src/mvc/delegate.cpp

   1 /*
   2  * Copyright (C) 2010 Ixonos Plc.
   3  * Copyright (C) 2011 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     QColor bkgrColor = option.palette.color(QPalette::Background);
  59     //QColor bkgrColor = QColor(0xAA,0xAA,0xAA);
  60     QColor conflictColor = Qt::yellow;
  61
  62     QColor textColor = option.palette.color(QPalette::Text);
  63     QPen borderPen(textColor);
  64     if(hasParent(index))
  65     {
  66         // entry horizontal layout:
  67         // * spacer (aka y position of image)
  68         // * image
  69         // * rest is text, which is 1 line of title with big letters and 2 lines of Presenter and Track
  70         int aux = option.rect.height() - SPACER - mControls[FavouriteControlOn]->image()->height();
  71         Event *event = static_cast<Event*>(index.internalPointer());
  72         // font SMALL
  73         QFont fontSmall = option.font;
  74         fontSmall.setBold(false);
  75         fontSmall.setPixelSize(aux*0.2);
  76         QFontMetrics fmSmall(fontSmall);
  77         // font SMALL bold
  78         QFont fontSmallB = fontSmall;
  79         fontSmallB.setBold(true);
  80         QFontMetrics fmSmallB(fontSmallB);
  81
  82         // font BIG
  83         QFont fontBig = option.font;
  84         fontBig.setBold(false);
  85         fontBig.setPixelSize(aux*0.33);
  86         QFontMetrics fmBig(fontBig);
  87         // font BIG bold
  88         QFont fontBigB = fontBig;
  89         fontBigB.setBold(true);
  90         QFontMetrics fmBigB(fontBigB);
  91
  92         //int spacer = (fmSmall.boundingRect("999").width() < SPACER) ? SPACER : fmSmall.boundingRect("999").width();
  93
  94         //Time conflicts are colored differently
  95         if(event->hasTimeConflict())
  96             bkgrColor = conflictColor;
  97
  98         QLinearGradient itemGradient(option.rect.topLeft(), option.rect.bottomLeft());
  99         itemGradient.setColorAt(0.0, bkgrColor);
 100         itemGradient.setColorAt(1.0, bkgrColor);
 101
 102         if(isLast(index))
 103         {
 104             QPainterPath endPath;
 105             endPath.moveTo(option.rect.topLeft());
 106             endPath.lineTo(option.rect.bottomLeft()-QPoint(0, RADIUS));
 107             endPath.arcTo(option.rect.left(), option.rect.bottom()-2*RADIUS, 2*RADIUS, 2*RADIUS, 180, 90);
 108             endPath.lineTo(option.rect.bottomRight()-QPoint(RADIUS, 0));
 109             endPath.arcTo(option.rect.right()-2*RADIUS, option.rect.bottom()-2*RADIUS, 2*RADIUS, 2*RADIUS, 270, 90);
 110             endPath.lineTo(option.rect.topRight());
 111
 112             //painter->setBrush( bkgrColor );
 113             painter->setBrush(itemGradient);
 114             painter->setPen(Qt::NoPen);
 115             painter->drawPath(endPath);
 116             painter->setPen(borderPen);
 117
 118             painter->setFont(option.font);
 119         }
 120         else // middle elements
 121         {
 122             //painter->setBrush( bkgrColor );
 123             painter->setBrush(itemGradient);
 124             painter->setPen(Qt::NoPen);
 125             painter->drawRect(option.rect);
 126
 127             painter->setPen(borderPen);
 128             /*
 129             // vertical lines
 130             painter->drawLine(option.rect.topLeft(), option.rect.bottomLeft());
 131             painter->drawLine(option.rect.topRight(), option.rect.bottomRight());
 132             */
 133             // horizontal lines
 134             painter->drawLine(option.rect.bottomLeft(), option.rect.bottomRight());
 135
 136             painter->setFont(option.font);
 137         }
 138
 139         // draw Controls
