LibGUI+WindowServer: Create and broadcast an event when a window moves

LibWeb's Window object will need to know the OS-level position and size
of the GUI::Window for e.g. screenX, screenY, outerWidth, outerHeight.
It will also need to know about changes to that data.

1 files changed, 15 insertions, 0 deletions

diff --git a/Userland/Libraries/LibGUI/Event.h b/Userland/Libraries/LibGUI/Event.h
index a3366122ef..9d9597df12 100644
--- a/Userland/Libraries/LibGUI/Event.h
+++ b/Userland/Libraries/LibGUI/Event.h
@@ -28,6 +28,7 @@ public:
         Paint,
         MultiPaint,
         Resize,
+        Move,
         MouseMove,
         MouseDown,
         MouseDoubleClick,
@@ -310,6 +311,20 @@ private:
     Gfx::IntSize m_size;
 };
 
+class MoveEvent final : public Event {
+public:
+    explicit MoveEvent(Gfx::IntPoint const& size)
+        : Event(Event::Move)
+        , m_position(size)
+    {
+    }
+
+    Gfx::IntPoint const& position() const { return m_position; }
+
+private:
+    Gfx::IntPoint m_position;
+};
+
 class ContextMenuEvent final : public Event {
 public:
     explicit ContextMenuEvent(Gfx::IntPoint const& position, Gfx::IntPoint const& screen_position)