From f8d835cd22de89bc130ff0413228cfea0ebfd8ac Mon Sep 17 00:00:00 2001
From: Jan Dalheimer <jan@dalheimer.de>
Date: Thu, 26 Dec 2013 22:40:26 +0100
Subject: [PATCH] Fix scrolling

---
 CategorizedView.cpp | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/CategorizedView.cpp b/CategorizedView.cpp
index 1860f095..6164cde6 100644
--- a/CategorizedView.cpp
+++ b/CategorizedView.cpp
@@ -9,6 +9,7 @@
 #include <QPersistentModelIndex>
 #include <QDrag>
 #include <QMimeData>
+#include <QScrollBar>
 
 template<typename T>
 bool listsIntersect(const QList<T> &l1, const QList<T> t2)
@@ -182,6 +183,22 @@ void CategorizedView::updateGeometries()
 	qDeleteAll(m_categories);
 	m_categories = cats.values();
 
+	if (m_categories.isEmpty())
+	{
+		verticalScrollBar()->setRange(0, 0);
+	}
+	else
+	{
+		int totalHeight = 0;
+		foreach (const Category *category, m_categories)
+		{
+			totalHeight += category->totalHeight() + m_categoryMargin;
+		}
+		// remove the last margin (we don't want it)
+		totalHeight -= m_categoryMargin;
+		verticalScrollBar()->setRange(0, totalHeight- height());
+	}
+
 	update();
 }
 
@@ -513,6 +530,8 @@ void CategorizedView::mouseDoubleClickEvent(QMouseEvent *event)
 void CategorizedView::paintEvent(QPaintEvent *event)
 {
 	QPainter painter(this->viewport());
+	QPoint offset(horizontalOffset(), verticalOffset());
+	painter.translate(-offset);
 
 	int y = 0;
 	for (int i = 0; i < m_categories.size(); ++i)