C++ BRect::LeftTop方法代码示例

void OptionsPanel :: Draw( BRect r )
{
	inherited::Draw( r ) ;
	
	r = Bounds() ;
	BeginLineArray( 1 ) ;
	AddLine( r.LeftTop()    , r.RightTop()    , Colours::Grey85 ) ;
	EndLineArray( ) ;
}

	// SimpleItem interface
	virtual	void Draw(BView* owner, BRect itemFrame, uint32 flags)
	{
		SimpleItem::DrawBackground(owner, itemFrame, flags);

		// text
		if (IsSelected())
			owner->SetHighColor(ui_color(B_LIST_SELECTED_ITEM_TEXT_COLOR));
		else
			owner->SetHighColor(ui_color(B_LIST_ITEM_TEXT_COLOR));
		font_height fh;
		owner->GetFontHeight(&fh);
		BString truncatedString(Text());
		owner->TruncateString(&truncatedString, B_TRUNCATE_MIDDLE,
			itemFrame.Width() - kBorderOffset - kMarkWidth - kTextOffset
			- kBorderOffset);
		float height = itemFrame.Height();
		float textHeight = fh.ascent + fh.descent;
		BPoint pos;
		pos.x = itemFrame.left + kBorderOffset + kMarkWidth + kTextOffset;
		pos.y = itemFrame.top + ceilf((height - textHeight) / 2.0 + fh.ascent);
		owner->DrawString(truncatedString.String(), pos);

		if (!fMarkEnabled)
			return;

		// mark
		BRect markRect = itemFrame;
		float markRectBorderTint = B_DARKEN_1_TINT;
		float markRectFillTint = 1.04;
		float markTint = B_DARKEN_4_TINT;
					// Dark Themes
		rgb_color lowColor = owner->LowColor();
		if (lowColor.red + lowColor.green + lowColor.blue < 128 * 3) {
			markRectBorderTint = B_LIGHTEN_2_TINT;
			markRectFillTint = 0.85;
			markTint = 0.1;
		}
		markRect.left += kBorderOffset;
		markRect.right = markRect.left + kMarkWidth;
		markRect.top = (markRect.top + markRect.bottom - kMarkWidth) / 2.0;
		markRect.bottom = markRect.top + kMarkWidth;
		owner->SetHighColor(tint_color(owner->LowColor(), markRectBorderTint));
		owner->StrokeRect(markRect);
		markRect.InsetBy(1, 1);
		owner->SetHighColor(tint_color(owner->LowColor(), markRectFillTint));
		owner->FillRect(markRect);
		if (fMarked) {
			markRect.InsetBy(2, 2);
			owner->SetHighColor(tint_color(owner->LowColor(),
				markTint));
			owner->SetPenSize(2);
			owner->StrokeLine(markRect.LeftTop(), markRect.RightBottom());
			owner->StrokeLine(markRect.LeftBottom(), markRect.RightTop());
			owner->SetPenSize(1);
		}
	}

static void
draw_ellipse(void* _context, const BRect& rect, bool fill)
{
	adapter_context* context = reinterpret_cast<adapter_context*>(_context);
	BPoint radii((rect.Width() + 1) / 2.0f, (rect.Height() + 1) / 2.0f);
	BPoint center = rect.LeftTop() + radii;
	((void (*)(void*, BPoint, BPoint))
		context->function_table[fill ? 12 : 11])(context->user_data, center,
			radii);
}

// layout
BRect
PopupSlider::layout(BRect frame)
{
	MoveTo(frame.LeftTop());
	ResizeTo(frame.Width(), frame.Height());

	fSliderButtonRect.OffsetTo(Bounds().right - fSliderButtonRect.Width(),
							   fSliderButtonRect.top);
	return Frame();
}

BPoint
TReplicantShelf::AdjustReplicantBy(BRect frame, BMessage* message) const
{
	// added in AcceptAddon, from TReplicantTray
	BPoint point;
	message->FindPoint("_pjp_loc", &point);
	message->RemoveName("_pjp_loc");

	return point - frame.LeftTop();
}

// PositionMarkerAt
void
ColorField::PositionMarkerAt(BPoint where)
{
	BRect rect = _BitmapRect();
	where.ConstrainTo(rect);
	where -= rect.LeftTop();

	fLastMarkerPosition = fMarkerPosition;
	fMarkerPosition = where;
	Invalidate();
}

BToolBar::BToolBar(BRect frame, orientation ont)
	:
	BGroupView(ont),
	fOrientation(ont)
{
	_Init();

