#include "blockview.h"
#include <qmath.h>
#include <QScrollBar>
#include <QGraphicsSceneMouseEvent>
#include <QApplication>
#include <QAction>
#include <QShortcut>
#include <QVector2D>


BlockView::BlockView(QWidget * parent): QGraphicsView(parent), tmp_bus(true) {
	_init();
}


BlockView::BlockView(QGraphicsScene * scene, QWidget * parent): QGraphicsView(scene, parent), tmp_bus(true) {
	_init();
}


BlockView::~BlockView() {
}


void BlockView::_init() {
	if (scene() == 0) {
		scene_ = new QGraphicsScene;
		setScene(scene_);
	}
	scene_ = scene();
	scene_->setSceneRect(-2500, -2500, 5000, 5000);
	scene_->setItemIndexMethod(QGraphicsScene::NoIndex);
	scene_->installEventFilter(this);
	scene_->addItem(&tmp_bus);
	widget_thumb.setParent(this);
	//widget_thumb.setAutoFillBackground(true);
	//widget_thumb.setStyleSheet("background-color: rgb(255, 0, 0);");
	widget_thumb.installEventFilter(this);
	widget_thumb.setMouseTracking(true);
	widget_thumb.show();
	widget_thumb.setWindowOpacity(0.);
	thumb_anim.setTargetObject(this);
	thumb_anim.setPropertyName("_thumb");
	thumb_anim.setEasingCurve(QEasingCurve::InCubic);
	connect(scene_, SIGNAL(sceneRectChanged(QRectF)), this, SLOT(adjustThumb()));
	centerOn(scene_->sceneRect().center());
	setCacheMode(CacheBackground);
	setTransformationAnchor(QGraphicsView::AnchorUnderMouse);
	setResizeAnchor(QGraphicsView::AnchorUnderMouse);
	setRenderHint(QPainter::Antialiasing);
	setRenderHint(QPainter::SmoothPixmapTransform);
	setMouseTracking(true);
	grid_visible = grid_snap = pm_connect = navigation = m_connect = m_trace_with_buses = minimap = true;
	mm_drag = moved = new_branch = new_bus = mm_cancel = iconnect = mm_copy = m_pin_mc = mm_thumb = false;
	match_bus = bus_from = 0;
	mm_ci = 0;
	grid_step = 10.;
	grid_points = 1;
	grid_pen = QPen(Qt::lightGray, 1, Qt::NoPen);
	thumb_hide_delay = 500;
	smode = BlockView::MultiSelection;
	cur_scl = thumb_scl = 1.;
	_talpha = 0.;
	thumb_size = QSizeF(200, 200);
	sel_rect.setZValue(999.);
	sel_rect.hide();
	QColor sc = palette().color(QPalette::Highlight);
	sc.setAlphaF(0.6);
	QPen pen(sc.darker(200), 2., Qt::DotLine);
	pen.setCosmetic(true);
	sel_rect.setPen(pen);
	sc.setAlphaF(0.2);
	sel_rect.setBrush(QBrush(sc));
	
	/*AlignedTextItem * ti = new AlignedTextItem("This is text!");
	ti->setFlag(QGraphicsItem::ItemIsSelectable, true);
	ti->setFlag(QGraphicsItem::ItemIsMovable, true);
	addItem(ti);
	ti->setAlignment(Qt::AlignBottom | Qt::AlignLeft);
	ti->setText("text\nt");
	QGraphicsSimpleTextItem * t__ = new QGraphicsSimpleTextItem("TEXT");
	t__->setFlags(QGraphicsItem::ItemIsSelectable);
	addItem(t__);
	addItem(new QGraphicsLineItem(0, -50, 0, 50));
	addItem(new QGraphicsLineItem(-50, 0, 50, 0));
	
	for (int i = 0; i < 5; ++i) {
		BlockItem * it = new BlockItem();
		it->setPos(i*150, i*20);
		it->addPin(new BlockItemPin());
		if (i == 2)
			it->setFlags(QGraphicsItem::ItemIsSelectable);
		scene_->addItem(it);
	}
		QGraphicsItem * it = new QGraphicsRectItem(0, 0, 200, 100);
		it->setFlags(QGraphicsItem::ItemIsSelectable | QGraphicsItem::ItemIsMovable);
		it->setData(1001, true);
		scene_->addItem(it);
	
