Based on the original LGPL 2.1 QtCurve code from Craig Drummond <craig.p.drummond@gmail.com> available at https://github.com/KDE/qtcurve Signed-off-by: TCH <tch@protonmail.com> Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>pull/4/head
TCH
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/*
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QtCurve (C) Craig Drummond, 2007 - 2010 craig.p.drummond@gmail.com
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----
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public
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License version 2 as published by the Free Software Foundation.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#include "shortcuthandler.h"
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#include <tqpopupmenu.h>
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#include <tqapplication.h>
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#include <tqobjectlist.h>
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#include <tqmainwindow.h>
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#include <tqdialog.h>
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#include <tqstyle.h>
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ShortcutHandler::ShortcutHandler(TQObject *parent)
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: TQObject(parent)
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, itsAltDown(false)
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{
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}
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ShortcutHandler::~ShortcutHandler()
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{
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}
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bool ShortcutHandler::hasSeenAlt(const TQWidget *widget) const
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{
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if(widget && !widget->isEnabled())
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return false;
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if(::tqqt_cast<const TQPopupMenu *>(widget))
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return itsOpenMenus.count() && itsOpenMenus.last()==widget;
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else
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return itsOpenMenus.isEmpty() && itsSeenAlt.contains((TQWidget *)(widget->topLevelWidget()));
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/* return false;
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{
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const TQWidget *w=widget;
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while(w)
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{
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if(itsSeenAlt.contains((TQWidget *)w))
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return true;
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w=w->parentWidget();
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}
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}
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if(itsHandlePopupsOnly)
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return false;
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widget = widget->topLevelWidget();
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return itsSeenAlt.contains((TQWidget *)widget);*/
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}
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bool ShortcutHandler::showShortcut(const TQWidget *widget) const
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{
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return itsAltDown && hasSeenAlt(widget);
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}
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void ShortcutHandler::widgetDestroyed(TQObject *o)
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{
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itsUpdated.remove(static_cast<TQWidget *>(o));
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itsOpenMenus.remove(static_cast<TQWidget *>(o));
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}
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void ShortcutHandler::updateWidget(TQWidget *w)
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{
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if(!itsUpdated.contains(w))
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{
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connect(w, SIGNAL(destroyed(TQObject *)), this, SLOT(widgetDestroyed(TQObject *)));
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itsUpdated.append(w);
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w->repaint(TRUE);
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}
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}
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void ShortcutHandler::setSeenAlt(TQWidget *w)
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{
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if(!itsSeenAlt.contains(w))
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itsSeenAlt.append(w);
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}
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bool ShortcutHandler::eventFilter(TQObject *o, TQEvent *e)
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{
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if (!o->isWidgetType())
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return TQObject::eventFilter(o, e);
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TQWidget *widget = ::tqqt_cast<TQWidget*>(o);
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switch(e->type())
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{
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case TQEvent::KeyPress:
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if (Key_Alt==((TQKeyEvent*)e)->key())
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{
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itsAltDown = true;
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if(::tqqt_cast<TQPopupMenu *>(widget))
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{
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setSeenAlt(widget);
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updateWidget(widget);
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if(widget->parentWidget() && widget->parentWidget()->topLevelWidget())
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itsSeenAlt.append(widget->parentWidget()->topLevelWidget());
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}
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else
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{
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widget = widget->topLevelWidget();
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setSeenAlt(widget);
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// Alt has been pressed - find all widgets that care
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TQObjectList *l = widget->queryList("TQWidget");
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TQObjectListIt it( *l );
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TQWidget *w;
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while ((w = (TQWidget *)it.current()) != 0)
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{
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++it;
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if (!(w->isTopLevel() || !w->isVisible())) // || w->style().styleHint(QStyle::SH_UnderlineAccelerator, w)))
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updateWidget(w);
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}
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delete l;
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}
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}
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break;
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case TQEvent::WindowDeactivate:
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case TQEvent::KeyRelease:
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if (TQEvent::WindowDeactivate==e->type() || Key_Alt==static_cast<TQKeyEvent*>(e)->key())
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{
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itsAltDown = false;
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TQValueList<TQWidget *>::const_iterator it(itsUpdated.begin()),
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end(itsUpdated.end());
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for (; it!=end; ++it)
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(*it)->repaint(TRUE);
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if(!itsUpdated.contains(widget))
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widget->repaint(TRUE);
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itsSeenAlt.clear();
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itsUpdated.clear();
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}
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break;
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case TQEvent::Show:
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if(::tqqt_cast<TQPopupMenu *>(widget))
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{
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TQWidget *prev=itsOpenMenus.count() ? itsOpenMenus.last() : 0L;
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itsOpenMenus.append(widget);
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if(itsAltDown && prev)
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prev->repaint(TRUE);
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connect(widget, SIGNAL(destroyed(TQObject *)), this, SLOT(widgetDestroyed(TQObject *)));
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}
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break;
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case TQEvent::Hide:
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if(::tqqt_cast<TQPopupMenu *>(widget))
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{
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itsSeenAlt.remove(widget);
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itsUpdated.remove(widget);
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itsOpenMenus.remove(widget);
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if(itsAltDown)
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{
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if(itsOpenMenus.count())
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itsOpenMenus.last()->repaint(TRUE);
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else if(widget->parentWidget() && widget->parentWidget()->topLevelWidget())
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widget->parentWidget()->topLevelWidget()->repaint(TRUE);
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}
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}
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break;
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case TQEvent::Close:
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// Reset widget when closing
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itsSeenAlt.remove(widget);
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itsUpdated.remove(widget);
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itsSeenAlt.remove(widget->topLevelWidget());
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itsOpenMenus.remove(widget);
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if(itsAltDown && itsOpenMenus.count())
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itsOpenMenus.last()->repaint(TRUE);
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break;
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break;
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default:
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break;
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}
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return TQObject::eventFilter(o, e);
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}
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#include "shortcuthandler.moc"
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@ -0,0 +1,62 @@
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#ifndef __SHORTCUT_HANDLER_H__
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#define __SHORTCUT_HANDLER_H__
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/*
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QtCurve (C) Craig Drummond, 2007 - 2010 craig.p.drummond@gmail.com
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----
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public
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License version 2 as published by the Free Software Foundation.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#include <tqobject.h>
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#include <tqvaluelist.h>
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#include <tqevent.h>
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class TQWidget;
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class ShortcutHandler : public TQObject
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{
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Q_OBJECT
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public:
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explicit ShortcutHandler(TQObject *parent = 0);
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virtual ~ShortcutHandler();
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bool hasSeenAlt(const TQWidget *widget) const;
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bool isAltDown() const { return itsAltDown; }
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bool showShortcut(const TQWidget *widget) const;
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private slots:
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void widgetDestroyed(TQObject *o);
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protected:
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void updateWidget(TQWidget *w);
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void setSeenAlt(TQWidget *w);
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bool eventFilter(TQObject *watched, TQEvent *event);
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private:
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bool itsAltDown;
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TQValueList<TQWidget *> itsSeenAlt,
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itsUpdated,
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itsOpenMenus;
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};
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#endif
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