// _SetDropIndex
void
DragSortableListView::_SetDropIndex(int32 index)
{
if (fDropIndex != index) {
fDropIndex = index;
if (fDropIndex >= 0) {
int32 count = CountItems();
if (fDropIndex == count) {
BRect r;
if (ItemAt(count - 1)) {
r = ItemFrame(count - 1);
r.top = r.bottom;
r.bottom = r.top + 1.0;
} else {
r = Bounds();
r.bottom--; // compensate for scrollbars moved slightly out of window
}
_SetDropAnticipationRect(r);
} else {
BRect r = ItemFrame(fDropIndex);
r.top--;
r.bottom = r.top + 1.0;
_SetDropAnticipationRect(r);
}
}
}
}
// SetDropTargetRect
void
DragSortableListView::SetDropTargetRect(const BMessage* message, BPoint where)
{
if (AcceptDragMessage(message)) {
bool copy = modifiers() & B_SHIFT_KEY;
bool replaceAll = !message->HasPointer("list") && !copy;
BRect r = Bounds();
if (replaceAll) {
r.bottom--; // compensate for scrollbar offset
_SetDropAnticipationRect(r);
fDropIndex = -1;
} else {
// offset where by half of item height
r = ItemFrame(0);
where.y += r.Height() / 2.0;
int32 index = IndexOf(where);
if (index < 0)
index = CountItems();
_SetDropIndex(index);
const uchar* cursorData = copy ? kCopyCursor : B_HAND_CURSOR;
BCursor cursor(cursorData);
SetViewCursor(&cursor, true);
}
}
}
/*****************************************************************************
* DragSortableListView::MouseUp
*****************************************************************************/
void
DragSortableListView::MouseUp( BPoint where )
{
// remove drop mark
_SetDropAnticipationRect( BRect( 0.0, 0.0, -1.0, -1.0 ) );
// be sure to forget drag message
fDragMessageCopy.what = 0;
BListView::MouseUp( where );
}
// MouseUp
void
DragSortableListView::MouseUp(BPoint where)
{
// remove drop mark
_SetDropAnticipationRect(BRect(0.0, 0.0, -1.0, -1.0));
SetAutoScrolling(false);
// be sure to forget drag message
_SetDragMessage(NULL);
BListView::MouseUp(where);
BCursor cursor(B_HAND_CURSOR);
SetViewCursor(&cursor, true);
}
/*****************************************************************************
* DragSortableListView::MouseMoved
*****************************************************************************/
void
DragSortableListView::MouseMoved(BPoint where, uint32 transit, const BMessage *msg)
{
if ( msg && ( msg->what == B_SIMPLE_DATA || msg->what == MSG_SOUNDPLAY ) )
{
bool replaceAll = !msg->HasPointer("list") && !(modifiers() & B_SHIFT_KEY);
switch ( transit )
{
case B_ENTERED_VIEW:
// remember drag message
// this is needed to react on modifier changes
fDragMessageCopy = *msg;
case B_INSIDE_VIEW:
{
if ( replaceAll )
{
BRect r( Bounds() );
r.bottom--; // compensate for scrollbar offset
_SetDropAnticipationRect( r );
fDropIndex = -1;
}
else
{
// offset where by half of item height
BRect r( ItemFrame( 0 ) );
where.y += r.Height() / 2.0;
int32 index = IndexOf( where );
if ( index < 0 )
index = CountItems();
_SetDropIndex( index );
}
break;
}
case B_EXITED_VIEW:
// forget drag message
fDragMessageCopy.what = 0;
case B_OUTSIDE_VIEW:
_RemoveDropAnticipationRect();
break;
}
}
else
{
_RemoveDropAnticipationRect();
BListView::MouseMoved(where, transit, msg);
fDragMessageCopy.what = 0;
}
}
// _RemoveDropAnticipationRect
void
DragSortableListView::_RemoveDropAnticipationRect()
{
_SetDropAnticipationRect(BRect(0.0, 0.0, -1.0, -1.0));
// _SetDropIndex(-1);
}
