[studio,nostalgia/gfx/studio/tilesheet] Fix copy/cut/paste enablement when there is no selection

release-notes.md

@@ -5,6 +5,7 @@
 * Fix file deletion to close file even if not active
 * Fix file copy to work when creating a copy with the name of a previously
   deleted file
+* Fix copy/cut/paste enablement when there is no selection
 * Make file picker popup accept on double click of a file
 * PaletteEditor: Add RGB key shortcuts for focusing color channels
 * PaletteEditor: Add color preview to color editor

src/nostalgia/modules/gfx/src/studio/tilesheeteditor/tilesheeteditor-imgui.cpp

@@ -192,6 +192,8 @@ void TileSheetEditorImGui::keyStateChanged(turbine::Key const key, bool const do
 }
 
 void TileSheetEditorImGui::draw(studio::Context&) noexcept {
+	setCopyEnabled(m_model.hasSelection());
+	setCutEnabled(m_model.hasSelection());
 	if (ig::mainWinHasFocus() && m_tool == TileSheetTool::Select) {
 		if (ImGui::IsKeyDown(ImGuiKey_ModCtrl) && !m_palPathFocused) {
 			if (ImGui::IsKeyPressed(ImGuiKey_A)) {

src/nostalgia/modules/gfx/src/studio/tilesheeteditor/tilesheeteditormodel.cpp

@@ -315,6 +315,10 @@ void TileSheetEditorModel::clearSelection() noexcept {
 	m_selection.reset();
 }
 
+bool TileSheetEditorModel::hasSelection() const noexcept {
+	return m_selection.has_value();
+}
+
 bool TileSheetEditorModel::updated() const noexcept {
 	return m_updated;
 }

src/nostalgia/modules/gfx/src/studio/tilesheeteditor/tilesheeteditormodel.hpp

@@ -118,6 +118,9 @@ class TileSheetEditorModel final: public ox::SignalHandler {
 
 		void clearSelection() noexcept;
 
+		[[nodiscard]]
+		bool hasSelection() const noexcept;
+
 		[[nodiscard]]
 		bool updated() const noexcept;
 

src/olympic/studio/modlib/src/editor.cpp

@@ -72,8 +72,10 @@ bool BaseEditor::exportable() const noexcept {
 }
 
 void BaseEditor::setCutEnabled(bool v) {
-	m_cutEnabled = v;
+	if (m_cutEnabled != v) {
-	cutEnabledChanged.emit(v);
+		m_cutEnabled = v;
+		cutEnabledChanged.emit(v);
+	}
 }
 
 bool BaseEditor::cutEnabled() const noexcept {
@@ -81,8 +83,10 @@ bool BaseEditor::cutEnabled() const noexcept {
 }
 
 void BaseEditor::setCopyEnabled(bool v) {
-	m_copyEnabled = v;
+	if (m_copyEnabled != v) {
-	copyEnabledChanged.emit(v);
+		m_copyEnabled = v;
+		copyEnabledChanged.emit(v);
+	}
 }
 
 bool BaseEditor::copyEnabled() const noexcept {
@@ -90,8 +94,10 @@ bool BaseEditor::copyEnabled() const noexcept {
 }
 
 void BaseEditor::setPasteEnabled(bool v) {
-	m_pasteEnabled = v;
+	if (m_pasteEnabled != v) {
-	pasteEnabledChanged.emit(v);
+		m_pasteEnabled = v;
+		pasteEnabledChanged.emit(v);
+	}
 }
 
 bool BaseEditor::pasteEnabled() const noexcept {