Implement unison labels

Author: mike-spa

src/engraving/dom/dom.cmake

@@ -295,6 +295,8 @@ set(DOM_SRC
     ${CMAKE_CURRENT_LIST_DIR}/stafftext.h
     ${CMAKE_CURRENT_LIST_DIR}/stafftextbase.cpp
     ${CMAKE_CURRENT_LIST_DIR}/stafftextbase.h
+    ${CMAKE_CURRENT_LIST_DIR}/stavesharinglabel.cpp
+    ${CMAKE_CURRENT_LIST_DIR}/stavesharinglabel.h
     ${CMAKE_CURRENT_LIST_DIR}/soundflag.cpp
     ${CMAKE_CURRENT_LIST_DIR}/soundflag.h
     ${CMAKE_CURRENT_LIST_DIR}/stafftype.cpp

src/engraving/dom/engravingobject.h

@@ -160,6 +160,7 @@ class Staff;
 class StaffLines;
 class StaffState;
 class StaffText;
+class StaveSharingLabel;
 class StaffTextBase;
 class StaffTypeChange;
 class StaffVisibilityIndicator;
@@ -441,6 +442,7 @@ class EngravingObject
     CONVERT(MeasureNumber, MEASURE_NUMBER)
     CONVERT(MMRestRange,   MMREST_RANGE)
     CONVERT(StaffText,     STAFF_TEXT)
+    CONVERT(StaveSharingLabel, STAVE_SHARING_LABEL)
     CONVERT(SystemText,    SYSTEM_TEXT)
     CONVERT(SoundFlag,     SOUND_FLAG)
     CONVERT(PlayCountText, PLAY_COUNT_TEXT)
@@ -571,7 +573,8 @@ class EngravingObject
 
     bool isStaffTextBase() const
     {
-        return isStaffText() || isSystemText() || isTripletFeel() || isPlayTechAnnotation() || isCapo() || isStringTunings();
+        return isStaffText() || isStaveSharingLabel() || isSystemText() || isTripletFeel() || isPlayTechAnnotation() || isCapo()
+               || isStringTunings();
     }
 
     bool isArticulationFamily() const
@@ -672,6 +675,7 @@ CONVERT(TripletFeel)
 CONVERT(Harmony)
 CONVERT(Jump)
 CONVERT(StaffText)
+CONVERT(StaveSharingLabel);
 CONVERT(StaffTextBase)
 CONVERT(TextBase)
 CONVERT(TextLineBase)

src/engraving/dom/factory.cpp

@@ -95,6 +95,7 @@
 #include "stafftext.h"
 #include "stafftypechange.h"
 #include "staffvisibilityindicator.h"
+#include "stavesharinglabel.h"
 #include "stem.h"
 #include "stemslash.h"
 #include "sticking.h"
@@ -180,6 +181,7 @@ EngravingItem* Factory::doCreateItem(ElementType type, EngravingItem* parent)
     case ElementType::MMREST_RANGE:      return new MMRestRange(parent->isMeasure() ? toMeasure(parent) : dummy->measure());
     case ElementType::INSTRUMENT_NAME:   return new InstrumentName(parent->isSystem() ? toSystem(parent) : dummy->system());
     case ElementType::STAFF_TEXT:        return new StaffText(parent->isSegment() ? toSegment(parent) : dummy->segment());
+    case ElementType::STAVE_SHARING_LABEL: return new StaveSharingLabel(parent->isSegment() ? toSegment(parent) : dummy->segment());
     case ElementType::PLAY_COUNT_TEXT:   return new PlayCountText(parent->isSegment() ? toSegment(parent) : dummy->segment());
     case ElementType::PLAYTECH_ANNOTATION: return new PlayTechAnnotation(parent->isSegment() ? toSegment(parent) : dummy->segment());
     case ElementType::CAPO:              return new Capo(parent->isSegment() ? toSegment(parent) : dummy->segment());
@@ -538,6 +540,13 @@ StaffText* Factory::createStaffText(Segment * parent, TextStyleType textStyleTyp
     return staffText;
 }
 
+StaveSharingLabel* Factory::createStaveSharingLabel(Segment* parent, TextStyleType textStyleType, bool isAccessibleEnabled)
+{
+    StaveSharingLabel* staveSharingLabel = new StaveSharingLabel(parent, textStyleType);
+    staveSharingLabel->setAccessibleEnabled(isAccessibleEnabled);
+    return staveSharingLabel;
+}
+
 CREATE_ITEM_IMPL(SoundFlag, EngravingItem, isAccessibleEnabled)
 
 CREATE_ITEM_IMPL(Expression, Segment, isAccessibleEnabled)

src/engraving/dom/factory.h

@@ -185,6 +185,8 @@ class Factory
     static std::shared_ptr<StaffTypeChange> makeStaffTypeChange(MeasureBase* parent);
 
     static StaffText* createStaffText(Segment* parent, TextStyleType textStyleType = TextStyleType::STAFF, bool isAccessibleEnabled = true);
+    static StaveSharingLabel* createStaveSharingLabel(Segment* parent, TextStyleType textStyleType = TextStyleType::STAVE_SHARING,
+                                                      bool isAccessibleEnabled = true);
 
     static SoundFlag* createSoundFlag(EngravingItem* parent, bool isAccessibleEnabled = true);
 

