From d48dcd8bb0c54505b25257b218468b93d2e75c91 Mon Sep 17 00:00:00 2001
From: Alfredo Monclus <alfredomonclus@gmail.com>
Date: Sat, 7 Jun 2025 19:40:50 -0600
Subject: [PATCH] Gui: remove taskheader animation

---
 .../QSint/actionpanel/actionpanelscheme.cpp   |  1 -
 src/Gui/QSint/actionpanel/actionpanelscheme.h |  5 --
 src/Gui/QSint/actionpanel/taskheader_p.cpp    | 66 -------------------
 src/Gui/QSint/actionpanel/taskheader_p.h      | 11 ----
 4 files changed, 83 deletions(-)

diff --git a/src/Gui/QSint/actionpanel/actionpanelscheme.cpp b/src/Gui/QSint/actionpanel/actionpanelscheme.cpp
index 10f9d321e5..70442bfeb7 100644
--- a/src/Gui/QSint/actionpanel/actionpanelscheme.cpp
+++ b/src/Gui/QSint/actionpanel/actionpanelscheme.cpp
@@ -63,7 +63,6 @@ ActionPanelScheme::ActionPanelScheme()
 {
     QFontMetrics fm(QApplication::font());
     headerSize = fm.height() + 10;
-    headerAnimation = true;
 
     QPalette p = QApplication::palette();
 
diff --git a/src/Gui/QSint/actionpanel/actionpanelscheme.h b/src/Gui/QSint/actionpanel/actionpanelscheme.h
index bfd590639c..b3a3cb3e88 100644
--- a/src/Gui/QSint/actionpanel/actionpanelscheme.h
+++ b/src/Gui/QSint/actionpanel/actionpanelscheme.h
@@ -58,11 +58,6 @@ public:
      */
     int headerSize;
 
-    /**
-     * @brief Whether mouseover on the header triggers a slow opacity change.
-     */
-    bool headerAnimation;
-
     /**
      * @brief Image of the folding button when the group is expanded.
      */
diff --git a/src/Gui/QSint/actionpanel/taskheader_p.cpp b/src/Gui/QSint/actionpanel/taskheader_p.cpp
index 524764d35d..977273507e 100644
--- a/src/Gui/QSint/actionpanel/taskheader_p.cpp
+++ b/src/Gui/QSint/actionpanel/taskheader_p.cpp
@@ -25,7 +25,6 @@ TaskHeader::TaskHeader(const QIcon &icon, const QString &title, bool expandable,
   m_over(false),
   m_buttonOver(false),
   m_fold(true),
-  m_opacity(0.1),
   myButton(nullptr)
 {
     setProperty("class", "header");
@@ -120,71 +119,6 @@ void TaskHeader::setScheme(ActionPanelScheme *scheme)
   }
 }
 
-void TaskHeader::paintEvent ( QPaintEvent * event )
-{
-  QPainter p(this);
-
-  if (myScheme->headerAnimation) {
-    p.setOpacity(m_opacity+0.7);
-  }
-
-  BaseClass::paintEvent(event);
-}
-
-void TaskHeader::animate()
-{
-  if (!myScheme->headerAnimation) {
-    return;
-  }
-
-  if (!isEnabled()) {
-    m_opacity = 0.1;
-    update();
-    return;
-  }
-
-  if (m_over) {
-    if (m_opacity >= 0.3) {
-      m_opacity = 0.3;
-      return;
-    }
-    m_opacity += 0.05;
-  } else {
-    if (m_opacity <= 0.1) {
-      m_opacity = 0.1;
-      return;
-    }
-    m_opacity = qMax(0.1, m_opacity-0.05);
-  }
-
-  QTimer::singleShot(100, this, &TaskHeader::animate);
-  update();
-}
-
-#if QT_VERSION < QT_VERSION_CHECK(6,0,0)
-void TaskHeader::enterEvent ( QEvent * /*event*/ )
-#else
-void TaskHeader::enterEvent ( QEnterEvent * /*event*/ )
-#endif
-{
-  m_over = true;
-
-  if (isEnabled()) {
-    QTimer::singleShot(100, this, &TaskHeader::animate);
-  }
-  update();
-}
-
-void TaskHeader::leaveEvent ( QEvent * /*event*/ )
-{
-  m_over = false;
-
-  if (isEnabled()) {
-    QTimer::singleShot(100, this, &TaskHeader::animate);
-  }
-  update();
-}
-
 void TaskHeader::fold()
 {
   if (myExpandable) {
diff --git a/src/Gui/QSint/actionpanel/taskheader_p.h b/src/Gui/QSint/actionpanel/taskheader_p.h
index 84c6168ea6..c77ba37a02 100644
--- a/src/Gui/QSint/actionpanel/taskheader_p.h
+++ b/src/Gui/QSint/actionpanel/taskheader_p.h
@@ -43,17 +43,7 @@ public:
 public Q_SLOTS:
   void fold();
 
-protected Q_SLOTS:
-  void animate();
-
 protected:
-  void paintEvent ( QPaintEvent * event ) override;
-#if QT_VERSION < QT_VERSION_CHECK(6,0,0)
-  void enterEvent ( QEvent * event ) override;
-#else
-  void enterEvent ( QEnterEvent * event ) override;
-#endif
-  void leaveEvent ( QEvent * event ) override;
   void mouseReleaseEvent ( QMouseEvent * event ) override;
   void keyPressEvent ( QKeyEvent * event ) override;
   void keyReleaseEvent ( QKeyEvent * event ) override;
@@ -66,7 +56,6 @@ protected:
 
   bool myExpandable;
   bool m_over, m_buttonOver, m_fold;
-  double m_opacity;
 
   ActionLabel *myTitle;
   QLabel *myButton;