A header with the proper copyright/lincence statement was added into each source...
[toast/confclerk.git] / src / mvc / delegate.cpp
1 /*
2  * Copyright (C) 2010 Ixonos Plc.
3  *
4  * This file is part of fosdem-schedule.
5  *
6  * fosdem-schedule is free software: you can redistribute it and/or modify it
7  * under the terms of the GNU General Public License as published by the Free
8  * Software Foundation, either version 2 of the License, or (at your option)
9  * any later version.
10  *
11  * fosdem-schedule is distributed in the hope that it will be useful, but
12  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
13  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
14  * more details.
15  *
16  * You should have received a copy of the GNU General Public License along with
17  * fosdem-schedule.  If not, see <http://www.gnu.org/licenses/>.
18  */
19 #include "delegate.h"
20 #include "eventmodel.h"
21 #include <track.h>
22
23 #include <QDebug>
24 #include <QPainter>
25
26 const int RADIUS = 10;
27 const int SPACER = 10;
28
29 const double scaleFactor1 = 0.4;
30 const double scaleFactor2 = 0.8;
31
32 Delegate::Delegate(QTreeView *aParent)
33     : QItemDelegate(aParent)
34     , mViewPtr(aParent)
35 {
36     mControls.clear();
37     defineControls();
38 }
39
40 Delegate::~Delegate()
41 {
42     QListIterator<ControlId> i(mControls.keys());
43     while (i.hasNext())
44     {
45         delete mControls[i.next()]->image();
46     }
47 }
48
49 void Delegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
50 {
51     if(!mViewPtr)
52         return;
53
54     painter->save();
55     QColor bkgrColor = Qt::cyan;
56     //QColor bkgrColor = QColor(0xAA,0xAA,0xAA);
57     QColor conflictColor = Qt::yellow;
58
59     QPen borderPen(bkgrColor.darker());
60     if(hasParent(index))
61     {
62         int aux = option.rect.height() - mControls[FavouriteControlOn]->drawPoint().y() - mControls[FavouriteControlOn]->image()->height();
63         // font SMALL
64         QFont fontSmall = option.font;
65         fontSmall.setBold(false);
66         fontSmall.setPixelSize(aux*0.2);
67         QFontMetrics fmSmall(fontSmall);
68         // font SMALL bold
69         QFont fontSmallB = fontSmall;
70         fontSmallB.setBold(true);
71         QFontMetrics fmSmallB(fontSmallB);
72
73         // font BIG
74         QFont fontBig = option.font;
75         fontBig.setBold(false);
76         fontBig.setPixelSize(aux*0.33);
77         QFontMetrics fmBig(fontBig);
78         // font BIG bold
79         QFont fontBigB = fontBig;
80         fontBigB.setBold(true);
81         QFontMetrics fmBigB(fontBigB);
82
83         //int spacer = (fmSmall.boundingRect("999").width() < SPACER) ? SPACER : fmSmall.boundingRect("999").width();
84
85         //Time conflicts are colored differently
86         if(static_cast<Event*>(index.internalPointer())->hasTimeConflict())
87             bkgrColor = conflictColor;
88
89         QLinearGradient itemGradient(option.rect.topLeft(), option.rect.bottomLeft());
90         itemGradient.setColorAt(0.0, Qt::white);
91         itemGradient.setColorAt(0.25, bkgrColor);
92         itemGradient.setColorAt(0.5, bkgrColor);
93         itemGradient.setColorAt(0.75, bkgrColor);
94         itemGradient.setColorAt(1.0, Qt::white);
95
96         if(isLast(index))
97         {
98             QPainterPath endPath;
99             endPath.moveTo(option.rect.topLeft());
100             endPath.lineTo(option.rect.bottomLeft()-QPoint(0, RADIUS));
101             endPath.arcTo(option.rect.left(), option.rect.bottom()-2*RADIUS, 2*RADIUS, 2*RADIUS, 180, 90);
102             endPath.lineTo(option.rect.bottomRight()-QPoint(RADIUS, 0));
103             endPath.arcTo(option.rect.right()-2*RADIUS, option.rect.bottom()-2*RADIUS, 2*RADIUS, 2*RADIUS, 270, 90);
104             endPath.lineTo(option.rect.topRight());
105
106             //painter->setBrush( bkgrColor );
107             painter->setBrush(itemGradient);
108             painter->setPen(borderPen);
109             painter->drawPath(endPath);
110
111             painter->setFont(option.font);
112         }
