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