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         case MappingNotify:
00455             XRefreshKeyboardMapping( &e->xmapping );
00456             tab_box->updateKeyMapping();
00457             break;
00458         default:
00459             break;
00460         }
00461     return FALSE;
00462     }
00463 
00464 // Some events don't have the actual window which caused the event
00465 // as e->xany.window (e.g. ConfigureRequest), but as some other
00466 // field in the XEvent structure.
00467 Window Workspace::findSpecialEventWindow( XEvent* e )
00468     {
00469     switch( e->type )
00470         {
00471         case CreateNotify:
00472             return e->xcreatewindow.window;
00473         case DestroyNotify:
00474             return e->xdestroywindow.window;
00475         case UnmapNotify:
00476             return e->xunmap.window;
00477         case MapNotify:
00478             return e->xmap.window;
00479         case MapRequest:
00480             return e->xmaprequest.window;
00481         case ReparentNotify:
00482             return e->xreparent.window;
00483         case ConfigureNotify:
00484             return e->xconfigure.window;
00485         case GravityNotify:
00486             return e->xgravity.window;
00487         case ConfigureRequest:
00488             return e->xconfigurerequest.window;
00489         case CirculateNotify:
00490             return e->xcirculate.window;
00491         case CirculateRequest:
00492             return e->xcirculaterequest.window;
00493         default:
00494             return None;
00495         };
00496     }
00497 
00501 bool Workspace::netCheck( XEvent* e )
00502     {
00503     unsigned int dirty = rootInfo->event( e );
00504 
00505     if ( dirty & NET::DesktopNames )
00506         saveDesktopSettings();
00507 
00508     return dirty != 0;
00509     }
00510 
00511 
00512 // ****************************************
00513 // Client
00514 // ****************************************
00515 
00519 bool Client::windowEvent( XEvent* e )
00520     {
00521     if( e->xany.window == window()) // avoid doing stuff on frame or wrapper
00522         {
00523         unsigned long dirty[ 2 ];
00524         info->event( e, dirty, 2 ); // pass through the NET stuff
00525 
00526         if ( ( dirty[ WinInfo::PROTOCOLS ] & NET::WMName ) != 0 )
00527             fetchName();
00528         if ( ( dirty[ WinInfo::PROTOCOLS ] & NET::WMIconName ) != 0 )
00529             fetchIconicName();
00530         if ( ( dirty[ WinInfo::PROTOCOLS ] & NET::WMStrut ) != 0
00531             || ( dirty[ WinInfo::PROTOCOLS2 ] & NET::WM2ExtendedStrut ) != 0 )
00532             {
00533             if( isTopMenu())  // the fallback mode of KMenuBar may alter the strut
00534                 checkWorkspacePosition();  // restore it
00535             workspace()->updateClientArea();
00536             }
00537         if ( ( dirty[ WinInfo::PROTOCOLS ] & NET::WMIcon) != 0 )
00538             getIcons();
00539         // Note there's a difference between userTime() and info->userTime()
00540         // info->userTime() is the value of the property, userTime() also includes
00541         // updates of the time done by KWin (ButtonPress on windowrapper etc.).
00542         if(( dirty[ WinInfo::PROTOCOLS2 ] & NET::WM2UserTime ) != 0 )
00543             {
00544             workspace()->setWasUserInteraction();
00545             updateUserTime( info->userTime());
00546             }
00547         if(( dirty[ WinInfo::PROTOCOLS2 ] & NET::WM2StartupId ) != 0 )
00548             startupIdChanged();
00549         if( dirty[ WinInfo::PROTOCOLS ] & NET::WMIconGeometry )
00550             {
00551             if( demandAttentionKNotifyTimer != NULL )
00552                 demandAttentionKNotify();
00553             }
00554         }
00555 
00556 // TODO move all focus handling stuff to separate file?
00557     switch (e->type) 
00558         {
00559         case UnmapNotify:
00560             unmapNotifyEvent( &e->xunmap );
00561             break;
00562         case DestroyNotify:
00563             destroyNotifyEvent( &e->xdestroywindow );
00564             break;
00565         case MapRequest:
00566             // this one may pass the event to workspace
00567             return mapRequestEvent( &e->xmaprequest );
00568         case ConfigureRequest:
00569             configureRequestEvent( &e->xconfigurerequest );
00570             break;
00571         case PropertyNotify:
00572             propertyNotifyEvent( &e->xproperty );
00573             break;
00574         case KeyPress:
00575             updateUserTime();
00576             workspace()->setWasUserInteraction();
00577             break;
00578         case ButtonPress:
00579             updateUserTime();
00580             workspace()->setWasUserInteraction();
00581             buttonPressEvent( e->xbutton.window, e->xbutton.button, e->xbutton.state,
00582                 e->xbutton.x, e->xbutton.y, e->xbutton.x_root, e->xbutton.y_root );
00583             break;
00584         case KeyRelease:
00585     // don't update user time on releases
00586     // e.g. if the user presses Alt+F2, the Alt release
00587     // would appear as user input to the currently active window
00588             break;
00589         case ButtonRelease:
00590     // don't update user time on releases
00591     // e.g. if the user presses Alt+F2, the Alt release
00592     // would appear as user input to the currently active window
00593             buttonReleaseEvent( e->xbutton.window, e->xbutton.button, e->xbutton.state,
00594                 e->xbutton.x, e->xbutton.y, e->xbutton.x_root, e->xbutton.y_root );
00595             break;
00596         case MotionNotify:
00597             motionNotifyEvent( e->xmotion.window, e->xmotion.state,
00598                 e->xmotion.x, e->xmotion.y, e->xmotion.x_root, e->xmotion.y_root );
00599             break;
00600         case EnterNotify:
00601             enterNotifyEvent( &e->xcrossing );
00602             // MotionNotify is guaranteed to be generated only if the mouse
00603             // move start and ends in the window; for cases when it only
00604             // starts or only ends there, Enter/LeaveNotify are generated.
