/***************************************************************** KWin - the KDE window manager This file is part of the KDE project. Copyright (C) 1999, 2000 Matthias Ettrich Copyright (C) 1997 to 2002 Cristian Tibirna Copyright (C) 2003 Lubos Lunak You can Freely distribute this program under the GNU General Public License. See the file "COPYING" for the exact licensing terms. ******************************************************************/ #include "placement.h" #include #include #ifndef KCMRULES #include "workspace.h" #include "client.h" #include "options.h" #include "rules.h" #endif namespace KWin { #ifndef KCMRULES Placement::Placement(Workspace* w) { m_WorkspacePtr = w; reinitCascading( 0 ); } /*! Places the client \a c according to the workspace's layout policy */ void Placement::place(Client* c, QRect& area ) { Policy policy = c->rules()->checkPlacement( Default ); if( policy != Default ) { place( c, area, policy ); return; } if( c->isUtility()) placeUtility(c, area, options->placement ); else if( c->isDialog()) placeDialog(c, area, options->placement ); else if( c->isSplash()) placeOnMainWindow( c, area ); // on mainwindow, if any, otherwise centered else place(c, area, options->placement); } void Placement::place(Client* c, QRect& area, Policy policy, Policy nextPlacement ) { if( policy == Unknown ) policy = Default; if( policy == Default ) policy = options->placement; if( policy == NoPlacement ) return; else if (policy == Random) placeAtRandom(c, area, nextPlacement); else if (policy == Cascade) placeCascaded(c, area, nextPlacement); else if (policy == Centered) placeCentered(c, area, nextPlacement); else if (policy == ZeroCornered) placeZeroCornered(c, area, nextPlacement); else if (policy == UnderMouse) placeUnderMouse(c, area, nextPlacement); else if (policy == OnMainWindow) placeOnMainWindow(c, area, nextPlacement); else if( policy == Maximizing ) placeMaximizing(c, area, nextPlacement); else placeSmart(c, area, nextPlacement); } /*! Place the client \a c according to a simply "random" placement algorithm. */ void Placement::placeAtRandom(Client* c, const QRect& area, Policy /*next*/ ) { const int step = 24; static int px = step; static int py = 2 * step; int tx,ty; const QRect maxRect = checkArea( c, area ); if (px < maxRect.x()) px = maxRect.x(); if (py < maxRect.y()) py = maxRect.y(); px += step; py += 2*step; if (px > maxRect.width()/2) px = maxRect.x() + step; if (py > maxRect.height()/2) py = maxRect.y() + step; tx = px; ty = py; if (tx + c->width() > maxRect.right()) { tx = maxRect.right() - c->width(); if (tx < 0) tx = 0; px = maxRect.x(); } if (ty + c->height() > maxRect.bottom()) { ty = maxRect.bottom() - c->height(); if (ty < 0) ty = 0; py = maxRect.y(); } c->move(tx, ty); } /*! Place the client \a c according to a really smart placement algorithm :-) */ void Placement::placeSmart(Client* c, const QRect& area, Policy /*next*/ ) { /* * SmartPlacement by Cristian Tibirna (tibirna@kde.org) * adapted for kwm (16-19jan98) and for kwin (16Nov1999) using (with * permission) ideas from fvwm, authored by * Anthony Martin (amartin@engr.csulb.edu). * Xinerama supported added by Balaji Ramani (balaji@yablibli.com) * with ideas from xfce. */ const int none = 0, h_wrong = -1, w_wrong = -2; // overlap types long int overlap, min_overlap = 0; int x_optimal, y_optimal; int possible; int desktop = c->desktop() == 0 || c->isOnAllDesktops() ? m_WorkspacePtr->currentDesktop() : c->desktop(); int cxl, cxr, cyt, cyb; //temp coords int xl, xr, yt, yb; //temp coords int basket; //temp holder // get the maximum allowed windows space const QRect maxRect = checkArea( c, area ); int x = maxRect.left(), y = maxRect.top(); x_optimal = x; y_optimal = y; //client gabarit int ch = c->height() - 1; int cw = c->width() - 1; bool first_pass = true; //CT lame flag. Don't like it. What else would do? //loop over possible positions do { //test if enough room in x and y directions if (y + ch > maxRect.bottom() && ch < maxRect.height()) overlap = h_wrong; // this throws the algorithm to an exit else if(x + cw > maxRect.right()) overlap = w_wrong; else { overlap = none; //initialize cxl = x; cxr = x + cw; cyt = y; cyb = y + ch; ClientList::ConstIterator l; for(l = m_WorkspacePtr->stackingOrder().begin(); l != m_WorkspacePtr->stackingOrder().end() ; ++l) { if((*l)->isOnDesktop(desktop) && (*l)->isShown( false ) && (*l) != c) { xl = (*l)->x(); yt = (*l)->y(); xr = xl + (*l)->width(); yb = yt + (*l)->height(); //if windows overlap, calc the overall overlapping if((cxl < xr) && (cxr > xl) && (cyt < yb) && (cyb > yt)) { xl = qMax(cxl, xl); xr = qMin(cxr, xr); yt = qMax(cyt, yt); yb = qMin(cyb, yb); if((*l)->keepAbove()) overlap += 16 * (xr - xl) * (yb - yt); else if((*l)->keepBelow() && !