From bbcbe40747b5ade600a89be32c75a0f30e23510f Mon Sep 17 00:00:00 2001
From: reionwong <reionwong@gmail.com>
Date: Fri, 15 Oct 2021 18:57:18 +0800
Subject: [PATCH] Reduce memory usage

---
 model/foldermodel.cpp     | 6 ++++++
 model/foldermodel.h       | 2 ++
 qml/Desktop/Wallpaper.qml | 3 +++
 window.cpp                | 2 ++
 4 files changed, 13 insertions(+)

diff --git a/model/foldermodel.cpp b/model/foldermodel.cpp
index 217c653..d6501b4 100644
--- a/model/foldermodel.cpp
+++ b/model/foldermodel.cpp
@@ -53,6 +53,7 @@
 #include <QProcess>
 #include <QSettings>
 #include <QDesktopServices>
+#include <QPixmapCache>
 
 // Qt Quick
 #include <QQuickItem>
@@ -1199,6 +1200,11 @@ void FolderModel::keyboardSearch(const QString &text)
     }
 }
 
+void FolderModel::clearPixmapCache()
+{
+    QPixmapCache::clear();
+}
+
 void FolderModel::restoreFromTrash()
 {
     if (!m_selectionModel->hasSelection())
diff --git a/model/foldermodel.h b/model/foldermodel.h
index 9750c3e..1fae7d5 100644
--- a/model/foldermodel.h
+++ b/model/foldermodel.h
@@ -209,6 +209,8 @@ public:
     Q_INVOKABLE void updateSelectedItemsSize();
     Q_INVOKABLE void keyboardSearch(const QString &text);
 
+    Q_INVOKABLE void clearPixmapCache();
+
     void restoreFromTrash();
 
     bool isDesktop() const;
diff --git a/qml/Desktop/Wallpaper.qml b/qml/Desktop/Wallpaper.qml
index 07f011b..ad9b21e 100644
--- a/qml/Desktop/Wallpaper.qml
+++ b/qml/Desktop/Wallpaper.qml
@@ -41,6 +41,9 @@ Item {
             clip: true
             cache: false
 
+            // Clear cache
+            onSourceChanged: dirModel.clearPixmapCache()
+
             ColorOverlay {
                 id: dimsWallpaper
                 anchors.fill: parent
diff --git a/window.cpp b/window.cpp
index 13747ec..2d8f6ea 100644
--- a/window.cpp
+++ b/window.cpp
@@ -21,6 +21,7 @@
 #include <QEvent>
 #include <QDebug>
 #include <QQuickWindow>
+#include <QPixmapCache>
 
 Window::Window(QObject *parent)
     : QQmlApplicationEngine(parent)
@@ -40,6 +41,7 @@ void Window::load(const QUrl &url)
 bool Window::eventFilter(QObject *obj, QEvent *e)
 {
     if (e->type() == QEvent::Close) {
+        QPixmapCache::clear();
         clearComponentCache();
         deleteLater();
         e->accept();