113         else // middle elements
114         {
115             //painter->setBrush( bkgrColor );
116             painter->setBrush(itemGradient);
117             painter->setPen(Qt::NoPen);
118             painter->drawRect(option.rect);
119
120             painter->setPen(borderPen);
121             // vertical lines
122             painter->drawLine(option.rect.topLeft(), option.rect.bottomLeft());
123             painter->drawLine(option.rect.topRight(), option.rect.bottomRight());
124             // horizontal lines
125             painter->drawLine(option.rect.bottomLeft(), option.rect.bottomRight());
126
127             painter->setFont(option.font);
128         }
129
130         // draw Controls
131         // favourite
132         if(static_cast<Event*>(index.internalPointer())->isFavourite())
133             painter->drawImage(mControls[FavouriteControlOn]->drawPoint(option.rect),*mControls[FavouriteControlOn]->image());
134         else
135             painter->drawImage(mControls[FavouriteControlOff]->drawPoint(option.rect),*mControls[FavouriteControlOff]->image());
136 #ifdef MAEMO
137         // alarm
138         if(static_cast<Event*>(index.internalPointer())->hasAlarm())
139             painter->drawImage(mControls[AlarmControlOn]->drawPoint(option.rect),*mControls[AlarmControlOn]->image());
140         else
141             painter->drawImage(mControls[AlarmControlOff]->drawPoint(option.rect),*mControls[AlarmControlOff]->image());
142 #endif
143         // map
144         painter->drawImage(mControls[MapControl]->drawPoint(option.rect),*mControls[MapControl]->image());
145         // Time conflict
146         if(static_cast<Event*>(index.internalPointer())->hasTimeConflict())
147             painter->drawImage(mControls[WarningControl]->drawPoint(option.rect),*mControls[WarningControl]->image());
148
149         // draw texts
150         Event *event = static_cast<Event*>(index.internalPointer());
151         QPointF titlePointF(mControls[FavouriteControlOn]->drawPoint(option.rect));
152         titlePointF.setX(option.rect.x()+SPACER);
153         titlePointF.setY(titlePointF.y()+mControls[FavouriteControlOn]->image()->height());
154         QTime start = event->start().time();
155         painter->setFont(fontBig);
156         painter->drawText(titlePointF,start.toString("hh:mm") + "-" + start.addSecs(event->duration()).toString("hh:mm") + ", " + event->room());
157         // title
158         titlePointF.setY(titlePointF.y()+fmBig.height()-fmBig.descent());
159         painter->setFont(fontBigB);
160         QString title = event->title();
161         if(fmBigB.boundingRect(title).width() > (option.rect.width()-2*SPACER)) // the title won't fit the screen
162         {
163             // chop words from the end
164             while( (fmBigB.boundingRect(title + "...").width() > (option.rect.width()-2*SPACER)) && !title.isEmpty())
165             {
166                 title.chop(1);
167                 // chop characters one-by-one from the end
168                 while( (!title.at(title.length()-1).isSpace()) && !title.isEmpty())
169                 {
170                     title.chop(1);
171                 }
172             }
173             title += "...";
174         }
175         painter->drawText(titlePointF,title);
176         // persons
177         titlePointF.setY(titlePointF.y()+fmSmall.height()-fmSmall.descent());
178         painter->setFont(fontSmall);
179         painter->drawText(titlePointF,"Presenter(s): " + event->persons().join(" and "));
180         // track
181         titlePointF.setY(titlePointF.y()+fmSmall.height()-fmSmall.descent());
182         painter->drawText(titlePointF,"Track: " + Track::retrieveTrackName(event->trackId()));
183     }
184     else // doesn't have parent - time-groups' elements (top items)
185     {
186         QFont fontSmall = option.font;
187         fontSmall.setBold(true);
188         fontSmall.setPixelSize(option.rect.height()*scaleFactor1);
189         QFontMetrics fmSmall(fontSmall);
190
191         QFont fontBig = option.font;
192         fontBig.setBold(true);
