haiku-beta6/src/servers/app/ServerWindow.cpp

/*
 * Copyright 2001-2008, Haiku.
 * Distributed under the terms of the MIT License.
 *
 * Authors:
 *		DarkWyrm <[email protected]>
 *		Adrian Oanca <[email protected]>
 *		Stephan Aßmus <[email protected]>
 *		Stefano Ceccherini ([email protected])
 *		Axel Dörfler, [email protected]
 *		Artur Wyszynski <[email protected]>
 *		Philippe Saint-Pierre, [email protected]
 */

/*!
	\class ServerWindow
	\brief Shadow BWindow class

	A ServerWindow handles all the intraserver tasks required of it by its BWindow. There are
	too many tasks to list as being done by them, but they include handling View transactions,
	coordinating and linking a window's Window half with its messaging half, dispatching
	mouse and key events from the server to its window, and other such things.
*/


#include "ServerWindow.h"

#include "AppServer.h"
#include "Desktop.h"
#include "DrawingEngine.h"
#include "HWInterface.h"
#include "Overlay.h"
#include "ProfileMessageSupport.h"
#include "RenderingBuffer.h"
#include "ServerApp.h"
#include "ServerBitmap.h"
#include "ServerPicture.h"
#include "ServerProtocol.h"
#include "Window.h"
#include "WorkspacesView.h"

#include "clipping.h"

#include <DirectWindowPrivate.h>
#include <MessagePrivate.h>
#include <PortLink.h>
#include <ServerProtocolStructs.h>
#include <ViewPrivate.h>
#include <WindowInfo.h>
#include <WindowPrivate.h>

#include <AppDefs.h>
#include <Autolock.h>
#include <Debug.h>
#include <DirectWindow.h>
#include <TokenSpace.h>
#include <View.h>
#include <GradientLinear.h>
#include <GradientRadial.h>
#include <GradientRadialFocus.h>
#include <GradientDiamond.h>
#include <GradientConic.h>

#include <new>

using std::nothrow;

//#define TRACE_SERVER_WINDOW
#ifdef TRACE_SERVER_WINDOW
#	include <stdio.h>
#	define STRACE(x) debug_printf x
#else
#	define STRACE(x) ;
#endif

//#define TRACE_SERVER_WINDOW_MESSAGES
#ifdef TRACE_SERVER_WINDOW_MESSAGES
#	include <stdio.h>
static const char* kDrawingModeMap[] = {
	"B_OP_COPY",
	"B_OP_OVER",
	"B_OP_ERASE",
	"B_OP_INVERT",
	"B_OP_ADD",
	"B_OP_SUBTRACT",
	"B_OP_BLEND",
	"B_OP_MIN",
	"B_OP_MAX",
	"B_OP_SELECT",
	"B_OP_ALPHA",

	"fix kDrawingModeMap",
	"fix kDrawingModeMap",
	"fix kDrawingModeMap",
	"fix kDrawingModeMap",
	"fix kDrawingModeMap",
};
#	define DTRACE(x) debug_printf x
#else
#	define DTRACE(x) ;
#endif

//#define TRACE_SERVER_GRADIENTS
#ifdef TRACE_SERVER_GRADIENTS
#	include <OS.h>
#	define GTRACE(x) debug_printf x
#else
#	define GTRACE(x) ;
#endif

//#define PROFILE_MESSAGE_LOOP
#ifdef PROFILE_MESSAGE_LOOP
struct profile { int32 code; int32 count; bigtime_t time; };
static profile sMessageProfile[AS_LAST_CODE];
static profile sRedrawProcessingTime;
//static profile sNextMessageTime;
#endif


struct direct_window_data {
	direct_window_data();
	~direct_window_data();

	status_t InitCheck() const;

	sem_id	sem;
	sem_id	sem_ack;
	area_id	area;
	BRect	old_window_frame;
	direct_buffer_info *buffer_info;
	bool	started;
};


direct_window_data::direct_window_data()
	:
	sem(-1),
	sem_ack(-1),
	area(-1),
	buffer_info(NULL),
	started(false)
{
	area = create_area("direct area", (void **)&buffer_info,
		B_ANY_ADDRESS, B_PAGE_SIZE, B_NO_LOCK, B_READ_WRITE);

	sem = create_sem(0, "direct sem");
	sem_ack = create_sem(0, "direct sem ack");
}


direct_window_data::~direct_window_data()
{
	// this should make the client die in case it's still running
	buffer_info->bits = NULL;
	buffer_info->bytes_per_row = 0;

	delete_area(area);
	delete_sem(sem);
	delete_sem(sem_ack);
}


status_t
direct_window_data::InitCheck() const
{
	if (area < B_OK)
		return area;
	if (sem < B_OK)
		return sem;
	if (sem_ack < B_OK)
		return sem_ack;

	return B_OK;
}


//	#pragma mark -


/*!
	Sets up the basic BWindow counterpart - you have to call Init() before
	you can actually use it, though.
*/
ServerWindow::ServerWindow(const char *title, ServerApp *app,
	port_id clientPort, port_id looperPort, int32 clientToken)
	: MessageLooper(title && *title ? title : "Unnamed Window"),
	fTitle(NULL),
	fDesktop(app->GetDesktop()),
	fServerApp(app),
	fWindow(NULL),
	fWindowAddedToDesktop(false),

	fClientTeam(app->ClientTeam()),

	fMessagePort(-1),
	fClientReplyPort(clientPort),
	fClientLooperPort(looperPort),

	fClientToken(clientToken),

	fCurrentView(NULL),
	fCurrentDrawingRegion(),
	fCurrentDrawingRegionValid(false),

	fDirectWindowData(NULL),
	fDirectWindowFeel(B_NORMAL_WINDOW_FEEL)
{
	STRACE(("ServerWindow(%s)::ServerWindow()\n", title));

	SetTitle(title);
	fServerToken = BPrivate::gDefaultTokens.NewToken(B_SERVER_TOKEN, this);

	BMessenger::Private(fFocusMessenger).SetTo(fClientTeam,
		looperPort, B_PREFERRED_TOKEN);
	BMessenger::Private(fHandlerMessenger).SetTo(fClientTeam,
		looperPort, clientToken);

	fEventTarget.SetTo(fFocusMessenger);

	fDeathSemaphore = create_sem(0, "window death");
}


#ifdef PROFILE_MESSAGE_LOOP
static int
compare_message_profiles(const void* _a, const void* _b)
{
	profile* a = (profile*)*(void**)_a;
	profile* b = (profile*)*(void**)_b;
	if (a->time < b->time)
		return 1;
	if (a->time > b->time)
		return -1;
	return 0;
}
#endif


//! Tears down all connections the main app_server objects, and deletes some internals.
ServerWindow::~ServerWindow()
{
	STRACE(("ServerWindow(%s@%p):~ServerWindow()\n", fTitle, this));

	if (!fWindow->IsOffscreenWindow()) {
		fWindowAddedToDesktop = false;
		fDesktop->RemoveWindow(fWindow);
	}

	if (App() != NULL)
		App()->RemoveWindow(this);

	delete fWindow;

	free(fTitle);
	delete_port(fMessagePort);

	BPrivate::gDefaultTokens.RemoveToken(fServerToken);

	delete fDirectWindowData;
	STRACE(("ServerWindow(%p) will exit NOW\n", this));

	delete_sem(fDeathSemaphore);

#ifdef PROFILE_MESSAGE_LOOP
	BList profiles;
	for (int32 i = 0; i < AS_LAST_CODE; i++) {
		if (sMessageProfile[i].count == 0)
			continue;
		sMessageProfile[i].code = i;
		profiles.AddItem(&sMessageProfile[i]);
	}

	profiles.SortItems(compare_message_profiles);

	BString codeName;
	int32 count = profiles.CountItems();
	for (int32 i = 0; i < count; i++) {
		profile* p = (profile*)profiles.ItemAtFast(i);
		string_for_message_code(p->code, codeName);
		printf("[%s] called %ld times, %g secs (%Ld usecs per call)\n",
			codeName.String(), p->count, p->time / 1000000.0,
			p->time / p->count);
	}
	if (sRedrawProcessingTime.count > 0) {
		printf("average redraw processing time: %g secs, count: %ld (%lld usecs per call)\n",
			sRedrawProcessingTime.time / 1000000.0, sRedrawProcessingTime.count,
			sRedrawProcessingTime.time / sRedrawProcessingTime.count);
	}
//	if (sNextMessageTime.count > 0) {
//		printf("average NextMessage() time: %g secs, count: %ld (%lld usecs per call)\n",
//			sNextMessageTime.time / 1000000.0, sNextMessageTime.count,
//			sNextMessageTime.time / sNextMessageTime.count);
//	}
#endif
}


status_t
ServerWindow::Init(BRect frame, window_look look, window_feel feel,
	uint32 flags, uint32 workspace)
{
	if (!App()->AddWindow(this)) {
		fServerApp = NULL;
		return B_NO_MEMORY;
	}

	if (fTitle == NULL)
		return B_NO_MEMORY;

	// fMessagePort is the port to which the app sends messages for the server
	fMessagePort = create_port(100, fTitle);
	if (fMessagePort < B_OK)
		return fMessagePort;

	fLink.SetSenderPort(fClientReplyPort);
	fLink.SetReceiverPort(fMessagePort);

	// We cannot call MakeWindow in the constructor, since it
	// is a virtual function!
	fWindow = MakeWindow(frame, fTitle, look, feel, flags, workspace);
	if (!fWindow || fWindow->InitCheck() != B_OK) {
		delete fWindow;
		fWindow = NULL;
		return B_NO_MEMORY;
	}

	if (!fWindow->IsOffscreenWindow()) {
		fDesktop->AddWindow(fWindow);
		fWindowAddedToDesktop = true;
	}

	return B_OK;
}


void
ServerWindow::_PrepareQuit()
{
	if (fThread == find_thread(NULL)) {
		// make sure we're hidden
		fDesktop->LockSingleWindow();
		_Hide();
		fDesktop->UnlockSingleWindow();
	} else if (fThread >= B_OK)
		PostMessage(AS_HIDE_WINDOW);
}


void
ServerWindow::_GetLooperName(char* name, size_t length)
{
	const char *title = Title();
	if (title == NULL || !title[0])
		title = "Unnamed Window";

	snprintf(name, length, "w:%ld:%s", ClientTeam(), title);
}


//! Forces the window to update its decorator
void
ServerWindow::ReplaceDecorator()
{
	if (!IsLocked())
		debugger("you must lock a ServerWindow object before calling ::ReplaceDecorator()\n");

	STRACE(("ServerWindow %s: Replace Decorator\n", fTitle));
	//fWindow->UpdateDecorator();
}


/*! Shows the window's Window.
*/
void
ServerWindow::_Show()
{
	// NOTE: if you do something else, other than sending a port message, PLEASE lock
	STRACE(("ServerWindow %s: _Show\n", Title()));

	if (fQuitting || fWindow->IsMinimized() || !fWindow->IsHidden()
		|| fWindow->IsOffscreenWindow())
		return;

	// TODO: Maybe we need to dispatch a message to the desktop to show/hide us
	// instead of doing it from this thread.
	fDesktop->UnlockSingleWindow();
	fDesktop->ShowWindow(fWindow);
	fDesktop->LockSingleWindow();
}


/*! Hides the window's Window. You need to have all windows locked when
	calling this function.
*/
void
ServerWindow::_Hide()
{
	STRACE(("ServerWindow %s: _Hide\n", Title()));

	if (fWindow->IsHidden() || fWindow->IsOffscreenWindow())
		return;

	fDesktop->UnlockSingleWindow();
	fDesktop->HideWindow(fWindow);
	fDesktop->LockSingleWindow();
}


void
ServerWindow::RequestRedraw()
{
	PostMessage(AS_REDRAW, 0);
		// we don't care if this fails - it's only a notification, and if
		// it fails, there are obviously enough messages in the queue
		// already

	atomic_add(&fRedrawRequested, 1);
}


void
ServerWindow::SetTitle(const char* newTitle)
{
	char* oldTitle = fTitle;

	if (newTitle == NULL)
		newTitle = "";

	fTitle = strdup(newTitle);
	if (fTitle == NULL) {
		// out of memory condition
		fTitle = oldTitle;
		return;
	}

	free(oldTitle);

	if (Thread() >= B_OK) {
		char name[B_OS_NAME_LENGTH];
		_GetLooperName(name, sizeof(name));
		rename_thread(Thread(), name);
	}

	if (fWindow != NULL) {
//fDesktop->UnlockSingleWindow();
		fDesktop->SetWindowTitle(fWindow, newTitle);
//fDesktop->LockSingleWindow();
	}
}


//! Requests that the ServerWindow's BWindow quit
void
ServerWindow::NotifyQuitRequested()
{
	// NOTE: if you do something else, other than sending a port message,
	// PLEASE lock
	STRACE(("ServerWindow %s: Quit\n", fTitle));

	BMessage msg(B_QUIT_REQUESTED);
	SendMessageToClient(&msg);
}


void
ServerWindow::NotifyMinimize(bool minimize)
{
	if (fWindow->Feel() != B_NORMAL_WINDOW_FEEL)
		return;

	// The client is responsible for the actual minimization

	BMessage msg(B_MINIMIZE);
	msg.AddInt64("when", real_time_clock_usecs());
	msg.AddBool("minimize", minimize);

	SendMessageToClient(&msg);
}


//! Sends a message to the client to perform a Zoom
void
ServerWindow::NotifyZoom()
{
	// NOTE: if you do something else, other than sending a port message,
	// PLEASE lock
	BMessage msg(B_ZOOM);
	SendMessageToClient(&msg);
}


void
ServerWindow::GetInfo(window_info& info)
{
	info.team = ClientTeam();
	info.server_token = ServerToken();

	info.thread = Thread();
	info.client_token = ClientToken();
	info.client_port = fClientLooperPort;
	info.workspaces = fWindow->Workspaces();

	// logic taken from Switcher comments and experiments
	if (fWindow->IsHidden())
		info.layer = 0;
	else if (fWindow->IsVisible()) {
		if (fWindow->Feel() == kDesktopWindowFeel)
			info.layer = 2;
		else if (fWindow->IsFloating() || fWindow->IsModal())
			info.layer = 4;
		else
			info.layer = 3;
	} else
		info.layer = 1;

	info.feel = fWindow->Feel();
	info.flags = fWindow->Flags();
	info.window_left = (int)floor(fWindow->Frame().left);
	info.window_top = (int)floor(fWindow->Frame().top);
	info.window_right = (int)floor(fWindow->Frame().right);
	info.window_bottom = (int)floor(fWindow->Frame().bottom);

	info.show_hide_level = fWindow->IsHidden() ? 1 : 0; // ???
	info.is_mini = fWindow->IsMinimized();
}


void
ServerWindow::ResyncDrawState()
{
	_UpdateDrawState(fCurrentView);
}


/*!
	Returns the ServerWindow's Window, if it exists and has been
	added to the Desktop already.
	In other words, you cannot assume this method will always give you
	a valid pointer.
*/
Window*
ServerWindow::Window() const
{
	// TODO: ensure desktop is locked!
	if (!fWindowAddedToDesktop)
		return NULL;

	return fWindow;
}


View*
ServerWindow::_CreateView(BPrivate::LinkReceiver &link, View **_parent)
{
	// NOTE: no need to check for a lock. This is a private method.