(*l)->isDock()) // ignore KeepBelow windows overlap += 0; // for placement (see Client::belongsToLayer() for Dock) else overlap += (xr - xl) * (yb - yt); } } } } //CT first time we get no overlap we stop. if (overlap == none) { x_optimal = x; y_optimal = y; break; } if (first_pass) { first_pass = false; min_overlap = overlap; } //CT save the best position and the minimum overlap up to now else if (overlap >= none && overlap < min_overlap) { min_overlap = overlap; x_optimal = x; y_optimal = y; } // really need to loop? test if there's any overlap if (overlap > none) { possible = maxRect.right(); if (possible - cw > x) possible -= cw; // compare to the position of each client on the same desk ClientList::ConstIterator l; for(l = m_WorkspacePtr->stackingOrder().begin(); l != m_WorkspacePtr->stackingOrder().end() ; ++l) { if ((*l)->isOnDesktop(desktop) && (*l)->isShown( false ) && (*l) != c) { xl = (*l)->x(); yt = (*l)->y(); xr = xl + (*l)->width(); yb = yt + (*l)->height(); // if not enough room above or under the current tested client // determine the first non-overlapped x position if((y < yb) && (yt < ch + y)) { if((xr > x) && (possible > xr)) possible = xr; basket = xl - cw; if((basket > x) && (possible > basket)) possible = basket; } } } x = possible; } // ... else ==> not enough x dimension (overlap was wrong on horizontal) else if (overlap == w_wrong) { x = maxRect.left(); possible = maxRect.bottom(); if (possible - ch > y) possible -= ch; //test the position of each window on the desk ClientList::ConstIterator l; for(l = m_WorkspacePtr->stackingOrder().begin(); l != m_WorkspacePtr->stackingOrder().end() ; ++l) { if((*l)->isOnDesktop(desktop) && (*l) != c && c->isShown( false )) { xl = (*l)->x(); yt = (*l)->y(); xr = xl + (*l)->width(); yb = yt + (*l)->height(); // if not enough room to the left or right of the current tested client // determine the first non-overlapped y position if((yb > y) && (possible > yb)) possible = yb; basket = yt - ch; if((basket > y) && (possible > basket)) possible = basket; } } y = possible; } } while((overlap != none) && (overlap != h_wrong) && (y < maxRect.bottom())); if(ch>= maxRect.height()) y_optimal=maxRect.top(); // place the window c->move(x_optimal, y_optimal); } void Placement::reinitCascading( int desktop ) { // desktop == 0 - reinit all if( desktop == 0 ) { cci.clear(); for( int i = 0; i < m_WorkspacePtr->numberOfDesktops(); i++) { DesktopCascadingInfo inf; inf.pos = QPoint(-1,-1); inf.col = 0; inf.row = 0; cci.append(inf); } } else { cci[desktop - 1].pos = QPoint(-1, -1); cci[desktop - 1].col = cci[desktop - 1].row = 0; } } /*! Place windows in a cascading order, remembering positions for each desktop */ void Placement::placeCascaded (Client* c, QRect& area, Policy nextPlacement) { /* cascadePlacement by Cristian Tibirna (tibirna@kde.org) (30Jan98) */ // work coords int xp, yp; //CT how do I get from the 'Client' class the size that NW squarish "handle" const int delta_x = 24; const int delta_y = 24; const int dn = c->desktop() == 0 || c->isOnAllDesktops() ? (m_WorkspacePtr->currentDesktop() - 1) : (c->desktop() - 1); // get the maximum allowed windows space and desk's origin QRect maxRect = checkArea( c, area ); // initialize often used vars: width and height of c; we gain speed const int ch = c->height(); const int cw = c->width(); const int X = maxRect.left(); const int Y = maxRect.top(); const int H = maxRect.height(); const int W = maxRect.width(); if( nextPlacement == Unknown ) nextPlacement = Smart; //initialize if needed if (cci[dn].pos.x() < 0 || cci[dn].pos.x() < X || cci[dn].pos.y() < Y ) { cci[dn].pos = QPoint(X, Y); cci[dn].col = cci[dn].row = 0; } xp = cci[dn].pos.x(); yp = cci[dn].pos.y(); //here to touch in case people