Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdebase@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 511 insertions, 0 deletions

diff --git a/kicker/applets/menu/menuapplet.cpp b/kicker/applets/menu/menuapplet.cpp
new file mode 100644
index 000000000..ae10614c6
--- /dev/null
+++ b/kicker/applets/menu/menuapplet.cpp
@@ -0,0 +1,511 @@
+/*****************************************************************
+
+Copyright (c) 2002 Siegfried Nijssen <snijssen@liacs.nl>
+Copyright (c) 2003 Lubos Lunak <l.lunak@suse.cz>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************/
+
+#define _MENUAPPLET_CPP_
+
+#include "menuapplet.h"
+
+#include <qlayout.h>
+#include <qtooltip.h>
+#include <qvariant.h> // avoid X11 #define's
+
+#include <kapplication.h>
+#include <kconfig.h>
+#include <kdebug.h>
+#include <kglobal.h>
+#include <klocale.h>
+#include <kwin.h>
+#include <kwinmodule.h>
+
+#include <netwm.h>
+
+#include <X11/Xlib.h>
+
+/*
+
+ KMenuBar from KDE3.1 and older won't work very well with this applet.
+ This is because QMenuBar tries really hard to keep its preffered size,
+ se even if the X window for the menubar has the size enforced by this
+ applet, Qt thinks it has the size Qt wants. This results in parts
+ of the menubar not being repainted. Also, old KMenuBar always forced
+ with to be the width of the screen, so even if the menubar has only
+ few entries, this applet will still indicate the menubar doesn't
+ fit completely in it. There's no way to fix this, besides upgrading
+ to KDE3.2.
+
+*/
+
+
+extern Time qt_x_time;
+
+extern "C"
+{
+    KDE_EXPORT KPanelApplet* init( QWidget* parent_P, const QString& configFile_P )
+    {
+      KGlobal::locale()->insertCatalogue("kmenuapplet");
+      return new KickerMenuApplet::Applet( configFile_P, parent_P );
+    }
+}
+
+namespace KickerMenuApplet
+{
+
+static const int MOVE_DIFF = 100; // size increment for left/right menu moving
+static const int GROW_WIDTH = 10; // width of grow buttons
+
+const long SUPPORTED_WINDOW_TYPES = NET::NormalMask | NET::DesktopMask | NET::DockMask
+                | NET::ToolbarMask | NET::MenuMask | NET::DialogMask | NET::OverrideMask
+                | NET::TopMenuMask | NET::UtilityMask | NET::SplashMask;
+
+Applet::Applet( const QString& configFile_P, QWidget* parent_P )
+    :   KPanelApplet( configFile_P, Normal, 0, parent_P, "menuapplet" ),
+        DCOPObject( "menuapplet" ),
+        module( NULL ),
+	active_menu( NULL ),
+        selection( NULL ),
+        selection_watcher( NULL ),
+        desktop_menu( false ),
+        topEdgeOffset( 0 )
+    {
+    setBackgroundOrigin(AncestorOrigin);
+    dcopclient.registerAs( "menuapplet", false );
+    // toolbarAppearanceChanged(int) is sent when changing macstyle
+    connect( kapp, SIGNAL( toolbarAppearanceChanged( int )),
+        this, SLOT( readSettings()));
+    claimSelection();
+    readSettings();
+    updateTopEdgeOffset();
+    }
+
+Applet::~Applet()
+    {
+    lostSelection(); // release all menu's before really loosing the selection
+    delete selection;
+    delete selection_watcher;
+    delete module;
+    KGlobal::locale()->removeCatalogue("kmenuapplet");
+    }
+
+void Applet::windowAdded( WId w_P )
+    {
+    NETWinInfo info( qt_xdisplay(), w_P, qt_xrootwin(), NET::WMWindowType );
+    if( info.windowType( SUPPORTED_WINDOW_TYPES ) != NET::TopMenu )
+	return;
+//    kdDebug() << "embedding:" << w_P << endl;
+    Window transient_for = KWin::transientFor( w_P );
+    if( transient_for == None )
+	return;
+    MenuEmbed* embed;
+    if( transient_for == qt_xrootwin())
+    {
+        embed = new MenuEmbed( transient_for, true, this );
+    }
+    else
+        {
+        KWin::WindowInfo info2 = KWin::windowInfo( transient_for, NET::WMWindowType );
+        embed = new MenuEmbed( transient_for,
+            info2.windowType( SUPPORTED_WINDOW_TYPES ) == NET::Desktop, this );
+        }
+        embed->hide();
+    embed->move( 0, -topEdgeOffset );
+    embed->resize( embed->width(), height() + topEdgeOffset );
+    embed->embed( w_P );
+    if( embed->embeddedWinId() == None )
+	{
+	delete embed;
+	return;
+	}
+    menus.append( embed );
+    // in case the app mapped its menu after its mainwindow, check which menu should be shown
+    activeWindowChanged( module->activeWindow());
+    }
+
+// - if the active window has its topmenu -> show the menu
+// - if desktop menu is enabled (i.e. explicitly in kdesktop) :
+//   - show it
+//   - otherwise show nothing
+void Applet::activeWindowChanged( WId w_P )
+    {
+//    kdDebug() << "active:" << w_P << endl;
+    for( WId window = w_P;
+	 window != None;
+	 window = tryTransientFor( window ))
+	{
+	for( QValueList< MenuEmbed* >::ConstIterator it = menus.begin();
+	     it != menus.end();
+	     ++it )
+	    {
+	    if( window == (*it)->mainWindow())
+                {
+                activateMenu( *it );
+	        return;
+		}
+	    }
+	}
+//    kdDebug() << "no active" << endl;
+    // No menu for active window found - if desktop menu
+    // (in kdesktoprc) is enabled, use kdesktop's menu instead of none.
