src/mvc/delegate.cpp

   1 /*
   2  * Copyright (C) 2010 Ixonos Plc.
   3  * Copyright (C) 2011-2012 Philipp Spitzer, gregor herrmann
   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[FavouriteControlOn]->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         if(event->isFavourite())
 109             mControls[FavouriteControlOn]->paint(painter, option.rect);
 110         else
 111             mControls[FavouriteControlOff]->paint(painter, option.rect);
 112 #ifdef MAEMO
 113         if(event->hasAlarm())
 114             mControls[AlarmControlOn]->paint(painter, option.rect);
 115         else
 116             mControls[AlarmControlOff]->paint(painter, option.rect);
 117 #endif
 118         if(event->hasTimeConflict())
 119             mControls[WarningControl]->paint(painter, option.rect);
 120
 121         // draw texts
 122         // it starts just below the image
 123         // ("position of text" is lower-left angle of the first letter,
 124         //  so the first line is actually at the same height as the image)
 125         painter->setPen(QPen(event->hasTimeConflict() ? Qt::black : textColor));
 126         QPointF titlePointF(option.rect.x() + SPACER,
 127                             option.rect.y() + SPACER + mControls[FavouriteControlOn]->image()->height());
 128         QTime start = event->start().time();
 129         painter->setFont(fontBig);
 130         painter->drawText(titlePointF,start.toString("hh:mm") + "-" + start.addSecs(event->duration()).toString("hh:mm") + ", " + event->roomName());
 131
 132         // title
 133         titlePointF.setY(titlePointF.y()+fmBig.height()-fmBig.descent());
 134         painter->setFont(fontBigB);
 135         QString title = event->title();
 136         if(fmBigB.boundingRect(title).width() > (option.rect.width()-2*SPACER)) // the title won't fit the screen
 137         {
 138             // chop words from the end
 139             while( (fmBigB.boundingRect(title + "...").width() > (option.rect.width()-2*SPACER)) && !title.isEmpty())
 140             {
 141                 title.chop(1);
 142                 // chop characters one-by-one from the end
 143                 while( (!title.at(title.length()-1).isSpace()) && !title.isEmpty())
 144                 {
 145                     title.chop(1);
 146                 }
 147             }
 148             title += "...";
 149         }
 150         painter->drawText(titlePointF,title);
 151
 152         // persons
 153         titlePointF.setY(titlePointF.y()+fmSmall.height()-fmSmall.descent());
 154         painter->setFont(fontSmall);
 155         QString presenterPrefix = event->persons().count() < 2 ? "Presenter" : "Presenters";
 156         painter->drawText(titlePointF,presenterPrefix + ": " + event->persons().join(" and "));
 157
 158         // track
 159         titlePointF.setY(titlePointF.y()+fmSmall.height()-fmSmall.descent());
 160         painter->drawText(titlePointF,"Track: " + Track::retrieveTrackName(event->trackId()));
 161     }
 162
 163     else // doesn't have parent - time-groups' elements (top items)
 164     {
 165         int numFav = numberOfFavourities(index);
 166
 167         QStyleOptionButton styleOptionButton;
 168         styleOptionButton.rect = option.rect;
 169         if (isExpanded(index)) styleOptionButton.state = QStyle::State_Sunken;
 170         // styleOptionButton.text = qVariantValue<QString>(index.data());
 171         qApp->style()->drawPrimitive(QStyle::PE_PanelButtonCommand, &styleOptionButton, painter, mViewPtr);
 172         // qApp->style()->drawControl(QStyle::CE_PushButtonLabel, &styleOptionButton, painter, mViewPtr);
 173         // qApp->style()->drawPrimitive(QStyle::PE_IndicatorArrowDown, &styleOptionButton, painter, mViewPtr);
 174
 175         QFont fontSmall = option.font;
 176         fontSmall.setBold(true);
 177         fontSmall.setPixelSize(option.rect.height()*scaleFactor1);
 178         QFontMetrics fmSmall(fontSmall);
 179
 180         QFont fontBig = option.font;
 181         fontBig.setBold(true);
 182         fontBig.setPixelSize(option.rect.height()*scaleFactor2);
 183         QFontMetrics fmBig(fontBig);
 184
 185         int spacer = (fmSmall.boundingRect("999").width() < SPACER) ? SPACER : fmSmall.boundingRect("999").width();
 186
 187         // draw icons
 188         painter->setPen(QPen(textColor));
 189         painter->setFont(fontSmall);
 190         QImage *image = mControls[numFav ? FavouriteControlOn : FavouriteControlOff]->image();
 191         QPoint drawPoint =
 192             option.rect.topRight()
 193             - QPoint(
 194                     spacer + image->width(),
 195                     - option.rect.height()/2 + image->height()/2);
 196         painter->drawImage(drawPoint,*image);
 197         painter->drawText(drawPoint+QPoint(image->width()+2, image->height() - 2),
 198                 QString::number(numFav));
 199 #ifdef MAEMO
 200         drawPoint.setX(drawPoint.x() - spacer - image->width());
 201         painter->drawImage(drawPoint,*mControls[AlarmControlOn]->image());
 202         painter->drawText(drawPoint+QPoint(image->width()+2, image->height() - 2),
 203                 QString::number(numberOfAlarms(index)));
 204 #endif
 205         // draw texts
 206         QString numEvents = QString::number(index.model()->rowCount(index)).append("/");
 207         drawPoint.setX(drawPoint.x() - spacer - fmSmall.boundingRect(numEvents).width());
 208         drawPoint.setY(drawPoint.y()+image->height() - 2);
 209         painter->drawText(drawPoint,numEvents);
 210
 211         QPointF titlePointF = QPoint(
 212                 option.rect.x()+SPACER,
 213                 option.rect.y()+option.rect.height()-fmBig.descent());
 214         painter->setFont(fontBig);
 215         painter->drawText(titlePointF,qVariantValue<QString>(index.data()));
 216     }
 217
 218     painter->restore();
 219 }
 220
 221 QSize Delegate::sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const
 222 {
 223     Q_UNUSED(option)
 224
 225     if (index.internalId() == 0) // time group
 226     {
 227         return QSize(40,40);
 228     }
 229     else // event
 230     {
 231         return QSize(100,100);
 232     }
 233 }
 234
 235 bool Delegate::hasParent( const QModelIndex &index ) const
 236 {
 237     if( index.parent().isValid() )
 238         return true;
 239     else
 240         return false;
 241 }
 242
 243 bool Delegate::isLast( const QModelIndex &index ) const
 244 {
 245     if(!hasParent(index))
 246         return false; // what should be returned here?
