fix drawing on gtk

src/qt/bitcoin.qrc

@@ -1,7 +1,7 @@
 <RCC>
     <qresource prefix="/icons" lang="edit">
-        <file alias="address-book">res/icons/address-book.png</file>
         <file alias="bitcoin">res/icons/bitcoin.png</file>
+        <file alias="address-book">res/icons/address-book.png</file>
         <file alias="quit">res/icons/quit.png</file>
         <file alias="send">res/icons/send.png</file>
         <file alias="toolbar">res/icons/toolbar.png</file>

src/qt/overviewpage.cpp

@@ -10,17 +10,17 @@
 #include "guiconstants.h"
 
 #include <QDebug>
-#include <QItemDelegate>
+#include <QAbstractItemDelegate>
 #include <QPainter>
 
 #define DECORATION_SIZE 64
 #define NUM_ITEMS 3
 
-class TxViewDelegate : public QItemDelegate
+class TxViewDelegate : public QAbstractItemDelegate
 {
     //Q_OBJECT
 public:
-    TxViewDelegate(): QItemDelegate(), unit(BitcoinUnits::BTC)
+    TxViewDelegate(): QAbstractItemDelegate(), unit(BitcoinUnits::BTC)
     {
 
     }
@@ -28,7 +28,6 @@ public:
     inline void paint(QPainter *painter, const QStyleOptionViewItem &option,
                       const QModelIndex &index ) const
     {
-        //QItemDelegate::paint(painter, option, index);
         painter->save();
 
         QIcon icon = qvariant_cast<QIcon>(index.data(Qt::DecorationRole));
@@ -81,6 +80,11 @@ public:
         painter->restore();
     }
 
+    inline QSize sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const
+    {
+        return QSize(DECORATION_SIZE, DECORATION_SIZE);
+    }
+
     int unit;
 
 };