source: confclerk_git/src/mvc/delegate.cpp @ 102d186

Last change on this file since 102d186 was 102d186, checked in by Philipp Spitzer <philipp@…>, 13 months ago

Delete unused variable to avoid a compiler warning.

  • Property mode set to 100644
File size: 13.0 KB
Line 
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
29const int SPACER = 10;
30
31const double scaleFactor1 = 0.4;
32const double scaleFactor2 = 0.8;
33
34Delegate::Delegate(QTreeView *aParent)
35    : QItemDelegate(aParent)
36    , mViewPtr(aParent)
37{
38    mControls.clear();
39    defineControls();
40}
41
42Delegate::~Delegate()
43{
44    QListIterator<ControlId> i(mControls.keys());
45    while (i.hasNext())
46    {
47        delete mControls[i.next()]->image();
48    }
49}
50
51void Delegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
52{
53    if (!mViewPtr)
54        return;
55
56    painter->save();
57
58    QColor textColor = option.palette.color(QPalette::Text);
59
60    if(hasParent(index))
61    {
62        Event *event = static_cast<Event*>(index.internalPointer());
63
64        // determine severity of conflict
65        Favourite eventTimeConflict = event->timeConflict(); // cache value as event->timeConflict is expensive
66        enum ConflictSeverity {csNone, csWeak, csStrong} conflictSeverity = csNone;
67        switch (event->favourite()) {
68            case Favourite_strong:
69                conflictSeverity = (eventTimeConflict == Favourite_strong) ? csStrong : csNone;
70                break;
71            case Favourite_weak:
72                conflictSeverity = (eventTimeConflict == Favourite_no) ? csNone : csWeak;
73                break;
74            case Favourite_no:
75                conflictSeverity = csNone;
76                break;
77        }
78
79        // entry horizontal layout:
80        // * spacer (aka y position of image)
81        // * image
82        // * rest is text, which is 1 line of title with big letters and 2 lines of Presenter and Track
83        int aux = option.rect.height() - SPACER - mControls[FavouriteControlStrong]->image()->height();
84
85        // font SMALL
86        QFont fontSmall = option.font;
87        fontSmall.setBold(false);
88        fontSmall.setPixelSize(aux*0.2);
89        QFontMetrics fmSmall(fontSmall);
90        // font SMALL bold
91        QFont fontSmallB = fontSmall;
92        fontSmallB.setBold(true);
93
94        // font BIG
95        QFont fontBig = option.font;
96        fontBig.setBold(false);
97        fontBig.setPixelSize(aux*0.33);
98        QFontMetrics fmBig(fontBig);
99
100        // font BIG bold
101        QFont fontBigB = fontBig;
102        fontBigB.setBold(true);
103        QFontMetrics fmBigB(fontBigB);
104
105        // background (in case of time conflicts)
106        if (conflictSeverity != csNone) {
107            painter->setBrush(conflictSeverity == csStrong ? Qt::yellow : QColor("lightyellow"));
108            painter->setPen(Qt::NoPen);
109            painter->drawRect(option.rect);
110        }
111
112        // background (without time conflicts)
113        else {
114            QStyleOption styleOption;
115            styleOption.rect = option.rect;
116            qApp->style()->drawPrimitive(QStyle::PE_PanelItemViewItem, &styleOption, painter, mViewPtr);
117        }
118
119        // draw Controls
120        foreach(Control* c, mControls.values()) {
121            c->setEnabled(false);
122        }
123        switch (event->favourite()) {
124        case Favourite_strong:
125            mControls[FavouriteControlStrong]->paint(painter, option.rect);
126            break;
127        case Favourite_weak:
128            mControls[FavouriteControlWeak]->paint(painter, option.rect);
129            break;
130        case Favourite_no:
131            mControls[FavouriteControlNo]->paint(painter, option.rect);
132            break;
133        }
134
135        if(event->hasAlarm())
136            mControls[AlarmControlOn]->paint(painter, option.rect);
137        else
138            mControls[AlarmControlOff]->paint(painter, option.rect);
139
140        if(eventTimeConflict != Favourite_no)
141            mControls[WarningControl]->paint(painter, option.rect);
142
143        // draw texts
144        // it starts just below the image
145        // ("position of text" is lower-left angle of the first letter,
146        //  so the first line is actually at the same height as the image)
147        painter->setPen(QPen(conflictSeverity != csNone ? Qt::black : textColor));
148        QPointF titlePointF(option.rect.x() + SPACER,
149                            option.rect.y() + SPACER + mControls[FavouriteControlStrong]->image()->height());
150        QTime start = event->start().time();
151        painter->setFont(fontBig);
152        painter->drawText(titlePointF,start.toString("hh:mm") + "-" + start.addSecs(event->duration()).toString("hh:mm") + ", " + event->roomName());
