Initialize conflictSeverity variable.
[toast/confclerk.git] / 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 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         Event *event = static_cast<Event*>(index.internalPointer());
64
65         // determine severity of conflict
66         Favourite eventTimeConflict = event->timeConflict(); // cache value as event->timeConflict is expensive
67         enum ConflictSeverity {csNone, csWeak, csStrong} conflictSeverity;
68         conflictSeverity = csNone;
69         switch (event->favourite()) {
70             case Favourite_strong:
71                 conflictSeverity = (eventTimeConflict == Favourite_strong) ? csStrong : csNone;
72                 break;
73             case Favourite_weak:
74                 conflictSeverity = (eventTimeConflict == Favourite_no) ? csNone : csWeak;
75                 break;
76             case Favourite_no:
77                 conflictSeverity = csNone;
78                 break;
79         }
80
81         // entry horizontal layout:
82         // * spacer (aka y position of image)
83         // * image
84         // * rest is text, which is 1 line of title with big letters and 2 lines of Presenter and Track
85         int aux = option.rect.height() - SPACER - mControls[FavouriteControlStrong]->image()->height();
86
87         // font SMALL
88         QFont fontSmall = option.font;
89         fontSmall.setBold(false);
90         fontSmall.setPixelSize(aux*0.2);
91         QFontMetrics fmSmall(fontSmall);
92         // font SMALL bold
93         QFont fontSmallB = fontSmall;
94         fontSmallB.setBold(true);
95
96         // font BIG
97         QFont fontBig = option.font;
98         fontBig.setBold(false);
99         fontBig.setPixelSize(aux*0.33);
100         QFontMetrics fmBig(fontBig);
101
102         // font BIG bold
103         QFont fontBigB = fontBig;
104         fontBigB.setBold(true);
105         QFontMetrics fmBigB(fontBigB);
106
107         // background (in case of time conflicts)
108         if (conflictSeverity != csNone) {
109             painter->setBrush(conflictSeverity == csStrong ? Qt::yellow : QColor("lightyellow"));
110             painter->setPen(Qt::NoPen);
111             painter->drawRect(option.rect);
112         }
113
114         // background (without time conflicts)
115         else {
116             QStyleOption styleOption;
117             styleOption.rect = option.rect;
118             qApp->style()->drawPrimitive(QStyle::PE_PanelItemViewItem, &styleOption, painter, mViewPtr);
119         }
120
121         // draw Controls
122         foreach(Control* c, mControls.values()) {
123             c->setEnabled(false);
124         }
125         switch (event->favourite()) {
126         case Favourite_strong:
127             mControls[FavouriteControlStrong]->paint(painter, option.rect);
128             break;
129         case Favourite_weak:
130             mControls[FavouriteControlWeak]->paint(painter, option.rect);
131             break;
132         case Favourite_no:
133             mControls[FavouriteControlNo]->paint(painter, option.rect);
134             break;
135         }
136
137         if(event->hasAlarm())
138             mControls[AlarmControlOn]->paint(painter, option.rect);
139         else
140             mControls[AlarmControlOff]->paint(painter, option.rect);
141
142         if(eventTimeConflict != Favourite_no)
143             mControls[WarningControl]->paint(painter, option.rect);
144
145         // draw texts
146         // it starts just below the image
147         // ("position of text" is lower-left angle of the first letter,
148         //  so the first line is actually at the same height as the image)
149         painter->setPen(QPen(conflictSeverity != csNone ? Qt::black : textColor));
150         QPointF titlePointF(option.rect.x() + SPACER,
151                             option.rect.y() + SPACER + mControls[FavouriteControlStrong]->image()->height());
152         QTime start = event->start().time();
153         painter->setFont(fontBig);
154         painter->drawText(titlePointF,start.toString("hh:mm") + "-" + start.addSecs(event->duration()).toString("hh:mm") + ", " + event->roomName());
155
156         // title
157         titlePointF.setY(titlePointF.y()+fmBig.height()-fmBig.descent());
158         painter->setFont(fontBigB);
159         QString title = event->title();
160         if(fmBigB.boundingRect(title).width() > (option.rect.width()-2*SPACER)) // the title won't fit the screen
161         {
162             // chop words from the end
