diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1fac056..2221461 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -46,7 +46,6 @@ set (PPIC_CPP_FILES
     app/bottombuttongroup.cpp
     app/navigatorview.cpp
     app/opacityhelper.cpp
-    app/toolbutton.cpp
     app/settings.cpp
     app/settingsdialog.cpp
     app/aboutdialog.cpp
@@ -67,7 +66,6 @@ set (PPIC_HEADER_FILES
     app/bottombuttongroup.h
     app/navigatorview.h
     app/opacityhelper.h
-    app/toolbutton.h
     app/settings.h
     app/settingsdialog.h
     app/aboutdialog.h
diff --git a/app/actionmanager.cpp b/app/actionmanager.cpp
index da1ebba..253f27d 100644
--- a/app/actionmanager.cpp
+++ b/app/actionmanager.cpp
@@ -10,7 +10,7 @@
 #include <QSvgRenderer>
 #include <QPainter>
 
-QIcon ActionManager::loadHidpiIcon(const QString &resp, QSize sz)
+static QIcon loadHidpiIcon(const QString &resp, QSize sz = QSize(32, 32))
 {
     QSvgRenderer r(resp);
     QPixmap pm = QPixmap(sz * qApp->devicePixelRatio());
@@ -34,7 +34,7 @@ void ActionManager::setupAction(MainWindow *mainWindow)
     auto create_action = [] (QWidget *w, QAction **a, QString i, QString an, bool iconFromTheme = false) {
         *a = new QAction(w);
         if (!i.isNull())
-            (*a)->setIcon(iconFromTheme ? QIcon::fromTheme(i) : ActionManager::loadHidpiIcon(i));
+            (*a)->setIcon(iconFromTheme ? QIcon::fromTheme(i) : loadHidpiIcon(i));
         (*a)->setObjectName(an);
         w->addAction(*a);
     };
diff --git a/app/actionmanager.h b/app/actionmanager.h
index 4523173..69c7dd0 100644
--- a/app/actionmanager.h
+++ b/app/actionmanager.h
@@ -21,8 +21,6 @@ public:
     void setupShortcuts();
     void enablePrevNextPictureAction(bool enablePrevPictureAction, bool enableNextPictureAction);
 
-    static QIcon loadHidpiIcon(const QString &resp, QSize sz = QSize(32, 32));
-
 public:
     QAction *actionOpen;
 
diff --git a/app/mainwindow.cpp b/app/mainwindow.cpp
index 3084c85..18351ca 100644
--- a/app/mainwindow.cpp
+++ b/app/mainwindow.cpp
@@ -5,7 +5,6 @@
 #include "mainwindow.h"
 
 #include "settings.h"
-#include "toolbutton.h"
 #include "bottombuttongroup.h"
 #include "graphicsview.h"
 #include "navigatorview.h"
diff --git a/app/mainwindow.h b/app/mainwindow.h
index a610255..bb4aca2 100644
--- a/app/mainwindow.h
+++ b/app/mainwindow.h
@@ -19,7 +19,6 @@ QT_END_NAMESPACE
 
 class ActionManager;
 class PlaylistManager;
-class ToolButton;
 class GraphicsView;
 class NavigatorView;
 class BottomButtonGroup;
diff --git a/app/toolbutton.cpp b/app/toolbutton.cpp
deleted file mode 100644
index db3778b..0000000
--- a/app/toolbutton.cpp
+++ /dev/null
@@ -1,38 +0,0 @@
-// SPDX-FileCopyrightText: 2022 Gary Wang <wzc782970009@gmail.com>
-//
-// SPDX-License-Identifier: MIT
-
-#include "toolbutton.h"
-
-#include "actionmanager.h"
-#include "opacityhelper.h"
-
-#include <QPainter>
-#include <QGraphicsOpacityEffect>
-#include <QPropertyAnimation>
-
-ToolButton::ToolButton(bool hoverColor, QWidget *parent)
-    : QPushButton(parent)
-    , m_opacityHelper(new OpacityHelper(this))
-{
-    setFlat(true);
-    QString qss = "QPushButton {"
-                  "background: transparent;"
-                  "}";
-    if (hoverColor) {
-        qss += "QPushButton:hover {"
-               "background: red;"
-               "}";
-    }
-    setStyleSheet(qss);
-}
-
-void ToolButton::setIconResourcePath(const QString &iconp)
-{
-    this->setIcon(ActionManager::loadHidpiIcon(iconp, this->iconSize()));
-}
-
-void ToolButton::setOpacity(qreal opacity, bool animated)
-{
-    m_opacityHelper->setOpacity(opacity, animated);
-}
diff --git a/app/toolbutton.h b/app/toolbutton.h
deleted file mode 100644
index e53b70f..0000000
--- a/app/toolbutton.h
+++ /dev/null
@@ -1,25 +0,0 @@
-// SPDX-FileCopyrightText: 2022 Gary Wang <wzc782970009@gmail.com>
-//
-// SPDX-License-Identifier: MIT
-
-#ifndef TOOLBUTTON_H
-#define TOOLBUTTON_H
-
-#include <QPushButton>
-
-class OpacityHelper;
-class ToolButton : public QPushButton
-{
-    Q_OBJECT
-public:
-    ToolButton(bool hoverColor = false, QWidget * parent = nullptr);
-    void setIconResourcePath(const QString &iconp);
-
-public slots:
-    void setOpacity(qreal opacity, bool animated = true);
-
-private:
-    OpacityHelper * m_opacityHelper;
-};
-
-#endif // TOOLBUTTON_H