/*
 * Copyright 2001-2017 Haiku, Inc. All rights reserved.
 * Distributed under the terms of the MIT License.
 *
 * Authors:
 *		Stephan Aßmus, superstippi@gmx.de
 *		Axel Dörfler, axeld@pinc-software.de
 *		Adrian Oanca, adioanca@cotty.iren.ro
 *		Ingo Weinhold. ingo_weinhold@gmx.de
 *		Julian Harnath, julian.harnath@rwth-aachen.de
 *		Joseph Groover, looncraz@looncraz.net
 */
 
 
#include <View.h>
 
#include <algorithm>
#include <new>
 
#include <math.h>
#include <stdio.h>
 
#include <Application.h>
#include <Bitmap.h>
#include <Button.h>
#include <Cursor.h>
#include <File.h>
#include <GradientLinear.h>
#include <GradientRadial.h>
#include <GradientRadialFocus.h>
#include <GradientDiamond.h>
#include <GradientConic.h>
#include <InterfaceDefs.h>
#include <Layout.h>
#include <LayoutContext.h>
#include <LayoutUtils.h>
#include <MenuBar.h>
#include <Message.h>
#include <MessageQueue.h>
#include <ObjectList.h>
#include <Picture.h>
#include <Point.h>
#include <Polygon.h>
#include <PropertyInfo.h>
#include <Region.h>
#include <ScrollBar.h>
#include <Shape.h>
#include <Shelf.h>
#include <String.h>
#include <Window.h>
 
#include <AppMisc.h>
#include <AppServerLink.h>
#include <binary_compatibility/Interface.h>
#include <binary_compatibility/Support.h>
#include <MessagePrivate.h>
#include <MessageUtils.h>
#include <PortLink.h>
#include <ServerProtocol.h>
#include <ServerProtocolStructs.h>
#include <ShapePrivate.h>
#include <ToolTip.h>
#include <ToolTipManager.h>
#include <TokenSpace.h>
#include <ViewPrivate.h>
 
using std::nothrow;
 
//#define DEBUG_BVIEW
#ifdef DEBUG_BVIEW
#	include <stdio.h>
#	define STRACE(x) printf x
#	define BVTRACE _PrintToStream()
#else
#	define STRACE(x) ;
#	define BVTRACE ;
#endif
 
 
static property_info sViewPropInfo[] = {
	{ "Frame", { B_GET_PROPERTY, B_SET_PROPERTY },
		{ B_DIRECT_SPECIFIER, 0 }, "The view's frame rectangle.", 0,
		{ B_RECT_TYPE }
	},
	{ "Hidden", { B_GET_PROPERTY, B_SET_PROPERTY },
		{ B_DIRECT_SPECIFIER, 0 }, "Whether or not the view is hidden.",
		0, { B_BOOL_TYPE }
	},
	{ "Shelf", { 0 },
		{ B_DIRECT_SPECIFIER, 0 }, "Directs the scripting message to the "
			"shelf.", 0
	},
	{ "View", { B_COUNT_PROPERTIES, 0 },
		{ B_DIRECT_SPECIFIER, 0 }, "Returns the number of child views.", 0,
		{ B_INT32_TYPE }
	},
	{ "View", { 0 },
		{ B_INDEX_SPECIFIER, B_REVERSE_INDEX_SPECIFIER, B_NAME_SPECIFIER, 0 },
		"Directs the scripting message to the specified view.", 0
	},
 
	{ 0 }
};
 
 
//	#pragma mark -
 
 
static inline uint32
get_uint32_color(rgb_color color)
{
	return B_BENDIAN_TO_HOST_INT32(*(uint32*)&color);
		// rgb_color is always in rgba format, no matter what endian;
		// we always return the int32 value in host endian.
}
 
 
static inline rgb_color
get_rgb_color(uint32 value)
{
	value = B_HOST_TO_BENDIAN_INT32(value);
	return *(rgb_color*)&value;
}
 
 
//	#pragma mark -
 
 
namespace BPrivate {
 
ViewState::ViewState()
{
	pen_location.Set(0, 0);
	pen_size = 1.0;
 
	// NOTE: the clipping_region is empty
	// on construction but it is not used yet,
	// we avoid having to keep track of it via
	// this flag
	clipping_region_used = false;
 
	high_color = (rgb_color){ 0, 0, 0, 255 };
	low_color = (rgb_color){ 255, 255, 255, 255 };
	view_color = low_color;
	which_view_color = B_NO_COLOR;
	which_view_color_tint = B_NO_TINT;
 
	which_high_color = B_NO_COLOR;
	which_high_color_tint = B_NO_TINT;
 
	which_low_color = B_NO_COLOR;
	which_low_color_tint = B_NO_TINT;
 
	pattern = B_SOLID_HIGH;
	drawing_mode = B_OP_COPY;
 
	origin.Set(0, 0);
 
	line_join = B_MITER_JOIN;
	line_cap = B_BUTT_CAP;
	miter_limit = B_DEFAULT_MITER_LIMIT;
	fill_rule = B_NONZERO;
 
	alpha_source_mode = B_PIXEL_ALPHA;
	alpha_function_mode = B_ALPHA_OVERLAY;
 
	scale = 1.0;
 
	font = *be_plain_font;
	font_flags = font.Flags();
	font_aliasing = false;
 
	// We only keep the B_VIEW_CLIP_REGION_BIT flag invalidated,
	// because we should get the clipping region from app_server.
	// The other flags do not need to be included because the data they
	// represent is already in sync with app_server - app_server uses the
	// same init (default) values.
	valid_flags = ~B_VIEW_CLIP_REGION_BIT;
 
	archiving_flags = B_VIEW_FRAME_BIT | B_VIEW_RESIZE_BIT;
}
 
 
void
ViewState::UpdateServerFontState(BPrivate::PortLink &link)
{
	link.StartMessage(AS_VIEW_SET_FONT_STATE);
	link.Attach<uint16>(font_flags);
		// always present
 
	if (font_flags & B_FONT_FAMILY_AND_STYLE)
		link.Attach<uint32>(font.FamilyAndStyle());
 
	if (font_flags & B_FONT_SIZE)
		link.Attach<float>(font.Size());
 
	if (font_flags & B_FONT_SHEAR)
		link.Attach<float>(font.Shear());
 
	if (font_flags & B_FONT_ROTATION)
		link.Attach<float>(font.Rotation());
 
	if (font_flags & B_FONT_FALSE_BOLD_WIDTH)
		link.Attach<float>(font.FalseBoldWidth());
 
	if (font_flags & B_FONT_SPACING)
		link.Attach<uint8>(font.Spacing());
 
	if (font_flags & B_FONT_ENCODING)
		link.Attach<uint8>(font.Encoding());
 
	if (font_flags & B_FONT_FACE)
		link.Attach<uint16>(font.Face());
 
	if (font_flags & B_FONT_FLAGS)
		link.Attach<uint32>(font.Flags());
}
 
 
void
ViewState::UpdateServerState(BPrivate::PortLink &link)
{
	UpdateServerFontState(link);
 
	link.StartMessage(AS_VIEW_SET_STATE);
 
	ViewSetStateInfo info;
	info.penLocation = pen_location;
	info.penSize = pen_size;
	info.highColor = high_color;
	info.lowColor = low_color;
	info.whichHighColor = which_high_color;
	info.whichLowColor = which_low_color;
	info.whichHighColorTint = which_high_color_tint;
	info.whichLowColorTint = which_low_color_tint;
	info.pattern = pattern;
	info.drawingMode = drawing_mode;
	info.origin = origin;
	info.scale = scale;
	info.lineJoin = line_join;
	info.lineCap = line_cap;
	info.miterLimit = miter_limit;
	info.fillRule = fill_rule;
	info.alphaSourceMode = alpha_source_mode;
	info.alphaFunctionMode = alpha_function_mode;
	info.fontAntialiasing = font_aliasing;
	link.Attach<ViewSetStateInfo>(info);
 
	// BAffineTransform is transmitted as a double array
	double _transform[6];
	if (transform.Flatten(_transform, sizeof(_transform)) != B_OK)
		return;
	link.Attach<double[6]>(_transform);
 
	// we send the 'local' clipping region... if we have one...
	// TODO: Could be optimized, but is low prio, since most views won't
	// have a custom clipping region.
	if (clipping_region_used) {
		int32 count = clipping_region.CountRects();
		link.Attach<int32>(count);
		for (int32 i = 0; i < count; i++)
			link.Attach<BRect>(clipping_region.RectAt(i));
	} else {
		// no clipping region
		link.Attach<int32>(-1);
	}
 
	// Although we might have a 'local' clipping region, when we call
	// BView::GetClippingRegion() we ask for the 'global' one and it
	// is kept on server, so we must invalidate B_VIEW_CLIP_REGION_BIT flag
 
	valid_flags = ~B_VIEW_CLIP_REGION_BIT;
}
 
 
void
ViewState::UpdateFrom(BPrivate::PortLink &link)
{
	link.StartMessage(AS_VIEW_GET_STATE);
 
	int32 code;
	if (link.FlushWithReply(code) != B_OK
		|| code != B_OK)
		return;
 
	ViewGetStateInfo info;
	link.Read<ViewGetStateInfo>(&info);
 
	// set view's font state
	font_flags = B_FONT_ALL;
	font.SetFamilyAndStyle(info.fontID);
	font.SetSize(info.fontSize);
	font.SetShear(info.fontShear);
	font.SetRotation(info.fontRotation);
	font.SetFalseBoldWidth(info.fontFalseBoldWidth);
	font.SetSpacing(info.fontSpacing);
	font.SetEncoding(info.fontEncoding);
	font.SetFace(info.fontFace);
	font.SetFlags(info.fontFlags);
 
	// set view's state
	pen_location = info.viewStateInfo.penLocation;
	pen_size = info.viewStateInfo.penSize;
	high_color = info.viewStateInfo.highColor;
	low_color = info.viewStateInfo.lowColor;
	pattern = info.viewStateInfo.pattern;
	drawing_mode = info.viewStateInfo.drawingMode;
	origin = info.viewStateInfo.origin;
	scale = info.viewStateInfo.scale;
	line_join = info.viewStateInfo.lineJoin;
	line_cap = info.viewStateInfo.lineCap;
	miter_limit = info.viewStateInfo.miterLimit;
	fill_rule = info.viewStateInfo.fillRule;
	alpha_source_mode = info.viewStateInfo.alphaSourceMode;
	alpha_function_mode = info.viewStateInfo.alphaFunctionMode;
	font_aliasing = info.viewStateInfo.fontAntialiasing;
 
	// BAffineTransform is transmitted as a double array
	double _transform[6];
	link.Read<double[6]>(&_transform);
	if (transform.Unflatten(B_AFFINE_TRANSFORM_TYPE, _transform,
		sizeof(_transform)) != B_OK) {
		return;
	}
 
	// read the user clipping
	// (that's NOT the current View visible clipping but the additional
	// user specified clipping!)
	int32 clippingRectCount;
	link.Read<int32>(&clippingRectCount);
	if (clippingRectCount >= 0) {
		clipping_region.MakeEmpty();
		for (int32 i = 0; i < clippingRectCount; i++) {
			BRect rect;
			link.Read<BRect>(&rect);
			clipping_region.Include(rect);
		}
	} else {
		// no user clipping used
		clipping_region_used = false;
	}
 
	valid_flags = ~B_VIEW_CLIP_REGION_BIT;
}
 
}	// namespace BPrivate
 
 
//	#pragma mark -
 
 
// archiving constants
namespace {
	const char* const kSizesField = "BView:sizes";
		// kSizesField = {min, max, pref}
	const char* const kAlignmentField = "BView:alignment";
	const char* const kLayoutField = "BView:layout";
}
 
 
struct BView::LayoutData {
	LayoutData()
		:
		fMinSize(),
		fMaxSize(),
		fPreferredSize(),
		fAlignment(),
		fLayoutInvalidationDisabled(0),
		fLayout(NULL),
		fLayoutContext(NULL),
		fLayoutItems(5, false),
		fLayoutValid(true),		// TODO: Rethink these initial values!
		fMinMaxValid(true),		//
		fLayoutInProgress(false),
		fNeedsRelayout(true)
	{
	}
 
	status_t
	AddDataToArchive(BMessage* archive)
	{
		status_t err = archive->AddSize(kSizesField, fMinSize);
 
		if (err == B_OK)
			err = archive->AddSize(kSizesField, fMaxSize);
 
		if (err == B_OK)
			err = archive->AddSize(kSizesField, fPreferredSize);
 
		if (err == B_OK)
			err = archive->AddAlignment(kAlignmentField, fAlignment);
 
		return err;
	}
 
	void
	PopulateFromArchive(BMessage* archive)
	{
		archive->FindSize(kSizesField, 0, &fMinSize);
		archive->FindSize(kSizesField, 1, &fMaxSize);
		archive->FindSize(kSizesField, 2, &fPreferredSize);
		archive->FindAlignment(kAlignmentField, &fAlignment);
	}
 
	BSize			fMinSize;
	BSize			fMaxSize;
	BSize			fPreferredSize;
	BAlignment		fAlignment;
	int				fLayoutInvalidationDisabled;
	BLayout*		fLayout;
	BLayoutContext*	fLayoutContext;
	BObjectList<BLayoutItem> fLayoutItems;
	bool			fLayoutValid;
	bool			fMinMaxValid;
	bool			fLayoutInProgress;
	bool			fNeedsRelayout;
};
 
 
BView::BView(const char* name, uint32 flags, BLayout* layout)
	:
	BHandler(name)
{
	_InitData(BRect(0, 0, -1, -1), name, B_FOLLOW_NONE,
		flags | B_SUPPORTS_LAYOUT);
	SetLayout(layout);
}
 
 
BView::BView(BRect frame, const char* name, uint32 resizingMode, uint32 flags)
	:
	BHandler(name)
{
	_InitData(frame, name, resizingMode, flags);
}
 
 
BView::BView(BMessage* archive)
	:
	BHandler(BUnarchiver::PrepareArchive(archive))
{
	BUnarchiver unarchiver(archive);
	if (!archive)
		debugger("BView cannot be constructed from a NULL archive.");
 
	BRect frame;
	archive->FindRect("_frame", &frame);
 
	uint32 resizingMode;
	if (archive->FindInt32("_resize_mode", (int32*)&resizingMode) != B_OK)
		resizingMode = 0;
 
	uint32 flags;
	if (archive->FindInt32("_flags", (int32*)&flags) != B_OK)
		flags = 0;
 
	_InitData(frame, Name(), resizingMode, flags);
 
	font_family family;
	font_style style;
	if (archive->FindString("_fname", 0, (const char**)&family) == B_OK
		&& archive->FindString("_fname", 1, (const char**)&style) == B_OK) {
		BFont font;
		font.SetFamilyAndStyle(family, style);
 
		float size;
		if (archive->FindFloat("_fflt", 0, &size) == B_OK)
			font.SetSize(size);
 
		float shear;
		if (archive->FindFloat("_fflt", 1, &shear) == B_OK
			&& shear >= 45.0 && shear <= 135.0)
			font.SetShear(shear);
 
		float rotation;
		if (archive->FindFloat("_fflt", 2, &rotation) == B_OK
			&& rotation >=0 && rotation <= 360)
			font.SetRotation(rotation);
 
		SetFont(&font, B_FONT_FAMILY_AND_STYLE | B_FONT_SIZE
			| B_FONT_SHEAR | B_FONT_ROTATION);
	}
 
	int32 color = 0;
	if (archive->FindInt32("_color", 0, &color) == B_OK)
		SetHighColor(get_rgb_color(color));
	if (archive->FindInt32("_color", 1, &color) == B_OK)
		SetLowColor(get_rgb_color(color));
	if (archive->FindInt32("_color", 2, &color) == B_OK)
		SetViewColor(get_rgb_color(color));
 
	float tint = B_NO_TINT;
	if (archive->FindInt32("_uicolor", 0, &color) == B_OK
		&& color != B_NO_COLOR) {
		if (archive->FindFloat("_uitint", 0, &tint) != B_OK)
			tint = B_NO_TINT;
 
		SetHighUIColor((color_which)color, tint);
	}
	if (archive->FindInt32("_uicolor", 1, &color) == B_OK
		&& color != B_NO_COLOR) {
		if (archive->FindFloat("_uitint", 1, &tint) != B_OK)
			tint = B_NO_TINT;
 
		SetLowUIColor((color_which)color, tint);
	}
	if (archive->FindInt32("_uicolor", 2, &color) == B_OK
		&& color != B_NO_COLOR) {
		if (archive->FindFloat("_uitint", 2, &tint) != B_OK)
			tint = B_NO_TINT;
 
		SetViewUIColor((color_which)color, tint);
	}
 
	uint32 evMask;
	uint32 options;
	if (archive->FindInt32("_evmask", 0, (int32*)&evMask) == B_OK
		&& archive->FindInt32("_evmask", 1, (int32*)&options) == B_OK)
		SetEventMask(evMask, options);
 
	BPoint origin;
	if (archive->FindPoint("_origin", &origin) == B_OK)
		SetOrigin(origin);
 
	float scale;
	if (archive->FindFloat("_scale", &scale) == B_OK)
		SetScale(scale);
 
	BAffineTransform transform;
	if (archive->FindFlat("_transform", &transform) == B_OK)
		SetTransform(transform);
 
	float penSize;
	if (archive->FindFloat("_psize", &penSize) == B_OK)
		SetPenSize(penSize);
 
	BPoint penLocation;
	if (archive->FindPoint("_ploc", &penLocation) == B_OK)
		MovePenTo(penLocation);
 
	int16 lineCap;
	int16 lineJoin;
	float lineMiter;
	if (archive->FindInt16("_lmcapjoin", 0, &lineCap) == B_OK
		&& archive->FindInt16("_lmcapjoin", 1, &lineJoin) == B_OK
		&& archive->FindFloat("_lmmiter", &lineMiter) == B_OK)
		SetLineMode((cap_mode)lineCap, (join_mode)lineJoin, lineMiter);
 
	int16 fillRule;
	if (archive->FindInt16("_fillrule", &fillRule) == B_OK)
		SetFillRule(fillRule);
 
	int16 alphaBlend;
	int16 modeBlend;
	if (archive->FindInt16("_blend", 0, &alphaBlend) == B_OK
		&& archive->FindInt16("_blend", 1, &modeBlend) == B_OK)
		SetBlendingMode( (source_alpha)alphaBlend, (alpha_function)modeBlend);
 
	uint32 drawingMode;
	if (archive->FindInt32("_dmod", (int32*)&drawingMode) == B_OK)
		SetDrawingMode((drawing_mode)drawingMode);
 
	fLayoutData->PopulateFromArchive(archive);
 
	if (archive->FindInt16("_show", &fShowLevel) != B_OK)
		fShowLevel = 0;
 
	if (BUnarchiver::IsArchiveManaged(archive)) {
		int32 i = 0;
		while (unarchiver.EnsureUnarchived("_views", i++) == B_OK)
				;
		unarchiver.EnsureUnarchived(kLayoutField);
 
	} else {
		BMessage msg;
		for (int32 i = 0; archive->FindMessage("_views", i, &msg) == B_OK;
			i++) {
			BArchivable* object = instantiate_object(&msg);
			if (BView* child = dynamic_cast<BView*>(object))
				AddChild(child);
		}
	}
}
 
 
BArchivable*
BView::Instantiate(BMessage* data)
{
	if (!validate_instantiation(data , "BView"))
		return NULL;
 
	return new(std::nothrow) BView(data);
}
 
 
status_t
BView::Archive(BMessage* data, bool deep) const
{
	BArchiver archiver(data);
	status_t ret = BHandler::Archive(data, deep);
 
	if (ret != B_OK)
		return ret;
 
	if ((fState->archiving_flags & B_VIEW_FRAME_BIT) != 0)
		ret = data->AddRect("_frame", Bounds().OffsetToCopy(fParentOffset));
 
	if (ret == B_OK)
		ret = data->AddInt32("_resize_mode", ResizingMode());
 
	if (ret == B_OK)
		ret = data->AddInt32("_flags", Flags());
 
	if (ret == B_OK && (fState->archiving_flags & B_VIEW_EVENT_MASK_BIT) != 0) {
		ret = data->AddInt32("_evmask", fEventMask);
		if (ret == B_OK)
			ret = data->AddInt32("_evmask", fEventOptions);
	}
 
	if (ret == B_OK && (fState->archiving_flags & B_VIEW_FONT_BIT) != 0) {
		BFont font;
		GetFont(&font);
 
		font_family family;
		font_style style;
		font.GetFamilyAndStyle(&family, &style);
		ret = data->AddString("_fname", family);
		if (ret == B_OK)
			ret = data->AddString("_fname", style);
		if (ret == B_OK)
			ret = data->AddFloat("_fflt", font.Size());
		if (ret == B_OK)
			ret = data->AddFloat("_fflt", font.Shear());
		if (ret == B_OK)
			ret = data->AddFloat("_fflt", font.Rotation());
	}
 
	// colors
	if (ret == B_OK)
		ret = data->AddInt32("_color", get_uint32_color(HighColor()));
	if (ret == B_OK)
		ret = data->AddInt32("_color", get_uint32_color(LowColor()));
	if (ret == B_OK)
		ret = data->AddInt32("_color", get_uint32_color(ViewColor()));
 
	if (ret == B_OK)
		ret = data->AddInt32("_uicolor", (int32)HighUIColor());
	if (ret == B_OK)
		ret = data->AddInt32("_uicolor", (int32)LowUIColor());
	if (ret == B_OK)
		ret = data->AddInt32("_uicolor", (int32)ViewUIColor());
 
	if (ret == B_OK)
		ret = data->AddFloat("_uitint", fState->which_high_color_tint);
	if (ret == B_OK)
		ret = data->AddFloat("_uitint", fState->which_low_color_tint);
	if (ret == B_OK)
		ret = data->AddFloat("_uitint", fState->which_view_color_tint);
 
