shape windows support, some fixes for configure-request handling

svn path=/trunk/kdebase/kwin/; revision=33553

client.cpp

@@ -13,6 +13,7 @@
 #include <X11/Xlib.h>
 #include <X11/Xutil.h>
 #include <X11/Xatom.h>
+#include <X11/extensions/shape.h>
 
 extern Atom qt_wm_state;
 
@@ -30,6 +31,7 @@ void Client::drawbound( const QRect& geom )
     p.setRasterOp( Qt::XorROP );
     p.drawRect( geom );
 }
+
 void Client::clearbound()
 {
     if ( !visible_bound )
@@ -39,6 +41,16 @@ void Client::clearbound()
     visible_bound = 0;
 }
 
+void Client::updateShape()
+{
+    if ( shape() ) 
+	XShapeCombineShape(qt_xdisplay(), winId(), ShapeBounding,
+			   windowWrapper()->x(), windowWrapper()->y(),
+			   window(), ShapeBounding, ShapeSet);
+    else 
+	XShapeCombineMask( qt_xdisplay(), winId(), ShapeBounding, 0, 0,
+			   None, ShapeSet);
+}
 
 static void sendClientMessage(Window w, Atom a, long x){
   XEvent ev;
@@ -116,7 +128,6 @@ WindowWrapper::WindowWrapper( WId w, Client *parent, const char* name)
 		   StructureNotifyMask
 		   );
 
-
     // install a passive grab to catch mouse button events
     XGrabButton(qt_xdisplay(), AnyButton, AnyModifier, winId(), FALSE,
 		ButtonPressMask, GrabModeSync, GrabModeSync,
@@ -145,7 +156,9 @@ void WindowWrapper::resizeEvent( QResizeEvent * )
     if ( win ) {
 	XMoveResizeWindow( qt_xdisplay(), win,
 			   0, 0, width(), height() );
-}
+	if ( ((Client*)parentWidget())->shape() )
+	    ((Client*)parentWidget())->updateShape();
+    }
 }
 
 void WindowWrapper::showEvent( QShowEvent* )
@@ -262,7 +275,7 @@ Client::Client( Workspace *ws, WId w, QWidget *parent, const char *name, WFlags
     active = FALSE;
     shaded = FALSE;
     transient_for = None;
-    is_sticky = FALSE;
+    is_shape = FALSE;
 
     getIcons();
     getWindowProtocols();
@@ -325,6 +338,11 @@ void Client::manage( bool isMapped )
 	placementDone = TRUE;
     }
 
+    if ( (is_shape = Shape::hasShape( win )) ) {
+	updateShape();
+    }
+    
+
     // ### TODO check XGetWMHints() for initial mapping state, icon, etc. pp.
     // assume window wants to be visible on the current desktop
     desk = KWM::desktop( win ); //workspace()->currentDesktop();

client.h

@@ -118,6 +118,11 @@ public:
     // transparent stuff
     virtual void drawbound( const QRect& geom );
     virtual void clearbound();
+    
+    
+    // shape extensions
+    bool shape() const;
+    void updateShape();
 
 public slots:
     void iconify();
@@ -196,6 +201,7 @@ private:
     bool shaded;
     WId transient_for;
     bool is_sticky;
+    bool is_shape;
     void getIcons();
     void getWindowProtocols();
     uint Pdeletewindow :1; // does the window understand the DeleteWindow protocol?
@@ -283,6 +289,11 @@ inline bool Client::isSticky() const
 }
 
 
+inline bool Client::shape() const
+{
+    return is_shape;
+}
+
 class NoBorderClient : public Client
 {
     Q_OBJECT

workspace.cpp

@@ -14,6 +14,31 @@
 #include <X11/Xutil.h>
 #include <X11/Xatom.h>
 #include <X11/keysym.h>
+#include <X11/extensions/shape.h>
+
+// used to store the return values of
+// XShapeQueryExtension.
+// Necessary since shaped window are an extension to X
+static int kwin_has_shape = 0;
+static int kwin_shape_event = 0;
+
+// does the window w  need a shape combine mask around it?
+bool Shape::hasShape( WId w){
+  int xws, yws, xbs, ybs;
+  unsigned wws, hws, wbs, hbs;
+  int boundingShaped, clipShaped;
+  if (!kwin_has_shape)
+      return FALSE;
+  XShapeQueryExtents(qt_xdisplay(), w,
+		     &boundingShaped, &xws, &yws, &wws, &hws,
+		     &clipShaped, &xbs, &ybs, &wbs, &hbs);
+  return boundingShaped != 0;
+}
+
+int Shape::shapeEvent()
+{
+    return kwin_shape_event;
+}
 
 
 static Client* clientFactory( Workspace *ws, WId w )
@@ -37,17 +62,21 @@ static Client* clientFactory( Workspace *ws, WId w )
 	c->setSticky( TRUE );
 	return c;
     }
+    
+    if ( Shape::hasShape( w ) ){
+	return new NoBorderClient( ws, w );
+    }
 
