From de676a0fcb0924a54edda53dbbf49a72991d0f6b Mon Sep 17 00:00:00 2001
From: luisangelsm <luisangelsm@gmail.com>
Date: Fri, 6 Mar 2026 17:18:14 +0100
Subject: [PATCH] Use the new resize image API to resize the pages while
 reading

---
 YACReader/continuous_page_widget.cpp |  4 +++-
 YACReader/viewer.cpp                 | 18 ++++++++++--------
 2 files changed, 13 insertions(+), 9 deletions(-)

diff --git a/YACReader/continuous_page_widget.cpp b/YACReader/continuous_page_widget.cpp
index 65e1361b..17b3f9c3 100644
--- a/YACReader/continuous_page_widget.cpp
+++ b/YACReader/continuous_page_widget.cpp
@@ -1,6 +1,7 @@
 #include "continuous_page_widget.h"
 #include "continuous_view_model.h"
 #include "render.h"
+#include "resize_image.h"
 
 #include <QPainter>
 #include <QPaintEvent>
@@ -183,7 +184,8 @@ const QImage *ContinuousPageWidget::scaledImageForPaint(int pageIndex, const QIm
     entry.sourceCacheKey = sourceKey;
     entry.sourceSize = source->size();
     entry.targetSize = targetSize;
-    entry.scaledImage = source->scaled(targetSize, Qt::IgnoreAspectRatio, Qt::SmoothTransformation);
+    entry.scaledImage = scaleImage(*source, targetSize.width(), targetSize.height(),
+                                   Configuration::getConfiguration().getScalingMethod());
     scaledPageCache.pages.insert(pageIndex, std::move(entry));
 
     return &scaledPageCache.pages[pageIndex].scaledImage;
diff --git a/YACReader/viewer.cpp b/YACReader/viewer.cpp
index 4533bbbe..fd5adefa 100644
--- a/YACReader/viewer.cpp
+++ b/YACReader/viewer.cpp
@@ -1,6 +1,7 @@
 #include "viewer.h"
 #include "continuous_page_widget.h"
 #include "continuous_view_model.h"
+#include "resize_image.h"
 #include "configuration.h"
 #include "magnifying_glass.h"
 #include "goto_flow_widget.h"
@@ -433,16 +434,17 @@ void Viewer::updateContentSize()
         if (zoom != 100) {
             pagefit.scale(floor(pagefit.width() * zoom / 100.0f), 0, Qt::KeepAspectRatioByExpanding);
         }
-        // apply scaling
+        // apply size to the container
         content->resize(pagefit);
 
-        // TODO: updtateContentSize should only scale the pixmap once
-        if (devicePixelRatioF() > 1) // only in HDPI displays
-        {
-            QPixmap page = currentPage->scaled(content->width() * devicePixelRatioF(), content->height() * devicePixelRatioF(), Qt::KeepAspectRatio, Qt::SmoothTransformation);
-            page.setDevicePixelRatio(devicePixelRatioF());
-            content->setPixmap(page);
-        }
+        // scale the pixmap to physical pixels for crisp rendering on all displays
+        auto dpr = devicePixelRatioF();
+        QPixmap page = scalePixmap(*currentPage,
+                                   qRound(content->width() * dpr),
+                                   qRound(content->height() * dpr),
+                                   Configuration::getConfiguration().getScalingMethod());
+        page.setDevicePixelRatio(dpr);
+        content->setPixmap(page);
 
         emit backgroundChanges();
     }