Update GPL blurb in source files.
[toast/confclerk.git] / src / mvc / delegate.cpp
1 /*
2  * Copyright (C) 2010 Ixonos Plc.
3  *
4  * This file is part of ConfClerk.
5  *
6  * ConfClerk 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  * ConfClerk 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  * ConfClerk.  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 #include "room.h"
27
28 const int RADIUS = 10;
29 const int SPACER = 10;
30
31 const double scaleFactor1 = 0.4;
32 const double scaleFactor2 = 0.8;
33
34 Delegate::Delegate(QTreeView *aParent)
35     : QItemDelegate(aParent)
36     , mViewPtr(aParent)
37 {
38     mControls.clear();
39     defineControls();
40 }
41
42 Delegate::~Delegate()
43 {
44     QListIterator<ControlId> i(mControls.keys());
45     while (i.hasNext())
46     {
47         delete mControls[i.next()]->image();
48     }
49 }
50
51 void Delegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
52 {
53     if(!mViewPtr)
54         return;
55
56     painter->save();
57     QColor bkgrColor = Qt::cyan;
58     //QColor bkgrColor = QColor(0xAA,0xAA,0xAA);
59     QColor conflictColor = Qt::yellow;
60
61     QPen borderPen(bkgrColor.darker());
62     if(hasParent(index))
63     {
64         // entry horisontal layout:
65         // * spacer (aka y position of image)
66         // * image
67         // * rest is text, which is 1 line of title with big letters and 2 lines of Presenter and Track
68         int aux = option.rect.height() - SPACER - mControls[FavouriteControlOn]->image()->height();
69         Event *event = static_cast<Event*>(index.internalPointer());
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         QFontMetrics fmSmallB(fontSmallB);
79
80         // font BIG
81         QFont fontBig = option.font;
82         fontBig.setBold(false);
83         fontBig.setPixelSize(aux*0.33);
84         QFontMetrics fmBig(fontBig);
85         // font BIG bold
86         QFont fontBigB = fontBig;
87         fontBigB.setBold(true);
88         QFontMetrics fmBigB(fontBigB);
89
90         //int spacer = (fmSmall.boundingRect("999").width() < SPACER) ? SPACER : fmSmall.boundingRect("999").width();
91
92         //Time conflicts are colored differently
93         if(event->hasTimeConflict())
94             bkgrColor = conflictColor;
95
96         QLinearGradient itemGradient(option.rect.topLeft(), option.rect.bottomLeft());
97         itemGradient.setColorAt(0.0, Qt::white);
98         itemGradient.setColorAt(0.25, bkgrColor);
99         itemGradient.setColorAt(0.5, bkgrColor);
100         itemGradient.setColorAt(0.75, bkgrColor);
101         itemGradient.setColorAt(1.0, Qt::white);
102
103         if(isLast(index))
104         {
105             QPainterPath endPath;
106             endPath.moveTo(option.rect.topLeft());
107             endPath.lineTo(option.rect.bottomLeft()-QPoint(0, RADIUS));
108             endPath.arcTo(option.rect.left(), option.rect.bottom()-2*RADIUS, 2*RADIUS, 2*RADIUS, 180, 90);
109             endPath.lineTo(option.rect.bottomRight()-QPoint(RADIUS, 0));
110             endPath.arcTo(option.rect.right()-2*RADIUS, option.rect.bottom()-2*RADIUS, 2*RADIUS, 2*RADIUS, 270, 90);
111             endPath.lineTo(option.rect.topRight());
112
113             //painter->setBrush( bkgrColor );
114             painter->setBrush(itemGradient);
115             painter->setPen(borderPen);
116             painter->drawPath(endPath);
117
118             painter->setFont(option.font);
119         }
120         else // middle elements
121         {
122             //painter->setBrush( bkgrColor );
123             painter->setBrush(itemGradient);
124             painter->setPen(Qt::NoPen);
125             painter->drawRect(option.rect);
126
127             painter->setPen(borderPen);
128             // vertical lines
129             painter->drawLine(option.rect.topLeft(), option.rect.bottomLeft());
