Update in reaction to GradientStops changing.

2 files changed, 29 insertions, 2 deletions

diff --git a/src/declarative/fx/qfxrect.cpp b/src/declarative/fx/qfxrect.cpp
index b10594e..9718344 100644
--- a/src/declarative/fx/qfxrect.cpp
+++ b/src/declarative/fx/qfxrect.cpp
@@ -133,6 +133,12 @@ void QFxPen::setWidth(int w)
     Sets a \e color at a \e position in a gradient.
 */
 
+void QFxGradientStop::updateGradient()
+{
+    if (QFxGradient *grad = qobject_cast<QFxGradient*>(parent()))
+        grad->doUpdate();
+}
+
 /*!
     \qmlclass Gradient QFxGradient
     \brief The Gradient item defines a gradient fill.
@@ -171,6 +177,13 @@ const QGradient *QFxGradient::gradient() const
     return m_gradient;
 }
 
+void QFxGradient::doUpdate()
+{
+    delete m_gradient;
+    m_gradient = 0;
+    emit updated();
+}
+
 QML_DEFINE_TYPE(QFxRect,Rect)
 
 /*!
@@ -310,7 +323,11 @@ void QFxRect::setGradient(QFxGradient *gradient)
     Q_D(QFxRect);
     if (d->gradient == gradient)
         return;
+    if (d->gradient)
+        disconnect(d->gradient, SIGNAL(updated()), this, SLOT(doUpdate()));
     d->gradient = gradient;
+    if (d->gradient)
+        connect(d->gradient, SIGNAL(updated()), this, SLOT(doUpdate()));
     update();
 }
 
diff --git a/src/declarative/fx/qfxrect.h b/src/declarative/fx/qfxrect.h
index 864b1cd..c279a1c 100644
--- a/src/declarative/fx/qfxrect.h
+++ b/src/declarative/fx/qfxrect.h
@@ -90,10 +90,13 @@ public:
     QFxGradientStop(QObject *parent=0) : QObject(parent) {}
 
     qreal position() const { return m_position; }
-    void setPosition(qreal position) { m_position = position; }
+    void setPosition(qreal position) { m_position = position; updateGradient(); }
 
     QColor color() const { return m_color; }
-    void setColor(const QColor &color) { m_color = color; }
+    void setColor(const QColor &color) { m_color = color; updateGradient(); }
+
+private:
+    void updateGradient();
 
 private:
     qreal m_position;
@@ -116,9 +119,16 @@ public:
 
     const QGradient *gradient() const;
 
+Q_SIGNALS:
+    void updated();
+
+private:
+    void doUpdate();
+
 private:
     QList<QFxGradientStop *> m_stops;
     mutable QGradient *m_gradient;
+    friend class QFxGradientStop;
 };
 QML_DECLARE_TYPE(QFxGradient)