	BlockBusItem * bus = new BlockBusItem();
	bus->setImages(QImage("icons/bus_twin.png"), QImage("icons/bus_end_rj45.png"));
	bus->setEndpointsNumber(3);
	bus->setBusType(1);
	bus->appendPoint(QPointF(20, 40));
	bus->appendPoint(QPointF(150, -20));
	bus->appendPoint(QPointF(40, -80));
	//bus->setImages(QImage("icons/bus_twin.png"), QImage("icons/bus_end_rj45.png"));
	addItem(bus);
	bus = new BlockBusItem();
	bus->appendPoint(QPointF(-20, 40));
	bus->appendPoint(QPointF(100, -30));
	bus->appendPoint(QPointF(20, -60));
	addItem(bus);*/
}


void BlockView::_updateBack() {
	setCacheMode(CacheNone);
	invalidateScene();
	setCacheMode(CacheBackground);
}


bool BlockView::eventFilter(QObject * o, QEvent * e) {
	if (o == &widget_thumb) {
		QMouseEvent * me = (QMouseEvent*)e;
		switch (e->type()) {
		case QEvent::Paint:
			drawThumb();
			return true;
		case QEvent::Enter:
			thumbShow();
			break;
		case QEvent::Leave:
			restartTimer(timer_thumb, thumb_hide_delay);
			break;
		case QEvent::MouseButtonPress:
			thumb_press = me->pos();
			widget_thumb.setCursor(Qt::ClosedHandCursor);
			if (!thumb_vr.contains(thumb_press)) {
				thumb_vr.moveCenter(thumb_press);
				scrollFromThumb();
			}
			break;
		case QEvent::MouseButtonRelease:
			widget_thumb.setCursor(Qt::OpenHandCursor);
			break;
		case QEvent::MouseMove:
			if (me->buttons() == 0)
				widget_thumb.setCursor(thumb_vr.contains(me->pos()) ? Qt::OpenHandCursor : Qt::CrossCursor);
			if (me->buttons().testFlag(Qt::LeftButton)) {
				thumb_vr.translate(me->pos() - thumb_press);
				scrollFromThumb();
				thumb_press = me->pos();
			}
			break;
		default: break;
		}
		return QGraphicsView::eventFilter(o, e);
	}
	if (o == scene_) {
		QGraphicsSceneMouseEvent * me = (QGraphicsSceneMouseEvent*)e;
		QList<QGraphicsItem * > mil;
		QPointF mdp;
		bool fmm_drag = false;
		int btncnt = 0;
		switch (e->type()) {
		case QEvent::GraphicsSceneMouseDoubleClick:
			mil = scene_->items(scene_point);
			foreach (QGraphicsItem * i, mil) {
				if (i->data(1006) == "item") {
					emit blockDoubleClicked((BlockItem * )i);
					break;
				}
				if (i->data(1005) == "connection") {
					if (qgraphicsitem_cast<BlockBusItem*>(i)->isBusSelected()) {
						emit busDoubleClicked(qgraphicsitem_cast<BlockBusItem*>(i));
						break;
					}
				}
			}
			//return true;
			break;
		/*case QEvent::GraphicsSceneHoverMove:
			mil = scene_->items(scene_point);
			mm_ci = (mil.isEmpty() ? 0 : mil.front());
			if (mm_ci != 0) {
				while (mm_ci->data(1005).toString() == "connection") {
					if (qgraphicsitem_cast<BlockBusItem*>(mm_ci))
						if (qgraphicsitem_cast<BlockBusItem*>(mm_ci)->isBusSelected())
							break;
					if (mil.size() > 1) {
						mm_ci = mil[1];
						mil.pop_front();
					} else {
						mm_ci = 0;
						break;
					}
				}
			}
			break;*/
		case QEvent::GraphicsSceneMousePress:
			if (mm_ci != 0)
				if (mm_ci->data(1008).toBool())
					break;
			//qDebug() << "press";
			if (me->buttons().testFlag(Qt::LeftButton)) btncnt++;
			if (me->buttons().testFlag(Qt::RightButton)) btncnt++;
			if (me->buttons().testFlag(Qt::MidButton)) btncnt++;
			mm_cancel = btncnt >= 2;
			match_bus = bus_from = 0;
			copy_dp = QPointF();
			//qDebug() << mm_cancel << mm_copy << mm_drag << new_branch << new_bus;
			if (mm_copy && mm_cancel) {
				qDeleteAll(copy_items);
				copy_items.clear();
				mm_copy = moved = false;
				unsetCursor();
			}
			if (new_bus && mm_cancel) {
				new_bus = false;
				unmarkPins(true);
				reconnectAll();
				tmp_bus.hide();
				tmp_bus.clear();
			}
			if (new_branch && mm_cancel) {
				new_branch = false;
				tmp_bus.hide();
				tmp_bus.clear();
			}
			if (moved && mm_cancel) {
				moved = false;
				restoreSelState();
				tmp_bus.hide();
				tmp_bus.clear();
			}
			if (mm_cancel) return true;
			mm_mods = me->modifiers();
			mm_drag = moved = false;
			screen_point = me->screenPos();
			scene_point = me->scenePos();
			if (me->button() == Qt::MidButton) {
				thumbShow();