00605             // Fake a MotionEvent in such cases to make handle of mouse
00606             // events simpler (Qt does that too).
00607             motionNotifyEvent( e->xcrossing.window, e->xcrossing.state,
00608                 e->xcrossing.x, e->xcrossing.y, e->xcrossing.x_root, e->xcrossing.y_root );
00609             break;
00610         case LeaveNotify:
00611             motionNotifyEvent( e->xcrossing.window, e->xcrossing.state,
00612                 e->xcrossing.x, e->xcrossing.y, e->xcrossing.x_root, e->xcrossing.y_root );
00613             leaveNotifyEvent( &e->xcrossing );
00614             break;
00615         case FocusIn:
00616             focusInEvent( &e->xfocus );
00617             break;
00618         case FocusOut:
00619             focusOutEvent( &e->xfocus );
00620             break;
00621         case ReparentNotify:
00622             break;
00623         case ClientMessage:
00624             clientMessageEvent( &e->xclient );
00625             break;
00626         case ColormapChangeMask:
00627             if( e->xany.window == window())
00628             {
00629             cmap = e->xcolormap.colormap;
00630             if ( isActive() )
00631                 workspace()->updateColormap();
00632             }
00633             break;
00634         case VisibilityNotify:
00635             visibilityNotifyEvent( &e->xvisibility );
00636             break;
00637         default:
00638             if( e->xany.window == window())
00639             {
00640             if( e->type == Shape::shapeEvent() )
00641                 {
00642                 is_shape = Shape::hasShape( window()); // workaround for #19644
00643                 updateShape();
00644                 }
00645             }
00646             break;
00647         }
00648     return true; // eat all events
00649     }
00650 
00654 bool Client::mapRequestEvent( XMapRequestEvent* e )
00655     {
00656     if( e->window != window())
00657         {
00658         // Special support for the save-set feature, which is a bit broken.
00659         // If there's a window from one client embedded in another one,
00660         // e.g. using XEMBED, and the embedder suddenly looses its X connection,
00661         // save-set will reparent the embedded window to its closest ancestor
00662         // that will remains. Unfortunately, with reparenting window managers,
00663         // this is not the root window, but the frame (or in KWin's case,
00664         // it's the wrapper for the client window). In this case,
00665         // the wrapper will get ReparentNotify for a window it won't know,
00666         // which will be ignored, and then it gets MapRequest, as save-set
00667         // always maps. Returning true here means that Workspace::workspaceEvent()
00668         // will handle this MapRequest and manage this window (i.e. act as if
00669         // it was reparented to root window).
00670         if( e->parent == wrapperId())
00671             return false;
00672         return true; // no messing with frame etc.
00673         }
00674     if( isTopMenu() && workspace()->managingTopMenus())
00675         return true; // kwin controls these
00676     switch ( mappingState() )
00677         {
00678         case WithdrawnState:
00679             assert( false ); // WMs are not supposed to manage clients in Withdrawn state,
00680 //        manage();      // after initial mapping manage() is called from createClient()
00681             break;
00682         case IconicState:
00683     // also copied in clientMessage()
00684             if( isMinimized())
00685                 unminimize();
00686             if( isShade())
00687                 setShade( ShadeNone );
00688             if( !isOnCurrentDesktop())
00689                 {
00690                 if( workspace()->allowClientActivation( this ))
00691                     workspace()->activateClient( this );
00692                 else
00693                     demandAttention();
00694                 }
00695             break;
00696         case NormalState:
00697         // TODO fake MapNotify?
00698             break;
00699         }
00700     return true;
00701     }
00702 
00706 void Client::unmapNotifyEvent( XUnmapEvent* e )
00707     {
00708     if( e->window != window())
00709         return;
00710     if( e->event != wrapperId())
00711         { // most probably event from root window when initially reparenting
00712         bool ignore = true;
00713         if( e->event == workspace()->rootWin() && e->send_event )
00714             ignore = false; // XWithdrawWindow()
00715         if( ignore )
00716             return;
00717         }
00718     switch( mappingState())
00719         {
00720         case IconicState:
00721             releaseWindow();
00722           return;
00723         case NormalState:
00724             // maybe we will be destroyed soon. Check this first.