+    bool try_desktop = desktop_menu;
+    if( !try_desktop && w_P != None )
+        { // also use the desktop menu if the active window is desktop
+        KWin::WindowInfo info = KWin::windowInfo( w_P, NET::WMWindowType );
+        if( info.windowType( SUPPORTED_WINDOW_TYPES ) == NET::Desktop )
+            try_desktop = true;
+        }
+    if( try_desktop )
+        {
+	for( QValueList< MenuEmbed* >::ConstIterator it = menus.begin();
+	     it != menus.end();
+	     ++it )
+	    {
+            if( (*it)->isDesktopMenu())
+                {
+                activateMenu( *it );
+                return;
+                }
+            }
+        }
+    activateMenu( NULL );
+    }
+
+void Applet::activateMenu( MenuEmbed* embed_P )
+    {
+    if( embed_P != active_menu )
+	{
+//        kdDebug() << "activate:" << embed_P << endl;
+	if( active_menu != NULL )
+	    active_menu->hide();
+	active_menu = embed_P;
+    if( active_menu != NULL )
+    {
+	    active_menu->show();
+        //if (embed->isDesktopMenu())
+        {
+            active_menu->setMinimumSize( width(), height() + topEdgeOffset );
+        }
+    }
+    emit updateLayout();
+    }
+    
+    setBackground();
+    }
+
+void Applet::updateMenuGeometry( MenuEmbed* embed )
+    {
+    if( embed == active_menu )
+        emit updateLayout();
+    }
+
+// If there's no menu for the window, try finding menu for its mainwindow
+// (where the window's WM_TRANSIENT_FOR property points).
+// If the window is modal (_NET_WM_STATE_MODAL), stop.
+WId Applet::tryTransientFor( WId w_P )
+    {
+    KWin::WindowInfo info = KWin::windowInfo( w_P, NET::WMState );
+    if( info.state() & NET::Modal )
+	return None;
+    WId ret = KWin::transientFor( w_P );
+    if( ret == qt_xrootwin())
+        ret = None;
+    return ret;
+    }
+
+void Applet::menuLost( MenuEmbed* embed )
+    {
+    for( QValueList< MenuEmbed* >::Iterator it = menus.begin();
+	 it != menus.end();
+	 ++it )
+	{
+	if( *it == embed )
+	    {
+	    menus.remove( it );
+	    embed->deleteLater();
+//	    kdDebug() << "deleting:" << (*it)->mainWindow() << endl;
+	    if( embed == active_menu )
+		{
+		active_menu = NULL;
+		// trigger selecting new active menu
+		activeWindowChanged( module->activeWindow());
+		}
+	    return;
+	    }
+	}
+    }
+
+void Applet::positionChange( Position )
+    {
+    updateTopEdgeOffset();
+    }
+
+// Detect mouse movement at the top screen edge also if the menubar
+// has a popup open - in such case, Qt has a grab, and this avoids
+// Kicker's FittsLawFrame. Therefore move the menubar a bit higher,
+// so that it actually is positioned exactly at the screen edge
+// (i.e. at a negative y coordinate within this applet, due to
+// Kicker's frame).
