From 8b4b4cd7f256e08c48fdbe2e822126e1f63563a2 Mon Sep 17 00:00:00 2001
From: Nicolai Weitkemper <kontakt@nicolaiweitkemper.de>
Date: Thu, 17 Nov 2022 11:32:27 +0100
Subject: [PATCH] change number seed on undo/redo (proof of concept)

fixes #308
---
 src/annotations/misc/NumberManager.cpp | 1 +
 src/annotations/undo/AddCommand.cpp    | 8 ++++++++
 2 files changed, 9 insertions(+)

diff --git a/src/annotations/misc/NumberManager.cpp b/src/annotations/misc/NumberManager.cpp
index 3caa07ed..4752fbbe 100644
--- a/src/annotations/misc/NumberManager.cpp
+++ b/src/annotations/misc/NumberManager.cpp
@@ -90,6 +90,7 @@ void NumberManager::setNumberSeed(int numberSeed)
 {
 	mNumberSeed = numberSeed;
 	updateExistingNumbersIfRequired();
+	emit numberSeedChanged(mNumberSeed);
 }
 
 int NumberManager::numberSeed() const
diff --git a/src/annotations/undo/AddCommand.cpp b/src/annotations/undo/AddCommand.cpp
index 4b724261..1d12df76 100644
--- a/src/annotations/undo/AddCommand.cpp
+++ b/src/annotations/undo/AddCommand.cpp
@@ -31,12 +31,20 @@ void AddCommand::undo()
 {
     mAnnotationArea->removeAnnotationItem(mItem);
     mItem->hide();
+
+    if (auto numberItem = dynamic_cast<BaseAnnotationNumber *>(mItem)) {
+        mAnnotationArea->numberToolSeedChanged(numberItem->number());
+    }
 }
 
 void AddCommand::redo()
 {
     mAnnotationArea->addAnnotationItem(mItem);
     mItem->show();
+
+    if (auto numberItem = dynamic_cast<BaseAnnotationNumber *>(mItem)) {
+        mAnnotationArea->numberToolSeedChanged(numberItem->number() + 1);
+    }
 }
 
 } // namespace kImageAnnotator