From 2f1545de38cf8a40250fb999944f7c03ddf58ab7 Mon Sep 17 00:00:00 2001
From: evgeny <evgeny@adaptto.ru>
Date: Mon, 21 Sep 2026 00:51:48 +0300
Subject: [PATCH] =?UTF-8?q?chatgui:=20fix=20Qt5=20build=20=E2=80=94=20QMou?=
 =?UTF-8?q?seEvent/QWheelEvent=20position()=20->=20localPos()/posF()?=
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---
 tools/chatgui/src/imageviewer_window.cpp | 22 +++++++++++++++++++---
 1 file changed, 19 insertions(+), 3 deletions(-)

diff --git a/tools/chatgui/src/imageviewer_window.cpp b/tools/chatgui/src/imageviewer_window.cpp
index 4d1314ff..858596ca 100644
--- a/tools/chatgui/src/imageviewer_window.cpp
+++ b/tools/chatgui/src/imageviewer_window.cpp
@@ -15,6 +15,22 @@
 #include <QEasingCurve>
 #include <QtMath>
 
+static QPointF mouseLocalPos(const QMouseEvent* e) {
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+    return e->position();
+#else
+    return e->localPos();
+#endif
+}
+
+static QPointF wheelPos(const QWheelEvent* e) {
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+    return e->position();
+#else
+    return e->posF();
+#endif
+}
+
 ImageViewerWindow::ImageViewerWindow(QWidget *parent)
     : QWidget(parent)
 {
@@ -138,7 +154,7 @@ void ImageViewerWindow::wheelEvent(QWheelEvent* e) {
     if (qFuzzyCompare(newScale, m_scale)) return;
 
     /* зум в точку курсора */
-    QPointF cursor = e->position();
+    QPointF cursor = wheelPos(e);
     QPointF center((double)width() / 2.0, (double)height() / 2.0);
     double ratio = newScale / m_scale;
     m_offset = (m_offset - (cursor - center)) * ratio + (cursor - center);
@@ -151,7 +167,7 @@ void ImageViewerWindow::wheelEvent(QWheelEvent* e) {
 void ImageViewerWindow::mousePressEvent(QMouseEvent* e) {
     if (e->button() == Qt::LeftButton && m_scale > 1.0) {
         m_dragging = true;
-        m_dragStart = e->position();
+        m_dragStart = mouseLocalPos(e);
         m_offsetStart = m_offset;
         setCursor(Qt::ClosedHandCursor);
         e->accept();
@@ -163,7 +179,7 @@ void ImageViewerWindow::mousePressEvent(QMouseEvent* e) {
 void ImageViewerWindow::mouseMoveEvent(QMouseEvent* e) {
     showOverlay();
     if (m_dragging) {
-        m_offset = m_offsetStart + (e->position() - m_dragStart);
+        m_offset = m_offsetStart + (mouseLocalPos(e) - m_dragStart);
         clampOffset();
         update();
         e->accept();