New upstream release.
[debian/confclerk.git] / 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
59     QColor textColor = option.palette.color(QPalette::Text);
60
61     if(hasParent(index))
62     {
63         // entry horizontal layout:
64         // * spacer (aka y position of image)
65         // * image
66         // * rest is text, which is 1 line of title with big letters and 2 lines of Presenter and Track
67         int aux = option.rect.height() - SPACER - mControls[FavouriteControlOn]->image()->height();
68         Event *event = static_cast<Event*>(index.internalPointer());
69
70         // font SMALL
71         QFont fontSmall = option.font;
72         fontSmall.setBold(false);
73         fontSmall.setPixelSize(aux*0.2);
74         QFontMetrics fmSmall(fontSmall);
75         // font SMALL bold
76         QFont fontSmallB = fontSmall;
77         fontSmallB.setBold(true);
78
79         // font BIG
80         QFont fontBig = option.font;
81         fontBig.setBold(false);
82         fontBig.setPixelSize(aux*0.33);
83         QFontMetrics fmBig(fontBig);
84
85         // font BIG bold
86         QFont fontBigB = fontBig;
87         fontBigB.setBold(true);
88         QFontMetrics fmBigB(fontBigB);
89
90         // background (in case of time conflicts)
91         if(event->hasTimeConflict()) {
92             painter->setBrush(Qt::yellow);
93             painter->setPen(Qt::NoPen);
94             painter->drawRect(option.rect);
95         }
96
97         // background (without time conflicts)
98         else {
99             QStyleOption styleOption;
100             styleOption.rect = option.rect;
101             qApp->style()->drawPrimitive(QStyle::PE_PanelItemViewItem, &styleOption, painter, mViewPtr);
102         }
103
104         // draw Controls
105         foreach(Control* c, mControls.values()) {
106             c->setEnabled(false);
107         }
108         if(event->isFavourite())
109             mControls[FavouriteControlOn]->paint(painter, option.rect);
110         else
111             mControls[FavouriteControlOff]->paint(painter, option.rect);
112 #ifdef MAEMO
113         if(event->hasAlarm())
114             mControls[AlarmControlOn]->paint(painter, option.rect);
115         else
116             mControls[AlarmControlOff]->paint(painter, option.rect);
117 #endif
118         if(event->hasTimeConflict())
119             mControls[WarningControl]->paint(painter, option.rect);
120
121         // draw texts
122         // it starts just below the image
123         // ("position of text" is lower-left angle of the first letter,
124         //  so the first line is actually at the same height as the image)
125         painter->setPen(QPen(event->hasTimeConflict() ? Qt::black : textColor));
126         QPointF titlePointF(option.rect.x() + SPACER,
127                             option.rect.y() + SPACER + mControls[FavouriteControlOn]->image()->height());
128         QTime start = event->start().time();
129         painter->setFont(fontBig);
130         painter->drawText(titlePointF,start.toString("hh:mm") + "-" + start.addSecs(event->duration()).toString("hh:mm") + ", " + event->roomName());
131
132         // title
133         titlePointF.setY(titlePointF.y()+fmBig.height()-fmBig.descent());
134         painter->setFont(fontBigB);
135         QString title = event->title();
136         if(fmBigB.boundingRect(title).width() > (option.rect.width()-2*SPACER)) // the title won't fit the screen
137         {
138             // chop words from the end
139             while( (fmBigB.boundingRect(title + "...").width() > (option.rect.width()-2*SPACER)) && !title.isEmpty())
140             {
141                 title.chop(1);
142                 // chop characters one-by-one from the end
143                 while( (!title.at(title.length()-1).isSpace()) && !title.isEmpty())
144                 {
145                     title.chop(1);
146                 }
147             }
148             title += "...";
149         }
150         painter->drawText(titlePointF,title);
151
