fix readme

src/buttonsmodel.cpp

@@ -4,6 +4,7 @@
 #include <QJsonDocument>
 #include <QFileInfo>
 #include <QDir>
+#include <QUrl>
 
 ButtonsModel::ButtonsModel(ConfigManager *config, QObject *parent)
     : QAbstractListModel(parent)
@@ -53,8 +54,8 @@ QVariant ButtonsModel::data(const QModelIndex &index, int role) const
         if (p.startsWith("qrc:/") || p.startsWith(":/") || p.startsWith("file://") || p.startsWith("http"))
             return p;
         if (QFileInfo(p).isAbsolute())
-            return QString("file:///") + p;
-        return QString("file:///") + QDir(m_config->iconsDir()).filePath(p);
+            return QUrl::fromLocalFile(p).toString();
+        return QUrl::fromLocalFile(QDir(m_config->iconsDir()).filePath(p)).toString();
     }
     case ActionTypeRole:    return action.value("type").toString("http_get");
     case ActionUrlRole:     return action.value("url").toString();

src/configmanager.cpp

@@ -193,7 +193,17 @@ QJsonObject ConfigManager::settingsObj() const
 
 QString ConfigManager::iconsDir() const
 {
-    return settingsObj().value("iconsDir").toString();
+    QString d = settingsObj().value("iconsDir").toString();
+    if (d.isEmpty())
+        d = QStringLiteral("./icons");
+    QFileInfo fi(d);
+    if (fi.isAbsolute())
+        return fi.absoluteFilePath();
+    const QString root = qEnvironmentVariable("BUTTONTASK_ROOT");
+    if (!root.isEmpty())
+        return QFileInfo(root + QLatin1Char('/') + d).absoluteFilePath();
+    return QFileInfo(QFileInfo(m_configPath).absolutePath()
+                     + QStringLiteral("/../") + d).absoluteFilePath();
 }
 
 void ConfigManager::setButtons(const QJsonArray &arr)