	int32 token;
	BRect frame;
	uint32 resizeMask;
	uint32 eventMask;
	uint32 eventOptions;
	uint32 flags;
	bool hidden;
	int32 parentToken;
	char* name = NULL;
	rgb_color viewColor;
	BPoint scrollingOffset;

	link.Read<int32>(&token);
	link.ReadString(&name);
	link.Read<BRect>(&frame);
	link.Read<BPoint>(&scrollingOffset);
	link.Read<uint32>(&resizeMask);
	link.Read<uint32>(&eventMask);
	link.Read<uint32>(&eventOptions);
	link.Read<uint32>(&flags);
	link.Read<bool>(&hidden);
	link.Read<rgb_color>(&viewColor);
	link.Read<int32>(&parentToken);

	STRACE(("ServerWindow(%s)::_CreateView()-> view %s, token %ld\n",
		fTitle, name, token));

	View* newView;

	if ((flags & kWorkspacesViewFlag) != 0) {
		newView = new (nothrow) WorkspacesView(frame, scrollingOffset, name,
			token, resizeMask, flags);
	} else {
		newView = new (nothrow) View(frame, scrollingOffset, name, token,
			resizeMask, flags);
	}

	free(name);

	if (newView == NULL)
		return NULL;

	// there is no way of setting this, other than manually :-)
	newView->SetViewColor(viewColor);
	newView->SetHidden(hidden);
	newView->SetEventMask(eventMask, eventOptions);

	if (eventMask != 0 || eventOptions != 0) {
//		fDesktop->UnlockSingleWindow();
//		fDesktop->LockAllWindows();
fDesktop->UnlockAllWindows();
		// TODO: possible deadlock
		fDesktop->EventDispatcher().AddListener(EventTarget(),
			newView->Token(), eventMask, eventOptions);
fDesktop->LockAllWindows();
//		fDesktop->UnlockAllWindows();
//		fDesktop->LockSingleWindow();
	}

	// Initialize the view with the current application plain font.
	// NOTE: This might be out of sync with the global app_server plain
	// font, but that is so on purpose! The client needs to resync itself
	// with the app_server fonts upon notification, but if we just use
	// the current font here, the be_plain_font on the client may still
	// hold old values. So this needs to be an update initiated by the
	// client application.
	newView->CurrentState()->SetFont(App()->PlainFont());

	if (_parent) {
		View *parent;
		if (App()->ViewTokens().GetToken(parentToken, B_HANDLER_TOKEN,
				(void**)&parent) != B_OK
			|| parent->Window()->ServerWindow() != this) {
			debug_printf("View token not found!\n");
			parent = NULL;
		}

		*_parent = parent;
	}

	return newView;
}


/*!
	Dispatches all window messages, and those view messages that
	don't need a valid fCurrentView (ie. view creation).
*/
void
ServerWindow::_DispatchMessage(int32 code, BPrivate::LinkReceiver &link)
{
	switch (code) {
		case AS_SHOW_WINDOW:
			DTRACE(("ServerWindow %s: Message AS_SHOW_WINDOW\n", Title()));
			_Show();
			break;

		case AS_HIDE_WINDOW:
			DTRACE(("ServerWindow %s: Message AS_HIDE_WINDOW\n", Title()));
			_Hide();
			break;

		case AS_MINIMIZE_WINDOW:
		{
			int32 showLevel;
			bool minimize;

			link.Read<bool>(&minimize);
			if (link.Read<int32>(&showLevel) == B_OK) {
				DTRACE(("ServerWindow %s: Message AS_MINIMIZE_WINDOW, "
					"showLevel: %ld, minimize: %d\n", Title(), showLevel,
					minimize));

				if (showLevel <= 0) {
					// window is currently hidden - ignore the minimize request
					fWindow->SetMinimized(minimize);
						// TODO: commenting this out makes BWindow::fMinimized
						// and Window::fMinimized go out of sync. However, not
						// doing it currently causes #4127.
					break;
				}

				if (minimize && !fWindow->IsHidden()) {
					_Hide();
					fWindow->SetMinimized(minimize);
				} else if (!minimize && fWindow->IsHidden()) {
					fDesktop->UnlockSingleWindow();
					fDesktop->ActivateWindow(fWindow);
						// this will unminimize the window for us
					fDesktop->LockSingleWindow();
				}

			}
			break;
		}

		case AS_ACTIVATE_WINDOW:
		{
			bool activate = true;
			if (link.Read<bool>(&activate) != B_OK)
				break;

			DTRACE(("ServerWindow %s: Message AS_ACTIVATE_WINDOW: activate: "
				"%d\n", Title(), activate));

			fDesktop->UnlockSingleWindow();

			if (activate)
				fDesktop->ActivateWindow(fWindow);
			else
				fDesktop->SendWindowBehind(fWindow, NULL);

			fDesktop->LockSingleWindow();
			break;
		}
		case AS_SEND_BEHIND:
		{
			int32 token;
			team_id teamID;
			status_t status = B_ERROR;

			link.Read<int32>(&token);
			if (link.Read<team_id>(&teamID) == B_OK) {
				::Window *behindOf = fDesktop->FindWindowByClientToken(token,
					teamID);

				DTRACE(("ServerWindow %s: Message AS_SEND_BEHIND %s\n",
					Title(), behindOf ? behindOf->Title() : "NULL"));

				if (behindOf != NULL) {
//fDesktop->UnlockSingleWindow();
// TODO: there is a big race condition when we unlock here
// (window could be gone by now)!
					fDesktop->SendWindowBehind(fWindow, behindOf);
//fDesktop->LockSingleWindow();
					status = B_OK;
				} else
					status = B_NAME_NOT_FOUND;
			}

			fLink.StartMessage(status);
			fLink.Flush();
			break;
		}

		case B_QUIT_REQUESTED:
			DTRACE(("ServerWindow %s received quit request\n", Title()));
			NotifyQuitRequested();
			break;

		case AS_ENABLE_UPDATES:
			DTRACE(("ServerWindow %s: Message AS_ENABLE_UPDATES\n", Title()));
			fWindow->EnableUpdateRequests();
			break;

		case AS_DISABLE_UPDATES:
			DTRACE(("ServerWindow %s: Message AS_DISABLE_UPDATES\n", Title()));
			fWindow->DisableUpdateRequests();
			break;

		case AS_NEEDS_UPDATE:
			DTRACE(("ServerWindow %s: Message AS_NEEDS_UPDATE: %d\n",
				Title(), fWindow->NeedsUpdate()));
			if (fWindow->NeedsUpdate())
				fLink.StartMessage(B_OK);
			else
				fLink.StartMessage(B_ERROR);
			fLink.Flush();
			break;

		case AS_SET_WINDOW_TITLE:
		{
			char* newTitle;
			if (link.ReadString(&newTitle) == B_OK) {
				DTRACE(("ServerWindow %s: Message AS_SET_WINDOW_TITLE: %s\n",
					Title(), newTitle));

				SetTitle(newTitle);
				free(newTitle);
			}
			break;
		}

		case AS_ADD_TO_SUBSET:
		{
			DTRACE(("ServerWindow %s: Message AS_ADD_TO_SUBSET\n", Title()));
			status_t status = B_ERROR;

			int32 token;
			if (link.Read<int32>(&token) == B_OK) {
				::Window* window = fDesktop->FindWindowByClientToken(token,
					App()->ClientTeam());
				if (window == NULL || window->Feel() != B_NORMAL_WINDOW_FEEL) {
					status = B_BAD_VALUE;
				} else {
//fDesktop->UnlockSingleWindow();
// TODO: there is a big race condition when we unlock here
// (window could be gone by now)!
					status = fDesktop->AddWindowToSubset(fWindow, window)
						? B_OK : B_NO_MEMORY;
//fDesktop->LockSingleWindow();
				}
			}

			fLink.StartMessage(status);
			fLink.Flush();
			break;
		}
		case AS_REMOVE_FROM_SUBSET:
		{
			DTRACE(("ServerWindow %s: Message AS_REM_FROM_SUBSET\n", Title()));
			status_t status = B_ERROR;

			int32 token;
			if (link.Read<int32>(&token) == B_OK) {
				::Window* window = fDesktop->FindWindowByClientToken(token,
					App()->ClientTeam());
				if (window != NULL) {
//fDesktop->UnlockSingleWindow();
// TODO: there is a big race condition when we unlock here (window could be gone by now)!
					fDesktop->RemoveWindowFromSubset(fWindow, window);
//fDesktop->LockSingleWindow();
					status = B_OK;
				} else
					status = B_BAD_VALUE;
			}

			fLink.StartMessage(status);
			fLink.Flush();
			break;
		}

		case AS_SET_LOOK:
		{
			DTRACE(("ServerWindow %s: Message AS_SET_LOOK\n", Title()));

			status_t status = B_ERROR;
			int32 look;
			if (link.Read<int32>(&look) == B_OK) {
				// test if look is valid
				status = Window::IsValidLook((window_look)look)
					? B_OK : B_BAD_VALUE;
			}

			if (status == B_OK && !fWindow->IsOffscreenWindow()) {
//fDesktop->UnlockSingleWindow();
				fDesktop->SetWindowLook(fWindow, (window_look)look);
//fDesktop->LockSingleWindow();
			}

			fLink.StartMessage(status);
			fLink.Flush();
			break;
		}
		case AS_SET_FEEL:
		{
			DTRACE(("ServerWindow %s: Message AS_SET_FEEL\n", Title()));

			status_t status = B_ERROR;
			int32 feel;
			if (link.Read<int32>(&feel) == B_OK) {
				// test if feel is valid
				status = Window::IsValidFeel((window_feel)feel)
					? B_OK : B_BAD_VALUE;
			}

			if (status == B_OK && !fWindow->IsOffscreenWindow()) {
//fDesktop->UnlockSingleWindow();
				fDesktop->SetWindowFeel(fWindow, (window_feel)feel);
//fDesktop->LockSingleWindow();
			}

			fLink.StartMessage(status);
			fLink.Flush();
			break;
		}
		case AS_SET_FLAGS:
		{
			DTRACE(("ServerWindow %s: Message AS_SET_FLAGS\n", Title()));

			status_t status = B_ERROR;
			uint32 flags;
			if (link.Read<uint32>(&flags) == B_OK) {
				// test if flags are valid
				status = (flags & ~Window::ValidWindowFlags()) == 0
					? B_OK : B_BAD_VALUE;
			}

			if (status == B_OK && !fWindow->IsOffscreenWindow()) {
//fDesktop->UnlockSingleWindow();
				fDesktop->SetWindowFlags(fWindow, flags);
//fDesktop->LockSingleWindow();
			}

			fLink.StartMessage(status);
			fLink.Flush();
			break;
		}
#if 0
		case AS_SET_ALIGNMENT:
		{
			// TODO: Implement AS_SET_ALIGNMENT
			DTRACE(("ServerWindow %s: Message Set_Alignment unimplemented\n",
				Title()));
			break;
		}
		case AS_GET_ALIGNMENT:
		{
			// TODO: Implement AS_GET_ALIGNMENT
			DTRACE(("ServerWindow %s: Message Get_Alignment unimplemented\n",
				Title()));
			break;
		}
#endif
		case AS_IS_FRONT_WINDOW:
		{
			bool isFront = fDesktop->FrontWindow() == fWindow;
			DTRACE(("ServerWindow %s: Message AS_IS_FRONT_WINDOW: %d\n",
				Title(), isFront));
			fLink.StartMessage(isFront ? B_OK : B_ERROR);
			fLink.Flush();
			break;
		}

		case AS_GET_WORKSPACES:
		{
			DTRACE(("ServerWindow %s: Message AS_GET_WORKSPACES\n", Title()));
			fLink.StartMessage(B_OK);
			fLink.Attach<uint32>(fWindow->Workspaces());
			fLink.Flush();
			break;
		}
		case AS_SET_WORKSPACES:
		{
			uint32 newWorkspaces;
			if (link.Read<uint32>(&newWorkspaces) != B_OK)
				break;

			DTRACE(("ServerWindow %s: Message AS_SET_WORKSPACES %lx\n",
				Title(), newWorkspaces));

//fDesktop->UnlockSingleWindow();
			fDesktop->SetWindowWorkspaces(fWindow, newWorkspaces);
//fDesktop->LockSingleWindow();
			break;
		}
		case AS_WINDOW_RESIZE:
		{
			float xResizeTo;
			float yResizeTo;
			link.Read<float>(&xResizeTo);
			if (link.Read<float>(&yResizeTo) != B_OK)
				break;

			DTRACE(("ServerWindow %s: Message AS_WINDOW_RESIZE %.1f, %.1f\n",
				Title(), xResizeTo, yResizeTo));

			// comment this code for the time being, as some apps rely
			// on the programmatically resize behavior during user resize
//			if (fWindow->IsResizing()) {
				// While the user resizes the window, we ignore
				// pragmatically set window bounds
//				fLink.StartMessage(B_BUSY);
//			} else {
//fDesktop->UnlockSingleWindow();
				fDesktop->ResizeWindowBy(fWindow,
					xResizeTo - fWindow->Frame().Width(),
					yResizeTo - fWindow->Frame().Height());
//fDesktop->LockSingleWindow();
				fLink.StartMessage(B_OK);
//			}
			fLink.Flush();
			break;
		}
		case AS_WINDOW_MOVE:
		{
			float xMoveTo;
			float yMoveTo;
			link.Read<float>(&xMoveTo);
			if (link.Read<float>(&yMoveTo) != B_OK)
				break;

			DTRACE(("ServerWindow %s: Message AS_WINDOW_MOVE: %.1f, %.1f\n",
				Title(), xMoveTo, yMoveTo));

			if (fWindow->IsDragging()) {
				// While the user moves the window, we ignore
				// pragmatically set window positions
				fLink.StartMessage(B_BUSY);
			} else {
//fDesktop->UnlockSingleWindow();
				fDesktop->MoveWindowBy(fWindow, xMoveTo - fWindow->Frame().left,
					yMoveTo - fWindow->Frame().top);
//fDesktop->LockSingleWindow();
				fLink.StartMessage(B_OK);
			}
			fLink.Flush();
			break;
		}
		case AS_SET_SIZE_LIMITS:
		{
			// Attached Data:
			// 1) float minimum width
			// 2) float maximum width
			// 3) float minimum height
			// 4) float maximum height

			// TODO: for now, move the client to int32 as well!
			int32 minWidth, maxWidth, minHeight, maxHeight;
			float value;
			link.Read<float>(&value);	minWidth = (int32)value;
			link.Read<float>(&value);	maxWidth = (int32)value;
			link.Read<float>(&value);	minHeight = (int32)value;
			link.Read<float>(&value);	maxHeight = (int32)value;
/*
			link.Read<int32>(&minWidth);
			link.Read<int32>(&maxWidth);
			link.Read<int32>(&minHeight);
			link.Read<int32>(&maxHeight);
*/
			DTRACE(("ServerWindow %s: Message AS_SET_SIZE_LIMITS: "
				"x: %ld-%ld, y: %ld-%ld\n",
				Title(), minWidth, maxWidth, minHeight, maxHeight));