//	NOTE: we do not use this flag any more
//	if ( 1 ){
//		ret = data->AddInt32("_dbuf", 1);
//	}
 
	if (ret == B_OK && (fState->archiving_flags & B_VIEW_ORIGIN_BIT) != 0)
		ret = data->AddPoint("_origin", Origin());
 
	if (ret == B_OK && (fState->archiving_flags & B_VIEW_SCALE_BIT) != 0)
		ret = data->AddFloat("_scale", Scale());
 
	if (ret == B_OK && (fState->archiving_flags & B_VIEW_TRANSFORM_BIT) != 0) {
		BAffineTransform transform = Transform();
		ret = data->AddFlat("_transform", &transform);
	}
 
	if (ret == B_OK && (fState->archiving_flags & B_VIEW_PEN_SIZE_BIT) != 0)
		ret = data->AddFloat("_psize", PenSize());
 
	if (ret == B_OK && (fState->archiving_flags & B_VIEW_PEN_LOCATION_BIT) != 0)
		ret = data->AddPoint("_ploc", PenLocation());
 
	if (ret == B_OK && (fState->archiving_flags & B_VIEW_LINE_MODES_BIT) != 0) {
		ret = data->AddInt16("_lmcapjoin", (int16)LineCapMode());
		if (ret == B_OK)
			ret = data->AddInt16("_lmcapjoin", (int16)LineJoinMode());
		if (ret == B_OK)
			ret = data->AddFloat("_lmmiter", LineMiterLimit());
	}
 
	if (ret == B_OK && (fState->archiving_flags & B_VIEW_FILL_RULE_BIT) != 0)
		ret = data->AddInt16("_fillrule", (int16)FillRule());
 
	if (ret == B_OK && (fState->archiving_flags & B_VIEW_BLENDING_BIT) != 0) {
		source_alpha alphaSourceMode;
		alpha_function alphaFunctionMode;
		GetBlendingMode(&alphaSourceMode, &alphaFunctionMode);
 
		ret = data->AddInt16("_blend", (int16)alphaSourceMode);
		if (ret == B_OK)
			ret = data->AddInt16("_blend", (int16)alphaFunctionMode);
	}
 
	if (ret == B_OK && (fState->archiving_flags & B_VIEW_DRAWING_MODE_BIT) != 0)
		ret = data->AddInt32("_dmod", DrawingMode());
 
	if (ret == B_OK)
		ret = fLayoutData->AddDataToArchive(data);
 
	if (ret == B_OK)
		ret = data->AddInt16("_show", fShowLevel);
 
	if (deep && ret == B_OK) {
		for (BView* child = fFirstChild; child != NULL && ret == B_OK;
			child = child->fNextSibling)
			ret = archiver.AddArchivable("_views", child, deep);
 
		if (ret == B_OK)
			ret = archiver.AddArchivable(kLayoutField, GetLayout(), deep);
	}
 
	return archiver.Finish(ret);
}
 
 
status_t
BView::AllUnarchived(const BMessage* from)
{
	BUnarchiver unarchiver(from);
	status_t err = B_OK;
 
	int32 count;
	from->GetInfo("_views", NULL, &count);
 
	for (int32 i = 0; err == B_OK && i < count; i++) {
		BView* child;
		err = unarchiver.FindObject<BView>("_views", i, child);
		if (err == B_OK)
			err = _AddChild(child, NULL) ? B_OK : B_ERROR;
	}
 
	if (err == B_OK) {
		BLayout*& layout = fLayoutData->fLayout;
		err = unarchiver.FindObject(kLayoutField, layout);
		if (err == B_OK && layout) {
			fFlags |= B_SUPPORTS_LAYOUT;
			fLayoutData->fLayout->SetOwner(this);
		}
	}
 
	return err;
}
 
 
status_t
BView::AllArchived(BMessage* into) const
{
	return BHandler::AllArchived(into);
}
 
 
BView::~BView()
{
	STRACE(("BView(%s)::~BView()\n", this->Name()));
 
	if (fOwner != NULL) {
		debugger("Trying to delete a view that belongs to a window. "
			"Call RemoveSelf first.");
	}
 
	// we also delete all our children
 
	BView* child = fFirstChild;
	while (child) {
		BView* nextChild = child->fNextSibling;
 
		delete child;
		child = nextChild;
	}
 
	SetLayout(NULL);
	_RemoveLayoutItemsFromLayout(true);
 
	delete fLayoutData;
 
	_RemoveSelf();
 
	if (fToolTip != NULL)
		fToolTip->ReleaseReference();
 
	if (fVerScroller != NULL)
		fVerScroller->SetTarget((BView*)NULL);
	if (fHorScroller != NULL)
		fHorScroller->SetTarget((BView*)NULL);
 
	SetName(NULL);
 
	_RemoveCommArray();
	delete fState;
}
 
 
BRect
BView::Bounds() const
{
	_CheckLock();
 
	if (fIsPrinting)
		return fState->print_rect;
 
	return fBounds;
}
 
 
void
BView::_ConvertToParent(BPoint* point, bool checkLock) const
{
	if (!fParent)
		return;
 
	if (checkLock)
		_CheckLock();
 
	// - our scrolling offset
	// + our bounds location within the parent
	point->x += -fBounds.left + fParentOffset.x;
	point->y += -fBounds.top + fParentOffset.y;
}
 
 
void
BView::ConvertToParent(BPoint* point) const
{
	_ConvertToParent(point, true);
}
 
 
BPoint
BView::ConvertToParent(BPoint point) const
{
	ConvertToParent(&point);
 
	return point;
}
 
 
void
BView::_ConvertFromParent(BPoint* point, bool checkLock) const
{
	if (!fParent)
		return;
 
	if (checkLock)
		_CheckLock();
 
	// - our bounds location within the parent
	// + our scrolling offset
	point->x += -fParentOffset.x + fBounds.left;
	point->y += -fParentOffset.y + fBounds.top;
}
 
 
void
BView::ConvertFromParent(BPoint* point) const
{
	_ConvertFromParent(point, true);
}
 
 
BPoint
BView::ConvertFromParent(BPoint point) const
{
	ConvertFromParent(&point);
 
	return point;
}
 
 
void
BView::ConvertToParent(BRect* rect) const
{
	if (!fParent)
		return;
 
	_CheckLock();
 
	// - our scrolling offset
	// + our bounds location within the parent
	rect->OffsetBy(-fBounds.left + fParentOffset.x,
		-fBounds.top + fParentOffset.y);
}
 
 
BRect
BView::ConvertToParent(BRect rect) const
{
	ConvertToParent(&rect);
 
	return rect;
}
 
 
void
BView::ConvertFromParent(BRect* rect) const
{
	if (!fParent)
		return;
 
	_CheckLock();
 
	// - our bounds location within the parent
	// + our scrolling offset
	rect->OffsetBy(-fParentOffset.x + fBounds.left,
		-fParentOffset.y + fBounds.top);
}
 
 
BRect
BView::ConvertFromParent(BRect rect) const
{
	ConvertFromParent(&rect);
 
	return rect;
}
 
 
void
BView::_ConvertToScreen(BPoint* point, bool checkLock) const
{
	if (!fParent) {
		if (fOwner)
			fOwner->ConvertToScreen(point);
 
		return;
	}
 
	if (checkLock)
		_CheckOwnerLock();
 
	_ConvertToParent(point, false);
	fParent->_ConvertToScreen(point, false);
}
 
 
void
BView::ConvertToScreen(BPoint* point) const
{
	_ConvertToScreen(point, true);
}
 
 
BPoint
BView::ConvertToScreen(BPoint point) const
{
	ConvertToScreen(&point);
 
	return point;
}
 
 
void
BView::_ConvertFromScreen(BPoint* point, bool checkLock) const
{
	if (!fParent) {
		if (fOwner)
			fOwner->ConvertFromScreen(point);
 
		return;
	}
 
	if (checkLock)
		_CheckOwnerLock();
 
	_ConvertFromParent(point, false);
	fParent->_ConvertFromScreen(point, false);
}
 
 
void
BView::ConvertFromScreen(BPoint* point) const
{
	_ConvertFromScreen(point, true);
}
 
 
BPoint
BView::ConvertFromScreen(BPoint point) const
{
	ConvertFromScreen(&point);
 
	return point;
}
 
 
void
BView::ConvertToScreen(BRect* rect) const
{
	BPoint offset(0.0, 0.0);
	ConvertToScreen(&offset);
	rect->OffsetBy(offset);
}
 
 
BRect
BView::ConvertToScreen(BRect rect) const
{
	ConvertToScreen(&rect);
 
	return rect;
}
 
 
void
BView::ConvertFromScreen(BRect* rect) const
{
	BPoint offset(0.0, 0.0);
	ConvertFromScreen(&offset);
	rect->OffsetBy(offset);
}
 
 
BRect
BView::ConvertFromScreen(BRect rect) const
{
	ConvertFromScreen(&rect);
 
	return rect;
}
 
 
uint32
BView::Flags() const
{
	_CheckLock();
	return fFlags & ~_RESIZE_MASK_;
}
 
 
void
BView::SetFlags(uint32 flags)
{
	if (Flags() == flags)
		return;
 
	if (fOwner) {
		if (flags & B_PULSE_NEEDED) {
			_CheckLock();
			if (fOwner->fPulseRunner == NULL)
				fOwner->SetPulseRate(fOwner->PulseRate());
		}
 
		uint32 changesFlags = flags ^ fFlags;
		if (changesFlags & (B_WILL_DRAW | B_FULL_UPDATE_ON_RESIZE
				| B_FRAME_EVENTS | B_SUBPIXEL_PRECISE)) {
			_CheckLockAndSwitchCurrent();
 
			fOwner->fLink->StartMessage(AS_VIEW_SET_FLAGS);
			fOwner->fLink->Attach<uint32>(flags);
			fOwner->fLink->Flush();
		}
	}
 
	/* Some useful info:
		fFlags is a unsigned long (32 bits)
		* bits 1-16 are used for BView's flags
		* bits 17-32 are used for BView' resize mask
		* _RESIZE_MASK_ is used for that. Look into View.h to see how
			it's defined
	*/
	fFlags = (flags & ~_RESIZE_MASK_) | (fFlags & _RESIZE_MASK_);
 
	fState->archiving_flags |= B_VIEW_FLAGS_BIT;
}
 
 
BRect
BView::Frame() const
{
	return Bounds().OffsetToCopy(fParentOffset.x, fParentOffset.y);
}
 
 
void
BView::Hide()
{
	if (fOwner && fShowLevel == 0) {
		_CheckLockAndSwitchCurrent();
		fOwner->fLink->StartMessage(AS_VIEW_HIDE);
		fOwner->fLink->Flush();
	}
	fShowLevel++;
 
	if (fShowLevel == 1)
		_InvalidateParentLayout();
}
 
 
void
BView::Show()
{
	fShowLevel--;
	if (fOwner && fShowLevel == 0) {
		_CheckLockAndSwitchCurrent();
		fOwner->fLink->StartMessage(AS_VIEW_SHOW);
		fOwner->fLink->Flush();
	}
 
	if (fShowLevel == 0)
		_InvalidateParentLayout();
}
 
 
bool
BView::IsFocus() const
{
	if (fOwner) {
		_CheckLock();
		return fOwner->CurrentFocus() == this;
	} else
		return false;
}
 
 
bool
BView::IsHidden(const BView* lookingFrom) const
{
	if (fShowLevel > 0)
		return true;
 
	// may we be egocentric?
	if (lookingFrom == this)
		return false;
 
	// we have the same visibility state as our
	// parent, if there is one
	if (fParent)
		return fParent->IsHidden(lookingFrom);
 
	// if we're the top view, and we're interested
	// in the "global" view, we're inheriting the
	// state of the window's visibility
	if (fOwner && lookingFrom == NULL)
		return fOwner->IsHidden();
 
	return false;
}
 
 
bool
BView::IsHidden() const
{
	return IsHidden(NULL);
}
 
 
bool
BView::IsPrinting() const
{
	return fIsPrinting;
}
 
 
BPoint
BView::LeftTop() const
{
	return Bounds().LeftTop();
}
 
 
void
BView::SetResizingMode(uint32 mode)
{
	if (fOwner) {
		_CheckLockAndSwitchCurrent();
 
		fOwner->fLink->StartMessage(AS_VIEW_RESIZE_MODE);
		fOwner->fLink->Attach<uint32>(mode);
	}
 
	// look at SetFlags() for more info on the below line
	fFlags = (fFlags & ~_RESIZE_MASK_) | (mode & _RESIZE_MASK_);
}
 
 
uint32
BView::ResizingMode() const
{
	return fFlags & _RESIZE_MASK_;
}
 
 
void
BView::SetViewCursor(const BCursor* cursor, bool sync)
{
	if (cursor == NULL || fOwner == NULL)
		return;
 
	_CheckLock();
 
	ViewSetViewCursorInfo info;
	info.cursorToken = cursor->fServerToken;
	info.viewToken = _get_object_token_(this);
	info.sync = sync;
 
	BPrivate::AppServerLink link;
	link.StartMessage(AS_SET_VIEW_CURSOR);
	link.Attach<ViewSetViewCursorInfo>(info);
 
	if (sync) {
		// Make sure the server has processed the message.
		int32 code;
		link.FlushWithReply(code);
	}
}
 
 
void
BView::Flush() const
{
	if (fOwner)
		fOwner->Flush();
}
 
 
void
BView::Sync() const
{
	_CheckOwnerLock();
	if (fOwner)
		fOwner->Sync();
}
 
 
BWindow*
BView::Window() const
{
	return fOwner;
}
 
 
//	#pragma mark - Hook Functions
 
 
void
BView::AttachedToWindow()
{
	// Hook function
	STRACE(("\tHOOK: BView(%s)::AttachedToWindow()\n", Name()));
}
 
 
void
BView::AllAttached()
{
	// Hook function
	STRACE(("\tHOOK: BView(%s)::AllAttached()\n", Name()));
}
 
 
void
BView::DetachedFromWindow()
{
	// Hook function
	STRACE(("\tHOOK: BView(%s)::DetachedFromWindow()\n", Name()));
}
 
 
void
BView::AllDetached()
{
	// Hook function
	STRACE(("\tHOOK: BView(%s)::AllDetached()\n", Name()));
}
 
 
void
BView::Draw(BRect updateRect)
{
	// Hook function
	STRACE(("\tHOOK: BView(%s)::Draw()\n", Name()));
}
 
 
void
BView::DrawAfterChildren(BRect updateRect)
{
	// Hook function
	STRACE(("\tHOOK: BView(%s)::DrawAfterChildren()\n", Name()));
}
 
 
void
BView::FrameMoved(BPoint newPosition)
{
	// Hook function
	STRACE(("\tHOOK: BView(%s)::FrameMoved()\n", Name()));
}
 
 
void
BView::FrameResized(float newWidth, float newHeight)
{
	// Hook function
	STRACE(("\tHOOK: BView(%s)::FrameResized()\n", Name()));
}
 
 
void
BView::GetPreferredSize(float* _width, float* _height)
{
	STRACE(("\tHOOK: BView(%s)::GetPreferredSize()\n", Name()));
 
	if (_width != NULL)
		*_width = fBounds.Width();
	if (_height != NULL)
		*_height = fBounds.Height();
}
 
 
void
BView::ResizeToPreferred()
{
	STRACE(("\tHOOK: BView(%s)::ResizeToPreferred()\n", Name()));
 
	float width;
	float height;
	GetPreferredSize(&width, &height);
 
	ResizeTo(width, height);
}
 
 
void
BView::KeyDown(const char* bytes, int32 numBytes)
{
	// Hook function
	STRACE(("\tHOOK: BView(%s)::KeyDown()\n", Name()));
 
	if (Window())
		Window()->_KeyboardNavigation();
}
 
 
void
BView::KeyUp(const char* bytes, int32 numBytes)
{
	// Hook function
	STRACE(("\tHOOK: BView(%s)::KeyUp()\n", Name()));
}
 
 
void
BView::MouseDown(BPoint where)
{
	// Hook function
	STRACE(("\tHOOK: BView(%s)::MouseDown()\n", Name()));
}
 
 
void
BView::MouseUp(BPoint where)
{
	// Hook function
	STRACE(("\tHOOK: BView(%s)::MouseUp()\n", Name()));
}
 
 
void
BView::MouseMoved(BPoint where, uint32 code, const BMessage* dragMessage)
{
	// Hook function
	STRACE(("\tHOOK: BView(%s)::MouseMoved()\n", Name()));
}
 
 
void
BView::Pulse()
{
	// Hook function
	STRACE(("\tHOOK: BView(%s)::Pulse()\n", Name()));
}
 
 
void
BView::TargetedByScrollView(BScrollView* scroll_view)
{
	// Hook function
	STRACE(("\tHOOK: BView(%s)::TargetedByScrollView()\n", Name()));
}
 
 
void
BView::WindowActivated(bool active)
{
	// Hook function
	STRACE(("\tHOOK: BView(%s)::WindowActivated()\n", Name()));
}
 
 
//	#pragma mark - Input Functions
 
 
void
BView::BeginRectTracking(BRect startRect, uint32 style)
{
	if (_CheckOwnerLockAndSwitchCurrent()) {
		fOwner->fLink->StartMessage(AS_VIEW_BEGIN_RECT_TRACK);
		fOwner->fLink->Attach<BRect>(startRect);
		fOwner->fLink->Attach<uint32>(style);
		fOwner->fLink->Flush();
	}
}
 
 
void
BView::EndRectTracking()
{
	if (_CheckOwnerLockAndSwitchCurrent()) {
		fOwner->fLink->StartMessage(AS_VIEW_END_RECT_TRACK);
		fOwner->fLink->Flush();
	}
}
 
 
void
BView::DragMessage(BMessage* message, BRect dragRect, BHandler* replyTo)
{
	if (!message)
		return;
 
	_CheckOwnerLock();
 
	// calculate the offset
	BPoint offset;
	uint32 buttons;
	BMessage* current = fOwner->CurrentMessage();
	if (!current || current->FindPoint("be:view_where", &offset) != B_OK)
		GetMouse(&offset, &buttons, false);
	offset -= dragRect.LeftTop();
 
	if (!dragRect.IsValid()) {
		DragMessage(message, NULL, B_OP_BLEND, offset, replyTo);
		return;
	}
 
	// TODO: that's not really what should happen - the app_server should take
	// the chance *NOT* to need to drag a whole bitmap around but just a frame.
 
	// create a drag bitmap for the rect
	BBitmap* bitmap = new(std::nothrow) BBitmap(dragRect, B_RGBA32);
	if (bitmap == NULL)
		return;
 
	uint32* bits = (uint32*)bitmap->Bits();
	uint32 bytesPerRow = bitmap->BytesPerRow();
	uint32 width = dragRect.IntegerWidth() + 1;
	uint32 height = dragRect.IntegerHeight() + 1;
	uint32 lastRow = (height - 1) * width;
 
	memset(bits, 0x00, height * bytesPerRow);
 
	// top
	for (uint32 i = 0; i < width; i += 2)
		bits[i] = 0xff000000;
 
	// bottom
	for (uint32 i = (height % 2 == 0 ? 1 : 0); i < width; i += 2)
		bits[lastRow + i] = 0xff000000;
 
	// left
	for (uint32 i = 0; i < lastRow; i += width * 2)
		bits[i] = 0xff000000;
 
	// right
	for (uint32 i = (width % 2 == 0 ? width : 0); i < lastRow; i += width * 2)
		bits[width - 1 + i] = 0xff000000;
 
	DragMessage(message, bitmap, B_OP_BLEND, offset, replyTo);
}
 
 
void
BView::DragMessage(BMessage* message, BBitmap* image, BPoint offset,
	BHandler* replyTo)
{
	DragMessage(message, image, B_OP_COPY, offset, replyTo);
}
 
 
void
BView::DragMessage(BMessage* message, BBitmap* image,
	drawing_mode dragMode, BPoint offset, BHandler* replyTo)
{
	if (message == NULL)
		return;
 
	if (image == NULL) {
		// TODO: workaround for drags without a bitmap - should not be necessary if
		//	we move the rectangle dragging into the app_server
		image = new(std::nothrow) BBitmap(BRect(0, 0, 0, 0), B_RGBA32);
		if (image == NULL)
			return;
	}
 
	if (replyTo == NULL)
		replyTo = this;
 
	if (replyTo->Looper() == NULL)
		debugger("DragMessage: warning - the Handler needs a looper");
 
	_CheckOwnerLock();
 
	if (!message->HasInt32("buttons")) {
		BMessage* msg = fOwner->CurrentMessage();
		uint32 buttons;
 
		if (msg == NULL
			|| msg->FindInt32("buttons", (int32*)&buttons) != B_OK) {
			BPoint point;
			GetMouse(&point, &buttons, false);
		}
 
		message->AddInt32("buttons", buttons);
	}
 
	BMessage::Private privateMessage(message);
	privateMessage.SetReply(BMessenger(replyTo, replyTo->Looper()));
 
	int32 bufferSize = message->FlattenedSize();
	char* buffer = new(std::nothrow) char[bufferSize];
	if (buffer != NULL) {
		message->Flatten(buffer, bufferSize);
 
		fOwner->fLink->StartMessage(AS_VIEW_DRAG_IMAGE);
		fOwner->fLink->Attach<int32>(image->_ServerToken());
		fOwner->fLink->Attach<int32>((int32)dragMode);
		fOwner->fLink->Attach<BPoint>(offset);
		fOwner->fLink->Attach<int32>(bufferSize);
		fOwner->fLink->Attach(buffer, bufferSize);
 
		// we need to wait for the server
		// to actually process this message
		// before we can delete the bitmap
		int32 code;
		fOwner->fLink->FlushWithReply(code);
 
		delete [] buffer;
	} else {
		fprintf(stderr, "BView::DragMessage() - no memory to flatten drag "
			"message\n");
	}
 
	delete image;
}
 
 
void
BView::GetMouse(BPoint* _location, uint32* _buttons, bool checkMessageQueue)
{
	if (_location == NULL && _buttons == NULL)
		return;
 
	_CheckOwnerLockAndSwitchCurrent();
 
	uint32 eventOptions = fEventOptions | fMouseEventOptions;
	bool noHistory = eventOptions & B_NO_POINTER_HISTORY;
	bool fullHistory = eventOptions & B_FULL_POINTER_HISTORY;
 
	if (checkMessageQueue && !noHistory) {
		Window()->UpdateIfNeeded();
		BMessageQueue* queue = Window()->MessageQueue();
		queue->Lock();
 
		// Look out for mouse update messages
 
		BMessage* message;
		for (int32 i = 0; (message = queue->FindMessage(i)) != NULL; i++) {
			switch (message->what) {
				case B_MOUSE_MOVED:
				case B_MOUSE_UP:
				case B_MOUSE_DOWN:
					bool deleteMessage;
					if (!Window()->_StealMouseMessage(message, deleteMessage))
						continue;
 
					if (!fullHistory && message->what == B_MOUSE_MOVED) {
						// Check if the message is too old. Some applications
						// check the message queue in such a way that mouse
						// messages *must* pile up. This check makes them work
						// as intended, although these applications could simply
						// use the version of BView::GetMouse() that does not
						// check the history. Also note that it isn't a problem
						// to delete the message in case there is not a newer
						// one. If we don't find a message in the queue, we will
						// just fall back to asking the app_sever directly. So
						// the imposed delay will not be a problem on slower
						// computers. This check also prevents another problem,
						// when the message that we use is *not* removed from
						// the queue. Subsequent calls to GetMouse() would find
						// this message over and over!
						bigtime_t eventTime;
						if (message->FindInt64("when", &eventTime) == B_OK
							&& system_time() - eventTime > 10000) {
							// just discard the message
							if (deleteMessage)
								delete message;
							continue;
						}
					}
					if (_location != NULL)
						message->FindPoint("screen_where", _location);
					if (_buttons != NULL)
						message->FindInt32("buttons", (int32*)_buttons);
					queue->Unlock();
						// we need to hold the queue lock until here, because
						// the message might still be used for something else
 
					if (_location != NULL)
						ConvertFromScreen(_location);
 
					if (deleteMessage)
						delete message;
 
					return;
			}
		}
		queue->Unlock();
	}
 
	// If no mouse update message has been found in the message queue,
	// we get the current mouse location and buttons from the app_server
 
	fOwner->fLink->StartMessage(AS_GET_MOUSE);
 
	int32 code;
	if (fOwner->fLink->FlushWithReply(code) == B_OK
		&& code == B_OK) {
		BPoint location;
		uint32 buttons;
		fOwner->fLink->Read<BPoint>(&location);
		fOwner->fLink->Read<uint32>(&buttons);
			// TODO: ServerWindow replies with an int32 here
 
		ConvertFromScreen(&location);
			// TODO: in beos R5, location is already converted to the view
			// local coordinate system, so if an app checks the window message
			// queue by itself, it might not find what it expects.
			// NOTE: the fact that we have mouse coords in screen space in our
			// queue avoids the problem that messages already in the queue will
			// be outdated as soon as a window or even the view moves. The
			// second situation being quite common actually, also with regards
			// to scrolling. An app reading these messages would have to know
			// the locations of the window and view for each message...
			// otherwise it is potentially broken anyways.
		if (_location != NULL)
			*_location = location;
		if (_buttons != NULL)
			*_buttons = buttons;
	} else {
		if (_location != NULL)
			_location->Set(0, 0);
		if (_buttons != NULL)
			*_buttons = 0;
	}
}
 
 
void
BView::MakeFocus(bool focus)
{
	if (fOwner == NULL)
		return;
 