				restartTimer(timer_thumb, thumb_hide_delay);
				return true;
			}
			mil = scene_->items(scene_point);
			mm_ci = (mil.isEmpty() ? 0 : mil.front());
			if (mil.isEmpty()) return true;
			if (mm_ci != 0) {
				//qDebug() << mm_ci->data(1002) << mm_ci->data(1003) << mm_ci->data(1005);
				if (mm_ci->data(1008).toBool())
					break;
				while (mm_ci->data(1005).toString() == "connection") {
					if (qgraphicsitem_cast<BlockBusItem*>(mm_ci))
						if (qgraphicsitem_cast<BlockBusItem*>(mm_ci)->isBusSelected())
							break;
					if (mil.size() > 1) {
						mm_ci = mil[1];
						mil.pop_front();
					} else {
						mm_ci = 0;
						break;
					}
				}
				if (mm_ci->data(1003).toBool()) {
					if (mil.size() > 1) {
						mm_ci = mil[1];
						mil.pop_front();
						if (mm_ci->data(1003).toBool())
							if (mil.size() > 1)
								mm_ci = mil[1];
					} else
						mm_ci = 0;
				}
				if (mm_ci->data(1002).toBool()) {
					while (mm_ci->parentItem() != 0)
						mm_ci = mm_ci->parentItem();
					return true;
				}
			}
			if (mm_ci) {
				if (mm_ci->data(1004) == "pin" && m_connect) {
					if (qgraphicsitem_cast<BlockItemPin*>(mm_ci)->state() == BlockItemPin::Hover) {
						trace_from = mm_ci->scenePos();
						qgraphicsitem_cast<BlockItemPin*>(mm_ci)->clearStateStack();
						tmp_bus.setBusType(qgraphicsitem_cast<BlockItemPin*>(mm_ci)->busType());
						tmp_bus.setEndpointsNumber(3);
						tmp_bus.clear();
						tmp_bus.show();
						new_bus = true;
						markPins(tmp_bus.busType());
						if (qgraphicsitem_cast<BlockItemPin*>(mm_ci)->alignment() == Qt::AlignLeft ||
							qgraphicsitem_cast<BlockItemPin*>(mm_ci)->alignment() == Qt::AlignRight)
							wavetrace.setPreferredDirection(BlockViewWavetrace::Horizontal);
						else
							wavetrace.setPreferredDirection(BlockViewWavetrace::Vertical);
					}
				}
			}
			cur_scl = qSqrt(transform().determinant());
			//qDebug() << mm_ci;
			//return true;
			break;
		case QEvent::GraphicsSceneMouseMove:
			//qDebug() << "move" << (mm_ci != 0 ? mm_ci : 0);
			if (mm_ci)
				if (mm_ci->data(1008).toBool())
					break;
			if (mm_cancel) return true;
			if (me->buttons().testFlag(Qt::LeftButton)) {
				if (!mm_drag) {
					if ((screen_point - me->screenPos()).manhattanLength() >= QApplication::startDragDistance())
						mm_drag = fmm_drag = true;
				} else {
					if (tmp_bus.isVisible()) {
						if (new_branch) {
							matchBus();
							break;
						}
						trace(trace_from, me->scenePos(), &tmp_bus);
						matchBus();
					}
				}
				if (mm_mods.testFlag(Qt::ShiftModifier)) {
					if (fmm_drag) {
						fmm_drag = false;
						if (mm_ci) {
							if ((mm_ci->data(1006) == "item")) {
								if (!mm_ci->isSelected() && sel_items.isEmpty()) {
									clearSelection();
									mm_ci->setSelected(true);
								}
							} else {
								mm_ci = 0;
								break;
							}
						} else {
							break;
						}
						sel_items = scene_->selectedItems();
						foreach (QGraphicsItem * i, sel_items) {
							if (i->data(1006) == "item") {
								//qDebug() << "copy";
								BlockItem * ti = qgraphicsitem_cast<BlockItem*>(i)->copy();
								ti->g_main.setPen(QPen(ti->g_main.pen().color(), ti->g_main.pen().widthF(), Qt::DashLine));
								QColor bc = ti->g_main.brush().color(); bc.setAlphaF(bc.alphaF() * 0.5);
								ti->g_main.setBrush(bc);
								copy_items << ti;
								scene_->addItem(ti);
							}
						}
						mm_copy = true;
						setCursor(Qt::DragCopyCursor);
					}
				} else {
					if (smode == BlockView::SingleSelection) {
						if (fmm_drag) {
							clearSelection();
							if (mm_ci != 0) {
								mm_ci->setSelected(true);
							}
							saveSelState();
						}
					}
					if (smode == BlockView::MultiSelection) {
						sel_rect.setRect(QRectF(scene_point, me->scenePos()).normalized());
						if (fmm_drag) {
							if (mm_ci == 0) {
								scene_->addItem(&sel_rect);
								sel_rect.show();
								if (!mm_mods.testFlag(Qt::ControlModifier))
									clearSelection();