//fDesktop->UnlockSingleWindow();

			if (fDesktop->LockAllWindows()) {
				fWindow->SetSizeLimits(minWidth, maxWidth,
					minHeight, maxHeight);
				fDesktop->UnlockAllWindows();
			}

//fDesktop->LockSingleWindow();

			// and now, sync the client to the limits that we were able to enforce
			fWindow->GetSizeLimits(&minWidth, &maxWidth,
				&minHeight, &maxHeight);

			fLink.StartMessage(B_OK);
			fLink.Attach<BRect>(fWindow->Frame());
			fLink.Attach<float>((float)minWidth);
			fLink.Attach<float>((float)maxWidth);
			fLink.Attach<float>((float)minHeight);
			fLink.Attach<float>((float)maxHeight);

			fLink.Flush();
			break;
		}

		case AS_SET_DECORATOR_SETTINGS:
		{
			DTRACE(("ServerWindow %s: Message AS_SET_DECORATOR_SETTINGS\n",
				Title()));

			int32 size;
			if (fWindow && link.Read<int32>(&size) == B_OK) {
				char buffer[size];
				if (link.Read(buffer, size) == B_OK) {
					BMessage settings;
					if (settings.Unflatten(buffer) == B_OK) {
//fDesktop->UnlockSingleWindow();
						fDesktop->SetWindowDecoratorSettings(fWindow, settings);
//fDesktop->LockSingleWindow();
					}
				}
			}
			break;
		}

		case AS_GET_DECORATOR_SETTINGS:
		{
			DTRACE(("ServerWindow %s: Message AS_GET_DECORATOR_SETTINGS\n",
				Title()));

			bool success = false;

			BMessage settings;
			if (fWindow->GetDecoratorSettings(&settings)) {
				int32 size = settings.FlattenedSize();
				char buffer[size];
				if (settings.Flatten(buffer, size) == B_OK) {
					success = true;
					fLink.StartMessage(B_OK);
					fLink.Attach<int32>(size);
					fLink.Attach(buffer, size);
				}
			}

			if (!success)
				fLink.StartMessage(B_ERROR);

			fLink.Flush();
			break;
		}

		case AS_SYSTEM_FONT_CHANGED:
		{
			fDesktop->FontsChanged(fWindow);
			// TODO: tell client about this, too, and relayout...
			break;
		}

		case AS_REDRAW:
			// Nothing to do here - the redraws are actually handled by looking
			// at the fRedrawRequested member variable in _MessageLooper().
			break;

		case AS_SYNC:
			DTRACE(("ServerWindow %s: Message AS_SYNC\n", Title()));
			// the synchronisation works by the fact that the client
			// window is waiting for this reply, after having received it,
			// client and server queues are in sync (earlier, the client
			// may have pushed drawing commands at the server and now it
			// knows they have all been carried out)
			fLink.StartMessage(B_OK);
			fLink.Flush();
			break;

		case AS_BEGIN_UPDATE:
			DTRACE(("ServerWindow %s: Message AS_BEGIN_UPDATE\n", Title()));
			fWindow->BeginUpdate(fLink);
			break;

		case AS_END_UPDATE:
			DTRACE(("ServerWindow %s: Message AS_END_UPDATE\n", Title()));
			fWindow->EndUpdate();
			break;

		case AS_GET_MOUSE:
		{
			DTRACE(("ServerWindow %s: Message AS_GET_MOUSE\n", fTitle));

//fDesktop->UnlockSingleWindow();
			// Returns
			// 1) BPoint mouse location
			// 2) int32 button state

			BPoint where;
			int32 buttons;
			fDesktop->GetLastMouseState(&where, &buttons);
//fDesktop->LockSingleWindow();

			fLink.StartMessage(B_OK);
			fLink.Attach<BPoint>(where);
			fLink.Attach<int32>(buttons);
			fLink.Flush();
			break;
		}

		// BDirectWindow communication

		case AS_DIRECT_WINDOW_GET_SYNC_DATA:
		{
			status_t status = _EnableDirectWindowMode();

			fLink.StartMessage(status);
			if (status == B_OK) {
				struct direct_window_sync_data syncData = {
					fDirectWindowData->area,
					fDirectWindowData->sem,
					fDirectWindowData->sem_ack
				};

				fLink.Attach(&syncData, sizeof(syncData));
			}

			fLink.Flush();
			break;
		}
		case AS_DIRECT_WINDOW_SET_FULLSCREEN:
		{
			bool enable;
			link.Read<bool>(&enable);

			status_t status = B_OK;
			if (fDirectWindowData != NULL) {
//fDesktop->UnlockSingleWindow();
				_DirectWindowSetFullScreen(enable);	
//fDesktop->LockSingleWindow();
			} else
				status = B_BAD_TYPE;

			fLink.StartMessage(status);
			fLink.Flush();
			break;
		}

		// View creation and destruction (don't need a valid fCurrentView)

		case AS_SET_CURRENT_VIEW:
		{
			int32 token;
			if (link.Read<int32>(&token) != B_OK)
				break;

			View *current;
			if (App()->ViewTokens().GetToken(token, B_HANDLER_TOKEN,
					(void**)&current) != B_OK
				|| current->Window()->ServerWindow() != this) {
				// TODO: if this happens, we probably want to kill the app and
				// clean up
				debug_printf("ServerWindow %s: Message "
					"\n\n\nAS_SET_CURRENT_VIEW: view not found, token %ld\n",
					fTitle, token);
				current = NULL;
			} else {
				DTRACE(("\n\n\nServerWindow %s: Message AS_SET_CURRENT_VIEW: %s, "
					"token %ld\n", fTitle, current->Name(), token));
				_SetCurrentView(current);
			}
			break;
		}

		case AS_VIEW_CREATE_ROOT:
		{
			DTRACE(("ServerWindow %s: Message AS_VIEW_CREATE_ROOT\n", fTitle));

			// Start receiving top_view data -- pass NULL as the parent view.
			// This should be the *only* place where this happens.
			if (fCurrentView != NULL) {
				debug_printf("ServerWindow %s: Message "
					"AS_VIEW_CREATE_ROOT: fCurrentView already set!!\n",
					fTitle);
				break;
			}

			_SetCurrentView(_CreateView(link, NULL));
			fWindow->SetTopView(fCurrentView);
			break;
		}

		case AS_VIEW_CREATE:
		{
			DTRACE(("ServerWindow %s: Message AS_VIEW_CREATE: View name: "
				"%s\n", fTitle, fCurrentView->Name()));

			View* parent = NULL;
			View* newView = _CreateView(link, &parent);
			if (parent != NULL && newView != NULL)
				parent->AddChild(newView);
			else {
				debug_printf("ServerWindow %s: Message AS_VIEW_CREATE: "
					"parent or newView NULL!!\n", fTitle);
			}
			break;
		}

		default:
			// TODO: when creating a View, check for yet non-existing
			// View::InitCheck() and take appropriate actions, then checking
			// for fCurrentView->CurrentState() is unnecessary
			if (fCurrentView == NULL || fCurrentView->CurrentState() == NULL) {
				BString codeName;
				string_for_message_code(code, codeName);
				debug_printf("ServerWindow %s received unexpected code - "
					"message '%s' before top_view attached.\n",
					Title(), codeName.String());
				if (link.NeedsReply()) {
					fLink.StartMessage(B_ERROR);
					fLink.Flush();
				}
				return;
			}

			_DispatchViewMessage(code, link);
			break;
	}
}


/*!
	Dispatches all view messages that need a valid fCurrentView.
*/
void
ServerWindow::_DispatchViewMessage(int32 code,
	BPrivate::LinkReceiver &link)
{
	if (_DispatchPictureMessage(code, link))
		return;

	switch (code) {
		case AS_VIEW_SCROLL:
		{
			float dh;
			float dv;
			link.Read<float>(&dh);
			if (link.Read<float>(&dv) != B_OK)
				break;

			DTRACE(("ServerWindow %s: Message AS_VIEW_SCROLL: View name: "
				"%s, %.1f x %.1f\n", fTitle, fCurrentView->Name(), dh, dv));
			fWindow->ScrollViewBy(fCurrentView, dh, dv);
			break;
		}
		case AS_VIEW_COPY_BITS:
		{
			BRect src;
			BRect dst;

			link.Read<BRect>(&src);
			if (link.Read<BRect>(&dst) != B_OK)
				break;

			DTRACE(("ServerWindow %s: Message AS_VIEW_COPY_BITS: View name: "
				"%s, BRect(%.1f, %.1f, %.1f, %.1f) -> "
				"BRect(%.1f, %.1f, %.1f, %.1f)\n", fTitle,
				fCurrentView->Name(), src.left, src.top, src.right, src.bottom,
				dst.left, dst.top, dst.right, dst.bottom));

			BRegion contentRegion;
			// TODO: avoid copy operation maybe?
			fWindow->GetContentRegion(&contentRegion);
			fCurrentView->CopyBits(src, dst, contentRegion);
			break;
		}
		case AS_VIEW_DELETE:
		{
			// Received when a view is detached from a window

			int32 token;
			if (link.Read<int32>(&token) != B_OK)
				break;

			View *view;
			if (App()->ViewTokens().GetToken(token, B_HANDLER_TOKEN,
					(void**)&view) == B_OK
				&& view->Window()->ServerWindow() == this) {
				View* parent = view->Parent();

				DTRACE(("ServerWindow %s: AS_VIEW_DELETE view: %p, "
					"parent: %p\n", fTitle, view, parent));

				if (parent != NULL) {
					parent->RemoveChild(view);

					if (view->EventMask() != 0) {
						// TODO: possible deadlock (event dispatcher already
						// locked itself, waits for Desktop write lock, but
						// we have it, now we are trying to lock the event
						// dispatcher -> deadlock)
fDesktop->UnlockSingleWindow();
						fDesktop->EventDispatcher().RemoveListener(
							EventTarget(), token);
fDesktop->LockSingleWindow();
					}
					if (fCurrentView == view)
						_SetCurrentView(parent);
					delete view;
				} // else we don't delete the root view
			}
			break;
		}
		case AS_VIEW_SET_STATE:
		{
			DTRACE(("ServerWindow %s: Message AS_VIEW_SET_STATE: "
				"View name: %s\n", fTitle, fCurrentView->Name()));

			fCurrentView->CurrentState()->ReadFromLink(link);
			// TODO: When is this used?!?
			fCurrentView->RebuildClipping(true);
			_UpdateDrawState(fCurrentView);

			break;
		}
		case AS_VIEW_SET_FONT_STATE:
		{
			DTRACE(("ServerWindow %s: Message AS_VIEW_SET_FONT_STATE: "
				"View name: %s\n", fTitle, fCurrentView->Name()));

			fCurrentView->CurrentState()->ReadFontFromLink(link);
			fWindow->GetDrawingEngine()->SetFont(
				fCurrentView->CurrentState());
			break;
		}
		case AS_VIEW_GET_STATE:
		{
			DTRACE(("ServerWindow %s: Message AS_VIEW_GET_STATE: "
				"View name: %s\n", fTitle, fCurrentView->Name()));

			fLink.StartMessage(B_OK);

			// attach state data
			fCurrentView->CurrentState()->WriteToLink(fLink.Sender());
			fLink.Flush();
			break;
		}
		case AS_VIEW_SET_EVENT_MASK:
		{
			DTRACE(("ServerWindow %s: Message AS_VIEW_SET_EVENT_MASK: "
				"View name: %s\n", fTitle, fCurrentView->Name()));
			uint32 eventMask, options;

			link.Read<uint32>(&eventMask);
			if (link.Read<uint32>(&options) == B_OK) {
				fCurrentView->SetEventMask(eventMask, options);

fDesktop->UnlockSingleWindow();
				// TODO: possible deadlock!
				if (eventMask != 0 || options != 0) {
					fDesktop->EventDispatcher().AddListener(EventTarget(),
						fCurrentView->Token(), eventMask, options);
				} else {
					fDesktop->EventDispatcher().RemoveListener(EventTarget(),
						fCurrentView->Token());
				}
fDesktop->LockSingleWindow();
			}
			break;
		}
		case AS_VIEW_SET_MOUSE_EVENT_MASK:
		{
			DTRACE(("ServerWindow %s: Message AS_VIEW_SET_MOUSE_EVENT_MASK: "
				"View name: %s\n", fTitle, fCurrentView->Name()));
			uint32 eventMask, options;

			link.Read<uint32>(&eventMask);
			if (link.Read<uint32>(&options) == B_OK) {
fDesktop->UnlockSingleWindow();
				// TODO: possible deadlock
				if (eventMask != 0 || options != 0) {
					if (options & B_LOCK_WINDOW_FOCUS)
						fDesktop->SetFocusLocked(fWindow);
					fDesktop->EventDispatcher().AddTemporaryListener(EventTarget(),
						fCurrentView->Token(), eventMask, options);
				} else {
					fDesktop->EventDispatcher().RemoveTemporaryListener(EventTarget(),
						fCurrentView->Token());
				}
fDesktop->LockSingleWindow();
			}

			// TODO: support B_LOCK_WINDOW_FOCUS option in Desktop
			break;
		}
		case AS_VIEW_MOVE_TO:
		{
			float x, y;
			link.Read<float>(&x);
			if (link.Read<float>(&y) != B_OK)
				break;

			DTRACE(("ServerWindow %s: Message AS_VIEW_MOVE_TO: View name: "
				"%s, x: %.1f, y: %.1f\n", fTitle, fCurrentView->Name(), x, y));

			float offsetX = x - fCurrentView->Frame().left;
			float offsetY = y - fCurrentView->Frame().top;

			BRegion dirty;
			fCurrentView->MoveBy(offsetX, offsetY, &dirty);

			// TODO: think about how to avoid this hack:
			// the parent clipping needs to be updated, it is not
			// done in MoveBy() since it would cause
			// too much computations when children are resized because
			// follow modes
			if (View* parent = fCurrentView->Parent())
				parent->RebuildClipping(false);

			fWindow->MarkContentDirty(dirty);
			break;
		}
		case AS_VIEW_RESIZE_TO:
		{
			float newWidth, newHeight;
			link.Read<float>(&newWidth);
			if (link.Read<float>(&newHeight) != B_OK)
				break;

			DTRACE(("ServerWindow %s: Message AS_VIEW_RESIZE_TO: View name: "
				"%s, width: %.1f, height: %.1f\n", fTitle,
				fCurrentView->Name(), newWidth, newHeight));

			float deltaWidth = newWidth - fCurrentView->Frame().Width();
			float deltaHeight = newHeight - fCurrentView->Frame().Height();

			BRegion dirty;
			fCurrentView->ResizeBy(deltaWidth, deltaHeight, &dirty);

			// TODO: see above
			if (View* parent = fCurrentView->Parent())
				parent->RebuildClipping(false);

			fWindow->MarkContentDirty(dirty);
			break;
		}
		case AS_VIEW_GET_COORD:
		{
			// our offset in the parent -> will be originX and originY
			// in BView
			BPoint parentOffset = fCurrentView->Frame().LeftTop();