153
154        // title
155        titlePointF.setY(titlePointF.y()+fmBig.height()-fmBig.descent());
156        painter->setFont(fontBigB);
157        QString title = event->title();
158        if(fmBigB.boundingRect(title).width() > (option.rect.width()-2*SPACER)) // the title won't fit the screen
159        {
160            // chop words from the end
161            while( (fmBigB.boundingRect(title + "...").width() > (option.rect.width()-2*SPACER)) && !title.isEmpty())
162            {
163                title.chop(1);
164                // chop characters one-by-one from the end
165                while( (!title.at(title.length()-1).isSpace()) && !title.isEmpty())
166                {
167                    title.chop(1);
168                }
169            }
170            title += "...";
171        }
172        painter->drawText(titlePointF,title);
173
174        // persons
175        titlePointF.setY(titlePointF.y()+fmSmall.height()-fmSmall.descent());
176        painter->setFont(fontSmall);
177        QString presenterPrefix = event->persons().count() < 2 ? "Presenter" : "Presenters";
178        painter->drawText(titlePointF,presenterPrefix + ": " + event->persons().join(" and "));
179
180        // track
181        titlePointF.setY(titlePointF.y()+fmSmall.height()-fmSmall.descent());
182        painter->drawText(titlePointF,"Track: " + Track::retrieveTrackName(event->trackId()));
183    }
184
185    else // doesn't have parent - time-groups' elements (top items)
186    {
187        int numFav = numberOfFavourities(index);
188        int numAlarm = numberOfAlarms(index);
189
190        QStyleOptionButton styleOptionButton;
191        styleOptionButton.rect = option.rect;
192        if (isExpanded(index)) styleOptionButton.state = QStyle::State_Sunken;
193        // styleOptionButton.text = qVariantValue<QString>(index.data());
194        qApp->style()->drawPrimitive(QStyle::PE_PanelButtonCommand, &styleOptionButton, painter, mViewPtr);
195        // qApp->style()->drawControl(QStyle::CE_PushButtonLabel, &styleOptionButton, painter, mViewPtr);
196        // qApp->style()->drawPrimitive(QStyle::PE_IndicatorArrowDown, &styleOptionButton, painter, mViewPtr);
197
198        QFont fontSmall = option.font;
199        fontSmall.setBold(true);
200        fontSmall.setPixelSize(option.rect.height()*scaleFactor1);
201        QFontMetrics fmSmall(fontSmall);
202
203        QFont fontBig = option.font;
204        fontBig.setBold(true);
205        fontBig.setPixelSize(option.rect.height()*scaleFactor2);
206        QFontMetrics fmBig(fontBig);
207
208        int spacer = (fmSmall.boundingRect("999").width() < SPACER) ? SPACER : fmSmall.boundingRect("999").width();
209
210        // draw icons
211        painter->setPen(QPen(textColor));
212        painter->setFont(fontSmall);
213        QImage *image = mControls[numFav ? FavouriteControlStrong : FavouriteControlNo]->image();
214        QPoint drawPoint =
215            option.rect.topRight()
216            - QPoint(
217                    spacer + image->width(),
218                    - option.rect.height()/2 + image->height()/2);
219        painter->drawImage(drawPoint,*image);
220        painter->drawText(drawPoint+QPoint(image->width()+2, image->height() - 2),
221                QString::number(numFav));
222
223        drawPoint.setX(drawPoint.x() - spacer - image->width());
224        image = mControls[numAlarm ? AlarmControlOn : AlarmControlOff]->image();
225        painter->drawImage(drawPoint,*image);
226        painter->drawText(drawPoint+QPoint(image->width()+2, image->height() - 2),
227                QString::number(numAlarm));
228
229        // draw texts
230        QString numEvents = QString::number(index.model()->rowCount(index)).append("/");
231        drawPoint.setX(drawPoint.x() - spacer - fmSmall.boundingRect(numEvents).width());
232        drawPoint.setY(drawPoint.y()+image->height() - 2);
233        painter->drawText(drawPoint,numEvents);
234
235        QPointF titlePointF = QPoint(
236                option.rect.x()+SPACER,
237                option.rect.y()+option.rect.height()-fmBig.descent());
238        painter->setFont(fontBig);
239        painter->drawText(titlePointF,index.data().value<QString>());
240    }
241
242    painter->restore();
243}
244
245QSize Delegate::sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const
246{
247    Q_UNUSED(option)
248
249    if (index.internalId() == 0) // time group
250    {
251        return QSize(40,40);
252    }
253    else // event
254    {
255        return QSize(100,100);
256    }
257}
258
259bool Delegate::hasParent( const QModelIndex &index ) const
260{
261    if( index.parent().isValid() )
262        return true;
263    else
264        return false;
265}
266 
267bool Delegate::isLast( const QModelIndex &index ) const
268{
269    if(!hasParent(index))
270        return false; // what should be returned here?
271
272    if(index.row() >= (index.model()->rowCount(index.parent())-1))
273        return true;
274    else
275        return false;
276}
277
278bool Delegate::isExpanded( const QModelIndex &index ) const
279{
280    if( !mViewPtr )
281        return false;
282    else
283        return mViewPtr->isExpanded( index );
284}
285
286Delegate::ControlId Delegate::whichControlClicked(const QModelIndex &aIndex, const QPoint &aPoint) const
287{
288    if(!hasParent(aIndex)) // time-group item (root item)
289        return ControlNone;
290
291    QListIterator<ControlId> i(mControls.keys());
292    while (i.hasNext())
293    {
294        ControlId id = i.next();
295        Control *control = mControls[id];
296        if (control->enabled()
297            and control->drawRect(static_cast<QTreeView*>(parent())->visualRect(aIndex)).contains(aPoint))
298        {
299            return id;
300        }
301    }
302
303    return ControlNone;
304}
305
306Delegate::Control::Control(ControlId aControlId, const QString &aImageName, const Control* prev_control)
307    : mId(aControlId)
308    , mImage(new QImage(aImageName))
309    , mDrawPoint(QPoint(0,0))
310    , mEnabled(false)
311{
312    QPoint p;
313    if (prev_control == NULL) {
314        p = QPoint(0, SPACER);
315    } else {
316        p = prev_control->drawPoint();
317    }
318    p.setX(p.x()-image()->width()-SPACER);
319    setDrawPoint(p);
320}
321
322void Delegate::Control::paint(QPainter* painter, const QRect rect)
323{
324    painter->drawImage(drawPoint(rect),*image());
325    setEnabled(true);
326}
327
328void Delegate::defineControls()
329{
330    // FAVOURITE ICONs
331    // strong
332    mControls.insert(FavouriteControlStrong, new Control(FavouriteControlStrong, QString(":icons/favourite-strong.png"), NULL));
333    // weak
334    mControls.insert(FavouriteControlWeak, new Control(FavouriteControlWeak, QString(":icons/favourite-weak.png"), NULL));
335    // no
336    mControls.insert(FavouriteControlNo, new Control(FavouriteControlNo, QString(":icons/favourite-no.png"), NULL));
337
338    // ALARM ICONs
339    // on
340    mControls.insert(AlarmControlOn,
341                    new Control(AlarmControlOn, QString(":icons/alarm-on.png"), mControls[FavouriteControlStrong]));
342    // off
343    mControls.insert(AlarmControlOff,
344                    new Control(AlarmControlOff, QString(":icons/alarm-off.png"), mControls[FavouriteControlNo]));
345    // WARNING ICON
346    mControls.insert(WarningControl,
347                    new Control(WarningControl, QString(":icons/dialog-warning.png"), mControls[AlarmControlOff]));
348        }
349
350bool Delegate::isPointFromRect(const QPoint &aPoint, const QRect &aRect) const
351{
352    if( (aPoint.x()>=aRect.left() && aPoint.x()<=aRect.right()) && (aPoint.y()>=aRect.top() && aPoint.y()<=aRect.bottom()) )
353        return true;
354
355    return false;
356}
357
358int Delegate::numberOfFavourities(const QModelIndex &index) const
359{
360    if(index.parent().isValid()) // it's event, not time-group
361        return 0;
362
363    int nrofFavs = 0;
364    for(int i=0; i<index.model()->rowCount(index); i++)
365        if(static_cast<Event*>(index.model()->index(i, 0, index).internalPointer())->favourite() != Favourite_no)
366            nrofFavs++;
367
368    return nrofFavs;
369}
370
371int Delegate::numberOfAlarms(const QModelIndex &index) const
372{
373    if(index.parent().isValid()) // it's event, not time-group
374        return 0;
375
376    int nrofAlarms = 0;
377    for(int i=0; i<index.model()->rowCount(index); i++)
378        if(static_cast<Event*>(index.model()->index(i, 0, index).internalPointer())->hasAlarm())
379            nrofAlarms++;
380
381    return nrofAlarms;
382}
383
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