     KConfig *config = KGlobal::config();
     config->setGroup("style");
     // well, it will be soon ;-)
     QString tmpStr = config->readEntry("Plugin", "standard");
-    if(tmpStr == "standard")
-        return new StdClient( ws, w );
-    else if(tmpStr == "system")
-        return new SystemClient( ws, w );
+    if(tmpStr == "system")
+	return new SystemClient( ws, w );
     else if(tmpStr == "be")
-        return new BeClient( ws, w );
+	return new BeClient( ws, w );
+    else
+	return new StdClient( ws, w );
 }
 
 Workspace::Workspace()
@@ -66,6 +95,9 @@ Workspace::Workspace()
 		 SubstructureNotifyMask
 		 );
 
+    int dummy;
+    kwin_has_shape = XShapeQueryExtension(qt_xdisplay(), &kwin_shape_event, &dummy);
+    
     init();
     control_grab = FALSE;
     tab_grab = FALSE;
@@ -227,7 +259,10 @@ bool Workspace::workspaceEvent( XEvent * e )
 	}
 	break;
     case ConfigureRequest:
-	if ( e->xconfigurerequest.parent == root ) {
+	c = findClient( e->xconfigurerequest.window );
+	if ( c )
+	    return c->windowEvent( e );
+	else if ( e->xconfigurerequest.parent == root ) {
 	    XWindowChanges wc;
 	    unsigned int value_mask = 0;
 	    wc.border_width = 0;
@@ -239,29 +274,9 @@ bool Workspace::workspaceEvent( XEvent * e )
 	    wc.stack_mode = Above;
 	    value_mask = e->xconfigurerequest.value_mask | CWBorderWidth;
 	    XConfigureWindow( qt_xdisplay(), e->xconfigurerequest.window, value_mask, & wc );
-	
-	    XWindowAttributes attr;
-	    if (XGetWindowAttributes(qt_xdisplay(), e->xconfigurerequest.window, &attr)){
-		// send a synthetic configure notify in any case (even if we didn't change anything)
-		XConfigureEvent c;
-		c.type = ConfigureNotify;
-		c.event = e->xconfigurerequest.window;
-		c.window = e->xconfigurerequest.window;
-		c.x = attr.x;
-		c.y = attr.y;
-		c.width = attr.width;
-		c.height = attr.height;
-		c.border_width = 0;
-		XSendEvent( qt_xdisplay(), c.event, TRUE, NoEventMask, (XEvent*)&c );
-	    }
+	    
 	    return TRUE;
 	}
-	else {
-	    c = findClient( e->xconfigurerequest.window );
-	    if ( c )
-		return c->windowEvent( e );
-	}
-
 	break;
     case KeyPress:
 	return keyPress(e->xkey);
@@ -277,6 +292,11 @@ bool Workspace::workspaceEvent( XEvent * e )
 	return clientMessage(e->xclient);
 	break;
     default:
+	if  ( e->type == Shape::shapeEvent() ) {
+	    c = findClient( ((XShapeEvent *)e)->window );
+	    if ( c )
+		c->updateShape();
+	}
 	break;
     }
     return FALSE;

workspace.h

@@ -15,6 +15,12 @@ class KGlobalAccel;
 typedef QValueList<Client*> ClientList;
 typedef QValueList<WId> WIdList;
 
+class Shape {
+public:
+    static bool hasShape( WId w);
+    static int shapeEvent();
+};
+
 class Workspace : public QObject
 {
     Q_OBJECT
@@ -105,7 +111,7 @@ private:
     void setDecoration( int deco );
 
     void propagateClients( bool onlyStacking = FALSE);
-    
+
     WIdList dockwins;
     bool addDockwin( WId w );
     bool removeDockwin( WId w );