			DTRACE(("ServerWindow %s: Message AS_VIEW_GET_COORD: "
				"View: %s -> x: %.1f, y: %.1f\n", Title(),
				fCurrentView->Name(), parentOffset.x, parentOffset.y));

			fLink.StartMessage(B_OK);
			fLink.Attach<BPoint>(parentOffset);
			fLink.Attach<BRect>(fCurrentView->Bounds());
			fLink.Flush();
			break;
		}
		case AS_VIEW_SET_ORIGIN:
		{
			float x, y;
			link.Read<float>(&x);
			if (link.Read<float>(&y) != B_OK)
				break;

			DTRACE(("ServerWindow %s: Message AS_VIEW_SET_ORIGIN: "
				"View: %s -> x: %.1f, y: %.1f\n", Title(),
				fCurrentView->Name(), x, y));

			fCurrentView->SetDrawingOrigin(BPoint(x, y));
			_UpdateDrawState(fCurrentView);
			break;
		}
		case AS_VIEW_GET_ORIGIN:
		{
			BPoint drawingOrigin = fCurrentView->DrawingOrigin();

			DTRACE(("ServerWindow %s: Message AS_VIEW_GET_ORIGIN: "
				"View: %s -> x: %.1f, y: %.1f\n", Title(),
				fCurrentView->Name(), drawingOrigin.x, drawingOrigin.y));

			fLink.StartMessage(B_OK);
			fLink.Attach<BPoint>(drawingOrigin);
			fLink.Flush();
			break;
		}
		case AS_VIEW_RESIZE_MODE:
		{
			uint32 resizeMode;
			if (link.Read<uint32>(&resizeMode) != B_OK)
				break;

			DTRACE(("ServerWindow %s: Message AS_VIEW_RESIZE_MODE: "
				"View: %s -> %ld\n", Title(), fCurrentView->Name(),
				resizeMode));

			fCurrentView->SetResizeMode(resizeMode);
			break;
		}
		case AS_VIEW_SET_FLAGS:
		{
			uint32 flags;
			link.Read<uint32>(&flags);

			// The views clipping changes when the B_DRAW_ON_CHILDREN flag is
			// toggled.
			bool updateClipping = (flags & B_DRAW_ON_CHILDREN)
				^ (fCurrentView->Flags() & B_DRAW_ON_CHILDREN);

			fCurrentView->SetFlags(flags);
			_UpdateDrawState(fCurrentView);

			if (updateClipping) {
				fCurrentView->RebuildClipping(false);
				fCurrentDrawingRegionValid = false;
			}

			DTRACE(("ServerWindow %s: Message AS_VIEW_SET_FLAGS: "
				"View: %s -> flags: %lu\n", Title(), fCurrentView->Name(),
				flags));
			break;
		}
		case AS_VIEW_HIDE:
			DTRACE(("ServerWindow %s: Message AS_VIEW_HIDE: View: %s\n",
				Title(), fCurrentView->Name()));
			fCurrentView->SetHidden(true);
			break;

		case AS_VIEW_SHOW:
			DTRACE(("ServerWindow %s: Message AS_VIEW_SHOW: View: %s\n",
				Title(), fCurrentView->Name()));
			fCurrentView->SetHidden(false);
			break;

		case AS_VIEW_SET_LINE_MODE:
		{
			DTRACE(("ServerWindow %s: Message AS_VIEW_SET_LINE_MODE: "
				"View: %s\n", Title(), fCurrentView->Name()));
			ViewSetLineModeInfo info;
			if (link.Read<ViewSetLineModeInfo>(&info) != B_OK)
				break;

			fCurrentView->CurrentState()->SetLineCapMode(info.lineCap);
			fCurrentView->CurrentState()->SetLineJoinMode(info.lineJoin);
			fCurrentView->CurrentState()->SetMiterLimit(info.miterLimit);

			fWindow->GetDrawingEngine()->SetStrokeMode(info.lineCap,
				info.lineJoin, info.miterLimit);

			break;
		}
		case AS_VIEW_GET_LINE_MODE:
		{
			DTRACE(("ServerWindow %s: Message AS_VIEW_GET_LINE_MODE: "
				"View: %s\n", Title(), fCurrentView->Name()));
			ViewSetLineModeInfo info;
			info.lineJoin = fCurrentView->CurrentState()->LineJoinMode();
			info.lineCap = fCurrentView->CurrentState()->LineCapMode();
			info.miterLimit = fCurrentView->CurrentState()->MiterLimit();

			fLink.StartMessage(B_OK);
			fLink.Attach<ViewSetLineModeInfo>(info);
			fLink.Flush();

			break;
		}
		case AS_VIEW_PUSH_STATE:
		{
			DTRACE(("ServerWindow %s: Message AS_VIEW_PUSH_STATE: View: "
				"%s\n", Title(), fCurrentView->Name()));

			fCurrentView->PushState();
			// TODO: is this necessary?
//			_UpdateDrawState(fCurrentView);
			break;
		}
		case AS_VIEW_POP_STATE:
		{
			DTRACE(("ServerWindow %s: Message AS_VIEW_POP_STATE: View: %s\n",
				Title(), fCurrentView->Name()));

			fCurrentView->PopState();
			_UpdateDrawState(fCurrentView);
			break;
		}
		case AS_VIEW_SET_SCALE:
		{
			float scale;
			if (link.Read<float>(&scale) != B_OK)
				break;

			DTRACE(("ServerWindow %s: Message AS_VIEW_SET_SCALE: "
				"View: %s -> scale: %.2f\n", Title(), fCurrentView->Name(),
				scale));

			fCurrentView->SetScale(scale);
			_UpdateDrawState(fCurrentView);
			break;
		}
		case AS_VIEW_GET_SCALE:
		{
			float scale = fCurrentView->CurrentState()->Scale();

			DTRACE(("ServerWindow %s: Message AS_VIEW_GET_SCALE: "
				"View: %s -> scale: %.2f\n",
				Title(), fCurrentView->Name(), scale));

			fLink.StartMessage(B_OK);
			fLink.Attach<float>(scale);
			fLink.Flush();
			break;
		}
		case AS_VIEW_SET_PEN_LOC:
		{
			BPoint location;
			if (link.Read<BPoint>(&location) != B_OK)
				break;

			DTRACE(("ServerWindow %s: Message AS_VIEW_SET_PEN_LOC: "
				"View: %s -> BPoint(%.1f, %.1f)\n", Title(),
				fCurrentView->Name(), location.x, location.y));

			fCurrentView->CurrentState()->SetPenLocation(location);
			break;
		}
		case AS_VIEW_GET_PEN_LOC:
		{
			BPoint location = fCurrentView->CurrentState()->PenLocation();

			DTRACE(("ServerWindow %s: Message AS_VIEW_GET_PEN_LOC: "
				"View: %s -> BPoint(%.1f, %.1f)\n", Title(),
				fCurrentView->Name(), location.x, location.y));

			fLink.StartMessage(B_OK);
			fLink.Attach<BPoint>(location);
			fLink.Flush();

			break;
		}
		case AS_VIEW_SET_PEN_SIZE:
		{
			float penSize;
			if (link.Read<float>(&penSize) != B_OK)
				break;

			DTRACE(("ServerWindow %s: Message AS_VIEW_SET_PEN_SIZE: "
				"View: %s -> %.1f\n", Title(), fCurrentView->Name(), penSize));

			fCurrentView->CurrentState()->SetPenSize(penSize);
			fWindow->GetDrawingEngine()->SetPenSize(
				fCurrentView->CurrentState()->PenSize());
			break;
		}
		case AS_VIEW_GET_PEN_SIZE:
		{
			float penSize = fCurrentView->CurrentState()->UnscaledPenSize();

			DTRACE(("ServerWindow %s: Message AS_VIEW_GET_PEN_SIZE: "
				"View: %s -> %.1f\n", Title(), fCurrentView->Name(), penSize));

			fLink.StartMessage(B_OK);
			fLink.Attach<float>(penSize);
			fLink.Flush();

			break;
		}
		case AS_VIEW_SET_VIEW_COLOR:
		{
			rgb_color color;
			if (link.Read(&color, sizeof(rgb_color)) != B_OK)
				break;

			DTRACE(("ServerWindow %s: Message AS_VIEW_SET_VIEW_COLOR: "
				"View: %s -> rgb_color(%d, %d, %d, %d)\n", Title(),
				fCurrentView->Name(), color.red, color.green, color.blue,
				color.alpha));

			fCurrentView->SetViewColor(color);
			break;
		}
		case AS_VIEW_GET_VIEW_COLOR:
		{
			rgb_color color = fCurrentView->ViewColor();

			DTRACE(("ServerWindow %s: Message AS_VIEW_GET_VIEW_COLOR: "
				"View: %s -> rgb_color(%d, %d, %d, %d)\n",
				Title(), fCurrentView->Name(), color.red, color.green,
				color.blue, color.alpha));

			fLink.StartMessage(B_OK);
			fLink.Attach<rgb_color>(color);
			fLink.Flush();
			break;
		}
		case AS_VIEW_SET_HIGH_COLOR:
		{
			rgb_color color;
			if (link.Read(&color, sizeof(rgb_color)) != B_OK)
				break;

			DTRACE(("ServerWindow %s: Message AS_VIEW_SET_HIGH_COLOR: "
				"View: %s -> rgb_color(%d, %d, %d, %d)\n",
				Title(), fCurrentView->Name(), color.red, color.green,
				color.blue, color.alpha));

			fCurrentView->CurrentState()->SetHighColor(color);
			fWindow->GetDrawingEngine()->SetHighColor(color);
			break;
		}
		case AS_VIEW_GET_HIGH_COLOR:
		{
			rgb_color color = fCurrentView->CurrentState()->HighColor();

			DTRACE(("ServerWindow %s: Message AS_VIEW_GET_HIGH_COLOR: "
				"View: %s -> rgb_color(%d, %d, %d, %d)\n",
				Title(), fCurrentView->Name(), color.red, color.green,
				color.blue, color.alpha));

			fLink.StartMessage(B_OK);
			fLink.Attach<rgb_color>(color);
			fLink.Flush();
			break;
		}
		case AS_VIEW_SET_LOW_COLOR:
		{
			rgb_color color;
			if (link.Read(&color, sizeof(rgb_color)) != B_OK)
				break;

			DTRACE(("ServerWindow %s: Message AS_VIEW_SET_LOW_COLOR: "
				"View: %s -> rgb_color(%d, %d, %d, %d)\n",
				Title(), fCurrentView->Name(), color.red, color.green,
				color.blue, color.alpha));

			fCurrentView->CurrentState()->SetLowColor(color);
			fWindow->GetDrawingEngine()->SetLowColor(color);
			break;
		}
		case AS_VIEW_GET_LOW_COLOR:
		{
			rgb_color color = fCurrentView->CurrentState()->LowColor();

			DTRACE(("ServerWindow %s: Message AS_VIEW_GET_LOW_COLOR: "
				"View: %s -> rgb_color(%d, %d, %d, %d)\n",
				Title(), fCurrentView->Name(), color.red, color.green,
				color.blue, color.alpha));

			fLink.StartMessage(B_OK);
			fLink.Attach<rgb_color>(color);
			fLink.Flush();
			break;
		}
		case AS_VIEW_SET_PATTERN:
		{
			DTRACE(("ServerWindow %s: Message AS_VIEW_SET_PATTERN: "
				"View: %s\n", fTitle, fCurrentView->Name()));

			pattern pat;
			if (link.Read(&pat, sizeof(pattern)) != B_OK)
				break;

			fCurrentView->CurrentState()->SetPattern(Pattern(pat));
			fWindow->GetDrawingEngine()->SetPattern(pat);
			break;
		}

		case AS_VIEW_SET_BLENDING_MODE:
		{
			DTRACE(("ServerWindow %s: Message AS_VIEW_SET_BLEND_MODE: "
				"View: %s\n", Title(), fCurrentView->Name()));

			ViewBlendingModeInfo info;
			if (link.Read<ViewBlendingModeInfo>(&info) != B_OK)
				break;

			fCurrentView->CurrentState()->SetBlendingMode(
				info.sourceAlpha, info.alphaFunction);
			fWindow->GetDrawingEngine()->SetBlendingMode(
				info.sourceAlpha, info.alphaFunction);
			break;
		}
		case AS_VIEW_GET_BLENDING_MODE:
		{
			DTRACE(("ServerWindow %s: Message AS_VIEW_GET_BLEND_MODE: "
				"View: %s\n", Title(), fCurrentView->Name()));

			ViewBlendingModeInfo info;
			info.sourceAlpha = fCurrentView->CurrentState()->AlphaSrcMode();
			info.alphaFunction = fCurrentView->CurrentState()->AlphaFncMode();

			fLink.StartMessage(B_OK);
			fLink.Attach<ViewBlendingModeInfo>(info);
			fLink.Flush();

			break;
		}
		case AS_VIEW_SET_DRAWING_MODE:
		{
			int8 drawingMode;
			if (link.Read<int8>(&drawingMode) != B_OK)
				break;

			DTRACE(("ServerWindow %s: Message AS_VIEW_SET_DRAW_MODE: "
				"View: %s -> %s\n", Title(), fCurrentView->Name(),
				kDrawingModeMap[drawingMode]));

			fCurrentView->CurrentState()->SetDrawingMode(
				(drawing_mode)drawingMode);
			fWindow->GetDrawingEngine()->SetDrawingMode(
				(drawing_mode)drawingMode);
			break;
		}
		case AS_VIEW_GET_DRAWING_MODE:
		{
			int8 drawingMode
				= (int8)(fCurrentView->CurrentState()->GetDrawingMode());

			DTRACE(("ServerWindow %s: Message AS_VIEW_GET_DRAW_MODE: "
				"View: %s -> %s\n", Title(), fCurrentView->Name(),
				kDrawingModeMap[drawingMode]));

			fLink.StartMessage(B_OK);
			fLink.Attach<int8>(drawingMode);
			fLink.Flush();

			break;
		}
		case AS_VIEW_SET_VIEW_BITMAP:
		{
			DTRACE(("ServerWindow %s: Message AS_VIEW_SET_VIEW_BITMAP: "
				"View: %s\n", Title(), fCurrentView->Name()));

			int32 bitmapToken, resizingMode, options;
			BRect srcRect, dstRect;

			link.Read<int32>(&bitmapToken);
			link.Read<BRect>(&srcRect);
			link.Read<BRect>(&dstRect);
			link.Read<int32>(&resizingMode);
			status_t status = link.Read<int32>(&options);

			rgb_color colorKey = {0};

			if (status == B_OK) {
				ServerBitmap* bitmap = fServerApp->FindBitmap(bitmapToken);
				if (bitmapToken == -1 || bitmap != NULL) {
					bool wasOverlay = fCurrentView->ViewBitmap() != NULL
						&& fCurrentView->ViewBitmap()->Overlay() != NULL;

					// TODO: this is a race condition: the bitmap could have been
					//	deleted in the mean time!!
					fCurrentView->SetViewBitmap(bitmap, srcRect, dstRect,
						resizingMode, options);

					// TODO: if we revert the view color overlay handling
					//	in View::Draw() to the R5 version, we never
					//	need to invalidate the view for overlays.

