src/infoitem.cpp

   1 #include <QFont>
   2 #include <QPainter>
   3 #include "config.h"
   4 #include "infoitem.h"
   5
   6 #define PADDING     10
   7
   8 InfoItem::InfoItem(QGraphicsItem *parent) : QGraphicsItem(parent)
   9 {
  10 #ifndef Q_OS_MAC
  11         setCacheMode(QGraphicsItem::DeviceCoordinateCache);
  12 #endif // Q_OS_MAC
  13 }
  14
  15 void InfoItem::updateBoundingRect()
  16 {
  17         QFont font;
  18         font.setPixelSize(FONT_SIZE);
  19         font.setFamily(FONT_FAMILY);
  20         QFontMetrics fm(font);
  21         QList<KV>::const_iterator i;
  22         qreal width = 0;
  23
  24         for (i = _list.constBegin(); i != _list.constEnd(); i++) {
  25                 width += fm.width(i->key + ": ");
  26                 width += fm.width(i->value) + ((i == _list.end() - 1) ? 0 : PADDING);
  27         }
  28
  29         _boundingRect = QRectF(0, 0, width, _list.isEmpty() ? 0 : fm.height());
  30 }
  31
  32 void InfoItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
  33           QWidget *widget)
  34 {
  35         Q_UNUSED(option);
  36         Q_UNUSED(widget);
  37         QFont font;
  38         font.setPixelSize(FONT_SIZE);
  39         font.setFamily(FONT_FAMILY);
  40         painter->setFont(font);
  41         QFontMetrics fm(font);
  42         QList<KV>::const_iterator i;
  43         int width = 0;
  44
  45
  46         painter->setRenderHint(QPainter::Antialiasing, false);
  47
  48         for (i = _list.constBegin(); i != _list.constEnd(); i++) {
  49                 painter->drawText(width, fm.height() - fm.descent(), i->key + ": ");
  50                 width += fm.width(i->key + ": ");
  51                 painter->drawText(width, fm.height() - fm.descent(), i->value);
  52                 width += fm.width(i->value) + ((i == _list.end() - 1) ? 0 : PADDING);
  53                 if (i != _list.end() - 1) {
  54                         painter->save();
  55                         painter->setPen(Qt::gray);
  56                         painter->drawLine(width - PADDING/2, fm.descent(),
  57                           width - PADDING/2, fm.height() - fm.descent());
  58                         painter->restore();
  59                 }
  60         }
  61
  62 /*
  63         painter->setPen(Qt::red);
  64         painter->drawRect(boundingRect());
  65 */
  66 }
  67
  68 void InfoItem::insert(const QString &key, const QString &value)
  69 {
  70         KV kv(key, value);
  71         int i;
  72
  73         prepareGeometryChange();
  74
  75         if ((i = _list.indexOf(kv)) < 0)
  76                 _list.append(kv);
  77         else
  78                 _list[i] = kv;
  79
  80         updateBoundingRect();
  81         update();
  82 }
  83
  84 void InfoItem::clear()
  85 {
  86         prepareGeometryChange();
  87         _list.clear();
  88         updateBoundingRect();
  89 }