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(borderPen);
 115             painter->drawPath(endPath);
 116
 117             painter->setFont(option.font);
 118         }
 119         else // middle elements
 120         {
 121             //painter->setBrush( bkgrColor );
 122             painter->setBrush(itemGradient);
 123             painter->setPen(Qt::NoPen);
 124             painter->drawRect(option.rect);
 125
 126             painter->setPen(borderPen);
 127             // vertical lines
 128             painter->drawLine(option.rect.topLeft(), option.rect.bottomLeft());
 129             painter->drawLine(option.rect.topRight(), option.rect.bottomRight());
 130             // horizontal lines
 131             painter->drawLine(option.rect.bottomLeft(), option.rect.bottomRight());
 132
 133             painter->setFont(option.font);
 134         }
 135
 136         // draw Controls
 137         foreach(Control* c, mControls.values()) {
 138             c->setEnabled(false);
 139         }
 140         if(event->isFavourite())
 141             mControls[FavouriteControlOn]->paint(painter, option.rect);
 142         else
 143             mControls[FavouriteControlOff]->paint(painter, option.rect);
 144 #ifdef MAEMO
 145         if(event->hasAlarm())
 146             mControls[AlarmControlOn]->paint(painter, option.rect);
 147         else
 148             mControls[AlarmControlOff]->paint(painter, option.rect);
 149 #endif
 150         if(event->hasTimeConflict())
 151             mControls[WarningControl]->paint(painter, option.rect);
 152
 153         // draw texts
 154         // it starts just below the image
 155         // ("position of text" is lower-left angle of the first letter,
 156         //  so the first line is actually at the same height as the image)
 157         QPointF titlePointF(option.rect.x() + SPACER,
 158                             option.rect.y() + SPACER + mControls[FavouriteControlOn]->image()->height());
 159         QTime start = event->start().time();
 160         painter->setFont(fontBig);
 161         painter->drawText(titlePointF,start.toString("hh:mm") + "-" + start.addSecs(event->duration()).toString("hh:mm") + ", " + event->roomName());
 162         // title
 163         titlePointF.setY(titlePointF.y()+fmBig.height()-fmBig.descent());
 164         painter->setFont(fontBigB);
 165         QString title = event->title();
 166         if(fmBigB.boundingRect(title).width() > (option.rect.width()-2*SPACER)) // the title won't fit the screen
 167         {
 168             // chop words from the end
 169             while( (fmBigB.boundingRect(title + "...").width() > (option.rect.width()-2*SPACER)) && !title.isEmpty())
 170             {
 171                 title.chop(1);
 172                 // chop characters one-by-one from the end
 173                 while( (!title.at(title.length()-1).isSpace()) && !title.isEmpty())
 174                 {
 175                     title.chop(1);
 176                 }
 177             }
 178             title += "...";
 179         }
 180         painter->drawText(titlePointF,title);
 181         // persons
 182         titlePointF.setY(titlePointF.y()+fmSmall.height()-fmSmall.descent());
 183         painter->setFont(fontSmall);
 184         painter->drawText(titlePointF,"Presenter(s): " + event->persons().join(" and "));
 185         // track
 186         titlePointF.setY(titlePointF.y()+fmSmall.height()-fmSmall.descent());
 187         painter->drawText(titlePointF,"Track: " + Track::retrieveTrackName(event->trackId()));
 188     }
 189     else // doesn't have parent - time-groups' elements (top items)
 190     {
 191         QFont fontSmall = option.font;
 192         fontSmall.setBold(true);
 193         fontSmall.setPixelSize(option.rect.height()*scaleFactor1);
 194         QFontMetrics fmSmall(fontSmall);
 195
 196         QFont fontBig = option.font;
 197         fontBig.setBold(true);
 198         fontBig.setPixelSize(option.rect.height()*scaleFactor2);
 199         QFontMetrics fmBig(fontBig);
 200
 201         int spacer = (fmSmall.boundingRect("999").width() < SPACER) ? SPACER : fmSmall.boundingRect("999").width();
 202
 203         QLinearGradient titleGradient(option.rect.topLeft(), option.rect.topRight());
 204         bkgrColor = option.palette.color(QPalette::Highlight);
