From 9d5038c13301d19f9610d319bb009cb1f271c64e 2014-04-08 04:44:18
From: Titta Heikkala <titta.heikkala@digia.com>
Date: 2014-04-08 04:44:18
Subject: [PATCH] Fix bar category rendering for empty category

The category in bar category axis can be an empty string (only one
category can be empty for an axis as duplicates are removed).

Task-number: QTRD-2343
Change-Id: I88e0130c2caac0675573907e52f9089c24197454
Reviewed-by: Miikka Heikkinen <miikka.heikkinen@digia.com>

---

diff --git a/src/axis/barcategoryaxis/qbarcategoryaxis.cpp b/src/axis/barcategoryaxis/qbarcategoryaxis.cpp
index c33e6c6..c222412 100644
--- a/src/axis/barcategoryaxis/qbarcategoryaxis.cpp
+++ b/src/axis/barcategoryaxis/qbarcategoryaxis.cpp
@@ -514,19 +514,22 @@ void  QBarCategoryAxisPrivate::setRange(const QString &minCategory, const QStrin
         emit q->maxChanged(maxCategory);
         emit q->rangeChanged(m_minCategory, m_maxCategory);
         emit rangeChanged(m_min,m_max);
+        return;
     }
 
     if (m_categories.indexOf(maxCategory) < m_categories.indexOf(minCategory))
         return;
 
-    if (!minCategory.isEmpty() && m_minCategory != minCategory && m_categories.contains(minCategory)) {
+    if (!minCategory.isNull() && (m_minCategory != minCategory || m_minCategory.isNull())
+            && m_categories.contains(minCategory)) {
         m_minCategory = minCategory;
         m_min = m_categories.indexOf(m_minCategory) - 0.5;
         changed = true;
         emit q->minChanged(minCategory);
     }
 
-    if (!maxCategory.isEmpty() && m_maxCategory != maxCategory && m_categories.contains(maxCategory)) {
+    if (!maxCategory.isNull() && (m_maxCategory != maxCategory || m_maxCategory.isNull())
+            && m_categories.contains(maxCategory)) {
         m_maxCategory = maxCategory;
         m_max = m_categories.indexOf(m_maxCategory) + 0.5;
         changed = true;