QmlDesigner: Add blur render image

To give the impression that the content is non editable.

Change-Id: I1869d02a27b2d1a7c2c12abb9a8d8d24068adf22
Reviewed-by: Thomas Hartmann <Thomas.Hartmann@digia.com>

6 files changed, 48 insertions, 14 deletions

diff --git a/src/plugins/qmldesigner/components/formeditor/formeditoritem.cpp b/src/plugins/qmldesigner/components/formeditor/formeditoritem.cpp
index e515fff62c..08a6662162 100644
--- a/src/plugins/qmldesigner/components/formeditor/formeditoritem.cpp
+++ b/src/plugins/qmldesigner/components/formeditor/formeditoritem.cpp
@@ -55,6 +55,7 @@ FormEditorItem::FormEditorItem(const QmlItemNode &qmlItemNode, FormEditorScene*
     m_qmlItemNode(qmlItemNode),
     m_borderWidth(1.0),
     m_highlightBoundingRect(false),
+    m_blurContent(false),
     m_isContentVisible(true),
     m_isFormEditorVisible(true)
 {
@@ -118,6 +119,14 @@ void FormEditorItem::setHighlightBoundingRect(bool highlight)
     }
 }
 
+void FormEditorItem::blurContent(bool blurContent)
+{
+    if (m_blurContent != blurContent) {
+        m_blurContent = blurContent;
+        update();
+    }
+}
+
 void FormEditorItem::setContentVisible(bool visible)
 {
     if (visible == m_isContentVisible)
@@ -275,7 +284,10 @@ void FormEditorItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *,
         if (scene()->showBoundingRects() && m_boundingRect.width() > 15 && m_boundingRect.height() > 15)
             paintPlaceHolderForInvisbleItem(painter);
     } else {
-        qmlItemNode().paintInstance(painter);
+        if (m_blurContent)
+            painter->drawPixmap(boundingRect().topLeft(), qmlItemNode().instanceBlurredRenderPixmap());
+        else
+            painter->drawPixmap(boundingRect().topLeft(), qmlItemNode().instanceRenderPixmap());
     }
 
     if (!qmlItemNode().isRootModelNode())
diff --git a/src/plugins/qmldesigner/components/formeditor/formeditoritem.h b/src/plugins/qmldesigner/components/formeditor/formeditoritem.h
index 288b6a7695..746aef33ca 100644
--- a/src/plugins/qmldesigner/components/formeditor/formeditoritem.h
+++ b/src/plugins/qmldesigner/components/formeditor/formeditoritem.h
@@ -99,6 +99,7 @@ public:
     FormEditorView *formEditorView() const;
 
     void setHighlightBoundingRect(bool highlight);
+    void blurContent(bool blurContent);
 
     void setContentVisible(bool visible);
     bool isContentVisible() const;
@@ -124,6 +125,7 @@ private: // variables
     QRectF m_paintedBoundingRect;
     double m_borderWidth;
     bool m_highlightBoundingRect;
+    bool m_blurContent;
     bool m_isContentVisible;
     bool m_isFormEditorVisible;
 };
diff --git a/src/plugins/qmldesigner/designercore/include/nodeinstance.h b/src/plugins/qmldesigner/designercore/include/nodeinstance.h
index 2f21d5cd1e..d0a53513c6 100644
--- a/src/plugins/qmldesigner/designercore/include/nodeinstance.h
+++ b/src/plugins/qmldesigner/designercore/include/nodeinstance.h
@@ -73,7 +73,9 @@ public:
     QPointF position() const;
     QSizeF size() const;
     int penWidth() const;
-    void paint(QPainter *painter);
+
+    QPixmap renderPixmap() const;
+    QPixmap blurredRenderPixmap() const;
 
     QVariant property(const PropertyName &name) const;
     bool hasBindingForProperty(const PropertyName &name) const;
@@ -84,7 +86,6 @@ public:
     qint32 parentId() const;
     qint32 instanceId() const;
 