193         fontBig.setPixelSize(option.rect.height()*scaleFactor2);
194         QFontMetrics fmBig(fontBig);
195
196         int spacer = (fmSmall.boundingRect("999").width() < SPACER) ? SPACER : fmSmall.boundingRect("999").width();
197
198         QLinearGradient titleGradient(option.rect.topLeft(), option.rect.topRight());
199         //titleGradient.setColorAt(0.0, Qt::white);
200         titleGradient.setColorAt(0.0, bkgrColor);
201         titleGradient.setColorAt(0.5, Qt::white);
202         titleGradient.setColorAt(1.0, bkgrColor);
203
204         QPainterPath titlePath;
205         if(isExpanded(index))
206         {
207             titlePath.moveTo(option.rect.bottomLeft());
208             titlePath.lineTo(option.rect.topLeft()+QPoint(0, RADIUS));
209             titlePath.arcTo(option.rect.left(), option.rect.top(), 2*RADIUS, 2*RADIUS, 180, -90);
210             titlePath.lineTo(option.rect.topRight()-QPoint(RADIUS, 0));
211             titlePath.arcTo(option.rect.right()-2*RADIUS, option.rect.top(), 2*RADIUS, 2*RADIUS, 90, -90);
212             titlePath.lineTo(option.rect.bottomRight());
213             titlePath.closeSubpath();
214         }
215         else
216         {
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()-QPoint(0, RADIUS));
222             titlePath.arcTo(option.rect.right()-2*RADIUS, option.rect.bottom()-2*RADIUS, 2*RADIUS, 2*RADIUS, 0, -90);
223             titlePath.lineTo(option.rect.bottomLeft()+QPoint(RADIUS, 0));
224             titlePath.arcTo(option.rect.left(), option.rect.bottom()-2*RADIUS, 2*RADIUS, 2*RADIUS, 270, -90);      
225             titlePath.closeSubpath();
226         }
227
228         painter->setBrush(titleGradient);
229         painter->setPen(borderPen);
230         painter->drawPath(titlePath);
231
232         // draw icons 
233         painter->setFont(fontSmall);
234         QImage *image = mControls[FavouriteControlOn]->image();
235         QPoint drawPoint =
236             option.rect.topRight()
237             - QPoint(
238                     spacer + image->width(),
239                     - option.rect.height()/2 + image->height()/2);
240         painter->drawImage(drawPoint,*image);
241         painter->drawText(drawPoint+QPoint(image->width()+2, image->height() - 2),
242                 QString::number(numberOfFavourities(index)));
243 #ifdef MAEMO
244         drawPoint.setX(drawPoint.x() - spacer - image->width());
245         painter->drawImage(drawPoint,*mControls[AlarmControlOn]->image());
246         painter->drawText(drawPoint+QPoint(image->width()+2, image->height() - 2),
247                 QString::number(numberOfAlarms(index)));
248 #endif
249         // draw texts
250         QString numEvents = QString::number(index.model()->rowCount(index)).append("/");
251         drawPoint.setX(drawPoint.x() - spacer - fmSmall.boundingRect(numEvents).width());
252         drawPoint.setY(drawPoint.y()+image->height() - 2);
253         painter->drawText(drawPoint,numEvents);
254
255         QPointF titlePointF = QPoint(
256                 option.rect.x()+SPACER,
257                 option.rect.y()+option.rect.height()-fmBig.descent());
258         painter->setFont(fontBig);
259
260         painter->drawText(titlePointF,qVariantValue<QString>(index.data()));
261     }
262
263     //// HIGHLIGHTING SELECTED ITEM
264     //if (option.state & QStyle::State_Selected)
265         //painter->fillRect(option.rect, option.palette.highlight());
266
267     painter->restore();
268 }
269
270 QSize Delegate::sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const
271 {
272     Q_UNUSED(option)
273
274     if (index.internalId() == 0) // time group
275     {
276         return QSize(40,40);
277     }
278     else // event
279     {
280         return QSize(100,100);
281     }
282 }
283
284 bool Delegate::hasParent( const QModelIndex &index ) const
285 {
286     if( index.parent().isValid() )
287         return true;
288     else
289         return false;
290 }
291   
292 bool Delegate::isLast( const QModelIndex &index ) const
293 {
294     if(!hasParent(index))
295         return false; // what should be returned here?
