WindowServer+LibGUI: Allow changing a window's base size and increment

Previously it was only possible to change these window attributes when
creating a new window. This patch adds an IPC message that allows you
to change them at runtime.

Libraries/LibGUI/Window.cpp

@@ -670,4 +670,22 @@ Action* Window::action_for_key_event(const KeyEvent& event)
     return found_action;
 }
 
+void Window::set_base_size(const Gfx::Size& base_size)
+{
+    if (m_base_size == base_size)
+        return;
+    m_base_size = base_size;
+    if (m_window_id)
+        WindowServerConnection::the().send_sync<Messages::WindowServer::SetWindowBaseSizeAndSizeIncrement>(m_window_id, m_base_size, m_size_increment);
+}
+
+void Window::set_size_increment(const Gfx::Size& size_increment)
+{
+    if (m_size_increment == size_increment)
+        return;
+    m_size_increment = size_increment;
+    if (m_window_id)
+        WindowServerConnection::the().send_sync<Messages::WindowServer::SetWindowBaseSizeAndSizeIncrement>(m_window_id, m_base_size, m_size_increment);
+}
+
 }

Libraries/LibGUI/Window.h

@@ -148,9 +148,9 @@ public:
     Gfx::Bitmap* back_bitmap() { return m_back_bitmap.ptr(); }
 
     Gfx::Size size_increment() const { return m_size_increment; }
-    void set_size_increment(const Gfx::Size& increment) { m_size_increment = increment; }
+    void set_size_increment(const Gfx::Size&);
     Gfx::Size base_size() const { return m_base_size; }
-    void set_base_size(const Gfx::Size& size) { m_base_size = size; }
+    void set_base_size(const Gfx::Size&);
 
     void set_override_cursor(StandardCursor);
 

Servers/WindowServer/ClientConnection.cpp

@@ -714,4 +714,19 @@ void ClientConnection::deboost()
         perror("deboost: set_process_boost");
 }
 
+OwnPtr<Messages::WindowServer::SetWindowBaseSizeAndSizeIncrementResponse> ClientConnection::handle(const Messages::WindowServer::SetWindowBaseSizeAndSizeIncrement& message)
+{
+    auto it = m_windows.find(message.window_id());
+    if (it == m_windows.end()) {
+        did_misbehave("SetWindowBaseSizeAndSizeIncrementResponse: Bad window ID");
+        return nullptr;
+    }
+
+    auto& window = *it->value;
+    window.set_base_size(message.base_size());
+    window.set_size_increment(message.size_increment());
+
+    return make<Messages::WindowServer::SetWindowBaseSizeAndSizeIncrementResponse>();
+}
+
 }

Servers/WindowServer/ClientConnection.h

@@ -116,6 +116,7 @@ private:
     virtual OwnPtr<Messages::WindowServer::StartDragResponse> handle(const Messages::WindowServer::StartDrag&) override;
     virtual OwnPtr<Messages::WindowServer::SetSystemMenuResponse> handle(const Messages::WindowServer::SetSystemMenu&) override;
     virtual OwnPtr<Messages::WindowServer::SetSystemThemeResponse> handle(const Messages::WindowServer::SetSystemTheme&) override;
+    virtual OwnPtr<Messages::WindowServer::SetWindowBaseSizeAndSizeIncrementResponse> handle(const Messages::WindowServer::SetWindowBaseSizeAndSizeIncrement&) override;
 
     HashMap<int, NonnullRefPtr<Window>> m_windows;
     HashMap<int, NonnullOwnPtr<MenuBar>> m_menubars;

Servers/WindowServer/WindowServer.ipc

@@ -83,4 +83,6 @@ endpoint WindowServer = 2
     StartDrag(String text, String data_type, String data, i32 bitmap_id, Gfx::Size bitmap_size) => (bool started)
 
     SetSystemTheme(String theme_path, String theme_name) => (bool success)
+
+    SetWindowBaseSizeAndSizeIncrement(i32 window_id, Gfx::Size base_size, Gfx::Size size_increment) => ()
 }