152         // persons
153         titlePointF.setY(titlePointF.y()+fmSmall.height()-fmSmall.descent());
154         painter->setFont(fontSmall);
155         QString presenterPrefix = event->persons().count() < 2 ? "Presenter" : "Presenters";
156         painter->drawText(titlePointF,presenterPrefix + ": " + event->persons().join(" and "));
157
158         // track
159         titlePointF.setY(titlePointF.y()+fmSmall.height()-fmSmall.descent());
160         painter->drawText(titlePointF,"Track: " + Track::retrieveTrackName(event->trackId()));
161     }
162
163     else // doesn't have parent - time-groups' elements (top items)
164     {
165         int numFav = numberOfFavourities(index);
166
167         QStyleOptionButton styleOptionButton;
168         styleOptionButton.rect = option.rect;
169         if (isExpanded(index)) styleOptionButton.state = QStyle::State_Sunken;
170         // styleOptionButton.text = qVariantValue<QString>(index.data());
171         qApp->style()->drawPrimitive(QStyle::PE_PanelButtonCommand, &styleOptionButton, painter, mViewPtr);
172         // qApp->style()->drawControl(QStyle::CE_PushButtonLabel, &styleOptionButton, painter, mViewPtr);
173         // qApp->style()->drawPrimitive(QStyle::PE_IndicatorArrowDown, &styleOptionButton, painter, mViewPtr);
174
175         QFont fontSmall = option.font;
176         fontSmall.setBold(true);
177         fontSmall.setPixelSize(option.rect.height()*scaleFactor1);
178         QFontMetrics fmSmall(fontSmall);
179
180         QFont fontBig = option.font;
181         fontBig.setBold(true);
182         fontBig.setPixelSize(option.rect.height()*scaleFactor2);
183         QFontMetrics fmBig(fontBig);
184
185         int spacer = (fmSmall.boundingRect("999").width() < SPACER) ? SPACER : fmSmall.boundingRect("999").width();
186
187         // draw icons
188         painter->setPen(QPen(textColor));
189         painter->setFont(fontSmall);
190         QImage *image = mControls[numFav ? FavouriteControlOn : FavouriteControlOff]->image();
191         QPoint drawPoint =
192             option.rect.topRight()
193             - QPoint(
194                     spacer + image->width(),
195                     - option.rect.height()/2 + image->height()/2);
196         painter->drawImage(drawPoint,*image);
197         painter->drawText(drawPoint+QPoint(image->width()+2, image->height() - 2),
198                 QString::number(numFav));
199 #ifdef MAEMO
200         drawPoint.setX(drawPoint.x() - spacer - image->width());
201         painter->drawImage(drawPoint,*mControls[AlarmControlOn]->image());
202         painter->drawText(drawPoint+QPoint(image->width()+2, image->height() - 2),
203                 QString::number(numberOfAlarms(index)));
204 #endif
205         // draw texts
206         QString numEvents = QString::number(index.model()->rowCount(index)).append("/");
207         drawPoint.setX(drawPoint.x() - spacer - fmSmall.boundingRect(numEvents).width());
208         drawPoint.setY(drawPoint.y()+image->height() - 2);
209         painter->drawText(drawPoint,numEvents);
210
211         QPointF titlePointF = QPoint(
212                 option.rect.x()+SPACER,
213                 option.rect.y()+option.rect.height()-fmBig.descent());
214         painter->setFont(fontBig);
215         painter->drawText(titlePointF,qVariantValue<QString>(index.data()));
216     }
217
218     painter->restore();
219 }
220
221 QSize Delegate::sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const
222 {
223     Q_UNUSED(option)
224
225     if (index.internalId() == 0) // time group
226     {
227         return QSize(40,40);
228     }
229     else // event
230     {
231         return QSize(100,100);
232     }
233 }
234
235 bool Delegate::hasParent( const QModelIndex &index ) const
236 {
237     if( index.parent().isValid() )
238         return true;
239     else
240         return false;
241 }
242   
243 bool Delegate::isLast( const QModelIndex &index ) const
244 {
245     if(!hasParent(index))
246         return false; // what should be returned here?
