events.cpp

00001 /*****************************************************************
00002  KWin - the KDE window manager
00003  This file is part of the KDE project.
00004 
00005 Copyright (C) 1999, 2000 Matthias Ettrich <ettrich@kde.org>
00006 Copyright (C) 2003 Lubos Lunak <l.lunak@kde.org>
00007 
00008 You can Freely distribute this program under the GNU General Public
00009 License. See the file "COPYING" for the exact licensing terms.
00010 ******************************************************************/
00011 
00012 /*
00013 
00014  This file contains things relevant to handling incoming events.
00015 
00016 */
00017 
00018 #include "client.h"
00019 #include "workspace.h"
00020 #include "atoms.h"
00021 #include "tabbox.h"
00022 #include "group.h"
00023 #include "rules.h"
00024 
00025 #include <qwhatsthis.h>
00026 #include <kkeynative.h>
00027 #include <qapplication.h>
00028 
00029 #include <X11/extensions/shape.h>
00030 #include <X11/Xatom.h>
00031 
00032 extern Time qt_x_time;
00033 extern Atom qt_window_role;
00034 
00035 namespace KWinInternal
00036 {
00037 
00038 // ****************************************
00039 // WinInfo
00040 // ****************************************
00041 
00042 WinInfo::WinInfo( Client * c, Display * display, Window window,
00043     Window rwin, const unsigned long pr[], int pr_size )
00044     : NETWinInfo( display, window, rwin, pr, pr_size, NET::WindowManager ), m_client( c )
00045     {
00046     }
00047 
00048 void WinInfo::changeDesktop(int desktop)
00049     {
00050     m_client->workspace()->sendClientToDesktop( m_client, desktop, true );
00051     }
00052 
00053 void WinInfo::changeState( unsigned long state, unsigned long mask )
00054     {
00055     mask &= ~NET::Sticky; // KWin doesn't support large desktops, ignore
00056     mask &= ~NET::Hidden; // clients are not allowed to change this directly
00057     state &= mask; // for safety, clear all other bits
00058 
00059     if(( mask & NET::FullScreen ) != 0 && ( state & NET::FullScreen ) == 0 )
00060         m_client->setFullScreen( false, false );
00061     if ( (mask & NET::Max) == NET::Max )
00062         m_client->setMaximize( state & NET::MaxVert, state & NET::MaxHoriz );
00063     else if ( mask & NET::MaxVert )
00064         m_client->setMaximize( state & NET::MaxVert, m_client->maximizeMode() & Client::MaximizeHorizontal );
00065     else if ( mask & NET::MaxHoriz )
00066         m_client->setMaximize( m_client->maximizeMode() & Client::MaximizeVertical, state & NET::MaxHoriz );
00067 
00068     if ( mask & NET::Shaded )
00069         m_client->setShade( state & NET::Shaded ? ShadeNormal : ShadeNone );
00070     if ( mask & NET::KeepAbove)
00071         m_client->setKeepAbove( (state & NET::KeepAbove) != 0 );
00072     if ( mask & NET::KeepBelow)
00073         m_client->setKeepBelow( (state & NET::KeepBelow) != 0 );
00074     if( mask & NET::SkipTaskbar )
00075         m_client->setSkipTaskbar( ( state & NET::SkipTaskbar ) != 0, true );
00076     if( mask & NET::SkipPager )
00077         m_client->setSkipPager( ( state & NET::SkipPager ) != 0 );
00078     if( mask & NET::DemandsAttention )
00079         m_client->demandAttention(( state & NET::DemandsAttention ) != 0 );
00080     if( mask & NET::Modal )
00081         m_client->setModal( ( state & NET::Modal ) != 0 );
00082     // unsetting fullscreen first, setting it last (because e.g. maximize works only for !isFullScreen() )
00083     if(( mask & NET::FullScreen ) != 0 && ( state & NET::FullScreen ) != 0 )
00084         m_client->setFullScreen( true, false );
00085     }
00086 
00087 
00088 // ****************************************
00089 // RootInfo
00090 // ****************************************
00091 
00092 RootInfo::RootInfo( Workspace* ws, Display *dpy, Window w, const char *name, unsigned long pr[], int pr_num, int scr )
00093     : NETRootInfo4( dpy, w, name, pr, pr_num, scr )
00094     {
00095     workspace = ws;
00096     }
00097 
00098 void RootInfo::changeNumberOfDesktops(int n)
00099     {
00100     workspace->setNumberOfDesktops( n );
00101     }
00102 
00103 void RootInfo::changeCurrentDesktop(int d)
00104     {
00105     workspace->setCurrentDesktop( d );
00106     }
00107 
00108 void RootInfo::changeActiveWindow( Window w, NET::RequestSource src, Time timestamp, Window active_window )
00109     {
00110     if( Client* c = workspace->findClient( WindowMatchPredicate( w )))
00111         {
00112         if( timestamp == CurrentTime )
00113             timestamp = c->userTime();
00114         if( src != NET::FromApplication && src != FromTool )
00115             src = NET::FromTool;
00116         if( src == NET::FromTool )
00117             workspace->activateClient( c, true ); // force
00118         else // NET::FromApplication
00119             {
00120             Client* c2;
00121             if( workspace->allowClientActivation( c, timestamp ))
00122                 workspace->activateClient( c );
00123             // if activation of the requestor's window would be allowed, allow activation too
00124             else if( active_window != None
00125                 && ( c2 = workspace->findClient( WindowMatchPredicate( active_window ))) != NULL
00126                 && workspace->allowClientActivation( c2,
00127                     timestampCompare( timestamp, c2->userTime() > 0 ? timestamp : c2->userTime())))
00128                 workspace->activateClient( c );
00129             else
00130                 c->demandAttention();
00131             }
00132         }
00133     }
00134 
00135 void RootInfo::restackWindow( Window w, RequestSource src, Window above, int detail, Time timestamp )
00136     {
00137     if( Client* c = workspace->findClient( WindowMatchPredicate( w )))
00138         {
00139         if( timestamp == CurrentTime )
00140             timestamp = c->userTime();
00141         if( src != NET::FromApplication && src != FromTool )
00142             src = NET::FromTool;
00143         c->restackWindow( above, detail, src, timestamp, true );
00144         }
00145     }
00146 
00147 void RootInfo::gotTakeActivity( Window w, Time timestamp, long flags )
00148     {
00149     if( Client* c = workspace->findClient( WindowMatchPredicate( w )))
00150         workspace->handleTakeActivity( c, timestamp, flags );
00151     }
00152 
00153 void RootInfo::closeWindow(Window w)
00154     {
00155     Client* c = workspace->findClient( WindowMatchPredicate( w ));
00156     if ( c )
00157         c->closeWindow();
00158     }
00159 
00160 void RootInfo::moveResize(Window w, int x_root, int y_root, unsigned long direction)
00161     {
00162     Client* c = workspace->findClient( WindowMatchPredicate( w ));
00163     if ( c )
00164         {
00165         updateXTime(); // otherwise grabbing may have old timestamp - this message should include timestamp
00166         c->NETMoveResize( x_root, y_root, (Direction)direction);
00167         }
00168     }
00169 
00170 void RootInfo::moveResizeWindow(Window w, int flags, int x, int y, int width, int height )
00171     {
00172     Client* c = workspace->findClient( WindowMatchPredicate( w ));
00173     if ( c )
00174         c->NETMoveResizeWindow( flags, x, y, width, height );
00175     }
00176 
00177 void RootInfo::gotPing( Window w, Time timestamp )
00178     {
00179     if( Client* c = workspace->findClient( WindowMatchPredicate( w )))
00180         c->gotPing( timestamp );
00181     }
00182 
00183 void RootInfo::changeShowingDesktop( bool showing )
00184     {
00185     workspace->setShowingDesktop( showing );
00186     }
00187 
00188 // ****************************************
00189 // Workspace
00190 // ****************************************
00191 
00195 bool Workspace::workspaceEvent( XEvent * e )
00196     {
00197     if ( mouse_emulation && (e->type == ButtonPress || e->type == ButtonRelease ) ) 
00198         {
00199         mouse_emulation = FALSE;
00200         XUngrabKeyboard( qt_xdisplay(), qt_x_time );
00201         }
00202 
00203     if ( e->type == PropertyNotify || e->type == ClientMessage ) 
