WindowServer/LibGUI: Allow windows to set minimum size

userspace/libraries/LibGUI/Window.cpp

@@ -306,6 +306,16 @@ namespace LibGUI
 			return on_socket_error(__FUNCTION__);
 	}
 
+	void Window::set_min_size(uint32_t width, uint32_t height)
+	{
+		WindowPacket::WindowSetMinSize packet;
+		packet.width = width;
+		packet.height = height;
+
+		if (auto ret = packet.send_serialized(m_server_fd); ret.is_error())
+			return on_socket_error(__FUNCTION__);
+	}
+
 	void Window::set_attributes(Attributes attributes)
 	{
 		WindowPacket::WindowSetAttributes packet;

userspace/libraries/LibGUI/include/LibGUI/Packet.h

@@ -164,6 +164,7 @@ namespace LibGUI
 		WindowSetAttributes,
 		WindowSetMouseCapture,
 		WindowSetSize,
+		WindowSetMinSize,
 		WindowSetFullscreen,
 		WindowSetTitle,
 
@@ -227,6 +228,12 @@ namespace LibGUI
 			uint32_t, height
 		);
 
+		DEFINE_PACKET(
+			WindowSetMinSize,
+			uint32_t, width,
+			uint32_t, height
+		);
+
 		DEFINE_PACKET(
 			WindowSetFullscreen,
 			bool, fullscreen

userspace/libraries/LibGUI/include/LibGUI/Window.h

@@ -76,6 +76,8 @@ namespace LibGUI
 		Attributes get_attributes() const { return m_attributes; }
 		void set_attributes(Attributes attributes);
 
+		void set_min_size(uint32_t width, uint32_t height);
+
 		// send resize request to window server
 		// actual resize is only done after resize callback is called
 		void request_resize(uint32_t width, uint32_t height);