1 files changed, 51 insertions, 0 deletions
diff --git a/tests/ut_mscrollchain/scroller.cpp b/tests/ut_mscrollchain/scroller.cpp
new file mode 100644
index 00000000..6c1a398b
--- /dev/null
+++ b/tests/ut_mscrollchain/scroller.cpp
@@ -0,0 +1,51 @@
+#include "scroller.h"
+#include "scrollablewidget.h"
+
+QPoint Scroller::maximumOffset;
+
+Scroller::Scroller()
+{
+}
+
+Scroller::~Scroller()
+{
+}
+
+QPoint Scroller::queryScrollingAmount(const QGraphicsWidget *widget,
+                                      const QRect &targetRect,
+                                      const QPoint &originPoint,
+                                      const QPoint &currentOffset)
+{
+    const ScrollableWidget *scrollable = dynamic_cast<const ScrollableWidget *>(widget);
+    if (!scrollable) {
+        return QPoint();
+    }
+
+    const QRect boundaries(scrollable->boundingRect().toRect());
+
+    QRect movedTargetRect(targetRect);
+    moveRectInsideArea(boundaries, movedTargetRect);
+
+    const QPoint offset(movedTargetRect.topLeft() - originPoint);
+    const QPoint lowerBound(-maximumOffset - currentOffset);
+    const QPoint upperBound(maximumOffset - currentOffset);
+    const QPoint limitedOffset(qBound(lowerBound.x(), offset.x(), upperBound.x()),
+                               qBound(lowerBound.y(), offset.y(), upperBound.y()));
+    return limitedOffset;
+}
+
+void Scroller::applyScrolling(QGraphicsWidget *widget, const QPoint &contentsOffset)
+{
+    ScrollableWidget *scrollableWidget = dynamic_cast<ScrollableWidget *>(widget);
+    if (scrollableWidget) {
+        scrollableWidget->scrollContents(contentsOffset);
+    }
+}
+
+void Scroller::restoreScrolling(QGraphicsWidget *widget)
+{
+    ScrollableWidget *scrollableWidget = dynamic_cast<ScrollableWidget *>(widget);
+    if (scrollableWidget) {
+        scrollableWidget->clearScroll();
+    }
+}