[krita] libs/ui: Update the undo limit if it has changed

[Boudewijn Rempt]

Git commit 367c7973f7048968298aeb278f01127531c0ddce by Boudewijn Rempt.
Committed on 03/05/2019 at 11:24.
Pushed by rempt into branch 'master'.

Update the undo limit if it has changed

Note: this clears the undo stack, because otherwise we couldn't
update the limit.

CCMAIL:kimageshop at kde.org

M  +5    -1    libs/ui/KisDocument.cpp

https://invent.kde.org/kde/krita/commit/367c7973f7048968298aeb278f01127531c0ddce

diff --git a/libs/ui/KisDocument.cpp b/libs/ui/KisDocument.cpp
index 8081036d55..272237a5f3 100644
--- a/libs/ui/KisDocument.cpp
+++ b/libs/ui/KisDocument.cpp
@@ -1581,7 +1581,11 @@ void KisDocument::slotUndoStackCleanChanged(bool value)
 void KisDocument::slotConfigChanged()
 {
     KisConfig cfg(true);
-    d->undoStack->setUndoLimit(cfg.undoStackLimit());
+    if (!d->undoStack->isClean() && d->undoStack->undoLimit() != cfg.undoStackLimit()) {
+        d->undoStack->clear();
+        d->undoStack->setUndoLimit(cfg.undoStackLimit());
+    }
+
     d->autoSaveDelay = cfg.autoSaveInterval();
     setNormalAutoSaveInterval();
 }