From 5de99c3dbde4a614745276533f7d183e5e691d2c Mon Sep 17 00:00:00 2001
From: octaeder <102688820+octaeder@users.noreply.github.com>
Date: Tue, 31 Dec 2024 16:58:35 +0100
Subject: [PATCH] fix pdf scroll bar

---
 src/pdfviewer/PDFDocument.cpp | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/src/pdfviewer/PDFDocument.cpp b/src/pdfviewer/PDFDocument.cpp
index 73a127cba..b172dbf0e 100644
--- a/src/pdfviewer/PDFDocument.cpp
+++ b/src/pdfviewer/PDFDocument.cpp
@@ -2149,6 +2149,7 @@ void PDFWidget::setGridSize(int gx, int gy, bool setAsDefault)
 	getScrollArea()->goToPage(realPageIndex);
 	if (pi == realPageIndex)
 		reloadPage();
+	emit changedScaleOption(scaleOption);
 	//update();
 }
 
@@ -4465,8 +4466,14 @@ void PDFDocument::adjustScaleActions(autoScaleOption scaleOption)
 	} else if (scaleOption == kFitWindow) {
 		if (scrollArea->horizontalScrollBarPolicy() != Qt::ScrollBarAlwaysOff)
 			scrollArea->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
-		if (scrollArea->verticalScrollBarPolicy() != Qt::ScrollBarAlwaysOff)
-			scrollArea->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
+		if (scrollArea->getContinuous()) {
+			if (scrollArea->verticalScrollBarPolicy() != Qt::ScrollBarAlwaysOn)
+				scrollArea->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
+		}
+		else {
+			if (scrollArea->verticalScrollBarPolicy() != Qt::ScrollBarAlwaysOff)
+				scrollArea->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
+		}
 	} else {
 		if (scrollArea->horizontalScrollBarPolicy() != Qt::ScrollBarAsNeeded)
 			scrollArea->setHorizontalScrollBarPolicy(Qt::ScrollBarAsNeeded);