+void Applet::updateTopEdgeOffset()
+    {
+    QPoint p = topLevelWidget()->mapToGlobal( QPoint( 0, 0 ));
+    if( p.y() <= 2 ) // 2 = work also when running in appletproxy
+        topEdgeOffset = mapToGlobal( QPoint( 0, 0 )).y() - p.y();
+    else
+        topEdgeOffset = 0;
+    if( active_menu != NULL )
+        active_menu->move( active_menu->x(), -topEdgeOffset );
+    }
+
+void Applet::paletteChange(const QPalette & /* oldPalette */)
+{
+    setBackground();
+}
+
+void Applet::moveEvent( QMoveEvent* )
+{
+    setBackground();
+}
+
+void Applet::setBackground()
+{
+    if (active_menu)
+        active_menu->setBackground();
+}
+
+void Applet::claimSelection()
+    {
+    assert( selection == NULL );
+    selection = new KSelectionOwner( makeSelectionAtom(), DefaultScreen( qt_xdisplay()));
+// force taking the selection, but don't kill previous owner
+    if( selection->claim( true, false ))
+	{
+        delete selection_watcher;
+        selection_watcher = NULL;
+        connect( selection, SIGNAL( lostOwnership()), SLOT( lostSelection()));
+        module = new KWinModule;
+	connect( module, SIGNAL( windowAdded( WId )), this, SLOT( windowAdded( WId )));
+	connect( module, SIGNAL( activeWindowChanged( WId )),
+	    this, SLOT( activeWindowChanged( WId )));
+	QValueList< WId > windows = module->windows();
+	for( QValueList< WId >::ConstIterator it = windows.begin();
+	     it != windows.end();
+	     ++it )
+	    windowAdded( *it );
+	activeWindowChanged( module->activeWindow());
+	}
+    else
+        lostSelection();
+    }
+
+void Applet::lostSelection()
+    {
+    if( selection == NULL )
+        return;
+//    kdDebug() << "lost selection" << endl;
+    for( QValueList< MenuEmbed* >::ConstIterator it = menus.begin();
+	 it != menus.end();
+	 ++it )
+	delete (*it); // delete all MenuEmbed's = release all menus
+    menus.clear();
+    active_menu = NULL;
+    if( selection_watcher == NULL )
+        {
+        selection_watcher = new KSelectionWatcher( makeSelectionAtom(), DefaultScreen( qt_xdisplay()));
+        connect( selection_watcher, SIGNAL( lostOwner()), this, SLOT( claimSelection()));
+        }
+    delete module;
+    module = NULL;
+    selection->deleteLater();
+    selection = NULL;
+    // selection_watcher stays
+    }
+
+void Applet::readSettings()
+    {
+    KConfig cfg( "kdesktoprc", true );
+    cfg.setGroup( "Menubar" );
+    desktop_menu = cfg.readBoolEntry( "ShowMenubar", false );
+    cfg.setGroup( "KDE" );
+    if( cfg.readBoolEntry( "macStyle", false ) || desktop_menu )
+        QToolTip::remove( this );
+    else
+        QToolTip::add( this, i18n(
+            "You do not appear to have enabled the standalone menubar; "
+            "enable it in the Behavior control module for desktop." ));
+    if( !isDisabled() && active_menu == NULL )
+        activeWindowChanged( module->activeWindow()); //enforce desktop_menu
+    }
+
+void Applet::configure()
+    {
+    readSettings();
+    }
+
+int Applet::widthForHeight( int ) const
+    {
+    if (active_menu)
+        return active_menu->width();
+    return 0; // we're stretch applet
+    }
+
+int Applet::heightForWidth( int ) const
+    {
+    // *shrug* running this applet in vertical mode is a bad idea anyway
+    return 50;
+    }
+
+static Atom selection_atom = None;
+static Atom msg_type_atom = None;
+
+static
+void initAtoms()
+    {
+    char nm[ 100 ];
+    sprintf( nm, "_KDE_TOPMENU_OWNER_S%d", DefaultScreen( qt_xdisplay()));
+    char nm2[] = "_KDE_TOPMENU_MINSIZE";
+    char* names[ 2 ] = { nm, nm2 };
+    Atom atoms[ 2 ];
+    XInternAtoms( qt_xdisplay(), names, 2, False, atoms );
+    selection_atom = atoms[ 0 ];
+    msg_type_atom = atoms[ 1 ];
+    }
+
+Atom Applet::makeSelectionAtom()
+    {