296
297     if(index.row() >= (index.model()->rowCount(index.parent())-1))
298         return true;
299     else
300         return false;
301 }
302
303 bool Delegate::isExpanded( const QModelIndex &index ) const
304 {
305     if( !mViewPtr )
306         return false;
307     else
308         return mViewPtr->isExpanded( index );
309 }
310
311 Delegate::ControlId Delegate::whichControlClicked(const QModelIndex &aIndex, const QPoint &aPoint) const
312 {
313     if(!hasParent(aIndex)) // time-group item (root item)
314         return ControlNone;
315
316     QListIterator<ControlId> i(mControls.keys());
317     while (i.hasNext())
318     {
319         ControlId id = i.next();
320         if(mControls[id]->drawRect(static_cast<QTreeView*>(parent())->visualRect(aIndex)).contains(aPoint))
321         {
322             if(id == WarningControl)
323             {
324                 if(static_cast<Event*>(aIndex.internalPointer())->hasTimeConflict())
325                     return id;
326             }
327             else
328                 return id;
329         }
330     }
331
332     return ControlNone;
333 }
334
335 void Delegate::defineControls()
336 {
337     Control *control;
338     QPoint p(0,0);
339     // FAVOURITE ICONs
340     // on
341     control = new Control(FavouriteControlOn,QString(":icons/favourite-onBig.png"));
342     p = QPoint(0,SPACER);
343     p.setX(p.x()-control->image()->width()-SPACER);
344     control->setDrawPoint(p);
345     mControls.insert(FavouriteControlOn,control);
346     // off
347     control = new Control(FavouriteControlOff,QString(":icons/favourite-offBig.png"));
348     p = QPoint(0,SPACER);
349     p.setX(p.x()-control->image()->width()-SPACER);
350     control->setDrawPoint(p);
351     mControls.insert(FavouriteControlOff,control);
352
353 #ifdef MAEMO
354     // ALARM ICONs
355     // on
356     control = new Control(AlarmControlOn,QString(":icons/alarm-onBig.png"));
357     p = mControls[FavouriteControlOn]->drawPoint();
358     p.setX(p.x()-control->image()->width()-SPACER);
359     control->setDrawPoint(p);
360     mControls.insert(AlarmControlOn,control);
361     // off
362     control = new Control(AlarmControlOff,QString(":icons/alarm-offBig.png"));
363     p = mControls[FavouriteControlOff]->drawPoint();
364     p.setX(p.x()-control->image()->width()-SPACER);
365     control->setDrawPoint(p);
366     mControls.insert(AlarmControlOff,control);
367
368     // MAP ICON
369     control = new Control(MapControl,QString(":icons/compassBig.png"));
370     p = mControls[AlarmControlOn]->drawPoint();
371     p.setX(p.x()-control->image()->width()-SPACER);
372     control->setDrawPoint(p);
373     mControls.insert(MapControl,control);
374 #else
375     // MAP ICON
376     control = new Control(MapControl,QString(":icons/compassBig.png"));
377     p = mControls[FavouriteControlOn]->drawPoint();
378     p.setX(p.x()-control->image()->width()-SPACER);
379     control->setDrawPoint(p);
380     mControls.insert(MapControl,control);
381 #endif
382
383     // WARNING ICON
384     control = new Control(WarningControl,QString(":icons/exclamation.png"));
385     p = mControls[MapControl]->drawPoint();
386     p.setX(p.x()-control->image()->width()-SPACER);
387     control->setDrawPoint(p);
388     mControls.insert(WarningControl,control);
389 }
390
391 bool Delegate::isPointFromRect(const QPoint &aPoint, const QRect &aRect) const
392 {
393     if( (aPoint.x()>=aRect.left() && aPoint.x()<=aRect.right()) && (aPoint.y()>=aRect.top() && aPoint.y()<=aRect.bottom()) )
394         return true;
395
396     return false;
397 }
398
399 int Delegate::numberOfFavourities(const QModelIndex &index) const
400 {
401     if(index.parent().isValid()) // it's event, not time-group
402         return 0;
403
404     int nrofFavs = 0;
405     for(int i=0; i<index.model()->rowCount(index); i++)
406         if(static_cast<Event*>(index.child(i,0).internalPointer())->isFavourite())
407             nrofFavs++;
408
409     return nrofFavs;
410 }
411
412 int Delegate::numberOfAlarms(const QModelIndex &index) const
413 {
414     if(index.parent().isValid()) // it's event, not time-group
415         return 0;
416
417     int nrofAlarms = 0;
418     for(int i=0; i<index.model()->rowCount(index); i++)
419         if(static_cast<Event*>(index.child(i,0).internalPointer())->hasAlarm())
420             nrofAlarms++;
421
422     return nrofAlarms;
423 }
424