00204         {
00205         if ( netCheck( e ) )
00206             return TRUE;
00207         }
00208 
00209     // events that should be handled before Clients can get them
00210     switch (e->type) 
00211         {
00212         case ButtonPress:
00213         case ButtonRelease:
00214             was_user_interaction = true;
00215         // fallthrough
00216         case MotionNotify:
00217             if ( tab_grab || control_grab )
00218                 {
00219                 tab_box->handleMouseEvent( e );
00220                 return TRUE;
00221                 }
00222             break;
00223         case KeyPress:
00224             {
00225             was_user_interaction = true;
00226             KKeyNative keyX( (XEvent*)e );
00227             uint keyQt = keyX.keyCodeQt();
00228             kdDebug(125) << "Workspace::keyPress( " << keyX.key().toString() << " )" << endl;
00229             if (movingClient)
00230                 {
00231                 movingClient->keyPressEvent(keyQt);
00232                 return true;
00233                 }
00234             if( tab_grab || control_grab )
00235                 {
00236                 tabBoxKeyPress( keyX );
00237                 return true;
00238                 }
00239             break;
00240             }
00241         case KeyRelease:
00242             was_user_interaction = true;
00243             if( tab_grab || control_grab )
00244                 {
00245                 tabBoxKeyRelease( e->xkey );
00246                 return true;
00247                 }
00248             break;
00249         };
00250 
00251     if( Client* c = findClient( WindowMatchPredicate( e->xany.window )))
00252         {
00253         if( c->windowEvent( e ))
00254             return true;
00255         }
00256     else if( Client* c = findClient( WrapperIdMatchPredicate( e->xany.window )))
00257         {
00258         if( c->windowEvent( e ))
00259             return true;
00260         }
00261     else if( Client* c = findClient( FrameIdMatchPredicate( e->xany.window )))
00262         {
00263         if( c->windowEvent( e ))
00264             return true;
00265         }
00266     else
00267         {
00268         Window special = findSpecialEventWindow( e );
00269         if( special != None )
00270             if( Client* c = findClient( WindowMatchPredicate( special )))
00271                 {
00272                 if( c->windowEvent( e ))
00273                     return true;
00274                 }
00275         }
00276     if( movingClient != NULL && movingClient->moveResizeGrabWindow() == e->xany.window
00277         && ( e->type == MotionNotify || e->type == ButtonPress || e->type == ButtonRelease ))
00278         {
00279         if( movingClient->windowEvent( e ))
00280             return true;
00281         }
00282 
00283     switch (e->type) 
00284         {
00285         case CreateNotify:
00286             if ( e->xcreatewindow.parent == root &&
00287                  !QWidget::find( e->xcreatewindow.window) &&
00288                  !e->xcreatewindow.override_redirect )
00289             {
00290         // see comments for allowClientActivation()
00291             XChangeProperty(qt_xdisplay(), e->xcreatewindow.window,
00292                             atoms->kde_net_wm_user_creation_time, XA_CARDINAL,
00293                             32, PropModeReplace, (unsigned char *)&qt_x_time, 1);
00294             }
00295         break;
00296 
00297     case UnmapNotify:
00298             {
00299         // check for system tray windows
00300             if ( removeSystemTrayWin( e->xunmap.window, true ) ) 
00301                 {
00302         // If the system tray gets destroyed, the system tray
00303         // icons automatically get unmapped, reparented and mapped
00304         // again to the closest non-client ancestor due to
00305         // QXEmbed's SaveSet feature. Unfortunatly with kicker
00306         // this closest ancestor is not the root window, but our
00307         // decoration, so we reparent explicitely back to the root
00308         // window.
00309                 XEvent ev;
00310                 WId w = e->xunmap.window;
00311                 if ( XCheckTypedWindowEvent (qt_xdisplay(), w,
00312                                              ReparentNotify, &ev) )
00313                     {
00314                     if ( ev.xreparent.parent != root ) 
00315                         {
00316                         XReparentWindow( qt_xdisplay(), w, root, 0, 0 );
00317                         addSystemTrayWin( w );
00318                         }
00319                     }
00320                 return TRUE;
00321                 }
00322 
00323             return ( e->xunmap.event != e->xunmap.window ); // hide wm typical event from Qt
00324             }
00325         case MapNotify:
00326 
00327             return ( e->xmap.event != e->xmap.window ); // hide wm typical event from Qt
00328 
00329         case ReparentNotify:
00330             {
00331         //do not confuse Qt with these events. After all, _we_ are the
00332         //window manager who does the reparenting.
00333             return TRUE;
00334             }
00335         case DestroyNotify:
00336             {
00337             if ( removeSystemTrayWin( e->xdestroywindow.window, false ) )
00338                 return TRUE;
00339             return false;
00340             }
00341         case MapRequest:
00342             {
00343             updateXTime();
00344 
00345             // e->xmaprequest.window is different from e->xany.window
00346             // TODO this shouldn't be necessary now
00347             Client* c = findClient( WindowMatchPredicate( e->xmaprequest.window ));
00348             if ( !c ) 
00349                 {
00350 // don't check for the parent being the root window, this breaks when some app unmaps
00351 // a window, changes something and immediately maps it back, without giving KWin
00352 // a chance to reparent it back to root
00353 // since KWin can get MapRequest only for root window children and
00354 // children of WindowWrapper (=clients), the check is AFAIK useless anyway
00355 // Note: Now the save-set support in Client::mapRequestEvent() actually requires that
00356 // this code doesn't check the parent to be root.
00357 //            if ( e->xmaprequest.parent == root ) { //###TODO store previously destroyed client ids
00358                 if ( addSystemTrayWin( e->xmaprequest.window ) )
00359                     return TRUE;
00360                 c = createClient( e->xmaprequest.window, false );
00361                 if ( c != NULL && root != qt_xrootwin() ) 
00362                     { // TODO what is this?
00363                     // TODO may use QWidget::create
00364                     XReparentWindow( qt_xdisplay(), c->frameId(), root, 0, 0 );
00365                     }
00366                 if( c == NULL ) // refused to manage, simply map it (most probably override redirect)
00367                     XMapRaised( qt_xdisplay(), e->xmaprequest.window );
00368                 return true;
00369                 }
00370             if( c )
00371                 {
00372                 c->windowEvent( e );
00373                 updateFocusChains( c, FocusChainUpdate );
00374                 return true;
00375                 }
00376             break;
00377             }
00378         case EnterNotify:
00379             {
00380             if ( QWhatsThis::inWhatsThisMode() )
00381                 {
00382                 QWidget* w = QWidget::find( e->xcrossing.window );
00383                 if ( w )
00384                     QWhatsThis::leaveWhatsThisMode();
00385                 }
00386             if( electricBorder(e))
00387                 return true;
00388             break;
00389             }
00390         case LeaveNotify:
00391             {
00392             if ( !QWhatsThis::inWhatsThisMode() )
00393                 break;
00394             // TODO is this cliente ever found, given that client events are searched above?