	// TODO: If this view has focus and focus == false,
	// will there really be no other view with focus? No
	// cycling to the next one?
	BView* focusView = fOwner->CurrentFocus();
	if (focus) {
		// Unfocus a previous focus view
		if (focusView != NULL && focusView != this)
			focusView->MakeFocus(false);
 
		// if we want to make this view the current focus view
		fOwner->_SetFocus(this, true);
	} else {
		// we want to unfocus this view, but only if it actually has focus
		if (focusView == this)
			fOwner->_SetFocus(NULL, true);
	}
}
 
 
BScrollBar*
BView::ScrollBar(orientation direction) const
{
	switch (direction) {
		case B_VERTICAL:
			return fVerScroller;
 
		case B_HORIZONTAL:
			return fHorScroller;
 
		default:
			return NULL;
	}
}
 
 
void
BView::ScrollBy(float deltaX, float deltaY)
{
	ScrollTo(BPoint(fBounds.left + deltaX, fBounds.top + deltaY));
}
 
 
void
BView::ScrollTo(BPoint where)
{
	// scrolling by fractional values is not supported
	where.x = roundf(where.x);
	where.y = roundf(where.y);
 
	// no reason to process this further if no scroll is intended.
	if (where.x == fBounds.left && where.y == fBounds.top)
		return;
 
	// make sure scrolling is within valid bounds
	if (fHorScroller) {
		float min, max;
		fHorScroller->GetRange(&min, &max);
 
		if (where.x < min)
			where.x = min;
		else if (where.x > max)
			where.x = max;
	}
	if (fVerScroller) {
		float min, max;
		fVerScroller->GetRange(&min, &max);
 
		if (where.y < min)
			where.y = min;
		else if (where.y > max)
			where.y = max;
	}
 
	_CheckLockAndSwitchCurrent();
 
	float xDiff = where.x - fBounds.left;
	float yDiff = where.y - fBounds.top;
 
	// if we're attached to a window tell app_server about this change
	if (fOwner) {
		fOwner->fLink->StartMessage(AS_VIEW_SCROLL);
		fOwner->fLink->Attach<float>(xDiff);
		fOwner->fLink->Attach<float>(yDiff);
 
		fOwner->fLink->Flush();
 
//		fState->valid_flags &= ~B_VIEW_FRAME_BIT;
	}
 
	// we modify our bounds rectangle by deltaX/deltaY coord units hor/ver.
	fBounds.OffsetTo(where.x, where.y);
 
	// then set the new values of the scrollbars
	if (fHorScroller && xDiff != 0.0)
		fHorScroller->SetValue(fBounds.left);
	if (fVerScroller && yDiff != 0.0)
		fVerScroller->SetValue(fBounds.top);
 
}
 
 
status_t
BView::SetEventMask(uint32 mask, uint32 options)
{
	if (fEventMask == mask && fEventOptions == options)
		return B_OK;
 
	// don't change the mask if it's zero and we've got options
	if (mask != 0 || options == 0)
		fEventMask = mask | (fEventMask & 0xffff0000);
	fEventOptions = options;
 
	fState->archiving_flags |= B_VIEW_EVENT_MASK_BIT;
 
	if (fOwner) {
		_CheckLockAndSwitchCurrent();
 
		fOwner->fLink->StartMessage(AS_VIEW_SET_EVENT_MASK);
		fOwner->fLink->Attach<uint32>(mask);
		fOwner->fLink->Attach<uint32>(options);
		fOwner->fLink->Flush();
	}
 
	return B_OK;
}
 
 
uint32
BView::EventMask()
{
	return fEventMask;
}
 
 
status_t
BView::SetMouseEventMask(uint32 mask, uint32 options)
{
	// Just don't do anything if the view is not yet attached
	// or we were called outside of BView::MouseDown()
	if (fOwner != NULL
		&& fOwner->CurrentMessage() != NULL
		&& fOwner->CurrentMessage()->what == B_MOUSE_DOWN) {
		_CheckLockAndSwitchCurrent();
		fMouseEventOptions = options;
 
		fOwner->fLink->StartMessage(AS_VIEW_SET_MOUSE_EVENT_MASK);
		fOwner->fLink->Attach<uint32>(mask);
		fOwner->fLink->Attach<uint32>(options);
		fOwner->fLink->Flush();
		return B_OK;
	}
 
	return B_ERROR;
}
 
 
//	#pragma mark - Graphic State Functions
 
 
void
BView::PushState()
{
	_CheckOwnerLockAndSwitchCurrent();
 
	fOwner->fLink->StartMessage(AS_VIEW_PUSH_STATE);
 
	// initialize origin, scale and transform, new states start "clean".
	fState->valid_flags |= B_VIEW_SCALE_BIT | B_VIEW_ORIGIN_BIT
		| B_VIEW_TRANSFORM_BIT;
	fState->scale = 1.0f;
	fState->origin.Set(0, 0);
	fState->transform.Reset();
}
 
 
void
BView::PopState()
{
	_CheckOwnerLockAndSwitchCurrent();
 
	fOwner->fLink->StartMessage(AS_VIEW_POP_STATE);
	_FlushIfNotInTransaction();
 
	// invalidate all flags (except those that are not part of pop/push)
	fState->valid_flags = B_VIEW_VIEW_COLOR_BIT;
}
 
 
void
BView::SetOrigin(BPoint where)
{
	SetOrigin(where.x, where.y);
}
 
 
void
BView::SetOrigin(float x, float y)
{
	if (fState->IsValid(B_VIEW_ORIGIN_BIT)
		&& x == fState->origin.x && y == fState->origin.y)
		return;
 
	fState->origin.x = x;
	fState->origin.y = y;
 
	if (_CheckOwnerLockAndSwitchCurrent()) {
		fOwner->fLink->StartMessage(AS_VIEW_SET_ORIGIN);
		fOwner->fLink->Attach<float>(x);
		fOwner->fLink->Attach<float>(y);
 
		fState->valid_flags |= B_VIEW_ORIGIN_BIT;
	}
 
	// our local coord system origin has changed, so when archiving we'll add
	// this too
	fState->archiving_flags |= B_VIEW_ORIGIN_BIT;
}
 
 
BPoint
BView::Origin() const
{
	if (!fState->IsValid(B_VIEW_ORIGIN_BIT)) {
		// we don't keep graphics state information, therefor
		// we need to ask the server for the origin after PopState()
		_CheckOwnerLockAndSwitchCurrent();
 
		fOwner->fLink->StartMessage(AS_VIEW_GET_ORIGIN);
 
		int32 code;
		if (fOwner->fLink->FlushWithReply(code) == B_OK && code == B_OK)
			fOwner->fLink->Read<BPoint>(&fState->origin);
 
		fState->valid_flags |= B_VIEW_ORIGIN_BIT;
	}
 
	return fState->origin;
}
 
 
void
BView::SetScale(float scale) const
{
	if (fState->IsValid(B_VIEW_SCALE_BIT) && scale == fState->scale)
		return;
 
	if (fOwner) {
		_CheckLockAndSwitchCurrent();
 
		fOwner->fLink->StartMessage(AS_VIEW_SET_SCALE);
		fOwner->fLink->Attach<float>(scale);
 
		fState->valid_flags |= B_VIEW_SCALE_BIT;
	}
 
	fState->scale = scale;
	fState->archiving_flags |= B_VIEW_SCALE_BIT;
}
 
 
float
BView::Scale() const
{
	if (!fState->IsValid(B_VIEW_SCALE_BIT) && fOwner) {
		_CheckLockAndSwitchCurrent();
 
		fOwner->fLink->StartMessage(AS_VIEW_GET_SCALE);
 
 		int32 code;
		if (fOwner->fLink->FlushWithReply(code) == B_OK && code == B_OK)
			fOwner->fLink->Read<float>(&fState->scale);
 
		fState->valid_flags |= B_VIEW_SCALE_BIT;
	}
 
	return fState->scale;
}
 
 
void
BView::SetTransform(BAffineTransform transform)
{
	if (fState->IsValid(B_VIEW_TRANSFORM_BIT) && transform == fState->transform)
		return;
 
	if (fOwner != NULL) {
		_CheckLockAndSwitchCurrent();
 
		fOwner->fLink->StartMessage(AS_VIEW_SET_TRANSFORM);
		fOwner->fLink->Attach<BAffineTransform>(transform);
 
		fState->valid_flags |= B_VIEW_TRANSFORM_BIT;
	}
 
	fState->transform = transform;
	fState->archiving_flags |= B_VIEW_TRANSFORM_BIT;
}
 
 
BAffineTransform
BView::Transform() const
{
	if (!fState->IsValid(B_VIEW_TRANSFORM_BIT) && fOwner != NULL) {
		_CheckLockAndSwitchCurrent();
 
		fOwner->fLink->StartMessage(AS_VIEW_GET_TRANSFORM);
 
 		int32 code;
		if (fOwner->fLink->FlushWithReply(code) == B_OK && code == B_OK)
			fOwner->fLink->Read<BAffineTransform>(&fState->transform);
 
		fState->valid_flags |= B_VIEW_TRANSFORM_BIT;
	}
 
	return fState->transform;
}
 
 
void
BView::TranslateBy(double x, double y)
{
	if (fOwner != NULL) {
		_CheckLockAndSwitchCurrent();
 
		fOwner->fLink->StartMessage(AS_VIEW_AFFINE_TRANSLATE);
		fOwner->fLink->Attach<double>(x);
		fOwner->fLink->Attach<double>(y);
 
		fState->valid_flags &= ~B_VIEW_TRANSFORM_BIT;
	}
 
	fState->archiving_flags |= B_VIEW_TRANSFORM_BIT;
}
 
 
void
BView::ScaleBy(double x, double y)
{
	if (fOwner != NULL) {
		_CheckLockAndSwitchCurrent();
 
		fOwner->fLink->StartMessage(AS_VIEW_AFFINE_SCALE);
		fOwner->fLink->Attach<double>(x);
		fOwner->fLink->Attach<double>(y);
 
		fState->valid_flags &= ~B_VIEW_TRANSFORM_BIT;
	}
 
	fState->archiving_flags |= B_VIEW_TRANSFORM_BIT;
}
 
 
void
BView::RotateBy(double angleRadians)
{
	if (fOwner != NULL) {
		_CheckLockAndSwitchCurrent();
 
		fOwner->fLink->StartMessage(AS_VIEW_AFFINE_ROTATE);
		fOwner->fLink->Attach<double>(angleRadians);
 
		fState->valid_flags &= ~B_VIEW_TRANSFORM_BIT;
	}
 
	fState->archiving_flags |= B_VIEW_TRANSFORM_BIT;
}
 
 
void
BView::SetLineMode(cap_mode lineCap, join_mode lineJoin, float miterLimit)
{
	if (fState->IsValid(B_VIEW_LINE_MODES_BIT)
		&& lineCap == fState->line_cap && lineJoin == fState->line_join
		&& miterLimit == fState->miter_limit)
		return;
 
	if (fOwner) {
		_CheckLockAndSwitchCurrent();
 
		ViewSetLineModeInfo info;
		info.lineJoin = lineJoin;
		info.lineCap = lineCap;
		info.miterLimit = miterLimit;
 
		fOwner->fLink->StartMessage(AS_VIEW_SET_LINE_MODE);
		fOwner->fLink->Attach<ViewSetLineModeInfo>(info);
 
		fState->valid_flags |= B_VIEW_LINE_MODES_BIT;
	}
 
	fState->line_cap = lineCap;
	fState->line_join = lineJoin;
	fState->miter_limit = miterLimit;
 
	fState->archiving_flags |= B_VIEW_LINE_MODES_BIT;
}
 
 
join_mode
BView::LineJoinMode() const
{
	// This will update the current state, if necessary
	if (!fState->IsValid(B_VIEW_LINE_MODES_BIT))
		LineMiterLimit();
 
	return fState->line_join;
}
 
 
cap_mode
BView::LineCapMode() const
{
	// This will update the current state, if necessary
	if (!fState->IsValid(B_VIEW_LINE_MODES_BIT))
		LineMiterLimit();
 
	return fState->line_cap;
}
 
 
float
BView::LineMiterLimit() const
{
	if (!fState->IsValid(B_VIEW_LINE_MODES_BIT) && fOwner) {
		_CheckLockAndSwitchCurrent();
 
		fOwner->fLink->StartMessage(AS_VIEW_GET_LINE_MODE);
 
		int32 code;
		if (fOwner->fLink->FlushWithReply(code) == B_OK && code == B_OK) {
 
			ViewSetLineModeInfo info;
			fOwner->fLink->Read<ViewSetLineModeInfo>(&info);
 
			fState->line_cap = info.lineCap;
			fState->line_join = info.lineJoin;
			fState->miter_limit = info.miterLimit;
		}
 
		fState->valid_flags |= B_VIEW_LINE_MODES_BIT;
	}
 
	return fState->miter_limit;
}
 
 
void
BView::SetFillRule(int32 fillRule)
{
	if (fState->IsValid(B_VIEW_FILL_RULE_BIT) && fillRule == fState->fill_rule)
		return;
 
	if (fOwner) {
		_CheckLockAndSwitchCurrent();
 
		fOwner->fLink->StartMessage(AS_VIEW_SET_FILL_RULE);
		fOwner->fLink->Attach<int32>(fillRule);
 
		fState->valid_flags |= B_VIEW_FILL_RULE_BIT;
	}
 
	fState->fill_rule = fillRule;
 
	fState->archiving_flags |= B_VIEW_FILL_RULE_BIT;
}
 
 
int32
BView::FillRule() const
{
	if (!fState->IsValid(B_VIEW_FILL_RULE_BIT) && fOwner) {
		_CheckLockAndSwitchCurrent();
 
		fOwner->fLink->StartMessage(AS_VIEW_GET_FILL_RULE);
 
		int32 code;
		if (fOwner->fLink->FlushWithReply(code) == B_OK && code == B_OK) {
 
			int32 fillRule;
			fOwner->fLink->Read<int32>(&fillRule);
 
			fState->fill_rule = fillRule;
		}
 
		fState->valid_flags |= B_VIEW_FILL_RULE_BIT;
	}
 
	return fState->fill_rule;
}
 
 
void
BView::SetDrawingMode(drawing_mode mode)
{
	if (fState->IsValid(B_VIEW_DRAWING_MODE_BIT)
		&& mode == fState->drawing_mode)
		return;
 
	if (fOwner) {
		_CheckLockAndSwitchCurrent();
 
		fOwner->fLink->StartMessage(AS_VIEW_SET_DRAWING_MODE);
		fOwner->fLink->Attach<int8>((int8)mode);
 
		fState->valid_flags |= B_VIEW_DRAWING_MODE_BIT;
	}
 
	fState->drawing_mode = mode;
	fState->archiving_flags |= B_VIEW_DRAWING_MODE_BIT;
}
 
 
drawing_mode
BView::DrawingMode() const
{
	if (!fState->IsValid(B_VIEW_DRAWING_MODE_BIT) && fOwner) {
		_CheckLockAndSwitchCurrent();
 
		fOwner->fLink->StartMessage(AS_VIEW_GET_DRAWING_MODE);
 
		int32 code;
		if (fOwner->fLink->FlushWithReply(code) == B_OK
			&& code == B_OK) {
			int8 drawingMode;
			fOwner->fLink->Read<int8>(&drawingMode);
 
			fState->drawing_mode = (drawing_mode)drawingMode;
			fState->valid_flags |= B_VIEW_DRAWING_MODE_BIT;
		}
	}
 
	return fState->drawing_mode;
}
 
 
void
BView::SetBlendingMode(source_alpha sourceAlpha, alpha_function alphaFunction)
{
	if (fState->IsValid(B_VIEW_BLENDING_BIT)
		&& sourceAlpha == fState->alpha_source_mode
		&& alphaFunction == fState->alpha_function_mode)
		return;
 
	if (fOwner) {
		_CheckLockAndSwitchCurrent();
 
		ViewBlendingModeInfo info;
		info.sourceAlpha = sourceAlpha;
		info.alphaFunction = alphaFunction;
 
		fOwner->fLink->StartMessage(AS_VIEW_SET_BLENDING_MODE);
		fOwner->fLink->Attach<ViewBlendingModeInfo>(info);
 
		fState->valid_flags |= B_VIEW_BLENDING_BIT;
	}
 
	fState->alpha_source_mode = sourceAlpha;
	fState->alpha_function_mode = alphaFunction;
 
	fState->archiving_flags |= B_VIEW_BLENDING_BIT;
}
 
 
void
BView::GetBlendingMode(source_alpha* _sourceAlpha,
	alpha_function* _alphaFunction) const
{
	if (!fState->IsValid(B_VIEW_BLENDING_BIT) && fOwner) {
		_CheckLockAndSwitchCurrent();
 
		fOwner->fLink->StartMessage(AS_VIEW_GET_BLENDING_MODE);
 
		int32 code;
 		if (fOwner->fLink->FlushWithReply(code) == B_OK && code == B_OK) {
 			ViewBlendingModeInfo info;
			fOwner->fLink->Read<ViewBlendingModeInfo>(&info);
 
			fState->alpha_source_mode = info.sourceAlpha;
			fState->alpha_function_mode = info.alphaFunction;
 
			fState->valid_flags |= B_VIEW_BLENDING_BIT;
		}
	}
 
	if (_sourceAlpha)
		*_sourceAlpha = fState->alpha_source_mode;
 
	if (_alphaFunction)
		*_alphaFunction = fState->alpha_function_mode;
}
 
 
void
BView::MovePenTo(BPoint point)
{
	MovePenTo(point.x, point.y);
}
 
 
void
BView::MovePenTo(float x, float y)
{
	if (fState->IsValid(B_VIEW_PEN_LOCATION_BIT)
		&& x == fState->pen_location.x && y == fState->pen_location.y)
		return;
 
	if (fOwner) {
		_CheckLockAndSwitchCurrent();
 
		fOwner->fLink->StartMessage(AS_VIEW_SET_PEN_LOC);
		fOwner->fLink->Attach<BPoint>(BPoint(x, y));
 
		fState->valid_flags |= B_VIEW_PEN_LOCATION_BIT;
	}
 
	fState->pen_location.x = x;
	fState->pen_location.y = y;
 
	fState->archiving_flags |= B_VIEW_PEN_LOCATION_BIT;
}
 
 
void
BView::MovePenBy(float x, float y)
{
	// this will update the pen location if necessary
	if (!fState->IsValid(B_VIEW_PEN_LOCATION_BIT))
		PenLocation();
 
	MovePenTo(fState->pen_location.x + x, fState->pen_location.y + y);
}
 
 
BPoint
BView::PenLocation() const
{
	if (!fState->IsValid(B_VIEW_PEN_LOCATION_BIT) && fOwner) {
		_CheckLockAndSwitchCurrent();
 
		fOwner->fLink->StartMessage(AS_VIEW_GET_PEN_LOC);
 
		int32 code;
		if (fOwner->fLink->FlushWithReply(code) == B_OK
			&& code == B_OK) {
			fOwner->fLink->Read<BPoint>(&fState->pen_location);
 
			fState->valid_flags |= B_VIEW_PEN_LOCATION_BIT;
		}
	}
 
	return fState->pen_location;
}
 
 
void
BView::SetPenSize(float size)
{
	if (fState->IsValid(B_VIEW_PEN_SIZE_BIT) && size == fState->pen_size)
		return;
 
	if (fOwner) {
		_CheckLockAndSwitchCurrent();
 
		fOwner->fLink->StartMessage(AS_VIEW_SET_PEN_SIZE);
		fOwner->fLink->Attach<float>(size);
 
		fState->valid_flags |= B_VIEW_PEN_SIZE_BIT;
	}
 
	fState->pen_size = size;
	fState->archiving_flags	|= B_VIEW_PEN_SIZE_BIT;
}
 
 
float
BView::PenSize() const
{
	if (!fState->IsValid(B_VIEW_PEN_SIZE_BIT) && fOwner) {
		_CheckLockAndSwitchCurrent();
 
		fOwner->fLink->StartMessage(AS_VIEW_GET_PEN_SIZE);
 
		int32 code;
		if (fOwner->fLink->FlushWithReply(code) == B_OK
			&& code == B_OK) {
			fOwner->fLink->Read<float>(&fState->pen_size);
 
			fState->valid_flags |= B_VIEW_PEN_SIZE_BIT;
		}
	}
 
	return fState->pen_size;
}
 
 
void
BView::SetHighColor(rgb_color color)
{
	SetHighUIColor(B_NO_COLOR);
 
