d14daa2518c4824ddec43cc072d3bc0cc6b6dba0
[toast/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     QColor bkgrColor = Qt::cyan;
59     //QColor bkgrColor = QColor(0xAA,0xAA,0xAA);
60     QColor conflictColor = Qt::yellow;
61
62     QPen borderPen(bkgrColor.darker());
63     if(hasParent(index))
64     {
65         // entry horisontal layout:
66         // * spacer (aka y position of image)
67         // * image
68         // * rest is text, which is 1 line of title with big letters and 2 lines of Presenter and Track
69         int aux = option.rect.height() - SPACER - mControls[FavouriteControlOn]->image()->height();
70         Event *event = static_cast<Event*>(index.internalPointer());
71         // font SMALL
72         QFont fontSmall = option.font;
73         fontSmall.setBold(false);
74         fontSmall.setPixelSize(aux*0.2);
75         QFontMetrics fmSmall(fontSmall);
76         // font SMALL bold
77         QFont fontSmallB = fontSmall;
78         fontSmallB.setBold(true);
79         QFontMetrics fmSmallB(fontSmallB);
80
81         // font BIG
82         QFont fontBig = option.font;
83         fontBig.setBold(false);
84         fontBig.setPixelSize(aux*0.33);
85         QFontMetrics fmBig(fontBig);
86         // font BIG bold
87         QFont fontBigB = fontBig;
88         fontBigB.setBold(true);
89         QFontMetrics fmBigB(fontBigB);
90
91         //int spacer = (fmSmall.boundingRect("999").width() < SPACER) ? SPACER : fmSmall.boundingRect("999").width();
92
93         //Time conflicts are colored differently
94         if(event->hasTimeConflict())
95             bkgrColor = conflictColor;
96
97         QLinearGradient itemGradient(option.rect.topLeft(), option.rect.bottomLeft());
98         itemGradient.setColorAt(0.0, Qt::white);
99         itemGradient.setColorAt(0.25, bkgrColor);
100         itemGradient.setColorAt(0.5, bkgrColor);
101         itemGradient.setColorAt(0.75, bkgrColor);
102         itemGradient.setColorAt(1.0, Qt::white);
103
104         if(isLast(index))
105         {
106             QPainterPath endPath;
107             endPath.moveTo(option.rect.topLeft());
108             endPath.lineTo(option.rect.bottomLeft()-QPoint(0, RADIUS));
109             endPath.arcTo(option.rect.left(), option.rect.bottom()-2*RADIUS, 2*RADIUS, 2*RADIUS, 180, 90);
110             endPath.lineTo(option.rect.bottomRight()-QPoint(RADIUS, 0));
111             endPath.arcTo(option.rect.right()-2*RADIUS, option.rect.bottom()-2*RADIUS, 2*RADIUS, 2*RADIUS, 270, 90);
112             endPath.lineTo(option.rect.topRight());
113
114             //painter->setBrush( bkgrColor );
115             painter->setBrush(itemGradient);
116             painter->setPen(borderPen);
117             painter->drawPath(endPath);
118
119             painter->setFont(option.font);
120         }
121         else // middle elements
122         {
123             //painter->setBrush( bkgrColor );
124             painter->setBrush(itemGradient);
125             painter->setPen(Qt::NoPen);
126             painter->drawRect(option.rect);
127
128             painter->setPen(borderPen);
129             // vertical lines
130             painter->drawLine(option.rect.topLeft(), option.rect.bottomLeft());
131             painter->drawLine(option.rect.topRight(), option.rect.bottomRight());
132             // horizontal lines
133             painter->drawLine(option.rect.bottomLeft(), option.rect.bottomRight());
134
135             painter->setFont(option.font);
136         }
137
138         // draw Controls
139         foreach(Control* c, mControls.values()) {
140             c->setEnabled(false);
141         }
142         if(event->isFavourite())
143             mControls[FavouriteControlOn]->paint(painter, option.rect);
144         else
145             mControls[FavouriteControlOff]->paint(painter, option.rect);
146 #ifdef MAEMO
147         if(event->hasAlarm())
148             mControls[AlarmControlOn]->paint(painter, option.rect);
149         else
150             mControls[AlarmControlOff]->paint(painter, option.rect);
151 #endif
152         if (event->room()->hasMap())
153             mControls[MapControl]->paint(painter, option.rect);
154         if(event->hasTimeConflict())
155             mControls[WarningControl]->paint(painter, option.rect);
156
157         // draw texts
158         // it starts just below the image
159         // ("position of text" is lower-left angle of the first letter,
160         //  so the first line is actually at the same height as the image)
161         QPointF titlePointF(option.rect.x() + SPACER,
162                             option.rect.y() + SPACER + mControls[FavouriteControlOn]->image()->height());
163         QTime start = event->start().time();
164         painter->setFont(fontBig);
165         painter->drawText(titlePointF,start.toString("hh:mm") + "-" + start.addSecs(event->duration()).toString("hh:mm") + ", " + event->roomName());
166         // title
167         titlePointF.setY(titlePointF.y()+fmBig.height()-fmBig.descent());
168         painter->setFont(fontBigB);
169         QString title = event->title();
170         if(fmBigB.boundingRect(title).width() > (option.rect.width()-2*SPACER)) // the title won't fit the screen
171         {
172             // chop words from the end
173             while( (fmBigB.boundingRect(title + "...").width() > (option.rect.width()-2*SPACER)) && !title.isEmpty())