00725             XEvent ev;
00726             if( XCheckTypedWindowEvent (qt_xdisplay(), window(),
00727                 DestroyNotify, &ev) ) // TODO I don't like this much
00728                 {
00729                 destroyClient(); // deletes this
00730                 return;
00731                 }
00732             releaseWindow();
00733           break;
00734     default:
00735         assert( false );
00736         }
00737     }
00738 
00739 void Client::destroyNotifyEvent( XDestroyWindowEvent* e )
00740     {
00741     if( e->window != window())
00742         return;
00743     destroyClient();
00744     }
00745     
00746     
00747 bool         blockAnimation = FALSE;
00748 
00752 void Client::clientMessageEvent( XClientMessageEvent* e )
00753     {
00754     if( e->window != window())
00755         return; // ignore frame/wrapper
00756     // WM_STATE
00757     if ( e->message_type == atoms->kde_wm_change_state )
00758         {
00759         if( isTopMenu() && workspace()->managingTopMenus())
00760             return; // kwin controls these
00761         if( e->data.l[ 1 ] )
00762             blockAnimation = true;
00763         if( e->data.l[ 0 ] == IconicState )
00764             minimize();
00765         else if( e->data.l[ 0 ] == NormalState )
00766             { // copied from mapRequest()
00767             if( isMinimized())
00768                 unminimize();
00769             if( isShade())
00770                 setShade( ShadeNone );
00771             if( !isOnCurrentDesktop())
00772                 {
00773                 if( workspace()->allowClientActivation( this ))
00774                     workspace()->activateClient( this );
00775                 else
00776                     demandAttention();
00777                 }
00778             }
00779         blockAnimation = false;
00780         }
00781     else if ( e->message_type == atoms->wm_change_state)
00782         {
00783         if( isTopMenu() && workspace()->managingTopMenus())
00784             return; // kwin controls these
00785         if ( e->data.l[0] == IconicState )
00786             minimize();
00787         return;
00788         }
00789     }
00790 
00791 
00795 void Client::configureRequestEvent( XConfigureRequestEvent* e )
00796     {
00797     if( e->window != window())
00798         return; // ignore frame/wrapper
00799     if ( isResize() || isMove())
00800         return; // we have better things to do right now
00801 
00802     if( fullscreen_mode == FullScreenNormal ) // refuse resizing of fullscreen windows
00803         { // but allow resizing fullscreen hacks in order to let them cancel fullscreen mode
00804         sendSyntheticConfigureNotify();
00805         return;
00806         }
00807     if( isSplash() // no manipulations with splashscreens either
00808         || isTopMenu()) // topmenus neither
00809         {
00810         sendSyntheticConfigureNotify();
00811         return;
00812         }
00813 
00814     if ( e->value_mask & CWBorderWidth ) 
00815         {
00816         // first, get rid of a window border
00817         XWindowChanges wc;
00818         unsigned int value_mask = 0;
00819 
00820         wc.border_width = 0;
00821         value_mask = CWBorderWidth;
00822         XConfigureWindow( qt_xdisplay(), window(), value_mask, & wc );
00823         }
00824 
00825     if( e->value_mask & ( CWX | CWY | CWHeight | CWWidth ))
00826         configureRequest( e->value_mask, e->x, e->y, e->width, e->height, 0, false );
00827 
00828     if ( e->value_mask & CWStackMode )
00829         restackWindow( e->above, e->detail, NET::FromApplication, userTime(), false );
00830 
00831     // TODO sending a synthetic configure notify always is fine, even in cases where
00832     // the ICCCM doesn't require this - it can be though of as 'the WM decided to move
00833     // the window later'. The client should not cause that many configure request,
00834     // so this should not have any significant impact. With user moving/resizing
00835     // the it should be optimized though (see also Client::setGeometry()/plainResize()/move()).
00836     sendSyntheticConfigureNotify();
00837 
00838     // SELI TODO accept configure requests for isDesktop windows (because kdesktop
00839     // may get XRANDR resize event before kwin), but check it's still at the bottom?
00840     }
00841 
00842 
00846 void Client::propertyNotifyEvent( XPropertyEvent* e )
00847     {
00848     if( e->window != window())
00849         return; // ignore frame/wrapper
00850     switch ( e->atom ) 
00851         {
00852         case XA_WM_NORMAL_HINTS:
00853             getWmNormalHints();
00854             break;
00855         case XA_WM_NAME:
00856             fetchName();
00857             break;
00858         case XA_WM_ICON_NAME:
00859             fetchIconicName();
00860             break;
00861         case XA_WM_TRANSIENT_FOR:
00862             readTransient();
00863             break;
00864         case XA_WM_HINTS:
00865             getWMHints();
00866             getIcons(); // because KWin::icon() uses WMHints as fallback
00867             break;
00868         default:
00869             if ( e->atom == atoms->wm_protocols )
00870                 getWindowProtocols();
00871             else if (e->atom == atoms->wm_client_leader )
00872                 getWmClientLeader();
00873             else if( e->atom == qt_window_role )
