LibWeb: Expose the MouseEvent::{clientX, clientY} attributes

These provide the cursor coordinate within the viewport at which the
event occurred (as opposed to the page relative coordinates exposed via
offsetX, offsetY).

3 files changed, 12 insertions, 4 deletions

diff --git a/Userland/Libraries/LibWeb/UIEvents/MouseEvent.cpp b/Userland/Libraries/LibWeb/UIEvents/MouseEvent.cpp
index e102a4e138..8b3aab45b4 100644
--- a/Userland/Libraries/LibWeb/UIEvents/MouseEvent.cpp
+++ b/Userland/Libraries/LibWeb/UIEvents/MouseEvent.cpp
@@ -30,10 +30,12 @@
 
 namespace Web::UIEvents {
 
-MouseEvent::MouseEvent(const FlyString& event_name, i32 offset_x, i32 offset_y)
+MouseEvent::MouseEvent(const FlyString& event_name, i32 offset_x, i32 offset_y, i32 client_x, i32 client_y)
     : UIEvent(event_name)
     , m_offset_x(offset_x)
     , m_offset_y(offset_y)
+    , m_client_x(client_x)
+    , m_client_y(client_y)
 {
     set_event_characteristics();
 }
diff --git a/Userland/Libraries/LibWeb/UIEvents/MouseEvent.h b/Userland/Libraries/LibWeb/UIEvents/MouseEvent.h
index 13fc8d3322..4c2d216fc7 100644
--- a/Userland/Libraries/LibWeb/UIEvents/MouseEvent.h
+++ b/Userland/Libraries/LibWeb/UIEvents/MouseEvent.h
@@ -35,24 +35,28 @@ class MouseEvent final : public UIEvents::UIEvent {
 public:
     using WrapperType = Bindings::MouseEventWrapper;
 
-    static NonnullRefPtr<MouseEvent> create(const FlyString& event_name, i32 offset_x, i32 offset_y)
+    static NonnullRefPtr<MouseEvent> create(const FlyString& event_name, i32 offset_x, i32 offset_y, i32 client_x, i32 client_y)
     {
-        return adopt(*new MouseEvent(event_name, offset_x, offset_y));
+        return adopt(*new MouseEvent(event_name, offset_x, offset_y, client_x, client_y));
     }
 
     virtual ~MouseEvent() override;
 
     i32 offset_x() const { return m_offset_x; }
     i32 offset_y() const { return m_offset_y; }
+    i32 client_x() const { return m_client_x; }
+    i32 client_y() const { return m_client_y; }
 
 protected:
-    MouseEvent(const FlyString& event_name, i32 offset_x, i32 offset_y);
+    MouseEvent(const FlyString& event_name, i32 offset_x, i32 offset_y, i32 client_x, i32 client_y);
 
 private:
     void set_event_characteristics();
 
     i32 m_offset_x { 0 };
     i32 m_offset_y { 0 };
+    i32 m_client_x { 0 };
+    i32 m_client_y { 0 };
 };
 
 }
diff --git a/Userland/Libraries/LibWeb/UIEvents/MouseEvent.idl b/Userland/Libraries/LibWeb/UIEvents/MouseEvent.idl
index 2751f2353a..452ef261d4 100644
--- a/Userland/Libraries/LibWeb/UIEvents/MouseEvent.idl
+++ b/Userland/Libraries/LibWeb/UIEvents/MouseEvent.idl
@@ -2,5 +2,7 @@ interface MouseEvent : Event {
 
     readonly attribute double offsetX;
     readonly attribute double offsetY;
+    readonly attribute double clientX;
+    readonly attribute double clientY;
 
 };