int ScrollbarGroup::scrollSize(WebCore::ScrollbarOrientation orientation) const
{
WebPluginScrollbarImpl* webScrollbar = orientation == HorizontalScrollbar ? m_horizontalScrollbar : m_verticalScrollbar;
if (!webScrollbar)
return 0;
Scrollbar* scrollbar = webScrollbar->scrollbar();
return scrollbar->totalSize() - scrollbar->visibleSize();
}
bool ScrollableArea::scroll(ScrollDirection direction, ScrollGranularity granularity, float multiplier)
{
ScrollbarOrientation orientation;
Scrollbar* scrollbar;
if (direction == ScrollUp || direction == ScrollDown) {
orientation = VerticalScrollbar;
scrollbar = verticalScrollbar();
} else {
orientation = HorizontalScrollbar;
scrollbar = horizontalScrollbar();
}
if (!scrollbar)
return false;
float step = 0;
switch (granularity) {
case ScrollByLine:
step = scrollbar->lineStep();
break;
case ScrollByPage:
step = scrollbar->pageStep();
break;
case ScrollByDocument:
step = scrollbar->totalSize();
break;
case ScrollByPixel:
case ScrollByPrecisePixel:
step = scrollbar->pixelStep();
break;
case ScrollByPixelVelocity:
break;
}
if (granularity != ScrollByPixelVelocity && (direction == ScrollUp || direction == ScrollLeft))
multiplier = -multiplier;
return scrollAnimator()->scroll(orientation, granularity, step, multiplier);
}
int ScrollView::scrollSize(ScrollbarOrientation orientation) const
{
Scrollbar* scrollbar = ((orientation == HorizontalScrollbar) ? m_horizontalScrollbar : m_verticalScrollbar).get();
return scrollbar ? (scrollbar->totalSize() - scrollbar->visibleSize()) : 0;
}