00874                 window_role = staticWindowRole( window());
00875             else if( e->atom == atoms->motif_wm_hints )
00876                 getMotifHints();
00877             break;
00878         }
00879     }
00880 
00881 
00882 void Client::enterNotifyEvent( XCrossingEvent* e )
00883     {
00884     if( e->window != frameId())
00885         return; // care only about entering the whole frame
00886     if( e->mode == NotifyNormal ||
00887          ( !options->focusPolicyIsReasonable() &&
00888              e->mode == NotifyUngrab ) ) 
00889         {
00890 
00891         if (options->shadeHover && isShade()) 
00892             {
00893             delete shadeHoverTimer;
00894             shadeHoverTimer = new QTimer( this );
00895             connect( shadeHoverTimer, SIGNAL( timeout() ), this, SLOT( shadeHover() ));
00896             shadeHoverTimer->start( options->shadeHoverInterval, TRUE );
00897             }
00898 
00899         if ( options->focusPolicy == Options::ClickToFocus )
00900             return;
00901 
00902         if ( options->autoRaise && !isDesktop() &&
00903              !isDock() && !isTopMenu() && workspace()->focusChangeEnabled() &&
00904              workspace()->topClientOnDesktop( workspace()->currentDesktop()) != this ) 
00905             {
00906             delete autoRaiseTimer;
00907             autoRaiseTimer = new QTimer( this );
00908             connect( autoRaiseTimer, SIGNAL( timeout() ), this, SLOT( autoRaise() ) );
00909             autoRaiseTimer->start( options->autoRaiseInterval, TRUE  );
00910             }
00911 
00912         if ( options->focusPolicy !=  Options::FocusStrictlyUnderMouse && ( isDesktop() || isDock() || isTopMenu() ) )
00913             return;
00914         if ( options->delayFocus )
00915             workspace()->requestDelayFocus( this );
00916         else
00917             workspace()->requestFocus( this );
00918 
00919         return;
00920         }
00921     }
00922 
00923 void Client::leaveNotifyEvent( XCrossingEvent* e )
00924     {
00925     if( e->window != frameId())
00926         return; // care only about leaving the whole frame
00927     if ( e->mode == NotifyNormal ) 
00928         {
00929         if ( !buttonDown ) 
00930             {
00931             mode = PositionCenter;
00932             setCursor( arrowCursor );
00933             }
00934         bool lostMouse = !rect().contains( QPoint( e->x, e->y ) );
00935         // 'lostMouse' wouldn't work with e.g. B2 or Keramik, which have non-rectangular decorations
00936         // (i.e. the LeaveNotify event comes before leaving the rect and no LeaveNotify event
00937         // comes after leaving the rect) - so lets check if the pointer is really outside the window
00938 
00939         // TODO this still sucks if a window appears above this one - it should lose the mouse
00940         // if this window is another client, but not if it's a popup ... maybe after KDE3.1 :(
00941         // (repeat after me 'AARGHL!')
00942         if ( !lostMouse && e->detail != NotifyInferior ) 
00943             {
00944             int d1, d2, d3, d4;
00945             unsigned int d5;
00946             Window w, child;
00947             if( XQueryPointer( qt_xdisplay(), frameId(), &w, &child, &d1, &d2, &d3, &d4, &d5 ) == False
00948                 || child == None )
00949                 lostMouse = true; // really lost the mouse
00950             }
00951         if ( lostMouse ) 
00952             {
00953             cancelAutoRaise();
00954             workspace()->cancelDelayFocus();
00955             cancelShadeHover();
00956             if ( shade_mode == ShadeHover && !moveResizeMode && !buttonDown )
00957                setShade( ShadeNormal );
00958             }
00959         if ( options->focusPolicy == Options::FocusStrictlyUnderMouse )
00960             if ( isActive() && lostMouse )
00961                 workspace()->requestFocus( 0 ) ;
00962         return;
00963         }
00964     }
00965 
00966 #define XCapL KKeyNative::modXLock()
00967 #define XNumL KKeyNative::modXNumLock()
00968 #define XScrL KKeyNative::modXScrollLock()
00969 void Client::grabButton( int modifier )
00970     {
00971     unsigned int mods[ 8 ] = 
00972         {
00973         0, XCapL, XNumL, XNumL | XCapL,
00974         XScrL, XScrL | XCapL,
00975         XScrL | XNumL, XScrL | XNumL | XCapL
00976         };
00977     for( int i = 0;
00978          i < 8;
00979          ++i )
00980         XGrabButton( qt_xdisplay(), AnyButton,
00981             modifier | mods[ i ],
00982             wrapperId(),  FALSE, ButtonPressMask,
00983             GrabModeSync, GrabModeAsync, None, None );
00984     }
00985 
00986 void Client::ungrabButton( int modifier )
00987     {
00988     unsigned int mods[ 8 ] = 
00989         {
00990         0, XCapL, XNumL, XNumL | XCapL,
00991         XScrL, XScrL | XCapL,
00992         XScrL | XNumL, XScrL | XNumL | XCapL
00993         };
00994     for( int i = 0;
00995          i < 8;
00996          ++i )
00997         XUngrabButton( qt_xdisplay(), AnyButton,
00998             modifier | mods[ i ], wrapperId());
00999     }
01000 #undef XCapL
01001 #undef XNumL
01002 #undef XScrL
01003 
01004 /*
01005   Releases the passive grab for some modifier combinations when a
01006   window becomes active. This helps broken X programs that
01007   missinterpret LeaveNotify events in grab mode to work properly
01008   (Motif, AWT, Tk, ...)