							} else {
								if (!mm_mods.testFlag(Qt::ControlModifier) && !mm_ci->isSelected()) {
									clearSelection();
									mm_ci->setSelected(true);
								}
							}
							saveSelState();
							if (mm_ci != 0)
								if (!sel_items.contains(mm_ci))
									mm_ci = 0;
						}
					}
				}
				if (sel_rect.isVisible())
					applySelRect(me);
				else {
					if (mm_drag && mm_ci != 0) {
						mdp = (me->scenePos() - scene_point);
						if (grid_snap)
							mdp = quantize(mdp, grid_step);
						if (!mdp.isNull()) {
							scene_point += mdp;
							copy_dp += mdp;
						}
						if (mm_copy) {
							if (!mdp.isNull())
								moved = true;
							foreach (QGraphicsItem * i, copy_items)
								i->setPos(i->pos() + mdp);
						}
						if (!mm_mods.testFlag(Qt::ControlModifier) && !mm_mods.testFlag(Qt::ShiftModifier)) {
							if (!mdp.isNull())
								moved = true;
							foreach (QGraphicsItem * i, sel_items)
								if (i->flags().testFlag(QGraphicsItem::ItemIsMovable))
									i->setPos(i->pos() + mdp);
							moveBuses(sel_items, mdp);
							setCursor(Qt::ClosedHandCursor);
						}
						return true;
					}
				}
				if (mm_ci)
					if (mm_ci->data(1100).toBool())
						return true;
			}
			if (me->modifiers().testFlag(Qt::ControlModifier) && me->buttons() != 0 && mm_ci == 0)
				return true;
			//qDebug() << "scene mouse";
			//return true;
			break;
		case QEvent::GraphicsSceneMouseRelease:
			if (me->buttons().testFlag(Qt::LeftButton)) btncnt++;
			if (me->buttons().testFlag(Qt::RightButton)) btncnt++;
			if (me->buttons().testFlag(Qt::MidButton)) btncnt++;
			mm_cancel = btncnt > 0;
			if (mm_cancel || me->button() == Qt::MidButton) {
				mm_ci = 0;
				return true;
			}
			if (mm_ci)
				if (mm_ci->data(1008).toBool()) {
					mm_ci = 0;
					break;
				}
			if (mm_copy) {
				QList<QGraphicsItem*> ai;
				blockSignals(true);
				if (moved) {
					QList<BlockItem*> ci;
					foreach (QGraphicsItem * b, sel_items)
						if (b->data(1006) == "item") {
							ci << qgraphicsitem_cast<BlockItem*>(b);
							ai << qgraphicsitem_cast<QGraphicsItem*>(b);
						}
					copyBlocks(ci, copy_dp);
				}
				qDeleteAll(copy_items);
				copy_items.clear();
				blockSignals(false);
				if (moved) {
					moved = false;
					reconnectAll();
					emit actionEvent(BlockItemBase::BlockCopy, ai);
				}
			}
			if (new_branch) {
				tmp_bus.hide();
			}
			if (moved && pm_connect) {
				QList<QGraphicsItem*> ci;
				foreach (QGraphicsItem * b, sel_items)
					if (b->data(1006) == "item")
						ci << qgraphicsitem_cast<QGraphicsItem*>(b);
				emit actionEvent(BlockItemBase::BlockMove, ci);
				reconnectAll();
			}
			moved = mm_copy = false;
			if (tmp_bus.isVisible()) {
				//qDebug() << "!!!";
				if (match_bus == 0) {
					BlockBusItem * nb = new BlockBusItem(tmp_bus);
					loadBus(nb);
					addItem(nb);
				} else {
					if (connectTmpToBus(match_bus)) {
						emit actionEvent(BlockItemBase::BusAdd, QList<QGraphicsItem*>() << match_bus);
						emit connectionsChanged();
					}
				}
				unmarkPins();
				tmp_bus.hide();
				tmp_bus.clear();
				reconnectAll();
			}
			clearBusStates();
			if (!mm_drag) {
				switch (smode) {
				case SingleSelection:
					clearSelection();
					if (mm_ci)
						mm_ci->setSelected(true);
					break;
				case MultiSelection:
					if (mm_ci == 0 || !me->modifiers().testFlag(Qt::ControlModifier)) {
						clearSelection();
						if (mm_ci)
							mm_ci->setSelected(true);
					} else {
						if (mm_ci != 0) {
							if (me->modifiers().testFlag(Qt::ControlModifier)) {
								if (mm_ci->data(1006) == "item")
									mm_ci->setSelected(!mm_ci->isSelected());
							} else
								mm_ci->setSelected(true);
						}
					}
					break;
				default:
					clearSelection();
					break;
				}
			}
			sel_rect.hide();
			if (sel_rect.scene())
				scene_->removeItem(&sel_rect);
			mm_drag = false;
			mm_ci = 0;
			unsetCursor();
			break;
		default: break;
		}
	}
	return QGraphicsView::eventFilter(o, e);
}


