BOOL LLScrollableContainerView::needsToScroll(S32 x, S32 y, LLScrollableContainerView::SCROLL_ORIENTATION axis) const
{
if(mScrollbar[axis]->getVisible())
{
LLRect inner_rect_local( 0, mInnerRect.getHeight(), mInnerRect.getWidth(), 0 );
const S32 AUTOSCROLL_SIZE = 10;
if(mScrollbar[axis]->getVisible())
{
inner_rect_local.mRight -= SCROLLBAR_SIZE;
inner_rect_local.mTop += AUTOSCROLL_SIZE;
inner_rect_local.mBottom = inner_rect_local.mTop - AUTOSCROLL_SIZE;
}
if( inner_rect_local.pointInRect( x, y ) && (mScrollbar[axis]->getDocPos() > 0) )
{
return TRUE;
}
}
return FALSE;
}
bool LLScrollContainer::autoScroll(S32 x, S32 y)
{
static LLUICachedControl<S32> scrollbar_size ("UIScrollbarSize", 0);
bool scrolling = false;
if( mScrollbar[HORIZONTAL]->getVisible() || mScrollbar[VERTICAL]->getVisible() )
{
LLRect screen_local_extents;
screenRectToLocal(getRootView()->getLocalRect(), &screen_local_extents);
LLRect inner_rect_local( 0, mInnerRect.getHeight(), mInnerRect.getWidth(), 0 );
if( mScrollbar[HORIZONTAL]->getVisible() )
{
inner_rect_local.mBottom += scrollbar_size;
}
if( mScrollbar[VERTICAL]->getVisible() )
{
inner_rect_local.mRight -= scrollbar_size;
}
// clip rect against root view
inner_rect_local.intersectWith(screen_local_extents);
S32 auto_scroll_speed = llround(mAutoScrollRate * LLFrameTimer::getFrameDeltaTimeF32());
// autoscroll region should take up no more than one third of visible scroller area
S32 auto_scroll_region_width = llmin(inner_rect_local.getWidth() / 3, 10);
S32 auto_scroll_region_height = llmin(inner_rect_local.getHeight() / 3, 10);
if( mScrollbar[HORIZONTAL]->getVisible() )
{
LLRect left_scroll_rect = screen_local_extents;
left_scroll_rect.mRight = inner_rect_local.mLeft + auto_scroll_region_width;
if( left_scroll_rect.pointInRect( x, y ) && (mScrollbar[HORIZONTAL]->getDocPos() > 0) )
{
mScrollbar[HORIZONTAL]->setDocPos( mScrollbar[HORIZONTAL]->getDocPos() - auto_scroll_speed );
mAutoScrolling = TRUE;
scrolling = true;
}
LLRect right_scroll_rect = screen_local_extents;
right_scroll_rect.mLeft = inner_rect_local.mRight - auto_scroll_region_width;
if( right_scroll_rect.pointInRect( x, y ) && (mScrollbar[HORIZONTAL]->getDocPos() < mScrollbar[HORIZONTAL]->getDocPosMax()) )
{
mScrollbar[HORIZONTAL]->setDocPos( mScrollbar[HORIZONTAL]->getDocPos() + auto_scroll_speed );
mAutoScrolling = TRUE;
scrolling = true;
}
}
if( mScrollbar[VERTICAL]->getVisible() )
{
LLRect bottom_scroll_rect = screen_local_extents;
bottom_scroll_rect.mTop = inner_rect_local.mBottom + auto_scroll_region_height;
if( bottom_scroll_rect.pointInRect( x, y ) && (mScrollbar[VERTICAL]->getDocPos() < mScrollbar[VERTICAL]->getDocPosMax()) )
{
mScrollbar[VERTICAL]->setDocPos( mScrollbar[VERTICAL]->getDocPos() + auto_scroll_speed );
mAutoScrolling = TRUE;
scrolling = true;
}
LLRect top_scroll_rect = screen_local_extents;
top_scroll_rect.mBottom = inner_rect_local.mTop - auto_scroll_region_height;
if( top_scroll_rect.pointInRect( x, y ) && (mScrollbar[VERTICAL]->getDocPos() > 0) )
{
mScrollbar[VERTICAL]->setDocPos( mScrollbar[VERTICAL]->getDocPos() - auto_scroll_speed );
mAutoScrolling = TRUE;
scrolling = true;
}
}
}
return scrolling;
}
BOOL LLScrollableContainerView::handleDragAndDrop(S32 x, S32 y, MASK mask,
BOOL drop,
EDragAndDropType cargo_type,
void* cargo_data,
EAcceptance* accept,
std::string& tooltip_msg)
{
// Scroll folder view if needed. Never accepts a drag or drop.