01009  */
01010 void Client::updateMouseGrab()
01011     {
01012     if( workspace()->globalShortcutsDisabled())
01013         {
01014         XUngrabButton( qt_xdisplay(), AnyButton, AnyModifier, wrapperId());
01015         // keep grab for the simple click without modifiers if needed
01016         if( !( !options->clickRaise || not_obscured ))
01017             grabButton( None );
01018         return;
01019         }
01020     if( isActive() && !workspace()->forcedGlobalMouseGrab()) // see Workspace::establishTabBoxGrab()
01021         {
01022         // remove the grab for no modifiers only if the window
01023         // is unobscured or if the user doesn't want click raise
01024         if( !options->clickRaise || not_obscured )
01025             ungrabButton( None );
01026         else
01027             grabButton( None );
01028         ungrabButton( ShiftMask );
01029         ungrabButton( ControlMask );
01030         ungrabButton( ControlMask | ShiftMask );
01031         }
01032     else
01033         {
01034         XUngrabButton( qt_xdisplay(), AnyButton, AnyModifier, wrapperId());
01035         // simply grab all modifier combinations
01036         XGrabButton(qt_xdisplay(), AnyButton, AnyModifier, wrapperId(), FALSE,
01037             ButtonPressMask,
01038             GrabModeSync, GrabModeAsync,
01039             None, None );
01040         }
01041     }
01042 
01043 int qtToX11Button( Qt::ButtonState button )
01044     {
01045     if( button == Qt::LeftButton )
01046         return Button1;
01047     else if( button == Qt::MidButton )
01048         return Button2;
01049     else if( button == Qt::RightButton )
01050         return Button3;
01051     return AnyButton;
01052     }
01053     
01054 int qtToX11State( Qt::ButtonState state )
01055     {
01056     int ret = 0;
01057     if( state & Qt::LeftButton )
01058         ret |= Button1Mask;
01059     if( state & Qt::MidButton )
01060         ret |= Button2Mask;
01061     if( state & Qt::RightButton )
01062         ret |= Button3Mask;
01063     if( state & Qt::ShiftButton )
01064         ret |= ShiftMask;
01065     if( state & Qt::ControlButton )
01066         ret |= ControlMask;
01067     if( state & Qt::AltButton )
01068         ret |= KKeyNative::modX(KKey::ALT);
01069     if( state & Qt::MetaButton )
01070         ret |= KKeyNative::modX(KKey::WIN);
01071     return ret;
01072     }
01073 
01074 // Qt propagates mouse events up the widget hierachy, which means events
01075 // for the decoration window cannot be (easily) intercepted as X11 events
01076 bool Client::eventFilter( QObject* o, QEvent* e )
01077     {
01078     if( decoration == NULL
01079         || o != decoration->widget())
01080         return false;
01081     if( e->type() == QEvent::MouseButtonPress )
01082         {
01083         QMouseEvent* ev = static_cast< QMouseEvent* >( e );
01084         return buttonPressEvent( decorationId(), qtToX11Button( ev->button()), qtToX11State( ev->state()),
01085             ev->x(), ev->y(), ev->globalX(), ev->globalY() );
01086         }
01087     if( e->type() == QEvent::MouseButtonRelease )
01088         {
01089         QMouseEvent* ev = static_cast< QMouseEvent* >( e );
01090         return buttonReleaseEvent( decorationId(), qtToX11Button( ev->button()), qtToX11State( ev->state()),
01091             ev->x(), ev->y(), ev->globalX(), ev->globalY() );
01092         }
01093     if( e->type() == QEvent::MouseMove ) // FRAME i fake z enter/leave?
01094         {
01095         QMouseEvent* ev = static_cast< QMouseEvent* >( e );
01096         return motionNotifyEvent( decorationId(), qtToX11State( ev->state()),
01097             ev->x(), ev->y(), ev->globalX(), ev->globalY() );
01098         }
01099     if( e->type() == QEvent::Wheel )
01100         {
01101         QWheelEvent* ev = static_cast< QWheelEvent* >( e );
01102         bool r = buttonPressEvent( decorationId(), ev->delta() > 0 ? Button4 : Button5, qtToX11State( ev->state()),
01103             ev->x(), ev->y(), ev->globalX(), ev->globalY() );
01104         r = r || buttonReleaseEvent( decorationId(), ev->delta() > 0 ? Button4 : Button5, qtToX11State( ev->state()),
01105             ev->x(), ev->y(), ev->globalX(), ev->globalY() );
01106         return r;
01107         }
01108     if( e->type() == QEvent::Resize )
01109         {
01110         QResizeEvent* ev = static_cast< QResizeEvent* >( e );
01111         // Filter out resize events that inform about size different than frame size.
01112         // This will ensure that decoration->width() etc. and decoration->widget()->width() will be in sync.
01113         // These events only seem to be delayed events from initial resizing before show() was called
01114         // on the decoration widget.
01115         if( ev->size() != size())
01116             return true;
01117         }
01118     return false;
01119     }
01120 
01121 // return value matters only when filtering events before decoration gets them
01122 bool Client::buttonPressEvent( Window w, int button, int state, int x, int y, int x_root, int y_root )
01123     {
01124     if (buttonDown)
01125         {
01126         if( w == wrapperId())
01127             XAllowEvents(qt_xdisplay(), SyncPointer, CurrentTime ); //qt_x_time);
01128         return true;
01129         }
01130 
01131     if( w == wrapperId() || w == frameId() || w == decorationId())
01132         { // FRAME neco s tohohle by se melo zpracovat, nez to dostane dekorace
01133         updateUserTime();
01134         workspace()->setWasUserInteraction();
01135         uint keyModX = (options->keyCmdAllModKey() == Qt::Key_Meta) ?