00395             Client* c = findClient( FrameIdMatchPredicate( e->xcrossing.window ));
00396             if ( c && e->xcrossing.detail != NotifyInferior )
00397                 QWhatsThis::leaveWhatsThisMode();
00398             break;
00399             }
00400         case ConfigureRequest:
00401             {
00402             if ( e->xconfigurerequest.parent == root ) 
00403                 {
00404                 XWindowChanges wc;
00405                 wc.border_width = e->xconfigurerequest.border_width;
00406                 wc.x = e->xconfigurerequest.x;
00407                 wc.y = e->xconfigurerequest.y;
00408                 wc.width = e->xconfigurerequest.width;
00409                 wc.height = e->xconfigurerequest.height;
00410                 wc.sibling = None;
00411                 wc.stack_mode = Above;
00412                 unsigned int value_mask = e->xconfigurerequest.value_mask
00413                     & ( CWX | CWY | CWWidth | CWHeight | CWBorderWidth );
00414                 XConfigureWindow( qt_xdisplay(), e->xconfigurerequest.window, value_mask, &wc );
00415                 return true;
00416                 }
00417             break;
00418             }
00419         case KeyPress:
00420             if ( mouse_emulation )
00421                 return keyPressMouseEmulation( e->xkey );
00422             break;
00423         case KeyRelease:
00424             if ( mouse_emulation )
00425                 return FALSE;
00426             break;
00427         case FocusIn:
00428             if( e->xfocus.window == rootWin()
00429                 && ( e->xfocus.detail == NotifyDetailNone || e->xfocus.detail == NotifyPointerRoot ))
00430                 {
00431                 updateXTime(); // focusToNull() uses qt_x_time, which is old now (FocusIn has no timestamp)
00432                 Window focus;
00433                 int revert;
00434                 XGetInputFocus( qt_xdisplay(), &focus, &revert );
00435                 if( focus == None || focus == PointerRoot )
00436                     {
00437                     //kdWarning( 1212 ) << "X focus set to None/PointerRoot, reseting focus" << endl;
00438                     Client *c = mostRecentlyActivatedClient();
00439                     if( c != NULL )
00440                         requestFocus( c, true );
00441                     else if( activateNextClient( NULL ))
00442                         ; // ok, activated
00443                     else
00444                         focusToNull();
00445                     }
00446                 }
00447             // fall through
00448         case FocusOut:
00449             return true; // always eat these, they would tell Qt that KWin is the active app
00450         case ClientMessage:
00451             if( electricBorder( e ))
00452                 return true;
00453             break;
00454         default:
00455             break;
00456         }
00457     return FALSE;
00458     }
00459 
00460 // Some events don't have the actual window which caused the event
00461 // as e->xany.window (e.g. ConfigureRequest), but as some other
00462 // field in the XEvent structure.
00463 Window Workspace::findSpecialEventWindow( XEvent* e )
00464     {
00465     switch( e->type )
00466         {
00467         case CreateNotify:
00468             return e->xcreatewindow.window;
00469         case DestroyNotify:
00470             return e->xdestroywindow.window;
00471         case UnmapNotify:
00472             return e->xunmap.window;
00473         case MapNotify:
00474             return e->xmap.window;
00475         case MapRequest:
00476             return e->xmaprequest.window;
00477         case ReparentNotify:
00478             return e->xreparent.window;
00479         case ConfigureNotify:
00480             return e->xconfigure.window;
00481         case GravityNotify:
00482             return e->xgravity.window;
00483         case ConfigureRequest:
00484             return e->xconfigurerequest.window;
00485         case CirculateNotify:
00486             return e->xcirculate.window;
00487         case CirculateRequest:
00488             return e->xcirculaterequest.window;
00489         default:
00490             return None;
00491         };
00492     }
00493 
00497 bool Workspace::netCheck( XEvent* e )
00498     {
00499     unsigned int dirty = rootInfo->event( e );
00500 
00501     if ( dirty & NET::DesktopNames )
00502         saveDesktopSettings();
00503 
00504     return dirty != 0;
00505     }
00506 
00507 
00508 // ****************************************
00509 // Client
00510 // ****************************************
00511 
00515 bool Client::windowEvent( XEvent* e )
00516     {
00517     if( e->xany.window == window()) // avoid doing stuff on frame or wrapper
00518         {
00519         unsigned long dirty[ 2 ];
00520         info->event( e, dirty, 2 ); // pass through the NET stuff
00521 
00522         if ( ( dirty[ WinInfo::PROTOCOLS ] & NET::WMName ) != 0 )
00523             fetchName();
00524         if ( ( dirty[ WinInfo::PROTOCOLS ] & NET::WMIconName ) != 0 )
00525             fetchIconicName();
00526         if ( ( dirty[ WinInfo::PROTOCOLS ] & NET::WMStrut ) != 0
00527             || ( dirty[ WinInfo::PROTOCOLS2 ] & NET::WM2ExtendedStrut ) != 0 )
00528             {
00529             if( isTopMenu())  // the fallback mode of KMenuBar may alter the strut
00530                 checkWorkspacePosition();  // restore it
00531             workspace()->updateClientArea();
00532             }
00533         if ( ( dirty[ WinInfo::PROTOCOLS ] & NET::WMIcon) != 0 )
00534             getIcons();
00535         // Note there's a difference between userTime() and info->userTime()
00536         // info->userTime() is the value of the property, userTime() also includes
00537         // updates of the time done by KWin (ButtonPress on windowrapper etc.).
00538         if(( dirty[ WinInfo::PROTOCOLS2 ] & NET::WM2UserTime ) != 0 )
00539             {
00540             workspace()->setWasUserInteraction();
00541             updateUserTime( info->userTime());
00542             }
00543         if(( dirty[ WinInfo::PROTOCOLS2 ] & NET::WM2StartupId ) != 0 )
00544             startupIdChanged();
00545         if( dirty[ WinInfo::PROTOCOLS ] & NET::WMIconGeometry )
00546             {
00547             if( demandAttentionKNotifyTimer != NULL )
00548                 demandAttentionKNotify();
00549             }
00550         }
00551 
00552 // TODO move all focus handling stuff to separate file?
00553     switch (e->type) 
00554         {
00555         case UnmapNotify:
00556             unmapNotifyEvent( &e->xunmap );
00557             break;
00558         case DestroyNotify:
00559             destroyNotifyEvent( &e->xdestroywindow );
00560             break;
00561         case MapRequest:
00562             // this one may pass the event to workspace
00563             return mapRequestEvent( &e->xmaprequest );
00564         case ConfigureRequest:
00565             configureRequestEvent( &e->xconfigurerequest );
00566             break;
00567         case PropertyNotify:
00568             propertyNotifyEvent( &e->xproperty );
00569             break;
00570         case KeyPress:
00571             updateUserTime();
00572             workspace()->setWasUserInteraction();
00573             break;
00574         case ButtonPress:
00575             updateUserTime();
00576             workspace()->setWasUserInteraction();
00577             buttonPressEvent( e->xbutton.window, e->xbutton.button, e->xbutton.state,
00578                 e->xbutton.x, e->xbutton.y, e->xbutton.x_root, e->xbutton.y_root );
00579             break;
00580         case KeyRelease:
00581     // don't update user time on releases
00582     // e.g. if the user presses Alt+F2, the Alt release
00583     // would appear as user input to the currently active window
00584             break;
00585         case ButtonRelease:
00586     // don't update user time on releases
00587     // e.g. if the user presses Alt+F2, the Alt release
00588     // would appear as user input to the currently active window
00589             buttonReleaseEvent( e->xbutton.window, e->xbutton.button, e->xbutton.state,
00590                 e->xbutton.x, e->xbutton.y, e->xbutton.x_root, e->xbutton.y_root );
00591             break;
00592         case MotionNotify:
00593             motionNotifyEvent( e->xmotion.window, e->xmotion.state,
00594                 e->xmotion.x, e->xmotion.y, e->xmotion.x_root, e->xmotion.y_root );
00595             break;
00596         case EnterNotify:
00597             enterNotifyEvent( &e->xcrossing );
00598             // MotionNotify is guaranteed to be generated only if the mouse
00599             // move start and ends in the window; for cases when it only
00600             // starts or only ends there, Enter/LeaveNotify are generated.