 205         textColor = option.palette.color(QPalette::HighlightedText);
 206         titleGradient.setColorAt(0.0, bkgrColor);
 207         titleGradient.setColorAt(1.0, bkgrColor);
 208
 209         QPainterPath titlePath;
 210         if(isExpanded(index))
 211         {
 212             titlePath.moveTo(option.rect.bottomLeft());
 213             titlePath.lineTo(option.rect.topLeft()+QPoint(0, RADIUS));
 214             titlePath.arcTo(option.rect.left(), option.rect.top(), 2*RADIUS, 2*RADIUS, 180, -90);
 215             titlePath.lineTo(option.rect.topRight()-QPoint(RADIUS, 0));
 216             titlePath.arcTo(option.rect.right()-2*RADIUS, option.rect.top(), 2*RADIUS, 2*RADIUS, 90, -90);
 217             titlePath.lineTo(option.rect.bottomRight());
 218             titlePath.closeSubpath();
 219         }
 220         else
 221         {
 222             titlePath.lineTo(option.rect.topLeft()+QPoint(0, RADIUS));
 223             titlePath.arcTo(option.rect.left(), option.rect.top(), 2*RADIUS, 2*RADIUS, 180, -90);
 224             titlePath.lineTo(option.rect.topRight()-QPoint(RADIUS, 0));
 225             titlePath.arcTo(option.rect.right()-2*RADIUS, option.rect.top(), 2*RADIUS, 2*RADIUS, 90, -90);
 226             titlePath.lineTo(option.rect.bottomRight()-QPoint(0, RADIUS));
 227             titlePath.arcTo(option.rect.right()-2*RADIUS, option.rect.bottom()-2*RADIUS, 2*RADIUS, 2*RADIUS, 0, -90);
 228             titlePath.lineTo(option.rect.bottomLeft()+QPoint(RADIUS, 0));
 229             titlePath.arcTo(option.rect.left(), option.rect.bottom()-2*RADIUS, 2*RADIUS, 2*RADIUS, 270, -90);
 230             titlePath.closeSubpath();
 231         }
 232
 233         painter->setBrush(titleGradient);
 234         painter->setPen(borderPen);
 235         painter->drawPath(titlePath);
 236
 237         // draw icons
 238         borderPen.setColor(textColor);
 239         painter->setPen(borderPen);
 240         painter->setFont(fontSmall);
 241         QImage *image = mControls[FavouriteControlOn]->image();
 242         QPoint drawPoint =
 243             option.rect.topRight()
 244             - QPoint(
 245                     spacer + image->width(),
 246                     - option.rect.height()/2 + image->height()/2);
 247         painter->drawImage(drawPoint,*image);
 248         painter->drawText(drawPoint+QPoint(image->width()+2, image->height() - 2),
 249                 QString::number(numberOfFavourities(index)));
 250 #ifdef MAEMO
 251         drawPoint.setX(drawPoint.x() - spacer - image->width());
 252         painter->drawImage(drawPoint,*mControls[AlarmControlOn]->image());
 253         painter->drawText(drawPoint+QPoint(image->width()+2, image->height() - 2),
 254                 QString::number(numberOfAlarms(index)));
 255 #endif
 256         // draw texts
 257         QString numEvents = QString::number(index.model()->rowCount(index)).append("/");
 258         drawPoint.setX(drawPoint.x() - spacer - fmSmall.boundingRect(numEvents).width());
 259         drawPoint.setY(drawPoint.y()+image->height() - 2);
 260         painter->drawText(drawPoint,numEvents);
 261
 262         QPointF titlePointF = QPoint(
 263                 option.rect.x()+SPACER,
 264                 option.rect.y()+option.rect.height()-fmBig.descent());
 265         painter->setFont(fontBig);
 266
 267         painter->drawText(titlePointF,qVariantValue<QString>(index.data()));
 268     }
 269
 270     //// HIGHLIGHTING SELECTED ITEM
 271     //if (option.state & QStyle::State_Selected)
 272         //painter->fillRect(option.rect, option.palette.highlight());
 273
 274     painter->restore();
 275 }
 276
 277 QSize Delegate::sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const
 278 {
 279     Q_UNUSED(option)
 280
 281     if (index.internalId() == 0) // time group
 282     {
 283         return QSize(40,40);
 284     }
 285     else // event
 286     {
 287         return QSize(100,100);
 288     }
 289 }
 290
 291 bool Delegate::hasParent( const QModelIndex &index ) const
 292 {
 293     if( index.parent().isValid() )
 294         return true;
 295     else
 296         return false;
 297 }
 298
 299 bool Delegate::isLast( const QModelIndex &index ) const
 300 {
 301     if(!hasParent(index))
 302         return false; // what should be returned here?