					// invalidate view - but only if this is a non-overlay switch
					if (bitmap == NULL || bitmap->Overlay() == NULL || !wasOverlay) {
						BRegion dirty((BRect)fCurrentView->Bounds());
						fWindow->InvalidateView(fCurrentView, dirty);
					}

					if (bitmap != NULL && bitmap->Overlay() != NULL) {
						bitmap->Overlay()->SetFlags(options);
						colorKey = bitmap->Overlay()->Color();
					}
				} else
					status = B_BAD_VALUE;
			}

			fLink.StartMessage(status);
			if (status == B_OK && (options & AS_REQUEST_COLOR_KEY) != 0) {
				// Attach color key for the overlay bitmap
				fLink.Attach<rgb_color>(colorKey);
			}

			fLink.Flush();
			break;
		}
		case AS_VIEW_PRINT_ALIASING:
		{
			DTRACE(("ServerWindow %s: Message AS_VIEW_PRINT_ALIASING: "
				"View: %s\n", Title(), fCurrentView->Name()));

			bool fontAliasing;
			if (link.Read<bool>(&fontAliasing) == B_OK) {
				fCurrentView->CurrentState()->SetForceFontAliasing(fontAliasing);
				_UpdateDrawState(fCurrentView);
			}
			break;
		}
		case AS_VIEW_CLIP_TO_PICTURE:
		{
			DTRACE(("ServerWindow %s: Message AS_VIEW_CLIP_TO_PICTURE: "
				"View: %s\n", Title(), fCurrentView->Name()));

			// TODO: you are not allowed to use View regions here!!!

			int32 pictureToken;
			BPoint where;
			bool inverse = false;

			link.Read<int32>(&pictureToken);
			link.Read<BPoint>(&where);
			if (link.Read<bool>(&inverse) != B_OK)
				break;

			// search for a picture with the specified token.
			ServerPicture *picture = fServerApp->FindPicture(pictureToken);
			// TODO: Increase that picture's reference count.(~ allocate a picture)
			if (picture == NULL)
				break;

			BRegion region;
			// TODO: I think we also need the BView's token
			// I think PictureToRegion would fit better into the View class (?)
			if (PictureToRegion(picture, region, inverse, where) < B_OK)
				break;

			fCurrentView->SetUserClipping(&region);
			break;
		}

		case AS_VIEW_GET_CLIP_REGION:
		{
			DTRACE(("ServerWindow %s: Message AS_VIEW_GET_CLIP_REGION: "
				"View: %s\n", Title(), fCurrentView->Name()));

			// if this View is hidden, it is clear that its visible region is void.
			fLink.StartMessage(B_OK);
			if (!fWindow->IsVisible() || !fCurrentView->IsVisible()) {
				BRegion empty;
				fLink.AttachRegion(empty);
			} else {
				_UpdateCurrentDrawingRegion();
				BRegion region(fCurrentDrawingRegion);
				fCurrentView->ConvertFromScreen(&region);
				fLink.AttachRegion(region);
			}
			fLink.Flush();

			break;
		}
		case AS_VIEW_SET_CLIP_REGION:
		{
			int32 rectCount;
			status_t status = link.Read<int32>(&rectCount);
				// a negative count means no
				// region for the current draw state,
				// but an *empty* region is actually valid!
				// even if it means no drawing is allowed

			if (status < B_OK)
				break;

			if (rectCount >= 0) {
				// we are supposed to set the clipping region
				BRegion region;
				if (rectCount > 0 && link.ReadRegion(&region) < B_OK)
					break;

				DTRACE(("ServerWindow %s: Message AS_VIEW_SET_CLIP_REGION: "
					"View: %s -> rect count: %ld, frame = "
					"BRect(%.1f, %.1f, %.1f, %.1f)\n",
					Title(), fCurrentView->Name(), rectCount,
					region.Frame().left, region.Frame().top,
					region.Frame().right, region.Frame().bottom));

				fCurrentView->SetUserClipping(&region);
			} else {
				// we are supposed to unset the clipping region
				// passing NULL sets this states region to that
				// of the previous state

				DTRACE(("ServerWindow %s: Message AS_VIEW_SET_CLIP_REGION: "
					"View: %s -> unset\n", Title(), fCurrentView->Name()));

				fCurrentView->SetUserClipping(NULL);
			}
			fCurrentDrawingRegionValid = false;

			break;
		}

		case AS_VIEW_INVALIDATE_RECT:
		{
			// NOTE: looks like this call is NOT affected by origin and scale
			// on R5 so this implementation is "correct"
			BRect invalidRect;
			if (link.Read<BRect>(&invalidRect) == B_OK) {
				DTRACE(("ServerWindow %s: Message AS_VIEW_INVALIDATE_RECT: "
					"View: %s -> BRect(%.1f, %.1f, %.1f, %.1f)\n", Title(),
					fCurrentView->Name(), invalidRect.left, invalidRect.top,
					invalidRect.right, invalidRect.bottom));

				BRegion dirty(invalidRect);
				fWindow->InvalidateView(fCurrentView, dirty);
			}
			break;
		}
		case AS_VIEW_INVALIDATE_REGION:
		{
			// NOTE: looks like this call is NOT affected by origin and scale
			// on R5 so this implementation is "correct"
			BRegion region;
			if (link.ReadRegion(&region) < B_OK)
				break;

			DTRACE(("ServerWindow %s: Message AS_VIEW_INVALIDATE_REGION: "
					"View: %s -> rect count: %ld, frame: BRect(%.1f, %.1f, "
					"%.1f, %.1f)\n", Title(),
					fCurrentView->Name(), region.CountRects(),
					region.Frame().left, region.Frame().top,
					region.Frame().right, region.Frame().bottom));

			fWindow->InvalidateView(fCurrentView, region);
			break;
		}

		case AS_VIEW_DRAG_IMAGE:
		{
			// TODO: flesh out AS_VIEW_DRAG_IMAGE
			DTRACE(("ServerWindow %s: Message AS_DRAG_IMAGE\n", Title()));

			int32 bitmapToken;
			drawing_mode dragMode;
			BPoint offset;
			int32 bufferSize;

			link.Read<int32>(&bitmapToken);
			link.Read<int32>((int32*)&dragMode);
			link.Read<BPoint>(&offset);
			link.Read<int32>(&bufferSize);

			if (bufferSize > 0) {
				char* buffer = new (nothrow) char[bufferSize];
				BMessage dragMessage;
				if (link.Read(buffer, bufferSize) == B_OK
					&& dragMessage.Unflatten(buffer) == B_OK) {
						ServerBitmap* bitmap = fServerApp->FindBitmap(bitmapToken);
						// TODO: possible deadlock
fDesktop->UnlockSingleWindow();
						fDesktop->EventDispatcher().SetDragMessage(dragMessage,
							bitmap, offset);
fDesktop->LockSingleWindow();
				}
				delete[] buffer;
			}
			// sync the client (it can now delete the bitmap)
			fLink.StartMessage(B_OK);
			fLink.Flush();

			break;
		}
		case AS_VIEW_DRAG_RECT:
		{
			// TODO: flesh out AS_VIEW_DRAG_RECT
			DTRACE(("ServerWindow %s: Message AS_DRAG_RECT\n", Title()));

			BRect dragRect;
			BPoint offset;
			int32 bufferSize;

			link.Read<BRect>(&dragRect);
			link.Read<BPoint>(&offset);
			link.Read<int32>(&bufferSize);

			if (bufferSize > 0) {
				char* buffer = new (nothrow) char[bufferSize];
				BMessage dragMessage;
				if (link.Read(buffer, bufferSize) == B_OK
					&& dragMessage.Unflatten(buffer) == B_OK) {
						// TODO: possible deadlock
fDesktop->UnlockSingleWindow();
						fDesktop->EventDispatcher().SetDragMessage(dragMessage,
							NULL /* should be dragRect */, offset);
fDesktop->LockSingleWindow();
				}
				delete[] buffer;
			}
			break;
		}

		case AS_VIEW_BEGIN_RECT_TRACK:
		{
			DTRACE(("ServerWindow %s: Message AS_VIEW_BEGIN_RECT_TRACK\n",
				Title()));
			BRect dragRect;
			uint32 style;

			link.Read<BRect>(&dragRect);
			link.Read<uint32>(&style);

			// TODO: implement rect tracking (used sometimes for selecting
			// a group of things, also sometimes used to appear to drag something,
			// but without real drag message)
			break;
		}
		case AS_VIEW_END_RECT_TRACK:
		{
			DTRACE(("ServerWindow %s: Message AS_VIEW_END_RECT_TRACK\n",
				Title()));
			// TODO: implement rect tracking
			break;
		}

		case AS_VIEW_BEGIN_PICTURE:
		{
			DTRACE(("ServerWindow %s: Message AS_VIEW_BEGIN_PICTURE\n",
				Title()));
			ServerPicture *picture = App()->CreatePicture();
			picture->SyncState(fCurrentView);
			fCurrentView->SetPicture(picture);
			break;
		}

		case AS_VIEW_APPEND_TO_PICTURE:
		{
			DTRACE(("ServerWindow %s: Message AS_VIEW_APPEND_TO_PICTURE\n",
				Title()));

			int32 pictureToken;
			link.Read<int32>(&pictureToken);
			ServerPicture *picture = App()->FindPicture(pictureToken);
			if (picture)
				picture->SyncState(fCurrentView);
			fCurrentView->SetPicture(picture);
				// we don't care if it's NULL
			break;
		}

		case AS_VIEW_END_PICTURE:
		{
			DTRACE(("ServerWindow %s: Message AS_VIEW_END_PICTURE\n",
				Title()));

			ServerPicture *picture = fCurrentView->Picture();
			if (picture != NULL) {
				fCurrentView->SetPicture(NULL);
				fLink.StartMessage(B_OK);
				fLink.Attach<int32>(picture->Token());
			} else
				fLink.StartMessage(B_ERROR);

			fLink.Flush();
			break;
		}

		default:
			_DispatchViewDrawingMessage(code, link);
			break;
	}
}


/*!
	Dispatches all view drawing messages.
	The desktop clipping must be read locked when entering this method.
	Requires a valid fCurrentView.
*/
void
ServerWindow::_DispatchViewDrawingMessage(int32 code,
	BPrivate::LinkReceiver &link)
{
	if (!fCurrentView->IsVisible() || !fWindow->IsVisible()) {
		if (link.NeedsReply()) {
			debug_printf("ServerWindow::DispatchViewDrawingMessage() got "
				"message %ld that needs a reply!\n", code);
			// the client is now blocking and waiting for a reply!
			fLink.StartMessage(B_ERROR);
			fLink.Flush();
		}
		return;
	}

	DrawingEngine* drawingEngine = fWindow->GetDrawingEngine();
	if (!drawingEngine) {
		// ?!?
		debug_printf("ServerWindow %s: no drawing engine!!\n", Title());
		if (link.NeedsReply()) {
			// the client is now blocking and waiting for a reply!
			fLink.StartMessage(B_ERROR);
			fLink.Flush();
		}
		return;
	}

	_UpdateCurrentDrawingRegion();
	if (fCurrentDrawingRegion.CountRects() <= 0) {
		DTRACE(("ServerWindow %s: _DispatchViewDrawingMessage(): View: %s, "
			"INVALID CLIPPING!\n", Title(), fCurrentView->Name()));
		if (link.NeedsReply()) {
			// the client is now blocking and waiting for a reply!
			fLink.StartMessage(B_ERROR);
			fLink.Flush();
		}
		return;
	}

	drawingEngine->LockParallelAccess();
	// NOTE: the region is not copied, Painter keeps a pointer,
	// that's why you need to use the clipping only for as long
	// as you have it locked
	drawingEngine->ConstrainClippingRegion(&fCurrentDrawingRegion);

	switch (code) {
		case AS_STROKE_LINE:
		{
			ViewStrokeLineInfo info;
			if (link.Read<ViewStrokeLineInfo>(&info) != B_OK)
				break;

			DTRACE(("ServerWindow %s: Message AS_STROKE_LINE: View: %s -> "
				"BPoint(%.1f, %.1f) - BPoint(%.1f, %.1f)\n", Title(),
					fCurrentView->Name(),
					info.startPoint.x, info.startPoint.y,
					info.endPoint.x, info.endPoint.y));

			BPoint penPos = info.endPoint;
			fCurrentView->ConvertToScreenForDrawing(&info.startPoint);
			fCurrentView->ConvertToScreenForDrawing(&info.endPoint);
			drawingEngine->StrokeLine(info.startPoint, info.endPoint);

			// We update the pen here because many DrawingEngine calls which
			// do not update the pen position actually call StrokeLine

			// TODO: Decide where to put this, for example, it cannot be done
			// for DrawString(), also there needs to be a decision, if penlocation
			// is in View coordinates (I think it should be) or in screen coordinates.
			fCurrentView->CurrentState()->SetPenLocation(penPos);
			break;
		}
		case AS_VIEW_INVERT_RECT:
		{
			BRect rect;
			if (link.Read<BRect>(&rect) != B_OK)
				break;

			DTRACE(("ServerWindow %s: Message AS_INVERT_RECT: View: %s -> "
				"BRect(%.1f, %.1f, %.1f, %.1f)\n", Title(),
				fCurrentView->Name(), rect.left, rect.top, rect.right,
				rect.bottom));

			fCurrentView->ConvertToScreenForDrawing(&rect);
			drawingEngine->InvertRect(rect);
			break;
		}
		case AS_STROKE_RECT:
		{
			BRect rect;
			if (link.Read<BRect>(&rect) != B_OK)
				break;

			DTRACE(("ServerWindow %s: Message AS_STROKE_RECT: View: %s -> "
				"BRect(%.1f, %.1f, %.1f, %.1f)\n", Title(),
				fCurrentView->Name(), rect.left, rect.top, rect.right,
				rect.bottom));

			fCurrentView->ConvertToScreenForDrawing(&rect);
			drawingEngine->StrokeRect(rect);
			break;
		}
		case AS_FILL_RECT:
		{
			BRect rect;
			if (link.Read<BRect>(&rect) != B_OK)
				break;

			DTRACE(("ServerWindow %s: Message AS_FILL_RECT: View: %s -> "
				"BRect(%.1f, %.1f, %.1f, %.1f)\n", Title(),
				fCurrentView->Name(), rect.left, rect.top, rect.right,
				rect.bottom));

			fCurrentView->ConvertToScreenForDrawing(&rect);
			drawingEngine->FillRect(rect);
			break;
		}
		case AS_FILL_RECT_GRADIENT:
		{
			BRect rect;
			link.Read<BRect>(&rect);
			BGradient* gradient;
			if (link.ReadGradient(&gradient) != B_OK)
				break;

			GTRACE(("ServerWindow %s: Message AS_FILL_RECT_GRADIENT: View: %s -> "
				"BRect(%.1f, %.1f, %.1f, %.1f)\n", Title(),
				fCurrentView->Name(), rect.left, rect.top, rect.right,
				rect.bottom));

			fCurrentView->ConvertToScreenForDrawing(&rect);
			fCurrentView->ConvertToScreenForDrawing(gradient);
			drawingEngine->FillRect(rect, *gradient);
			break;
		}
		case AS_VIEW_DRAW_BITMAP:
		{
			ViewDrawBitmapInfo info;
			if (link.Read<ViewDrawBitmapInfo>(&info) != B_OK)
				break;

#if 0
			if (strcmp(fServerApp->SignatureLeaf(), "x-vnd.videolan-vlc") == 0)
				options |= B_FILTER_BITMAP_BILINEAR;
#endif