	// are we up-to-date already?
	if (fState->IsValid(B_VIEW_HIGH_COLOR_BIT)
		&& fState->high_color == color)
		return;
 
	if (fOwner) {
		_CheckLockAndSwitchCurrent();
 
		fOwner->fLink->StartMessage(AS_VIEW_SET_HIGH_COLOR);
		fOwner->fLink->Attach<rgb_color>(color);
 
		fState->valid_flags |= B_VIEW_HIGH_COLOR_BIT;
	}
 
	fState->high_color = color;
 
	fState->archiving_flags |= B_VIEW_HIGH_COLOR_BIT;
}
 
 
rgb_color
BView::HighColor() const
{
	if (!fState->IsValid(B_VIEW_HIGH_COLOR_BIT) && fOwner) {
		_CheckLockAndSwitchCurrent();
 
		fOwner->fLink->StartMessage(AS_VIEW_GET_HIGH_COLOR);
 
		int32 code;
		if (fOwner->fLink->FlushWithReply(code) == B_OK
			&& code == B_OK) {
			fOwner->fLink->Read<rgb_color>(&fState->high_color);
 
			fState->valid_flags |= B_VIEW_HIGH_COLOR_BIT;
		}
	}
 
	return fState->high_color;
}
 
 
void
BView::SetHighUIColor(color_which which, float tint)
{
	if (fState->IsValid(B_VIEW_WHICH_HIGH_COLOR_BIT)
		&& fState->which_high_color == which
		&& fState->which_high_color_tint == tint)
		return;
 
	if (fOwner != NULL) {
		_CheckLockAndSwitchCurrent();
 
		fOwner->fLink->StartMessage(AS_VIEW_SET_HIGH_UI_COLOR);
		fOwner->fLink->Attach<color_which>(which);
		fOwner->fLink->Attach<float>(tint);
 
		fState->valid_flags |= B_VIEW_WHICH_HIGH_COLOR_BIT;
	}
 
	fState->which_high_color = which;
	fState->which_high_color_tint = tint;
 
	if (which != B_NO_COLOR) {
		fState->archiving_flags |= B_VIEW_WHICH_HIGH_COLOR_BIT;
		fState->archiving_flags &= ~B_VIEW_HIGH_COLOR_BIT;
		fState->valid_flags |= B_VIEW_HIGH_COLOR_BIT;
 
		fState->high_color = tint_color(ui_color(which), tint);
	} else {
		fState->valid_flags &= ~B_VIEW_HIGH_COLOR_BIT;
		fState->archiving_flags &= ~B_VIEW_WHICH_HIGH_COLOR_BIT;
	}
}
 
 
color_which
BView::HighUIColor(float* tint) const
{
	if (!fState->IsValid(B_VIEW_WHICH_HIGH_COLOR_BIT)
		&& fOwner != NULL) {
		_CheckLockAndSwitchCurrent();
 
		fOwner->fLink->StartMessage(AS_VIEW_GET_HIGH_UI_COLOR);
 
		int32 code;
		if (fOwner->fLink->FlushWithReply(code) == B_OK
			&& code == B_OK) {
			fOwner->fLink->Read<color_which>(&fState->which_high_color);
			fOwner->fLink->Read<float>(&fState->which_high_color_tint);
			fOwner->fLink->Read<rgb_color>(&fState->high_color);
 
			fState->valid_flags |= B_VIEW_WHICH_HIGH_COLOR_BIT;
			fState->valid_flags |= B_VIEW_HIGH_COLOR_BIT;
		}
	}
 
	if (tint != NULL)
		*tint = fState->which_high_color_tint;
 
	return fState->which_high_color;
}
 
 
void
BView::SetLowColor(rgb_color color)
{
	SetLowUIColor(B_NO_COLOR);
 
	if (fState->IsValid(B_VIEW_LOW_COLOR_BIT)
		&& fState->low_color == color)
		return;
 
	if (fOwner) {
		_CheckLockAndSwitchCurrent();
 
		fOwner->fLink->StartMessage(AS_VIEW_SET_LOW_COLOR);
		fOwner->fLink->Attach<rgb_color>(color);
 
		fState->valid_flags |= B_VIEW_LOW_COLOR_BIT;
	}
 
	fState->low_color = color;
 
	fState->archiving_flags |= B_VIEW_LOW_COLOR_BIT;
}
 
 
rgb_color
BView::LowColor() const
{
	if (!fState->IsValid(B_VIEW_LOW_COLOR_BIT) && fOwner) {
		_CheckLockAndSwitchCurrent();
 
		fOwner->fLink->StartMessage(AS_VIEW_GET_LOW_COLOR);
 
		int32 code;
		if (fOwner->fLink->FlushWithReply(code) == B_OK
			&& code == B_OK) {
			fOwner->fLink->Read<rgb_color>(&fState->low_color);
 
			fState->valid_flags |= B_VIEW_LOW_COLOR_BIT;
		}
	}
 
	return fState->low_color;
}
 
 
void
BView::SetLowUIColor(color_which which, float tint)
{
	if (fState->IsValid(B_VIEW_WHICH_LOW_COLOR_BIT)
		&& fState->which_low_color == which
		&& fState->which_low_color_tint == tint)
		return;
 
	if (fOwner != NULL) {
		_CheckLockAndSwitchCurrent();
 
		fOwner->fLink->StartMessage(AS_VIEW_SET_LOW_UI_COLOR);
		fOwner->fLink->Attach<color_which>(which);
		fOwner->fLink->Attach<float>(tint);
 
		fState->valid_flags |= B_VIEW_WHICH_LOW_COLOR_BIT;
	}
 
	fState->which_low_color = which;
	fState->which_low_color_tint = tint;
 
	if (which != B_NO_COLOR) {
		fState->archiving_flags |= B_VIEW_WHICH_LOW_COLOR_BIT;
		fState->archiving_flags &= ~B_VIEW_LOW_COLOR_BIT;
		fState->valid_flags |= B_VIEW_LOW_COLOR_BIT;
 
		fState->low_color = tint_color(ui_color(which), tint);
	} else {
		fState->valid_flags &= ~B_VIEW_LOW_COLOR_BIT;
		fState->archiving_flags &= ~B_VIEW_WHICH_LOW_COLOR_BIT;
	}
}
 
 
color_which
BView::LowUIColor(float* tint) const
{
	if (!fState->IsValid(B_VIEW_WHICH_LOW_COLOR_BIT)
		&& fOwner != NULL) {
		_CheckLockAndSwitchCurrent();
 
		fOwner->fLink->StartMessage(AS_VIEW_GET_LOW_UI_COLOR);
 
		int32 code;
		if (fOwner->fLink->FlushWithReply(code) == B_OK
			&& code == B_OK) {
			fOwner->fLink->Read<color_which>(&fState->which_low_color);
			fOwner->fLink->Read<float>(&fState->which_low_color_tint);
			fOwner->fLink->Read<rgb_color>(&fState->low_color);
 
			fState->valid_flags |= B_VIEW_WHICH_LOW_COLOR_BIT;
			fState->valid_flags |= B_VIEW_LOW_COLOR_BIT;
		}
	}
 
	if (tint != NULL)
		*tint = fState->which_low_color_tint;
 
	return fState->which_low_color;
}
 
 
bool
BView::HasDefaultColors() const
{
	// If we don't have any of these flags, then we have default colors
	uint32 testMask = B_VIEW_VIEW_COLOR_BIT | B_VIEW_HIGH_COLOR_BIT
		| B_VIEW_LOW_COLOR_BIT | B_VIEW_WHICH_VIEW_COLOR_BIT
		| B_VIEW_WHICH_HIGH_COLOR_BIT | B_VIEW_WHICH_LOW_COLOR_BIT;
 
	return (fState->archiving_flags & testMask) == 0;
}
 
 
bool
BView::HasSystemColors() const
{
	return fState->which_view_color == B_PANEL_BACKGROUND_COLOR
		&& fState->which_high_color == B_PANEL_TEXT_COLOR
		&& fState->which_low_color == B_PANEL_BACKGROUND_COLOR
		&& fState->which_view_color_tint == B_NO_TINT
		&& fState->which_high_color_tint == B_NO_TINT
		&& fState->which_low_color_tint == B_NO_TINT;
}
 
 
void
BView::AdoptParentColors()
{
	AdoptViewColors(Parent());
}
 
 
void
BView::AdoptSystemColors()
{
	SetViewUIColor(B_PANEL_BACKGROUND_COLOR);
	SetLowUIColor(B_PANEL_BACKGROUND_COLOR);
	SetHighUIColor(B_PANEL_TEXT_COLOR);
}
 
 
void
BView::AdoptViewColors(BView* view)
{
	if (view == NULL || (view->Window() != NULL && !view->LockLooper()))
		return;
 
	float tint = B_NO_TINT;
	float viewTint = tint;
	color_which viewWhich = view->ViewUIColor(&viewTint);
 
	// View color
	if (viewWhich != B_NO_COLOR)
		SetViewUIColor(viewWhich, viewTint);
	else
		SetViewColor(view->ViewColor());
 
	// Low color
	color_which which = view->LowUIColor(&tint);
	if (which != B_NO_COLOR)
		SetLowUIColor(which, tint);
	else if (viewWhich != B_NO_COLOR)
		SetLowUIColor(viewWhich, viewTint);
	else
		SetLowColor(view->LowColor());
 
	// High color
	which = view->HighUIColor(&tint);
	if (which != B_NO_COLOR)
		SetHighUIColor(which, tint);
	else
		SetHighColor(view->HighColor());
 
	if (view->Window() != NULL)
		view->UnlockLooper();
}
 
 
void
BView::SetViewColor(rgb_color color)
{
	SetViewUIColor(B_NO_COLOR);
 
	if (fState->IsValid(B_VIEW_VIEW_COLOR_BIT)
		&& fState->view_color == color)
		return;
 
	if (fOwner) {
		_CheckLockAndSwitchCurrent();
 
		fOwner->fLink->StartMessage(AS_VIEW_SET_VIEW_COLOR);
		fOwner->fLink->Attach<rgb_color>(color);
		fOwner->fLink->Flush();
 
		fState->valid_flags |= B_VIEW_VIEW_COLOR_BIT;
	}
 
	fState->view_color = color;
 
	fState->archiving_flags |= B_VIEW_VIEW_COLOR_BIT;
}
 
 
rgb_color
BView::ViewColor() const
{
	if (!fState->IsValid(B_VIEW_VIEW_COLOR_BIT) && fOwner) {
		_CheckLockAndSwitchCurrent();
 
		fOwner->fLink->StartMessage(AS_VIEW_GET_VIEW_COLOR);
 
		int32 code;
		if (fOwner->fLink->FlushWithReply(code) == B_OK
			&& code == B_OK) {
			fOwner->fLink->Read<rgb_color>(&fState->view_color);
 
			fState->valid_flags |= B_VIEW_VIEW_COLOR_BIT;
		}
	}
 
	return fState->view_color;
}
 
 
void
BView::SetViewUIColor(color_which which, float tint)
{
	if (fState->IsValid(B_VIEW_WHICH_VIEW_COLOR_BIT)
		&& fState->which_view_color == which
		&& fState->which_view_color_tint == tint)
		return;
 
	if (fOwner != NULL) {
		_CheckLockAndSwitchCurrent();
 
		fOwner->fLink->StartMessage(AS_VIEW_SET_VIEW_UI_COLOR);
		fOwner->fLink->Attach<color_which>(which);
		fOwner->fLink->Attach<float>(tint);
 
		fState->valid_flags |= B_VIEW_WHICH_VIEW_COLOR_BIT;
	}
 
	fState->which_view_color = which;
	fState->which_view_color_tint = tint;
 
	if (which != B_NO_COLOR) {
		fState->archiving_flags |= B_VIEW_WHICH_VIEW_COLOR_BIT;
		fState->archiving_flags &= ~B_VIEW_VIEW_COLOR_BIT;
		fState->valid_flags |= B_VIEW_VIEW_COLOR_BIT;
 
		fState->view_color = tint_color(ui_color(which), tint);
	} else {
		fState->valid_flags &= ~B_VIEW_VIEW_COLOR_BIT;
		fState->archiving_flags &= ~B_VIEW_WHICH_VIEW_COLOR_BIT;
	}
 
	if (!fState->IsValid(B_VIEW_WHICH_LOW_COLOR_BIT))
		SetLowUIColor(which, tint);
}
 
 
color_which
BView::ViewUIColor(float* tint) const
{
	if (!fState->IsValid(B_VIEW_WHICH_VIEW_COLOR_BIT)
		&& fOwner != NULL) {
		_CheckLockAndSwitchCurrent();
 
		fOwner->fLink->StartMessage(AS_VIEW_GET_VIEW_UI_COLOR);
 
		int32 code;
		if (fOwner->fLink->FlushWithReply(code) == B_OK
			&& code == B_OK) {
			fOwner->fLink->Read<color_which>(&fState->which_view_color);
			fOwner->fLink->Read<float>(&fState->which_view_color_tint);
			fOwner->fLink->Read<rgb_color>(&fState->view_color);
 
			fState->valid_flags |= B_VIEW_WHICH_VIEW_COLOR_BIT;
			fState->valid_flags |= B_VIEW_VIEW_COLOR_BIT;
		}
	}
 
	if (tint != NULL)
		*tint = fState->which_view_color_tint;
 
	return fState->which_view_color;
}
 
 
void
BView::ForceFontAliasing(bool enable)
{
	if (fState->IsValid(B_VIEW_FONT_ALIASING_BIT)
		&& enable == fState->font_aliasing)
		return;
 
	if (fOwner) {
		_CheckLockAndSwitchCurrent();
 
		fOwner->fLink->StartMessage(AS_VIEW_PRINT_ALIASING);
		fOwner->fLink->Attach<bool>(enable);
 
		fState->valid_flags |= B_VIEW_FONT_ALIASING_BIT;
	}
 
	fState->font_aliasing = enable;
	fState->archiving_flags |= B_VIEW_FONT_ALIASING_BIT;
}
 
 
void
BView::SetFont(const BFont* font, uint32 mask)
{
	if (!font || mask == 0)
		return;
 
	if (mask == B_FONT_ALL) {
		fState->font = *font;
	} else {
		// TODO: move this into a BFont method
		if (mask & B_FONT_FAMILY_AND_STYLE)
			fState->font.SetFamilyAndStyle(font->FamilyAndStyle());
 
		if (mask & B_FONT_SIZE)
			fState->font.SetSize(font->Size());
 
		if (mask & B_FONT_SHEAR)
			fState->font.SetShear(font->Shear());
 
		if (mask & B_FONT_ROTATION)
			fState->font.SetRotation(font->Rotation());
 
		if (mask & B_FONT_FALSE_BOLD_WIDTH)
			fState->font.SetFalseBoldWidth(font->FalseBoldWidth());
 
		if (mask & B_FONT_SPACING)
			fState->font.SetSpacing(font->Spacing());
 
		if (mask & B_FONT_ENCODING)
			fState->font.SetEncoding(font->Encoding());
 
		if (mask & B_FONT_FACE)
			fState->font.SetFace(font->Face());
 
		if (mask & B_FONT_FLAGS)
			fState->font.SetFlags(font->Flags());
	}
 
	fState->font_flags |= mask;
 
	if (fOwner) {
		_CheckLockAndSwitchCurrent();
 
		fState->UpdateServerFontState(*fOwner->fLink);
		fState->valid_flags |= B_VIEW_FONT_BIT;
	}
 
	fState->archiving_flags |= B_VIEW_FONT_BIT;
	// TODO: InvalidateLayout() here for convenience?
}
 
 
void
BView::GetFont(BFont* font) const
{
	if (!fState->IsValid(B_VIEW_FONT_BIT)) {
		// we don't keep graphics state information, therefor
		// we need to ask the server for the origin after PopState()
		_CheckOwnerLockAndSwitchCurrent();
 
		// TODO: add a font getter!
		fState->UpdateFrom(*fOwner->fLink);
	}
 
	*font = fState->font;
}
 
 
void
BView::GetFontHeight(font_height* height) const
{
	fState->font.GetHeight(height);
}
 
 
void
BView::SetFontSize(float size)
{
	BFont font;
	font.SetSize(size);
 
	SetFont(&font, B_FONT_SIZE);
}
 
 
float
BView::StringWidth(const char* string) const
{
	return fState->font.StringWidth(string);
}
 
 
float
BView::StringWidth(const char* string, int32 length) const
{
	return fState->font.StringWidth(string, length);
}
 
 
void
BView::GetStringWidths(char* stringArray[], int32 lengthArray[],
	int32 numStrings, float widthArray[]) const
{
	fState->font.GetStringWidths(const_cast<const char**>(stringArray),
		const_cast<const int32*>(lengthArray), numStrings, widthArray);
}
 
 
void
BView::TruncateString(BString* string, uint32 mode, float width) const
{
	fState->font.TruncateString(string, mode, width);
}
 
 
void
BView::ClipToPicture(BPicture* picture, BPoint where, bool sync)
{
	_ClipToPicture(picture, where, false, sync);
}
 
 
void
BView::ClipToInversePicture(BPicture* picture, BPoint where, bool sync)
{
	_ClipToPicture(picture, where, true, sync);
}
 
 
void
BView::GetClippingRegion(BRegion* region) const
{
	if (!region)
		return;
 
	// NOTE: the client has no idea when the clipping in the server
	// changed, so it is always read from the server
	region->MakeEmpty();
 
 
	if (fOwner) {
		if (fIsPrinting && _CheckOwnerLock()) {
			region->Set(fState->print_rect);
			return;
		}
 
		_CheckLockAndSwitchCurrent();
		fOwner->fLink->StartMessage(AS_VIEW_GET_CLIP_REGION);
 
 		int32 code;
 		if (fOwner->fLink->FlushWithReply(code) == B_OK
 			&& code == B_OK) {
			fOwner->fLink->ReadRegion(region);
			fState->valid_flags |= B_VIEW_CLIP_REGION_BIT;
		}
	}
}
 
 
void
BView::ConstrainClippingRegion(BRegion* region)
{
	if (_CheckOwnerLockAndSwitchCurrent()) {
		fOwner->fLink->StartMessage(AS_VIEW_SET_CLIP_REGION);
 
		if (region) {
			int32 count = region->CountRects();
			fOwner->fLink->Attach<int32>(count);
			if (count > 0)
				fOwner->fLink->AttachRegion(*region);
		} else {
			fOwner->fLink->Attach<int32>(-1);
			// '-1' means that in the app_server, there won't be any 'local'
			// clipping region (it will be NULL)
		}
 
		_FlushIfNotInTransaction();
 
		fState->valid_flags &= ~B_VIEW_CLIP_REGION_BIT;
		fState->archiving_flags |= B_VIEW_CLIP_REGION_BIT;
	}
}
 
 
void
BView::ClipToRect(BRect rect)
{
	_ClipToRect(rect, false);
}
 
 
void
BView::ClipToInverseRect(BRect rect)
{
	_ClipToRect(rect, true);
}
 
 
void
BView::ClipToShape(BShape* shape)
{
	_ClipToShape(shape, false);
}
 
 
void
BView::ClipToInverseShape(BShape* shape)
{
	_ClipToShape(shape, true);
}
 
 
//	#pragma mark - Drawing Functions
 
 
void
BView::DrawBitmapAsync(const BBitmap* bitmap, BRect bitmapRect, BRect viewRect,
	uint32 options)
{
	if (bitmap == NULL || fOwner == NULL
		|| !bitmapRect.IsValid() || !viewRect.IsValid())
		return;
 
	_CheckLockAndSwitchCurrent();
 
	ViewDrawBitmapInfo info;
	info.bitmapToken = bitmap->_ServerToken();
	info.options = options;
	info.viewRect = viewRect;
	info.bitmapRect = bitmapRect;
 
	fOwner->fLink->StartMessage(AS_VIEW_DRAW_BITMAP);
	fOwner->fLink->Attach<ViewDrawBitmapInfo>(info);
 
	_FlushIfNotInTransaction();
}
 
 
void
BView::DrawBitmapAsync(const BBitmap* bitmap, BRect bitmapRect, BRect viewRect)
{
	DrawBitmapAsync(bitmap, bitmapRect, viewRect, 0);
}
 
 
void
BView::DrawBitmapAsync(const BBitmap* bitmap, BRect viewRect)
{
	if (bitmap && fOwner) {
		DrawBitmapAsync(bitmap, bitmap->Bounds().OffsetToCopy(B_ORIGIN),
			viewRect, 0);
	}
}
 
 
void
BView::DrawBitmapAsync(const BBitmap* bitmap, BPoint where)
{
	if (bitmap == NULL || fOwner == NULL)
		return;
 
	_CheckLockAndSwitchCurrent();
 
	ViewDrawBitmapInfo info;
	info.bitmapToken = bitmap->_ServerToken();
	info.options = 0;
	info.bitmapRect = bitmap->Bounds().OffsetToCopy(B_ORIGIN);
	info.viewRect = info.bitmapRect.OffsetToCopy(where);
 
	fOwner->fLink->StartMessage(AS_VIEW_DRAW_BITMAP);
	fOwner->fLink->Attach<ViewDrawBitmapInfo>(info);
 
	_FlushIfNotInTransaction();
}
 
 
void
BView::DrawBitmapAsync(const BBitmap* bitmap)
{
	DrawBitmapAsync(bitmap, PenLocation());
}
 
 
void
BView::DrawBitmap(const BBitmap* bitmap, BRect bitmapRect, BRect viewRect,
	uint32 options)
{
	if (fOwner) {
		DrawBitmapAsync(bitmap, bitmapRect, viewRect, options);
		Sync();
	}
}
 
 
void
BView::DrawBitmap(const BBitmap* bitmap, BRect bitmapRect, BRect viewRect)
{
	if (fOwner) {
		DrawBitmapAsync(bitmap, bitmapRect, viewRect, 0);
		Sync();
	}
}
 
 
void
BView::DrawBitmap(const BBitmap* bitmap, BRect viewRect)
{
	if (bitmap && fOwner) {
		DrawBitmap(bitmap, bitmap->Bounds().OffsetToCopy(B_ORIGIN), viewRect,
			0);
	}
}
 
 
void
BView::DrawBitmap(const BBitmap* bitmap, BPoint where)
{
	if (fOwner) {
		DrawBitmapAsync(bitmap, where);
		Sync();
	}
}
 
 
void
BView::DrawBitmap(const BBitmap* bitmap)
{
	DrawBitmap(bitmap, PenLocation());
}
 
 
void
BView::DrawChar(char c)
{
	DrawString(&c, 1, PenLocation());
}
 
 
void
BView::DrawChar(char c, BPoint location)
{
	DrawString(&c, 1, location);
}
 
 
void
BView::DrawString(const char* string, escapement_delta* delta)
{
	if (string == NULL)
		return;
 
	DrawString(string, strlen(string), PenLocation(), delta);
}
 
 
void
BView::DrawString(const char* string, BPoint location, escapement_delta* delta)
{
	if (string == NULL)
		return;
 
	DrawString(string, strlen(string), location, delta);
}
 
 
void
BView::DrawString(const char* string, int32 length, escapement_delta* delta)
{
	DrawString(string, length, PenLocation(), delta);
}
 
 
void
BView::DrawString(const char* string, int32 length, BPoint location,
	escapement_delta* delta)
{
	if (fOwner == NULL || string == NULL || length < 1)
		return;
 
	_CheckLockAndSwitchCurrent();
 
	ViewDrawStringInfo info;
	info.stringLength = length;
	info.location = location;
	if (delta != NULL)
		info.delta = *delta;
 
	// quite often delta will be NULL
	if (delta)
		fOwner->fLink->StartMessage(AS_DRAW_STRING_WITH_DELTA);
	else
		fOwner->fLink->StartMessage(AS_DRAW_STRING);
 
	fOwner->fLink->Attach<ViewDrawStringInfo>(info);
	fOwner->fLink->Attach(string, length);
 
	_FlushIfNotInTransaction();
 
	// this modifies our pen location, so we invalidate the flag.
	fState->valid_flags &= ~B_VIEW_PEN_LOCATION_BIT;
}
 
 
void
BView::DrawString(const char* string, const BPoint* locations,
	int32 locationCount)
{
	if (string == NULL)
		return;
 
	DrawString(string, strlen(string), locations, locationCount);
}
 
 
void
BView::DrawString(const char* string, int32 length, const BPoint* locations,
	int32 locationCount)
{
	if (fOwner == NULL || string == NULL || length < 1 || locations == NULL)
		return;
 
	_CheckLockAndSwitchCurrent();
 
	fOwner->fLink->StartMessage(AS_DRAW_STRING_WITH_OFFSETS);
 
	fOwner->fLink->Attach<int32>(length);
	fOwner->fLink->Attach<int32>(locationCount);
	fOwner->fLink->Attach(string, length);
	fOwner->fLink->Attach(locations, locationCount * sizeof(BPoint));
 
	_FlushIfNotInTransaction();
 
	// this modifies our pen location, so we invalidate the flag.
	fState->valid_flags &= ~B_VIEW_PEN_LOCATION_BIT;
}
 
 
void
BView::StrokeEllipse(BPoint center, float xRadius, float yRadius,
	::pattern pattern)
{
	StrokeEllipse(BRect(center.x - xRadius, center.y - yRadius,
		center.x + xRadius, center.y + yRadius), pattern);
}
 
 
void
BView::StrokeEllipse(BRect rect, ::pattern pattern)
{
	if (fOwner == NULL)
		return;
 
	_CheckLockAndSwitchCurrent();
	_UpdatePattern(pattern);
 
	fOwner->fLink->StartMessage(AS_STROKE_ELLIPSE);
	fOwner->fLink->Attach<BRect>(rect);
 
	_FlushIfNotInTransaction();
}
 
 
void
BView::FillEllipse(BPoint center, float xRadius, float yRadius,
	::pattern pattern)
{
	FillEllipse(BRect(center.x - xRadius, center.y - yRadius,
		center.x + xRadius, center.y + yRadius), pattern);
}
 
 
void
BView::FillEllipse(BPoint center, float xRadius, float yRadius,
	const BGradient& gradient)
{
	FillEllipse(BRect(center.x - xRadius, center.y - yRadius,
		center.x + xRadius, center.y + yRadius), gradient);
}
 
 
void
BView::FillEllipse(BRect rect, ::pattern pattern)
{
	if (fOwner == NULL)
		return;
 
	_CheckLockAndSwitchCurrent();
	_UpdatePattern(pattern);
 
	fOwner->fLink->StartMessage(AS_FILL_ELLIPSE);
	fOwner->fLink->Attach<BRect>(rect);
 