 303
 304     if(index.row() >= (index.model()->rowCount(index.parent())-1))
 305         return true;
 306     else
 307         return false;
 308 }
 309
 310 bool Delegate::isExpanded( const QModelIndex &index ) const
 311 {
 312     if( !mViewPtr )
 313         return false;
 314     else
 315         return mViewPtr->isExpanded( index );
 316 }
 317
 318 Delegate::ControlId Delegate::whichControlClicked(const QModelIndex &aIndex, const QPoint &aPoint) const
 319 {
 320     if(!hasParent(aIndex)) // time-group item (root item)
 321         return ControlNone;
 322
 323     QListIterator<ControlId> i(mControls.keys());
 324     while (i.hasNext())
 325     {
 326         ControlId id = i.next();
 327         Control *control = mControls[id];
 328         if (control->enabled()
 329             and control->drawRect(static_cast<QTreeView*>(parent())->visualRect(aIndex)).contains(aPoint))
 330         {
 331             return id;
 332         }
 333     }
 334
 335     return ControlNone;
 336 }
 337
 338 Delegate::Control::Control(ControlId aControlId, const QString &aImageName, const Control* prev_control)
 339     : mId(aControlId)
 340     , mImage(new QImage(aImageName))
 341     , mDrawPoint(QPoint(0,0))
 342     , mEnabled(false)
 343 {
 344     QPoint p;
 345     if (prev_control == NULL) {
 346         p = QPoint(0, SPACER);
 347     } else {
 348         p = prev_control->drawPoint();
 349     }
 350     p.setX(p.x()-image()->width()-SPACER);
 351     setDrawPoint(p);
 352 }
 353
 354 void Delegate::Control::paint(QPainter* painter, const QRect rect)
 355 {
 356     painter->drawImage(drawPoint(rect),*image());
 357     setEnabled(true);
 358 }
 359
 360 void Delegate::defineControls()
 361 {
 362     // FAVOURITE ICONs
 363     // on
 364     mControls.insert(FavouriteControlOn, new Control(FavouriteControlOn, QString(":icons/emblem-new.png"), NULL));
 365     // off
 366     mControls.insert(FavouriteControlOff, new Control(FavouriteControlOff, QString(":icons/emblem-new-off.png"), NULL));
 367
 368 #ifdef MAEMO
 369     // ALARM ICONs
 370     // on
 371     mControls.insert(AlarmControlOn,
 372                     new Control(AlarmControlOn, QString(":icons/appointment-soon.png"), mControls[FavouriteControlOn]));
 373     // off
 374     mControls.insert(AlarmControlOff,
 375                     new Control(AlarmControlOff, QString(":icons/appointment-soon-off.png"), mControls[FavouriteControlOff]));
 376 #endif
 377
 378     // WARNING ICON
 379     mControls.insert(WarningControl,
 380                     new Control(WarningControl, QString(":icons/dialog-warning.png"), mControls[FavouriteControlOn]));
 381 }
 382
 383 bool Delegate::isPointFromRect(const QPoint &aPoint, const QRect &aRect) const
 384 {
 385     if( (aPoint.x()>=aRect.left() && aPoint.x()<=aRect.right()) && (aPoint.y()>=aRect.top() && aPoint.y()<=aRect.bottom()) )
 386         return true;
 387
 388     return false;
 389 }
 390
 391 int Delegate::numberOfFavourities(const QModelIndex &index) const
 392 {
 393     if(index.parent().isValid()) // it's event, not time-group
 394         return 0;
 395
 396     int nrofFavs = 0;
 397     for(int i=0; i<index.model()->rowCount(index); i++)
 398         if(static_cast<Event*>(index.child(i,0).internalPointer())->isFavourite())
 399             nrofFavs++;
 400
 401     return nrofFavs;
 402 }
 403
 404 int Delegate::numberOfAlarms(const QModelIndex &index) const
 405 {
 406     if(index.parent().isValid()) // it's event, not time-group
 407         return 0;
 408
 409     int nrofAlarms = 0;
 410     for(int i=0; i<index.model()->rowCount(index); i++)
 411         if(static_cast<Event*>(index.child(i,0).internalPointer())->hasAlarm())
 412             nrofAlarms++;
 413
 414     return nrofAlarms;
 415 }
 416