00601             // Fake a MotionEvent in such cases to make handle of mouse
00602             // events simpler (Qt does that too).
00603             motionNotifyEvent( e->xcrossing.window, e->xcrossing.state,
00604                 e->xcrossing.x, e->xcrossing.y, e->xcrossing.x_root, e->xcrossing.y_root );
00605             break;
00606         case LeaveNotify:
00607             motionNotifyEvent( e->xcrossing.window, e->xcrossing.state,
00608                 e->xcrossing.x, e->xcrossing.y, e->xcrossing.x_root, e->xcrossing.y_root );
00609             leaveNotifyEvent( &e->xcrossing );
00610             break;
00611         case FocusIn:
00612             focusInEvent( &e->xfocus );
00613             break;
00614         case FocusOut:
00615             focusOutEvent( &e->xfocus );
00616             break;
00617         case ReparentNotify:
00618             break;
00619         case ClientMessage:
00620             clientMessageEvent( &e->xclient );
00621             break;
00622         case ColormapChangeMask:
00623             if( e->xany.window == window())
00624             {
00625             cmap = e->xcolormap.colormap;
00626             if ( isActive() )
00627                 workspace()->updateColormap();
00628             }
00629             break;
00630         default:
00631             if( e->xany.window == window())
00632             {
00633             if( e->type == Shape::shapeEvent() )
00634                 {
00635                 is_shape = Shape::hasShape( window()); // workaround for #19644
00636                 updateShape();
00637                 }
00638             }
00639             break;
00640         }
00641     return true; // eat all events
00642     }
00643 
00647 bool Client::mapRequestEvent( XMapRequestEvent* e )
00648     {
00649     if( e->window != window())
00650         {
00651         // Special support for the save-set feature, which is a bit broken.
00652         // If there's a window from one client embedded in another one,
00653         // e.g. using XEMBED, and the embedder suddenly looses its X connection,
00654         // save-set will reparent the embedded window to its closest ancestor
00655         // that will remains. Unfortunately, with reparenting window managers,
00656         // this is not the root window, but the frame (or in KWin's case,
00657         // it's the wrapper for the client window). In this case,
00658         // the wrapper will get ReparentNotify for a window it won't know,
00659         // which will be ignored, and then it gets MapRequest, as save-set
00660         // always maps. Returning true here means that Workspace::workspaceEvent()
00661         // will handle this MapRequest and manage this window (i.e. act as if
00662         // it was reparented to root window).
00663         if( e->parent == wrapperId())
00664             return false;
00665         return true; // no messing with frame etc.
00666         }
00667     if( isTopMenu() && workspace()->managingTopMenus())
00668         return true; // kwin controls these
00669     switch ( mappingState() )
00670         {
00671         case WithdrawnState:
00672             assert( false ); // WMs are not supposed to manage clients in Withdrawn state,
00673 //        manage();      // after initial mapping manage() is called from createClient()
00674             break;
00675         case IconicState:
00676     // also copied in clientMessage()
00677             if( isMinimized())
00678                 unminimize();
00679             if( isShade())
00680                 setShade( ShadeNone );
00681             if( !isOnCurrentDesktop())
00682                 {
00683                 if( workspace()->allowClientActivation( this ))
00684                     workspace()->activateClient( this );
00685                 else
00686                     demandAttention();
00687                 }
00688             break;
00689         case NormalState:
00690         // TODO fake MapNotify?
00691             break;
00692         }
00693     return true;
00694     }
00695 
00699 void Client::unmapNotifyEvent( XUnmapEvent* e )
00700     {
00701     if( e->window != window())
00702         return;
00703     if( e->event != wrapperId())
00704         { // most probably event from root window when initially reparenting
00705         bool ignore = true;
00706         if( e->event == workspace()->rootWin() && e->send_event )
00707             ignore = false; // XWithdrawWindow()
00708         if( ignore )
00709             return;
00710         }
00711     switch( mappingState())
00712         {
00713         case IconicState:
00714             releaseWindow();
00715           return;
00716         case NormalState:
00717             // maybe we will be destroyed soon. Check this first.
00718             XEvent ev;
00719             if( XCheckTypedWindowEvent (qt_xdisplay(), window(),
00720                 DestroyNotify, &ev) ) // TODO I don't like this much
00721                 {
00722                 destroyClient(); // deletes this
00723                 return;
00724                 }
00725             releaseWindow();
00726           break;
00727     default:
00728         assert( false );
00729         }
00730     }
00731 
00732 void Client::destroyNotifyEvent( XDestroyWindowEvent* e )
00733     {
00734     if( e->window != window())
00735         return;
00736     destroyClient();
00737     }
00738     
00739     
00740 bool         blockAnimation = FALSE;
00741 
00745 void Client::clientMessageEvent( XClientMessageEvent* e )
00746     {
00747     if( e->window != window())
00748         return; // ignore frame/wrapper
00749     // WM_STATE
00750     if ( e->message_type == atoms->kde_wm_change_state )
00751         {
00752         if( isTopMenu() && workspace()->managingTopMenus())
00753             return; // kwin controls these
00754         if( e->data.l[ 1 ] )
00755             blockAnimation = true;
00756         if( e->data.l[ 0 ] == IconicState )
00757             minimize();
00758         else if( e->data.l[ 0 ] == NormalState )
00759             { // copied from mapRequest()
00760             if( isMinimized())
00761                 unminimize();
00762             if( isShade())
00763                 setShade( ShadeNone );
00764             if( !isOnCurrentDesktop())
00765                 {
00766                 if( workspace()->allowClientActivation( this ))
00767                     workspace()->activateClient( this );
00768                 else
00769                     demandAttention();
00770                 }
00771             }
00772         blockAnimation = false;
00773         }
00774     else if ( e->message_type == atoms->wm_change_state)
00775         {
00776         if( isTopMenu() && workspace()->managingTopMenus())
00777             return; // kwin controls these
00778         if ( e->data.l[0] == IconicState )
00779             minimize();
00780         return;
00781         }
00782     }
00783 
00784 
00788 void Client::configureRequestEvent( XConfigureRequestEvent* e )
00789     {
00790     if( e->window != window())
00791         return; // ignore frame/wrapper
00792     if ( isResize() || isMove())
00793         return; // we have better things to do right now
00794 
00795     if( fullscreen_mode == FullScreenNormal ) // refuse resizing of fullscreen windows
00796         { // but allow resizing fullscreen hacks in order to let them cancel fullscreen mode
00797         sendSyntheticConfigureNotify();
00798         return;
00799         }
00800     if( isSplash() // no manipulations with splashscreens either
00801         || isTopMenu()) // topmenus neither
00802         {
00803         sendSyntheticConfigureNotify();
00804         return;
00805         }
00806 
00807     if ( e->value_mask & CWBorderWidth ) 
00808         {
00809         // first, get rid of a window border
00810         XWindowChanges wc;
00811         unsigned int value_mask = 0;
00812 
00813         wc.border_width = 0;
00814         value_mask = CWBorderWidth;
00815         XConfigureWindow( qt_xdisplay(), window(), value_mask, & wc );
00816         }
00817 
00818     if( e->value_mask & ( CWX | CWY | CWHeight | CWWidth ))
00819         configureRequest( e->value_mask, e->x, e->y, e->width, e->height, 0, false );
00820 
00821     if ( e->value_mask & CWStackMode )
00822         restackWindow( e->above, e->detail, NET::FromApplication, userTime(), false );
00823 
00824     // TODO sending a synthetic configure notify always is fine, even in cases where
00825     // the ICCCM doesn't require this - it can be though of as 'the WM decided to move
00826     // the window later'. The client should not cause that many configure request,
00827     // so this should not have any significant impact. With user moving/resizing
00828     // the it should be optimized though (see also Client::setGeometry()/plainResize()/move()).