	_FlushIfNotInTransaction();
}
 
 
void
BView::FillEllipse(BRect rect, const BGradient& gradient)
{
	if (fOwner == NULL)
		return;
 
	_CheckLockAndSwitchCurrent();
 
	fOwner->fLink->StartMessage(AS_FILL_ELLIPSE_GRADIENT);
	fOwner->fLink->Attach<BRect>(rect);
	fOwner->fLink->AttachGradient(gradient);
 
	_FlushIfNotInTransaction();
}
 
 
void
BView::StrokeArc(BPoint center, float xRadius, float yRadius, float startAngle,
	float arcAngle, ::pattern pattern)
{
	StrokeArc(BRect(center.x - xRadius, center.y - yRadius, center.x + xRadius,
		center.y + yRadius), startAngle, arcAngle, pattern);
}
 
 
void
BView::StrokeArc(BRect rect, float startAngle, float arcAngle,
	::pattern pattern)
{
	if (fOwner == NULL)
		return;
 
	_CheckLockAndSwitchCurrent();
	_UpdatePattern(pattern);
 
	fOwner->fLink->StartMessage(AS_STROKE_ARC);
	fOwner->fLink->Attach<BRect>(rect);
	fOwner->fLink->Attach<float>(startAngle);
	fOwner->fLink->Attach<float>(arcAngle);
 
	_FlushIfNotInTransaction();
}
 
 
void
BView::FillArc(BPoint center,float xRadius, float yRadius, float startAngle,
	float arcAngle, ::pattern pattern)
{
	FillArc(BRect(center.x - xRadius, center.y - yRadius, center.x + xRadius,
		center.y + yRadius), startAngle, arcAngle, pattern);
}
 
 
void
BView::FillArc(BPoint center,float xRadius, float yRadius, float startAngle,
	float arcAngle, const BGradient& gradient)
{
	FillArc(BRect(center.x - xRadius, center.y - yRadius, center.x + xRadius,
		center.y + yRadius), startAngle, arcAngle, gradient);
}
 
 
void
BView::FillArc(BRect rect, float startAngle, float arcAngle,
	::pattern pattern)
{
	if (fOwner == NULL)
		return;
 
	_CheckLockAndSwitchCurrent();
	_UpdatePattern(pattern);
 
	fOwner->fLink->StartMessage(AS_FILL_ARC);
	fOwner->fLink->Attach<BRect>(rect);
	fOwner->fLink->Attach<float>(startAngle);
	fOwner->fLink->Attach<float>(arcAngle);
 
	_FlushIfNotInTransaction();
}
 
 
void
BView::FillArc(BRect rect, float startAngle, float arcAngle,
	const BGradient& gradient)
{
	if (fOwner == NULL)
		return;
 
	_CheckLockAndSwitchCurrent();
 
	fOwner->fLink->StartMessage(AS_FILL_ARC_GRADIENT);
	fOwner->fLink->Attach<BRect>(rect);
	fOwner->fLink->Attach<float>(startAngle);
	fOwner->fLink->Attach<float>(arcAngle);
	fOwner->fLink->AttachGradient(gradient);
 
	_FlushIfNotInTransaction();
}
 
 
void
BView::StrokeBezier(BPoint* controlPoints, ::pattern pattern)
{
	if (fOwner == NULL)
		return;
 
	_CheckLockAndSwitchCurrent();
	_UpdatePattern(pattern);
 
	fOwner->fLink->StartMessage(AS_STROKE_BEZIER);
	fOwner->fLink->Attach<BPoint>(controlPoints[0]);
	fOwner->fLink->Attach<BPoint>(controlPoints[1]);
	fOwner->fLink->Attach<BPoint>(controlPoints[2]);
	fOwner->fLink->Attach<BPoint>(controlPoints[3]);
 
	_FlushIfNotInTransaction();
}
 
 
void
BView::FillBezier(BPoint* controlPoints, ::pattern pattern)
{
	if (fOwner == NULL)
		return;
 
	_CheckLockAndSwitchCurrent();
	_UpdatePattern(pattern);
 
	fOwner->fLink->StartMessage(AS_FILL_BEZIER);
	fOwner->fLink->Attach<BPoint>(controlPoints[0]);
	fOwner->fLink->Attach<BPoint>(controlPoints[1]);
	fOwner->fLink->Attach<BPoint>(controlPoints[2]);
	fOwner->fLink->Attach<BPoint>(controlPoints[3]);
 
	_FlushIfNotInTransaction();
}
 
 
void
BView::FillBezier(BPoint* controlPoints, const BGradient& gradient)
{
	if (fOwner == NULL)
		return;
 
	_CheckLockAndSwitchCurrent();
 
	fOwner->fLink->StartMessage(AS_FILL_BEZIER_GRADIENT);
	fOwner->fLink->Attach<BPoint>(controlPoints[0]);
	fOwner->fLink->Attach<BPoint>(controlPoints[1]);
	fOwner->fLink->Attach<BPoint>(controlPoints[2]);
	fOwner->fLink->Attach<BPoint>(controlPoints[3]);
	fOwner->fLink->AttachGradient(gradient);
 
	_FlushIfNotInTransaction();
}
 
 
void
BView::StrokePolygon(const BPolygon* polygon, bool closed, ::pattern pattern)
{
	if (polygon == NULL)
		return;
 
	StrokePolygon(polygon->fPoints, polygon->fCount, polygon->Frame(), closed,
		pattern);
}
 
 
void
BView::StrokePolygon(const BPoint* pointArray, int32 numPoints, bool closed,
	::pattern pattern)
{
	BPolygon polygon(pointArray, numPoints);
 
	StrokePolygon(polygon.fPoints, polygon.fCount, polygon.Frame(), closed,
		pattern);
}
 
 
void
BView::StrokePolygon(const BPoint* pointArray, int32 numPoints, BRect bounds,
	bool closed, ::pattern pattern)
{
	if (pointArray == NULL
		|| numPoints <= 1
		|| fOwner == NULL)
		return;
 
	_CheckLockAndSwitchCurrent();
	_UpdatePattern(pattern);
 
	BPolygon polygon(pointArray, numPoints);
	polygon.MapTo(polygon.Frame(), bounds);
 
	if (fOwner->fLink->StartMessage(AS_STROKE_POLYGON,
			polygon.fCount * sizeof(BPoint) + sizeof(BRect) + sizeof(bool)
				+ sizeof(int32)) == B_OK) {
		fOwner->fLink->Attach<BRect>(polygon.Frame());
		fOwner->fLink->Attach<bool>(closed);
		fOwner->fLink->Attach<int32>(polygon.fCount);
		fOwner->fLink->Attach(polygon.fPoints, polygon.fCount * sizeof(BPoint));
 
		_FlushIfNotInTransaction();
	} else {
		fprintf(stderr, "ERROR: Can't send polygon to app_server!\n");
	}
}
 
 
void
BView::FillPolygon(const BPolygon* polygon, ::pattern pattern)
{
	if (polygon == NULL
		|| polygon->fCount <= 2
		|| fOwner == NULL)
		return;
 
	_CheckLockAndSwitchCurrent();
	_UpdatePattern(pattern);
 
	if (fOwner->fLink->StartMessage(AS_FILL_POLYGON,
			polygon->fCount * sizeof(BPoint) + sizeof(BRect) + sizeof(int32))
				== B_OK) {
		fOwner->fLink->Attach<BRect>(polygon->Frame());
		fOwner->fLink->Attach<int32>(polygon->fCount);
		fOwner->fLink->Attach(polygon->fPoints,
			polygon->fCount * sizeof(BPoint));
 
		_FlushIfNotInTransaction();
	} else {
		fprintf(stderr, "ERROR: Can't send polygon to app_server!\n");
	}
}
 
 
void
BView::FillPolygon(const BPolygon* polygon, const BGradient& gradient)
{
	if (polygon == NULL
		|| polygon->fCount <= 2
		|| fOwner == NULL)
		return;
 
	_CheckLockAndSwitchCurrent();
 
	if (fOwner->fLink->StartMessage(AS_FILL_POLYGON_GRADIENT,
			polygon->fCount * sizeof(BPoint) + sizeof(BRect) + sizeof(int32))
				== B_OK) {
		fOwner->fLink->Attach<BRect>(polygon->Frame());
		fOwner->fLink->Attach<int32>(polygon->fCount);
		fOwner->fLink->Attach(polygon->fPoints,
			polygon->fCount * sizeof(BPoint));
		fOwner->fLink->AttachGradient(gradient);
 
		_FlushIfNotInTransaction();
	} else {
		fprintf(stderr, "ERROR: Can't send polygon to app_server!\n");
	}
}
 
 
void
BView::FillPolygon(const BPoint* pointArray, int32 numPoints, ::pattern pattern)
{
	if (pointArray == NULL)
		return;
 
	BPolygon polygon(pointArray, numPoints);
	FillPolygon(&polygon, pattern);
}
 
 
void
BView::FillPolygon(const BPoint* pointArray, int32 numPoints,
	const BGradient& gradient)
{
	if (pointArray == NULL)
		return;
 
	BPolygon polygon(pointArray, numPoints);
	FillPolygon(&polygon, gradient);
}
 
 
void
BView::FillPolygon(const BPoint* pointArray, int32 numPoints, BRect bounds,
	::pattern pattern)
{
	if (pointArray == NULL)
		return;
 
	BPolygon polygon(pointArray, numPoints);
 
	polygon.MapTo(polygon.Frame(), bounds);
	FillPolygon(&polygon, pattern);
}
 
 
void
BView::FillPolygon(const BPoint* pointArray, int32 numPoints, BRect bounds,
	const BGradient& gradient)
{
	if (pointArray == NULL)
		return;
 
	BPolygon polygon(pointArray, numPoints);
 
	polygon.MapTo(polygon.Frame(), bounds);
	FillPolygon(&polygon, gradient);
}
 
 
void
BView::StrokeRect(BRect rect, ::pattern pattern)
{
	if (fOwner == NULL)
		return;
 
	_CheckLockAndSwitchCurrent();
	_UpdatePattern(pattern);
 
	fOwner->fLink->StartMessage(AS_STROKE_RECT);
	fOwner->fLink->Attach<BRect>(rect);
 
	_FlushIfNotInTransaction();
}
 
 
void
BView::FillRect(BRect rect, ::pattern pattern)
{
	if (fOwner == NULL)
		return;
 
	// NOTE: ensuring compatibility with R5,
	// invalid rects are not filled, they are stroked though!
	if (!rect.IsValid())
		return;
 
	_CheckLockAndSwitchCurrent();
	_UpdatePattern(pattern);
 
	fOwner->fLink->StartMessage(AS_FILL_RECT);
	fOwner->fLink->Attach<BRect>(rect);
 
	_FlushIfNotInTransaction();
}
 
 
void
BView::FillRect(BRect rect, const BGradient& gradient)
{
	if (fOwner == NULL)
		return;
 
	// NOTE: ensuring compatibility with R5,
	// invalid rects are not filled, they are stroked though!
	if (!rect.IsValid())
		return;
 
	_CheckLockAndSwitchCurrent();
 
	fOwner->fLink->StartMessage(AS_FILL_RECT_GRADIENT);
	fOwner->fLink->Attach<BRect>(rect);
	fOwner->fLink->AttachGradient(gradient);
 
	_FlushIfNotInTransaction();
}
 
 
void
BView::StrokeRoundRect(BRect rect, float xRadius, float yRadius,
	::pattern pattern)
{
	if (fOwner == NULL)
		return;
 
	_CheckLockAndSwitchCurrent();
	_UpdatePattern(pattern);
 
	fOwner->fLink->StartMessage(AS_STROKE_ROUNDRECT);
	fOwner->fLink->Attach<BRect>(rect);
	fOwner->fLink->Attach<float>(xRadius);
	fOwner->fLink->Attach<float>(yRadius);
 
	_FlushIfNotInTransaction();
}
 
 
void
BView::FillRoundRect(BRect rect, float xRadius, float yRadius,
	::pattern pattern)
{
	if (fOwner == NULL)
		return;
 
	_CheckLockAndSwitchCurrent();
 
	_UpdatePattern(pattern);
 
	fOwner->fLink->StartMessage(AS_FILL_ROUNDRECT);
	fOwner->fLink->Attach<BRect>(rect);
	fOwner->fLink->Attach<float>(xRadius);
	fOwner->fLink->Attach<float>(yRadius);
 
	_FlushIfNotInTransaction();
}
 
 
void
BView::FillRoundRect(BRect rect, float xRadius, float yRadius,
	const BGradient& gradient)
{
	if (fOwner == NULL)
		return;
 
	_CheckLockAndSwitchCurrent();
 
	fOwner->fLink->StartMessage(AS_FILL_ROUNDRECT_GRADIENT);
	fOwner->fLink->Attach<BRect>(rect);
	fOwner->fLink->Attach<float>(xRadius);
	fOwner->fLink->Attach<float>(yRadius);
	fOwner->fLink->AttachGradient(gradient);
 
	_FlushIfNotInTransaction();
}
 
 
void
BView::FillRegion(BRegion* region, ::pattern pattern)
{
	if (region == NULL || fOwner == NULL)
		return;
 
	_CheckLockAndSwitchCurrent();
 
	_UpdatePattern(pattern);
 
	fOwner->fLink->StartMessage(AS_FILL_REGION);
	fOwner->fLink->AttachRegion(*region);
 
	_FlushIfNotInTransaction();
}
 
 
void
BView::FillRegion(BRegion* region, const BGradient& gradient)
{
	if (region == NULL || fOwner == NULL)
		return;
 
	_CheckLockAndSwitchCurrent();
 
	fOwner->fLink->StartMessage(AS_FILL_REGION_GRADIENT);
	fOwner->fLink->AttachRegion(*region);
	fOwner->fLink->AttachGradient(gradient);
 
	_FlushIfNotInTransaction();
}
 
 
void
BView::StrokeTriangle(BPoint point1, BPoint point2, BPoint point3, BRect bounds,
	::pattern pattern)
{
	if (fOwner == NULL)
		return;
 
	_CheckLockAndSwitchCurrent();
 
	_UpdatePattern(pattern);
 
	fOwner->fLink->StartMessage(AS_STROKE_TRIANGLE);
	fOwner->fLink->Attach<BPoint>(point1);
	fOwner->fLink->Attach<BPoint>(point2);
	fOwner->fLink->Attach<BPoint>(point3);
	fOwner->fLink->Attach<BRect>(bounds);
 
	_FlushIfNotInTransaction();
}
 
 
void
BView::StrokeTriangle(BPoint point1, BPoint point2, BPoint point3,
	::pattern pattern)
{
	if (fOwner) {
		// we construct the smallest rectangle that contains the 3 points
		// for the 1st point
		BRect bounds(point1, point1);
 
		// for the 2nd point
		if (point2.x < bounds.left)
			bounds.left = point2.x;
 
		if (point2.y < bounds.top)
			bounds.top = point2.y;
 
		if (point2.x > bounds.right)
			bounds.right = point2.x;
 
		if (point2.y > bounds.bottom)
			bounds.bottom = point2.y;
 
		// for the 3rd point
		if (point3.x < bounds.left)
			bounds.left = point3.x;
 
		if (point3.y < bounds.top)
			bounds.top = point3.y;
 
		if (point3.x > bounds.right)
			bounds.right = point3.x;
 
		if (point3.y > bounds.bottom)
			bounds.bottom = point3.y;
 
		StrokeTriangle(point1, point2, point3, bounds, pattern);
	}
}
 
 
void
BView::FillTriangle(BPoint point1, BPoint point2, BPoint point3,
	::pattern pattern)
{
	if (fOwner) {
		// we construct the smallest rectangle that contains the 3 points
		// for the 1st point
		BRect bounds(point1, point1);
 
		// for the 2nd point
		if (point2.x < bounds.left)
			bounds.left = point2.x;
 
		if (point2.y < bounds.top)
			bounds.top = point2.y;
 
		if (point2.x > bounds.right)
			bounds.right = point2.x;
 
		if (point2.y > bounds.bottom)
			bounds.bottom = point2.y;
 
		// for the 3rd point
		if (point3.x < bounds.left)
			bounds.left = point3.x;
 
		if (point3.y < bounds.top)
			bounds.top = point3.y;
 
		if (point3.x > bounds.right)
			bounds.right = point3.x;
 
		if (point3.y > bounds.bottom)
			bounds.bottom = point3.y;
 
		FillTriangle(point1, point2, point3, bounds, pattern);
	}
}
 
 
void
BView::FillTriangle(BPoint point1, BPoint point2, BPoint point3,
	const BGradient& gradient)
{
	if (fOwner) {
		// we construct the smallest rectangle that contains the 3 points
		// for the 1st point
		BRect bounds(point1, point1);
 
		// for the 2nd point
		if (point2.x < bounds.left)
			bounds.left = point2.x;
 
		if (point2.y < bounds.top)
			bounds.top = point2.y;
 
		if (point2.x > bounds.right)
			bounds.right = point2.x;
 
		if (point2.y > bounds.bottom)
			bounds.bottom = point2.y;
 
		// for the 3rd point
		if (point3.x < bounds.left)
			bounds.left = point3.x;
 
		if (point3.y < bounds.top)
			bounds.top = point3.y;
 
		if (point3.x > bounds.right)
			bounds.right = point3.x;
 
		if (point3.y > bounds.bottom)
			bounds.bottom = point3.y;
 
		FillTriangle(point1, point2, point3, bounds, gradient);
	}
}
 
 
void
BView::FillTriangle(BPoint point1, BPoint point2, BPoint point3,
	BRect bounds, ::pattern pattern)
{
	if (fOwner == NULL)
		return;
 
	_CheckLockAndSwitchCurrent();
	_UpdatePattern(pattern);
 
	fOwner->fLink->StartMessage(AS_FILL_TRIANGLE);
	fOwner->fLink->Attach<BPoint>(point1);
	fOwner->fLink->Attach<BPoint>(point2);
	fOwner->fLink->Attach<BPoint>(point3);
	fOwner->fLink->Attach<BRect>(bounds);
 
	_FlushIfNotInTransaction();
}
 
 
void
BView::FillTriangle(BPoint point1, BPoint point2, BPoint point3, BRect bounds,
	const BGradient& gradient)
{
	if (fOwner == NULL)
		return;
 
	_CheckLockAndSwitchCurrent();
	fOwner->fLink->StartMessage(AS_FILL_TRIANGLE_GRADIENT);
	fOwner->fLink->Attach<BPoint>(point1);
	fOwner->fLink->Attach<BPoint>(point2);
	fOwner->fLink->Attach<BPoint>(point3);
	fOwner->fLink->Attach<BRect>(bounds);
	fOwner->fLink->AttachGradient(gradient);
 
	_FlushIfNotInTransaction();
}
 
 
void
BView::StrokeLine(BPoint toPoint, ::pattern pattern)
{
	StrokeLine(PenLocation(), toPoint, pattern);
}
 
 
void
BView::StrokeLine(BPoint start, BPoint end, ::pattern pattern)
{
	if (fOwner == NULL)
		return;
 
	_CheckLockAndSwitchCurrent();
	_UpdatePattern(pattern);
 
	ViewStrokeLineInfo info;
	info.startPoint = start;
	info.endPoint = end;
 
	fOwner->fLink->StartMessage(AS_STROKE_LINE);
	fOwner->fLink->Attach<ViewStrokeLineInfo>(info);
 
	_FlushIfNotInTransaction();
 
	// this modifies our pen location, so we invalidate the flag.
	fState->valid_flags &= ~B_VIEW_PEN_LOCATION_BIT;
}
 
 
void
BView::StrokeShape(BShape* shape, ::pattern pattern)
{
	if (shape == NULL || fOwner == NULL)
		return;
 
	shape_data* sd = (shape_data*)shape->fPrivateData;
	if (sd->opCount == 0 || sd->ptCount == 0)
		return;
 
	_CheckLockAndSwitchCurrent();
	_UpdatePattern(pattern);
 
	fOwner->fLink->StartMessage(AS_STROKE_SHAPE);
	fOwner->fLink->Attach<BRect>(shape->Bounds());
	fOwner->fLink->Attach<int32>(sd->opCount);
	fOwner->fLink->Attach<int32>(sd->ptCount);
	fOwner->fLink->Attach(sd->opList, sd->opCount * sizeof(uint32));
	fOwner->fLink->Attach(sd->ptList, sd->ptCount * sizeof(BPoint));
 
	_FlushIfNotInTransaction();
}
 
 
void
BView::FillShape(BShape* shape, ::pattern pattern)
{
	if (shape == NULL || fOwner == NULL)
		return;
 
	shape_data* sd = (shape_data*)(shape->fPrivateData);
	if (sd->opCount == 0 || sd->ptCount == 0)
		return;
 
	_CheckLockAndSwitchCurrent();
	_UpdatePattern(pattern);
 
	fOwner->fLink->StartMessage(AS_FILL_SHAPE);
	fOwner->fLink->Attach<BRect>(shape->Bounds());
	fOwner->fLink->Attach<int32>(sd->opCount);
	fOwner->fLink->Attach<int32>(sd->ptCount);
	fOwner->fLink->Attach(sd->opList, sd->opCount * sizeof(int32));
	fOwner->fLink->Attach(sd->ptList, sd->ptCount * sizeof(BPoint));
 
	_FlushIfNotInTransaction();
}
 
 
void
BView::FillShape(BShape* shape, const BGradient& gradient)
{
	if (shape == NULL || fOwner == NULL)
		return;
 
	shape_data* sd = (shape_data*)(shape->fPrivateData);
	if (sd->opCount == 0 || sd->ptCount == 0)
		return;
 
	_CheckLockAndSwitchCurrent();
 
	fOwner->fLink->StartMessage(AS_FILL_SHAPE_GRADIENT);
	fOwner->fLink->Attach<BRect>(shape->Bounds());
	fOwner->fLink->Attach<int32>(sd->opCount);
	fOwner->fLink->Attach<int32>(sd->ptCount);
	fOwner->fLink->Attach(sd->opList, sd->opCount * sizeof(int32));
	fOwner->fLink->Attach(sd->ptList, sd->ptCount * sizeof(BPoint));
	fOwner->fLink->AttachGradient(gradient);
 
	_FlushIfNotInTransaction();
}
 
 
void
BView::BeginLineArray(int32 count)
{
	if (fOwner == NULL)
		return;
 
	if (count <= 0)
		debugger("Calling BeginLineArray with a count <= 0");
 
	_CheckLock();
 
	if (fCommArray) {
		debugger("Can't nest BeginLineArray calls");
			// not fatal, but it helps during
			// development of your app and is in
			// line with R5...
		delete[] fCommArray->array;
		delete fCommArray;
	}
 
	// TODO: since this method cannot return failure, and further AddLine()
	//	calls with a NULL fCommArray would drop into the debugger anyway,
	//	we allow the possible std::bad_alloc exceptions here...
	fCommArray = new _array_data_;
	fCommArray->count = 0;
 
	// Make sure the fCommArray is initialized to reasonable values in cases of
	// bad_alloc. At least the exception can be caught and EndLineArray won't
	// crash.
	fCommArray->array = NULL;
	fCommArray->maxCount = 0;
 
	fCommArray->array = new ViewLineArrayInfo[count];
	fCommArray->maxCount = count;
}
 
 
void
BView::AddLine(BPoint start, BPoint end, rgb_color color)
{
	if (fOwner == NULL)
		return;
 
	if (!fCommArray)
		debugger("BeginLineArray must be called before using AddLine");
 