void BlockView::stopTimer(int & tid) {
	if (tid > 0) killTimer(tid);
	tid = 0;
}


void BlockView::restartTimer(int & tid, int msecs) {
	stopTimer(tid);
	tid = startTimer(msecs);
}


void BlockView::timerEvent(QTimerEvent * e) {
	if (e->timerId() == timer_thumb) {
		thumbHide();
		stopTimer(timer_thumb);
		return;
	}
	QGraphicsView::timerEvent(e);
}


void BlockView::wheelEvent(QWheelEvent * event) {
	if (!navigation) return;
	if (event->modifiers().testFlag(Qt::ControlModifier)) {
		double scl = 1. + event->delta() / 500.;
		scale(scl, scl);
		return;
	}
	QGraphicsView::wheelEvent(event);
}


void BlockView::mousePressEvent(QMouseEvent * event) {
	press_point = event->pos();
	QGraphicsView::mousePressEvent(event);
}


void BlockView::mouseMoveEvent(QMouseEvent * event) {
	if (navigation) {
		if (event->buttons().testFlag(Qt::MidButton)) {
			QPoint dp = (press_point - event->pos());
			horizontalScrollBar()->setValue(horizontalScrollBar()->value() + dp.x());
			verticalScrollBar()->setValue(verticalScrollBar()->value() + dp.y());
			press_point = event->pos();
			return;
		}
	}
	QGraphicsView::mouseMoveEvent(event);
}


void BlockView::keyPressEvent(QKeyEvent * e) {
	if (e->key() == Qt::Key_Shift) {
		if (tmp_bus.isVisible()) {
			wavetrace.setPreferredDirection((BlockViewWavetrace::Direction)(1 - wavetrace.preferredDirection()));
			trace(last_trace_from, trace_to, &tmp_bus);
		}
		return;
	}
	QGraphicsView::keyPressEvent(e);
}


void BlockView::resizeEvent(QResizeEvent * event) {
	QGraphicsView::resizeEvent(event);
	adjustThumb();
}


void BlockView::scrollContentsBy(int dx, int dy) {
	QGraphicsView::scrollContentsBy(dx, dy);
	if (isHidden()) return;
	thumbShow();
	restartTimer(timer_thumb, thumb_hide_delay);
	QMetaObject::invokeMethod(&widget_thumb, "repaint", Qt::QueuedConnection);
}


