GMLPlayground: Move layout to GML

There isn't much layout right now, but it felt very wrong to not have
the GML editor use GML. :^)

Userland/DevTools/GMLPlayground/CMakeLists.txt

@@ -4,9 +4,15 @@ serenity_component(
  TARGETS GMLPlayground
 )
 
+compile_gml(GMLPlaygroundWindow.gml GMLPlaygroundWindowGML.h gml_playground_window_gml)
+
 set(SOURCES
  main.cpp
 )
 
+set(GENERATED_SOURCES
+ GMLPlaygroundWindowGML.h
+)
+
 serenity_app(GMLPlayground ICON app-gml-playground)
 target_link_libraries(GMLPlayground PRIVATE LibCore LibDesktop LibFileSystemAccessClient LibGfx LibGUI LibMain LibSyntax)

Userland/DevTools/GMLPlayground/GMLPlaygroundWindow.gml

@@ -0,0 +1,17 @@
+@GUI::Widget {
+ layout: @GUI::VerticalBoxLayout {}
+ fill_with_background_color: true
+
+ @GUI::HorizontalSplitter {
+ layout: @GUI::HorizontalBoxLayout {}
+ name: "splitter"
+
+ @GUI::TextEditor {
+ name: "text_editor"
+ }
+
+ @GUI::Frame {
+ name: "preview_frame"
+ }
+ }
+}

Userland/DevTools/GMLPlayground/main.cpp

@@ -2,6 +2,7 @@
  * Copyright (c) 2020-2021, Andreas Kling <[email protected]>
  * Copyright (c) 2021, Julius Heijmen <[email protected]>
  * Copyright (c) 2022, kleines Filmröllchen <[email protected]>
+ * Copyright (c) 2022-2023, Sam Atkins <[email protected]>
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -27,6 +28,7 @@
 #include <LibGUI/VimEditingEngine.h>
 #include <LibGUI/Window.h>
 #include <LibMain/Main.h>
+#include <Userland/DevTools/GMLPlayground/GMLPlaygroundWindowGML.h>
 
 namespace {
 
@@ -84,9 +86,12 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
  window->set_icon(app_icon.bitmap_for_size(16));
  window->resize(800, 600);
 
- auto splitter = TRY(window->set_main_widget<GUI::HorizontalSplitter>());
- auto editor = TRY(splitter->try_add<GUI::TextEditor>());
- auto preview_frame_widget = TRY(splitter->try_add<GUI::Frame>());
+ auto main_widget = TRY(window->set_main_widget<GUI::Widget>());
+ TRY(main_widget->load_from_gml(gml_playground_window_gml));
+
+ auto splitter = main_widget->find_descendant_of_type_named<GUI::HorizontalSplitter>("splitter");
+ auto editor = main_widget->find_descendant_of_type_named<GUI::TextEditor>("text_editor");
+ auto preview_frame_widget = main_widget->find_descendant_of_type_named<GUI::Frame>("preview_frame");
 
  auto preview_window = TRY(GUI::Window::try_create());
  preview_window->set_title("Preview - GML Playground");