	_CheckLock();
 
	const uint32 &arrayCount = fCommArray->count;
	if (arrayCount < fCommArray->maxCount) {
		fCommArray->array[arrayCount].startPoint = start;
		fCommArray->array[arrayCount].endPoint = end;
		fCommArray->array[arrayCount].color = color;
 
		fCommArray->count++;
	}
}
 
 
void
BView::EndLineArray()
{
	if (fOwner == NULL)
		return;
 
	if (fCommArray == NULL)
		debugger("Can't call EndLineArray before BeginLineArray");
 
	_CheckLockAndSwitchCurrent();
 
	fOwner->fLink->StartMessage(AS_STROKE_LINEARRAY);
	fOwner->fLink->Attach<int32>(fCommArray->count);
	fOwner->fLink->Attach(fCommArray->array,
		fCommArray->count * sizeof(ViewLineArrayInfo));
 
	_FlushIfNotInTransaction();
 
	_RemoveCommArray();
}
 
 
void
BView::SetDiskMode(char* filename, long offset)
{
	// TODO: implement
	// One BeBook version has this to say about SetDiskMode():
	//
	// "Begins recording a picture to the file with the given filename
	// at the given offset. Subsequent drawing commands sent to the view
	// will be written to the file until EndPicture() is called. The
	// stored commands may be played from the file with DrawPicture()."
}
 
 
void
BView::BeginPicture(BPicture* picture)
{
	if (_CheckOwnerLockAndSwitchCurrent()
		&& picture && picture->fUsurped == NULL) {
		picture->Usurp(fCurrentPicture);
		fCurrentPicture = picture;
 
		fOwner->fLink->StartMessage(AS_VIEW_BEGIN_PICTURE);
	}
}
 
 
void
BView::AppendToPicture(BPicture* picture)
{
	_CheckLockAndSwitchCurrent();
 
	if (picture && picture->fUsurped == NULL) {
		int32 token = picture->Token();
 
		if (token == -1) {
			BeginPicture(picture);
		} else {
			picture->SetToken(-1);
			picture->Usurp(fCurrentPicture);
			fCurrentPicture = picture;
			fOwner->fLink->StartMessage(AS_VIEW_APPEND_TO_PICTURE);
			fOwner->fLink->Attach<int32>(token);
		}
	}
}
 
 
BPicture*
BView::EndPicture()
{
	if (_CheckOwnerLockAndSwitchCurrent() && fCurrentPicture) {
		int32 token;
 
		fOwner->fLink->StartMessage(AS_VIEW_END_PICTURE);
 
		int32 code;
		if (fOwner->fLink->FlushWithReply(code) == B_OK
			&& code == B_OK
			&& fOwner->fLink->Read<int32>(&token) == B_OK) {
			BPicture* picture = fCurrentPicture;
			fCurrentPicture = picture->StepDown();
			picture->SetToken(token);
 
			// TODO do this more efficient e.g. use a shared area and let the
			// client write into it
			picture->_Download();
			return picture;
		}
	}
 
	return NULL;
}
 
 
void
BView::SetViewBitmap(const BBitmap* bitmap, BRect srcRect, BRect dstRect,
	uint32 followFlags, uint32 options)
{
	_SetViewBitmap(bitmap, srcRect, dstRect, followFlags, options);
}
 
 
void
BView::SetViewBitmap(const BBitmap* bitmap, uint32 followFlags, uint32 options)
{
	BRect rect;
 	if (bitmap)
		rect = bitmap->Bounds();
 
 	rect.OffsetTo(B_ORIGIN);
 
	_SetViewBitmap(bitmap, rect, rect, followFlags, options);
}
 
 
void
BView::ClearViewBitmap()
{
	_SetViewBitmap(NULL, BRect(), BRect(), 0, 0);
}
 
 
status_t
BView::SetViewOverlay(const BBitmap* overlay, BRect srcRect, BRect dstRect,
	rgb_color* colorKey, uint32 followFlags, uint32 options)
{
	if (overlay == NULL || (overlay->fFlags & B_BITMAP_WILL_OVERLAY) == 0)
		return B_BAD_VALUE;
 
	status_t status = _SetViewBitmap(overlay, srcRect, dstRect, followFlags,
		options | AS_REQUEST_COLOR_KEY);
	if (status == B_OK) {
		// read the color that will be treated as transparent
		fOwner->fLink->Read<rgb_color>(colorKey);
	}
 
	return status;
}
 
 
status_t
BView::SetViewOverlay(const BBitmap* overlay, rgb_color* colorKey,
	uint32 followFlags, uint32 options)
{
	if (overlay == NULL)
		return B_BAD_VALUE;
 
	BRect rect = overlay->Bounds();
 	rect.OffsetTo(B_ORIGIN);
 
	return SetViewOverlay(overlay, rect, rect, colorKey, followFlags, options);
}
 
 
void
BView::ClearViewOverlay()
{
	_SetViewBitmap(NULL, BRect(), BRect(), 0, 0);
}
 
 
void
BView::CopyBits(BRect src, BRect dst)
{
	if (fOwner == NULL)
		return;
 
	if (!src.IsValid() || !dst.IsValid())
		return;
 
	_CheckLockAndSwitchCurrent();
 
	fOwner->fLink->StartMessage(AS_VIEW_COPY_BITS);
	fOwner->fLink->Attach<BRect>(src);
	fOwner->fLink->Attach<BRect>(dst);
 
	_FlushIfNotInTransaction();
}
 
 
void
BView::DrawPicture(const BPicture* picture)
{
	if (picture == NULL)
		return;
 
	DrawPictureAsync(picture, PenLocation());
	Sync();
}
 
 
void
BView::DrawPicture(const BPicture* picture, BPoint where)
{
	if (picture == NULL)
		return;
 
	DrawPictureAsync(picture, where);
	Sync();
}
 
 
void
BView::DrawPicture(const char* filename, long offset, BPoint where)
{
	if (!filename)
		return;
 
	DrawPictureAsync(filename, offset, where);
	Sync();
}
 
 
void
BView::DrawPictureAsync(const BPicture* picture)
{
	if (picture == NULL)
		return;
 
	DrawPictureAsync(picture, PenLocation());
}
 
 
void
BView::DrawPictureAsync(const BPicture* picture, BPoint where)
{
	if (picture == NULL)
		return;
 
	if (_CheckOwnerLockAndSwitchCurrent() && picture->Token() > 0) {
		fOwner->fLink->StartMessage(AS_VIEW_DRAW_PICTURE);
		fOwner->fLink->Attach<int32>(picture->Token());
		fOwner->fLink->Attach<BPoint>(where);
 
		_FlushIfNotInTransaction();
	}
}
 
 
void
BView::DrawPictureAsync(const char* filename, long offset, BPoint where)
{
	if (!filename)
		return;
 
	// TODO: Test
	BFile file(filename, B_READ_ONLY);
	if (file.InitCheck() < B_OK)
		return;
 
	file.Seek(offset, SEEK_SET);
 
	BPicture picture;
	if (picture.Unflatten(&file) < B_OK)
		return;
 
	DrawPictureAsync(&picture, where);
}
 
 
void
BView::BeginLayer(uint8 opacity)
{
	if (_CheckOwnerLockAndSwitchCurrent()) {
		fOwner->fLink->StartMessage(AS_VIEW_BEGIN_LAYER);
		fOwner->fLink->Attach<uint8>(opacity);
		_FlushIfNotInTransaction();
	}
}
 
 
void
BView::EndLayer()
{
	if (_CheckOwnerLockAndSwitchCurrent()) {
		fOwner->fLink->StartMessage(AS_VIEW_END_LAYER);
		_FlushIfNotInTransaction();
	}
}
 
 
void
BView::Invalidate(BRect invalRect)
{
	if (fOwner == NULL)
		return;
 
	// NOTE: This rounding of the invalid rect is to stay compatible with BeOS.
	// On the server side, the invalid rect will be converted to a BRegion,
	// which rounds in a different manner, so that it really includes the
	// fractional coordinates of a BRect (ie ceilf(rect.right) &
	// ceilf(rect.bottom)), which is also what BeOS does. So we have to do the
	// different rounding here to stay compatible in both ways.
	invalRect.left = (int)invalRect.left;
	invalRect.top = (int)invalRect.top;
	invalRect.right = (int)invalRect.right;
	invalRect.bottom = (int)invalRect.bottom;
	if (!invalRect.IsValid())
		return;
 
	_CheckLockAndSwitchCurrent();
 
	fOwner->fLink->StartMessage(AS_VIEW_INVALIDATE_RECT);
	fOwner->fLink->Attach<BRect>(invalRect);
 
// TODO: determine why this check isn't working correctly.
#if 0
	if (!fOwner->fUpdateRequested) {
		fOwner->fLink->Flush();
		fOwner->fUpdateRequested = true;
	}
#else
	fOwner->fLink->Flush();
#endif
}
 
 
void
BView::Invalidate(const BRegion* region)
{
	if (region == NULL || fOwner == NULL)
		return;
 
	_CheckLockAndSwitchCurrent();
 
	fOwner->fLink->StartMessage(AS_VIEW_INVALIDATE_REGION);
	fOwner->fLink->AttachRegion(*region);
 
// TODO: See above.
#if 0
	if (!fOwner->fUpdateRequested) {
		fOwner->fLink->Flush();
		fOwner->fUpdateRequested = true;
	}
#else
	fOwner->fLink->Flush();
#endif
}
 
 
void
BView::Invalidate()
{
	Invalidate(Bounds());
}
 
 
void
BView::DelayedInvalidate(bigtime_t delay)
{
	DelayedInvalidate(delay, Bounds());
}
 
 
void
BView::DelayedInvalidate(bigtime_t delay, BRect invalRect)
{
	if (fOwner == NULL)
		return;
 
	invalRect.left = (int)invalRect.left;
	invalRect.top = (int)invalRect.top;
	invalRect.right = (int)invalRect.right;
	invalRect.bottom = (int)invalRect.bottom;
	if (!invalRect.IsValid())
		return;
 
	_CheckLockAndSwitchCurrent();
 
	fOwner->fLink->StartMessage(AS_VIEW_DELAYED_INVALIDATE_RECT);
	fOwner->fLink->Attach<bigtime_t>(system_time() + delay);
	fOwner->fLink->Attach<BRect>(invalRect);
	fOwner->fLink->Flush();
}
 
 
void
BView::InvertRect(BRect rect)
{
	if (fOwner) {
		_CheckLockAndSwitchCurrent();
 
		fOwner->fLink->StartMessage(AS_VIEW_INVERT_RECT);
		fOwner->fLink->Attach<BRect>(rect);
 
		_FlushIfNotInTransaction();
	}
}
 
 
//	#pragma mark - View Hierarchy Functions
 
 
void
BView::AddChild(BView* child, BView* before)
{
	STRACE(("BView(%s)::AddChild(child '%s', before '%s')\n",
		this->Name(),
		child != NULL && child->Name() ? child->Name() : "NULL",
		before != NULL && before->Name() ? before->Name() : "NULL"));
 
	if (!_AddChild(child, before))
		return;
 
	if (fLayoutData->fLayout)
		fLayoutData->fLayout->AddView(child);
}
 
 
bool
BView::AddChild(BLayoutItem* child)
{
	if (!fLayoutData->fLayout)
		return false;
	return fLayoutData->fLayout->AddItem(child);
}
 
 
bool
BView::_AddChild(BView* child, BView* before)
{
	if (!child)
		return false;
 
	if (child->fParent != NULL) {
		debugger("AddChild failed - the view already has a parent.");
		return false;
	}
 
	if (child == this) {
		debugger("AddChild failed - cannot add a view to itself.");
		return false;
	}
 
	bool lockedOwner = false;
	if (fOwner && !fOwner->IsLocked()) {
		fOwner->Lock();
		lockedOwner = true;
	}
 
	if (!_AddChildToList(child, before)) {
		debugger("AddChild failed!");
		if (lockedOwner)
			fOwner->Unlock();
		return false;
	}
 
	if (fOwner) {
		_CheckLockAndSwitchCurrent();
 
		child->_SetOwner(fOwner);
		child->_CreateSelf();
		child->_Attach();
 
		if (lockedOwner)
			fOwner->Unlock();
	}
 
	InvalidateLayout();
 
	return true;
}
 
 
bool
BView::RemoveChild(BView* child)
{
	STRACE(("BView(%s)::RemoveChild(%s)\n", Name(), child->Name()));
 
	if (!child)
		return false;
 
	if (child->fParent != this)
		return false;
 
	return child->RemoveSelf();
}
 
 
int32
BView::CountChildren() const
{
	_CheckLock();
 
	uint32 count = 0;
	BView* child = fFirstChild;
 
	while (child != NULL) {
		count++;
		child = child->fNextSibling;
	}
 
	return count;
}
 
 
BView*
BView::ChildAt(int32 index) const
{
	_CheckLock();
 
	BView* child = fFirstChild;
	while (child != NULL && index-- > 0) {
		child = child->fNextSibling;
	}
 
	return child;
}
 
 
BView*
BView::NextSibling() const
{
	return fNextSibling;
}
 
 
BView*
BView::PreviousSibling() const
{
	return fPreviousSibling;
}
 
 
bool
BView::RemoveSelf()
{
	_RemoveLayoutItemsFromLayout(false);
 
	return _RemoveSelf();
}
 
 
bool
BView::_RemoveSelf()
{
	STRACE(("BView(%s)::_RemoveSelf()\n", Name()));
 
	// Remove this child from its parent
 
	BWindow* owner = fOwner;
	_CheckLock();
 
	if (owner != NULL) {
		_UpdateStateForRemove();
		_Detach();
	}
 
	BView* parent = fParent;
	if (!parent || !parent->_RemoveChildFromList(this))
		return false;
 
	if (owner != NULL && !fTopLevelView) {
		// the top level view is deleted by the app_server automatically
		owner->fLink->StartMessage(AS_VIEW_DELETE);
		owner->fLink->Attach<int32>(_get_object_token_(this));
	}
 
	parent->InvalidateLayout();
 
	STRACE(("DONE: BView(%s)::_RemoveSelf()\n", Name()));
 
	return true;
}
 
 
void
BView::_RemoveLayoutItemsFromLayout(bool deleteItems)
{
	if (fParent == NULL || fParent->fLayoutData->fLayout == NULL)
		return;
 
	int32 index = fLayoutData->fLayoutItems.CountItems();
	while (index-- > 0) {
		BLayoutItem* item = fLayoutData->fLayoutItems.ItemAt(index);
		item->RemoveSelf();
			// Removes item from fLayoutItems list
		if (deleteItems)
			delete item;
	}
}
 
 
BView*
BView::Parent() const
{
	if (fParent && fParent->fTopLevelView)
		return NULL;
 
	return fParent;
}
 
 
BView*
BView::FindView(const char* name) const
{
	if (name == NULL)
		return NULL;
 
	if (Name() != NULL && !strcmp(Name(), name))
		return const_cast<BView*>(this);
 
	BView* child = fFirstChild;
	while (child != NULL) {
		BView* view = child->FindView(name);
		if (view != NULL)
			return view;
 
		child = child->fNextSibling;
	}
 
	return NULL;
}
 
 
void
BView::MoveBy(float deltaX, float deltaY)
{
	MoveTo(fParentOffset.x + roundf(deltaX), fParentOffset.y + roundf(deltaY));
}
 
 
void
BView::MoveTo(BPoint where)
{
	MoveTo(where.x, where.y);
}
 
 
void
BView::MoveTo(float x, float y)
{
	if (x == fParentOffset.x && y == fParentOffset.y)
		return;
 
	// BeBook says we should do this. And it makes sense.
	x = roundf(x);
	y = roundf(y);
 
	if (fOwner) {
		_CheckLockAndSwitchCurrent();
		fOwner->fLink->StartMessage(AS_VIEW_MOVE_TO);
		fOwner->fLink->Attach<float>(x);
		fOwner->fLink->Attach<float>(y);
 
//		fState->valid_flags |= B_VIEW_FRAME_BIT;
 
		_FlushIfNotInTransaction();
	}
 
	_MoveTo((int32)x, (int32)y);
}
 
 
void
BView::ResizeBy(float deltaWidth, float deltaHeight)
{
	// BeBook says we should do this. And it makes sense.
	deltaWidth = roundf(deltaWidth);
	deltaHeight = roundf(deltaHeight);
 
	if (deltaWidth == 0 && deltaHeight == 0)
		return;
 
	if (fOwner) {
		_CheckLockAndSwitchCurrent();
		fOwner->fLink->StartMessage(AS_VIEW_RESIZE_TO);
 
		fOwner->fLink->Attach<float>(fBounds.Width() + deltaWidth);
		fOwner->fLink->Attach<float>(fBounds.Height() + deltaHeight);
 
//		fState->valid_flags |= B_VIEW_FRAME_BIT;
 
		_FlushIfNotInTransaction();
	}
 
	_ResizeBy((int32)deltaWidth, (int32)deltaHeight);
}
 
 
void
BView::ResizeTo(float width, float height)
{
	ResizeBy(width - fBounds.Width(), height - fBounds.Height());
}
 
 
void
BView::ResizeTo(BSize size)
{
	ResizeBy(size.width - fBounds.Width(), size.height - fBounds.Height());
}
 
 
//	#pragma mark - Inherited Methods (from BHandler)
 
 
status_t
BView::GetSupportedSuites(BMessage* data)
{
	if (data == NULL)
		return B_BAD_VALUE;
 
	status_t status = data->AddString("suites", "suite/vnd.Be-view");
	BPropertyInfo propertyInfo(sViewPropInfo);
	if (status == B_OK)
		status = data->AddFlat("messages", &propertyInfo);
	if (status == B_OK)
		return BHandler::GetSupportedSuites(data);
	return status;
}
 
 
BHandler*
BView::ResolveSpecifier(BMessage* message, int32 index, BMessage* specifier,
	int32 what, const char* property)
{
	if (message->what == B_WINDOW_MOVE_BY
		|| message->what == B_WINDOW_MOVE_TO) {
		return this;
	}
 
	BPropertyInfo propertyInfo(sViewPropInfo);
	status_t err = B_BAD_SCRIPT_SYNTAX;
	BMessage replyMsg(B_REPLY);
 
	switch (propertyInfo.FindMatch(message, index, specifier, what, property)) {
		case 0:
		case 1:
		case 3:
			return this;
 
		case 2:
			if (fShelf) {
				message->PopSpecifier();
				return fShelf;
			}
 
			err = B_NAME_NOT_FOUND;
			replyMsg.AddString("message", "This window doesn't have a shelf");
			break;
 
		case 4:
		{
			if (!fFirstChild) {
				err = B_NAME_NOT_FOUND;
				replyMsg.AddString("message", "This window doesn't have "
					"children.");
				break;
			}
			BView* child = NULL;
			switch (what) {
				case B_INDEX_SPECIFIER:
				{
					int32 index;
					err = specifier->FindInt32("index", &index);
					if (err == B_OK)
						child = ChildAt(index);
					break;
				}
				case B_REVERSE_INDEX_SPECIFIER:
				{
					int32 rindex;
					err = specifier->FindInt32("index", &rindex);
					if (err == B_OK)
						child = ChildAt(CountChildren() - rindex);
					break;
				}
				case B_NAME_SPECIFIER:
				{
					const char* name;
					err = specifier->FindString("name", &name);
					if (err == B_OK)
						child = FindView(name);
					break;
				}
			}
 
			if (child != NULL) {
				message->PopSpecifier();
				return child;
			}
 
			if (err == B_OK)
				err = B_BAD_INDEX;
 
			replyMsg.AddString("message",
				"Cannot find view at/with specified index/name.");
			break;
		}
 
		default:
			return BHandler::ResolveSpecifier(message, index, specifier, what,
				property);
	}
 
	if (err < B_OK) {
		replyMsg.what = B_MESSAGE_NOT_UNDERSTOOD;
 
		if (err == B_BAD_SCRIPT_SYNTAX)
			replyMsg.AddString("message", "Didn't understand the specifier(s)");
		else
			replyMsg.AddString("message", strerror(err));
	}
 
	replyMsg.AddInt32("error", err);
	message->SendReply(&replyMsg);
	return NULL;
}
 
 
void
BView::MessageReceived(BMessage* message)
{
	if (!message->HasSpecifiers()) {
		switch (message->what) {
			case B_VIEW_RESIZED:
				FrameResized(message->GetInt32("width", 0),
					message->GetInt32("height", 0));
				break;
 
			case B_VIEW_MOVED:
				FrameMoved(fParentOffset);
				break;
 
			case B_MOUSE_IDLE:
			{
				BPoint where;
				if (message->FindPoint("be:view_where", &where) != B_OK)
					break;
 
				BToolTip* tip;
				if (GetToolTipAt(where, &tip))
					ShowToolTip(tip);
				else
					BHandler::MessageReceived(message);
				break;
			}
 
			case B_MOUSE_WHEEL_CHANGED:
			{
				BScrollBar* horizontal = ScrollBar(B_HORIZONTAL);
				BScrollBar* vertical = ScrollBar(B_VERTICAL);
				if (horizontal == NULL && vertical == NULL) {
					// Pass the message to the next handler
					BHandler::MessageReceived(message);
					break;
				}
 
				float deltaX = 0.0f;
				float deltaY = 0.0f;
 
				if (horizontal != NULL)
					message->FindFloat("be:wheel_delta_x", &deltaX);
 
				if (vertical != NULL)
					message->FindFloat("be:wheel_delta_y", &deltaY);
 
				if (deltaX == 0.0f && deltaY == 0.0f)
					break;
 
				if ((modifiers() & B_CONTROL_KEY) != 0)
					std::swap(horizontal, vertical);
 
				if (horizontal != NULL && deltaX != 0.0f)
					ScrollWithMouseWheelDelta(horizontal, deltaX);
 
				if (vertical != NULL && deltaY != 0.0f)
					ScrollWithMouseWheelDelta(vertical, deltaY);
 
				break;
			}
 
			// prevent message repeats
			case B_COLORS_UPDATED:
			case B_FONTS_UPDATED:
				break;
 
			case B_SCREEN_CHANGED:
			{
				// propegate message to child views
				int32 childCount = CountChildren();
				for (int32 i = 0; i < childCount; i++) {
					BView* view = ChildAt(i);
					if (view != NULL)
						view->MessageReceived(message);
				}
				break;
			}
 
			default:
				BHandler::MessageReceived(message);
				break;
		}
 
		return;
	}
 
	// Scripting message
 
	BMessage replyMsg(B_REPLY);
	status_t err = B_BAD_SCRIPT_SYNTAX;
	int32 index;
	BMessage specifier;
	int32 what;
	const char* property;
 
	if (message->GetCurrentSpecifier(&index, &specifier, &what, &property)
			!= B_OK) {
		return BHandler::MessageReceived(message);
	}
 
