Implement expand and collapse for DB view

Sounds easy, right? It is, if you don't try to create a QIcon from a
QChar. That took me a while...

First, it's not a good idea to fill the QPixmap for the QIcon with
transparency. That gives you a random background. Fill it with palette
color instead.

Then there's QFont's pixelSize(). I have absolutely no idea how it
corresponds to the pixmap's size, but roughly double the width of the
pixmap is a good guess...

1 files changed, 26 insertions, 0 deletions

diff --git a/helper.cpp b/helper.cpp
new file mode 100644
index 0000000..91e4d7f
--- /dev/null
+++ b/helper.cpp
@@ -0,0 +1,26 @@
+#include <QPainter>
+#include <QPalette>
+#include <QAction>
+#include <QApplication>
+
+#include "helper.h"
+
+namespace Helper {
+    QIcon iconFromQChar(const QChar &c, int pixelSize){
+        QPixmap pm(QSize(64,64));
+        QPainter p(&pm);
+        QFont f = p.font();
+        f.setPixelSize(pixelSize);
+        p.setFont(f);
+        p.fillRect(pm.rect(), qApp->palette().color(QPalette::Window));
+        p.setBrush(QBrush(Qt::black));
+        p.drawText(pm.rect(), Qt::AlignCenter, c);
+        return QIcon(pm);
+    }
+
+    QAction* createSeparator(QObject *parent){
+        QAction *a = new QAction(parent);
+        a->setSeparator(true);
+        return a;
+    }
+}