00829     sendSyntheticConfigureNotify();
00830 
00831     // SELI TODO accept configure requests for isDesktop windows (because kdesktop
00832     // may get XRANDR resize event before kwin), but check it's still at the bottom?
00833     }
00834 
00835 
00839 void Client::propertyNotifyEvent( XPropertyEvent* e )
00840     {
00841     if( e->window != window())
00842         return; // ignore frame/wrapper
00843     switch ( e->atom ) 
00844         {
00845         case XA_WM_NORMAL_HINTS:
00846             getWmNormalHints();
00847             break;
00848         case XA_WM_NAME:
00849             fetchName();
00850             break;
00851         case XA_WM_ICON_NAME:
00852             fetchIconicName();
00853             break;
00854         case XA_WM_TRANSIENT_FOR:
00855             readTransient();
00856             break;
00857         case XA_WM_HINTS:
00858             getWMHints();
00859             getIcons(); // because KWin::icon() uses WMHints as fallback
00860             break;
00861         default:
00862             if ( e->atom == atoms->wm_protocols )
00863                 getWindowProtocols();
00864             else if (e->atom == atoms->wm_client_leader )
00865                 getWmClientLeader();
00866             else if( e->atom == qt_window_role )
00867                 window_role = staticWindowRole( window());
00868             else if( e->atom == atoms->motif_wm_hints )
00869                 getMotifHints();
00870             break;
00871         }
00872     }
00873 
00874 
00875 void Client::enterNotifyEvent( XCrossingEvent* e )
00876     {
00877     if( e->window != frameId())
00878         return; // care only about entering the whole frame
00879     if( e->mode == NotifyNormal ||
00880          ( !options->focusPolicyIsReasonable() &&
00881              e->mode == NotifyUngrab ) ) 
00882         {
00883 
00884         if (options->shadeHover && isShade()) 
00885             {
00886             delete shadeHoverTimer;
00887             shadeHoverTimer = new QTimer( this );
00888             connect( shadeHoverTimer, SIGNAL( timeout() ), this, SLOT( shadeHover() ));
00889             shadeHoverTimer->start( options->shadeHoverInterval, TRUE );
00890             }
00891 
00892         if ( options->focusPolicy == Options::ClickToFocus )
00893             return;
00894 
00895         if ( options->autoRaise && !isDesktop() &&
00896              !isDock() && !isTopMenu() && workspace()->focusChangeEnabled() &&
00897              workspace()->topClientOnDesktop( workspace()->currentDesktop()) != this ) 
00898             {
00899             delete autoRaiseTimer;
00900             autoRaiseTimer = new QTimer( this );
00901             connect( autoRaiseTimer, SIGNAL( timeout() ), this, SLOT( autoRaise() ) );
00902             autoRaiseTimer->start( options->autoRaiseInterval, TRUE  );
00903             }
00904 
00905         if ( options->focusPolicy !=  Options::FocusStrictlyUnderMouse && ( isDesktop() || isDock() || isTopMenu() ) )
00906             return;
00907         if ( options->delayFocus )
00908             workspace()->requestDelayFocus( this );
00909         else
00910             workspace()->requestFocus( this );
00911 
00912         return;
00913         }
00914     }
00915 
00916 void Client::leaveNotifyEvent( XCrossingEvent* e )
00917     {
00918     if( e->window != frameId())
00919         return; // care only about leaving the whole frame
00920     if ( e->mode == NotifyNormal ) 
00921         {
00922         if ( !buttonDown ) 
00923             {
00924             mode = PositionCenter;
00925             setCursor( arrowCursor );
00926             }
00927         bool lostMouse = !rect().contains( QPoint( e->x, e->y ) );
00928         // 'lostMouse' wouldn't work with e.g. B2 or Keramik, which have non-rectangular decorations
00929         // (i.e. the LeaveNotify event comes before leaving the rect and no LeaveNotify event
00930         // comes after leaving the rect) - so lets check if the pointer is really outside the window
00931 
00932         // TODO this still sucks if a window appears above this one - it should lose the mouse
00933         // if this window is another client, but not if it's a popup ... maybe after KDE3.1 :(
00934         // (repeat after me 'AARGHL!')
00935         if ( !lostMouse && e->detail != NotifyInferior ) 
00936             {
00937             int d1, d2, d3, d4;
00938             unsigned int d5;
00939             Window w, child;
00940             if( XQueryPointer( qt_xdisplay(), frameId(), &w, &child, &d1, &d2, &d3, &d4, &d5 ) == False
00941                 || child == None )
00942                 lostMouse = true; // really lost the mouse
00943             }
00944         if ( lostMouse ) 
00945             {
00946             cancelAutoRaise();
00947             workspace()->cancelDelayFocus();
00948             cancelShadeHover();
00949             if ( shade_mode == ShadeHover && !moveResizeMode && !buttonDown )
00950                setShade( ShadeNormal );
00951             }
00952         if ( options->focusPolicy == Options::FocusStrictlyUnderMouse )
00953             if ( isActive() && lostMouse )
00954                 workspace()->requestFocus( 0 ) ;
00955         return;
00956         }
00957     }
00958 
00959 #define XCapL KKeyNative::modXLock()
00960 #define XNumL KKeyNative::modXNumLock()
00961 #define XScrL KKeyNative::modXScrollLock()
00962 void Client::grabButton( int modifier )
00963     {
00964     unsigned int mods[ 8 ] = 
00965         {
00966         0, XCapL, XNumL, XNumL | XCapL,
00967         XScrL, XScrL | XCapL,
00968         XScrL | XNumL, XScrL | XNumL | XCapL
00969         };
00970     for( int i = 0;
00971          i < 8;
00972          ++i )
00973         XGrabButton( qt_xdisplay(), AnyButton,
00974             modifier | mods[ i ],
00975             wrapperId(),  FALSE, ButtonPressMask,
00976             GrabModeSync, GrabModeAsync, None, None );
00977     }
00978 
00979 void Client::ungrabButton( int modifier )
00980     {
00981     unsigned int mods[ 8 ] = 
00982         {
00983         0, XCapL, XNumL, XNumL | XCapL,
00984         XScrL, XScrL | XCapL,
00985         XScrL | XNumL, XScrL | XNumL | XCapL
00986         };
00987     for( int i = 0;
00988          i < 8;
00989          ++i )
00990         XUngrabButton( qt_xdisplay(), AnyButton,
00991             modifier | mods[ i ], wrapperId());
00992     }
00993 #undef XCapL
00994 #undef XNumL
00995 #undef XScrL
00996 
00997 /*
00998   Releases the passive grab for some modifier combinations when a
00999   window becomes active. This helps broken X programs that
01000   missinterpret LeaveNotify events in grab mode to work properly
01001   (Motif, AWT, Tk, ...)
