kcmenumngr.cpp Source File (kdeui Library)

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# kcmenumngr.cpp

    00001 /*
    00002  *  This file is part of the KDE Libraries
    00003  *  Copyright (C) 1999 Matthias Ettrich <ettrich@kde.org>
    00004  *
    00005  *  This library is free software; you can redistribute it and/or
    00006  *  modify it under the terms of the GNU Library General Public
    00007  *  License as published by the Free Software Foundation; either
    00008  *  version 2 of the License, or (at your option) any later version.
    00009  *
    00010  *  This library is distributed in the hope that it will be useful,
    00011  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
    00012  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    00013  *  Library General Public License for more details.
    00014  *
    00015  *  You should have received a copy of the GNU Library General Public License
    00016  *  along with this library; see the file COPYING.LIB.  If not, write to
    00017  *  the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    00018  *  Boston, MA 02111-1307, USA.
    00019  *
    00020  */
    00021 #include <qwidget.h>
    00022 #include <qpopupmenu.h>
    00023 #include "kcmenumngr.h"
    00024 #include "kglobal.h"
    00025 #include "kconfig.h"
    00026 #include "kshortcut.h"
    00027
    00028 #undef KeyPress
    00029 #undef None
    00030
    00031 template class QPtrDict<QPopupMenu>;
    00032
    00033 KContextMenuManager* KContextMenuManager::manager = 0;
    00034
    00035 KContextMenuManager::KContextMenuManager( QObject* parent, const char* name )
    00036     : QObject( parent, name)
    00037 {
    00038     KConfigGroupSaver saver ( KGlobal::config(), QString::fromLatin1("Shortcuts") ) ;
    00039     menuKey = KShortcut( saver.config()->readEntry(QString::fromLatin1("PopupContextMenu"), QString::fromLatin1("Menu") ) ).keyCodeQt();
    00040     saver.config()->setGroup( QString::fromLatin1("ContextMenus") ) ;
    00041     showOnPress = saver.config()->readBoolEntry(QString::fromLatin1("ShowOnPress"), TRUE );
    00042 }
    00043
    00044 KContextMenuManager::~KContextMenuManager()
    00045 {
    00046 }
    00047
    00048
    00049 bool KContextMenuManager::showOnButtonPress( void )
    00050 {
    00051   if ( !manager )
    00052         manager = new KContextMenuManager;
    00053   return( manager->showOnPress );
    00054 }
    00055
    00056
    00057 void KContextMenuManager::insert( QWidget* widget, QPopupMenu* popup )
    00058 {
    00059     if ( !manager )
    00060         manager = new KContextMenuManager;
    00061
    00062     manager->connect( widget, SIGNAL( destroyed() ), manager, SLOT( widgetDestroyed() ) );
    00063     manager->menus.insert( widget, popup );
    00064     widget->installEventFilter( manager );
    00065 }
    00066
    00067 bool KContextMenuManager::eventFilter( QObject *o, QEvent * e)
    00068 {
    00069     QPopupMenu* popup = 0;
    00070     QPoint pos;
    00071     switch ( e->type() ) {
    00072     case QEvent::MouseButtonPress:
    00073         if (((QMouseEvent*) e )->button() != RightButton )
    00074             break;
    00075         if ( !showOnPress )
    00076             return TRUE; // eat event for safety
    00077         popup = menus[o];
    00078         pos = ((QMouseEvent*) e )->globalPos();
    00079         break;
    00080     case QEvent::MouseButtonRelease:
    00081         if ( showOnPress  || ((QMouseEvent*) e )->button() != RightButton )
    00082             break;
    00083         popup = menus[o];
    00084         pos = ((QMouseEvent*) e )->globalPos();
    00085         break;
    00086     case QEvent::KeyPress:
    00087         {
    00088             if ( !o->isWidgetType() )
    00089                 break;
    00090             QKeyEvent *k = (QKeyEvent *)e;
    00091             int key = k->key();
    00092             if ( k->state() & ShiftButton )
    00093                 key |= SHIFT;
    00094             if ( k->state() & ControlButton )
    00095                 key |= CTRL;
    00096             if ( k->state() & AltButton )
    00097                 key |= ALT;
    00098             if ( key != menuKey )
    00099                 break;
    00100             popup = menus[o];
    00101             if ( popup ) {
    00102                 QWidget* w = (QWidget*) o ;
    00103
    00104                 // ### workaround
    00105                 pos = w->mapToGlobal( w->rect().center() );
    00106                 // with later Qt snapshot
    00107                 // pos = w->mapToGlobal( w->microFocusHint().center() );
    00108             }
    00109         }
    00110         break;
    00111     default:
    00112         break;
    00113     }
    00114
    00115     if ( popup ) {
    00116         popup->popup( pos );
    00117         return TRUE;
    00118     }
    00119
    00120     return FALSE;
    00121 }
    00122
    00123 void KContextMenuManager::widgetDestroyed()
    00124 {
    00125     if ( menus.find( (QObject*)sender() ) )
    00126         menus.remove( (QObject*)sender() );
    00127 }
    00128
    00129 #include "kcmenumngr.moc"

This file is part of the documentation for kdelibs Version 3.1.5.
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