*accept = ACCEPT_NO;
BOOL handled = FALSE;
if( mScrollbar[HORIZONTAL]->getVisible() || mScrollbar[VERTICAL]->getVisible() )
{
const S32 AUTOSCROLL_SIZE = 10;
S32 auto_scroll_speed = llround(mAutoScrollRate * LLFrameTimer::getFrameDeltaTimeF32());
LLRect inner_rect_local( 0, mInnerRect.getHeight(), mInnerRect.getWidth(), 0 );
if( mScrollbar[HORIZONTAL]->getVisible() )
{
inner_rect_local.mBottom += SCROLLBAR_SIZE;
}
if( mScrollbar[VERTICAL]->getVisible() )
{
inner_rect_local.mRight -= SCROLLBAR_SIZE;
}
if( mScrollbar[HORIZONTAL]->getVisible() )
{
LLRect left_scroll_rect = inner_rect_local;
left_scroll_rect.mRight = AUTOSCROLL_SIZE;
if( left_scroll_rect.pointInRect( x, y ) && (mScrollbar[HORIZONTAL]->getDocPos() > 0) )
{
mScrollbar[HORIZONTAL]->setDocPos( mScrollbar[HORIZONTAL]->getDocPos() - auto_scroll_speed );
mAutoScrolling = TRUE;
handled = TRUE;
}
LLRect right_scroll_rect = inner_rect_local;
right_scroll_rect.mLeft = inner_rect_local.mRight - AUTOSCROLL_SIZE;
if( right_scroll_rect.pointInRect( x, y ) && (mScrollbar[HORIZONTAL]->getDocPos() < mScrollbar[HORIZONTAL]->getDocPosMax()) )
{
mScrollbar[HORIZONTAL]->setDocPos( mScrollbar[HORIZONTAL]->getDocPos() + auto_scroll_speed );
mAutoScrolling = TRUE;
handled = TRUE;
}
}
if( mScrollbar[VERTICAL]->getVisible() )
{
LLRect bottom_scroll_rect = inner_rect_local;
bottom_scroll_rect.mTop = AUTOSCROLL_SIZE + bottom_scroll_rect.mBottom;
if( bottom_scroll_rect.pointInRect( x, y ) && (mScrollbar[VERTICAL]->getDocPos() < mScrollbar[VERTICAL]->getDocPosMax()) )
{
mScrollbar[VERTICAL]->setDocPos( mScrollbar[VERTICAL]->getDocPos() + auto_scroll_speed );
mAutoScrolling = TRUE;
handled = TRUE;
}
LLRect top_scroll_rect = inner_rect_local;
top_scroll_rect.mBottom = inner_rect_local.mTop - AUTOSCROLL_SIZE;
if( top_scroll_rect.pointInRect( x, y ) && (mScrollbar[VERTICAL]->getDocPos() > 0) )
{
mScrollbar[VERTICAL]->setDocPos( mScrollbar[VERTICAL]->getDocPos() - auto_scroll_speed );
mAutoScrolling = TRUE;
handled = TRUE;
}
}
}
if( !handled )
{
handled = childrenHandleDragAndDrop(x, y, mask, drop, cargo_type,
cargo_data, accept, tooltip_msg) != NULL;
}
return TRUE;
}
