src/model/delegate.cpp

   1 #include "delegate.h"
   2 #include "eventmodel.h"
   3
   4 #include <QDebug>
   5 #include <QPainter>
   6
   7 const int RADIUS = 10;
   8 const int SPACER = RADIUS;
   9
  10 Delegate::Delegate(QTreeView *aParent)
  11     : QItemDelegate(aParent)
  12     , mViewPtr(aParent)
  13 {
  14     mControls.clear();
  15     defineControls();
  16 }
  17
  18 Delegate::~Delegate()
  19 {
  20     QListIterator<ControlId> i(mControls.keys());
  21     while (i.hasNext())
  22     {
  23         delete mControls[i.next()]->image();
  24     }
  25 }
  26
  27 void Delegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
  28 {
  29     if(!mViewPtr)
  30         return;
  31
  32     painter->save();
  33
  34     QColor bkgrColor = Qt::cyan;
  35     QPen borderPen(bkgrColor.darker());
  36     if(hasParent(index))
  37     {
  38         if(isLast(index))
  39         {
  40             QLinearGradient lastGradient(option.rect.topLeft(), option.rect.bottomLeft());
  41             lastGradient.setColorAt(0.0, Qt::white);
  42             lastGradient.setColorAt(0.5, bkgrColor);
  43             lastGradient.setColorAt(1.0, Qt::white);
  44
  45             QPainterPath endPath;
  46             endPath.moveTo(option.rect.topLeft());
  47             endPath.lineTo(option.rect.bottomLeft()-QPoint(0, RADIUS));
  48             endPath.arcTo(option.rect.left(), option.rect.bottom()-2*RADIUS, 2*RADIUS, 2*RADIUS, 180, 90);
  49             endPath.lineTo(option.rect.bottomRight()-QPoint(RADIUS, 0));
  50             endPath.arcTo(option.rect.right()-2*RADIUS, option.rect.bottom()-2*RADIUS, 2*RADIUS, 2*RADIUS, 270, 90);
  51             endPath.lineTo(option.rect.topRight());
  52
  53             //painter->setBrush( bkgrColor );
  54             painter->setBrush(lastGradient);
  55             painter->setPen(borderPen);
  56             painter->drawPath(endPath);
  57
  58             painter->setFont(option.font);
  59         }
  60         else // middle elements
  61         {
  62
  63             QLinearGradient middleGradient(option.rect.topLeft(), option.rect.bottomLeft());
  64             middleGradient.setColorAt(0.0, Qt::white);
  65             middleGradient.setColorAt(0.25, bkgrColor);
  66             middleGradient.setColorAt(0.5, Qt::white);
  67             middleGradient.setColorAt(0.75, bkgrColor);
  68             middleGradient.setColorAt(1.0, Qt::white);
  69
  70             //painter->setBrush( bkgrColor );
  71             painter->setBrush(middleGradient);
  72             painter->setPen(Qt::NoPen);
  73             painter->drawRect(option.rect);
  74
  75             painter->setPen(borderPen);
  76             // vertical lines
  77             painter->drawLine(option.rect.topLeft(), option.rect.bottomLeft());
  78             painter->drawLine(option.rect.topRight(), option.rect.bottomRight());
  79             // horizontal lines
  80             painter->drawLine(option.rect.bottomLeft(), option.rect.bottomRight());
  81
  82             painter->setFont(option.font);
  83         }
  84
  85         // draw Controls
  86         painter->drawImage(mControls[FavouriteControl]->drawPoint(option.rect),*mControls[FavouriteControl]->image());
  87         painter->drawImage(mControls[AlarmControl]->drawPoint(option.rect),*mControls[AlarmControl]->image());
  88     }
  89     else // doesn't have parent - time-groups' elements (top items)
  90     {
  91         QLinearGradient titleGradient(option.rect.topLeft(), option.rect.topRight());
  92         //titleGradient.setColorAt(0.0, Qt::white);
  93         titleGradient.setColorAt(0.0, bkgrColor);
  94         titleGradient.setColorAt(0.5, Qt::white);
  95         titleGradient.setColorAt(1.0, bkgrColor);
  96
  97         QPainterPath titlePath;
  98         if(isExpanded(index))
  99         {
 100             titlePath.moveTo(option.rect.bottomLeft());
 101             titlePath.lineTo(option.rect.topLeft()+QPoint(0, RADIUS));
 102             titlePath.arcTo(option.rect.left(), option.rect.top(), 2*RADIUS, 2*RADIUS, 180, -90);
 103             titlePath.lineTo(option.rect.topRight()-QPoint(RADIUS, 0));
 104             titlePath.arcTo(option.rect.right()-2*RADIUS, option.rect.top(), 2*RADIUS, 2*RADIUS, 90, -90);
 105             titlePath.lineTo(option.rect.bottomRight());
 106             titlePath.closeSubpath();
 107         }
 108         else
 109         {
 110             titlePath.lineTo(option.rect.topLeft()+QPoint(0, RADIUS));
 111             titlePath.arcTo(option.rect.left(), option.rect.top(), 2*RADIUS, 2*RADIUS, 180, -90);
 112             titlePath.lineTo(option.rect.topRight()-QPoint(RADIUS, 0));
 113             titlePath.arcTo(option.rect.right()-2*RADIUS, option.rect.top(), 2*RADIUS, 2*RADIUS, 90, -90);
 114             titlePath.lineTo(option.rect.bottomRight()-QPoint(0, RADIUS));
 115             titlePath.arcTo(option.rect.right()-2*RADIUS, option.rect.bottom()-2*RADIUS, 2*RADIUS, 2*RADIUS, 0, -90);
 116             titlePath.lineTo(option.rect.bottomLeft()+QPoint(RADIUS, 0));
 117             titlePath.arcTo(option.rect.left(), option.rect.bottom()-2*RADIUS, 2*RADIUS, 2*RADIUS, 270, -90);
 118             titlePath.closeSubpath();
 119         }
 120
 121         painter->setBrush(titleGradient);
 122         painter->setPen(borderPen);
 123         painter->drawPath(titlePath);
 124
 125         QFont font = option.font;
 126         font.setBold(true);
 127         painter->setFont(font);
 128     }
 129
 130     //// HIGHLIGHTING SELECTED ITEM
 131     //if (option.state & QStyle::State_Selected)
 132         //painter->fillRect(option.rect, option.palette.highlight());
 133
 134     // draw title
 135     QPointF titlePointF(option.rect.x(),option.rect.y()+option.rect.height()-10);
 136     QString text = qVariantValue<QString>(index.data());
 137     painter->drawText(titlePointF,text);
 138
 139     painter->restore();
 140 }
 141
 142 QSize Delegate::sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const
 143 {
 144     Q_UNUSED(option)
 145
 146     if (index.internalId() == 0) // time group
 147     {
 148         return QSize(30,30);
 149     }
 150     else // event
 151     {
 152         return QSize(100,100);
 153     }
 154 }
 155
 156 bool Delegate::hasParent( const QModelIndex &index ) const
 157 {
 158     if( index.parent().isValid() )
 159         return true;
 160     else
 161         return false;
 162 }
 163
 164 bool Delegate::isLast( const QModelIndex &index ) const
 165 {
 166     if(!hasParent(index))
 167         return false; // what should be returned here?
 168
 169     if(index.row() >= (index.model()->rowCount(index.parent())-1))
 170         return true;
 171     else
 172         return false;
 173 }
 174
 175 bool Delegate::isExpanded( const QModelIndex &index ) const
 176 {
 177     if( !mViewPtr )
 178         return false;
 179     else
 180         return mViewPtr->isExpanded( index );
 181 }
 182
 183 Delegate::ControlId Delegate::whichControlClicked(const QModelIndex &aIndex, const QPoint &aPoint) const
 184 {
 185     if(!hasParent(aIndex)) // time-group item (root item)
 186         return ControlNone;
 187
 188     QListIterator<ControlId> i(mControls.keys());
 189     while (i.hasNext())
 190     {
 191         ControlId id = i.next();
 192         if(mControls[id]->drawRect(static_cast<QTreeView*>(parent())->visualRect(aIndex)).contains(aPoint))
 193             return id;
 194     }
 195
 196     return ControlNone;
 197 }
 198
 199 void Delegate::defineControls()
 200 {
 201     Control *control;
 202     // FAVOURITE ICON
 203     control = new Control(FavouriteControl,QString(":icons/favourite-on.png"));
 204     control->setDrawPoint(QPoint(-control->image()->width()-SPACER,SPACER));
 205     mControls.insert(FavouriteControl,control);
 206
 207     // ALARM ICON
 208     control = new Control(AlarmControl,QString(":icons/alarm-on.png"));
 209     control->setDrawPoint(QPoint(-mControls[FavouriteControl]->image()->width()-control->image()->width()-2*SPACER,SPACER));
 210     mControls.insert(AlarmControl,control);
 211 }
 212
 213 bool Delegate::isPointFromRect(const QPoint &aPoint, const QRect &aRect) const
 214 {
 215     if( (aPoint.x()>=aRect.left() && aPoint.x()<=aRect.right()) && (aPoint.y()>=aRect.top() && aPoint.y()<=aRect.bottom()) )
 216         return true;
 217
 218     return false;
 219 }
 220