			ServerBitmap* bitmap = fServerApp->FindBitmap(info.bitmapToken);
			if (bitmap) {

				DTRACE(("ServerWindow %s: Message AS_VIEW_DRAW_BITMAP: "
					"View: %s, bitmap: %ld (size %ld x %ld), "
					"BRect(%.1f, %.1f, %.1f, %.1f) -> "
					"BRect(%.1f, %.1f, %.1f, %.1f)\n",
					fTitle, fCurrentView->Name(), info.bitmapToken,
					bitmap->Width(), bitmap->Height(),
					info.bitmapRect.left, info.bitmapRect.top,
					info.bitmapRect.right, info.bitmapRect.bottom,
					info.viewRect.left, info.viewRect.top,
					info.viewRect.right, info.viewRect.bottom));

				fCurrentView->ConvertToScreenForDrawing(&info.viewRect);

				drawingEngine->DrawBitmap(bitmap, info.bitmapRect,
					info.viewRect, info.options);
			}

			break;
		}
		case AS_STROKE_ARC:
		case AS_FILL_ARC:
		{
			DTRACE(("ServerWindow %s: Message AS_STROKE/FILL_ARC\n", Title()));

			float angle, span;
			BRect r;

			link.Read<BRect>(&r);
			link.Read<float>(&angle);
			if (link.Read<float>(&span) != B_OK)
				break;

			fCurrentView->ConvertToScreenForDrawing(&r);
			drawingEngine->DrawArc(r, angle, span, code == AS_FILL_ARC);
			break;
		}
		case AS_FILL_ARC_GRADIENT:
		{
			GTRACE(("ServerWindow %s: Message AS_FILL_ARC_GRADIENT\n",
				Title()));

			float angle, span;
			BRect r;
			link.Read<BRect>(&r);
			link.Read<float>(&angle);
			link.Read<float>(&span);
			BGradient* gradient;
			if (link.ReadGradient(&gradient) != B_OK)
				break;
			fCurrentView->ConvertToScreenForDrawing(&r);
			fCurrentView->ConvertToScreenForDrawing(gradient);
			drawingEngine->FillArc(r, angle, span, *gradient);
			break;
		}
		case AS_STROKE_BEZIER:
		case AS_FILL_BEZIER:
		{
			DTRACE(("ServerWindow %s: Message AS_STROKE/FILL_BEZIER\n",
				Title()));

			BPoint pts[4];
			status_t status;
			for (int32 i = 0; i < 4; i++) {
				status = link.Read<BPoint>(&(pts[i]));
				fCurrentView->ConvertToScreenForDrawing(&pts[i]);
			}
			if (status != B_OK)
				break;

			drawingEngine->DrawBezier(pts, code == AS_FILL_BEZIER);
			break;
		}
		case AS_FILL_BEZIER_GRADIENT:
		{
			GTRACE(("ServerWindow %s: Message AS_FILL_BEZIER_GRADIENT\n",
				Title()));

			BPoint pts[4];
			for (int32 i = 0; i < 4; i++) {
				link.Read<BPoint>(&(pts[i]));
				fCurrentView->ConvertToScreenForDrawing(&pts[i]);
			}
			BGradient* gradient;
			if (link.ReadGradient(&gradient) != B_OK)
				break;
			fCurrentView->ConvertToScreenForDrawing(gradient);
			drawingEngine->FillBezier(pts, *gradient);
			break;
		}
		case AS_STROKE_ELLIPSE:
		case AS_FILL_ELLIPSE:
		{
			DTRACE(("ServerWindow %s: Message AS_STROKE/FILL_ELLIPSE\n",
				Title()));

			BRect rect;
			if (link.Read<BRect>(&rect) != B_OK)
				break;

			fCurrentView->ConvertToScreenForDrawing(&rect);
			drawingEngine->DrawEllipse(rect, code == AS_FILL_ELLIPSE);
			break;
		}
		case AS_FILL_ELLIPSE_GRADIENT:
		{
			GTRACE(("ServerWindow %s: Message AS_FILL_ELLIPSE_GRADIENT\n",
				Title()));

			BRect rect;
			link.Read<BRect>(&rect);
			BGradient* gradient;
			if (link.ReadGradient(&gradient) != B_OK)
				break;
			fCurrentView->ConvertToScreenForDrawing(&rect);
			fCurrentView->ConvertToScreenForDrawing(gradient);
			drawingEngine->FillEllipse(rect, *gradient);
			break;
		}
		case AS_STROKE_ROUNDRECT:
		case AS_FILL_ROUNDRECT:
		{
			DTRACE(("ServerWindow %s: Message AS_STROKE/FILL_ROUNDRECT\n",
				Title()));

			BRect rect;
			float xrad,yrad;
			link.Read<BRect>(&rect);
			link.Read<float>(&xrad);
			if (link.Read<float>(&yrad) != B_OK)
				break;

			fCurrentView->ConvertToScreenForDrawing(&rect);
			drawingEngine->DrawRoundRect(rect, xrad, yrad,
				code == AS_FILL_ROUNDRECT);
			break;
		}
		case AS_FILL_ROUNDRECT_GRADIENT:
		{
			GTRACE(("ServerWindow %s: Message AS_FILL_ROUNDRECT_GRADIENT\n",
				Title()));

			BRect rect;
			float xrad,yrad;
			link.Read<BRect>(&rect);
			link.Read<float>(&xrad);
			link.Read<float>(&yrad);
			BGradient* gradient;
			if (link.ReadGradient(&gradient) != B_OK)
				break;
			fCurrentView->ConvertToScreenForDrawing(&rect);
			fCurrentView->ConvertToScreenForDrawing(gradient);
			drawingEngine->FillRoundRect(rect, xrad, yrad, *gradient);
			break;
		}
		case AS_STROKE_TRIANGLE:
		case AS_FILL_TRIANGLE:
		{
			DTRACE(("ServerWindow %s: Message AS_STROKE/FILL_TRIANGLE\n",
				Title()));

			BPoint pts[3];
			BRect rect;

			for (int32 i = 0; i < 3; i++) {
				link.Read<BPoint>(&(pts[i]));
				fCurrentView->ConvertToScreenForDrawing(&pts[i]);
			}

			if (link.Read<BRect>(&rect) != B_OK)
				break;

			fCurrentView->ConvertToScreenForDrawing(&rect);
			drawingEngine->DrawTriangle(pts, rect, code == AS_FILL_TRIANGLE);
			break;
		}
		case AS_FILL_TRIANGLE_GRADIENT:
		{
			DTRACE(("ServerWindow %s: Message AS_FILL_TRIANGLE_GRADIENT\n",
				Title()));

			BPoint pts[3];
			BRect rect;
			for (int32 i = 0; i < 3; i++) {
				link.Read<BPoint>(&(pts[i]));
				fCurrentView->ConvertToScreenForDrawing(&pts[i]);
			}
			link.Read<BRect>(&rect);
			BGradient* gradient;
			if (link.ReadGradient(&gradient) != B_OK)
				break;
			fCurrentView->ConvertToScreenForDrawing(&rect);
			fCurrentView->ConvertToScreenForDrawing(gradient);
			drawingEngine->FillTriangle(pts, rect, *gradient);
			break;
		}
		case AS_STROKE_POLYGON:
		case AS_FILL_POLYGON:
		{
			DTRACE(("ServerWindow %s: Message AS_STROKE/FILL_POLYGON\n",
				Title()));

			BRect polyFrame;
			bool isClosed = true;
			int32 pointCount;

			link.Read<BRect>(&polyFrame);
			if (code == AS_STROKE_POLYGON)
				link.Read<bool>(&isClosed);
			link.Read<int32>(&pointCount);

			BPoint* pointList = new(nothrow) BPoint[pointCount];
			if (link.Read(pointList, pointCount * sizeof(BPoint)) >= B_OK) {
				for (int32 i = 0; i < pointCount; i++)
					fCurrentView->ConvertToScreenForDrawing(&pointList[i]);
				fCurrentView->ConvertToScreenForDrawing(&polyFrame);

				drawingEngine->DrawPolygon(pointList, pointCount, polyFrame,
					code == AS_FILL_POLYGON, isClosed && pointCount > 2);
			}
			delete[] pointList;
			break;
		}
		case AS_FILL_POLYGON_GRADIENT:
		{
			DTRACE(("ServerWindow %s: Message AS_FILL_POLYGON_GRADIENT\n",
				Title()));

			BRect polyFrame;
			bool isClosed = true;
			int32 pointCount;
			link.Read<BRect>(&polyFrame);
			link.Read<int32>(&pointCount);

			BPoint* pointList = new(nothrow) BPoint[pointCount];
			BGradient* gradient;
			if (link.Read(pointList, pointCount * sizeof(BPoint)) >= B_OK
				&& link.ReadGradient(&gradient) >= B_OK) {
				for (int32 i = 0; i < pointCount; i++)
					fCurrentView->ConvertToScreenForDrawing(&pointList[i]);
				fCurrentView->ConvertToScreenForDrawing(&polyFrame);
				fCurrentView->ConvertToScreenForDrawing(gradient);

				drawingEngine->FillPolygon(pointList, pointCount,
					polyFrame, *gradient, isClosed && pointCount > 2);
			}
			delete[] pointList;
			break;
		}
		case AS_STROKE_SHAPE:
		case AS_FILL_SHAPE:
		{
			DTRACE(("ServerWindow %s: Message AS_STROKE/FILL_SHAPE\n",
				Title()));

			BRect shapeFrame;
			int32 opCount;
			int32 ptCount;

			link.Read<BRect>(&shapeFrame);
			link.Read<int32>(&opCount);
			link.Read<int32>(&ptCount);

			uint32* opList = new(nothrow) uint32[opCount];
			BPoint* ptList = new(nothrow) BPoint[ptCount];
			if (link.Read(opList, opCount * sizeof(uint32)) >= B_OK &&
				link.Read(ptList, ptCount * sizeof(BPoint)) >= B_OK) {

				// this might seem a bit weird, but under R5, the shapes
				// are always offset by the current pen location
				BPoint penLocation
					= fCurrentView->CurrentState()->PenLocation();
				for (int32 i = 0; i < ptCount; i++) {
					ptList[i] += penLocation;
					fCurrentView->ConvertToScreenForDrawing(&ptList[i]);
				}

				drawingEngine->DrawShape(shapeFrame, opCount, opList, ptCount,
					ptList, code == AS_FILL_SHAPE);
			}

			delete[] opList;
			delete[] ptList;
			break;
		}
		case AS_FILL_SHAPE_GRADIENT:
		{
			DTRACE(("ServerWindow %s: Message AS_FILL_SHAPE_GRADIENT\n",
				Title()));

			BRect shapeFrame;
			int32 opCount;
			int32 ptCount;

			link.Read<BRect>(&shapeFrame);
			link.Read<int32>(&opCount);
			link.Read<int32>(&ptCount);

			uint32* opList = new(nothrow) uint32[opCount];
			BPoint* ptList = new(nothrow) BPoint[ptCount];
			BGradient* gradient;
			if (link.Read(opList, opCount * sizeof(uint32)) >= B_OK
				&& link.Read(ptList, ptCount * sizeof(BPoint)) >= B_OK
				&& link.ReadGradient(&gradient) >= B_OK) {

				// this might seem a bit weird, but under R5, the shapes
				// are always offset by the current pen location
				BPoint penLocation
					= fCurrentView->CurrentState()->PenLocation();
				for (int32 i = 0; i < ptCount; i++) {
					ptList[i] += penLocation;
					fCurrentView->ConvertToScreenForDrawing(&ptList[i]);
				}
				fCurrentView->ConvertToScreenForDrawing(gradient);
				drawingEngine->FillShape(shapeFrame, opCount, opList,
					ptCount, ptList, *gradient);
			}

			delete[] opList;
			delete[] ptList;
			break;
		}
		case AS_FILL_REGION:
		{
			DTRACE(("ServerWindow %s: Message AS_FILL_REGION\n", Title()));

			BRegion region;
			if (link.ReadRegion(&region) < B_OK)
				break;

			fCurrentView->ConvertToScreenForDrawing(&region);
			drawingEngine->FillRegion(region);

			break;
		}
		case AS_FILL_REGION_GRADIENT:
		{
			DTRACE(("ServerWindow %s: Message AS_FILL_REGION_GRADIENT\n",
				Title()));

			BRegion region;
			link.ReadRegion(&region);

			BGradient* gradient;
			if (link.ReadGradient(&gradient) != B_OK)
				break;

			fCurrentView->ConvertToScreenForDrawing(&region);
			fCurrentView->ConvertToScreenForDrawing(gradient);
			drawingEngine->FillRegion(region, *gradient);
			break;
		}
		case AS_STROKE_LINEARRAY:
		{
			DTRACE(("ServerWindow %s: Message AS_STROKE_LINEARRAY\n",
				Title()));

			// Attached Data:
			// 1) int32 Number of lines in the array
			// 2) LineArrayData

			int32 lineCount;
			if (link.Read<int32>(&lineCount) != B_OK || lineCount <= 0)
				break;

			// To speed things up, try to use a stack allocation and only
			// fall back to the heap if there are enough lines...
			ViewLineArrayInfo* lineData;
			const int32 kStackBufferLineDataCount = 64;
			ViewLineArrayInfo lineDataStackBuffer[kStackBufferLineDataCount];
			if (lineCount > kStackBufferLineDataCount) {
				lineData = new(std::nothrow) ViewLineArrayInfo[lineCount];
				if (lineData == NULL)
					break;
			} else
				lineData = lineDataStackBuffer;

			// Read them all in one go
			size_t dataSize = lineCount * sizeof(ViewLineArrayInfo);
			if (link.Read(lineData, dataSize) != B_OK) {
				if (lineData != lineDataStackBuffer)
					delete[] lineData;
				break;
			}

			// Convert to screen coords and draw
			for (int32 i = 0; i < lineCount; i++) {
				fCurrentView->ConvertToScreenForDrawing(
					&lineData[i].startPoint);
				fCurrentView->ConvertToScreenForDrawing(
					&lineData[i].endPoint);
			}
			drawingEngine->StrokeLineArray(lineCount, lineData);

			if (lineData != lineDataStackBuffer)
				delete[] lineData;
			break;
		}
		case AS_DRAW_STRING:
		case AS_DRAW_STRING_WITH_DELTA:
		{
			ViewDrawStringInfo info;
			if (link.Read<ViewDrawStringInfo>(&info) != B_OK)
				break;

			const ssize_t kMaxStackStringSize = 4096;
			char stackString[kMaxStackStringSize];
			char* string = stackString;
			if (info.stringLength >= kMaxStackStringSize) {
				// NOTE: Careful, the + 1 is for termination!
				string = (char*)malloc((info.stringLength + 1 + 63) / 64 * 64);
				if (string == NULL)
					break;
			}

			escapement_delta* delta = NULL;
			if (code == AS_DRAW_STRING_WITH_DELTA) {
				// In this case, info.delta will contain valid values.
				delta = &info.delta;
			}

			if (link.Read(string, info.stringLength) != B_OK) {
				if (string != stackString)
					free(string);
				break;
			}
			// Terminate the string, if nothing else, it's important
			// for the DTRACE call below...
			string[info.stringLength] = '\0';

