add insert row

Pressing `Ins` in the pattern editor will insert an empty row at the cursor,
shifting all rows below it down by 1.

.gitignore

@@ -4,3 +4,5 @@ out/
 tools/
 CMakeSettings.json
 CMakeLists.txt.user
+*.kdev4
+.kdev4/

src/config/data/ShortcutTable.cpp

@@ -52,6 +52,8 @@ QKeySequence ShortcutTable::getDefault(Shortcut shortcut) noexcept {
             return tr("Return");
         case PasteMix:
             return tr("Ctrl+M");
+        case InsertRow:
+            return tr("Ins");
         case TransposeDecNote:
             return tr("Ctrl+F1");
         case TransposeIncNote:

src/config/data/ShortcutTable.hpp

@@ -30,6 +30,7 @@ class ShortcutTable {
         PlayStop,
         // QAction
         PasteMix,
+        InsertRow,
         TransposeDecNote,
         TransposeIncNote,
         TransposeDecOctave,

src/config/tabs/KeyboardConfigTab.cpp

@@ -39,6 +39,7 @@ static std::array const SHORTCUT_NAMES = {
     QT_TR_NOOP("Decrement octave"),
     QT_TR_NOOP("Play / Stop"),
     QT_TR_NOOP("Mix paste"),
+    QT_TR_NOOP("Insert row"),
     QT_TR_NOOP("Transpose, decrease note"),
     QT_TR_NOOP("Transpose, increase note"),
     QT_TR_NOOP("Transpose, decrease octave"),

src/forms/MainWindow/actions.cpp

@@ -118,6 +118,11 @@ void MainWindow::createActions(TableActions const& instrumentActions, TableActio
     act->setData(ShortcutTable::PasteMix);
     connectActionTo(act, mPatternEditor, pasteMix);
 
+    act = setupAction(menuEdit, tr("&Insert Row"), tr("Inserts an empty row at the cursor"));
+    act->setData(ShortcutTable::InsertRow);
+    connectActionTo(act, mPatternEditor, insertRow);
+
+
     act = setupAction(menuEdit, tr("&Erase"), tr("Erases selection contents"), QKeySequence::Delete);
     connectActionTo(act, mPatternEditor, erase);
 

src/model/PatternModel.cpp

@@ -934,6 +934,13 @@ void PatternModel::backspace() {
     }
 }
 
+void PatternModel::insertRow() {
+    auto cmd = new InsertRowCmd(*this);
+    cmd->setText(tr("insert row"));
+    mModule.undoStack()->push(cmd);
+
+}
+
 void PatternModel::setOrderRow(trackerboy::OrderRow row) {
     if (order()[mCursorPattern] != row) {
         auto cmd = new OrderEditCmd(*this, row, mCursorPattern);

src/model/PatternModel.hpp

@@ -180,6 +180,8 @@ class PatternModel : public QObject {
 
     void backspace();
 
+    void insertRow();
+
     // order
 
     //
@@ -281,6 +283,7 @@ class PatternModel : public QObject {
     friend class OrderRemoveCmd;
     friend class OrderDuplicateCmd;
     friend class OrderSwapCmd;
+    friend class InsertRowCmd;
 
     Q_DISABLE_COPY(PatternModel)
 

src/model/commands/pattern.cpp

@@ -381,3 +381,40 @@ void BackspaceCmd::undo() {
     mModel.invalidate(mPattern, true);
 }
 
+InsertRowCmd::InsertRowCmd(PatternModel& model, QUndoCommand* parent) :
+    QUndoCommand(parent),
+    mModel(model),
+    mPattern(model.mCursorPattern),
+    mTrack(model.mCursor.track),
+    mRow(model.mCursor.row),
+    mLastRow(model.source()->patterns().length() - 1),
+    mTruncated(model.currentPattern()[mLastRow][mTrack])
+{
+}
+
+void InsertRowCmd::redo() {
+    {
+        auto editor = mModel.mModule.edit();
+        auto &track = mModel.source()->patterns().getTrack(static_cast<trackerboy::ChType>(mTrack), mPattern);
+        // shift down
+        for (auto i = mLastRow; i > mRow; --i) {
+            track[i] = track[i - 1];
+        }
+        track[mRow] = {};
+    }
+    mModel.invalidate(mPattern, true);
+}
+
+void InsertRowCmd::undo() {
+    {
+        auto editor = mModel.mModule.edit();
+        auto &track = mModel.source()->patterns().getTrack(static_cast<trackerboy::ChType>(mTrack), mPattern);
+        // shift up
+        for (auto i = mRow; i < mLastRow; ++i) {
+            track[i] = track[i + 1];
+        }
+        track[mLastRow] = mTruncated;
+    }
+    mModel.invalidate(mPattern, true);
+}
+

src/model/commands/pattern.hpp

@@ -258,3 +258,20 @@ class BackspaceCmd : public QUndoCommand {
     virtual void undo() override;
 
 };
+
+class InsertRowCmd : public QUndoCommand {
+
+    PatternModel &mModel;
+    int const mPattern;
+    int const mTrack;
+    int const mRow;
+    int const mLastRow;
+    trackerboy::TrackRow const mTruncated;
+
+public:
+    explicit InsertRowCmd(PatternModel &model, QUndoCommand *parent = nullptr);
+
+    virtual void redo() override;
+
+    virtual void undo() override;
+};

src/widgets/PatternEditor.cpp

@@ -459,6 +459,10 @@ void PatternEditor::pasteMix() {
     pasteImpl(true);
 }
 
+void PatternEditor::insertRow() {
+    mModel.insertRow();
+}
+
 void PatternEditor::pasteImpl(bool mix) {
     if (mClipboard.hasClip()) {
         auto &clip = mClipboard.clip();

src/widgets/PatternEditor.hpp

@@ -60,6 +60,8 @@ class PatternEditor : public QFrame, public IMidiReceiver {
 
     void pasteMix();
 
+    void insertRow();
+
     void erase();
 
     void selectAll();