174             {
175                 title.chop(1);
176                 // chop characters one-by-one from the end
177                 while( (!title.at(title.length()-1).isSpace()) && !title.isEmpty())
178                 {
179                     title.chop(1);
180                 }
181             }
182             title += "...";
183         }
184         painter->drawText(titlePointF,title);
185         // persons
186         titlePointF.setY(titlePointF.y()+fmSmall.height()-fmSmall.descent());
187         painter->setFont(fontSmall);
188         painter->drawText(titlePointF,"Presenter(s): " + event->persons().join(" and "));
189         // track
190         titlePointF.setY(titlePointF.y()+fmSmall.height()-fmSmall.descent());
191         painter->drawText(titlePointF,"Track: " + Track::retrieveTrackName(event->trackId()));
192     }
193     else // doesn't have parent - time-groups' elements (top items)
194     {
195         QFont fontSmall = option.font;
196         fontSmall.setBold(true);
197         fontSmall.setPixelSize(option.rect.height()*scaleFactor1);
198         QFontMetrics fmSmall(fontSmall);
199
200         QFont fontBig = option.font;
201         fontBig.setBold(true);
202         fontBig.setPixelSize(option.rect.height()*scaleFactor2);
203         QFontMetrics fmBig(fontBig);
204
205         int spacer = (fmSmall.boundingRect("999").width() < SPACER) ? SPACER : fmSmall.boundingRect("999").width();
206
207         QLinearGradient titleGradient(option.rect.topLeft(), option.rect.topRight());
208         //titleGradient.setColorAt(0.0, Qt::white);
209         titleGradient.setColorAt(0.0, bkgrColor);
210         titleGradient.setColorAt(0.5, Qt::white);
211         titleGradient.setColorAt(1.0, bkgrColor);
212
213         QPainterPath titlePath;
214         if(isExpanded(index))
215         {
216             titlePath.moveTo(option.rect.bottomLeft());
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());
222             titlePath.closeSubpath();
223         }
224         else
225         {
226             titlePath.lineTo(option.rect.topLeft()+QPoint(0, RADIUS));
227             titlePath.arcTo(option.rect.left(), option.rect.top(), 2*RADIUS, 2*RADIUS, 180, -90);
228             titlePath.lineTo(option.rect.topRight()-QPoint(RADIUS, 0));
229             titlePath.arcTo(option.rect.right()-2*RADIUS, option.rect.top(), 2*RADIUS, 2*RADIUS, 90, -90);
230             titlePath.lineTo(option.rect.bottomRight()-QPoint(0, RADIUS));
231             titlePath.arcTo(option.rect.right()-2*RADIUS, option.rect.bottom()-2*RADIUS, 2*RADIUS, 2*RADIUS, 0, -90);
232             titlePath.lineTo(option.rect.bottomLeft()+QPoint(RADIUS, 0));
233             titlePath.arcTo(option.rect.left(), option.rect.bottom()-2*RADIUS, 2*RADIUS, 2*RADIUS, 270, -90);      
234             titlePath.closeSubpath();
235         }
236
237         painter->setBrush(titleGradient);
238         painter->setPen(borderPen);
239         painter->drawPath(titlePath);
240
241         // draw icons 
242         painter->setFont(fontSmall);
243         QImage *image = mControls[FavouriteControlOn]->image();
244         QPoint drawPoint =
245             option.rect.topRight()
246             - QPoint(
247                     spacer + image->width(),
248                     - option.rect.height()/2 + image->height()/2);
249         painter->drawImage(drawPoint,*image);
250         painter->drawText(drawPoint+QPoint(image->width()+2, image->height() - 2),
251                 QString::number(numberOfFavourities(index)));
252 #ifdef MAEMO
253         drawPoint.setX(drawPoint.x() - spacer - image->width());
254         painter->drawImage(drawPoint,*mControls[AlarmControlOn]->image());
255         painter->drawText(drawPoint+QPoint(image->width()+2, image->height() - 2),
256                 QString::number(numberOfAlarms(index)));
257 #endif
258         // draw texts
259         QString numEvents = QString::number(index.model()->rowCount(index)).append("/");
260         drawPoint.setX(drawPoint.x() - spacer - fmSmall.boundingRect(numEvents).width());
261         drawPoint.setY(drawPoint.y()+image->height() - 2);
262         painter->drawText(drawPoint,numEvents);
263
264         QPointF titlePointF = QPoint(
265                 option.rect.x()+SPACER,
266                 option.rect.y()+option.rect.height()-fmBig.descent());
267         painter->setFont(fontBig);
268
269         painter->drawText(titlePointF,qVariantValue<QString>(index.data()));
270     }
271
272     //// HIGHLIGHTING SELECTED ITEM
273     //if (option.state & QStyle::State_Selected)
274         //painter->fillRect(option.rect, option.palette.highlight());
275
276     painter->restore();
277 }
278
279 QSize Delegate::sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const
280 {
281     Q_UNUSED(option)
282
283     if (index.internalId() == 0) // time group
284     {
285         return QSize(40,40);
286     }
287     else // event
288     {
289         return QSize(100,100);
290     }
291 }
292
293 bool Delegate::hasParent( const QModelIndex &index ) const
294 {
295     if( index.parent().isValid() )
296         return true;
297     else
298         return false;
299 }
300   
301 bool Delegate::isLast( const QModelIndex &index ) const
302 {
303     if(!hasParent(index))
304         return false; // what should be returned here?
305
306     if(index.row() >= (index.model()->rowCount(index.parent())-1))
307         return true;
308     else
309         return false;
310 }
311
312 bool Delegate::isExpanded( const QModelIndex &index ) const
313 {
314     if( !mViewPtr )
315         return false;
316     else
317         return mViewPtr->isExpanded( index );
318 }
319
320 Delegate::ControlId Delegate::whichControlClicked(const QModelIndex &aIndex, const QPoint &aPoint) const
321 {
322     if(!hasParent(aIndex)) // time-group item (root item)
323         return ControlNone;
324
325     QListIterator<ControlId> i(mControls.keys());
326     while (i.hasNext())
327     {
328         ControlId id = i.next();
329         Control *control = mControls[id];
330         if (control->enabled()
331             and control->drawRect(static_cast<QTreeView*>(parent())->visualRect(aIndex)).contains(aPoint))
332         {
333             return id;
334         }
335     }
336
337     return ControlNone;
338 }
339
340 Delegate::Control::Control(ControlId aControlId, const QString &aImageName, const Control* prev_control)
341     : mId(aControlId)
342     , mImage(new QImage(aImageName))
343     , mDrawPoint(QPoint(0,0))
344     , mEnabled(false)
345 {
346     QPoint p;
347     if (prev_control == NULL) {
348         p = QPoint(0, SPACER);
349     } else {
350         p = prev_control->drawPoint();
351     }
352     p.setX(p.x()-image()->width()-SPACER);
353     setDrawPoint(p);
354 }
355
356 void Delegate::Control::paint(QPainter* painter, const QRect rect)
357 {
358     painter->drawImage(drawPoint(rect),*image());
359     setEnabled(true);
360 }
361
362 void Delegate::defineControls()
363 {
364     // FAVOURITE ICONs
365     // on
366     mControls.insert(FavouriteControlOn, new Control(FavouriteControlOn, QString(":icons/emblem-new.png"), NULL));
367     // off
368     mControls.insert(FavouriteControlOff, new Control(FavouriteControlOff, QString(":icons/emblem-new-off.png"), NULL));
369
370 #ifdef MAEMO
371     // ALARM ICONs
372     // on
373     mControls.insert(AlarmControlOn,
374                     new Control(AlarmControlOn, QString(":icons/appointment-soon.png"), mControls[FavouriteControlOn]));
375     // off
376     mControls.insert(AlarmControlOff,
377                     new Control(AlarmControlOff, QString(":icons/appointment-soon-off.png"), mControls[FavouriteControlOff]));
378
379     // MAP ICON
380     mControls.insert(MapControl,
381                     new Control(MapControl, QString(":icons/applications-internet.png"), mControls[AlarmControlOn]));
382 #else
383     // MAP ICON
384     mControls.insert(MapControl,
385                     new Control(MapControl, QString(":icons/applications-internet.png"), mControls[FavouriteControlOn]));
386 #endif
387
388     // WARNING ICON
389     mControls.insert(WarningControl,
390                     new Control(WarningControl, QString(":icons/dialog-warning.png"), mControls[MapControl]));
391 }
392
393 bool Delegate::isPointFromRect(const QPoint &aPoint, const QRect &aRect) const
394 {
395     if( (aPoint.x()>=aRect.left() && aPoint.x()<=aRect.right()) && (aPoint.y()>=aRect.top() && aPoint.y()<=aRect.bottom()) )
396         return true;
397
398     return false;
399 }
400
401 int Delegate::numberOfFavourities(const QModelIndex &index) const
402 {
403     if(index.parent().isValid()) // it's event, not time-group
404         return 0;
405
406     int nrofFavs = 0;
407     for(int i=0; i<index.model()->rowCount(index); i++)
408         if(static_cast<Event*>(index.child(i,0).internalPointer())->isFavourite())
409             nrofFavs++;
410
411     return nrofFavs;
412 }
413
414 int Delegate::numberOfAlarms(const QModelIndex &index) const
415 {
416     if(index.parent().isValid()) // it's event, not time-group
417         return 0;
418
419     int nrofAlarms = 0;
420     for(int i=0; i<index.model()->rowCount(index); i++)
421         if(static_cast<Event*>(index.child(i,0).internalPointer())->hasAlarm())
422             nrofAlarms++;
423
424     return nrofAlarms;
425 }
426