247
248     if(index.row() >= (index.model()->rowCount(index.parent())-1))
249         return true;
250     else
251         return false;
252 }
253
254 bool Delegate::isExpanded( const QModelIndex &index ) const
255 {
256     if( !mViewPtr )
257         return false;
258     else
259         return mViewPtr->isExpanded( index );
260 }
261
262 Delegate::ControlId Delegate::whichControlClicked(const QModelIndex &aIndex, const QPoint &aPoint) const
263 {
264     if(!hasParent(aIndex)) // time-group item (root item)
265         return ControlNone;
266
267     QListIterator<ControlId> i(mControls.keys());
268     while (i.hasNext())
269     {
270         ControlId id = i.next();
271         Control *control = mControls[id];
272         if (control->enabled()
273             and control->drawRect(static_cast<QTreeView*>(parent())->visualRect(aIndex)).contains(aPoint))
274         {
275             return id;
276         }
277     }
278
279     return ControlNone;
280 }
281
282 Delegate::Control::Control(ControlId aControlId, const QString &aImageName, const Control* prev_control)
283     : mId(aControlId)
284     , mImage(new QImage(aImageName))
285     , mDrawPoint(QPoint(0,0))
286     , mEnabled(false)
287 {
288     QPoint p;
289     if (prev_control == NULL) {
290         p = QPoint(0, SPACER);
291     } else {
292         p = prev_control->drawPoint();
293     }
294     p.setX(p.x()-image()->width()-SPACER);
295     setDrawPoint(p);
296 }
297
298 void Delegate::Control::paint(QPainter* painter, const QRect rect)
299 {
300     painter->drawImage(drawPoint(rect),*image());
301     setEnabled(true);
302 }
303
304 void Delegate::defineControls()
305 {
306     // FAVOURITE ICONs
307     // on
308     mControls.insert(FavouriteControlOn, new Control(FavouriteControlOn, QString(":icons/emblem-new.png"), NULL));
309     // off
310     mControls.insert(FavouriteControlOff, new Control(FavouriteControlOff, QString(":icons/emblem-new-off.png"), NULL));
311
312 #ifdef MAEMO
313     // ALARM ICONs
314     // on
315     mControls.insert(AlarmControlOn,
316                     new Control(AlarmControlOn, QString(":icons/appointment-soon.png"), mControls[FavouriteControlOn]));
317     // off
318     mControls.insert(AlarmControlOff,
319                     new Control(AlarmControlOff, QString(":icons/appointment-soon-off.png"), mControls[FavouriteControlOff]));
320     // WARNING ICON
321     mControls.insert(WarningControl,
322                     new Control(WarningControl, QString(":icons/dialog-warning.png"), mControls[AlarmControlOff]));
323 #else
324     // WARNING ICON
325     mControls.insert(WarningControl,
326                     new Control(WarningControl, QString(":icons/dialog-warning.png"), mControls[FavouriteControlOn]));
327 #endif
328
329 }
330
331 bool Delegate::isPointFromRect(const QPoint &aPoint, const QRect &aRect) const
332 {
333     if( (aPoint.x()>=aRect.left() && aPoint.x()<=aRect.right()) && (aPoint.y()>=aRect.top() && aPoint.y()<=aRect.bottom()) )
334         return true;
335
336     return false;
337 }
338
339 int Delegate::numberOfFavourities(const QModelIndex &index) const
340 {
341     if(index.parent().isValid()) // it's event, not time-group
342         return 0;
343
344     int nrofFavs = 0;
345     for(int i=0; i<index.model()->rowCount(index); i++)
346         if(static_cast<Event*>(index.child(i,0).internalPointer())->isFavourite())
347             nrofFavs++;
348
349     return nrofFavs;
350 }
351
352 int Delegate::numberOfAlarms(const QModelIndex &index) const
353 {
354     if(index.parent().isValid()) // it's event, not time-group
355         return 0;
356
357     int nrofAlarms = 0;
358     for(int i=0; i<index.model()->rowCount(index); i++)
359         if(static_cast<Event*>(index.child(i,0).internalPointer())->hasAlarm())
360             nrofAlarms++;
361
362     return nrofAlarms;
363 }
364