130             painter->drawLine(option.rect.topRight(), option.rect.bottomRight());
131             // horizontal lines
132             painter->drawLine(option.rect.bottomLeft(), option.rect.bottomRight());
133
134             painter->setFont(option.font);
135         }
136
137         // draw Controls
138         foreach(Control* c, mControls.values()) {
139             c->setEnabled(false);
140         }
141         if(event->isFavourite())
142             mControls[FavouriteControlOn]->paint(painter, option.rect);
143         else
144             mControls[FavouriteControlOff]->paint(painter, option.rect);
145 #ifdef MAEMO
146         if(event->hasAlarm())
147             mControls[AlarmControlOn]->paint(painter, option.rect);
148         else
149             mControls[AlarmControlOff]->paint(painter, option.rect);
150 #endif
151         if (event->room()->hasMap())
152             mControls[MapControl]->paint(painter, option.rect);
153         if(event->hasTimeConflict())
154             mControls[WarningControl]->paint(painter, option.rect);
155
156         // draw texts
157         // it starts just below the image
158         // ("position of text" is lower-left angle of the first letter,
159         //  so the first line is actually at the same height as the image)
160         QPointF titlePointF(option.rect.x() + SPACER,
161                             option.rect.y() + SPACER + mControls[FavouriteControlOn]->image()->height());
162         QTime start = event->start().time();
163         painter->setFont(fontBig);
164         painter->drawText(titlePointF,start.toString("hh:mm") + "-" + start.addSecs(event->duration()).toString("hh:mm") + ", " + event->roomName());
165         // title
166         titlePointF.setY(titlePointF.y()+fmBig.height()-fmBig.descent());
167         painter->setFont(fontBigB);
168         QString title = event->title();
169         if(fmBigB.boundingRect(title).width() > (option.rect.width()-2*SPACER)) // the title won't fit the screen
170         {
171             // chop words from the end
172             while( (fmBigB.boundingRect(title + "...").width() > (option.rect.width()-2*SPACER)) && !title.isEmpty())
173             {
174                 title.chop(1);
175                 // chop characters one-by-one from the end
176                 while( (!title.at(title.length()-1).isSpace()) && !title.isEmpty())
177                 {
178                     title.chop(1);
179                 }
180             }
181             title += "...";
182         }
183         painter->drawText(titlePointF,title);
184         // persons
185         titlePointF.setY(titlePointF.y()+fmSmall.height()-fmSmall.descent());
186         painter->setFont(fontSmall);
187         painter->drawText(titlePointF,"Presenter(s): " + event->persons().join(" and "));
188         // track
189         titlePointF.setY(titlePointF.y()+fmSmall.height()-fmSmall.descent());
190         painter->drawText(titlePointF,"Track: " + Track::retrieveTrackName(event->trackId()));
191     }
192     else // doesn't have parent - time-groups' elements (top items)
193     {
194         QFont fontSmall = option.font;
195         fontSmall.setBold(true);
196         fontSmall.setPixelSize(option.rect.height()*scaleFactor1);
197         QFontMetrics fmSmall(fontSmall);
198
199         QFont fontBig = option.font;
200         fontBig.setBold(true);
201         fontBig.setPixelSize(option.rect.height()*scaleFactor2);
202         QFontMetrics fmBig(fontBig);
203
204         int spacer = (fmSmall.boundingRect("999").width() < SPACER) ? SPACER : fmSmall.boundingRect("999").width();
205
206         QLinearGradient titleGradient(option.rect.topLeft(), option.rect.topRight());
207         //titleGradient.setColorAt(0.0, Qt::white);
208         titleGradient.setColorAt(0.0, bkgrColor);
209         titleGradient.setColorAt(0.5, Qt::white);
210         titleGradient.setColorAt(1.0, bkgrColor);
211
212         QPainterPath titlePath;
