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Diffstat (limited to '')
-rw-r--r-- | src/display/canvas-temporary-item-list.cpp | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/src/display/canvas-temporary-item-list.cpp b/src/display/canvas-temporary-item-list.cpp new file mode 100644 index 0000000..caa9609 --- /dev/null +++ b/src/display/canvas-temporary-item-list.cpp @@ -0,0 +1,82 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Provides a class that can contain active TemporaryItem's on a desktop + * Code inspired by message-stack.cpp + * + * Authors: + * Johan Engelen + * + * Copyright (C) Johan Engelen 2008 <j.b.c.engelen@utwente.nl> + * + * Released under GNU GPL v2+, read the file 'COPYING' for more information. + */ + +#include "display/canvas-temporary-item.h" +#include "display/canvas-temporary-item-list.h" + +namespace Inkscape { +namespace Display { + +TemporaryItemList::TemporaryItemList(SPDesktop *desktop) + : desktop(desktop) +{ + +} + +TemporaryItemList::~TemporaryItemList() +{ + // delete all items in list so the timeouts are removed + for (auto tempitem : itemlist) { + delete tempitem; + } + itemlist.clear(); +} + +/* Note that TemporaryItem or TemporaryItemList is responsible for deletion and such, so this return pointer can safely be ignored. */ +TemporaryItem * +TemporaryItemList::add_item(SPCanvasItem *item, unsigned int lifetime) +{ + // beware of strange things happening due to very short timeouts + TemporaryItem * tempitem = new TemporaryItem(item, lifetime); + itemlist.push_back(tempitem); + tempitem->signal_timeout.connect( sigc::mem_fun(*this, &TemporaryItemList::_item_timeout) ); + return tempitem; +} + +void +TemporaryItemList::delete_item( TemporaryItem * tempitem ) +{ + // check if the item is in the list, if so, delete it. (in other words, don't wait for the item to delete itself) + bool in_list = false; + for (auto & it : itemlist) { + if ( it == tempitem ) { + in_list = true; + break; + } + } + if (in_list) { + itemlist.remove(tempitem); + delete tempitem; + } +} + +void +TemporaryItemList::_item_timeout(TemporaryItem * tempitem) +{ + itemlist.remove(tempitem); + // no need to delete the item, it does that itself after signal_timeout.emit() completes +} + +} //namespace Display +} /* namespace Inkscape */ + +/* + Local Variables: + mode:c++ + c-file-style:"stroustrup" + c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +)) + indent-tabs-mode:nil + fill-column:99 + End: +*/ +// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 : |