The complete S&T group has an additional, surrounding magnetic border now. Fixes #7437.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@42378 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/add-ons/decorators/SATDecorator/SATDecorator.cpp

@@ -16,6 +16,7 @@
 #include <WindowPrivate.h>
 
 #include "DrawingEngine.h"
+#include "SATWindow.h"
 
 
 //#define DEBUG_SATDECORATOR
@@ -66,6 +67,13 @@ SATDecorAddOn::InitCheck() const
 }
 
 
+WindowBehaviour*
+SATDecorAddOn::AllocateWindowBehaviour(Window* window)
+{
+	return new (std::nothrow)SATWindowBehaviour(window, &fStackAndTile);
+}
+
+
 Decorator*
 SATDecorAddOn::_AllocateDecorator(DesktopSettings& settings, BRect rect,
 	window_look look, uint32 flags)
@@ -467,6 +475,40 @@ SATDecorator::GetComponentColors(Component component, uint8 highlight,
 }
 
 
+SATWindowBehaviour::SATWindowBehaviour(Window* window, StackAndTile* sat)
+	:
+	DefaultWindowBehaviour(window),
+
+	fStackAndTile(sat)
+{
+}
+
+
+bool
+SATWindowBehaviour::AlterDeltaForSnap(Window* window, BPoint& delta,
+	bigtime_t now)
+{
+	if (DefaultWindowBehaviour::AlterDeltaForSnap(window, delta, now) == true)
+		return true;
+
+	SATWindow* satWindow = fStackAndTile->GetSATWindow(window);
+	if (satWindow == NULL)
+		return false;
+	SATGroup* group = satWindow->GetGroup();
+	if (group == NULL)
+		return false;
+
+	BRect groupFrame = group->WindowAt(0)->CompleteWindowFrame();
+	for (int32 i = 1; i < group->CountItems(); i++)
+		groupFrame = groupFrame | group->WindowAt(i)->CompleteWindowFrame();
+
+	fMagneticBorder.AlterDeltaForSnap(window->Screen(),
+		groupFrame, delta, now);
+
+	return true;
+}
+
+
 extern "C" DecorAddOn* (instantiate_decor_addon)(image_id id, const char* name)
 {
 	return new (std::nothrow)SATDecorAddOn(id, name);

src/add-ons/decorators/SATDecorator/SATDecorator.h

@@ -11,6 +11,7 @@
 
 #include "DecorManager.h"
 #include "DefaultDecorator.h"
+#include "DefaultWindowBehaviour.h"
 #include "StackAndTile.h"
 
 
@@ -20,6 +21,8 @@ public:
 
 	virtual status_t			InitCheck() const;
 
+	virtual	WindowBehaviour*	AllocateWindowBehaviour(Window* window);
+
 protected:
 	virtual Decorator*			_AllocateDecorator(DesktopSettings& settings,
 									BRect rect, window_look look, uint32 flags);
@@ -71,4 +74,18 @@ private:
 };
 
 
+class SATWindowBehaviour : public DefaultWindowBehaviour {
+public:
+								SATWindowBehaviour(Window* window,
+									StackAndTile* sat);
+
+protected:
+	virtual bool				AlterDeltaForSnap(Window* window, BPoint& delta,
+									bigtime_t now);
+
+private:
+			StackAndTile*		fStackAndTile;
+};
+
+
 #endif

src/add-ons/decorators/SATDecorator/SATWindow.h

@@ -10,6 +10,8 @@
 
 
 #include <Region.h>
+
+#include "MagneticBorder.h"
 #include "SATDecorator.h"
 #include "Stacking.h"
 #include "Tiling.h"
@@ -63,6 +65,8 @@ private:
 			Constraint*			fKeepMaxHeightConstraint;
 			Constraint*			fWidthConstraint;
 			Constraint*			fHeightConstraint;
+			
+			MagneticBorder		fMagneticBorder;
 };