01136             KKeyNative::modX(KKey::WIN) :
01137             KKeyNative::modX(KKey::ALT);
01138         bool bModKeyHeld = keyModX != 0 && ( state & KKeyNative::accelModMaskX()) == keyModX;
01139 
01140         if( isSplash()
01141             && button == Button1 && !bModKeyHeld )
01142             { // hide splashwindow if the user clicks on it
01143             hideClient( true );
01144             if( w == wrapperId())
01145                     XAllowEvents(qt_xdisplay(), SyncPointer, CurrentTime ); //qt_x_time);
01146             return true;
01147             }
01148 
01149         Options::MouseCommand com = Options::MouseNothing;
01150         bool was_action = false;
01151         bool perform_handled = false;
01152         if ( bModKeyHeld )
01153             {
01154             was_action = true;
01155             switch (button) 
01156                 {
01157                 case Button1:
01158                     com = options->commandAll1();
01159                     break;
01160                 case Button2:
01161                     com = options->commandAll2();
01162                     break;
01163                 case Button3:
01164                     com = options->commandAll3();
01165                     break;
01166                 case Button4:
01167                 case Button5:
01168                     com = options->operationWindowMouseWheel( button == Button4 ? 120 : -120 );
01169                     break;
01170                 }
01171             }
01172         else
01173             { // inactive inner window
01174             if( !isActive() && w == wrapperId())
01175                 {
01176                 was_action = true;
01177                 perform_handled = true;
01178                 switch (button) 
01179                     {
01180                     case Button1:
01181                         com = options->commandWindow1();
01182                         break;
01183                     case Button2:
01184                         com = options->commandWindow2();
01185                         break;
01186                     case Button3:
01187                         com = options->commandWindow3();
01188                         break;
01189                     default:
01190                         com = Options::MouseActivateAndPassClick;
01191                     }
01192                 }
01193             // active inner window
01194             if( isActive() && w == wrapperId()
01195                 && options->clickRaise && button < 4 ) // exclude wheel
01196                 {
01197                 com = Options::MouseActivateRaiseAndPassClick;
01198                 was_action = true;
01199                 perform_handled = true;
01200                 }
01201             }
01202         if( was_action )
01203             {
01204             bool replay = performMouseCommand( com, QPoint( x_root, y_root), perform_handled );
01205 
01206             if ( isSpecialWindow())
01207                 replay = TRUE;
01208 
01209             if( w == wrapperId()) // these can come only from a grab
01210                 XAllowEvents(qt_xdisplay(), replay? ReplayPointer : SyncPointer, CurrentTime ); //qt_x_time);
01211             return true;
01212             }
01213         }
01214 
01215     if( w == wrapperId()) // these can come only from a grab
01216         {
01217         XAllowEvents(qt_xdisplay(), ReplayPointer, CurrentTime ); //qt_x_time);
01218         return true;
01219         }
01220     if( w == decorationId())
01221         return false; // don't eat decoration events
01222     if( w == frameId())
01223         processDecorationButtonPress( button, state, x, y, x_root, y_root );
01224     return true;
01225     }
01226 
01227 
01228 // this function processes button press events only after decoration decides not to handle them,
01229 // unlike buttonPressEvent(), which (when the window is decoration) filters events before decoration gets them
01230 void Client::processDecorationButtonPress( int button, int /*state*/, int x, int y, int x_root, int y_root )
01231     {
01232     Options::MouseCommand com = Options::MouseNothing;
01233     bool active = isActive();
01234     if ( !wantsInput() ) // we cannot be active, use it anyway
01235         active = TRUE;
01236 
01237     if ( button == Button1 )
01238         com = active ? options->commandActiveTitlebar1() : options->commandInactiveTitlebar1();
01239     else if ( button == Button2 )
01240         com = active ? options->commandActiveTitlebar2() : options->commandInactiveTitlebar2();
01241     else if ( button == Button3 )
01242         com = active ? options->commandActiveTitlebar3() : options->commandInactiveTitlebar3();
01243     if( button == Button1
01244         && com != Options::MouseOperationsMenu // actions where it's not possible to get the matching
01245         && com != Options::MouseMinimize )  // mouse release event
01246         {
01247         mode = mousePosition( QPoint( x, y ));
01248         buttonDown = TRUE;
01249         moveOffset = QPoint( x, y );
01250         invertedMoveOffset = rect().bottomRight() - moveOffset;
01251         unrestrictedMoveResize = false;
01252         setCursor( mode ); // update to sizeAllCursor if about to move
01253         }
01254     performMouseCommand( com, QPoint( x_root, y_root ));
01255     }
01256 
01257 // called from decoration
01258 void Client::processMousePressEvent( QMouseEvent* e )
01259     {
01260     if( e->type() != QEvent::MouseButtonPress )
01261         {
01262         kdWarning() << "processMousePressEvent()" << endl;
01263         return;
01264         }
01265     int button;
01266     switch( e->button())
01267         {
01268         case LeftButton:
01269             button = Button1;
01270           break;
01271         case MidButton:
01272             button = Button2;
01273           break;
01274         case RightButton:
01275             button = Button3;
01276           break;
01277         default:
01278             return;
01279         }
01280     processDecorationButtonPress( button, e->state(), e->x(), e->y(), e->globalX(), e->globalY());
01281     }
01282 
01283 // return value matters only when filtering events before decoration gets them
01284 bool Client::buttonReleaseEvent( Window w, int /*button*/, int state, int x, int y, int x_root, int y_root )
01285     {
01286     if( w == decorationId() && !buttonDown)
01287         return false;
01288     if( w == wrapperId())
01289         {
01290         XAllowEvents(qt_xdisplay(), SyncPointer, CurrentTime ); //qt_x_time);
01291         return true;
01292         }
01293     if( w != frameId() && w != decorationId() && w != moveResizeGrabWindow())
01294         return true;
01295     x = this->x(); // translate from grab window to local coords
01296     y = this->y();
01297     if ( (state & ( Button1Mask & Button2Mask & Button3Mask )) == 0 )
01298         {
01299         buttonDown = FALSE;
01300         if ( moveResizeMode ) 
01301             {
01302             finishMoveResize( false );
01303             // mouse position is still relative to old Client position, adjust it
01304             QPoint mousepos( x_root - x, y_root - y );
01305             mode = mousePosition( mousepos );
01306             }
01307         setCursor( mode );
01308         }
01309     return true;
01310     }
01311 
01312 static bool was_motion = false;
01313 static Time next_motion_time = CurrentTime;
01314 // Check whole incoming X queue for MotionNotify events
01315 // checking whole queue is done by always returning False in the predicate.
