From f6857c6a31f40a49859972e483bfdec57cb8861b Mon Sep 17 00:00:00 2001
From: Jean-Baptiste Kempf <jb@videolan.org>
Date: Thu, 12 Apr 2007 16:24:49 +0000
Subject: [PATCH] Qt4 - MouseWheel support - patch by Sergey Volk.

---
 modules/gui/qt4/main_interface.cpp     | 15 +++++++++++++++
 modules/gui/qt4/main_interface.hpp     |  1 +
 modules/gui/qt4/util/customwidgets.cpp | 14 ++++++++++----
 modules/gui/qt4/util/customwidgets.hpp |  1 +
 4 files changed, 27 insertions(+), 4 deletions(-)

diff --git a/modules/gui/qt4/main_interface.cpp b/modules/gui/qt4/main_interface.cpp
index 143d221ca8..0d944690fa 100644
--- a/modules/gui/qt4/main_interface.cpp
+++ b/modules/gui/qt4/main_interface.cpp
@@ -551,6 +551,21 @@ void MainInterface::keyPressEvent( QKeyEvent *e )
         e->ignore();
 }
 
+void MainInterface::wheelEvent( QWheelEvent *e )
+{
+    int i_vlckey = 0;
+
+    if ( e->delta() > 0 )
+       i_vlckey = KEY_MOUSEWHEELUP;
+    else
+       i_vlckey = KEY_MOUSEWHEELDOWN;
+
+    /* Handle modifiers */
+    i_vlckey |= qtKeyModifiersToVLC( e );
+    var_SetInteger( p_intf->p_libvlc, "key-pressed", i_vlckey );
+    e->accept();
+}
+
 void MainInterface::stop()
 {
     playlist_Stop( THEPL );
diff --git a/modules/gui/qt4/main_interface.hpp b/modules/gui/qt4/main_interface.hpp
index c7da3cb48c..81e2e5bf5f 100644
--- a/modules/gui/qt4/main_interface.hpp
+++ b/modules/gui/qt4/main_interface.hpp
@@ -76,6 +76,7 @@ private:
     /* Video */
     VideoWidget         *videoWidget;
     virtual void keyPressEvent( QKeyEvent *);
+    virtual void wheelEvent( QWheelEvent * );
 
     bool embeddedPlaylistWasActive;
     bool videoIsActive;
diff --git a/modules/gui/qt4/util/customwidgets.cpp b/modules/gui/qt4/util/customwidgets.cpp
index 10c37c617a..cd30fb5474 100644
--- a/modules/gui/qt4/util/customwidgets.cpp
+++ b/modules/gui/qt4/util/customwidgets.cpp
@@ -97,15 +97,21 @@ void ClickLineEdit::focusOutEvent( QFocusEvent *ev )
 /***************************************************************************
  * Hotkeys converters
  ***************************************************************************/
+int qtKeyModifiersToVLC( QInputEvent* e )
+{
+    int i_keyModifiers = 0;
+    if( e->modifiers() & Qt::ShiftModifier ) i_keyModifiers |= KEY_MODIFIER_SHIFT;
+    if( e->modifiers() & Qt::AltModifier ) i_keyModifiers |= KEY_MODIFIER_ALT;
+    if( e->modifiers() & Qt::ControlModifier ) i_keyModifiers |= KEY_MODIFIER_CTRL;
+    if( e->modifiers() & Qt::MetaModifier ) i_keyModifiers |= KEY_MODIFIER_META;
+    return i_keyModifiers;
+}
 
 int qtEventToVLCKey( QKeyEvent *e )
 {
     int i_vlck = 0;
     /* Handle modifiers */
-    if( e->modifiers()& Qt::ShiftModifier ) i_vlck |= KEY_MODIFIER_SHIFT;
-    if( e->modifiers()& Qt::AltModifier ) i_vlck |= KEY_MODIFIER_ALT;
-    if( e->modifiers()& Qt::ControlModifier ) i_vlck |= KEY_MODIFIER_CTRL;
-    if( e->modifiers()& Qt::MetaModifier ) i_vlck |= KEY_MODIFIER_META;
+    i_vlck |= qtKeyModifiersToVLC( e );
 
     bool found = false;
     /* Look for some special keys */
diff --git a/modules/gui/qt4/util/customwidgets.hpp b/modules/gui/qt4/util/customwidgets.hpp
index 9a4d94b018..7c137edc96 100644
--- a/modules/gui/qt4/util/customwidgets.hpp
+++ b/modules/gui/qt4/util/customwidgets.hpp
@@ -88,5 +88,6 @@ signals:
 class QKeyEvent;
 int qtEventToVLCKey( QKeyEvent *e );
 QString VLCKeyToString( int val );
+int qtKeyModifiersToVLC( QInputEvent* e );
 
 #endif
-- 
2.39.2