163             while( (fmBigB.boundingRect(title + "...").width() > (option.rect.width()-2*SPACER)) && !title.isEmpty())
164             {
165                 title.chop(1);
166                 // chop characters one-by-one from the end
167                 while( (!title.at(title.length()-1).isSpace()) && !title.isEmpty())
168                 {
169                     title.chop(1);
170                 }
171             }
172             title += "...";
173         }
174         painter->drawText(titlePointF,title);
175
176         // persons
177         titlePointF.setY(titlePointF.y()+fmSmall.height()-fmSmall.descent());
178         painter->setFont(fontSmall);
179         QString presenterPrefix = event->persons().count() < 2 ? "Presenter" : "Presenters";
180         painter->drawText(titlePointF,presenterPrefix + ": " + event->persons().join(" and "));
181
182         // track
183         titlePointF.setY(titlePointF.y()+fmSmall.height()-fmSmall.descent());
184         painter->drawText(titlePointF,"Track: " + Track::retrieveTrackName(event->trackId()));
185     }
186
187     else // doesn't have parent - time-groups' elements (top items)
188     {
189         int numFav = numberOfFavourities(index);
190         int numAlarm = numberOfAlarms(index);
191
192         QStyleOptionButton styleOptionButton;
193         styleOptionButton.rect = option.rect;
194         if (isExpanded(index)) styleOptionButton.state = QStyle::State_Sunken;
195         // styleOptionButton.text = qVariantValue<QString>(index.data());
196         qApp->style()->drawPrimitive(QStyle::PE_PanelButtonCommand, &styleOptionButton, painter, mViewPtr);
197         // qApp->style()->drawControl(QStyle::CE_PushButtonLabel, &styleOptionButton, painter, mViewPtr);
198         // qApp->style()->drawPrimitive(QStyle::PE_IndicatorArrowDown, &styleOptionButton, painter, mViewPtr);
199
200         QFont fontSmall = option.font;
201         fontSmall.setBold(true);
202         fontSmall.setPixelSize(option.rect.height()*scaleFactor1);
203         QFontMetrics fmSmall(fontSmall);
204
205         QFont fontBig = option.font;
206         fontBig.setBold(true);
207         fontBig.setPixelSize(option.rect.height()*scaleFactor2);
208         QFontMetrics fmBig(fontBig);
209
210         int spacer = (fmSmall.boundingRect("999").width() < SPACER) ? SPACER : fmSmall.boundingRect("999").width();
211
212         // draw icons
213         painter->setPen(QPen(textColor));
214         painter->setFont(fontSmall);
215         QImage *image = mControls[numFav ? FavouriteControlStrong : FavouriteControlNo]->image();
216         QPoint drawPoint =
217             option.rect.topRight()
218             - QPoint(
219                     spacer + image->width(),
220                     - option.rect.height()/2 + image->height()/2);
221         painter->drawImage(drawPoint,*image);
222         painter->drawText(drawPoint+QPoint(image->width()+2, image->height() - 2),
223                 QString::number(numFav));
224
225         drawPoint.setX(drawPoint.x() - spacer - image->width());
226         image = mControls[numAlarm ? AlarmControlOn : AlarmControlOff]->image();
227         painter->drawImage(drawPoint,*image);
228         painter->drawText(drawPoint+QPoint(image->width()+2, image->height() - 2),
229                 QString::number(numAlarm));
230
231         // draw texts
232         QString numEvents = QString::number(index.model()->rowCount(index)).append("/");
233         drawPoint.setX(drawPoint.x() - spacer - fmSmall.boundingRect(numEvents).width());
234         drawPoint.setY(drawPoint.y()+image->height() - 2);
235         painter->drawText(drawPoint,numEvents);
236
237         QPointF titlePointF = QPoint(
238                 option.rect.x()+SPACER,
239                 option.rect.y()+option.rect.height()-fmBig.descent());
240         painter->setFont(fontBig);
241         painter->drawText(titlePointF,qVariantValue<QString>(index.data()));
242     }
243
244     painter->restore();
245 }
246
247 QSize Delegate::sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const
248 {
249     Q_UNUSED(option)
250
251     if (index.internalId() == 0) // time group
252     {
253         return QSize(40,40);
254     }
255     else // event
256     {
257         return QSize(100,100);
258     }
259 }
260
261 bool Delegate::hasParent( const QModelIndex &index ) const
262 {
263     if( index.parent().isValid() )
264         return true;
265     else
266         return false;
267 }
268   
269 bool Delegate::isLast( const QModelIndex &index ) const
270 {
271     if(!hasParent(index))
272         return false; // what should be returned here?