	BPropertyInfo propertyInfo(sViewPropInfo);
	switch (propertyInfo.FindMatch(message, index, &specifier, what,
			property)) {
		case 0:
			if (message->what == B_GET_PROPERTY) {
				err = replyMsg.AddRect("result", Frame());
			} else if (message->what == B_SET_PROPERTY) {
				BRect newFrame;
				err = message->FindRect("data", &newFrame);
				if (err == B_OK) {
					MoveTo(newFrame.LeftTop());
					ResizeTo(newFrame.Width(), newFrame.Height());
				}
			}
			break;
		case 1:
			if (message->what == B_GET_PROPERTY) {
				err = replyMsg.AddBool("result", IsHidden());
			} else if (message->what == B_SET_PROPERTY) {
				bool newHiddenState;
				err = message->FindBool("data", &newHiddenState);
				if (err == B_OK) {
					if (newHiddenState == true)
						Hide();
					else
						Show();
				}
			}
			break;
		case 3:
			err = replyMsg.AddInt32("result", CountChildren());
			break;
		default:
			return BHandler::MessageReceived(message);
	}
 
	if (err != B_OK) {
		replyMsg.what = B_MESSAGE_NOT_UNDERSTOOD;
 
		if (err == B_BAD_SCRIPT_SYNTAX)
			replyMsg.AddString("message", "Didn't understand the specifier(s)");
		else
			replyMsg.AddString("message", strerror(err));
 
		replyMsg.AddInt32("error", err);
	}
 
	message->SendReply(&replyMsg);
}
 
 
status_t
BView::Perform(perform_code code, void* _data)
{
	switch (code) {
		case PERFORM_CODE_MIN_SIZE:
			((perform_data_min_size*)_data)->return_value
				= BView::MinSize();
			return B_OK;
		case PERFORM_CODE_MAX_SIZE:
			((perform_data_max_size*)_data)->return_value
				= BView::MaxSize();
			return B_OK;
		case PERFORM_CODE_PREFERRED_SIZE:
			((perform_data_preferred_size*)_data)->return_value
				= BView::PreferredSize();
			return B_OK;
		case PERFORM_CODE_LAYOUT_ALIGNMENT:
			((perform_data_layout_alignment*)_data)->return_value
				= BView::LayoutAlignment();
			return B_OK;
		case PERFORM_CODE_HAS_HEIGHT_FOR_WIDTH:
			((perform_data_has_height_for_width*)_data)->return_value
				= BView::HasHeightForWidth();
			return B_OK;
		case PERFORM_CODE_GET_HEIGHT_FOR_WIDTH:
		{
			perform_data_get_height_for_width* data
				= (perform_data_get_height_for_width*)_data;
			BView::GetHeightForWidth(data->width, &data->min, &data->max,
				&data->preferred);
			return B_OK;
		}
		case PERFORM_CODE_SET_LAYOUT:
		{
			perform_data_set_layout* data = (perform_data_set_layout*)_data;
			BView::SetLayout(data->layout);
			return B_OK;
		}
		case PERFORM_CODE_LAYOUT_INVALIDATED:
		{
			perform_data_layout_invalidated* data
				= (perform_data_layout_invalidated*)_data;
			BView::LayoutInvalidated(data->descendants);
			return B_OK;
		}
		case PERFORM_CODE_DO_LAYOUT:
		{
			BView::DoLayout();
			return B_OK;
		}
		case PERFORM_CODE_LAYOUT_CHANGED:
		{
			BView::LayoutChanged();
			return B_OK;
		}
		case PERFORM_CODE_GET_TOOL_TIP_AT:
		{
			perform_data_get_tool_tip_at* data
				= (perform_data_get_tool_tip_at*)_data;
			data->return_value
				= BView::GetToolTipAt(data->point, data->tool_tip);
			return B_OK;
		}
		case PERFORM_CODE_ALL_UNARCHIVED:
		{
			perform_data_all_unarchived* data =
				(perform_data_all_unarchived*)_data;
 
			data->return_value = BView::AllUnarchived(data->archive);
			return B_OK;
		}
		case PERFORM_CODE_ALL_ARCHIVED:
		{
			perform_data_all_archived* data =
				(perform_data_all_archived*)_data;
 
			data->return_value = BView::AllArchived(data->archive);
			return B_OK;
		}
	}
 
	return BHandler::Perform(code, _data);
}
 
 
// #pragma mark - Layout Functions
 
 
BSize
BView::MinSize()
{
	// TODO: make sure this works correctly when some methods are overridden
	float width, height;
	GetPreferredSize(&width, &height);
 
	return BLayoutUtils::ComposeSize(fLayoutData->fMinSize,
		(fLayoutData->fLayout ? fLayoutData->fLayout->MinSize()
			: BSize(width, height)));
}
 
 
BSize
BView::MaxSize()
{
	return BLayoutUtils::ComposeSize(fLayoutData->fMaxSize,
		(fLayoutData->fLayout ? fLayoutData->fLayout->MaxSize()
			: BSize(B_SIZE_UNLIMITED, B_SIZE_UNLIMITED)));
}
 
 
BSize
BView::PreferredSize()
{
	// TODO: make sure this works correctly when some methods are overridden
	float width, height;
	GetPreferredSize(&width, &height);
 
	return BLayoutUtils::ComposeSize(fLayoutData->fPreferredSize,
		(fLayoutData->fLayout ? fLayoutData->fLayout->PreferredSize()
			: BSize(width, height)));
}
 
 
BAlignment
BView::LayoutAlignment()
{
	return BLayoutUtils::ComposeAlignment(fLayoutData->fAlignment,
		(fLayoutData->fLayout ? fLayoutData->fLayout->Alignment()
			: BAlignment(B_ALIGN_HORIZONTAL_CENTER, B_ALIGN_VERTICAL_CENTER)));
}
 
 
void
BView::SetExplicitMinSize(BSize size)
{
	fLayoutData->fMinSize = size;
	InvalidateLayout();
}
 
 
void
BView::SetExplicitMaxSize(BSize size)
{
	fLayoutData->fMaxSize = size;
	InvalidateLayout();
}
 
 
void
BView::SetExplicitPreferredSize(BSize size)
{
	fLayoutData->fPreferredSize = size;
	InvalidateLayout();
}
 
 
void
BView::SetExplicitSize(BSize size)
{
	fLayoutData->fMinSize = size;
	fLayoutData->fMaxSize = size;
	fLayoutData->fPreferredSize = size;
	InvalidateLayout();
}
 
 
void
BView::SetExplicitAlignment(BAlignment alignment)
{
	fLayoutData->fAlignment = alignment;
	InvalidateLayout();
}
 
 
BSize
BView::ExplicitMinSize() const
{
	return fLayoutData->fMinSize;
}
 
 
BSize
BView::ExplicitMaxSize() const
{
	return fLayoutData->fMaxSize;
}
 
 
BSize
BView::ExplicitPreferredSize() const
{
	return fLayoutData->fPreferredSize;
}
 
 
BAlignment
BView::ExplicitAlignment() const
{
	return fLayoutData->fAlignment;
}
 
 
bool
BView::HasHeightForWidth()
{
	return (fLayoutData->fLayout
		? fLayoutData->fLayout->HasHeightForWidth() : false);
}
 
 
void
BView::GetHeightForWidth(float width, float* min, float* max, float* preferred)
{
	if (fLayoutData->fLayout)
		fLayoutData->fLayout->GetHeightForWidth(width, min, max, preferred);
}
 
 
void
BView::SetLayout(BLayout* layout)
{
	if (layout == fLayoutData->fLayout)
		return;
 
	if (layout && layout->Layout())
		debugger("BView::SetLayout() failed, layout is already in use.");
 
	fFlags |= B_SUPPORTS_LAYOUT;
 
	// unset and delete the old layout
	if (fLayoutData->fLayout) {
		fLayoutData->fLayout->RemoveSelf();
		fLayoutData->fLayout->SetOwner(NULL);
		delete fLayoutData->fLayout;
	}
 
	fLayoutData->fLayout = layout;
 
	if (fLayoutData->fLayout) {
		fLayoutData->fLayout->SetOwner(this);
 
		// add all children
		int count = CountChildren();
		for (int i = 0; i < count; i++)
			fLayoutData->fLayout->AddView(ChildAt(i));
	}
 
	InvalidateLayout();
}
 
 
BLayout*
BView::GetLayout() const
{
	return fLayoutData->fLayout;
}
 
 
void
BView::InvalidateLayout(bool descendants)
{
	// printf("BView(%p)::InvalidateLayout(%i), valid: %i, inProgress: %i\n",
	//	this, descendants, fLayoutData->fLayoutValid,
	//	fLayoutData->fLayoutInProgress);
 
	if (!fLayoutData->fMinMaxValid || fLayoutData->fLayoutInProgress
 			|| fLayoutData->fLayoutInvalidationDisabled > 0) {
		return;
	}
	fLayoutData->fLayoutValid = false;
	fLayoutData->fMinMaxValid = false;
	LayoutInvalidated(descendants);
 
	if (descendants) {
		for (BView* child = fFirstChild;
			child; child = child->fNextSibling) {
			child->InvalidateLayout(descendants);
		}
	}
 
	if (fLayoutData->fLayout)
		fLayoutData->fLayout->InvalidateLayout(descendants);
	else
		_InvalidateParentLayout();
 
	if (fTopLevelView
		&& fOwner != NULL)
		fOwner->PostMessage(B_LAYOUT_WINDOW);
}
 
 
void
BView::EnableLayoutInvalidation()
{
	if (fLayoutData->fLayoutInvalidationDisabled > 0)
		fLayoutData->fLayoutInvalidationDisabled--;
}
 
 
void
BView::DisableLayoutInvalidation()
{
	fLayoutData->fLayoutInvalidationDisabled++;
}
 
 
bool
BView::IsLayoutInvalidationDisabled()
{
	if (fLayoutData->fLayoutInvalidationDisabled > 0)
		return true;
	return false;
}
 
 
bool
BView::IsLayoutValid() const
{
	return fLayoutData->fLayoutValid;
}
 
 
void
BView::ResetLayoutInvalidation()
{
	fLayoutData->fMinMaxValid = true;
}
 
 
BLayoutContext*
BView::LayoutContext() const
{
	return fLayoutData->fLayoutContext;
}
 
 
void
BView::Layout(bool force)
{
	BLayoutContext context;
	_Layout(force, &context);
}
 
 
void
BView::Relayout()
{
	if (fLayoutData->fLayoutValid && !fLayoutData->fLayoutInProgress) {
		fLayoutData->fNeedsRelayout = true;
		if (fLayoutData->fLayout)
			fLayoutData->fLayout->RequireLayout();
 
		// Layout() is recursive, that is if the parent view is currently laid
		// out, we don't call layout() on this view, but wait for the parent's
		// Layout() to do that for us.
		if (!fParent || !fParent->fLayoutData->fLayoutInProgress)
			Layout(false);
	}
}
 
 
void
BView::LayoutInvalidated(bool descendants)
{
	// hook method
}
 
 
void
BView::DoLayout()
{
	if (fLayoutData->fLayout)
		fLayoutData->fLayout->_LayoutWithinContext(false, LayoutContext());
}
 
 
void
BView::SetToolTip(const char* text)
{
	if (text == NULL || text[0] == '\0') {
		SetToolTip((BToolTip*)NULL);
		return;
	}
 
	if (BTextToolTip* tip = dynamic_cast<BTextToolTip*>(fToolTip))
		tip->SetText(text);
	else
		SetToolTip(new BTextToolTip(text));
}
 
 
void
BView::SetToolTip(BToolTip* tip)
{
	if (fToolTip == tip)
		return;
	else if (tip == NULL)
		HideToolTip();
 
	if (fToolTip != NULL)
		fToolTip->ReleaseReference();
 
	fToolTip = tip;
 
	if (fToolTip != NULL)
		fToolTip->AcquireReference();
}
 
 
BToolTip*
BView::ToolTip() const
{
	return fToolTip;
}
 
 
void
BView::ShowToolTip(BToolTip* tip)
{
	if (tip == NULL)
		return;
 
	BPoint where;
	GetMouse(&where, NULL, false);
 
	BToolTipManager::Manager()->ShowTip(tip, ConvertToScreen(where), this);
}
 
 
void
BView::HideToolTip()
{
	BToolTipManager::Manager()->HideTip();
}
 
 
bool
BView::GetToolTipAt(BPoint point, BToolTip** _tip)
{
	if (fToolTip != NULL) {
		*_tip = fToolTip;
		return true;
	}
 
	*_tip = NULL;
	return false;
}
 
 
void
BView::LayoutChanged()
{
	// hook method
}
 
 
void
BView::_Layout(bool force, BLayoutContext* context)
{
//printf("%p->BView::_Layout(%d, %p)\n", this, force, context);
//printf("  fNeedsRelayout: %d, fLayoutValid: %d, fLayoutInProgress: %d\n",
//fLayoutData->fNeedsRelayout, fLayoutData->fLayoutValid,
//fLayoutData->fLayoutInProgress);
	if (fLayoutData->fNeedsRelayout || !fLayoutData->fLayoutValid || force) {
		fLayoutData->fLayoutValid = false;
 
		if (fLayoutData->fLayoutInProgress)
			return;
 
		BLayoutContext* oldContext = fLayoutData->fLayoutContext;
		fLayoutData->fLayoutContext = context;
 
		fLayoutData->fLayoutInProgress = true;
		DoLayout();
		fLayoutData->fLayoutInProgress = false;
 
		fLayoutData->fLayoutValid = true;
		fLayoutData->fMinMaxValid = true;
		fLayoutData->fNeedsRelayout = false;
 
		// layout children
		for(BView* child = fFirstChild; child; child = child->fNextSibling) {
			if (!child->IsHidden(child))
				child->_Layout(force, context);
		}
 
		LayoutChanged();
 
		fLayoutData->fLayoutContext = oldContext;
 
		// invalidate the drawn content, if requested
		if (fFlags & B_INVALIDATE_AFTER_LAYOUT)
			Invalidate();
	}
}
 
 
void
BView::_LayoutLeft(BLayout* deleted)
{
	// If our layout is added to another layout (via BLayout::AddItem())
	// then we share ownership of our layout. In the event that our layout gets
	// deleted by the layout it has been added to, this method is called so
	// that we don't double-delete our layout.
	if (fLayoutData->fLayout == deleted)
		fLayoutData->fLayout = NULL;
	InvalidateLayout();
}
 
 
void
BView::_InvalidateParentLayout()
{
	if (!fParent)
		return;
 
	BLayout* layout = fLayoutData->fLayout;
	BLayout* layoutParent = layout ? layout->Layout() : NULL;
	if (layoutParent) {
		layoutParent->InvalidateLayout();
	} else if (fLayoutData->fLayoutItems.CountItems() > 0) {
		int32 count = fLayoutData->fLayoutItems.CountItems();
		for (int32 i = 0; i < count; i++) {
			fLayoutData->fLayoutItems.ItemAt(i)->Layout()->InvalidateLayout();
		}
	} else {
		fParent->InvalidateLayout();
	}
}
 
 
//	#pragma mark - Private Functions
 
 
void
BView::_InitData(BRect frame, const char* name, uint32 resizingMode,
	uint32 flags)
{
	// Info: The name of the view is set by BHandler constructor
 
	STRACE(("BView::_InitData: enter\n"));
 
	// initialize members
	if ((resizingMode & ~_RESIZE_MASK_) || (flags & _RESIZE_MASK_))
		printf("%s BView::_InitData(): resizing mode or flags swapped\n", name);
 
	// There are applications that swap the resize mask and the flags in the
	// BView constructor. This does not cause problems under BeOS as it just
	// ors the two fields to one 32bit flag.
	// For now we do the same but print the above warning message.
	// TODO: this should be removed at some point and the original
	// version restored:
	// fFlags = (resizingMode & _RESIZE_MASK_) | (flags & ~_RESIZE_MASK_);
	fFlags = resizingMode | flags;
 
	// handle rounding
	frame.left = roundf(frame.left);
	frame.top = roundf(frame.top);
	frame.right = roundf(frame.right);
	frame.bottom = roundf(frame.bottom);
 
	fParentOffset.Set(frame.left, frame.top);
 
	fOwner = NULL;
	fParent = NULL;
	fNextSibling = NULL;
	fPreviousSibling = NULL;
	fFirstChild = NULL;
 
	fShowLevel = 0;
	fTopLevelView = false;
 
	fCurrentPicture = NULL;
	fCommArray = NULL;
 
	fVerScroller = NULL;
	fHorScroller = NULL;
 
	fIsPrinting = false;
	fAttached = false;
 
	// TODO: Since we cannot communicate failure, we don't use std::nothrow here
	// TODO: Maybe we could auto-delete those views on AddChild() instead?
	fState = new BPrivate::ViewState;
 
	fBounds = frame.OffsetToCopy(B_ORIGIN);
	fShelf = NULL;
 
	fEventMask = 0;
	fEventOptions = 0;
	fMouseEventOptions = 0;
 
	fLayoutData = new LayoutData;
 
	fToolTip = NULL;
 
	if ((flags & B_SUPPORTS_LAYOUT) != 0) {
		SetViewUIColor(B_PANEL_BACKGROUND_COLOR);
		SetLowUIColor(ViewUIColor());
		SetHighUIColor(B_PANEL_TEXT_COLOR);
	}
}
 
 
void
BView::_RemoveCommArray()
{
	if (fCommArray) {
		delete [] fCommArray->array;
		delete fCommArray;
		fCommArray = NULL;
	}
}
 
 
void
BView::_SetOwner(BWindow* newOwner)
{
	if (!newOwner)
		_RemoveCommArray();
 
	if (fOwner != newOwner && fOwner) {
		if (fOwner->fFocus == this)
			MakeFocus(false);
 
		if (fOwner->fLastMouseMovedView == this)
			fOwner->fLastMouseMovedView = NULL;
 
		fOwner->RemoveHandler(this);
		if (fShelf)
			fOwner->RemoveHandler(fShelf);
	}
 
	if (newOwner && newOwner != fOwner) {
		newOwner->AddHandler(this);
		if (fShelf)
			newOwner->AddHandler(fShelf);
 
		if (fTopLevelView)
			SetNextHandler(newOwner);
		else
			SetNextHandler(fParent);
	}
 
	fOwner = newOwner;
 
	for (BView* child = fFirstChild; child != NULL; child = child->fNextSibling)
		child->_SetOwner(newOwner);
}
 
 
void
BView::_ClipToPicture(BPicture* picture, BPoint where, bool invert, bool sync)
{
	if (!_CheckOwnerLockAndSwitchCurrent())
		return;
 
	if (picture == NULL) {
		fOwner->fLink->StartMessage(AS_VIEW_CLIP_TO_PICTURE);
		fOwner->fLink->Attach<int32>(-1);
 
		// NOTE: No need to sync here, since the -1 token cannot
		// become invalid on the server.
	} else {
		fOwner->fLink->StartMessage(AS_VIEW_CLIP_TO_PICTURE);
		fOwner->fLink->Attach<int32>(picture->Token());
		fOwner->fLink->Attach<BPoint>(where);
		fOwner->fLink->Attach<bool>(invert);
 
		// NOTE: "sync" defaults to true in public methods. If you know what
		// you are doing, i.e. if you know your BPicture stays valid, you
		// can avoid the performance impact of syncing. In a use-case where
		// the client creates BPictures on the stack, these BPictures may
		// have issued a AS_DELETE_PICTURE command to the ServerApp when Draw()
		// goes out of scope, and the command is processed earlier in the
		// ServerApp thread than the AS_VIEW_CLIP_TO_PICTURE command in the
		// ServerWindow thread, which will then have the result that no
		// ServerPicture is found of the token.
		if (sync)
			Sync();
	}
}
 
 
void
BView::_ClipToRect(BRect rect, bool inverse)
{
	if (_CheckOwnerLockAndSwitchCurrent()) {
		fOwner->fLink->StartMessage(AS_VIEW_CLIP_TO_RECT);
		fOwner->fLink->Attach<bool>(inverse);
		fOwner->fLink->Attach<BRect>(rect);
		_FlushIfNotInTransaction();
	}
}
 
 
void
BView::_ClipToShape(BShape* shape, bool inverse)
{
	if (shape == NULL)
		return;
 
	shape_data* sd = (shape_data*)shape->fPrivateData;
	if (sd->opCount == 0 || sd->ptCount == 0)
		return;
 
	if (_CheckOwnerLockAndSwitchCurrent()) {
		fOwner->fLink->StartMessage(AS_VIEW_CLIP_TO_SHAPE);
		fOwner->fLink->Attach<bool>(inverse);
		fOwner->fLink->Attach<int32>(sd->opCount);
		fOwner->fLink->Attach<int32>(sd->ptCount);
		fOwner->fLink->Attach(sd->opList, sd->opCount * sizeof(uint32));
		fOwner->fLink->Attach(sd->ptList, sd->ptCount * sizeof(BPoint));
		_FlushIfNotInTransaction();
	}
}
 
 
bool
BView::_RemoveChildFromList(BView* child)
{
	if (child->fParent != this)
		return false;
 
	if (fFirstChild == child) {
		// it's the first view in the list
		fFirstChild = child->fNextSibling;
	} else {
		// there must be a previous sibling
		child->fPreviousSibling->fNextSibling = child->fNextSibling;
	}
 
	if (child->fNextSibling)
		child->fNextSibling->fPreviousSibling = child->fPreviousSibling;
 
	child->fParent = NULL;
	child->fNextSibling = NULL;
	child->fPreviousSibling = NULL;
 
	return true;
}
 
 
bool
BView::_AddChildToList(BView* child, BView* before)
{
	if (!child)
		return false;
	if (child->fParent != NULL) {
		debugger("View already belongs to someone else");
		return false;
	}
	if (before != NULL && before->fParent != this) {
		debugger("Invalid before view");
		return false;
	}
 
	if (before != NULL) {
		// add view before this one
		child->fNextSibling = before;
		child->fPreviousSibling = before->fPreviousSibling;
		if (child->fPreviousSibling != NULL)
			child->fPreviousSibling->fNextSibling = child;
 
		before->fPreviousSibling = child;
		if (fFirstChild == before)
			fFirstChild = child;
	} else {
		// add view to the end of the list
		BView* last = fFirstChild;
		while (last != NULL && last->fNextSibling != NULL) {
			last = last->fNextSibling;
		}
 
		if (last != NULL) {
			last->fNextSibling = child;
			child->fPreviousSibling = last;
		} else {
			fFirstChild = child;
			child->fPreviousSibling = NULL;
		}
 
		child->fNextSibling = NULL;
	}
 
	child->fParent = this;
	return true;
}
 
 
/*!	\brief Creates the server counterpart of this view.
	This is only done for views that are part of the view hierarchy, ie. when
	they are attached to a window.
	RemoveSelf() deletes the server object again.
*/
bool
BView::_CreateSelf()
{
	// AS_VIEW_CREATE & AS_VIEW_CREATE_ROOT do not use the
	// current view mechanism via _CheckLockAndSwitchCurrent() - the token
	// of the view and its parent are both send to the server.
 
	if (fTopLevelView)
		fOwner->fLink->StartMessage(AS_VIEW_CREATE_ROOT);
	else
 		fOwner->fLink->StartMessage(AS_VIEW_CREATE);
 
	fOwner->fLink->Attach<int32>(_get_object_token_(this));
	fOwner->fLink->AttachString(Name());
	fOwner->fLink->Attach<BRect>(Frame());
	fOwner->fLink->Attach<BPoint>(LeftTop());
	fOwner->fLink->Attach<uint32>(ResizingMode());
	fOwner->fLink->Attach<uint32>(fEventMask);
	fOwner->fLink->Attach<uint32>(fEventOptions);
	fOwner->fLink->Attach<uint32>(Flags());
	fOwner->fLink->Attach<bool>(IsHidden(this));
	fOwner->fLink->Attach<rgb_color>(fState->view_color);
	if (fTopLevelView)
		fOwner->fLink->Attach<int32>(B_NULL_TOKEN);
	else
		fOwner->fLink->Attach<int32>(_get_object_token_(fParent));
	fOwner->fLink->Flush();
 
	_CheckOwnerLockAndSwitchCurrent();
	fState->UpdateServerState(*fOwner->fLink);
 
	// we create all its children, too
 
	for (BView* child = fFirstChild; child != NULL;
			child = child->fNextSibling) {
		child->_CreateSelf();
	}
 
	fOwner->fLink->Flush();
	return true;
}
 
 
/*!	Sets the new view position.
	It doesn't contact the server, though - the only case where this
	is called outside of MoveTo() is as reaction of moving a view
	in the server (a.k.a. B_WINDOW_RESIZED).
	It also calls the BView's FrameMoved() hook.
*/
void
BView::_MoveTo(int32 x, int32 y)
{
	fParentOffset.Set(x, y);
 
	if (Window() != NULL && fFlags & B_FRAME_EVENTS) {
		BMessage moved(B_VIEW_MOVED);
		moved.AddInt64("when", system_time());
		moved.AddPoint("where", BPoint(x, y));
 