01316 // If there are more MotionNotify events in the queue, all until the last
01317 // one may be safely discarded (if a ButtonRelease event comes, a MotionNotify
01318 // will be faked from it, so there's no need to check other events).
01319 // This helps avoiding being overloaded by being flooded from many events
01320 // from the XServer.
01321 static Bool motion_predicate( Display*, XEvent* ev, XPointer )
01322 {
01323     if( ev->type == MotionNotify )
01324         {
01325     was_motion = true;
01326         next_motion_time = ev->xmotion.time;  // for setting time
01327         }
01328     return False;
01329 }
01330 
01331 static bool waitingMotionEvent()
01332     {
01333 // The queue doesn't need to be checked until the X timestamp
01334 // of processes events reaches the timestamp of the last suitable
01335 // MotionNotify event in the queue.
01336     if( next_motion_time != CurrentTime
01337         && timestampCompare( qt_x_time, next_motion_time ) < 0 )
01338         return true;
01339     was_motion = false;
01340     XSync( qt_xdisplay(), False ); // this helps to discard more MotionNotify events
01341     XEvent dummy;
01342     XCheckIfEvent( qt_xdisplay(), &dummy, motion_predicate, NULL );
01343     return was_motion;
01344     }
01345 
01346 // return value matters only when filtering events before decoration gets them
01347 bool Client::motionNotifyEvent( Window w, int /*state*/, int x, int y, int x_root, int y_root )
01348     {
01349     if( w != frameId() && w != decorationId() && w != moveResizeGrabWindow())
01350         return true; // care only about the whole frame
01351     if ( !buttonDown ) 
01352         {
01353         Position newmode = mousePosition( QPoint( x, y ));
01354         if( newmode != mode )
01355             setCursor( newmode );
01356         mode = newmode;
01357         // reset the timestamp for the optimization, otherwise with long passivity
01358         // the option in waitingMotionEvent() may be always true
01359         next_motion_time = CurrentTime;
01360         return false;
01361         }
01362     if( w == moveResizeGrabWindow())
01363         {
01364         x = this->x(); // translate from grab window to local coords
01365         y = this->y();
01366         }
01367     if( !waitingMotionEvent())
01368         handleMoveResize( x, y, x_root, y_root );
01369     return true;
01370     }
01371     
01372 void Client::focusInEvent( XFocusInEvent* e )
01373     {
01374     if( e->window != window())
01375         return; // only window gets focus
01376     if ( e->mode == NotifyUngrab )
01377         return; // we don't care
01378     if ( e->detail == NotifyPointer )
01379         return;  // we don't care
01380     if( !isShown( false ) || !isOnCurrentDesktop()) // we unmapped it, but it got focus meanwhile ->
01381         return;            // activateNextClient() already transferred focus elsewhere
01382     // check if this client is in should_get_focus list or if activation is allowed
01383     bool activate =  workspace()->allowClientActivation( this, -1U, true );
01384     workspace()->gotFocusIn( this ); // remove from should_get_focus list
01385     if( activate )
01386         setActive( TRUE );
01387     else
01388         {
01389         workspace()->restoreFocus();
01390         demandAttention();
01391         }
01392     }
01393 
01394 // When a client loses focus, FocusOut events are usually immediatelly
01395 // followed by FocusIn events for another client that gains the focus
01396 // (unless the focus goes to another screen, or to the nofocus widget).
01397 // Without this check, the former focused client would have to be
01398 // deactivated, and after that, the new one would be activated, with
01399 // a short time when there would be no active client. This can cause
01400 // flicker sometimes, e.g. when a fullscreen is shown, and focus is transferred
01401 // from it to its transient, the fullscreen would be kept in the Active layer
01402 // at the beginning and at the end, but not in the middle, when the active
01403 // client would be temporarily none (see Client::belongToLayer() ).
01404 // Therefore, the events queue is checked, whether it contains the matching
01405 // FocusIn event, and if yes, deactivation of the previous client will
01406 // be skipped, as activation of the new one will automatically deactivate
01407 // previously active client.
01408 static bool follows_focusin = false;
01409 static bool follows_focusin_failed = false;
01410 static Bool predicate_follows_focusin( Display*, XEvent* e, XPointer arg )
01411     {
01412     if( follows_focusin || follows_focusin_failed )
01413         return False;
01414     Client* c = ( Client* ) arg;
01415     if( e->type == FocusIn && c->workspace()->findClient( WindowMatchPredicate( e->xfocus.window )))
01416         { // found FocusIn
01417         follows_focusin = true;
01418         return False;
01419         }
01420     // events that may be in the queue before the FocusIn event that's being
01421     // searched for
01422     if( e->type == FocusIn || e->type == FocusOut || e->type == KeymapNotify )
01423         return False;
01424     follows_focusin_failed = true; // a different event - stop search
01425     return False;
01426     }
01427 
01428 static bool check_follows_focusin( Client* c )
01429     {
01430     follows_focusin = follows_focusin_failed = false;
01431     XEvent dummy;
01432     // XCheckIfEvent() is used to make the search non-blocking, the predicate
01433     // always returns False, so nothing is removed from the events queue.