 140         foreach(Control* c, mControls.values()) {
 141             c->setEnabled(false);
 142         }
 143         if(event->isFavourite())
 144             mControls[FavouriteControlOn]->paint(painter, option.rect);
 145         else
 146             mControls[FavouriteControlOff]->paint(painter, option.rect);
 147 #ifdef MAEMO
 148         if(event->hasAlarm())
 149             mControls[AlarmControlOn]->paint(painter, option.rect);
 150         else
 151             mControls[AlarmControlOff]->paint(painter, option.rect);
 152 #endif
 153         if(event->hasTimeConflict())
 154             mControls[WarningControl]->paint(painter, option.rect);
 155
 156         // draw texts
 157         // it starts just below the image
 158         // ("position of text" is lower-left angle of the first letter,
 159         //  so the first line is actually at the same height as the image)
 160         QPointF titlePointF(option.rect.x() + SPACER,
 161                             option.rect.y() + SPACER + mControls[FavouriteControlOn]->image()->height());
 162         QTime start = event->start().time();
 163         painter->setFont(fontBig);
 164         painter->drawText(titlePointF,start.toString("hh:mm") + "-" + start.addSecs(event->duration()).toString("hh:mm") + ", " + event->roomName());
 165         // title
 166         titlePointF.setY(titlePointF.y()+fmBig.height()-fmBig.descent());
 167         painter->setFont(fontBigB);
 168         QString title = event->title();
 169         if(fmBigB.boundingRect(title).width() > (option.rect.width()-2*SPACER)) // the title won't fit the screen
 170         {
 171             // chop words from the end
 172             while( (fmBigB.boundingRect(title + "...").width() > (option.rect.width()-2*SPACER)) && !title.isEmpty())
 173             {
 174                 title.chop(1);
 175                 // chop characters one-by-one from the end
 176                 while( (!title.at(title.length()-1).isSpace()) && !title.isEmpty())
 177                 {
 178                     title.chop(1);
 179                 }
 180             }
 181             title += "...";
 182         }
 183         painter->drawText(titlePointF,title);
 184         // persons
 185         titlePointF.setY(titlePointF.y()+fmSmall.height()-fmSmall.descent());
 186         painter->setFont(fontSmall);
 187         QString presenterPrefix = event->persons().count() < 2 ? "Presenter" : "Presenters";
 188         painter->drawText(titlePointF,presenterPrefix + ": " + event->persons().join(" and "));
 189         // track
 190         titlePointF.setY(titlePointF.y()+fmSmall.height()-fmSmall.descent());
 191         painter->drawText(titlePointF,"Track: " + Track::retrieveTrackName(event->trackId()));
 192     }
 193     else // doesn't have parent - time-groups' elements (top items)
 194     {
 195         QFont fontSmall = option.font;
 196         fontSmall.setBold(true);
 197         fontSmall.setPixelSize(option.rect.height()*scaleFactor1);
 198         QFontMetrics fmSmall(fontSmall);
 199
 200         QFont fontBig = option.font;
 201         fontBig.setBold(true);
 202         fontBig.setPixelSize(option.rect.height()*scaleFactor2);
 203         QFontMetrics fmBig(fontBig);
 204
 205         int spacer = (fmSmall.boundingRect("999").width() < SPACER) ? SPACER : fmSmall.boundingRect("999").width();
 206
 207         QLinearGradient titleGradient(option.rect.topLeft(), option.rect.topRight());
 208         bkgrColor = option.palette.color(QPalette::Highlight);
 209         textColor = option.palette.color(QPalette::HighlightedText);
 210         titleGradient.setColorAt(0.0, bkgrColor);
 211         titleGradient.setColorAt(1.0, bkgrColor);
 212
 213         QPainterPath titlePath;
