clear cache when exit

Author: sulincix

src/tools/mainWindow.cpp

@@ -17,6 +17,7 @@ QWidget *mainWidget;
 
 float scale = 1.0;
 extern void setPen(int mode);
+extern void clearCache();
 extern QColor colors[];
 
 class MainWindow : public QMainWindow {
@@ -70,6 +71,7 @@ class MainWindow : public QMainWindow {
         msgBox.addButton(QMessageBox::No);
         msgBox.setDefaultButton(QMessageBox::No);
         if(msgBox.exec() == QMessageBox::Yes){
+            clearCache();
             enable_erc();
             exit(0);
         }

src/widgets/DrawingWidget.cpp

@@ -124,7 +124,6 @@ class ImageStorage {
         last_image_num = 1;
         removed = 0;
         updateGui();
-        removeDirectory(cache_path);
     }
 
     QImage loadValue(qint64 id) {
@@ -801,3 +800,6 @@ QString generateRandomString(int length) {
     return randomString;
 }
 
+void clearCache(){
+    removeDirectory(QStandardPaths::writableLocation(QStandardPaths::CacheLocation) + "/pardus-pen/");
+}