presence: add indicators in smartlist

Presence indicators are now displayed in the smartlist. It is placed
at the bottom left of an avatar and is refreshed automatically when
presence status is modified.

Change-Id: I4acf8a0df0d8a0f03ac013388bf5fc5d417afcb5
Reviewed-by: Olivier Soldano <olivier.soldano@savoirfairelinux.com>

ringthemeutils.h

@@ -28,5 +28,6 @@ static const QColor grey_ {192, 192, 192};
 static const QColor red_ {251, 72, 71};
 static const QColor lightRed_ {252, 91, 90};
 static const QColor darkRed_ {219, 55, 54};
+static const QColor green_ {127, 255, 0};
 
 }

smartlistdelegate.cpp

@@ -98,6 +98,16 @@ SmartListDelegate::paint(QPainter* painter
         painter->drawText(pastilleRect, Qt::AlignCenter, messageCountText);
     }
 
+    // Presence indicator
+    QPainterPath outerCircle, innerCircle;
+    QPointF center(rectAvatar.left() + sizeImage_/6, (rectAvatar.bottom() - sizeImage_/6) + 1);
+    qreal outerCRadius = sizeImage_ / 6, innerCRadius = outerCRadius * 0.75;
+    outerCircle.addEllipse(center, outerCRadius, outerCRadius);
+    innerCircle.addEllipse(center, innerCRadius, innerCRadius);
+    if (index.data(static_cast<int>(Ring::Role::IsPresent)).value<bool>()) {
+        painter->fillPath(outerCircle, Qt::white);
+        painter->fillPath(innerCircle, RingTheme::green_);
+    }
     font.setPointSize(fontSize_);
     QPen pen(painter->pen());