273
274     if(index.row() >= (index.model()->rowCount(index.parent())-1))
275         return true;
276     else
277         return false;
278 }
279
280 bool Delegate::isExpanded( const QModelIndex &index ) const
281 {
282     if( !mViewPtr )
283         return false;
284     else
285         return mViewPtr->isExpanded( index );
286 }
287
288 Delegate::ControlId Delegate::whichControlClicked(const QModelIndex &aIndex, const QPoint &aPoint) const
289 {
290     if(!hasParent(aIndex)) // time-group item (root item)
291         return ControlNone;
292
293     QListIterator<ControlId> i(mControls.keys());
294     while (i.hasNext())
295     {
296         ControlId id = i.next();
297         Control *control = mControls[id];
298         if (control->enabled()
299             and control->drawRect(static_cast<QTreeView*>(parent())->visualRect(aIndex)).contains(aPoint))
300         {
301             return id;
302         }
303     }
304
305     return ControlNone;
306 }
307
308 Delegate::Control::Control(ControlId aControlId, const QString &aImageName, const Control* prev_control)
309     : mId(aControlId)
310     , mImage(new QImage(aImageName))
311     , mDrawPoint(QPoint(0,0))
312     , mEnabled(false)
313 {
314     QPoint p;
315     if (prev_control == NULL) {
316         p = QPoint(0, SPACER);
317     } else {
318         p = prev_control->drawPoint();
319     }
320     p.setX(p.x()-image()->width()-SPACER);
321     setDrawPoint(p);
322 }
323
324 void Delegate::Control::paint(QPainter* painter, const QRect rect)
325 {
326     painter->drawImage(drawPoint(rect),*image());
327     setEnabled(true);
328 }
329
330 void Delegate::defineControls()
331 {
332     // FAVOURITE ICONs
333     // strong
334     mControls.insert(FavouriteControlStrong, new Control(FavouriteControlStrong, QString(":icons/favourite-strong.png"), NULL));
335     // weak
336     mControls.insert(FavouriteControlWeak, new Control(FavouriteControlWeak, QString(":icons/favourite-weak.png"), NULL));
337     // no
338     mControls.insert(FavouriteControlNo, new Control(FavouriteControlNo, QString(":icons/favourite-no.png"), NULL));
339
340     // ALARM ICONs
341     // on
342     mControls.insert(AlarmControlOn,
343                     new Control(AlarmControlOn, QString(":icons/alarm-on.png"), mControls[FavouriteControlStrong]));
344     // off
345     mControls.insert(AlarmControlOff,
346                     new Control(AlarmControlOff, QString(":icons/alarm-off.png"), mControls[FavouriteControlNo]));
347     // WARNING ICON
348     mControls.insert(WarningControl,
349                     new Control(WarningControl, QString(":icons/dialog-warning.png"), mControls[AlarmControlOff]));
350         }
351
352 bool Delegate::isPointFromRect(const QPoint &aPoint, const QRect &aRect) const
353 {
354     if( (aPoint.x()>=aRect.left() && aPoint.x()<=aRect.right()) && (aPoint.y()>=aRect.top() && aPoint.y()<=aRect.bottom()) )
355         return true;
356
357     return false;
358 }
359
360 int Delegate::numberOfFavourities(const QModelIndex &index) const
361 {
362     if(index.parent().isValid()) // it's event, not time-group
363         return 0;
364
365     int nrofFavs = 0;
366     for(int i=0; i<index.model()->rowCount(index); i++)
367         if(static_cast<Event*>(index.child(i,0).internalPointer())->favourite() != Favourite_no)
368             nrofFavs++;
369
370     return nrofFavs;
371 }
372
373 int Delegate::numberOfAlarms(const QModelIndex &index) const
374 {
375     if(index.parent().isValid()) // it's event, not time-group
376         return 0;
377
378     int nrofAlarms = 0;
379     for(int i=0; i<index.model()->rowCount(index); i++)
380         if(static_cast<Event*>(index.child(i,0).internalPointer())->hasAlarm())
381             nrofAlarms++;
382
383     return nrofAlarms;
384 }
385