From e89b4021ad8eaaa84a63209a0ea626a0203109af Mon Sep 17 00:00:00 2001
From: Peter Penz <peter.penz19@gmail.com>
Date: Thu, 17 Jan 2008 18:50:18 +0000
Subject: [PATCH] if the icons are aligned left to right, the vertical wheel
 event should be applied to the horizontal scrollbar

BUG: 153343

svn path=/trunk/KDE/kdebase/apps/; revision=762722
---
 src/dolphiniconsview.cpp | 20 ++++++++++++++++++++
 src/dolphiniconsview.h   |  1 +
 2 files changed, 21 insertions(+)

diff --git a/src/dolphiniconsview.cpp b/src/dolphiniconsview.cpp
index 553cdcfe6..21debe745 100644
--- a/src/dolphiniconsview.cpp
+++ b/src/dolphiniconsview.cpp
@@ -33,6 +33,7 @@
 #include <QApplication>
 #include <QPainter>
 #include <QPoint>
+#include <QScrollBar>
 
 DolphinIconsView::DolphinIconsView(QWidget* parent, DolphinController* controller) :
     KCategorizedView(parent),
@@ -285,6 +286,25 @@ void DolphinIconsView::keyPressEvent(QKeyEvent* event)
     }
 }
 
+void DolphinIconsView::wheelEvent(QWheelEvent* event)
+{
+    KCategorizedView::wheelEvent(event);
+
+    // if the icons are aligned left to right, the vertical wheel event should
+    // be applied to the horizontal scrollbar
+    const IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
+    const bool scrollHorizontal = (event->orientation() == Qt::Vertical) &&
+                                  (settings->arrangement() == QListView::LeftToRight);
+    if (scrollHorizontal) {
+        QWheelEvent horizEvent(event->pos(),
+                               event->delta(),
+                               event->buttons(),
+                               event->modifiers(),
+                               Qt::Horizontal);
+        QApplication::sendEvent(horizontalScrollBar(), &horizEvent);
+    }
+}
+
 void DolphinIconsView::triggerItem(const QModelIndex& index)
 {
     m_controller->triggerItem(itemForIndex(index));
diff --git a/src/dolphiniconsview.h b/src/dolphiniconsview.h
index 06c417868..edc2475d4 100644
--- a/src/dolphiniconsview.h
+++ b/src/dolphiniconsview.h
@@ -62,6 +62,7 @@ protected:
     virtual void dropEvent(QDropEvent* event);
     virtual void paintEvent(QPaintEvent* event);
     virtual void keyPressEvent(QKeyEvent* event);
+    virtual void wheelEvent(QWheelEvent* event);
 
 private slots:
     void triggerItem(const QModelIndex& index);
-- 
2.47.3