 214         if(isExpanded(index))
 215         {
 216             titlePath.moveTo(option.rect.bottomLeft());
 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());
 222             titlePath.closeSubpath();
 223         }
 224         else
 225         {
 226             titlePath.lineTo(option.rect.topLeft()+QPoint(0, RADIUS));
 227             titlePath.arcTo(option.rect.left(), option.rect.top(), 2*RADIUS, 2*RADIUS, 180, -90);
 228             titlePath.lineTo(option.rect.topRight()-QPoint(RADIUS, 0));
 229             titlePath.arcTo(option.rect.right()-2*RADIUS, option.rect.top(), 2*RADIUS, 2*RADIUS, 90, -90);
 230             titlePath.lineTo(option.rect.bottomRight()-QPoint(0, RADIUS));
 231             titlePath.arcTo(option.rect.right()-2*RADIUS, option.rect.bottom()-2*RADIUS, 2*RADIUS, 2*RADIUS, 0, -90);
 232             titlePath.lineTo(option.rect.bottomLeft()+QPoint(RADIUS, 0));
 233             titlePath.arcTo(option.rect.left(), option.rect.bottom()-2*RADIUS, 2*RADIUS, 2*RADIUS, 270, -90);
 234             titlePath.closeSubpath();
 235         }
 236
 237         painter->setBrush(titleGradient);
 238         painter->setPen(borderPen);
 239         painter->drawPath(titlePath);
 240
 241         // draw icons
 242         borderPen.setColor(textColor);
 243         painter->setPen(borderPen);
 244         painter->setFont(fontSmall);
 245         QImage *image = mControls[FavouriteControlOn]->image();
 246         QPoint drawPoint =
 247             option.rect.topRight()
 248             - QPoint(
 249                     spacer + image->width(),
 250                     - option.rect.height()/2 + image->height()/2);
 251         painter->drawImage(drawPoint,*image);
 252         painter->drawText(drawPoint+QPoint(image->width()+2, image->height() - 2),
 253                 QString::number(numberOfFavourities(index)));
 254 #ifdef MAEMO
 255         drawPoint.setX(drawPoint.x() - spacer - image->width());
 256         painter->drawImage(drawPoint,*mControls[AlarmControlOn]->image());
 257         painter->drawText(drawPoint+QPoint(image->width()+2, image->height() - 2),
 258                 QString::number(numberOfAlarms(index)));
 259 #endif
 260         // draw texts
 261         QString numEvents = QString::number(index.model()->rowCount(index)).append("/");
 262         drawPoint.setX(drawPoint.x() - spacer - fmSmall.boundingRect(numEvents).width());
 263         drawPoint.setY(drawPoint.y()+image->height() - 2);
 264         painter->drawText(drawPoint,numEvents);
 265
 266         QPointF titlePointF = QPoint(
 267                 option.rect.x()+SPACER,
 268                 option.rect.y()+option.rect.height()-fmBig.descent());
 269         painter->setFont(fontBig);
 270
 271         painter->drawText(titlePointF,qVariantValue<QString>(index.data()));
 272     }
 273
 274     //// HIGHLIGHTING SELECTED ITEM
 275     //if (option.state & QStyle::State_Selected)
 276         //painter->fillRect(option.rect, option.palette.highlight());
 277
 278     painter->restore();
 279 }
 280
 281 QSize Delegate::sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const
 282 {
 283     Q_UNUSED(option)
 284
 285     if (index.internalId() == 0) // time group
 286     {
 287         return QSize(40,40);
 288     }
 289     else // event
 290     {
 291         return QSize(100,100);
 292     }
 293 }
 294
 295 bool Delegate::hasParent( const QModelIndex &index ) const
 296 {
 297     if( index.parent().isValid() )
 298         return true;
 299     else
 300         return false;
 301 }
 302
 303 bool Delegate::isLast( const QModelIndex &index ) const
 304 {
 305     if(!hasParent(index))
 306         return false; // what should be returned here?