01002  */
01003 void Client::updateMouseGrab()
01004     {
01005     if( isActive() && !workspace()->forcedGlobalMouseGrab()) // see Workspace::establishTabBoxGrab()
01006         {
01007         // remove the grab for no modifiers only if the window
01008         // is unobscured or if the user doesn't want click raise
01009         // (it is unobscured if it the topmost in the unconstrained stacking order, i.e. it is
01010         // the most recently raised window)
01011         bool not_obscured = workspace()->topClientOnDesktop( workspace()->currentDesktop(), true, false ) == this;
01012         if( !options->clickRaise || not_obscured )
01013             ungrabButton( None );
01014         else
01015             grabButton( None );
01016         ungrabButton( ShiftMask );
01017         ungrabButton( ControlMask );
01018         ungrabButton( ControlMask | ShiftMask );
01019         }
01020     else
01021         {
01022         XUngrabButton( qt_xdisplay(), AnyButton, AnyModifier, wrapperId());
01023         // simply grab all modifier combinations
01024         XGrabButton(qt_xdisplay(), AnyButton, AnyModifier, wrapperId(), FALSE,
01025             ButtonPressMask,
01026             GrabModeSync, GrabModeAsync,
01027             None, None );
01028         }
01029     }
01030 
01031 int qtToX11Button( Qt::ButtonState button )
01032     {
01033     if( button == Qt::LeftButton )
01034         return Button1;
01035     else if( button == Qt::MidButton )
01036         return Button2;
01037     else if( button == Qt::RightButton )
01038         return Button3;
01039     return AnyButton;
01040     }
01041     
01042 int qtToX11State( Qt::ButtonState state )
01043     {
01044     int ret = 0;
01045     if( state & Qt::LeftButton )
01046         ret |= Button1Mask;
01047     if( state & Qt::MidButton )
01048         ret |= Button2Mask;
01049     if( state & Qt::RightButton )
01050         ret |= Button3Mask;
01051     if( state & Qt::ShiftButton )
01052         ret |= ShiftMask;
01053     if( state & Qt::ControlButton )
01054         ret |= ControlMask;
01055     if( state & Qt::AltButton )
01056         ret |= KKeyNative::modX(KKey::ALT);
01057     if( state & Qt::MetaButton )
01058         ret |= KKeyNative::modX(KKey::WIN);
01059     return ret;
01060     }
01061 
01062 // Qt propagates mouse events up the widget hierachy, which means events
01063 // for the decoration window cannot be (easily) intercepted as X11 events
01064 bool Client::eventFilter( QObject* o, QEvent* e )
01065     {
01066     if( decoration == NULL
01067         || o != decoration->widget())
01068         return false;
01069     if( e->type() == QEvent::MouseButtonPress )
01070         {
01071         QMouseEvent* ev = static_cast< QMouseEvent* >( e );
01072         return buttonPressEvent( decorationId(), qtToX11Button( ev->button()), qtToX11State( ev->state()),
01073             ev->x(), ev->y(), ev->globalX(), ev->globalY() );
01074         }
01075     if( e->type() == QEvent::MouseButtonRelease )
01076         {
01077         QMouseEvent* ev = static_cast< QMouseEvent* >( e );
01078         return buttonReleaseEvent( decorationId(), qtToX11Button( ev->button()), qtToX11State( ev->state()),
01079             ev->x(), ev->y(), ev->globalX(), ev->globalY() );
01080         }
01081     if( e->type() == QEvent::MouseMove ) // FRAME i fake z enter/leave?
01082         {
01083         QMouseEvent* ev = static_cast< QMouseEvent* >( e );
01084         return motionNotifyEvent( decorationId(), qtToX11State( ev->state()),
01085             ev->x(), ev->y(), ev->globalX(), ev->globalY() );
01086         }
01087     if( e->type() == QEvent::Wheel )
01088         {
01089         QWheelEvent* ev = static_cast< QWheelEvent* >( e );
01090         bool r = buttonPressEvent( decorationId(), ev->delta() > 0 ? Button4 : Button5, qtToX11State( ev->state()),
01091             ev->x(), ev->y(), ev->globalX(), ev->globalY() );
01092         r = r || buttonReleaseEvent( decorationId(), ev->delta() > 0 ? Button4 : Button5, qtToX11State( ev->state()),
01093             ev->x(), ev->y(), ev->globalX(), ev->globalY() );
01094         return r;
01095         }
01096     if( e->type() == QEvent::Resize )
01097         {
01098         QResizeEvent* ev = static_cast< QResizeEvent* >( e );
01099         // Filter out resize events that inform about size different than frame size.
01100         // This will ensure that decoration->width() etc. and decoration->widget()->width() will be in sync.
01101         // These events only seem to be delayed events from initial resizing before show() was called
01102         // on the decoration widget.
01103         if( ev->size() != size())
01104             return true;
01105         }
01106     return false;
01107     }
01108 
01109 // return value matters only when filtering events before decoration gets them
01110 bool Client::buttonPressEvent( Window w, int button, int state, int x, int y, int x_root, int y_root )
01111     {
01112     if (buttonDown)
01113         {
01114         if( w == wrapperId())
01115             XAllowEvents(qt_xdisplay(), SyncPointer, CurrentTime ); //qt_x_time);
01116         return true;
01117         }
01118 
01119     if( w == wrapperId() || w == frameId() || w == decorationId())
01120         { // FRAME neco s tohohle by se melo zpracovat, nez to dostane dekorace
01121         updateUserTime();
01122         workspace()->setWasUserInteraction();
01123         uint keyModX = (options->keyCmdAllModKey() == Qt::Key_Meta) ?