	MoveTo(frame.LeftTop());
	ResizeTo(frame.Width(), frame.Height());
	SetResizingMode(B_FOLLOW_LEFT_RIGHT | B_FOLLOW_TOP);
}

filter_result
ShelfContainerViewFilter::_ObjectDropFilter(BMessage *msg, BHandler **_handler)
{
	BView *mouseView = NULL;
	if (*_handler)
		mouseView = dynamic_cast<BView*>(*_handler);

	if (msg->WasDropped()) {
		if (!fShelf->fAllowDragging) {
			printf("Dragging replicants isn't allowed to this shelf.");
			beep();
			return B_SKIP_MESSAGE;
		}
	}

	BPoint point;
	BPoint offset;

	if (msg->WasDropped()) {
		point = msg->DropPoint(&offset);
		point = mouseView->ConvertFromScreen(point - offset);
	}

	BLooper *looper = NULL;
	BHandler *handler = msg->ReturnAddress().Target(&looper);

	if (Looper() == looper) {
		BDragger *dragger = NULL;
		if (handler)
			dragger = dynamic_cast<BDragger*>(handler);

		BRect rect;
		if (dragger->fRelation == BDragger::TARGET_IS_CHILD)
			rect = dragger->Frame();
		else
			rect = dragger->fTarget->Frame();
		rect.OffsetTo(point);
		point = rect.LeftTop() + fShelf->AdjustReplicantBy(rect, msg);

		if (dragger->fRelation == BDragger::TARGET_IS_PARENT)
			dragger->fTarget->MoveTo(point);
		else if (dragger->fRelation == BDragger::TARGET_IS_CHILD)
			dragger->MoveTo(point);
		else {
			//TODO: TARGET_UNKNOWN/TARGET_SIBLING
		}

	} else {
		if (fShelf->_AddReplicant(msg, &point, fShelf->fGenCount++) == B_OK)
			Looper()->DetachCurrentMessage();
	}

	return B_SKIP_MESSAGE;
}

void TPanelWindowView::Draw( BRect updateRect )
{
	BRegion Region;
	Region.Include(updateRect);
	ConstrainClippingRegion(&Region);

	float w, h;

	w = Bounds().Width();
	h = Bounds().Height();

	SetHighColor( fColor2 );
	FillRect( BRect( 0, 0, h, h ) );
	FillRect( BRect( w-h, 0, w, h ) );

	FillRect( BRect( h/2, 0, w-(h/2), h/2) );
	FillRect( BRect( 0, h/2, w, h ) );

	SetHighColor( 196, 196, 176 );
	FillRect( BRect( 0, h - 2, w, h ) );

	fPanels.Lock();
	for ( int i=0; i<fPanels.CountItems(); i++ )
	{
		TInnerPanel *panel = fPanels.ItemAt(i);
		if ( panel->Frame().Intersects( updateRect ) )
		{
			BRect rect( panel->Frame() );
			if ( rect.left < updateRect.left )
				rect.left = updateRect.left;
			if ( rect.right > updateRect.right )
				rect.right = updateRect.right;
			if ( rect.top < updateRect.top )
				rect.top = updateRect.top;
			if ( rect.bottom > updateRect.bottom )
				rect.bottom = updateRect.bottom;
			panel->Draw(rect);
		}
	}
	fPanels.Unlock();

	if ( fDrawOuterFrame )
	{
		SetDrawingMode( B_OP_COPY );
		SetHighColor( fOuterFrameColor );

		BRect bounds = Bounds();
		StrokeLine( bounds.LeftTop(), bounds.RightTop() );
		StrokeLine( bounds.LeftTop(), bounds.LeftBottom() );
		StrokeLine( bounds.RightTop(), bounds.RightBottom() );
	}

	ConstrainClippingRegion(NULL);
}

static void testSetDrawingMode(BView *view, BRect frame)
{
	frame.InsetBy(2, 2);
	view->StrokeLine(frame.LeftTop(), frame.RightBottom());
	view->StrokeLine(frame.LeftBottom(), frame.RightTop());
	view->SetDrawingMode(B_OP_ALPHA);
	rgb_color color = kRed;
	color.alpha = 127;	
	view->SetHighColor(color);
	view->FillRect(frame, B_SOLID_HIGH);
}

void SetConfig(void *data, BMessage *config)
{
	GlSpectrumAnalyzerWindow *win=(GlSpectrumAnalyzerWindow *)data;
	BRect frame;
	if(B_OK==config->FindRect("frame",&frame))
	{
		win->Lock();
		win->MoveTo(frame.LeftTop());
		win->Unlock();
	}
}

void ContactItem::DrawItem(BView *owner, BRect itemRect, bool drawEverything)
{
	BString name = m_contact->FriendlyName();
	Status *status = m_contact->GetStatus();
	//draw status icon
	BBitmap *statusBitmap = status->GetStatusIcon();
	
	owner->SetDrawingMode(B_OP_OVER);
	float bitmapWidth = (statusBitmap->Bounds()).Width();
	BRect fillRect = itemRect;
	itemRect.left += bitmapWidth;

