle::State_Sunken;
 193         // styleOptionButton.text = qVariantValue<QString>(index.data());
 194         qApp->style()->drawPrimitive(QStyle::PE_PanelButtonCommand, &styleOptionButton, painter, mViewPtr);
 195         // qApp->style()->drawControl(QStyle::CE_PushButtonLabel, &styleOptionButton, painter, mViewPtr);
 196         // qApp->style()->drawPrimitive(QStyle::PE_IndicatorArrowDown, &styleOptionButton, painter, mViewPtr);
 197
 198         QFont fontSmall = option.font;
 199         fontSmall.setBold(true);
 200         fontSmall.setPixelSize(option.rect.height()*scaleFactor1);
 201         QFontMetrics fmSmall(fontSmall);
 202
 203         QFont fontBig = option.font;
 204         fontBig.setBold(true);
 205         fontBig.setPixelSize(option.rect.height()*scaleFactor2);
 206         QFontMetrics fmBig(fontBig);
 207
 208         int spacer = (fmSmall.boundingRect("999").width() < SPACER) ? SPACER : fmSmall.boundingRect("999").width();
 209
 210         // draw icons
 211         painter->setPen(QPen(textColor));
 212         painter->setFont(fontSmall);
 213         QImage *image = mControls[numFav ? FavouriteControlStrong : FavouriteControlNo]->image();
 214         QPoint drawPoint =
 215             option.rect.topRight()
 216             - QPoint(
 217                     spacer + image->width(),
 218                     - option.rect.height()/2 + image->height()/2);
 219         painter->drawImage(drawPoint,*image);
 220         painter->drawText(drawPoint+QPoint(image->width()+2, image->height() - 2),
 221                 QString::number(numFav));
 222
 223         drawPoint.setX(drawPoint.x() - spacer - image->width());
 224         image = mControls[numAlarm ? AlarmControlOn : AlarmControlOff]->image();
 225         painter->drawImage(drawPoint,*image);
 226         painter->drawText(drawPoint+QPoint(image->width()+2, image->height() - 2),
 227                 QString::number(numAlarm));
 228
 229         // draw texts
 230         QString numEvents = QString::number(index.model()->rowCount(index)).append("/");
 231         drawPoint.setX(drawPoint.x() - spacer - fmSmall.boundingRect(numEvents).width());
 232         drawPoint.setY(drawPoint.y()+image->height() - 2);
 233         painter->drawText(drawPoint,numEvents);
 234
 235         QPointF titlePointF = QPoint(
 236                 option.rect.x()+SPACER,
 237                 option.rect.y()+option.rect.height()-fmBig.descent());
 238         painter->setFont(fontBig);
 239         painter->drawText(titlePointF,index.data().value<QString>());
 240     }
 241
 242     painter->restore();
 243 }
 244
 245 QSize Delegate::sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const
 246 {
 247     Q_UNUSED(option)
 248
 249     if (index.internalId() == 0) // time group
 250     {
 251         return QSize(40,40);
 252     }
 253     else // event
 254     {
 255         return QSize(100,100);
 256     }
 257 }
 258
 259 bool Delegate::hasParent( const QModelIndex &index ) const
 260 {
 261     if( index.parent().isValid() )
 262         return true;
 263     else
 264         return false;
 265 }
 266
 267 bool Delegate::isLast( const QModelIndex &index ) const
 268 {
 269     if(!hasParent(index))
 270         return false; // what should be returned here?