01124             KKeyNative::modX(KKey::WIN) :
01125             KKeyNative::modX(KKey::ALT);
01126         bool bModKeyHeld = keyModX != 0 && ( state & KKeyNative::accelModMaskX()) == keyModX;
01127 
01128         if( isSplash()
01129             && button == Button1 && !bModKeyHeld )
01130             { // hide splashwindow if the user clicks on it
01131             hideClient( true );
01132             if( w == wrapperId())
01133                     XAllowEvents(qt_xdisplay(), SyncPointer, CurrentTime ); //qt_x_time);
01134             return true;
01135             }
01136 
01137         Options::MouseCommand com = Options::MouseNothing;
01138         bool was_action = false;
01139         bool perform_handled = false;
01140         if ( bModKeyHeld )
01141             {
01142             was_action = true;
01143             switch (button) 
01144                 {
01145                 case Button1:
01146                     com = options->commandAll1();
01147                     break;
01148                 case Button2:
01149                     com = options->commandAll2();
01150                     break;
01151                 case Button3:
01152                     com = options->commandAll3();
01153                     break;
01154                 case Button4:
01155                 case Button5:
01156                     com = options->operationWindowMouseWheel( button == Button4 ? 120 : -120 );
01157                     break;
01158                 }
01159             }
01160         else
01161             { // inactive inner window
01162             if( !isActive() && w == wrapperId())
01163                 {
01164                 was_action = true;
01165                 perform_handled = true;
01166                 switch (button) 
01167                     {
01168                     case Button1:
01169                         com = options->commandWindow1();
01170                         break;
01171                     case Button2:
01172                         com = options->commandWindow2();
01173                         break;
01174                     case Button3:
01175                         com = options->commandWindow3();
01176                         break;
01177                     default:
01178                         com = Options::MouseActivateAndPassClick;
01179                     }
01180                 }
01181             // active inner window
01182             if( isActive() && w == wrapperId()
01183                 && options->clickRaise && button < 4 ) // exclude wheel
01184                 {
01185                 com = Options::MouseActivateRaiseAndPassClick;
01186                 was_action = true;
01187                 perform_handled = true;
01188                 }
01189             }
01190         if( was_action )
01191             {
01192             bool replay = performMouseCommand( com, QPoint( x_root, y_root), perform_handled );
01193 
01194             if ( isSpecialWindow())
01195                 replay = TRUE;
01196 
01197             if( w == wrapperId()) // these can come only from a grab
01198                 XAllowEvents(qt_xdisplay(), replay? ReplayPointer : SyncPointer, CurrentTime ); //qt_x_time);
01199             return true;
01200             }
01201         }
01202 
01203     if( w == wrapperId()) // these can come only from a grab
01204         {
01205         XAllowEvents(qt_xdisplay(), ReplayPointer, CurrentTime ); //qt_x_time);
01206         return true;
01207         }
01208     if( w == decorationId())
01209         return false; // don't eat decoration events
01210     if( w == frameId())
01211         processDecorationButtonPress( button, state, x, y, x_root, y_root );
01212     return true;
01213     }
01214 
01215 
01216 // this function processes button press events only after decoration decides not to handle them,
01217 // unlike buttonPressEvent(), which (when the window is decoration) filters events before decoration gets them
01218 void Client::processDecorationButtonPress( int button, int /*state*/, int x, int y, int x_root, int y_root )
01219     {
01220     Options::MouseCommand com = Options::MouseNothing;
01221     bool active = isActive();
01222     if ( !wantsInput() ) // we cannot be active, use it anyway
01223         active = TRUE;
01224 
01225     if ( button == Button1 )
01226         com = active ? options->commandActiveTitlebar1() : options->commandInactiveTitlebar1();
01227     else if ( button == Button2 )
01228         com = active ? options->commandActiveTitlebar2() : options->commandInactiveTitlebar2();
01229     else if ( button == Button3 )
01230         com = active ? options->commandActiveTitlebar3() : options->commandInactiveTitlebar3();
01231     if( button == Button1
01232         && com != Options::MouseOperationsMenu // actions where it's not possible to get the matching
01233         && com != Options::MouseMinimize )  // mouse release event
01234         {
01235         mode = mousePosition( QPoint( x, y ));
01236         buttonDown = TRUE;
01237         moveOffset = QPoint( x, y );
01238         invertedMoveOffset = rect().bottomRight() - moveOffset;
01239         unrestrictedMoveResize = false;
01240         setCursor( mode ); // update to sizeAllCursor if about to move
01241         }
01242     performMouseCommand( com, QPoint( x_root, y_root ));
01243     }
01244 
01245 // called from decoration
01246 void Client::processMousePressEvent( QMouseEvent* e )
01247     {
01248     if( e->type() != QEvent::MouseButtonPress )
01249         {
01250         kdWarning() << "processMousePressEvent()" << endl;
01251         return;
01252         }
01253     int button;
01254     switch( e->button())
01255         {
01256         case LeftButton:
01257             button = Button1;
01258           break;
01259         case MidButton:
01260             button = Button2;
01261           break;
01262         case RightButton:
01263             button = Button3;
01264           break;
01265         default:
01266             return;
01267         }
01268     processDecorationButtonPress( button, e->state(), e->x(), e->y(), e->globalX(), e->globalY());
01269     }
01270 
01271 // return value matters only when filtering events before decoration gets them
01272 bool Client::buttonReleaseEvent( Window w, int /*button*/, int state, int x, int y, int x_root, int y_root )
01273     {
01274     if( w == decorationId() && !buttonDown)
01275         return false;
01276     if( w == wrapperId())
01277         {
01278         XAllowEvents(qt_xdisplay(), SyncPointer, CurrentTime ); //qt_x_time);
01279         return true;
01280         }
01281     if( w != frameId() && w != decorationId() && w != moveResizeGrabWindow())
01282         return true;
01283     x = this->x(); // translate from grab window to local coords
01284     y = this->y();
01285     if ( (state & ( Button1Mask & Button2Mask & Button3Mask )) == 0 )
01286         {
01287         buttonDown = FALSE;
01288         if ( moveResizeMode ) 
01289             {
01290             finishMoveResize( false );
01291             // mouse position is still relative to old Client position, adjust it
01292             QPoint mousepos( x_root - x, y_root - y );
01293             mode = mousePosition( mousepos );
01294             }
01295         setCursor( mode );
01296         }
01297     return true;
01298     }
01299 
01300 static bool was_motion = false;
01301 static Time next_motion_time = CurrentTime;
01302 // Check whole incoming X queue for MotionNotify events
01303 // checking whole queue is done by always returning False in the predicate.
01304 // If there are more MotionNotify events in the queue, all until the last
01305 // one may be safely discarded (if a ButtonRelease event comes, a MotionNotify
01306 // will be faked from it, so there's no need to check other events).
01307 // This helps avoiding being overloaded by being flooded from many events
01308 // from the XServer.
01309 static Bool motion_predicate( Display*, XEvent* ev, XPointer )
01310 {
01311     if( ev->type == MotionNotify )
01312         {
01313     was_motion = true;
01314         next_motion_time = ev->xmotion.time;  // for setting time
01315         }
01316     return False;
01317 }
01318 
01319 static bool waitingMotionEvent()
01320     {
01321 // The queue doesn't need to be checked until the X timestamp
01322 // of processes events reaches the timestamp of the last suitable
01323 // MotionNotify event in the queue.
01324     if( next_motion_time != CurrentTime
01325         && timestampCompare( qt_x_time, next_motion_time ) < 0 )
01326         return true;
01327     was_motion = false;
01328     XSync( qt_xdisplay(), False ); // this helps to discard more MotionNotify events
01329     XEvent dummy;
01330     XCheckIfEvent( qt_xdisplay(), &dummy, motion_predicate, NULL );
01331     return was_motion;
01332     }
01333 
01334 // return value matters only when filtering events before decoration gets them
01335 bool Client::motionNotifyEvent( Window w, int /*state*/, int x, int y, int x_root, int y_root )
01336     {
01337     if( w != frameId() && w != decorationId() && w != moveResizeGrabWindow())
01338         return true; // care only about the whole frame
01339     if ( !buttonDown ) 
01340         {
01341         Position newmode = mousePosition( QPoint( x, y ));
01342         if( newmode != mode )
01343             setCursor( newmode );
01344         mode = newmode;
01345         // reset the timestamp for the optimization, otherwise with long passivity
01346         // the option in waitingMotionEvent() may be always true
01347         next_motion_time = CurrentTime;
01348         return false;
01349         }
01350     if( w == moveResizeGrabWindow())
01351         {
01352         x = this->x(); // translate from grab window to local coords
01353         y = this->y();
01354         }
01355     if( !waitingMotionEvent())
01356         handleMoveResize( x, y, x_root, y_root );
01357     return true;
01358     }
01359     
01360 void Client::focusInEvent( XFocusInEvent* e )
01361     {
01362     if( e->window != window())
01363         return; // only window gets focus
01364     if ( e->mode == NotifyUngrab )
01365         return; // we don't care
01366     if ( e->detail == NotifyPointer )
01367         return;  // we don't care
01368     if( !isShown( false ) || !isOnCurrentDesktop()) // we unmapped it, but it got focus meanwhile ->
01369         return;            // activateNextClient() already transferred focus elsewhere
01370     // check if this client is in should_get_focus list or if activation is allowed
01371     bool activate =  workspace()->allowClientActivation( this, -1U, true );
01372     workspace()->gotFocusIn( this ); // remove from should_get_focus list
01373     if( activate )
01374         setActive( TRUE );
01375     else
01376         {
01377         workspace()->restoreFocus();
01378         demandAttention();
01379         }
01380     }
01381 
01382 // When a client loses focus, FocusOut events are usually immediatelly
01383 // followed by FocusIn events for another client that gains the focus
01384 // (unless the focus goes to another screen, or to the nofocus widget).