213         if(isExpanded(index))
214         {
215             titlePath.moveTo(option.rect.bottomLeft());
216             titlePath.lineTo(option.rect.topLeft()+QPoint(0, RADIUS));
217             titlePath.arcTo(option.rect.left(), option.rect.top(), 2*RADIUS, 2*RADIUS, 180, -90);
218             titlePath.lineTo(option.rect.topRight()-QPoint(RADIUS, 0));
219             titlePath.arcTo(option.rect.right()-2*RADIUS, option.rect.top(), 2*RADIUS, 2*RADIUS, 90, -90);
220             titlePath.lineTo(option.rect.bottomRight());
221             titlePath.closeSubpath();
222         }
223         else
224         {
225             titlePath.lineTo(option.rect.topLeft()+QPoint(0, RADIUS));
226             titlePath.arcTo(option.rect.left(), option.rect.top(), 2*RADIUS, 2*RADIUS, 180, -90);
227             titlePath.lineTo(option.rect.topRight()-QPoint(RADIUS, 0));
228             titlePath.arcTo(option.rect.right()-2*RADIUS, option.rect.top(), 2*RADIUS, 2*RADIUS, 90, -90);
229             titlePath.lineTo(option.rect.bottomRight()-QPoint(0, RADIUS));
230             titlePath.arcTo(option.rect.right()-2*RADIUS, option.rect.bottom()-2*RADIUS, 2*RADIUS, 2*RADIUS, 0, -90);
231             titlePath.lineTo(option.rect.bottomLeft()+QPoint(RADIUS, 0));
232             titlePath.arcTo(option.rect.left(), option.rect.bottom()-2*RADIUS, 2*RADIUS, 2*RADIUS, 270, -90);      
233             titlePath.closeSubpath();
234         }
235
236         painter->setBrush(titleGradient);
237         painter->setPen(borderPen);
238         painter->drawPath(titlePath);
239
240         // draw icons 
241         painter->setFont(fontSmall);
242         QImage *image = mControls[FavouriteControlOn]->image();
243         QPoint drawPoint =
244             option.rect.topRight()
245             - QPoint(
246                     spacer + image->width(),
247                     - option.rect.height()/2 + image->height()/2);
248         painter->drawImage(drawPoint,*image);
249         painter->drawText(drawPoint+QPoint(image->width()+2, image->height() - 2),
250                 QString::number(numberOfFavourities(index)));
251 #ifdef MAEMO
252         drawPoint.setX(drawPoint.x() - spacer - image->width());
253         painter->drawImage(drawPoint,*mControls[AlarmControlOn]->image());
254         painter->drawText(drawPoint+QPoint(image->width()+2, image->height() - 2),
255                 QString::number(numberOfAlarms(index)));
256 #endif
257         // draw texts
258         QString numEvents = QString::number(index.model()->rowCount(index)).append("/");
259         drawPoint.setX(drawPoint.x() - spacer - fmSmall.boundingRect(numEvents).width());
260         drawPoint.setY(drawPoint.y()+image->height() - 2);
261         painter->drawText(drawPoint,numEvents);
262
263         QPointF titlePointF = QPoint(
264                 option.rect.x()+SPACER,
265                 option.rect.y()+option.rect.height()-fmBig.descent());
266         painter->setFont(fontBig);
267
268         painter->drawText(titlePointF,qVariantValue<QString>(index.data()));
269     }
270
271     //// HIGHLIGHTING SELECTED ITEM
272     //if (option.state & QStyle::State_Selected)
273         //painter->fillRect(option.rect, option.palette.highlight());
274
275     painter->restore();
276 }
277
278 QSize Delegate::sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const
279 {
280     Q_UNUSED(option)
281
282     if (index.internalId() == 0) // time group
283     {
284         return QSize(40,40);
285     }
286     else // event
287     {
288         return QSize(100,100);
289     }
290 }
291
292 bool Delegate::hasParent( const QModelIndex &index ) const
293 {
294     if( index.parent().isValid() )
295         return true;
296     else
297         return false;
298 }
299   
300 bool Delegate::isLast( const QModelIndex &index ) const
301 {
302     if(!hasParent(index))
303         return false; // what should be returned here?