 271
 272     if(index.row() >= (index.model()->rowCount(index.parent())-1))
 273         return true;
 274     else
 275         return false;
 276 }
 277
 278 bool Delegate::isExpanded( const QModelIndex &index ) const
 279 {
 280     if( !mViewPtr )
 281         return false;
 282     else
 283         return mViewPtr->isExpanded( index );
 284 }
 285
 286 Delegate::ControlId Delegate::whichControlClicked(const QModelIndex &aIndex, const QPoint &aPoint) const
 287 {
 288     if(!hasParent(aIndex)) // time-group item (root item)
 289         return ControlNone;
 290
 291     QListIterator<ControlId> i(mControls.keys());
 292     while (i.hasNext())
 293     {
 294         ControlId id = i.next();
 295         Control *control = mControls[id];
 296         if (control->enabled()
 297             and control->drawRect(static_cast<QTreeView*>(parent())->visualRect(aIndex)).contains(aPoint))
 298         {
 299             return id;
 300         }
 301     }
 302
 303     return ControlNone;
 304 }
 305
 306 Delegate::Control::Control(ControlId aControlId, const QString &aImageName, const Control* prev_control)
 307     : mId(aControlId)
 308     , mImage(new QImage(aImageName))
 309     , mDrawPoint(QPoint(0,0))
 310     , mEnabled(false)
 311 {
 312     QPoint p;
 313     if (prev_control == NULL) {
 314         p = QPoint(0, SPACER);
 315     } else {
 316         p = prev_control->drawPoint();
 317     }
 318     p.setX(p.x()-image()->width()-SPACER);
 319     setDrawPoint(p);
 320 }
 321
 322 void Delegate::Control::paint(QPainter* painter, const QRect rect)
 323 {
 324     painter->drawImage(drawPoint(rect),*image());
 325     setEnabled(true);
 326 }
 327
 328 void Delegate::defineControls()
 329 {
 330     // FAVOURITE ICONs
 331     // strong
 332     mControls.insert(FavouriteControlStrong, new Control(FavouriteControlStrong, QString(":icons/favourite-strong.png"), NULL));
 333     // weak
 334     mControls.insert(FavouriteControlWeak, new Control(FavouriteControlWeak, QString(":icons/favourite-weak.png"), NULL));
 335     // no
 336     mControls.insert(FavouriteControlNo, new Control(FavouriteControlNo, QString(":icons/favourite-no.png"), NULL));
 337
 338     // ALARM ICONs
 339     // on
 340     mControls.insert(AlarmControlOn,
 341                     new Control(AlarmControlOn, QString(":icons/alarm-on.png"), mControls[FavouriteControlStrong]));
 342     // off
 343     mControls.insert(AlarmControlOff,
 344                     new Control(AlarmControlOff, QString(":icons/alarm-off.png"), mControls[FavouriteControlNo]));
 345     // WARNING ICON
 346     mControls.insert(WarningControl,
 347                     new Control(WarningControl, QString(":icons/dialog-warning.png"), mControls[AlarmControlOff]));
 348         }
 349
 350 bool Delegate::isPointFromRect(const QPoint &aPoint, const QRect &aRect) const
 351 {
 352     if( (aPoint.x()>=aRect.left() && aPoint.x()<=aRect.right()) && (aPoint.y()>=aRect.top() && aPoint.y()<=aRect.bottom()) )
 353         return true;
 354
 355     return false;
 356 }
 357
 358 int Delegate::numberOfFavourites(const QModelIndex &index) const
 359 {
 360     if(index.parent().isValid()) // it's event, not time-group
 361         return 0;
 362
 363     int nrofFavs = 0;
 364     for(int i=0; i<index.model()->rowCount(index); i++)
 365         if(static_cast<Event*>(index.model()->index(i, 0, index).internalPointer())->favourite() != Favourite_no)
 366             nrofFavs++;
 367
 368     return nrofFavs;
 369 }
 370
 371 int Delegate::numberOfAlarms(const QModelIndex &index) const
 372 {
 373     if(index.parent().isValid()) // it's event, not time-group
 374         return 0;
 375
 376     int nrofAlarms = 0;
 377     for(int i=0; i<index.model()->rowCount(index); i++)
 378         if(static_cast<Event*>(index.model()->index(i, 0, index).internalPointer())->hasAlarm())
 379             nrofAlarms++;
 380
 381     return nrofAlarms;
 382 }
 383