From 10d53a3f0e09ec2ef437619bb1bb0dbb40f7ee8b Mon Sep 17 00:00:00 2001
From: Marc Mutz <marc.mutz@kdab.com>
Date: Wed, 8 Apr 2015 19:44:48 +0200
Subject: [PATCH] Add qHash(QKeySequence)

Key sequences can be compared for equality,
so qHash should be overloaded, too.

[ChangeLog][QtGui][QKeySequence] Added qHash(QKeySequence).

Change-Id: I3cf896292459897d66198d96dfcdba1a39bdafce
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
---
 src/gui/kernel/qkeysequence.cpp | 11 +++++++++++
 src/gui/kernel/qkeysequence.h   |  6 +++++-
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/src/gui/kernel/qkeysequence.cpp b/src/gui/kernel/qkeysequence.cpp
index 23d5f06aa2..ab846b63cb 100644
--- a/src/gui/kernel/qkeysequence.cpp
+++ b/src/gui/kernel/qkeysequence.cpp
@@ -39,6 +39,7 @@
 #ifndef QT_NO_SHORTCUT
 
 #include "qdebug.h"
+#include <QtCore/qhashfunctions.h>
 #ifndef QT_NO_REGEXP
 # include "qregexp.h"
 #endif
@@ -1409,6 +1410,16 @@ bool QKeySequence::operator==(const QKeySequence &other) const
             d->key[3] == other.d->key[3]);
 }
 
+/*!
+    \since 5.6
+
+    Calculates the hash value of \a key, using
+    \a seed to seed the calculation.
+*/
+uint qHash(const QKeySequence &key, uint seed) Q_DECL_NOTHROW
+{
+    return qHashRange(key.d->key, key.d->key + QKeySequencePrivate::MaxKeyCount, seed);
+}
 
 /*!
     Provides an arbitrary comparison of this key sequence and
diff --git a/src/gui/kernel/qkeysequence.h b/src/gui/kernel/qkeysequence.h
index cd7af5718f..e6616dae11 100644
--- a/src/gui/kernel/qkeysequence.h
+++ b/src/gui/kernel/qkeysequence.h
@@ -43,11 +43,12 @@ QT_BEGIN_NAMESPACE
 
 #ifndef QT_NO_SHORTCUT
 
+class QKeySequence;
+
 /*****************************************************************************
   QKeySequence stream functions
  *****************************************************************************/
 #ifndef QT_NO_DATASTREAM
-class QKeySequence;
 Q_GUI_EXPORT QDataStream &operator<<(QDataStream &in, const QKeySequence &ks);
 Q_GUI_EXPORT QDataStream &operator>>(QDataStream &out, QKeySequence &ks);
 #endif
@@ -59,6 +60,8 @@ void qt_set_sequence_auto_mnemonic(bool b);
 class QVariant;
 class QKeySequencePrivate;
 
+Q_GUI_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QKeySequence &key, uint seed = 0) Q_DECL_NOTHROW;
+
 class Q_GUI_EXPORT QKeySequence
 {
     Q_GADGET
@@ -204,6 +207,7 @@ private:
 
     friend Q_GUI_EXPORT QDataStream &operator<<(QDataStream &in, const QKeySequence &ks);
     friend Q_GUI_EXPORT QDataStream &operator>>(QDataStream &in, QKeySequence &ks);
+    friend Q_GUI_EXPORT uint qHash(const QKeySequence &key, uint seed) Q_DECL_NOTHROW;
     friend class QShortcutMap;
     friend class QShortcut;