void BlockView::drawBackground(QPainter * painter, const QRectF & rect) {
	QGraphicsView::drawBackground(painter, rect);
	if (mm_thumb) return;
	float rx, ry, sx = grid_step, sy = grid_step;
	double scl = qRound(1. / qSqrt(transform().determinant()));
	painter->eraseRect(rect);
	painter->setRenderHint(QPainter::Antialiasing, false);
	if (scl > 0.) {
		sx *= scl;
		sy *= scl;
	}
	if (!grid_visible) return;
	rx = quantize(rect.left(), sx);
	ry = quantize(rect.top(), sy);
	bool gp = grid_points > 0.5;
	if (gp) {
		QPen pp(grid_pen.color(), grid_points, Qt::SolidLine, Qt::RoundCap, Qt::RoundJoin);
		pp.setCosmetic(true);
		painter->setPen(pp);
		for(int i = 0; i < qCeil(rect.width() / sx) + 1; ++i)
			for(int j = 0; j < qCeil(rect.height() / sy) + 1; ++j)
				painter->drawPoint(rx + i * sx, ry + j * sy);
	}
	if (grid_pen.style() == Qt::NoPen) return;
	painter->setPen(grid_pen);
	for(int i = 0; i < qCeil(rect.width() / sx) + 1; ++i) {
		double cx = rx + i * sx;
		painter->drawLine(cx, ry, cx, ry + rect.height());
	}
	for(int j = 0; j < qCeil(rect.height() / sy) + 1; ++j) {
		double cy = ry + j * sy;
		painter->drawLine(rx, cy, rx + rect.width(), cy);
	}
}


void BlockView::scrollFromThumb() {
	QRect r(thumb_vr);
	double scl(thumb_scl);
	horizontalScrollBar()->setValue(r.x() / scl + horizontalScrollBar()->minimum());
	verticalScrollBar()->setValue(r.y() / scl + verticalScrollBar()->minimum());
}


void BlockView::drawThumb() {
	if (!minimap) return;
	QPainter p(&widget_thumb);
	QRect wr = widget_thumb.rect().adjusted(0, 0, -1, -1);
	QSizeF sr = sceneRect().size(), tr;
	if (sr.width() >= sr.height())
		thumb_scl = thumb_size.width() / sr.width();
	else
		thumb_scl = thumb_size.height() / sr.height();
	tr = sr * thumb_scl;
	cur_scl = qSqrt(transform().determinant());
	thumb_scl /= cur_scl;
	QSizeF vs(size().width() - verticalScrollBar()->width(), size().height() - horizontalScrollBar()->height());
	QRectF vr(QPointF(horizontalScrollBar()->value() - horizontalScrollBar()->minimum(),
					  verticalScrollBar()->value() - verticalScrollBar()->minimum()) * thumb_scl, vs * thumb_scl);
	vr.adjust(0, 0, -1, -1);
	
	p.setBrush(Qt::lightGray);
	p.setOpacity(0.5 * _talpha);
	p.drawRect(wr);
	p.drawImage(0, 0, im_scene);
	p.setBrush(Qt::NoBrush);
	p.drawRect(wr);
	p.setBrush(Qt::white);
	p.setRenderHint(QPainter::Antialiasing);
	p.drawRect(vr);
	thumb_sr = wr;
	thumb_vr = vr.toRect();
}


void BlockView::drawSceneThumb() {
	if (!minimap) return;
	QRect wr = widget_thumb.rect().adjusted(0, 0, -1, -1);
	im_scene = QImage(wr.size(), QImage::Format_ARGB32);
	im_scene.fill(Qt::transparent);
	QPainter p(&im_scene);
	p.setRenderHint(QPainter::Antialiasing);
	mm_thumb = true;
	scene_->render(&p, im_scene.rect());
	mm_thumb = false;
}


void BlockView::thumbHide() {
	if (!minimap) {
		widget_thumb.hide();
		return;
	}
	if (QApplication::widgetAt(QCursor::pos()) == &widget_thumb) return;
	thumb_anim.stop();
	thumb_anim.setDuration(1000);
	thumb_anim.setStartValue(_thumb());
	thumb_anim.setEndValue(0.);
	thumb_anim.start();
	//qDebug() << "hide" << thumb_anim.startValue() << thumb_anim.endValue();
	//widget_thumb.hide();
}


void BlockView::thumbShow() {
	if (!minimap) return;
	if (widget_thumb.isHidden() || (_talpha < 0.1)) drawSceneThumb();
	thumb_anim.stop();
	/*thumb_anim.setDuration(100);
	thumb_anim.setStartValue(_thumb());
	thumb_anim.setEndValue(1.);
	thumb_anim.start();*/
	_setThumb(1.);
	//qDebug() << "show" << thumb_anim.startValue() << thumb_anim.endValue();
	//widget_thumb.show();
}