		BMessenger target(this);
		target.SendMessage(&moved);
	}
}
 
 
/*!	Computes the actual new frame size and recalculates the size of
	the children as well.
	It doesn't contact the server, though - the only case where this
	is called outside of ResizeBy() is as reaction of resizing a view
	in the server (a.k.a. B_WINDOW_RESIZED).
	It also calls the BView's FrameResized() hook.
*/
void
BView::_ResizeBy(int32 deltaWidth, int32 deltaHeight)
{
	fBounds.right += deltaWidth;
	fBounds.bottom += deltaHeight;
 
	if (Window() == NULL) {
		// we're not supposed to exercise the resizing code in case
		// we haven't been attached to a window yet
		return;
	}
 
	// layout the children
	if ((fFlags & B_SUPPORTS_LAYOUT) != 0) {
		Relayout();
	} else {
		for (BView* child = fFirstChild; child; child = child->fNextSibling)
			child->_ParentResizedBy(deltaWidth, deltaHeight);
	}
 
	if (fFlags & B_FRAME_EVENTS) {
		BMessage resized(B_VIEW_RESIZED);
		resized.AddInt64("when", system_time());
		resized.AddInt32("width", fBounds.IntegerWidth());
		resized.AddInt32("height", fBounds.IntegerHeight());
 
		BMessenger target(this);
		target.SendMessage(&resized);
	}
}
 
 
/*!	Relayouts the view according to its resizing mode. */
void
BView::_ParentResizedBy(int32 x, int32 y)
{
	uint32 resizingMode = fFlags & _RESIZE_MASK_;
	BRect newFrame = Frame();
 
	// follow with left side
	if ((resizingMode & 0x0F00U) == _VIEW_RIGHT_ << 8)
		newFrame.left += x;
	else if ((resizingMode & 0x0F00U) == _VIEW_CENTER_ << 8)
		newFrame.left += x / 2;
 
	// follow with right side
	if ((resizingMode & 0x000FU) == _VIEW_RIGHT_)
		newFrame.right += x;
	else if ((resizingMode & 0x000FU) == _VIEW_CENTER_)
		newFrame.right += x / 2;
 
	// follow with top side
	if ((resizingMode & 0xF000U) == _VIEW_BOTTOM_ << 12)
		newFrame.top += y;
	else if ((resizingMode & 0xF000U) == _VIEW_CENTER_ << 12)
		newFrame.top += y / 2;
 
	// follow with bottom side
	if ((resizingMode & 0x00F0U) == _VIEW_BOTTOM_ << 4)
		newFrame.bottom += y;
	else if ((resizingMode & 0x00F0U) == _VIEW_CENTER_ << 4)
		newFrame.bottom += y / 2;
 
	if (newFrame.LeftTop() != fParentOffset) {
		// move view
		_MoveTo((int32)roundf(newFrame.left), (int32)roundf(newFrame.top));
	}
 
	if (newFrame != Frame()) {
		// resize view
		int32 widthDiff = (int32)(newFrame.Width() - fBounds.Width());
		int32 heightDiff = (int32)(newFrame.Height() - fBounds.Height());
		_ResizeBy(widthDiff, heightDiff);
	}
}
 
 
void
BView::_Activate(bool active)
{
	WindowActivated(active);
 
	for (BView* child = fFirstChild; child != NULL;
			child = child->fNextSibling) {
		child->_Activate(active);
	}
}
 
 
void
BView::_Attach()
{
	if (fOwner != NULL) {
		// unmask state flags to force [re]syncing with the app_server
		fState->valid_flags &= ~(B_VIEW_WHICH_VIEW_COLOR_BIT
			| B_VIEW_WHICH_LOW_COLOR_BIT | B_VIEW_WHICH_HIGH_COLOR_BIT);
 
		if (fState->which_view_color != B_NO_COLOR)
			SetViewUIColor(fState->which_view_color,
				fState->which_view_color_tint);
 
		if (fState->which_high_color != B_NO_COLOR)
			SetHighUIColor(fState->which_high_color,
				fState->which_high_color_tint);
 
		if (fState->which_low_color != B_NO_COLOR)
			SetLowUIColor(fState->which_low_color,
				fState->which_low_color_tint);
	}
 
	AttachedToWindow();
 
	fAttached = true;
 
	// after giving the view a chance to do this itself,
	// check for the B_PULSE_NEEDED flag and make sure the
	// window set's up the pulse messaging
	if (fOwner) {
		if (fFlags & B_PULSE_NEEDED) {
			_CheckLock();
			if (fOwner->fPulseRunner == NULL)
				fOwner->SetPulseRate(fOwner->PulseRate());
		}
 
		if (!fOwner->IsHidden())
			Invalidate();
	}
 
	for (BView* child = fFirstChild; child != NULL;
			child = child->fNextSibling) {
		// we need to check for fAttached as new views could have been
		// added in AttachedToWindow() - and those are already attached
		if (!child->fAttached)
			child->_Attach();
	}
 
	AllAttached();
}
 
 
void
BView::_ColorsUpdated(BMessage* message)
{
	if (fTopLevelView
		&& fLayoutData->fLayout != NULL
		&& !fState->IsValid(B_VIEW_WHICH_VIEW_COLOR_BIT)) {
		SetViewUIColor(B_PANEL_BACKGROUND_COLOR);
		SetHighUIColor(B_PANEL_TEXT_COLOR);
	}
 
	rgb_color color;
 
	const char* colorName = ui_color_name(fState->which_view_color);
	if (colorName != NULL && message->FindColor(colorName, &color) == B_OK) {
		fState->view_color = tint_color(color, fState->which_view_color_tint);
		fState->valid_flags |= B_VIEW_VIEW_COLOR_BIT;
	}
 
	colorName = ui_color_name(fState->which_low_color);
	if (colorName != NULL && message->FindColor(colorName, &color) == B_OK) {
		fState->low_color = tint_color(color, fState->which_low_color_tint);
		fState->valid_flags |= B_VIEW_LOW_COLOR_BIT;
	}
 
	colorName = ui_color_name(fState->which_high_color);
	if (colorName != NULL && message->FindColor(colorName, &color) == B_OK) {
		fState->high_color = tint_color(color, fState->which_high_color_tint);
		fState->valid_flags |= B_VIEW_HIGH_COLOR_BIT;
	}
 
	MessageReceived(message);
 
	for (BView* child = fFirstChild; child != NULL;
			child = child->fNextSibling)
		child->_ColorsUpdated(message);
 
	Invalidate();
}
 
 
void
BView::_Detach()
{
	DetachedFromWindow();
	fAttached = false;
 
	for (BView* child = fFirstChild; child != NULL;
			child = child->fNextSibling) {
		child->_Detach();
	}
 
	AllDetached();
 
	if (fOwner) {
		_CheckLock();
 
		if (!fOwner->IsHidden())
			Invalidate();
 
		// make sure our owner doesn't need us anymore
 
		if (fOwner->CurrentFocus() == this) {
			MakeFocus(false);
			// MakeFocus() is virtual and might not be
			// passing through to the BView version,
			// but we need to make sure at this point
			// that we are not the focus view anymore.
			if (fOwner->CurrentFocus() == this)
				fOwner->_SetFocus(NULL, true);
		}
 
		if (fOwner->fDefaultButton == this)
			fOwner->SetDefaultButton(NULL);
 
		if (fOwner->fKeyMenuBar == this)
			fOwner->fKeyMenuBar = NULL;
 
		if (fOwner->fLastMouseMovedView == this)
			fOwner->fLastMouseMovedView = NULL;
 
		if (fOwner->fLastViewToken == _get_object_token_(this))
			fOwner->fLastViewToken = B_NULL_TOKEN;
 
		_SetOwner(NULL);
	}
}
 
 
void
BView::_Draw(BRect updateRect)
{
	if (IsHidden(this) || !(Flags() & B_WILL_DRAW))
		return;
 
	// NOTE: if ViewColor() == B_TRANSPARENT_COLOR and no B_WILL_DRAW
	// -> View is simply not drawn at all
 
	_SwitchServerCurrentView();
 
	ConvertFromScreen(&updateRect);
 
	// TODO: make states robust (the hook implementation could
	// mess things up if it uses non-matching Push- and PopState(),
	// we would not be guaranteed to still have the same state on
	// the stack after having called Draw())
	PushState();
	Draw(updateRect);
	PopState();
	Flush();
}
 
 
void
BView::_DrawAfterChildren(BRect updateRect)
{
	if (IsHidden(this) || !(Flags() & B_WILL_DRAW)
		|| !(Flags() & B_DRAW_ON_CHILDREN))
		return;
 
	_SwitchServerCurrentView();
 
	ConvertFromScreen(&updateRect);
 
	// TODO: make states robust (see above)
	PushState();
	DrawAfterChildren(updateRect);
	PopState();
	Flush();
}
 
 
void
BView::_FontsUpdated(BMessage* message)
{
	MessageReceived(message);
 
	for (BView* child = fFirstChild; child != NULL;
			child = child->fNextSibling) {
		child->_FontsUpdated(message);
	}
}
 
 
void
BView::_Pulse()
{
	if ((Flags() & B_PULSE_NEEDED) != 0)
		Pulse();
 
	for (BView* child = fFirstChild; child != NULL;
			child = child->fNextSibling) {
		child->_Pulse();
	}
}
 
 
void
BView::_UpdateStateForRemove()
{
	// TODO: _CheckLockAndSwitchCurrent() would be good enough, no?
	if (!_CheckOwnerLockAndSwitchCurrent())
		return;
 
	fState->UpdateFrom(*fOwner->fLink);
//	if (!fState->IsValid(B_VIEW_FRAME_BIT)) {
//		fOwner->fLink->StartMessage(AS_VIEW_GET_COORD);
//
//		status_t code;
//		if (fOwner->fLink->FlushWithReply(code) == B_OK
//			&& code == B_OK) {
//			fOwner->fLink->Read<BPoint>(&fParentOffset);
//			fOwner->fLink->Read<BRect>(&fBounds);
//			fState->valid_flags |= B_VIEW_FRAME_BIT;
//		}
//	}
 
	// update children as well
 
	for (BView* child = fFirstChild; child != NULL;
			child = child->fNextSibling) {
		if (child->fOwner)
			child->_UpdateStateForRemove();
	}
}
 
 
inline void
BView::_UpdatePattern(::pattern pattern)
{
	if (fState->IsValid(B_VIEW_PATTERN_BIT) && pattern == fState->pattern)
		return;
 
	if (fOwner) {
		_CheckLockAndSwitchCurrent();
 
		fOwner->fLink->StartMessage(AS_VIEW_SET_PATTERN);
		fOwner->fLink->Attach< ::pattern>(pattern);
 
		fState->valid_flags |= B_VIEW_PATTERN_BIT;
	}
 
	fState->pattern = pattern;
}
 
 
void
BView::_FlushIfNotInTransaction()
{
	if (!fOwner->fInTransaction) {
		fOwner->Flush();
	}
}
 
 
BShelf*
BView::_Shelf() const
{
	return fShelf;
}
 
 
void
BView::_SetShelf(BShelf* shelf)
{
	if (fShelf != NULL && fOwner != NULL)
		fOwner->RemoveHandler(fShelf);
 
	fShelf = shelf;
 
	if (fShelf != NULL && fOwner != NULL)
		fOwner->AddHandler(fShelf);
}
 
 
status_t
BView::_SetViewBitmap(const BBitmap* bitmap, BRect srcRect, BRect dstRect,
	uint32 followFlags, uint32 options)
{
	if (!_CheckOwnerLockAndSwitchCurrent())
		return B_ERROR;
 
	int32 serverToken = bitmap ? bitmap->_ServerToken() : -1;
 
	fOwner->fLink->StartMessage(AS_VIEW_SET_VIEW_BITMAP);
	fOwner->fLink->Attach<int32>(serverToken);
	fOwner->fLink->Attach<BRect>(srcRect);
	fOwner->fLink->Attach<BRect>(dstRect);
	fOwner->fLink->Attach<int32>(followFlags);
	fOwner->fLink->Attach<int32>(options);
 
	status_t status = B_ERROR;
	fOwner->fLink->FlushWithReply(status);
 
	return status;
}
 
 
bool
BView::_CheckOwnerLockAndSwitchCurrent() const
{
	STRACE(("BView(%s)::_CheckOwnerLockAndSwitchCurrent()\n", Name()));
 
	if (fOwner == NULL) {
		debugger("View method requires owner and doesn't have one.");
		return false;
	}
 
	_CheckLockAndSwitchCurrent();
 
	return true;
}
 
 
bool
BView::_CheckOwnerLock() const
{
	if (fOwner) {
		fOwner->check_lock();
		return true;
	} else {
		debugger("View method requires owner and doesn't have one.");
		return false;
	}
}
 
 
void
BView::_CheckLockAndSwitchCurrent() const
{
	STRACE(("BView(%s)::_CheckLockAndSwitchCurrent()\n", Name()));
 
	if (!fOwner)
		return;
 
	fOwner->check_lock();
 
	_SwitchServerCurrentView();
}
 
 
void
BView::_CheckLock() const
{
	if (fOwner)
		fOwner->check_lock();
}
 
 
void
BView::_SwitchServerCurrentView() const
{
	int32 serverToken = _get_object_token_(this);
 
	if (fOwner->fLastViewToken != serverToken) {
		STRACE(("contacting app_server... sending token: %" B_PRId32 "\n",
			serverToken));
		fOwner->fLink->StartMessage(AS_SET_CURRENT_VIEW);
		fOwner->fLink->Attach<int32>(serverToken);
 
		fOwner->fLastViewToken = serverToken;
	}
}
 
 
status_t
BView::ScrollWithMouseWheelDelta(BScrollBar* scrollBar, float delta)
{
	if (scrollBar == NULL || delta == 0.0f)
		return B_BAD_VALUE;
 
	float smallStep;
	float largeStep;
	scrollBar->GetSteps(&smallStep, &largeStep);
 
	// pressing the shift key scrolls faster (following the pseudo-standard set
	// by other desktop environments).
	if ((modifiers() & B_SHIFT_KEY) != 0)
		delta *= largeStep;
	else
		delta *= smallStep * 3;
 
	scrollBar->SetValue(scrollBar->Value() + delta);
 
	return B_OK;
}
 
 
#if __GNUC__ == 2
 
 
extern "C" void
_ReservedView1__5BView(BView* view, BRect rect)
{
	view->BView::DrawAfterChildren(rect);
}
 
 
extern "C" void
_ReservedView2__5BView(BView* view)
{
	// MinSize()
	perform_data_min_size data;
	view->Perform(PERFORM_CODE_MIN_SIZE, &data);
}
 
 
extern "C" void
_ReservedView3__5BView(BView* view)
{
	// MaxSize()
	perform_data_max_size data;
	view->Perform(PERFORM_CODE_MAX_SIZE, &data);
}
 
 
extern "C" BSize
_ReservedView4__5BView(BView* view)
{
	// PreferredSize()
	perform_data_preferred_size data;
	view->Perform(PERFORM_CODE_PREFERRED_SIZE, &data);
	return data.return_value;
}
 
 
extern "C" BAlignment
_ReservedView5__5BView(BView* view)
{
	// LayoutAlignment()
	perform_data_layout_alignment data;
	view->Perform(PERFORM_CODE_LAYOUT_ALIGNMENT, &data);
	return data.return_value;
}
 
 
extern "C" bool
_ReservedView6__5BView(BView* view)
{
	// HasHeightForWidth()
	perform_data_has_height_for_width data;
	view->Perform(PERFORM_CODE_HAS_HEIGHT_FOR_WIDTH, &data);
	return data.return_value;
}
 
 
extern "C" void
_ReservedView7__5BView(BView* view, float width, float* min, float* max,
	float* preferred)
{
	// GetHeightForWidth()
	perform_data_get_height_for_width data;
	data.width = width;
	view->Perform(PERFORM_CODE_GET_HEIGHT_FOR_WIDTH, &data);
	if (min != NULL)
		*min = data.min;
	if (max != NULL)
		*max = data.max;
	if (preferred != NULL)
		*preferred = data.preferred;
}
 
 
extern "C" void
_ReservedView8__5BView(BView* view, BLayout* layout)
{
	// SetLayout()
	perform_data_set_layout data;
	data.layout = layout;
	view->Perform(PERFORM_CODE_SET_LAYOUT, &data);
}
 
 
extern "C" void
_ReservedView9__5BView(BView* view, bool descendants)
{
	// LayoutInvalidated()
	perform_data_layout_invalidated data;
	data.descendants = descendants;
	view->Perform(PERFORM_CODE_LAYOUT_INVALIDATED, &data);
}
 
 
extern "C" void
_ReservedView10__5BView(BView* view)
{
	// DoLayout()
	view->Perform(PERFORM_CODE_DO_LAYOUT, NULL);
}
 
 
#endif	// __GNUC__ == 2
 
 
extern "C" bool
B_IF_GCC_2(_ReservedView11__5BView, _ZN5BView15_ReservedView11Ev)(
	BView* view, BPoint point, BToolTip** _toolTip)
{
	// GetToolTipAt()
	perform_data_get_tool_tip_at data;
	data.point = point;
	data.tool_tip = _toolTip;
	view->Perform(PERFORM_CODE_GET_TOOL_TIP_AT, &data);
	return data.return_value;
}
 
 
extern "C" void
B_IF_GCC_2(_ReservedView12__5BView, _ZN5BView15_ReservedView12Ev)(
	BView* view)
{
	// LayoutChanged();
	view->Perform(PERFORM_CODE_LAYOUT_CHANGED, NULL);
}
 
 
void BView::_ReservedView13() {}
void BView::_ReservedView14() {}
void BView::_ReservedView15() {}
void BView::_ReservedView16() {}
 
 
BView::BView(const BView& other)
	:
	BHandler()
{
	// this is private and not functional, but exported
}
 
 
BView&
BView::operator=(const BView& other)
{
	// this is private and not functional, but exported
	return *this;
}
 
 
void
BView::_PrintToStream()
{
	printf("BView::_PrintToStream()\n");
	printf("\tName: %s\n"
		"\tParent: %s\n"
		"\tFirstChild: %s\n"
		"\tNextSibling: %s\n"
		"\tPrevSibling: %s\n"
		"\tOwner(Window): %s\n"
		"\tToken: %" B_PRId32 "\n"
		"\tFlags: %" B_PRId32 "\n"
		"\tView origin: (%f,%f)\n"
		"\tView Bounds rectangle: (%f,%f,%f,%f)\n"
		"\tShow level: %d\n"
		"\tTopView?: %s\n"
		"\tBPicture: %s\n"
		"\tVertical Scrollbar %s\n"
		"\tHorizontal Scrollbar %s\n"
		"\tIs Printing?: %s\n"
		"\tShelf?: %s\n"
		"\tEventMask: %" B_PRId32 "\n"
		"\tEventOptions: %" B_PRId32 "\n",
	Name(),
	fParent ? fParent->Name() : "NULL",
	fFirstChild ? fFirstChild->Name() : "NULL",
	fNextSibling ? fNextSibling->Name() : "NULL",
	fPreviousSibling ? fPreviousSibling->Name() : "NULL",
	fOwner ? fOwner->Name() : "NULL",
	_get_object_token_(this),
	fFlags,
	fParentOffset.x, fParentOffset.y,
	fBounds.left, fBounds.top, fBounds.right, fBounds.bottom,
	fShowLevel,
	fTopLevelView ? "YES" : "NO",
	fCurrentPicture? "YES" : "NULL",
	fVerScroller? "YES" : "NULL",
	fHorScroller? "YES" : "NULL",
	fIsPrinting? "YES" : "NO",
	fShelf? "YES" : "NO",
	fEventMask,
	fEventOptions);
 
	printf("\tState status:\n"
		"\t\tLocalCoordianteSystem: (%f,%f)\n"
		"\t\tPenLocation: (%f,%f)\n"
		"\t\tPenSize: %f\n"
		"\t\tHighColor: [%d,%d,%d,%d]\n"
		"\t\tLowColor: [%d,%d,%d,%d]\n"
		"\t\tViewColor: [%d,%d,%d,%d]\n"
		"\t\tPattern: %" B_PRIx64 "\n"
		"\t\tDrawingMode: %d\n"
		"\t\tLineJoinMode: %d\n"
		"\t\tLineCapMode: %d\n"
		"\t\tMiterLimit: %f\n"
		"\t\tAlphaSource: %d\n"
		"\t\tAlphaFuntion: %d\n"
		"\t\tScale: %f\n"
		"\t\t(Print)FontAliasing: %s\n"
		"\t\tFont Info:\n",
	fState->origin.x, fState->origin.y,
	fState->pen_location.x, fState->pen_location.y,
	fState->pen_size,
	fState->high_color.red, fState->high_color.blue, fState->high_color.green, fState->high_color.alpha,
	fState->low_color.red, fState->low_color.blue, fState->low_color.green, fState->low_color.alpha,
	fState->view_color.red, fState->view_color.blue, fState->view_color.green, fState->view_color.alpha,
	*((uint64*)&(fState->pattern)),
	fState->drawing_mode,
	fState->line_join,
	fState->line_cap,
	fState->miter_limit,
	fState->alpha_source_mode,
	fState->alpha_function_mode,
	fState->scale,
	fState->font_aliasing? "YES" : "NO");
 
	fState->font.PrintToStream();
 
	// TODO: also print the line array.
}
 
 
void
BView::_PrintTree()
{
	int32 spaces = 2;
	BView* c = fFirstChild; //c = short for: current
	printf( "'%s'\n", Name() );
	if (c != NULL) {
		while(true) {
			// action block
			{
				for (int i = 0; i < spaces; i++)
					printf(" ");
 
				printf( "'%s'\n", c->Name() );
			}
 
			// go deep
			if (c->fFirstChild) {
				c = c->fFirstChild;
				spaces += 2;
			} else {
				// go right
				if (c->fNextSibling) {
					c = c->fNextSibling;
				} else {
					// go up
					while (!c->fParent->fNextSibling && c->fParent != this) {
						c = c->fParent;
						spaces -= 2;
					}
 
					// that enough! We've reached this view.
					if (c->fParent == this)
						break;
 
					c = c->fParent->fNextSibling;
					spaces -= 2;
				}
			}
		}
	}
}
 
 
// #pragma mark -
 
 
BLayoutItem*
BView::Private::LayoutItemAt(int32 index)
{
	return fView->fLayoutData->fLayoutItems.ItemAt(index);
}
 
 
int32
BView::Private::CountLayoutItems()
{
	return fView->fLayoutData->fLayoutItems.CountItems();
}
 
 
void
BView::Private::RegisterLayoutItem(BLayoutItem* item)
{
	fView->fLayoutData->fLayoutItems.AddItem(item);
}
 
 
void
BView::Private::DeregisterLayoutItem(BLayoutItem* item)
{
	fView->fLayoutData->fLayoutItems.RemoveItem(item);
}
 
 
bool
BView::Private::MinMaxValid()
{
	return fView->fLayoutData->fMinMaxValid;
}
 
 
bool
BView::Private::WillLayout()
{
	BView::LayoutData* data = fView->fLayoutData;
	if (data->fLayoutInProgress)
		return false;
	if (data->fNeedsRelayout || !data->fLayoutValid || !data->fMinMaxValid)
		return true;
	return false;
}