From 378161e531f2ee86e4656b3154367f8d5cdb0243 Mon Sep 17 00:00:00 2001
From: Matthias Ettrich <ettrich@troll.no>
Date: Thu, 25 Nov 1999 16:38:11 +0000
Subject: [PATCH] hook for snapping functionality

svn path=/trunk/kdebase/kwin/; revision=35032
---
 client.cpp    |  1 +
 workspace.cpp | 33 ++++++++++++++++++++++-----------
 workspace.h   |  7 ++++---
 3 files changed, 27 insertions(+), 14 deletions(-)

diff --git a/client.cpp b/client.cpp
index 71c1da9d80..bd30ac5913 100644
--- a/client.cpp
+++ b/client.cpp
@@ -877,6 +877,7 @@ void Client::mouseMoveEvent( QMouseEvent * e)
 	}
     }
     else if ( isMove() && geom.topLeft() != geometry().topLeft() ) {
+	geom.moveTopLeft( workspace()->adjustClientPosition( this, geom.topLeft() ) );
 	switch ( options->moveMode ) {
 	case Options::Opaque:
 	    move( geom.topLeft() );
diff --git a/workspace.cpp b/workspace.cpp
index 398ae3dd23..44394b43ab 100644
--- a/workspace.cpp
+++ b/workspace.cpp
@@ -112,9 +112,9 @@ Workspace::Workspace()
     grabKey(XK_Tab, ControlMask);
     grabKey(XK_Tab, ControlMask | ShiftMask);
     createKeybindings();
-    
+
     init();
-    
+
     control_grab = FALSE;
     tab_grab = FALSE;
     tab_box = new TabBox( this );
@@ -806,7 +806,7 @@ void Workspace::clientHidden( Client* c )
 }
 
 
-QPopupMenu* Workspace::clientPopup( Client* c ) 
+QPopupMenu* Workspace::clientPopup( Client* c )
 {
     popup_client = c;
     if ( !popup ) {
@@ -861,7 +861,7 @@ void Workspace::clientPopupActivated( int id )
 	popup_client->iconify();
     else if ( id == popupIdFullscreen )
 	popup_client->fullScreen();
-    else if ( id == popupIdShade ) 
+    else if ( id == popupIdShade )
 	popup_client->setShade( !popup_client->isShade() );
 }
 
@@ -1255,7 +1255,7 @@ void Workspace::setCurrentDesktop( int new_desktop ){
 		    atoms->net_current_desktop, XA_CARDINAL, 32,
 		    PropModeReplace, (unsigned char *)&current_desktop, 1);
 
-    
+
     // try to restore the focus on this desktop
     Client* c = active_client?active_client:previousClient(0);
     Client* stop = c;
@@ -1264,7 +1264,7 @@ void Workspace::setCurrentDesktop( int new_desktop ){
 	if ( c == stop )
 	    break;
     }
-    
+
     if ( !c || !c->isVisible() ) {
 	// there's no suitable client in the focus chain. Try to find any other client then.
 	for ( ClientList::ConstIterator it = stacking_order.begin(); it != stacking_order.end(); ++it) {
@@ -1452,7 +1452,7 @@ void Workspace::createKeybindings(){
     keys->connectItem( "Switch to desktop 6", this, SLOT( slotSwitchDesktop6() ));
     keys->connectItem( "Switch to desktop 7", this, SLOT( slotSwitchDesktop7() ));
     keys->connectItem( "Switch to desktop 8", this, SLOT( slotSwitchDesktop8() ));
-    
+
     keys->connectItem( "Pop-up window operations menu", this, SLOT( slotWindowOperations() ) );
     keys->connectItem( "Window close", this, SLOT( slotWindowClose() ) );
 
@@ -1486,7 +1486,7 @@ void Workspace::slotSwitchDesktop8(){
 
 void Workspace::desktopPopupAboutToShow()
 {
-    if ( !desk_popup ) 
+    if ( !desk_popup )
 	return;
     desk_popup->clear();
     desk_popup->insertItem( i18n("&All desktops"), 0 );
@@ -1516,13 +1516,13 @@ void Workspace::sendToDesktop( int desk )
 	popup_client->setSticky( !popup_client->isSticky() );
 	return;
     }
-    
+
     if ( popup_client->isSticky() )
 	popup_client->setSticky( FALSE );
-    
+
     if ( popup_client->isOnDesktop( desk ) )
 	return;
-    
+
     popup_client->setDesktop( desk );
     popup_client->hide();
 }
@@ -1541,3 +1541,14 @@ void Workspace::slotWindowClose()
 	return;
     popup_client->closeWindow();
 }
+
+
+/*
+  Client \a c is moved around to position \a pos. This gives the
+  workspace the opportunity to interveniate and to implement
+  snap-to-windows functionality.
+ */
+QPoint Workspace::adjustClientPosition( Client* c, QPoint pos )
+{
+    return pos;
+}
diff --git a/workspace.h b/workspace.h
index 3c261e09d0..4322f882f3 100644
--- a/workspace.h
+++ b/workspace.h
@@ -69,6 +69,7 @@ public:
     void requestFocus( Client* c);
 
     void doPlacement( Client* c );
+    QPoint adjustClientPosition( Client* c, QPoint pos );
     void raiseClient( Client* c );
 
     void clientHidden( Client*  );
@@ -91,7 +92,7 @@ public:
 
 
     QPopupMenu* clientPopup( Client* );
-    
+
     void setDesktopClient( Client* );
 
     void makeFullScreen( Client* );
@@ -109,11 +110,11 @@ public slots:
     void slotSwitchDesktop6();
     void slotSwitchDesktop7();
     void slotSwitchDesktop8();
-    
+
     void slotWindowOperations();
     void slotWindowClose();
 
-    
+
 private slots:
     void setDecorationStyle( int );
     void desktopPopupAboutToShow();