01385 // Without this check, the former focused client would have to be
01386 // deactivated, and after that, the new one would be activated, with
01387 // a short time when there would be no active client. This can cause
01388 // flicker sometimes, e.g. when a fullscreen is shown, and focus is transferred
01389 // from it to its transient, the fullscreen would be kept in the Active layer
01390 // at the beginning and at the end, but not in the middle, when the active
01391 // client would be temporarily none (see Client::belongToLayer() ).
01392 // Therefore, the events queue is checked, whether it contains the matching
01393 // FocusIn event, and if yes, deactivation of the previous client will
01394 // be skipped, as activation of the new one will automatically deactivate
01395 // previously active client.
01396 static bool follows_focusin = false;
01397 static bool follows_focusin_failed = false;
01398 static Bool predicate_follows_focusin( Display*, XEvent* e, XPointer arg )
01399     {
01400     if( follows_focusin || follows_focusin_failed )
01401         return False;
01402     Client* c = ( Client* ) arg;
01403     if( e->type == FocusIn && c->workspace()->findClient( WindowMatchPredicate( e->xfocus.window )))
01404         { // found FocusIn
01405         follows_focusin = true;
01406         return False;
01407         }
01408     // events that may be in the queue before the FocusIn event that's being
01409     // searched for
01410     if( e->type == FocusIn || e->type == FocusOut || e->type == KeymapNotify )
01411         return False;
01412     follows_focusin_failed = true; // a different event - stop search
01413     return False;
01414     }
01415 
01416 static bool check_follows_focusin( Client* c )
01417     {
01418     follows_focusin = follows_focusin_failed = false;
01419     XEvent dummy;
01420     // XCheckIfEvent() is used to make the search non-blocking, the predicate
01421     // always returns False, so nothing is removed from the events queue.
01422     // XPeekIfEvent() would block.
01423     XCheckIfEvent( qt_xdisplay(), &dummy, predicate_follows_focusin, (XPointer)c );
01424     return follows_focusin;
01425     }
01426 
01427 
01428 void Client::focusOutEvent( XFocusOutEvent* e )
01429     {
01430     if( e->window != window())
01431         return; // only window gets focus
01432     if ( e->mode == NotifyGrab )
01433         return; // we don't care
01434     if ( isShade() )
01435         return; // here neither
01436     if ( e->detail != NotifyNonlinear
01437         && e->detail != NotifyNonlinearVirtual )
01438         // SELI check all this
01439         return; // hack for motif apps like netscape
01440     if ( QApplication::activePopupWidget() )
01441         return;
01442     if( !check_follows_focusin( this ))
01443         setActive( FALSE );
01444     }
01445 
01446 // performs _NET_WM_MOVERESIZE
01447 void Client::NETMoveResize( int x_root, int y_root, NET::Direction direction )
01448     {
01449     if( direction == NET::Move )
01450         performMouseCommand( Options::MouseMove, QPoint( x_root, y_root ));
01451     else if( moveResizeMode && direction == NET::MoveResizeCancel )
01452     {
01453         finishMoveResize( true );
01454         buttonDown = FALSE;
01455         setCursor( mode );
01456     }
01457     else if( direction >= NET::TopLeft && direction <= NET::Left ) 
01458         {
01459         static const Position convert[] =
01460             {
01461             PositionTopLeft,
01462             PositionTop,
01463             PositionTopRight,
01464             PositionRight,
01465             PositionBottomRight,
01466             PositionBottom,
01467             PositionBottomLeft,
01468             PositionLeft
01469             };
01470         if(!isResizable() || isShade())
01471             return;
01472         if( moveResizeMode )
01473             finishMoveResize( false );
01474         buttonDown = TRUE;
01475         moveOffset = QPoint( x_root - x(), y_root - y()); // map from global
01476         invertedMoveOffset = rect().bottomRight() - moveOffset;
01477         unrestrictedMoveResize = false;
01478         mode = convert[ direction ];
01479         setCursor( mode );
01480         if( !startMoveResize())
01481             {
01482             buttonDown = false;
01483             setCursor( mode );
01484             }
01485         }
01486     else if( direction == NET::KeyboardMove )
01487         { // ignore mouse coordinates given in the message, mouse position is used by the moving algorithm
01488         QCursor::setPos( geometry().center() );
01489         performMouseCommand( Options::MouseUnrestrictedMove, geometry().center());
01490         }
01491     else if( direction == NET::KeyboardSize )
01492         { // ignore mouse coordinates given in the message, mouse position is used by the resizing algorithm
01493         QCursor::setPos( geometry().bottomRight());
01494         performMouseCommand( Options::MouseUnrestrictedResize, geometry().bottomRight());
01495         }
01496     }
01497 
01498 void Client::keyPressEvent( uint key_code )
01499     {
01500     updateUserTime();
01501     if ( !isMove() && !isResize() )
01502         return;
01503     bool is_control = key_code & Qt::CTRL;
01504     bool is_alt = key_code & Qt::ALT;
01505     key_code = key_code & 0xffff;
01506     int delta = is_control?1:is_alt?32:8;
01507     QPoint pos = QCursor::pos();
01508     switch ( key_code ) 
01509         {
01510         case Key_Left:
01511             pos.rx() -= delta;
01512             break;
01513         case Key_Right:
01514             pos.rx() += delta;
01515             break;
01516         case Key_Up:
01517             pos.ry() -= delta;
01518             break;
01519         case Key_Down:
01520             pos.ry() += delta;
01521             break;
01522         case Key_Space:
01523         case Key_Return:
01524         case Key_Enter:
01525             finishMoveResize( false );
01526             buttonDown = FALSE;
01527             setCursor( mode );
01528             break;
01529         case Key_Escape:
01530             finishMoveResize( true );
01531             buttonDown = FALSE;
01532             setCursor( mode );
01533             break;
01534         default:
01535             return;
01536         }
01537     QCursor::setPos( pos );
01538     }
01539 
01540 // ****************************************
01541 // Group
01542 // ****************************************
01543 
01544 bool Group::groupEvent( XEvent* e )
01545     {
01546     unsigned long dirty[ 2 ];
01547     leader_info->event( e, dirty, 2 ); // pass through the NET stuff
01548     if ( ( dirty[ WinInfo::PROTOCOLS ] & NET::WMIcon) != 0 )
01549         getIcons();
01550     if(( dirty[ WinInfo::PROTOCOLS2 ] & NET::WM2StartupId ) != 0 )
01551         startupIdChanged();
01552     return false;
01553     }
01554 
01555 
01556 } // namespace
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