diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6a0a7f6..db3ee9f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -29,6 +29,7 @@ set(SRCS
     src/utils.cpp
     src/xwindowinterface.cpp
     src/dockbackground.cpp
+    src/activity.cpp
 
     src/fakewindow.cpp
 )
diff --git a/src/activity.cpp b/src/activity.cpp
new file mode 100644
index 0000000..6420095
--- /dev/null
+++ b/src/activity.cpp
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2021 CutefishOS Team.
+ *
+ * Author:     Reion Wong <reionwong@gmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "activity.h"
+
+#include <NETWM>
+#include <KWindowSystem>
+
+static Activity *SELF = nullptr;
+
+Activity *Activity::self()
+{
+    if (!SELF)
+        SELF = new Activity;
+
+    return SELF;
+}
+
+Activity::Activity(QObject *parent)
+    : QObject(parent)
+{
+    onActiveWindowChanged();
+
+    connect(KWindowSystem::self(), &KWindowSystem::activeWindowChanged, this, &Activity::onActiveWindowChanged);
+    connect(KWindowSystem::self(), static_cast<void (KWindowSystem::*)(WId)>(&KWindowSystem::windowChanged),
+            this, &Activity::onActiveWindowChanged);
+}
+
+bool Activity::launchPad() const
+{
+    return m_launchPad;
+}
+
+void Activity::onActiveWindowChanged()
+{
+    KWindowInfo info(KWindowSystem::activeWindow(),
+                     NET::WMState | NET::WMVisibleName,
+                     NET::WM2WindowClass);
+
+    bool launchPad = info.windowClassClass() == "cutefish-launcher";
+    if (m_launchPad != launchPad) {
+        m_launchPad = launchPad;
+        emit launchPadChanged();
+    }
+
+    m_pid = info.pid();
+    m_windowClass = info.windowClassClass().toLower();
+}
diff --git a/src/activity.h b/src/activity.h
new file mode 100644
index 0000000..0da591d
--- /dev/null
+++ b/src/activity.h
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2021 CutefishOS Team.
+ *
+ * Author:     Reion Wong <reionwong@gmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef ACTIVITY_H
+#define ACTIVITY_H
+
+#include <QObject>
+
+class Activity : public QObject
+{
+    Q_OBJECT
+    Q_PROPERTY(bool launchPad READ launchPad NOTIFY launchPadChanged)
+
+public:
+    static Activity *self();
+    explicit Activity(QObject *parent = nullptr);
+
+    bool launchPad() const;
+
+private slots:
+    void onActiveWindowChanged();
+
+signals:
+    void launchPadChanged();
+
+private:
+    QString m_windowClass;
+    quint32 m_pid;
+
+    bool m_launchPad;
+};
+
+#endif // ACTIVITY_H
diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
index c646e71..d83bc8c 100644
--- a/src/mainwindow.cpp
+++ b/src/mainwindow.cpp
@@ -35,6 +35,7 @@
 
 MainWindow::MainWindow(QQuickView *parent)
     : QQuickView(parent)
+    , m_activity(Activity::self())
     , m_settings(DockSettings::self())
     , m_appModel(new ApplicationModel)
     , m_fakeWindow(nullptr)
@@ -65,13 +66,17 @@ MainWindow::MainWindow(QQuickView *parent)
     onVisibilityChanged();
 
     m_showTimer->setSingleShot(true);
-    m_showTimer->setInterval(300);
+    m_showTimer->setInterval(200);
     connect(m_showTimer, &QTimer::timeout, this, [=] { setVisible(true); });
 
     m_hideTimer->setSingleShot(true);
-    m_hideTimer->setInterval(800);
+    m_hideTimer->setInterval(500);
     connect(m_hideTimer, &QTimer::timeout, this, [=] { setVisible(false); });
 
+    // When the current window changes.
+    connect(m_activity, &Activity::launchPadChanged, this, &MainWindow::onVisibilityChanged);
+
+    // Screen change.
     connect(qApp->primaryScreen(), &QScreen::virtualGeometryChanged, this, &MainWindow::resizeWindow);
     connect(qApp->primaryScreen(), &QScreen::geometryChanged, this, &MainWindow::resizeWindow);
 
@@ -156,7 +161,7 @@ void MainWindow::initSlideWindow()
 
 void MainWindow::updateViewStruts()
 {
-    if (m_settings->visibility() == DockSettings::AlwaysShow) {
+    if (m_settings->visibility() == DockSettings::AlwaysShow || m_activity->launchPad()) {
         XWindowInterface::instance()->setViewStruts(this, m_settings->direction(), geometry());
     } else {
         clearViewStruts();
@@ -249,7 +254,8 @@ void MainWindow::onIconSizeChanged()
 void MainWindow::onVisibilityChanged()
 {
     // Always show
-    if (m_settings->visibility() == DockSettings::AlwaysShow) {
+    // Must remain displayed when launchpad is opened.
+    if (m_settings->visibility() == DockSettings::AlwaysShow || m_activity->launchPad()) {
         m_hideTimer->stop();
 
         setGeometry(windowRect());
@@ -262,6 +268,9 @@ void MainWindow::onVisibilityChanged()
         }
     }
 
+    if (m_activity->launchPad())
+        return;
+
     // Always hide
     if (m_settings->visibility() == DockSettings::AlwaysHide) {
         clearViewStruts();
diff --git a/src/mainwindow.h b/src/mainwindow.h
index ca51145..a35a8f5 100644
--- a/src/mainwindow.h
+++ b/src/mainwindow.h
@@ -23,6 +23,7 @@
 #include <QQuickView>
 #include <QTimer>
 
+#include "activity.h"
 #include "docksettings.h"
 #include "applicationmodel.h"
 #include "fakewindow.h"
@@ -60,6 +61,7 @@ protected:
     bool eventFilter(QObject *obj, QEvent *e) override;
 
 private:
+    Activity *m_activity;
     DockSettings *m_settings;
     ApplicationModel *m_appModel;
     FakeWindow *m_fakeWindow;