			DTRACE(("ServerWindow %s: Message AS_DRAW_STRING, View: %s "
				"-> %s\n", Title(), fCurrentView->Name(), string));

			fCurrentView->ConvertToScreenForDrawing(&info.location);
			BPoint penLocation = drawingEngine->DrawString(string,
				info.stringLength, info.location, delta);

			fCurrentView->ConvertFromScreenForDrawing(&penLocation);
			fCurrentView->CurrentState()->SetPenLocation(penLocation);

			if (string != stackString)
				free(string);
			break;
		}

		case AS_VIEW_DRAW_PICTURE:
		{
			int32 token;
			if (link.Read<int32>(&token) == B_OK) {
				BPoint where;
				link.Read<BPoint>(&where);

				ServerPicture *picture = App()->FindPicture(token);
				if (picture != NULL) {
					fCurrentView->PushState();
					fCurrentView->SetDrawingOrigin(where);
					fCurrentView->PushState();
					picture->Play(fCurrentView);
					fCurrentView->PopState();
					fCurrentView->PopState();
				}
			}
			break;
		}

		default:
			BString codeString;
			string_for_message_code(code, codeString);
			debug_printf("ServerWindow %s received unexpected code: %s\n",
				Title(), codeString.String());

			if (link.NeedsReply()) {
				// the client is now blocking and waiting for a reply!
				fLink.StartMessage(B_ERROR);
				fLink.Flush();
			}
			break;
	}

	drawingEngine->UnlockParallelAccess();
}


bool
ServerWindow::_DispatchPictureMessage(int32 code, BPrivate::LinkReceiver &link)
{
	ServerPicture *picture = fCurrentView->Picture();
	if (picture == NULL)
		return false;

	switch (code) {
		case AS_VIEW_SET_ORIGIN:
		{
			float x, y;
			link.Read<float>(&x);
			link.Read<float>(&y);

			picture->WriteSetOrigin(BPoint(x, y));
			break;
		}

		case AS_VIEW_INVERT_RECT:
		{
			BRect rect;
			link.Read<BRect>(&rect);
			picture->WriteInvertRect(rect);

			break;
		}

		case AS_VIEW_PUSH_STATE:
		{
			picture->WritePushState();
			break;
		}

		case AS_VIEW_POP_STATE:
		{
			picture->WritePopState();
			break;
		}

		case AS_VIEW_SET_DRAWING_MODE:
		{
			int8 drawingMode;
			link.Read<int8>(&drawingMode);

			picture->WriteSetDrawingMode((drawing_mode)drawingMode);

			fCurrentView->CurrentState()->SetDrawingMode((drawing_mode)drawingMode);
			fWindow->GetDrawingEngine()->SetDrawingMode((drawing_mode)drawingMode);
			break;
		}

		case AS_VIEW_SET_PEN_LOC:
		{
			BPoint location;
			link.Read<BPoint>(&location);
			picture->WriteSetPenLocation(location);

			fCurrentView->CurrentState()->SetPenLocation(location);
			break;
		}
		case AS_VIEW_SET_PEN_SIZE:
		{
			float penSize;
			link.Read<float>(&penSize);
			picture->WriteSetPenSize(penSize);

			fCurrentView->CurrentState()->SetPenSize(penSize);
			fWindow->GetDrawingEngine()->SetPenSize(
				fCurrentView->CurrentState()->PenSize());
			break;
		}

		case AS_VIEW_SET_LINE_MODE:
		{

			ViewSetLineModeInfo info;
			link.Read<ViewSetLineModeInfo>(&info);

			picture->WriteSetLineMode(info.lineCap, info.lineJoin,
				info.miterLimit);

			fCurrentView->CurrentState()->SetLineCapMode(info.lineCap);
			fCurrentView->CurrentState()->SetLineJoinMode(info.lineJoin);
			fCurrentView->CurrentState()->SetMiterLimit(info.miterLimit);

			fWindow->GetDrawingEngine()->SetStrokeMode(info.lineCap,
				info.lineJoin, info.miterLimit);
			break;
		}
		case AS_VIEW_SET_SCALE:
		{
			float scale;
			link.Read<float>(&scale);
			picture->WriteSetScale(scale);

			fCurrentView->SetScale(scale);
			_UpdateDrawState(fCurrentView);
			break;
		}

		case AS_VIEW_SET_PATTERN:
		{
			pattern pat;
			link.Read(&pat, sizeof(pattern));
			picture->WriteSetPattern(pat);
			break;
		}

		case AS_VIEW_SET_FONT_STATE:
		{
			picture->SetFontFromLink(link);
			break;
		}

		case AS_FILL_RECT:
		case AS_STROKE_RECT:
		{
			BRect rect;
			link.Read<BRect>(&rect);

			picture->WriteDrawRect(rect, code == AS_FILL_RECT);
			break;
		}

		case AS_FILL_REGION:
		{
			// There is no B_PIC_FILL_REGION op, we have to
			// implement it using B_PIC_FILL_RECT
			BRegion region;
			if (link.ReadRegion(&region) < B_OK)
				break;
			for (int32 i = 0; i < region.CountRects(); i++)
				picture->WriteDrawRect(region.RectAt(i), true);
			break;
		}

		case AS_STROKE_ROUNDRECT:
		case AS_FILL_ROUNDRECT:
		{
			BRect rect;
			link.Read<BRect>(&rect);

			BPoint radii;
			link.Read<float>(&radii.x);
			link.Read<float>(&radii.y);

			picture->WriteDrawRoundRect(rect, radii, code == AS_FILL_ROUNDRECT);
			break;
		}

		case AS_STROKE_ELLIPSE:
		case AS_FILL_ELLIPSE:
		{
			BRect rect;
			link.Read<BRect>(&rect);
			picture->WriteDrawEllipse(rect, code == AS_FILL_ELLIPSE);
			break;
		}

		case AS_STROKE_ARC:
		case AS_FILL_ARC:
		{
			BRect rect;
			link.Read<BRect>(&rect);
			float startTheta, arcTheta;
			link.Read<float>(&startTheta);
			link.Read<float>(&arcTheta);

			BPoint radii((rect.Width() + 1) / 2, (rect.Height() + 1) / 2);
			BPoint center = rect.LeftTop() + radii;

			picture->WriteDrawArc(center, radii, startTheta, arcTheta, code == AS_FILL_ARC);
			break;
		}

		case AS_STROKE_TRIANGLE:
		case AS_FILL_TRIANGLE:
		{
			// There is no B_PIC_FILL/STROKE_TRIANGLE op,
			// we implement it using B_PIC_FILL/STROKE_POLYGON
			BPoint points[3];

			for (int32 i = 0; i < 3; i++) {
				link.Read<BPoint>(&(points[i]));
			}

			BRect rect;
			link.Read<BRect>(&rect);

			picture->WriteDrawPolygon(3, points,
					true, code == AS_FILL_TRIANGLE);
			break;
		}
		case AS_STROKE_POLYGON:
		case AS_FILL_POLYGON:
		{
			BRect polyFrame;
			bool isClosed = true;
			int32 pointCount;
			const bool fill = (code == AS_FILL_POLYGON);

			link.Read<BRect>(&polyFrame);
			if (code == AS_STROKE_POLYGON)
				link.Read<bool>(&isClosed);
			link.Read<int32>(&pointCount);

			BPoint* pointList = new(nothrow) BPoint[pointCount];
			if (link.Read(pointList, pointCount * sizeof(BPoint)) >= B_OK) {
				picture->WriteDrawPolygon(pointCount, pointList,
					isClosed && pointCount > 2, fill);
			}
			delete[] pointList;
			break;
		}

		case AS_STROKE_BEZIER:
		case AS_FILL_BEZIER:
		{
			BPoint points[4];
			for (int32 i = 0; i < 4; i++) {
				link.Read<BPoint>(&(points[i]));
			}
			picture->WriteDrawBezier(points, code == AS_FILL_BEZIER);
			break;
		}

		case AS_STROKE_LINE:
		{
			ViewStrokeLineInfo info;
			link.Read<ViewStrokeLineInfo>(&info);

			picture->WriteStrokeLine(info.startPoint, info.endPoint);
			break;
		}

		case AS_STROKE_LINEARRAY:
		{
			int32 lineCount;
			if (link.Read<int32>(&lineCount) != B_OK || lineCount <= 0)
				break;

			// To speed things up, try to use a stack allocation and only
			// fall back to the heap if there are enough lines...
			ViewLineArrayInfo* lineData;
			const int32 kStackBufferLineDataCount = 64;
			ViewLineArrayInfo lineDataStackBuffer[kStackBufferLineDataCount];
			if (lineCount > kStackBufferLineDataCount) {
				lineData = new(std::nothrow) ViewLineArrayInfo[lineCount];
				if (lineData == NULL)
					break;
			} else
				lineData = lineDataStackBuffer;

			// Read them all in one go
			size_t dataSize = lineCount * sizeof(ViewLineArrayInfo);
			if (link.Read(lineData, dataSize) != B_OK) {
				if (lineData != lineDataStackBuffer)
					delete[] lineData;
				break;
			}

			picture->WritePushState();

			for (int32 i = 0; i < lineCount; i++) {
				picture->WriteSetHighColor(lineData[i].color);
				picture->WriteStrokeLine(lineData[i].startPoint,
					lineData[i].endPoint);
			}

			picture->WritePopState();

			if (lineData != lineDataStackBuffer)
				delete[] lineData;
			break;
		}

		case AS_VIEW_SET_LOW_COLOR:
		case AS_VIEW_SET_HIGH_COLOR:
		{
			rgb_color color;
			link.Read(&color, sizeof(rgb_color));

			if (code == AS_VIEW_SET_HIGH_COLOR) {
				picture->WriteSetHighColor(color);
				fCurrentView->CurrentState()->SetHighColor(color);
				fWindow->GetDrawingEngine()->SetHighColor(color);
			} else {
				picture->WriteSetLowColor(color);
				fCurrentView->CurrentState()->SetLowColor(color);
				fWindow->GetDrawingEngine()->SetLowColor(color);
			}
		}	break;

		case AS_DRAW_STRING:
		case AS_DRAW_STRING_WITH_DELTA:
		{
			ViewDrawStringInfo info;
			if (link.Read<ViewDrawStringInfo>(&info) != B_OK)
				break;

			char* string = (char*)malloc(info.stringLength + 1);
			if (string == NULL)
				break;

			if (code != AS_DRAW_STRING_WITH_DELTA) {
				// In this case, info.delta will NOT contain valid values.
				info.delta = (escapement_delta){ 0, 0 };
			}

			if (link.Read(string, info.stringLength) != B_OK) {
				free(string);
				break;
			}
			// Terminate the string
			string[info.stringLength] = '\0';

			picture->WriteDrawString(info.location, string, info.stringLength,
				info.delta);

			free(string);
			break;
		}

		case AS_STROKE_SHAPE:
		case AS_FILL_SHAPE:
		{
			BRect shapeFrame;
			int32 opCount;
			int32 ptCount;

			link.Read<BRect>(&shapeFrame);
			link.Read<int32>(&opCount);
			link.Read<int32>(&ptCount);

			uint32 *opList = new(nothrow) uint32[opCount];
			BPoint *ptList = new(nothrow) BPoint[ptCount];
			if (opList != NULL && ptList != NULL
				&& link.Read(opList, opCount * sizeof(uint32)) >= B_OK
				&& link.Read(ptList, ptCount * sizeof(BPoint)) >= B_OK) {

				// This might seem a bit weird, but under R5, the shapes
				// are always offset by the current pen location
				BPoint penLocation = fCurrentView->CurrentState()->PenLocation();
				for (int32 i = 0; i < ptCount; i++) {
					ptList[i] += penLocation;
				}
				const bool fill = (code == AS_FILL_SHAPE);
				picture->WriteDrawShape(opCount, opList, ptCount, ptList, fill);
			}
			delete[] opList;
			delete[] ptList;

			break;
		}

		case AS_VIEW_DRAW_BITMAP:
		{
			ViewDrawBitmapInfo info;
			link.Read<ViewDrawBitmapInfo>(&info);

			ServerBitmap *bitmap = App()->FindBitmap(info.bitmapToken);
			if (bitmap == NULL)
				break;

			picture->WriteDrawBitmap(info.bitmapRect, info.viewRect,
				bitmap->Width(), bitmap->Height(), bitmap->BytesPerRow(),
				bitmap->ColorSpace(), info.options, bitmap->Bits(),
				bitmap->BitsLength());

			break;
		}

		case AS_VIEW_DRAW_PICTURE:
		{
			int32 token;
			if (link.Read<int32>(&token) == B_OK) {
				BPoint where;
				link.Read<BPoint>(&where);

				ServerPicture *pictureToDraw = App()->FindPicture(token);
				if (picture != NULL) {
					// We need to make a copy of the picture, since it can change
					// after it has been drawn
					ServerPicture *copy = App()->CreatePicture(pictureToDraw);
					picture->NestPicture(copy);
					picture->WriteDrawPicture(where, copy->Token());
				}
			}
			break;
		}

		case AS_VIEW_SET_CLIP_REGION:
		{
			int32 rectCount;
			status_t status = link.Read<int32>(&rectCount);
				// a negative count means no
				// region for the current draw state,
				// but an *empty* region is actually valid!
				// even if it means no drawing is allowed

			if (status < B_OK)
				break;

			if (rectCount >= 0) {
				// we are supposed to set the clipping region
				BRegion region;
				if (rectCount > 0 && link.ReadRegion(&region) < B_OK)
					break;
				picture->WriteSetClipping(region);
			} else {
				// we are supposed to clear the clipping region
				picture->WriteClearClipping();
			}

			break;
		}
		case AS_VIEW_BEGIN_PICTURE:
		{
			ServerPicture *newPicture = App()->CreatePicture();
			newPicture->Usurp(picture);
			newPicture->SyncState(fCurrentView);
			fCurrentView->SetPicture(newPicture);

			break;
		}

		case AS_VIEW_APPEND_TO_PICTURE:
		{
			int32 pictureToken;
			link.Read<int32>(&pictureToken);
			ServerPicture *appendPicture = App()->FindPicture(pictureToken);
			if (appendPicture) {
				//picture->SyncState(fCurrentView);
				appendPicture->Usurp(picture);
			}
			fCurrentView->SetPicture(appendPicture);
				// we don't care if it's NULL
			break;
		}

		case AS_VIEW_END_PICTURE:
		{
			ServerPicture *steppedDown = picture->StepDown();
			fCurrentView->SetPicture(steppedDown);
			fLink.StartMessage(B_OK);
			fLink.Attach<int32>(picture->Token());
			fLink.Flush();
			return true;
		}
/*
		case AS_VIEW_SET_BLENDING_MODE:
		{
			ViewBlendingModeInfo info;
			link.Read<ViewBlendingModeInfo>(&info);

			picture->BeginOp(B_PIC_SET_BLENDING_MODE);
			picture->AddInt16((int16)info.sourceAlpha);
			picture->AddInt16((int16)info.alphaFunction);
			picture->EndOp();

			fCurrentView->CurrentState()->SetBlendingMode(info.sourceAlpha,
				info.alphaFunction);
			fWindow->GetDrawingEngine()->SetBlendingMode(info.sourceAlpha,
				info.alphaFunction);
			break;
		}*/
		default:
			return false;
	}

	if (link.NeedsReply()) {
		fLink.StartMessage(B_ERROR);
		fLink.Flush();
	}
	return true;
}


