Added support for printing custom items (taking a screenshot

qmlprinter.cpp

@@ -52,7 +52,18 @@ void QmlPrinter::paintItem(QQuickItem *item, QQuickWindow *window, QPainter *pai
     if(!item || !item->isVisible())
         return;
 
-    if(item->flags().testFlag(QQuickItem::ItemHasContents)) {
+    if(isCustomPrintItem(item->metaObject()->className())) {
+        painter->save();
+        if(item->clip()) {
+            painter->setClipping(true);
+            painter->setClipRect(item->clipRect());
+        }
+        const QRectF rect = item->mapRectToScene(item->boundingRect());
+
+        QImage image = window->grabWindow();
+        painter->drawImage(rect.x(), rect.y(), image, rect.x(), rect.y(), rect.width(), rect.height());
+        painter->restore();
+    } else if(item->flags().testFlag(QQuickItem::ItemHasContents)) {
         painter->save();
         if(item->clip()) {
             painter->setClipping(true);
@@ -77,7 +88,6 @@ void QmlPrinter::paintItem(QQuickItem *item, QQuickWindow *window, QPainter *pai
         }
         painter->restore();
     }
-
     const QObjectList children = item->children();
     foreach(QObject *obj, children) {
         paintItem(qobject_cast<QQuickItem*>(obj), window, painter);
@@ -293,3 +303,19 @@ bool QmlPrinter::inherits(const QMetaObject *metaObject, const QString &name)
     }
     return false;
 }
+
+void QmlPrinter::addPrintableItem(const QString &item)
+{
+    printableItems.push_back(item);
+}
+
+bool QmlPrinter::isCustomPrintItem(const QString &item)
+{
+    QListIterator<QString> it(printableItems);
+    while(it.hasNext()) {
+        QString printableItem = it.next();
+        if(item.contains(printableItem))
+            return true;
+    }
+    return false;
+}

qmlprinter.h

@@ -23,6 +23,8 @@ class QmlPrinter : public QObject
     Q_OBJECT
 private:
 
+    QList<QString> printableItems;
+
     void paintItem(QQuickItem *item, QQuickWindow *window, QPainter *painter);
     void paintQQuickRectangle(QQuickItem *item, QPainter *painter);
     void paintQQuickText(QQuickItem *item, QPainter *painter);
@@ -30,12 +32,14 @@ private:
     void paintQQuickCanvasItem(QQuickItem *item, QQuickWindow *window, QPainter *painter);
 
     bool inherits(const QMetaObject *metaObject, const QString &name);
+    bool isCustomPrintItem(const QString &item);
 public:
     explicit QmlPrinter(QObject *parent = 0);
     virtual ~QmlPrinter();
 
     void printPDF(const QString &location, QQuickItem *item, bool showPDF = false);
 
+    void addPrintableItem(const QString &item);
 signals:
 
 public slots: