make the caching workg again

src/core/notification/icon.cpp

@@ -60,12 +60,9 @@ const QImage &Icon::image() const{
     return d->image();
 }
 
-QString Icon::localUrl()const{
-    if(!QFile(d->m_localUrl).exists())
+QString Icon::localUrl()const
 {
-        image().save(d->m_localUrl ,"PNG");
-    }
-    return d->m_localUrl;
+    return d->localUrl();
 }
 
 const QByteArray &Icon::imageData() const{

src/core/notification/icon_p.cpp

@@ -30,22 +30,19 @@ using namespace Snore;
 IconData::IconData(const QString &url):
     m_url(url),
     m_hash(SnoreCorePrivate::computeHash(m_url.toLatin1())),
-    m_localUrl(QString("%1%2.png").arg(SnoreCorePrivate::snoreTMP(), m_hash)),
     m_isLocalFile(false),
     m_isResource(m_url.startsWith(":/"))
 {
     if(!m_isResource && QFile(url).exists())
     {
         m_isLocalFile = true;
-        m_localUrl = url;
     }
     m_isRemoteFile = !m_isLocalFile && ! m_isResource;
 }
 
 IconData::IconData(const QImage &img):
     m_img(img),
-    m_hash(QString::number(img.cacheKey(), 16)),
-    m_localUrl(QString("%1%2.png").arg(SnoreCorePrivate::snoreTMP(), m_hash)),
+    m_hash(SnoreCorePrivate::computeHash((char*)img.constBits())),
     m_isLocalFile(false),
     m_isResource(false),
     m_isRemoteFile(false)
@@ -96,6 +93,23 @@ const QImage &IconData::image()
     return m_img;
 }
 
+QString IconData::localUrl()
+{
+    if(m_isLocalFile)
+    {
+        return m_url;
+    }
+    else
+    {
+        QString out(QString("%1%2.png").arg(SnoreCorePrivate::snoreTMP(), m_hash));
+        if(!QFile(out).exists())
+        {
+            image().save(out ,"PNG");
+        }
+        return out;
+    }
+}
+
 
 void IconData::download()
 {

src/core/notification/icon_p.h

@@ -41,13 +41,13 @@ public:
 
     const QByteArray &imageData();
     const QImage &image();
+    QString localUrl();
     void download();
 
     QImage m_img;
     QByteArray m_data;
     QString m_url;
     QString m_hash;
-    QString m_localUrl;
     bool m_isLocalFile;
     bool m_isResource;
     bool m_isRemoteFile;