/*!
	\brief Message-dispatching loop for the ServerWindow

	Watches the ServerWindow's message port and dispatches as necessary
*/
void
ServerWindow::_MessageLooper()
{
	// Send a reply to our window - it is expecting fMessagePort
	// port and some other info.

	fLink.StartMessage(B_OK);
	fLink.Attach<port_id>(fMessagePort);

	int32 minWidth, maxWidth, minHeight, maxHeight;
	fWindow->GetSizeLimits(&minWidth, &maxWidth, &minHeight, &maxHeight);

	fLink.Attach<BRect>(fWindow->Frame());
	fLink.Attach<float>((float)minWidth);
	fLink.Attach<float>((float)maxWidth);
	fLink.Attach<float>((float)minHeight);
	fLink.Attach<float>((float)maxHeight);
	fLink.Flush();

	BPrivate::LinkReceiver& receiver = fLink.Receiver();
	bool quitLoop = false;

	while (!quitLoop) {
		//STRACE(("info: ServerWindow::MonitorWin listening on port %ld.\n",
		//	fMessagePort));

		int32 code;
		status_t status = receiver.GetNextMessage(code);
		if (status < B_OK) {
			// that shouldn't happen, it's our port
			printf("Someone deleted our message port!\n");

			// try to let our client die happily
			NotifyQuitRequested();
			break;
		}

#ifdef PROFILE_MESSAGE_LOOP
		bigtime_t start = system_time();
#endif

		Lock();

#ifdef PROFILE_MESSAGE_LOOP
		bigtime_t diff = system_time() - start;
		if (diff > 10000)
			printf("ServerWindow %s: lock acquisition took %Ld usecs\n", Title(), diff);
#endif

		int32 messagesProcessed = 0;
		bool lockedDesktop = false;
		bool needsAllWindowsLocked = false;

		while (true) {
			if (code == AS_DELETE_WINDOW || code == kMsgQuitLooper) {
				// this means the client has been killed
				DTRACE(("ServerWindow %s received 'AS_DELETE_WINDOW' message code\n",
					Title()));

				if (code == AS_DELETE_WINDOW) {
					fLink.StartMessage(B_OK);
					fLink.Flush();
				}

				if (lockedDesktop)
					fDesktop->UnlockSingleWindow();

				quitLoop = true;

				// ServerWindow's destructor takes care of pulling this object off the desktop.
				ASSERT(fWindow->IsHidden());
				break;
			}

			needsAllWindowsLocked = _MessageNeedsAllWindowsLocked(code);

			if (!lockedDesktop && !needsAllWindowsLocked) {
				// only lock it once
				fDesktop->LockSingleWindow();
				lockedDesktop = true;
			} else if (lockedDesktop && !needsAllWindowsLocked) {
				// nothing to do
			} else if (needsAllWindowsLocked) {
				if (lockedDesktop) {
					// unlock single before locking all
					fDesktop->UnlockSingleWindow();
					lockedDesktop = false;
				}
				fDesktop->LockAllWindows();
			}

			if (atomic_and(&fRedrawRequested, 0) != 0) {
#ifdef PROFILE_MESSAGE_LOOP
				bigtime_t redrawStart = system_time();
#endif
				fWindow->RedrawDirtyRegion();
#ifdef PROFILE_MESSAGE_LOOP
				diff = system_time() - redrawStart;
				atomic_add(&sRedrawProcessingTime.count, 1);
# ifndef HAIKU_TARGET_PLATFORM_LIBBE_TEST
				atomic_add64(&sRedrawProcessingTime.time, diff);
# else
				sRedrawProcessingTime.time += diff;
# endif
#endif
			}


#ifdef PROFILE_MESSAGE_LOOP
			bigtime_t dispatchStart = system_time();
#endif
			_DispatchMessage(code, receiver);

#ifdef PROFILE_MESSAGE_LOOP
			if (code >= 0 && code < AS_LAST_CODE) {
				diff = system_time() - dispatchStart;
				atomic_add(&sMessageProfile[code].count, 1);
#ifndef HAIKU_TARGET_PLATFORM_LIBBE_TEST
				atomic_add64(&sMessageProfile[code].time, diff);
#else
				sMessageProfile[code].time += diff;
#endif
				if (diff > 10000)
					printf("ServerWindow %s: message %ld took %Ld usecs\n", Title(), code, diff);
			}
#endif

			if (needsAllWindowsLocked)
				fDesktop->UnlockAllWindows();

			// only process up to 70 waiting messages at once (we have the Desktop locked)
			if (!receiver.HasMessages() || ++messagesProcessed > 70) {
				if (lockedDesktop)
					fDesktop->UnlockSingleWindow();
				break;
			}

			// next message
			status_t status = receiver.GetNextMessage(code);
			if (status < B_OK) {
				// that shouldn't happen, it's our port
				printf("Someone deleted our message port!\n");
				if (lockedDesktop)
					fDesktop->UnlockSingleWindow();

				// try to let our client die happily
				NotifyQuitRequested();
				break;
			}
		}

		Unlock();
	}

	// we were asked to quit the message loop - either on request or because of an error
	Quit();
		// does not return
}


status_t
ServerWindow::SendMessageToClient(const BMessage* msg, int32 target) const
{
	if (target == B_NULL_TOKEN)
		target = fClientToken;

	BMessenger reply;
	BMessage::Private messagePrivate((BMessage *)msg);
	return messagePrivate.SendMessage(fClientLooperPort, fClientTeam, target,
		0, false, reply);
}


Window*
ServerWindow::MakeWindow(BRect frame, const char* name,
	window_look look, window_feel feel, uint32 flags, uint32 workspace)
{
	// The non-offscreen ServerWindow uses the DrawingEngine instance from
	// the desktop.
	return new (nothrow) ::Window(frame, name, look, feel, flags,
		workspace, this, new (nothrow) DrawingEngine(fDesktop->HWInterface()));
}


status_t
ServerWindow::_EnableDirectWindowMode()
{
	if (fDirectWindowData != NULL) {
		// already in direct window mode
		return B_ERROR;
	}

	fDirectWindowData = new (nothrow) direct_window_data;
	if (fDirectWindowData == NULL)
		return B_NO_MEMORY;

	status_t status = fDirectWindowData->InitCheck();
	if (status < B_OK) {
		delete fDirectWindowData;
		fDirectWindowData = NULL;

		return status;
	}

	return B_OK;
}


void
ServerWindow::HandleDirectConnection(int32 bufferState, int32 driverState)
{
	STRACE(("HandleDirectConnection(bufferState = %ld, driverState = %ld)\n",
		bufferState, driverState));

	if (fDirectWindowData == NULL
		|| (!fDirectWindowData->started
			&& (bufferState & B_DIRECT_MODE_MASK) != B_DIRECT_START))
		return;

	// Don't issue a DirectConnected() notification
	// if the connection is stopped, and we are called
	// with bufferState == B_DIRECT_MODIFY.
	if ((fDirectWindowData->buffer_info->buffer_state & B_DIRECT_MODE_MASK) == B_DIRECT_STOP
		&& (bufferState & B_DIRECT_MODE_MASK) != B_DIRECT_START) {
		return;
	}

	fDirectWindowData->started = true;

	if (bufferState != -1)
		fDirectWindowData->buffer_info->buffer_state = (direct_buffer_state)bufferState;

	if (driverState != -1)
		fDirectWindowData->buffer_info->driver_state = (direct_driver_state)driverState;

	if ((bufferState & B_DIRECT_MODE_MASK) != B_DIRECT_STOP) {
		// TODO: Locking ?
		RenderingBuffer *buffer = fDesktop->HWInterface()->FrontBuffer();
		fDirectWindowData->buffer_info->bits = buffer->Bits();
		fDirectWindowData->buffer_info->pci_bits = NULL; // TODO
		fDirectWindowData->buffer_info->bytes_per_row = buffer->BytesPerRow();
		switch (buffer->ColorSpace()) {
			case B_RGB32:
			case B_RGBA32:
			case B_RGB32_BIG:
			case B_RGBA32_BIG:
				fDirectWindowData->buffer_info->bits_per_pixel = 32;
				break;
			case B_RGB24:
			case B_RGB24_BIG:
				fDirectWindowData->buffer_info->bits_per_pixel = 24;
				break;
			case B_RGB16:
			case B_RGB16_BIG:
			case B_RGB15:
			case B_RGB15_BIG:
				fDirectWindowData->buffer_info->bits_per_pixel = 16;
				break;
			case B_CMAP8:
			case B_GRAY8:
				fDirectWindowData->buffer_info->bits_per_pixel = 8;
				break;
			default:
				fprintf(stderr, "unknown colorspace in HandleDirectConnection()!\n");
				fDirectWindowData->buffer_info->bits_per_pixel = 0;
				break;
		}
		fDirectWindowData->buffer_info->pixel_format = buffer->ColorSpace();
		fDirectWindowData->buffer_info->layout = B_BUFFER_NONINTERLEAVED;
		fDirectWindowData->buffer_info->orientation = B_BUFFER_TOP_TO_BOTTOM; // TODO
		fDirectWindowData->buffer_info->window_bounds = to_clipping_rect(fWindow->Frame());

		// TODO: Review this
		const int32 kMaxClipRectsCount = (DIRECT_BUFFER_INFO_AREA_SIZE - sizeof(direct_buffer_info))
			/ sizeof(clipping_rect);

		// We just want the region inside the window, border excluded.
		BRegion clipRegion = fWindow->VisibleContentRegion();

		fDirectWindowData->buffer_info->clip_list_count = min_c(clipRegion.CountRects(),
			kMaxClipRectsCount);
		fDirectWindowData->buffer_info->clip_bounds = clipRegion.FrameInt();

		for (uint32 i = 0; i < fDirectWindowData->buffer_info->clip_list_count; i++)
			fDirectWindowData->buffer_info->clip_list[i] = clipRegion.RectAtInt(i);
	}

	// Releasing this sem causes the client to call BDirectWindow::DirectConnected()
	release_sem(fDirectWindowData->sem);

	// TODO: Waiting half a second in the ServerWindow thread is not a problem,
	// but since we are called from the Desktop's thread too, very bad things could happen.
	// Find some way to call this method only within ServerWindow's thread (messaging ?)
	status_t status;
	do {
		// TODO: The timeout is 3000000 usecs (3 seconds) on beos.
		// Test, but I think half a second is enough.
		status = acquire_sem_etc(fDirectWindowData->sem_ack, 1, B_TIMEOUT, 500000);
	} while (status == B_INTERRUPTED);

	if (status < B_OK) {
		// The client application didn't release the semaphore
		// within the given timeout. Or something else went wrong.
		// Deleting this member should make it crash.
		delete fDirectWindowData;
		fDirectWindowData = NULL;
	}
}


void
ServerWindow::_SetCurrentView(View* view)
{
	if (fCurrentView == view)
		return;

	fCurrentView = view;
	fCurrentDrawingRegionValid = false;
	_UpdateDrawState(fCurrentView);

#if 0
#if DELAYED_BACKGROUND_CLEARING
	if (fCurrentView && fCurrentView->IsBackgroundDirty()
		&& fWindow->InUpdate()) {
		DrawingEngine* drawingEngine = fWindow->GetDrawingEngine();
		if (drawingEngine->LockParallelAccess()) {

			fWindow->GetEffectiveDrawingRegion(fCurrentView, fCurrentDrawingRegion);
			fCurrentDrawingRegionValid = true;
			BRegion dirty(fCurrentDrawingRegion);

			BRegion content;
			fWindow->GetContentRegion(&content);

			fCurrentView->Draw(drawingEngine, &dirty, &content, false);

			drawingEngine->UnlockParallelAccess();
		}
	}
#endif
#endif // 0
}


void
ServerWindow::_UpdateDrawState(View* view)
{
	// switch the drawing state
	// TODO: is it possible to scroll a view while it
	// is being drawn? probably not... otherwise the
	// "offsets" passed below would need to be updated again
	DrawingEngine* drawingEngine = fWindow->GetDrawingEngine();
	if (view && drawingEngine) {
		BPoint p(0, 0);
		view->ConvertToScreenForDrawing(&p);
		drawingEngine->SetDrawState(view->CurrentState(), p.x, p.y);
	}
}


void
ServerWindow::_UpdateCurrentDrawingRegion()
{
	if (!fCurrentDrawingRegionValid
		|| fWindow->DrawingRegionChanged(fCurrentView)) {
		fWindow->GetEffectiveDrawingRegion(fCurrentView,
			fCurrentDrawingRegion);
		fCurrentDrawingRegionValid = true;
	}
}


bool
ServerWindow::_MessageNeedsAllWindowsLocked(uint32 code) const
{
	switch (code) {
		case AS_SET_WINDOW_TITLE:
		case AS_ADD_TO_SUBSET:
		case AS_REMOVE_FROM_SUBSET:
		case AS_VIEW_CREATE_ROOT:
		case AS_VIEW_CREATE:
		case AS_SEND_BEHIND:
		case AS_SET_LOOK:
		case AS_SET_FEEL:
		case AS_SET_FLAGS:
		case AS_SET_WORKSPACES:
		case AS_WINDOW_MOVE:
		case AS_WINDOW_RESIZE:
		case AS_SET_SIZE_LIMITS:
		case AS_SYSTEM_FONT_CHANGED:
		case AS_SET_DECORATOR_SETTINGS:
		case AS_GET_MOUSE:
		case AS_DIRECT_WINDOW_SET_FULLSCREEN:
//		case AS_VIEW_SET_EVENT_MASK:
//		case AS_VIEW_SET_MOUSE_EVENT_MASK:
			return true;
		default:
			return false;
	}
}


void
ServerWindow::_DirectWindowSetFullScreen(bool enable)
{
	if (enable) {
		fDesktop->HWInterface()->SetCursorVisible(false);
		
		fDirectWindowData->old_window_frame = fWindow->Frame();
		BRect screenFrame =
			fDesktop->ActiveScreen()->Frame();
		fDirectWindowFeel = fWindow->Feel();
		fDesktop->MoveWindowBy(fWindow,
			- fWindow->Frame().left,
			- fWindow->Frame().top);
		fDesktop->ResizeWindowBy(fWindow,
			screenFrame.Width() - fWindow->Frame().Width(),
			screenFrame.Height() 
				- fWindow->Frame().Height());
	} else {
		const BRect &oldFrame = fDirectWindowData->old_window_frame;
		fDesktop->MoveWindowBy(fWindow,
			oldFrame.left - fWindow->Frame().left,
			oldFrame.top - fWindow->Frame().top);
		fDesktop->ResizeWindowBy(fWindow,
			oldFrame.Width() - fWindow->Frame().Width(),
			oldFrame.Height() - fWindow->Frame().Height());
			
		fDesktop->HWInterface()->SetCursorVisible(true);			
	}

	fDesktop->SetWindowFeel(fWindow,
		enable ? kWindowScreenFeel : fDirectWindowFeel);
}


status_t
ServerWindow::PictureToRegion(ServerPicture *picture, BRegion &region,
	bool inverse, BPoint where)
{
	fprintf(stderr, "ServerWindow::PictureToRegion() not implemented\n");
	region.MakeEmpty();
	return B_ERROR;
}