304
305     if(index.row() >= (index.model()->rowCount(index.parent())-1))
306         return true;
307     else
308         return false;
309 }
310
311 bool Delegate::isExpanded( const QModelIndex &index ) const
312 {
313     if( !mViewPtr )
314         return false;
315     else
316         return mViewPtr->isExpanded( index );
317 }
318
319 Delegate::ControlId Delegate::whichControlClicked(const QModelIndex &aIndex, const QPoint &aPoint) const
320 {
321     if(!hasParent(aIndex)) // time-group item (root item)
322         return ControlNone;
323
324     QListIterator<ControlId> i(mControls.keys());
325     while (i.hasNext())
326     {
327         ControlId id = i.next();
328         Control *control = mControls[id];
329         if (control->enabled()
330             and control->drawRect(static_cast<QTreeView*>(parent())->visualRect(aIndex)).contains(aPoint))
331         {
332             return id;
333         }
334     }
335
336     return ControlNone;
337 }
338
339 Delegate::Control::Control(ControlId aControlId, const QString &aImageName, const Control* prev_control)
340     : mId(aControlId)
341     , mImage(new QImage(aImageName))
342     , mDrawPoint(QPoint(0,0))
343     , mEnabled(false)
344 {
345     QPoint p;
346     if (prev_control == NULL) {
347         p = QPoint(0, SPACER);
348     } else {
349         p = prev_control->drawPoint();
350     }
351     p.setX(p.x()-image()->width()-SPACER);
352     setDrawPoint(p);
353 }
354
355 void Delegate::Control::paint(QPainter* painter, const QRect rect)
356 {
357     painter->drawImage(drawPoint(rect),*image());
358     setEnabled(true);
359 }
360
361 void Delegate::defineControls()
362 {
363     // FAVOURITE ICONs
364     // on
365     mControls.insert(FavouriteControlOn, new Control(FavouriteControlOn, QString(":icons/favourite-onBig.png"), NULL));
366     // off
367     mControls.insert(FavouriteControlOff, new Control(FavouriteControlOff, QString(":icons/favourite-offBig.png"), NULL));
368
369 #ifdef MAEMO
370     // ALARM ICONs
371     // on
372     mControls.insert(AlarmControlOn,
373                     new Control(AlarmControlOn, QString(":icons/alarm-onBig.png"), mControls[FavouriteControlOn]));
374     // off
375     mControls.insert(AlarmControlOff,
376                     new Control(AlarmControlOff, QString(":icons/alarm-offBig.png"), mControls[FavouriteControlOff]));
377
378     // MAP ICON
379     mControls.insert(MapControl,
380                     new Control(MapControl, QString(":icons/compassBig.png"), mControls[AlarmControlOn]));
381 #else
382     // MAP ICON
383     mControls.insert(MapControl,
384                     new Control(MapControl, QString(":icons/compassBig.png"), mControls[FavouriteControlOn]));
385 #endif
386
387     // WARNING ICON
388     mControls.insert(WarningControl,
389                     new Control(WarningControl, QString(":icons/exclamation.png"), mControls[MapControl]));
390 }
391
392 bool Delegate::isPointFromRect(const QPoint &aPoint, const QRect &aRect) const
393 {
394     if( (aPoint.x()>=aRect.left() && aPoint.x()<=aRect.right()) && (aPoint.y()>=aRect.top() && aPoint.y()<=aRect.bottom()) )
395         return true;
396
397     return false;
398 }
399
400 int Delegate::numberOfFavourities(const QModelIndex &index) const
401 {
402     if(index.parent().isValid()) // it's event, not time-group
403         return 0;
404
405     int nrofFavs = 0;
406     for(int i=0; i<index.model()->rowCount(index); i++)
407         if(static_cast<Event*>(index.child(i,0).internalPointer())->isFavourite())
408             nrofFavs++;
409
410     return nrofFavs;
411 }
412
413 int Delegate::numberOfAlarms(const QModelIndex &index) const
414 {
415     if(index.parent().isValid()) // it's event, not time-group
416         return 0;
417
418     int nrofAlarms = 0;
419     for(int i=0; i<index.model()->rowCount(index); i++)
420         if(static_cast<Event*>(index.child(i,0).internalPointer())->hasAlarm())
421             nrofAlarms++;
422
423     return nrofAlarms;
424 }
425