void BlockView::clearSelection() {
	sel_items.clear();
	QList<QGraphicsItem*> gi = scene_->items();
	foreach (QGraphicsItem * i, gi)
		i->setSelected(false);
}


void BlockView::addItem(QGraphicsItem * item) {
	scene_->addItem(item);
	applyGridStep();
	if (item->data(1005) == "connection") {
		loadBus(qgraphicsitem_cast<BlockBusItem*>(item));
		connect((BlockBusItem*)item, SIGNAL(destroyed(QObject*)), this, SLOT(removedBus(QObject*)), Qt::UniqueConnection);
		emit actionEvent(BlockItemBase::BusAdd, QList<QGraphicsItem*>() << item);
		emit connectionsChanged();
		return;
	}
	if (item->data(1006) == "item") {
		connect((BlockItem*)item, SIGNAL(destroyed(QObject*)), this, SLOT(removedBlock(QObject*)), Qt::UniqueConnection);
		emit actionEvent(BlockItemBase::BlockAdd, QList<QGraphicsItem*>() << item);
		return;
	}
	item->setData(1009, "decor");
}


QList<BlockBusItem * > BlockView::buses() const {
	QList<BlockBusItem * > ret;
	QList<QGraphicsItem*> gi = scene_->items();
	foreach (QGraphicsItem * i, gi)
		if (i->data(1005) == "connection")
			ret << qgraphicsitem_cast<BlockBusItem*>(i);
	return ret;
}


QList<BlockBusItem * > BlockView::wrongConnectedBuses() const {
	QList<BlockBusItem * > sl = buses(), ret;
	QList<BlockItem * > bl = blocks();
	foreach (BlockItem * b, bl) {
		QVector<BlockItemPin * > pins = b->pins();
		foreach (BlockItemPin * p, pins)
			if (p->state() == BlockItemPin::Reject) {
				QPointF pp = p->scenePos();
				foreach (BlockBusItem * s, sl)
					if (s->pol.contains(pp))
						if (!ret.contains(s))
							ret << s;
			}
	}
	return ret;
}


QList<BlockItem * > BlockView::blocks() const {
	QList<BlockItem * > ret;
	QList<QGraphicsItem*> gi = scene_->items();
	foreach (QGraphicsItem * i, gi)
		if (i->data(1006) == "item")
			ret << qgraphicsitem_cast<BlockItem*>(i);
	return ret;
}


QList<QGraphicsItem * > BlockView::decors() const {
	QList<QGraphicsItem*> ret, gi = scene_->items();
	foreach (QGraphicsItem * i, gi)
		if ((i->data(1009) == "decor") && !i->data(1008).toBool() && (i->parentItem() == 0) && (i != &sel_rect) && (i != &tmp_bus))
			ret << i;
	return ret;
}


BlockBusItem * BlockView::connectionBus(BlockItem * b0, BlockItem * b1) const {
	QList<BlockBusItem * > cbl = connectionBuses(b0, b1);
	if (cbl.isEmpty()) return 0;
	return cbl.front();
}


QList<BlockBusItem * > BlockView::connectionBuses(BlockItem * b0, BlockItem * b1) const {
	if (!b0 || !b1) return QList<BlockBusItem * >();
	QSet<BlockBusItem * > bs0 = b0->connectedBuses().toSet(), bs1 = b1->connectedBuses().toSet();
	return (bs0 & bs1).values();
}


