diff options
Diffstat (limited to 'src/quick/items/qquickflickable.cpp')
| -rw-r--r-- | src/quick/items/qquickflickable.cpp | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/src/quick/items/qquickflickable.cpp b/src/quick/items/qquickflickable.cpp index e0f8b6de00..3662827973 100644 --- a/src/quick/items/qquickflickable.cpp +++ b/src/quick/items/qquickflickable.cpp @@ -734,7 +734,19 @@ QQuickFlickable::~QQuickFlickable() These properties hold the surface coordinate currently at the top-left corner of the Flickable. For example, if you flick an image up 100 pixels, - \c contentY will be 100. + \c contentY will increase by 100. + + \note If you flick back to the origin (the top-left corner), after the + rebound animation, \c contentX will settle to the same value as \c originX, + and \c contentY to \c originY. These are usually (0,0), however ListView + and GridView may have an arbitrary origin due to delegate size variation, + or item insertion/removal outside the visible region. So if you want to + implement something like a vertical scrollbar, one way is to use + \c {y: (contentY - originY) * (height / contentHeight)} + for the position; another way is to use the normalized values in + \l {QtQuick::Flickable::visibleArea}{visibleArea}. + + \sa originX, originY */ qreal QQuickFlickable::contentX() const { @@ -2153,6 +2165,8 @@ void QQuickFlickable::setRightMargin(qreal m) This is usually (0,0), however ListView and GridView may have an arbitrary origin due to delegate size variation, or item insertion/removal outside the visible region. + + \sa contentX, contentY */ qreal QQuickFlickable::originY() const |