01434     // XPeekIfEvent() would block.
01435     XCheckIfEvent( qt_xdisplay(), &dummy, predicate_follows_focusin, (XPointer)c );
01436     return follows_focusin;
01437     }
01438 
01439 
01440 void Client::focusOutEvent( XFocusOutEvent* e )
01441     {
01442     if( e->window != window())
01443         return; // only window gets focus
01444     if ( e->mode == NotifyGrab )
01445         return; // we don't care
01446     if ( isShade() )
01447         return; // here neither
01448     if ( e->detail != NotifyNonlinear
01449         && e->detail != NotifyNonlinearVirtual )
01450         // SELI check all this
01451         return; // hack for motif apps like netscape
01452     if ( QApplication::activePopupWidget() )
01453         return;
01454     if( !check_follows_focusin( this ))
01455         setActive( FALSE );
01456     }
01457 
01458 void Client::visibilityNotifyEvent( XVisibilityEvent * e)
01459     {
01460     if( e->window != frameId())
01461         return; // care only about the whole frame
01462     bool new_not_obscured = e->state == VisibilityUnobscured;
01463     if( not_obscured == new_not_obscured )
01464         return;
01465     not_obscured = new_not_obscured;
01466     updateMouseGrab();
01467     }
01468 
01469 // performs _NET_WM_MOVERESIZE
01470 void Client::NETMoveResize( int x_root, int y_root, NET::Direction direction )
01471     {
01472     if( direction == NET::Move )
01473         performMouseCommand( Options::MouseMove, QPoint( x_root, y_root ));
01474     else if( moveResizeMode && direction == NET::MoveResizeCancel )
01475     {
01476         finishMoveResize( true );
01477         buttonDown = FALSE;
01478         setCursor( mode );
01479     }
01480     else if( direction >= NET::TopLeft && direction <= NET::Left ) 
01481         {
01482         static const Position convert[] =
01483             {
01484             PositionTopLeft,
01485             PositionTop,
01486             PositionTopRight,
01487             PositionRight,
01488             PositionBottomRight,
01489             PositionBottom,
01490             PositionBottomLeft,
01491             PositionLeft
01492             };
01493         if(!isResizable() || isShade())
01494             return;
01495         if( moveResizeMode )
01496             finishMoveResize( false );
01497         buttonDown = TRUE;
01498         moveOffset = QPoint( x_root - x(), y_root - y()); // map from global
01499         invertedMoveOffset = rect().bottomRight() - moveOffset;
01500         unrestrictedMoveResize = false;
01501         mode = convert[ direction ];
01502         setCursor( mode );
01503         if( !startMoveResize())
01504             {
01505             buttonDown = false;
01506             setCursor( mode );
01507             }
01508         }
01509     else if( direction == NET::KeyboardMove )
01510         { // ignore mouse coordinates given in the message, mouse position is used by the moving algorithm
01511         QCursor::setPos( geometry().center() );
01512         performMouseCommand( Options::MouseUnrestrictedMove, geometry().center());
01513         }
01514     else if( direction == NET::KeyboardSize )
01515         { // ignore mouse coordinates given in the message, mouse position is used by the resizing algorithm
01516         QCursor::setPos( geometry().bottomRight());
01517         performMouseCommand( Options::MouseUnrestrictedResize, geometry().bottomRight());
01518         }
01519     }
01520 
01521 void Client::keyPressEvent( uint key_code )
01522     {
01523     updateUserTime();
01524     if ( !isMove() && !isResize() )
01525         return;
01526     bool is_control = key_code & Qt::CTRL;
01527     bool is_alt = key_code & Qt::ALT;
01528     key_code = key_code & 0xffff;
01529     int delta = is_control?1:is_alt?32:8;
01530     QPoint pos = QCursor::pos();
01531     switch ( key_code ) 
01532         {
01533         case Key_Left:
01534             pos.rx() -= delta;
01535             break;
01536         case Key_Right:
01537             pos.rx() += delta;
01538             break;
01539         case Key_Up:
01540             pos.ry() -= delta;
01541             break;
01542         case Key_Down:
01543             pos.ry() += delta;
01544             break;
01545         case Key_Space:
01546         case Key_Return:
01547         case Key_Enter:
01548             finishMoveResize( false );
01549             buttonDown = FALSE;
01550             setCursor( mode );
01551             break;
01552         case Key_Escape:
01553             finishMoveResize( true );
01554             buttonDown = FALSE;
01555             setCursor( mode );
01556             break;
01557         default:
01558             return;
01559         }
01560     QCursor::setPos( pos );
01561     }
01562 
01563 // ****************************************
01564 // Group
01565 // ****************************************
01566 
01567 bool Group::groupEvent( XEvent* e )
01568     {
01569     unsigned long dirty[ 2 ];
01570     leader_info->event( e, dirty, 2 ); // pass through the NET stuff
01571     if ( ( dirty[ WinInfo::PROTOCOLS ] & NET::WMIcon) != 0 )
01572         getIcons();
01573     if(( dirty[ WinInfo::PROTOCOLS2 ] & NET::WM2StartupId ) != 0 )
01574         startupIdChanged();
01575     return false;
01576     }
01577 
01578 
01579 } // namespace
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