Added QGraphicsBloomEffect::blurHint.

This allows the user to control whether to use a fast dynamic blur or
a static high quality blur.

Reviewed-by: Samuel

2 files changed, 38 insertions, 0 deletions

diff --git a/src/gui/effects/qgraphicseffect.cpp b/src/gui/effects/qgraphicseffect.cpp
index 5fc61d7..4a59301 100644
--- a/src/gui/effects/qgraphicseffect.cpp
+++ b/src/gui/effects/qgraphicseffect.cpp
@@ -1363,6 +1363,40 @@ void QGraphicsBloomEffect::setBlurRadius(int radius)
 }
 
 /*!
+    \property QGraphicsBloomEffect::blurHint
+    \brief the blur hint of the effect.
+
+    Use the Qt::PerformanceHint hint to say that you want a faster blur,
+    and the Qt::QualityHint hint to say that you prefer a higher quality blur.
+
+    When animating the blur radius it's recommended to use Qt::PerformanceHint.
+
+    By default, the blur hint is Qt::PerformanceHint.
+*/
+Qt::RenderHint QGraphicsBloomEffect::blurHint() const
+{
+    Q_D(const QGraphicsBloomEffect);
+    return d->blurFilter.blurHint();
+}
+
+void QGraphicsBloomEffect::setBlurHint(Qt::RenderHint hint)
+{
+    Q_D(QGraphicsBloomEffect);
+    if (d->blurFilter.blurHint() == hint)
+        return;
+
+    d->blurFilter.setBlurHint(hint);
+    emit blurHintChanged(hint);
+}
+
+/*!
+    \fn void QGraphicsBloomEffect::blurHintChanged(Qt::RenderHint hint)
+
+    This signal is emitted whenever the effect's blur hint changes.
+    The \a hint parameter holds the effect's new blur hint.
+*/
+
+/*!
     \property QGraphicsBloomEffect::brightness
     \brief the brightness of the glow.
 
diff --git a/src/gui/effects/qgraphicseffect.h b/src/gui/effects/qgraphicseffect.h
index a92ce13..c5d3ede 100644
--- a/src/gui/effects/qgraphicseffect.h
+++ b/src/gui/effects/qgraphicseffect.h
@@ -339,6 +339,7 @@ class Q_GUI_EXPORT QGraphicsBloomEffect: public QGraphicsEffect
 {
     Q_OBJECT
     Q_PROPERTY(int blurRadius READ blurRadius WRITE setBlurRadius NOTIFY blurRadiusChanged)
+    Q_PROPERTY(Qt::RenderHint blurHint READ blurHint WRITE setBlurHint NOTIFY blurHintChanged)
     Q_PROPERTY(int brightness READ brightness WRITE setBrightness NOTIFY brightnessChanged)
     Q_PROPERTY(qreal strength READ strength WRITE setStrength NOTIFY strengthChanged)
 public:
@@ -347,16 +348,19 @@ public:
 
     QRectF boundingRectFor(const QRectF &rect) const;
     int blurRadius() const;
+    Qt::RenderHint blurHint() const;
     int brightness() const;
     qreal strength() const;
 
 public Q_SLOTS:
     void setBlurRadius(int blurRadius);
+    void setBlurHint(Qt::RenderHint hint);
     void setBrightness(int brightness);
     void setStrength(qreal strength);
 
 Q_SIGNALS:
     void blurRadiusChanged(int blurRadius);
+    void blurHintChanged(Qt::RenderHint hint);
     void brightnessChanged(int brightness);
     void strengthChanged(qreal strength);