[graphics/krita] libs/ui: Extend range to 10x, more sensible default 5x. Some minor refractor

Git commit 05f90bc056a71152a4886fff4435cdeb1c3e99e6 by Emmet O'Neill, on behalf of Le Tien Dat.
Committed on 13/08/2026 at 23:16.
Pushed by emmetoneill into branch 'master'.

Extend range to 10x, more sensible default 5x. Some minor refractor

M  +1    -1    libs/ui/dialogs/kis_dlg_preferences.cc
M  +1    -1    libs/ui/kis_config.cc
M  +4    -4    libs/ui/tool/KisAsyncColorSamplerHelper.cpp

https://invent.kde.org/graphics/krita/-/commit/05f90bc056a71152a4886fff4435cdeb1c3e99e6

diff --git a/libs/ui/dialogs/kis_dlg_preferences.cc b/libs/ui/dialogs/kis_dlg_preferences.cc
index fb5aefd2e1a..c6520043bbd 100644
--- a/libs/ui/dialogs/kis_dlg_preferences.cc
+++ b/libs/ui/dialogs/kis_dlg_preferences.cc
@@ -329,7 +329,7 @@ GeneralTab::GeneralTab(QWidget *_parent, const char *_name)
 
     m_chkColorSamplerPreviewExtraCircles->setChecked(cfg.colorSamplerPreviewCircleExtraCirclesEnabled());
 
-    m_ssbColorSamplerZoomPreviewScale->setRange(100, 500);
+    m_ssbColorSamplerZoomPreviewScale->setRange(100, 1000);
     m_ssbColorSamplerZoomPreviewScale->setSingleStep(25);
     m_ssbColorSamplerZoomPreviewScale->setValue(cfg.colorSamplerZoomPreviewScale());
 
diff --git a/libs/ui/kis_config.cc b/libs/ui/kis_config.cc
index 155aa177014..6afecc2f9e6 100644
--- a/libs/ui/kis_config.cc
+++ b/libs/ui/kis_config.cc
@@ -571,7 +571,7 @@ void KisConfig::setColorSamplerPreviewCircleThickness(qreal thickness)
 
 
 qreal KisConfig::colorSamplerZoomPreviewScale(bool defaultValue) const {
-    qreal def = 200;
+    qreal def = 500;
     if (!defaultValue) {
         return m_cfg.readEntry("colorSamplerZoomPreviewScale", def);
     }
diff --git a/libs/ui/tool/KisAsyncColorSamplerHelper.cpp b/libs/ui/tool/KisAsyncColorSamplerHelper.cpp
index 00348eb856d..b0e8d6acc24 100644
--- a/libs/ui/tool/KisAsyncColorSamplerHelper.cpp
+++ b/libs/ui/tool/KisAsyncColorSamplerHelper.cpp
@@ -625,6 +625,8 @@ void KisAsyncColorSamplerHelper::paintCircleReferenceImagePreview(QPainter &gc,
         QPolygonF outline = refImage->absoluteTransformation().map(refImage->outlineRect());
         if (!outline.intersects(QPolygonF(sampleDocRectF))) continue;
 
+        gc.save();
+
         QImage image = refImage->getCachedImage();
         // image.convertTo(QImage::Format_ARGB32); Do this in KisReferenceImage to avoid having to copy? and convert
 
@@ -642,11 +644,9 @@ void KisAsyncColorSamplerHelper::paintCircleReferenceImagePreview(QPainter &gc,
         gc.rotate(refImage->rotation());
         gc.translate(-viewRectF.center());
 
-        gc.drawImage(viewRectF, image.copy(sampleRefRectF.toRect()));
+        gc.drawImage(viewRectF, image, sampleRefRectF.toRect());
 
-        gc.translate(viewRectF.center());
-        gc.rotate(-refImage->rotation());
-        gc.translate(-viewRectF.center());
+        gc.restore();
     }
 
     gc.restore();