[nostalgia/studio] Start on ImGui version of Studio

src/nostalgia/studio/lib/editor.cpp

@@ -6,13 +6,12 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
  */
 
+#include <ox/std/string.hpp>
+
 #include "editor.hpp"
 
 namespace nostalgia::studio {
 
-Editor::Editor(QWidget *parent): QWidget(parent) {
-}
-
 void Editor::cut() {
 }
 
@@ -32,20 +31,20 @@ void Editor::save() {
 
 void Editor::setUnsavedChanges(bool uc) {
     m_unsavedChanges = uc;
-    emit unsavedChangesChanged(uc);
+    unsavedChangesChanged.emit(uc);
 }
 
 bool Editor::unsavedChanges() const noexcept {
 	return m_unsavedChanges;
 }
 
-QUndoStack *Editor::undoStack() {
+UndoStack *Editor::undoStack() {
 	return &m_cmdStack;
 }
 
 void Editor::setExportable(bool exportable) {
 	m_exportable = exportable;
-	emit exportableChanged(exportable);
+	exportableChanged.emit(exportable);
 }
 
 bool Editor::exportable() const {
@@ -54,7 +53,7 @@ bool Editor::exportable() const {
 
 void Editor::setCutEnabled(bool v) {
 	m_cutEnabled = v;
-	emit cutEnabledChanged(v);
+	cutEnabledChanged.emit(v);
 }
 
 bool Editor::cutEnabled() const {
@@ -63,7 +62,7 @@ bool Editor::cutEnabled() const {
 
 void Editor::setCopyEnabled(bool v) {
 	m_copyEnabled = v;
-	emit copyEnabledChanged(v);
+	copyEnabledChanged.emit(v);
 }
 
 bool Editor::copyEnabled() const {
@@ -72,7 +71,7 @@ bool Editor::copyEnabled() const {
 
 void Editor::setPasteEnabled(bool v) {
 	m_pasteEnabled = v;
-	emit pasteEnabledChanged(v);
+	pasteEnabledChanged.emit(v);
 }
 
 bool Editor::pasteEnabled() const {