src/engraving/dom/segment.cpp

@@ -704,6 +704,7 @@ void Segment::add(EngravingItem* el)
     case ElementType::EXPRESSION:
     case ElementType::SYMBOL:
     case ElementType::STAFF_TEXT:
+    case ElementType::STAVE_SHARING_LABEL:
     case ElementType::SYSTEM_TEXT:
     case ElementType::TRIPLET_FEEL:
     case ElementType::PLAYTECH_ANNOTATION:
@@ -905,6 +906,7 @@ void Segment::remove(EngravingItem* el)
     case ElementType::MARKER:
     case ElementType::REHEARSAL_MARK:
     case ElementType::STAFF_TEXT:
+    case ElementType::STAVE_SHARING_LABEL:
     case ElementType::SYSTEM_TEXT:
     case ElementType::TRIPLET_FEEL:
     case ElementType::PLAYTECH_ANNOTATION:
@@ -1974,6 +1976,7 @@ EngravingItem* Segment::nextElement(staff_idx_t activeStaff)
     case ElementType::FRET_DIAGRAM:
     case ElementType::TEMPO_TEXT:
     case ElementType::STAFF_TEXT:
+    case ElementType::STAVE_SHARING_LABEL:
     case ElementType::SYSTEM_TEXT:
     case ElementType::TRIPLET_FEEL:
     case ElementType::PLAYTECH_ANNOTATION:
@@ -2192,6 +2195,7 @@ EngravingItem* Segment::prevElement(staff_idx_t activeStaff)
     case ElementType::FRET_DIAGRAM:
     case ElementType::TEMPO_TEXT:
     case ElementType::STAFF_TEXT:
+    case ElementType::STAVE_SHARING_LABEL:
     case ElementType::SOUND_FLAG:
     case ElementType::SYSTEM_TEXT:
     case ElementType::TRIPLET_FEEL:

src/engraving/dom/select.cpp

@@ -1150,6 +1150,7 @@ muse::ByteArray Selection::symbolListMimeData() const
         case ElementType::CAPO:
         case ElementType::STRING_TUNINGS:
         case ElementType::STAFF_TEXT:
+        case ElementType::STAVE_SHARING_LABEL:
             seg = toStaffTextBase(e)->segment();
             break;
         case ElementType::EXPRESSION:

src/engraving/dom/stavesharinglabel.cpp

@@ -0,0 +1,35 @@
+/*
+ * SPDX-License-Identifier: GPL-3.0-only
+ * MuseScore-Studio-CLA-applies
+ *
+ * MuseScore Studio
+ * Music Composition & Notation
+ *
+ * Copyright (C) 2026 MuseScore Limited and others
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 3 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+#include "stavesharinglabel.h"
+
+namespace mu::engraving {
+static const ElementStyle STAVE_SHARING_LABEL_STYLE {
+    { Sid::staveSharingLabelPlacement, Pid::PLACEMENT },
+    { Sid::staveSharingLabelMinDistance, Pid::MIN_DISTANCE },
+};
+
+StaveSharingLabel::StaveSharingLabel(Segment* parent, TextStyleType tid)
+    : StaffTextBase(ElementType::STAVE_SHARING_LABEL, parent, tid, ElementFlag::MOVABLE | ElementFlag::ON_STAFF)
+{
+    initElementStyle(&STAVE_SHARING_LABEL_STYLE);
+}
+} // namespace mu::engraving

src/engraving/dom/stavesharinglabel.h

@@ -0,0 +1,39 @@
+/*
+ * SPDX-License-Identifier: GPL-3.0-only
+ * MuseScore-Studio-CLA-applies
+ *
+ * MuseScore Studio
+ * Music Composition & Notation
+ *
+ * Copyright (C) 2026 MuseScore Limited and others
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 3 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+#pragma once
+
+#include "stafftextbase.h"
+
+namespace mu::engraving {
+class StaveSharingLabel final : public StaffTextBase
+{
+    OBJECT_ALLOCATOR(engraving, StaveSharingLabel)
+    DECLARE_CLASSOF(ElementType::STAVE_SHARING_LABEL)
+
+public:
+    StaveSharingLabel(Segment* parent = nullptr, TextStyleType tid = TextStyleType::STAVE_SHARING);
+
+    bool isEditAllowed(EditData&) const override { return false; }
+
+    StaveSharingLabel* clone() const override { return new StaveSharingLabel(*this); }
+};
+} // namespace mu::engraving

src/engraving/editing/edit.cpp

@@ -6400,6 +6400,7 @@ void Score::undoAddElement(EngravingItem* element, bool addToLinkedStaves, bool
             && et != ElementType::DYNAMIC
             && et != ElementType::EXPRESSION
             && et != ElementType::STAFF_TEXT
+            && et != ElementType::STAVE_SHARING_LABEL
             && et != ElementType::SYSTEM_TEXT
             && et != ElementType::TRIPLET_FEEL
             && et != ElementType::PLAYTECH_ANNOTATION
@@ -6608,6 +6609,7 @@ void Score::undoAddElement(EngravingItem* element, bool addToLinkedStaves, bool
                  || element->isDynamic()
                  || element->isExpression()
                  || element->isStaffText()
+                 || element->isStaveSharingLabel()
                  || element->isPlayTechAnnotation()
                  || element->isCapo()
                  || element->isStringTunings()

src/engraving/rendering/editmode/editmoderenderer.cpp

@@ -109,6 +109,7 @@ void EditModeRenderer::drawItem(const EngravingItem* item, muse::draw::Painter*
         drawSlurTieSegment(item_cast<const SlurTieSegment*>(item), painter, ed, currentViewScaling, opt);
         break;
     case ElementType::STAFF_TEXT:
+    case ElementType::STAVE_SHARING_LABEL:
         drawTextBase(item_cast<const TextBase*>(item), painter, ed, currentViewScaling, opt);
         break;
     case ElementType::STICKING: