ardour/livetrax
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only queue an item redraw from Item::show() or Item::Hide() if the call changes the visibility status of the item (i.e. make no-ops really be no-ops)

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This commit is contained in:
Paul Davis 2014-03-04 10:04:21 -05:00
parent 836e95d964
commit dde4d3bbc3
1 changed files with 8 additions and 4 deletions
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12
libs/canvas/item.cc
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@ -240,15 +240,19 @@ Item::lower_to_bottom ()
void void
Item::hide () Item::hide ()
{ {
_visible = false; if (_visible) {
_canvas->item_shown_or_hidden (this); _visible = false;
_canvas->item_shown_or_hidden (this);
}
} }
void void
Item::show () Item::show ()
{ {
_visible = true; if (!_visible) {
_canvas->item_shown_or_hidden (this); _visible = true;
_canvas->item_shown_or_hidden (this);
}
} }
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