From c77b2bf9a81ec330df0759821e9bc5a6aef29ed4 Mon Sep 17 00:00:00 2001
From: Marco Martin <notmart@gmail.com>
Date: Fri, 11 Jul 2014 16:42:55 +0200
Subject: [PATCH] fix switch from a less complete to a more complete

if the old theme didn't have a prefix, but the new one has,
set the old (formerly nonexisting) prefix again
---
 src/plasma/framesvg.cpp         | 2 ++
 src/plasma/private/framesvg_p.h | 3 +++
 2 files changed, 5 insertions(+)

diff --git a/src/plasma/framesvg.cpp b/src/plasma/framesvg.cpp
index d733790fb..c01051b5a 100644
--- a/src/plasma/framesvg.cpp
+++ b/src/plasma/framesvg.cpp
@@ -222,6 +222,7 @@ void FrameSvg::setElementPrefix(const QString &prefix)
             d->prefix += '-';
         }
     }
+    d->requestedPrefix = prefix;
 
     FrameData *oldFrameData = d->frames.value(oldPrefix);
     if (oldPrefix == d->prefix && oldFrameData) {
@@ -1119,6 +1120,7 @@ void FrameSvgPrivate::updateSizes() const
 
 void FrameSvgPrivate::updateNeeded()
 {
+    q->setElementPrefix(requestedPrefix);
     q->clearCache();
     updateSizes();
 }
diff --git a/src/plasma/private/framesvg_p.h b/src/plasma/private/framesvg_p.h
index 21ec2234e..b8d24456e 100644
--- a/src/plasma/private/framesvg_p.h
+++ b/src/plasma/private/framesvg_p.h
@@ -149,6 +149,9 @@ public:
 
     Types::Location location;
     QString prefix;
+    //sometimes the prefix we requested is not available, so prefix will be emoty
+    //keep track of the requested one anyways, we'll try again when the theme changes
+    QString requestedPrefix;
 
     FrameSvg *q;