-    QPixmap renderPixmap() const;
 
 protected:
     void setProperty(const PropertyName &name, const QVariant &value);
diff --git a/src/plugins/qmldesigner/designercore/include/qmlitemnode.h b/src/plugins/qmldesigner/designercore/include/qmlitemnode.h
index 3580afbfbb..65ed735e99 100644
--- a/src/plugins/qmldesigner/designercore/include/qmlitemnode.h
+++ b/src/plugins/qmldesigner/designercore/include/qmlitemnode.h
@@ -102,7 +102,8 @@ public:
     int instancePenWidth() const;
     bool instanceIsRenderPixmapNull() const;
 
-    void paintInstance(QPainter *painter);
+    QPixmap instanceRenderPixmap() const;
+    QPixmap instanceBlurredRenderPixmap() const;
 
     TypeName simplifiedTypeName() const;
 
diff --git a/src/plugins/qmldesigner/designercore/instances/nodeinstance.cpp b/src/plugins/qmldesigner/designercore/instances/nodeinstance.cpp
index efc4ad080b..9ee8f86be4 100644
--- a/src/plugins/qmldesigner/designercore/instances/nodeinstance.cpp
+++ b/src/plugins/qmldesigner/designercore/instances/nodeinstance.cpp
@@ -34,6 +34,10 @@
 
 #include <QDebug>
 
+QT_BEGIN_NAMESPACE
+void qt_blurImage(QPainter *painter, QImage &blurImage, qreal radius, bool quality, bool alphaOnly, int transposed = 0);
+QT_END_NAMESPACE
+
 namespace QmlDesigner {
 
 class ProxyNodeInstanceData
@@ -75,6 +79,8 @@ public:
     QHash<PropertyName, TypeName> instanceTypes;
 
     QPixmap renderPixmap;
+    QPixmap blurredRenderPixmap;
+
     QHash<PropertyName, QPair<PropertyName, qint32> > anchors;
 };
 
@@ -256,12 +262,6 @@ int NodeInstance::penWidth() const
         return 1;
 }
 
-void NodeInstance::paint(QPainter *painter)
-{
-    if (isValid() && !d->renderPixmap.isNull())
-        painter->drawPixmap(boundingRect().topLeft(), d->renderPixmap);
-}
-
 QVariant NodeInstance::property(const PropertyName &name) const
 {
     if (isValid())
@@ -320,10 +320,24 @@ QPixmap NodeInstance::renderPixmap() const
     return d->renderPixmap;
 }
 
+QPixmap NodeInstance::blurredRenderPixmap() const
+{
+    if (d->blurredRenderPixmap.isNull()) {
+        d->blurredRenderPixmap = QPixmap(d->renderPixmap.size());
+        QPainter blurPainter(&d->blurredRenderPixmap);
+        QImage renderImage = d->renderPixmap.toImage();
+        qt_blurImage(&blurPainter, renderImage, 8.0, false, false);
+    }
+
+    return d->blurredRenderPixmap;
+}
+
 void NodeInstance::setRenderPixmap(const QImage &image)
 {
-    if (!image.isNull())
+    if (!image.isNull()) {
         d->renderPixmap = QPixmap::fromImage(image);
+        d->blurredRenderPixmap = QPixmap();
+    }
 }
 
 void NodeInstance::setParentId(qint32 instanceId)
diff --git a/src/plugins/qmldesigner/designercore/model/qmlitemnode.cpp b/src/plugins/qmldesigner/designercore/model/qmlitemnode.cpp
index 074d06768f..17da2a3bea 100644
--- a/src/plugins/qmldesigner/designercore/model/qmlitemnode.cpp
+++ b/src/plugins/qmldesigner/designercore/model/qmlitemnode.cpp
@@ -482,10 +482,14 @@ bool QmlItemNode::instanceIsRenderPixmapNull() const
     return nodeInstance().renderPixmap().isNull();
 }
 
-void QmlItemNode::paintInstance(QPainter *painter)
+QPixmap QmlItemNode::instanceRenderPixmap() const
 {
-    if (nodeInstance().isValid())
-        nodeInstance().paint(painter);
+    return nodeInstance().renderPixmap();
+}
+
+QPixmap QmlItemNode::instanceBlurredRenderPixmap() const
+{
+    return nodeInstance().blurredRenderPixmap();
 }
 
 QList<QmlModelState> QmlModelStateGroup::allStates() const