From 3a345056c734f0d475b3ecd9959b9ae83ae70acc Mon Sep 17 00:00:00 2001
From: Frederik Gladhorn <frederik.gladhorn@nokia.com>
Date: Sat, 23 Jun 2012 11:29:59 +0200
Subject: [PATCH] Add mouse cursor shapes to MouseArea

This adds a new property that uses the enum
from the Qt namespace to allow setting of
custom cursor shapes for mouse areas.

Change-Id: I4d1ac6339b69dc9ea7855a8b8b6aa9276c71a90d
Reviewed-by: Jeremy Katz <jeremy.katz@nokia.com>
---
 src/quick/items/qquickmousearea.cpp   | 78 +++++++++++++++++++++++++++++++++++
 src/quick/items/qquickmousearea_p.h   | 11 +++++
 src/quick/items/qquickmousearea_p_p.h |  3 ++
 3 files changed, 92 insertions(+)

diff --git a/src/quick/items/qquickmousearea.cpp b/src/quick/items/qquickmousearea.cpp
index bf949e8..17458ab 100644
--- a/src/quick/items/qquickmousearea.cpp
+++ b/src/quick/items/qquickmousearea.cpp
@@ -197,6 +197,9 @@ QQuickMouseAreaPrivate::QQuickMouseAreaPrivate()
 #ifndef QT_NO_DRAGANDDROP
   , drag(0)
 #endif
+#ifndef QT_NO_CURSOR
+  , cursor(0)
+#endif
 {
 }
 
@@ -205,6 +208,9 @@ QQuickMouseAreaPrivate::~QQuickMouseAreaPrivate()
 #ifndef QT_NO_DRAGANDDROP
     delete drag;
 #endif
+#ifndef QT_NO_CURSOR
+    delete cursor;
+#endif
 }
 
 void QQuickMouseAreaPrivate::init()
@@ -1119,8 +1125,18 @@ void QQuickMouseArea::setHovered(bool h)
         d->hovered = h;
         emit hoveredChanged();
         d->hovered ? emit entered() : emit exited();
+#ifndef QT_NO_CURSOR
+        if (d->cursor) {
+            if (d->hovered) {
+                canvas()->setCursor(QCursor(*d->cursor));
+            } else {
+                canvas()->unsetCursor();
+            }
+        }
+#endif
     }
 }
+
 /*!
     \qmlproperty QtQuick2::Qt::MouseButtons MouseArea::acceptedButtons
     This property holds the mouse buttons that the mouse area reacts to.
@@ -1192,6 +1208,68 @@ bool QQuickMouseArea::setPressed(bool p)
     return false;
 }
 
+
+/*!
+    \qmlproperty QtQuick2::Qt::CursorShape MouseArea::cursorShape
+    This property holds the cursor shape for this mouse area.
+    Note that on platforms that do not display a mouse cursor this may have
+    no effect.
+
+    The available cursor shapes are:
+    \list
+    \li Qt.ArrowCursor
+    \li Qt.UpArrowCursor
+    \li Qt.CrossCursor
+    \li Qt.WaitCursor
+    \li Qt.IBeamCursor
+    \li Qt.SizeVerCursor
+    \li Qt.SizeHorCursor
+    \li Qt.SizeBDiagCursor
+    \li Qt.SizeFDiagCursor
+    \li Qt.SizeAllCursor
+    \li Qt.BlankCursor
+    \li Qt.SplitVCursor
+    \li Qt.SplitHCursor
+    \li Qt.PointingHandCursor
+    \li Qt.ForbiddenCursor
+    \li Qt.WhatsThisCursor
+    \li Qt.BusyCursor
+    \li Qt.OpenHandCursor
+    \li Qt.ClosedHandCursor
+    \li Qt.DragCopyCursor
+    \li Qt.DragMoveCursor
+    \li Qt.DragLinkCursor
+    \endlist
+
+    In order to only set a mouse cursor shape for a region without reacting
+    to mouse events set the acceptedButtons to none:
+
+    \code
+    MouseArea { cursorShape: Qt.IBeamCursor; acceptedButtons: Qt.NoButton }
+    \endcode
+
+    The default value is \c Qt.ArrowCursor.
+    \sa Qt::CursorShape
+*/
+
+#ifndef QT_NO_CURSOR
+Qt::CursorShape QQuickMouseArea::cursorShape() const
+{
+    Q_D(const QQuickMouseArea);
+    if (d->cursor)
+        return d->cursor->shape();
+    return Qt::ArrowCursor;
+}
+
+void QQuickMouseArea::setCursorShape(Qt::CursorShape shape)
+{
+    Q_D(QQuickMouseArea);
+    setHoverEnabled(true);
+    delete d->cursor;
+    d->cursor = new QCursor(shape);
+}
+#endif
+
 /*!
     \qmlproperty Item QtQuick2::MouseArea::drag.target
     \qmlproperty bool QtQuick2::MouseArea::drag.active
diff --git a/src/quick/items/qquickmousearea_p.h b/src/quick/items/qquickmousearea_p.h
index aee7809..14b74f4 100644
--- a/src/quick/items/qquickmousearea_p.h
+++ b/src/quick/items/qquickmousearea_p.h
@@ -143,6 +143,9 @@ class Q_QUICK_PRIVATE_EXPORT QQuickMouseArea : public QQuickItem
 #endif
     Q_PROPERTY(bool preventStealing READ preventStealing WRITE setPreventStealing NOTIFY preventStealingChanged)
     Q_PROPERTY(bool propagateComposedEvents READ propagateComposedEvents WRITE setPropagateComposedEvents NOTIFY propagateComposedEventsChanged)
+#ifndef QT_NO_CURSOR
+    Q_PROPERTY(Qt::CursorShape cursorShape READ cursorShape WRITE setCursorShape NOTIFY cursorShapeChanged)
+#endif
 
 public:
     QQuickMouseArea(QQuickItem *parent=0);
@@ -175,12 +178,20 @@ public:
     bool propagateComposedEvents() const;
     void setPropagateComposedEvents(bool propagate);
 
+#ifndef QT_NO_CURSOR
+    Qt::CursorShape cursorShape() const;
+    void setCursorShape(Qt::CursorShape shape);
+#endif
+
 Q_SIGNALS:
     void hoveredChanged();
     void pressedChanged();
     void enabledChanged();
     void acceptedButtonsChanged();
     void hoverEnabledChanged();
+#ifndef QT_NO_CURSOR
+    void cursorShapeChanged();
+#endif
     void positionChanged(QQuickMouseEvent *mouse);
     void mouseXChanged(QQuickMouseEvent *mouse);
     void mouseYChanged(QQuickMouseEvent *mouse);
diff --git a/src/quick/items/qquickmousearea_p_p.h b/src/quick/items/qquickmousearea_p_p.h
index 4e4b9a8..39a0616 100644
--- a/src/quick/items/qquickmousearea_p_p.h
+++ b/src/quick/items/qquickmousearea_p_p.h
@@ -107,6 +107,9 @@ public:
     Qt::MouseButtons lastButtons;
     Qt::KeyboardModifiers lastModifiers;
     QBasicTimer pressAndHoldTimer;
+#ifndef QT_NO_CURSOR
+    QCursor *cursor;
+#endif
 };
 
 QT_END_NAMESPACE
-- 
2.7.4