LibGUI: Allow setting smooth/coarse scrolling animation on ScrollBar

2 files changed, 17 insertions, 0 deletions

diff --git a/Userland/Libraries/LibGUI/Scrollbar.cpp b/Userland/Libraries/LibGUI/Scrollbar.cpp
index 785f09f711..59366fa099 100644
--- a/Userland/Libraries/LibGUI/Scrollbar.cpp
+++ b/Userland/Libraries/LibGUI/Scrollbar.cpp
@@ -114,6 +114,11 @@ bool Scrollbar::has_scrubber() const
     return max() != min();
 }
 
+void Scrollbar::set_scroll_animation(Animation scroll_animation)
+{
+    m_scroll_animation = scroll_animation;
+}
+
 void Scrollbar::set_value(int value, AllowCallback allow_callback)
 {
     m_target_value = value;
@@ -125,6 +130,9 @@ void Scrollbar::set_value(int value, AllowCallback allow_callback)
 
 void Scrollbar::set_target_value(int new_target_value)
 {
+    if (m_scroll_animation == Animation::CoarseScroll)
+        return set_value(new_target_value);
+
     new_target_value = clamp(new_target_value, min(), max());
 
     // If we are already at or scrolling to the new target then don't touch anything
diff --git a/Userland/Libraries/LibGUI/Scrollbar.h b/Userland/Libraries/LibGUI/Scrollbar.h
index 3ebbf944af..e5b99185e7 100644
--- a/Userland/Libraries/LibGUI/Scrollbar.h
+++ b/Userland/Libraries/LibGUI/Scrollbar.h
@@ -23,6 +23,13 @@ public:
 
     bool has_scrubber() const;
 
+    enum class Animation {
+        SmoothScroll,
+        CoarseScroll
+    };
+
+    void set_scroll_animation(Animation scroll_animation);
+
     virtual void set_value(int, AllowCallback = AllowCallback::Yes) override;
     void set_target_value(int);
 
@@ -79,6 +86,8 @@ private:
 
     void update_animated_scroll();
 
+    Animation m_scroll_animation { Animation::SmoothScroll };
+
     int m_target_value { 0 };
     int m_start_value { 0 };
     double m_animation_time_elapsed { 0 };