revert: remove auto long image mode

- remove auto long image mode.
- there is no "auto" requirement for this.
- user can utilize fit by height/width to achieve the same goal by manually click them.
- some optimization code about graphic view are preserved.

app/graphicsview.cpp

@@ -138,7 +138,6 @@ void GraphicsView::resetTransform()
 void GraphicsView::zoomView(qreal scaleFactor)
 {
     m_enableFitInView = false;
-    m_longImageMode = false;
     scale(scaleFactor, scaleFactor);
     applyTransformationModeByScaleFactor();
     emit navigatorViewRequired(!isThingSmallerThanWindowWith(transform()), transform());
@@ -280,31 +279,6 @@ void GraphicsView::fitByOrientation(Qt::Orientation ori, bool scaleDownOnly)
     emit navigatorViewRequired(!isThingSmallerThanWindowWith(transform()), transform());
 }
 
-bool GraphicsView::isLongImage() const
-{
-    // Get the transformed image size (considering rotation and other transforms)
-    QRectF transformedRect = transform().mapRect(sceneRect());
-    QSizeF imageSize = transformedRect.size();
-    
-    if (imageSize.isEmpty()) return false;
-    
-    qreal aspectRatio = imageSize.width() / imageSize.height();
-    
-    // Check if aspect ratio exceeds 5:2 (wide) or 2:5 (tall)
-    return aspectRatio > 2.5 || aspectRatio < 0.4;
-}
-
-void GraphicsView::fitLongImage()
-{
-    QRectF transformedRect = transform().mapRect(sceneRect());
-
-    if (transformedRect.width() < transformedRect.height()) {
-        fitByOrientation(Qt::Horizontal, true);
-    } else {
-        fitByOrientation(Qt::Vertical, true);
-    }
-}
-
 void GraphicsView::displayScene()
 {
     if (shouldAvoidTransform()) {
@@ -312,14 +286,6 @@ void GraphicsView::displayScene()
         return;
     }
 
-    // Check if should apply long image mode
-    if (Settings::instance()->autoLongImageMode() && isLongImage()) {
-        m_longImageMode = true;
-        m_firstUserMediaLoaded = true;
-        if (isSceneBiggerThanView()) fitLongImage();
-        return;
-    }
-
     if (isSceneBiggerThanView()) {
         // Do fit-in-view
         fitInView(sceneRect(), Qt::KeepAspectRatio);
@@ -330,7 +296,6 @@ void GraphicsView::displayScene()
         emit navigatorViewRequired(false, transform());
     }
 
-    m_longImageMode = false;
     m_enableFitInView = true;
     m_firstUserMediaLoaded = true;
 }
@@ -350,11 +315,6 @@ void GraphicsView::setEnableAutoFitInView(bool enable)
     m_enableFitInView = enable;
 }
 
-void GraphicsView::setLongImageMode(bool enable)
-{
-    m_longImageMode = enable;
-}
-
 bool GraphicsView::avoidResetTransform() const
 {
     return m_avoidResetTransform;
@@ -427,12 +387,7 @@ void GraphicsView::wheelEvent(QWheelEvent *event)
 
 void GraphicsView::resizeEvent(QResizeEvent *event)
 {
-    if (m_longImageMode) {
-        // In long image mode, reapply long image logic on resize
-        // We directly apply the long image mode logic without rechecking
-        // if we should enter long image mode, as the mode is already active
-        fitLongImage();
-    } else if (m_enableFitInView) {
+    if (m_enableFitInView) {
         bool originalSizeSmallerThanWindow = isThingSmallerThanWindowWith(resetScale(transform()));
         if (originalSizeSmallerThanWindow && scaleFactor() >= 1) {
             // no longer need to do fitInView()