 307
 308     if(index.row() >= (index.model()->rowCount(index.parent())-1))
 309         return true;
 310     else
 311         return false;
 312 }
 313
 314 bool Delegate::isExpanded( const QModelIndex &index ) const
 315 {
 316     if( !mViewPtr )
 317         return false;
 318     else
 319         return mViewPtr->isExpanded( index );
 320 }
 321
 322 Delegate::ControlId Delegate::whichControlClicked(const QModelIndex &aIndex, const QPoint &aPoint) const
 323 {
 324     if(!hasParent(aIndex)) // time-group item (root item)
 325         return ControlNone;
 326
 327     QListIterator<ControlId> i(mControls.keys());
 328     while (i.hasNext())
 329     {
 330         ControlId id = i.next();
 331         Control *control = mControls[id];
 332         if (control->enabled()
 333             and control->drawRect(static_cast<QTreeView*>(parent())->visualRect(aIndex)).contains(aPoint))
 334         {
 335             return id;
 336         }
 337     }
 338
 339     return ControlNone;
 340 }
 341
 342 Delegate::Control::Control(ControlId aControlId, const QString &aImageName, const Control* prev_control)
 343     : mId(aControlId)
 344     , mImage(new QImage(aImageName))
 345     , mDrawPoint(QPoint(0,0))
 346     , mEnabled(false)
 347 {
 348     QPoint p;
 349     if (prev_control == NULL) {
 350         p = QPoint(0, SPACER);
 351     } else {
 352         p = prev_control->drawPoint();
 353     }
 354     p.setX(p.x()-image()->width()-SPACER);
 355     setDrawPoint(p);
 356 }
 357
 358 void Delegate::Control::paint(QPainter* painter, const QRect rect)
 359 {
 360     painter->drawImage(drawPoint(rect),*image());
 361     setEnabled(true);
 362 }
 363
 364 void Delegate::defineControls()
 365 {
 366     // FAVOURITE ICONs
 367     // on
 368     mControls.insert(FavouriteControlOn, new Control(FavouriteControlOn, QString(":icons/emblem-new.png"), NULL));
 369     // off
 370     mControls.insert(FavouriteControlOff, new Control(FavouriteControlOff, QString(":icons/emblem-new-off.png"), NULL));
 371
 372 #ifdef MAEMO
 373     // ALARM ICONs
 374     // on
 375     mControls.insert(AlarmControlOn,
 376                     new Control(AlarmControlOn, QString(":icons/appointment-soon.png"), mControls[FavouriteControlOn]));
 377     // off
 378     mControls.insert(AlarmControlOff,
 379                     new Control(AlarmControlOff, QString(":icons/appointment-soon-off.png"), mControls[FavouriteControlOff]));
 380 #endif
 381
 382     // WARNING ICON
 383     mControls.insert(WarningControl,
 384                     new Control(WarningControl, QString(":icons/dialog-warning.png"), mControls[FavouriteControlOn]));
 385 }
 386
 387 bool Delegate::isPointFromRect(const QPoint &aPoint, const QRect &aRect) const
 388 {
 389     if( (aPoint.x()>=aRect.left() && aPoint.x()<=aRect.right()) && (aPoint.y()>=aRect.top() && aPoint.y()<=aRect.bottom()) )
 390         return true;
 391
 392     return false;
 393 }
 394
 395 int Delegate::numberOfFavourities(const QModelIndex &index) const
 396 {
 397     if(index.parent().isValid()) // it's event, not time-group
 398         return 0;
 399
 400     int nrofFavs = 0;
 401     for(int i=0; i<index.model()->rowCount(index); i++)
 402         if(static_cast<Event*>(index.child(i,0).internalPointer())->isFavourite())
 403             nrofFavs++;
 404
 405     return nrofFavs;
 406 }
 407
 408 int Delegate::numberOfAlarms(const QModelIndex &index) const
 409 {
 410     if(index.parent().isValid()) // it's event, not time-group
 411         return 0;
 412
 413     int nrofAlarms = 0;
 414     for(int i=0; i<index.model()->rowCount(index); i++)
 415         if(static_cast<Event*>(index.child(i,0).internalPointer())->hasAlarm())
 416             nrofAlarms++;
 417
 418     return nrofAlarms;
 419 }
 420