	//if selected
	if(IsSelected())
		owner->SetHighColor(ui_color(B_MENU_SELECTION_BACKGROUND_COLOR));
	else
		owner->SetHighColor(255,255,255);	
	owner->FillRect(fillRect);
	
	owner->SetDrawingMode(B_OP_ALPHA);
	if (statusBitmap)
		owner->DrawBitmap(statusBitmap, itemRect.LeftTop() + BPoint(0.0f,1.0f));
	
	//draw name(with emoticons)
	float textHeight = 12.0f;			
	BFont normal;
	owner->SetFont(&normal);
	owner->SetHighColor(0,0,0);
	owner->SetDrawingMode(B_OP_ALPHA);
	owner->DrawString(name.String(), itemRect.LeftTop() + BPoint(bitmapWidth + 5.0f, 1.0f + textHeight));
	//draw personal message, if available
	if (m_contact->HasPersonalMessage())
	{
		owner->DrawString(" - ");
		BFont italic;
		italic.SetFace(B_ITALIC_FACE); 
		owner->SetFont(&italic);	
		BString personalMessage = m_contact->PersonalMessage();
		owner->DrawString(personalMessage.String());
	}
}

void
BPrintJob::_RecurseView(BView* view, BPoint origin, BPicture* picture,
	BRect rect)
{
	ASSERT(picture != NULL);

	BRegion region;
	region.Set(BRect(rect.left, rect.top, rect.right, rect.bottom));
	view->fState->print_rect = rect;

	view->AppendToPicture(picture);
	view->PushState();
	view->SetOrigin(origin);
	view->ConstrainClippingRegion(&region);

	if (view->ViewColor() != B_TRANSPARENT_COLOR) {
		rgb_color highColor = view->HighColor();
		view->SetHighColor(view->ViewColor());
		view->FillRect(rect);
		view->SetHighColor(highColor);
	}

	view->fIsPrinting = true;
	view->Draw(rect);
	view->fIsPrinting = false;

	view->PopState();
	view->EndPicture();

	BView* child = view->ChildAt(0);
	while (child != NULL) {
		if ((child->Flags() & B_WILL_DRAW) && !child->IsHidden()) {
			BPoint leftTop(view->Bounds().LeftTop() + child->Frame().LeftTop());
			BRect printRect(rect.OffsetToCopy(rect.LeftTop() - leftTop)
				& child->Bounds());
			if (printRect.IsValid())
				_RecurseView(child, origin + leftTop, picture, printRect);
		}
		child = child->NextSibling();
	}

	if ((view->Flags() & B_DRAW_ON_CHILDREN) != 0) {
		view->AppendToPicture(picture);
		view->PushState();
		view->SetOrigin(origin);
		view->ConstrainClippingRegion(&region);
		view->fIsPrinting = true;
		view->DrawAfterChildren(rect);
		view->fIsPrinting = false;
		view->PopState();
		view->EndPicture();
	}
}

void TCuePosition::Outline(BRect outline)
{
	// Use the rect for the four corners
	Corner1(outline.LeftTop());
	Corner2(outline.RightTop());
	Corner3(outline.RightBottom());
	Corner4(outline.LeftBottom());

	// Set the registration in the center
	BPoint center(outline.left + outline.Width() / 2, outline.top +
			outline.Height() / 2);
	Registration(center);
}

void
RouteWindow::_constrainToScreen()
{
	D_INTERNAL(("RouteWindow::_constrainToScreen()\n"));

	BScreen screen(this);
	BRect screenRect = screen.Frame();
	BRect windowRect = Frame();

	// if the window is outside the screen rect
	// move it to the default position
	if (!screenRect.Intersects(windowRect)) {
		windowRect.OffsetTo(screenRect.LeftTop());
		MoveTo(windowRect.LeftTop());
		windowRect = Frame();
	}

	// if the window is larger than the screen rect
	// resize it to fit at each side
	if (!screenRect.Contains(windowRect)) {
		if (windowRect.left < screenRect.left) {
			windowRect.left = screenRect.left + 5.0;
			MoveTo(windowRect.LeftTop());
			windowRect = Frame();
		}
		if (windowRect.top < screenRect.top) {
			windowRect.top = screenRect.top + 5.0;
			MoveTo(windowRect.LeftTop());
			windowRect = Frame();
		}
		if (windowRect.right > screenRect.right) {
			windowRect.right = screenRect.right - 5.0;
		}
		if (windowRect.bottom > screenRect.bottom) {
			windowRect.bottom = screenRect.bottom - 5.0;
		}
		ResizeTo(windowRect.Width(), windowRect.Height());
	}
}