WindowServer: Broadcast screen rect changes to all clients.

GUI clients can now obtain the screen rect via GDesktop::rect().

3 files changed, 19 insertions, 0 deletions

diff --git a/LibGUI/GDesktop.cpp b/LibGUI/GDesktop.cpp
index faf8ed6af0..161778ae6f 100644
--- a/LibGUI/GDesktop.cpp
+++ b/LibGUI/GDesktop.cpp
@@ -2,6 +2,7 @@
 #include <LibGUI/GEventLoop.h>
 #include <AK/Eternal.h>
 #include <string.h>
+#include <unistd.h>
 
 GDesktop& GDesktop::the()
 {
@@ -13,6 +14,11 @@ GDesktop::GDesktop()
 {
 }
 
+void GDesktop::did_receive_screen_rect(Badge<GEventLoop>, const Rect& rect)
+{
+    m_rect = rect;
+}
+
 bool GDesktop::set_wallpaper(const String& path)
 {
     WSAPI_ClientMessage message;
diff --git a/LibGUI/GDesktop.h b/LibGUI/GDesktop.h
index 88341cfd7c..4553468815 100644
--- a/LibGUI/GDesktop.h
+++ b/LibGUI/GDesktop.h
@@ -1,8 +1,11 @@
 #pragma once
 
 #include <AK/AKString.h>
+#include <AK/Badge.h>
 #include <SharedGraphics/Rect.h>
 
+class GEventLoop;
+
 class GDesktop {
 public:
     static GDesktop& the();
@@ -11,6 +14,9 @@ public:
     String wallpaper() const;
     bool set_wallpaper(const String& path);
 
+    Rect rect() const { return m_rect; }
+    void did_receive_screen_rect(Badge<GEventLoop>, const Rect&);
+
 private:
     Rect m_rect;
 };
diff --git a/LibGUI/GEventLoop.cpp b/LibGUI/GEventLoop.cpp
index 1756198b2e..16f7996d22 100644
--- a/LibGUI/GEventLoop.cpp
+++ b/LibGUI/GEventLoop.cpp
@@ -6,6 +6,7 @@
 #include <LibGUI/GAction.h>
 #include <LibGUI/GNotifier.h>
 #include <LibGUI/GMenu.h>
+#include <LibGUI/GDesktop.h>
 #include <LibC/unistd.h>
 #include <LibC/stdio.h>
 #include <LibC/fcntl.h>
@@ -339,6 +340,12 @@ void GEventLoop::process_unprocessed_messages()
     for (auto& event : unprocessed_events) {
         if (event.type == WSAPI_ServerMessage::Type::Greeting) {
             s_server_pid = event.greeting.server_pid;
+            GDesktop::the().did_receive_screen_rect(Badge<GEventLoop>(), event.greeting.screen_rect);
+            continue;
+        }
+
+        if (event.type == WSAPI_ServerMessage::Type::ScreenRectChanged) {
+            GDesktop::the().did_receive_screen_rect(Badge<GEventLoop>(), event.screen.rect);
             continue;
         }