 247
 248     if(index.row() >= (index.model()->rowCount(index.parent())-1))
 249         return true;
 250     else
 251         return false;
 252 }
 253
 254 bool Delegate::isExpanded( const QModelIndex &index ) const
 255 {
 256     if( !mViewPtr )
 257         return false;
 258     else
 259         return mViewPtr->isExpanded( index );
 260 }
 261
 262 Delegate::ControlId Delegate::whichControlClicked(const QModelIndex &aIndex, const QPoint &aPoint) const
 263 {
 264     if(!hasParent(aIndex)) // time-group item (root item)
 265         return ControlNone;
 266
 267     QListIterator<ControlId> i(mControls.keys());
 268     while (i.hasNext())
 269     {
 270         ControlId id = i.next();
 271         Control *control = mControls[id];
 272         if (control->enabled()
 273             and control->drawRect(static_cast<QTreeView*>(parent())->visualRect(aIndex)).contains(aPoint))
 274         {
 275             return id;
 276         }
 277     }
 278
 279     return ControlNone;
 280 }
 281
 282 Delegate::Control::Control(ControlId aControlId, const QString &aImageName, const Control* prev_control)
 283     : mId(aControlId)
 284     , mImage(new QImage(aImageName))
 285     , mDrawPoint(QPoint(0,0))
 286     , mEnabled(false)
 287 {
 288     QPoint p;
 289     if (prev_control == NULL) {
 290         p = QPoint(0, SPACER);
 291     } else {
 292         p = prev_control->drawPoint();
 293     }
 294     p.setX(p.x()-image()->width()-SPACER);
 295     setDrawPoint(p);
 296 }
 297
 298 void Delegate::Control::paint(QPainter* painter, const QRect rect)
 299 {
 300     painter->drawImage(drawPoint(rect),*image());
 301     setEnabled(true);
 302 }
 303
 304 void Delegate::defineControls()
 305 {
 306     // FAVOURITE ICONs
 307     // on
 308     mControls.insert(FavouriteControlOn, new Control(FavouriteControlOn, QString(":icons/favourite-on.png"), NULL));
 309     // off
 310     mControls.insert(FavouriteControlOff, new Control(FavouriteControlOff, QString(":icons/favourite-off.png"), NULL));
 311
 312 #ifdef MAEMO
 313     // ALARM ICONs
 314     // on
 315     mControls.insert(AlarmControlOn,
 316                     new Control(AlarmControlOn, QString(":icons/appointment-soon.png"), mControls[FavouriteControlOn]));
 317     // off
 318     mControls.insert(AlarmControlOff,
 319                     new Control(AlarmControlOff, QString(":icons/appointment-soon-off.png"), mControls[FavouriteControlOff]));
 320     // WARNING ICON
 321     mControls.insert(WarningControl,
 322                     new Control(WarningControl, QString(":icons/dialog-warning.png"), mControls[AlarmControlOff]));
 323 #else
 324     // WARNING ICON
 325     mControls.insert(WarningControl,
 326                     new Control(WarningControl, QString(":icons/dialog-warning.png"), mControls[FavouriteControlOn]));
 327 #endif
 328
 329 }
 330
 331 bool Delegate::isPointFromRect(const QPoint &aPoint, const QRect &aRect) const
 332 {
 333     if( (aPoint.x()>=aRect.left() && aPoint.x()<=aRect.right()) && (aPoint.y()>=aRect.top() && aPoint.y()<=aRect.bottom()) )
 334         return true;
 335
 336     return false;
 337 }
 338
 339 int Delegate::numberOfFavourities(const QModelIndex &index) const
 340 {
 341     if(index.parent().isValid()) // it's event, not time-group
 342         return 0;
 343
 344     int nrofFavs = 0;
 345     for(int i=0; i<index.model()->rowCount(index); i++)
 346         if(static_cast<Event*>(index.child(i,0).internalPointer())->isFavourite())
 347             nrofFavs++;
 348
 349     return nrofFavs;
 350 }
 351
 352 int Delegate::numberOfAlarms(const QModelIndex &index) const
 353 {
 354     if(index.parent().isValid()) // it's event, not time-group
 355         return 0;
 356
 357     int nrofAlarms = 0;
 358     for(int i=0; i<index.model()->rowCount(index); i++)
 359         if(static_cast<Event*>(index.child(i,0).internalPointer())->hasAlarm())
 360             nrofAlarms++;
 361
 362     return nrofAlarms;
 363 }
 364