From ab811c363c14b3441c93096957da9e5f66da6080 Mon Sep 17 00:00:00 2001
From: Zithia Satazaki <qmanxt@gmail.com>
Date: Tue, 29 Mar 2022 15:58:16 -0400
Subject: [PATCH] negate selection

---
 notes                                   |  2 +-
 xybrid/ui/patterneditoritemdelegate.cpp | 24 ++++++++++++++++++++++++
 2 files changed, 25 insertions(+), 1 deletion(-)

diff --git a/notes b/notes
index 864fe1a..46101db 100644
--- a/notes
+++ b/notes
@@ -45,7 +45,7 @@ TODO {
     - fix strut not working except to overwrite another param
     
     - add negate function to param columns
-    multi select negate
+    - multi select negate
     
     revert-to-saved menu action
     
diff --git a/xybrid/ui/patterneditoritemdelegate.cpp b/xybrid/ui/patterneditoritemdelegate.cpp
index ab12269..84c2dc6 100644
--- a/xybrid/ui/patterneditoritemdelegate.cpp
+++ b/xybrid/ui/patterneditoritemdelegate.cpp
@@ -238,6 +238,30 @@ bool PatternEditorItemDelegate::editorEvent(QEvent *event, QAbstractItemModel *m
 
                     return cc->commit("delete selection");
                 }
+                if (k == Qt::Key_Minus) {
+                    dc->cancel();
+                    SelectionBounds s(sel);
+                    auto cc = (new CompositeCommand())->reserve((1 + s.y2 - s.y1) * (1 + s.ch2 - s.ch1));
+
+                    for (int c = s.ch1; c <= s.ch2; c++) {
+                        if (c == s.ch2 && s.x2 < 2) continue; // no params selected here
+                        for (int r = s.y1; r <= s.y2; r++) {
+                            auto dc = new PatternDeltaCommand(p, c, r-1);
+                            //auto min = c == s.ch1 ? std::max(0, s.x1 - 2) : 0;
+                            //auto max = c == s.ch2 ? s.x2 - 2 : PatternEditorModel::paramSoftCap;
+
+                            for (auto i = 0; i < static_cast<int>(dc->row.numParams()); i++) {
+                                if (s.paramSelected(c, i)) {
+                                    auto& pr = dc->row.param(i);
+                                    if (pr[0] != ' ') pr[1] *= -1;
+                                }
+                            }
+                            cc->compose(dc);
+                        }
+                    }
+
+                    return cc->commit("negate selection");
+                }
 
                 // for all other commands, reset selection to cursor and defer
                 sm->setCurrentIndex(index, QItemSelectionModel::ClearAndSelect);