src/mvc/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         painter->drawImage(mControls[MapControl]->drawPoint(option.rect),*mControls[MapControl]->image());
  89     }
  90     else // doesn't have parent - time-groups' elements (top items)
  91     {
  92         QLinearGradient titleGradient(option.rect.topLeft(), option.rect.topRight());
  93         //titleGradient.setColorAt(0.0, Qt::white);
  94         titleGradient.setColorAt(0.0, bkgrColor);
  95         titleGradient.setColorAt(0.5, Qt::white);
  96         titleGradient.setColorAt(1.0, bkgrColor);
  97
  98         QPainterPath titlePath;
  99         if(isExpanded(index))
 100         {
 101             titlePath.moveTo(option.rect.bottomLeft());
 102             titlePath.lineTo(option.rect.topLeft()+QPoint(0, RADIUS));
 103             titlePath.arcTo(option.rect.left(), option.rect.top(), 2*RADIUS, 2*RADIUS, 180, -90);
 104             titlePath.lineTo(option.rect.topRight()-QPoint(RADIUS, 0));
 105             titlePath.arcTo(option.rect.right()-2*RADIUS, option.rect.top(), 2*RADIUS, 2*RADIUS, 90, -90);
 106             titlePath.lineTo(option.rect.bottomRight());
 107             titlePath.closeSubpath();
 108         }
 109         else
 110         {
 111             titlePath.lineTo(option.rect.topLeft()+QPoint(0, RADIUS));
 112             titlePath.arcTo(option.rect.left(), option.rect.top(), 2*RADIUS, 2*RADIUS, 180, -90);
 113             titlePath.lineTo(option.rect.topRight()-QPoint(RADIUS, 0));
 114             titlePath.arcTo(option.rect.right()-2*RADIUS, option.rect.top(), 2*RADIUS, 2*RADIUS, 90, -90);
 115             titlePath.lineTo(option.rect.bottomRight()-QPoint(0, RADIUS));
 116             titlePath.arcTo(option.rect.right()-2*RADIUS, option.rect.bottom()-2*RADIUS, 2*RADIUS, 2*RADIUS, 0, -90);
 117             titlePath.lineTo(option.rect.bottomLeft()+QPoint(RADIUS, 0));
 118             titlePath.arcTo(option.rect.left(), option.rect.bottom()-2*RADIUS, 2*RADIUS, 2*RADIUS, 270, -90);
 119             titlePath.closeSubpath();
 120         }
 121
 122         painter->setBrush(titleGradient);
 123         painter->setPen(borderPen);
 124         painter->drawPath(titlePath);
 125
 126         QFont font = option.font;
 127         font.setBold(true);
 128         painter->setFont(font);
 129     }
 130
 131     //// HIGHLIGHTING SELECTED ITEM
 132     //if (option.state & QStyle::State_Selected)
 133         //painter->fillRect(option.rect, option.palette.highlight());
 134
 135     // draw title
 136     QPointF titlePointF(option.rect.x(),option.rect.y()+option.rect.height()-10);
 137     QString text = qVariantValue<QString>(index.data());
 138     painter->drawText(titlePointF,text);
 139
 140     painter->restore();
 141 }
 142
 143 QSize Delegate::sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const
 144 {
 145     Q_UNUSED(option)
 146
 147     if (index.internalId() == 0) // time group
 148     {
 149         return QSize(30,30);
 150     }
 151     else // event
 152     {
 153         return QSize(100,100);
 154     }
 155 }
 156
 157 bool Delegate::hasParent( const QModelIndex &index ) const
 158 {
 159     if( index.parent().isValid() )
 160         return true;
 161     else
 162         return false;
 163 }
 164
 165 bool Delegate::isLast( const QModelIndex &index ) const
 166 {
 167     if(!hasParent(index))
 168         return false; // what should be returned here?
 169
 170     if(index.row() >= (index.model()->rowCount(index.parent())-1))
 171         return true;
 172     else
 173         return false;
 174 }
 175
 176 bool Delegate::isExpanded( const QModelIndex &index ) const
 177 {
 178     if( !mViewPtr )
 179         return false;
 180     else
 181         return mViewPtr->isExpanded( index );
 182 }
 183
 184 Delegate::ControlId Delegate::whichControlClicked(const QModelIndex &aIndex, const QPoint &aPoint) const
 185 {
 186     if(!hasParent(aIndex)) // time-group item (root item)
 187         return ControlNone;
 188
 189     QListIterator<ControlId> i(mControls.keys());
 190     while (i.hasNext())
 191     {
 192         ControlId id = i.next();
 193         if(mControls[id]->drawRect(static_cast<QTreeView*>(parent())->visualRect(aIndex)).contains(aPoint))
 194             return id;
 195     }
 196
 197     return ControlNone;
 198 }
 199
 200 void Delegate::defineControls()
 201 {
 202     Control *control;
 203     // FAVOURITE ICON
 204     control = new Control(FavouriteControl,QString(":icons/favourite-on.png"));
 205     control->setDrawPoint(QPoint(-control->image()->width()-SPACER,SPACER));
 206     mControls.insert(FavouriteControl,control);
 207
 208     // ALARM ICON
 209     control = new Control(AlarmControl,QString(":icons/alarm-on.png"));
 210     control->setDrawPoint(QPoint(-mControls[FavouriteControl]->image()->width()-control->image()->width()-2*SPACER,SPACER));
 211     mControls.insert(AlarmControl,control);
 212
 213     // MAP ICON
 214     control = new Control(MapControl,QString(":icons/compass.png"));
 215     control->setDrawPoint(QPoint(-mControls[AlarmControl]->image()->width()-control->image()->width()
 216                                  -mControls[FavouriteControl]->image()->width()-3*SPACER,SPACER));
 217     mControls.insert(MapControl,control);
 218 }
 219
 220 bool Delegate::isPointFromRect(const QPoint &aPoint, const QRect &aRect) const
 221 {
 222     if( (aPoint.x()>=aRect.left() && aPoint.x()<=aRect.right()) && (aPoint.y()>=aRect.top() && aPoint.y()<=aRect.bottom()) )
 223         return true;
 224
 225     return false;
 226 }
 227