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/*
QtCurve (C) Craig Drummond, 2007 - 2010 craig.p.drummond@gmail.com
----
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public
License version 2 as published by the Free Software Foundation.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; see the file COPYING. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "shortcuthandler.h"
#include <tqpopupmenu.h>
#include <tqapplication.h>
#include <tqobjectlist.h>
#include <tqmainwindow.h>
#include <tqdialog.h>
#include <tqstyle.h>
ShortcutHandler::ShortcutHandler(TQObject *parent)
: TQObject(parent)
, itsAltDown(false)
{
}
ShortcutHandler::~ShortcutHandler()
{
}
bool ShortcutHandler::hasSeenAlt(const TQWidget *widget) const
{
if(widget && !widget->isEnabled())
return false;
if(::tqt_cast<const TQPopupMenu *>(widget))
return itsOpenMenus.count() && itsOpenMenus.last()==widget;
else
return itsOpenMenus.isEmpty() && itsSeenAlt.contains((TQWidget *)(widget->topLevelWidget()));
/* return false;
{
const TQWidget *w=widget;
while(w)
{
if(itsSeenAlt.contains((TQWidget *)w))
return true;
w=w->parentWidget();
}
}
if(itsHandlePopupsOnly)
return false;
widget = widget->topLevelWidget();
return itsSeenAlt.contains((TQWidget *)widget);*/
}
bool ShortcutHandler::showShortcut(const TQWidget *widget) const
{
return itsAltDown && hasSeenAlt(widget);
}
void ShortcutHandler::widgetDestroyed(TQObject *o)
{
itsUpdated.remove(static_cast<TQWidget *>(o));
itsOpenMenus.remove(static_cast<TQWidget *>(o));
}
void ShortcutHandler::updateWidget(TQWidget *w)
{
if(!itsUpdated.contains(w))
{
connect(w, SIGNAL(destroyed(TQObject *)), this, SLOT(widgetDestroyed(TQObject *)));
itsUpdated.append(w);
w->repaint(TRUE);
}
}
void ShortcutHandler::setSeenAlt(TQWidget *w)
{
if(!itsSeenAlt.contains(w))
itsSeenAlt.append(w);
}
bool ShortcutHandler::eventFilter(TQObject *o, TQEvent *e)
{
if (!o->isWidgetType())
return TQObject::eventFilter(o, e);
TQWidget *widget = ::tqt_cast<TQWidget*>(o);
switch(e->type())
{
case TQEvent::KeyPress:
if (Key_Alt==((TQKeyEvent*)e)->key())
{
itsAltDown = true;
if(::tqt_cast<TQPopupMenu *>(widget))
{
setSeenAlt(widget);
updateWidget(widget);
if(widget->parentWidget() && widget->parentWidget()->topLevelWidget())
itsSeenAlt.append(widget->parentWidget()->topLevelWidget());
}
else
{
widget = widget->topLevelWidget();
setSeenAlt(widget);
// Alt has been pressed - find all widgets that care
TQObjectList *l = widget->queryList("TQWidget");
TQObjectListIt it( *l );
TQWidget *w;
while ((w = (TQWidget *)it.current()) != 0)
{
++it;
if (!(w->isTopLevel() || !w->isVisible())) // || w->style().styleHint(QStyle::SH_UnderlineAccelerator, w)))
updateWidget(w);
}
delete l;
}
}
break;
case TQEvent::WindowDeactivate:
case TQEvent::KeyRelease:
if (TQEvent::WindowDeactivate==e->type() || Key_Alt==static_cast<TQKeyEvent*>(e)->key())
{
itsAltDown = false;
TQValueList<TQWidget *>::const_iterator it(itsUpdated.begin()),
end(itsUpdated.end());
for (; it!=end; ++it)
(*it)->repaint(TRUE);
if(!itsUpdated.contains(widget))
widget->repaint(TRUE);
itsSeenAlt.clear();
itsUpdated.clear();
}
break;
case TQEvent::Show:
if(::tqt_cast<TQPopupMenu *>(widget))
{
TQWidget *prev=itsOpenMenus.count() ? itsOpenMenus.last() : 0L;
itsOpenMenus.append(widget);
if(itsAltDown && prev)
prev->repaint(TRUE);
connect(widget, SIGNAL(destroyed(TQObject *)), this, SLOT(widgetDestroyed(TQObject *)));
}
break;
case TQEvent::Hide:
if(::tqt_cast<TQPopupMenu *>(widget))
{
itsSeenAlt.remove(widget);
itsUpdated.remove(widget);
itsOpenMenus.remove(widget);
if(itsAltDown)
{
if(itsOpenMenus.count())
itsOpenMenus.last()->repaint(TRUE);
else if(widget->parentWidget() && widget->parentWidget()->topLevelWidget())
widget->parentWidget()->topLevelWidget()->repaint(TRUE);
}
}
break;
case TQEvent::Close:
// Reset widget when closing
itsSeenAlt.remove(widget);
itsUpdated.remove(widget);
itsSeenAlt.remove(widget->topLevelWidget());
itsOpenMenus.remove(widget);
if(itsAltDown && itsOpenMenus.count())
itsOpenMenus.last()->repaint(TRUE);
break;
break;
default:
break;
}
return TQObject::eventFilter(o, e);
}
#include "shortcuthandler.moc"
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