vote for resize on placement if ((yp + ch) > H) yp = Y; if ((xp + cw) > W) if (!yp) { place(c,area,nextPlacement); return; } else xp = X; //if this isn't the first window if (cci[dn].pos.x() != X && cci[dn].pos.y() != Y) { /* The following statements cause an internal compiler error with * egcs-2.91.66 on SuSE Linux 6.3. The equivalent forms compile fine. * 22-Dec-1999 CS * * if (xp != X && yp == Y) xp = delta_x * (++(cci[dn].col)); * if (yp != Y && xp == X) yp = delta_y * (++(cci[dn].row)); */ if (xp != X && yp == Y) { ++(cci[dn].col); xp = delta_x * cci[dn].col; } if (yp != Y && xp == X) { ++(cci[dn].row); yp = delta_y * cci[dn].row; } // last resort: if still doesn't fit, smart place it if (((xp + cw) > W - X) || ((yp + ch) > H - Y)) { place(c,area,nextPlacement); return; } } // place the window c->move(QPoint(xp, yp)); // new position cci[dn].pos = QPoint(xp + delta_x, yp + delta_y); } /*! Place windows centered, on top of all others */ void Placement::placeCentered (Client* c, const QRect& area, Policy /*next*/ ) { // get the maximum allowed windows space and desk's origin const QRect maxRect = checkArea( c, area ); const int xp = maxRect.left() + (maxRect.width() - c->width()) / 2; const int yp = maxRect.top() + (maxRect.height() - c->height()) / 2; // place the window c->move(QPoint(xp, yp)); } /*! Place windows in the (0,0) corner, on top of all others */ void Placement::placeZeroCornered(Client* c, const QRect& area, Policy /*next*/ ) { // get the maximum allowed windows space and desk's origin const QRect maxRect = checkArea( c, area ); // place the window c->move(QPoint(maxRect.left(), maxRect.top())); } void Placement::placeUtility(Client* c, QRect& area, Policy /*next*/ ) { // TODO kwin should try to place utility windows next to their mainwindow, // preferably at the right edge, and going down if there are more of them // if there's not enough place outside the mainwindow, it should prefer // top-right corner // use the default placement for now place( c, area, Default ); } void Placement::placeDialog(Client* c, QRect& area, Policy nextPlacement ) { placeOnMainWindow( c, area, nextPlacement ); } void Placement::placeUnderMouse(Client* c, QRect& area, Policy /*next*/ ) { area = checkArea( c, area ); QRect geom = c->geometry(); geom.moveCenter( cursorPos()); c->move( geom.topLeft()); c->keepInArea( area ); // make sure it's kept inside workarea } void Placement::placeOnMainWindow(Client* c, QRect& area, Policy nextPlacement ) { if( nextPlacement == Unknown ) nextPlacement = Centered; if( nextPlacement == Maximizing ) // maximize if needed placeMaximizing( c, area, NoPlacement ); area = checkArea( c, area ); ClientList mainwindows = c->mainClients(); Client* place_on = NULL; Client* place_on2 = NULL; int mains_count = 0; for( ClientList::ConstIterator it = mainwindows.begin(); it != mainwindows.end(); ++it ) { if( (*it)->isSpecialWindow()) continue; // don't consider toolbars etc when placing ++mains_count; place_on2 = *it; if( (*it)->isOnCurrentDesktop()) { if( place_on == NULL ) place_on = *it; else { // two or more on current desktop -> center // That's the default at least. However, with maximizing placement // policy as the default, the dialog should be either maximized or // made as large as its maximum size and then placed centered. // So the nextPlacement argument allows chaining. In this case, nextPlacement // is Maximizing and it will call placeCentered(). place( c, area, Centered ); return; } } } if( place_on == NULL ) { // 'mains_count' is used because it doesn't include ignored mainwindows if( mains_count != 1 ) { place( c, area, Centered ); return; } place_on = place_on2; // use the only window filtered together with 'mains_count' } QRect geom = c->geometry(); geom.moveCenter( place_on->geometry().center()); c->move( geom.topLeft()); // get area again, because the mainwindow may be on different xinerama screen area = checkArea( c, QRect()); c->keepInArea( area ); // make sure it's kept inside workarea } void Placement::placeMaximizing(Client* c, QRect& area, Policy nextPlacement ) { if( nextPlacement == Unknown ) nextPlacement = Smart; if( c->isMaximizable() && c->maxSize().width() >= area.width() && c->maxSize().height() >= area.height()) { if( m_WorkspacePtr->clientArea( MaximizeArea, c ) == area ) c->maximize( Client::MaximizeFull ); else // if the geometry doesn't match default maximize area (xinerama case?), { // it's probably better to use the given area c->setGeometry( area ); } } else { c->resizeWithChecks( c->maxSize().boundedTo( area.size())); place( c, area, nextPlacement ); } } QRect Placement::checkArea( const Client* c, const QRect& area ) { if( area.isNull()) return m_WorkspacePtr->clientArea( PlacementArea, c->geometry().center(), c->desktop()); return area; } #endif Placement::Policy Placement::policyFromString( const QString& policy, bool no_special ) { if( policy == "NoPlacement" ) return NoPlacement; else if( policy == "Default" && !no_special ) return Default; else if( policy == "Random" ) return Random; else if( policy == "Cascade" ) return Cascade; else if( policy == "Centered" ) return Centered; else if( policy == "ZeroCornered" ) return ZeroCornered; else if( policy == "UnderMouse" && !no_special) return UnderMouse; else if( policy == "OnMainWindow" && !no_special) return OnMainWindow; else if( policy == "Maximizing" ) return Maximizing; else return Smart; } const char* Placement::policyToString( Policy policy ) { const char* const policies[] = { "NoPlacement", "Default", "XXX should never see", "Random", "Smart", "Cascade", "Centered", "ZeroCornered", "UnderMouse", "OnMainWindow", "Maximizing" }; assert( policy < int( sizeof( policies ) / sizeof( policies[ 0 ] ))); return policies[ policy ]; } #ifndef KCMRULES // ******************** // Workspace // ******************** /*! Moves active window left until in bumps into another window or workarea edge. */ void Workspace::slotWindowPackLeft() { if( active_client && active_client->isMovable()) active_client->move( packPositionLeft( active_client, active_client->geometry().left(), true ), active_client->y()); } void Workspace::slotWindowPackRight() { if( active_client && active_client->isMovable()) active_client->move( packPositionRight( active_client, active_client->geometry().right(), true ) - active_client->width() + 1, active_client->y()); } void Workspace::slotWindowPackUp() { if( active_client && active_client->isMovable()) active_client->move( active_client->x(), packPositionUp( active_client, active_client->geometry().top(), true )); } void Workspace::slotWindowPackDown() { if( active_client && active_client->isMovable()) active_client->move( active_client->x(), packPositionDown( active_client, active_client->geometry().bottom(), true ) - active_client->height() + 1 ); } void Workspace::slotWindowGrowHorizontal() { if( active_client ) active_client->growHorizontal(); } void Client::growHorizontal() { if( !isResizable() || isShade()) return; QRect geom = geometry(); geom.setRight( workspace()->packPositionRight( this, geom.right(), true )); QSize adjsize = adjustedSize( geom.size(), SizemodeFixedW ); if( geometry().size() == adjsize && geom.size() != adjsize && xSizeHint.width_inc > 1 ) // take care of size increments { int newright = workspace()->packPositionRight( this, geom.right() + xSizeHint.width_inc - 1, true ); // check that it hasn't grown outside of the area, due to size increments // TODO this may be wrong? if( workspace()->clientArea( MovementArea, QPoint(( x() + newright ) / 2, geometry().center().y()), desktop()).right() >= newright ) geom.setRight( newright ); } geom.setSize( adjustedSize( geom.size(), SizemodeFixedW )); setGeometry( geom ); } void Workspace::slotWindowShrinkHorizontal() { if( active_client ) active_client->shrinkHorizontal(); } void Client::shrinkHorizontal() { if( !isResizable() || isShade()) return; QRect geom = geometry(); geom.setRight( workspace()->packPositionLeft( this, geom.right(), false )); if( geom.width() <= 1 ) return; geom.setSize( adjustedSize( geom.size(), SizemodeFixedW )); if( geom.width() > 20 ) setGeometry( geom ); } void Workspace::slotWindowGrowVertical() { if( active_client ) active_client->growVertical(); } void Client::growVertical() { if( !isResizable() || isShade()) return; QRect geom = geometry(); geom.setBottom( workspace()->packPositionDown( this, geom.bottom(), true )); QSize adjsize = adjustedSize( geom.size(), SizemodeFixedH ); if( geometry().size() == adjsize && geom.size() != adjsize && xSizeHint.height_inc > 1 ) // take care of size increments { int newbottom = workspace()->packPositionDown( this, geom.bottom() + xSizeHint.height_inc - 1, true ); // check that it hasn't grown outside of the area, due to size increments if( workspace()->clientArea( MovementArea, QPoint( geometry().center().x(), ( y() + newbottom ) / 2 ), desktop()).bottom() >= newbottom ) geom.setBottom( newbottom ); } geom.setSize( adjustedSize( geom.size(), SizemodeFixedH )); setGeometry( geom ); } void Workspace::slotWindowShrinkVertical() { if( active_client ) active_client->shrinkVertical(); } void Client::shrinkVertical() { if( !isResizable() || isShade()) return; QRect geom = geometry(); geom.setBottom( workspace()->packPositionUp( this, geom.bottom(), false )); if( geom.height() <= 1 ) return; geom.setSize( adjustedSize( geom.size(), SizemodeFixedH )); if( geom.height() > 20 ) setGeometry( geom ); } int Workspace::packPositionLeft( const Client* cl, int oldx, bool left_edge ) const { int newx = clientArea( MovementArea, cl ).left(); if( oldx <= newx ) // try another Xinerama screen newx = clientArea( MovementArea, QPoint( cl->geometry().left() - 1, cl->geometry().center().y()), cl->desktop()).left(); if( oldx <= newx ) return oldx; for( ClientList::ConstIterator it = clients.begin(); it != clients.end(); ++it) { if( !(*it)->isShown( false ) || !(*it)->isOnDesktop( active_client->desktop())) continue; int x = left_edge ? (*it)->geometry().right() + 1 : (*it)->geometry().left() - 1; if( x > newx && x < oldx && !( cl->geometry().top() > (*it)->geometry().bottom() // they overlap in Y direction || cl->geometry().bottom() < (*it)->geometry().top())) newx = x; } return newx; } int Workspace::packPositionRight( const Client* cl, int oldx, bool right_edge ) const { int newx = clientArea( MovementArea, cl ).right(); if( oldx >= newx ) // try another Xinerama screen newx = clientArea( MovementArea, QPoint( cl->geometry().right() + 1, cl->geometry().center().y()), cl->desktop()).right(); if( oldx >= newx ) return oldx; for( ClientList::ConstIterator it = clients.begin(); it != clients.end(); ++it) { if( !(*it)->isShown( false ) || !(*it)->isOnDesktop( cl->desktop())) continue; int x = right_edge ? (*it)->geometry().left() - 1 : (*it)->geometry().right() + 1; if( x < newx && x > oldx && !( cl->geometry().top() > (*it)->geometry().bottom() || cl->geometry().bottom() < (*it)->geometry().top())) newx = x; } return newx; } int Workspace::packPositionUp( const Client* cl, int oldy, bool top_edge ) const { int newy = clientArea( MovementArea, cl ).top(); if( oldy <= newy ) // try another Xinerama screen newy = clientArea( MovementArea, QPoint( cl->geometry().center().x(), cl->geometry().top() - 1 ), cl->desktop()).top(); if( oldy <= newy ) return oldy; for( ClientList::ConstIterator it = clients.begin(); it != clients.end(); ++it) { if( !(*it)->isShown( false ) || !(*it)->isOnDesktop( cl->desktop())) continue; int y = top_edge ? (*it)->geometry().bottom() + 1 : (*it)->geometry().top() - 1; if( y > newy && y < oldy && !( cl->geometry().left() > (*it)->geometry().right() // they overlap in X direction || cl->geometry().right() < (*it)->geometry().left())) newy = y; } return newy; } int Workspace::packPositionDown( const Client* cl, int oldy, bool bottom_edge ) const { int newy = clientArea( MovementArea, cl ).bottom(); if( oldy >= newy ) // try another Xinerama screen newy = clientArea( MovementArea, QPoint( cl->geometry().center().x(), cl->geometry().bottom() + 1 ), cl->desktop()).bottom(); if( oldy >= newy ) return oldy; for( ClientList::ConstIterator it = clients.begin(); it != clients.end(); ++it) { if( !(*it)->isShown( false ) || !(*it)->isOnDesktop( cl->desktop())) continue; int y = bottom_edge ? (*it)->geometry().top() - 1 : (*it)->geometry().bottom() + 1; if( y < newy && y > oldy && !( cl->geometry().left() > (*it)->geometry().right() || cl->geometry().right() < (*it)->geometry().left())) newy = y; } return newy; } /*! Asks the internal positioning object to place a client */ void Workspace::place(Client* c, QRect& area) { initPositioning->place( c, area ); } void Workspace::placeSmart(Client* c, const QRect& area) { initPositioning->placeSmart( c, area ); } #endif } // namespace