+    if( selection_atom == None )
+	initAtoms();
+    return selection_atom;
+    }
+
+MenuEmbed::MenuEmbed( WId mainwindow_P, bool desktop_P,
+    QWidget* parent_P, const char* name_P )
+    :   QXEmbed( parent_P, name_P ),
+	main_window( mainwindow_P ),
+        desktop( desktop_P )
+    {
+    setAutoDelete( false );
+    }
+
+void MenuEmbed::windowChanged( WId w_P )
+    {
+    if( w_P == None )
+	static_cast< Applet* >( parent())->menuLost( this );
+    }
+
+bool MenuEmbed::x11Event( XEvent* ev_P )
+    {
+    if( ev_P->type == ConfigureRequest
+	&& ev_P->xconfigurerequest.window == embeddedWinId()
+        && ev_P->xconfigurerequest.value_mask & ( CWWidth | CWHeight ))
+        {
+	XConfigureRequestEvent& ev = ev_P->xconfigurerequest;
+        QSize new_size = size();
+        if( ev.value_mask & CWWidth )
+            new_size.setWidth( ev.width );
+        if( ev.value_mask & CWHeight )
+            new_size.setHeight( ev.height );
+	// resize when the embedded window resizes (still obey min size)
+//	kdDebug() << "RES:" << embeddedWinId() << ":" << ev.width << ":" << ev.height << endl;
+	if( ev.width != width() || ev.height != height())
+            {
+            resize( ev.width, ev.height );
+            static_cast< Applet* >( parent())->updateMenuGeometry( this );
+            }
+	sendSyntheticConfigureNotifyEvent();
+//        int x, y;
+//        unsigned int w, h, d, b;
+//        Window root;
+//        XGetGeometry( qt_xdisplay(), embeddedWinId(), &root, &x, &y, &w, &h, &b, &d );
+//        kdDebug() << "RES3:" << width() << ":" << height() << ":" << w << ":" << h << endl;
+	return true;
+	}
+    return QXEmbed::x11Event( ev_P );
+    }
+
+void MenuEmbed::sendSyntheticConfigureNotifyEvent()
+{
+    QPoint globalPos = mapToGlobal(QPoint(0,0));
+    if (embeddedWinId()) {
+        XConfigureEvent c;
+        memset(&c, 0, sizeof(c));
+        c.type = ConfigureNotify;
+        c.display = qt_xdisplay();
+        c.send_event = True;
+        c.event = embeddedWinId();
+        c.window = winId();
+        c.x = globalPos.x();
+        c.y = globalPos.y();
+        c.width = width();
+        c.height = height();
+        c.border_width = 0;
+        c.above = None;
+        c.override_redirect = 0;
+        XSendEvent(qt_xdisplay(), c.event, true, StructureNotifyMask, (XEvent*)&c);
+    }
+}
+
+void MenuEmbed::setMinimumSize( int w, int h )
+{
+    QXEmbed::setMinimumSize( w, h );
+    // tell the menubar also the allowed minimum size
+    // the applet won't allow resizing to smaller size
+    if( embeddedWinId() != None )
+        {
+//        kdDebug() << "RES2:" << width() << ":" << height() << ":" << minimumWidth() << ":" << minimumHeight() << endl;
+        XEvent ev;
+        ev.xclient.display = qt_xdisplay();
+        ev.xclient.type = ClientMessage;
+        ev.xclient.window = embeddedWinId();
+        assert( msg_type_atom != None );
+        ev.xclient.message_type = msg_type_atom;
+        ev.xclient.format = 32;
+        ev.xclient.data.l[0] = qt_x_time;
+        ev.xclient.data.l[1] = minimumWidth();
+        ev.xclient.data.l[2] = minimumHeight();
+        ev.xclient.data.l[3] = 0;
+        ev.xclient.data.l[4] = 0;
+        XSendEvent( qt_xdisplay(), embeddedWinId(), False, NoEventMask, &ev );
+        }
+}
+
+void MenuEmbed::setBackground()
+{
+    const QPixmap *pbg = parentWidget()->backgroundPixmap();
+    
+    if (pbg)
+    {
+        QPixmap bg(width(), height());
+        bg.fill(parentWidget(), pos());
+        setPaletteBackgroundPixmap(bg);
+        setBackgroundOrigin(WidgetOrigin);
+    }
+    else
+        unsetPalette();
+    
+    hide();
+    show();
+    //XClearArea(x11Display(), embeddedWinId(), 0, 0, 0, 0, True);
+}
+
+} // namespace
+
+#include "menuapplet.moc"