bool BlockView::connectPins(BlockItemPin * p0, BlockItemPin * p1) {
	if (!p0 || !p1) return false;
	if (p0 == p1) return false;
	if (p0->busType() != p1->busType()) return false;
	QList<BlockBusItem * > bl0 = p0->connectedBuses(), bl1 = p1->connectedBuses();
	if (!(bl0.toSet() & bl1.toSet()).isEmpty()) return true;
	BlockBusItem * nb = new BlockBusItem();
	nb->setBusType(p0->busType());
	//nb->setEndpointsNumber(3);
	loadBus(nb);
	if (!bl0.isEmpty() && !bl1.isEmpty()) { // connect two existing buses
	} else {
		if ((bl0.isEmpty() && !bl1.isEmpty()) || (bl1.isEmpty() && !bl0.isEmpty())) { // connect empty pin to existing bus
			BlockItemPin * ep = 0;
			BlockBusItem * eb = 0;
			if (bl0.isEmpty()) {ep = p0; eb = bl1[0];}
			else {ep = p1; eb = bl0[0];}
			double md = -1; int mi = -1;
			QPointF sp = ep->scenePos();
			if (eb->pol.size() == 2) {
				eb->selSegment = 0;
				eb->addPoint((eb->pol[0] + eb->pol[1]) / 2.);
				eb->selPoint = -1;
				mi = 2;
			} else {
				for (int i = 0; i < eb->pol.size(); ++i) {
					if (eb->ends.contains(i)) continue;
					double cd = QVector2D(sp - eb->pol[i]).lengthSquared();
					if (md < 0 || md > cd) {
						md = cd;
						mi = i;
					}
				}
			}
			if (mi < 0) {
				return false;
			}
			trace(ep->scenePos(), eb->pol[mi], nb);
			if (nb->pol.size() < 2) {
				delete nb;
				return false;
			}
			nb->pol.pop_back();
			int lp = eb->pol.size();
			eb->pol << nb->pol;
			for (int i = 0; i < nb->pol.size() - 1; ++i)
				eb->segments << QPair<int, int>(lp + i, lp + i + 1);
			eb->segments << QPair<int, int>(mi, lp + nb->pol.size() - 1);
			eb->updateGeometry();
			delete nb;
		} else { // connect two empty pins
			trace(p0->scenePos(), p1->scenePos(), nb);
			if (nb->pol.isEmpty()) {
				delete nb;
				return false;
			}
			addItem(nb);
		}
	}
	reconnectAll();
	emit actionEvent(BlockItemBase::BusAdd, QList<QGraphicsItem*>() << nb);
	emit connectionsChanged();
	return true;
}


void BlockView::restoreSelState() {
	foreach (QGraphicsItem * i, sel_items) {
		i->setPos(i->data(1001).toPointF());
	}
	QList<QGraphicsItem*> gi = scene_->items();
	foreach (QGraphicsItem * i, gi)
		if (i->data(1005) == "connection") {
			BlockBusItem * bi = qgraphicsitem_cast<BlockBusItem*>(i);
			bi->pol = bi->bpol;
			bi->prepareGeometryChange();
		}
}


void BlockView::saveSelState() {
	QList<QGraphicsItem*> gi = scene_->items();
	sel_items = scene_->selectedItems();
	foreach (QGraphicsItem * i, gi) {
		i->setData(1000, i->isSelected());
		i->setData(1001, i->pos());
		if (i->data(1005) == "connection")
			qgraphicsitem_cast<BlockBusItem*>(i)->bpol = qgraphicsitem_cast<BlockBusItem*>(i)->pol;
	}
}


void BlockView::applySelRect(QGraphicsSceneMouseEvent * me) {
	QList<QGraphicsItem*> ci = sel_rect.collidingItems(Qt::IntersectsItemBoundingRect);
	QList<QGraphicsItem*> gi = scene_->items();
	bool add = me->modifiers().testFlag(Qt::ControlModifier);
	if (!add) clearSelection();
	else {
		foreach (QGraphicsItem * i, gi)
			i->setSelected(i->data(1000).toBool());
	}
	foreach (QGraphicsItem * i, ci) {
		i->setSelected(!i->isSelected());
	}
}


void BlockView::applyGridStep() {
	QList<QGraphicsItem*> gi = scene_->items();
	foreach (QGraphicsItem * i, gi)
		if (i->type() == QGraphicsItem::UserType + 2)
			qgraphicsitem_cast<BlockBusItem*>(i)->setGridStep(grid_step);
}


void BlockView::trace(QPointF scene_pos_from, QPointF scene_pos_to, BlockBusItem * bus) {
	last_trace_from = scene_pos_from;
	trace_to = scene_pos_to;
	QRect sr = scene_->sceneRect().toRect();
	int dx = sr.left() / grid_step, dy = sr.top() / grid_step;
	QPoint dp(-dx, -dy), qpt = quantize(scene_pos_to, grid_step).toPoint() / grid_step + dp;
	//qDebug() << dp;
	QTime tm;
	tm.restart();
	wavetrace.resize(sr.size() / grid_step);
	wavetrace.fill(BlockViewWavetrace::Empty);
	QList<QGraphicsItem*> gi = scene_->items();
	foreach (QGraphicsItem * i, gi)
		if (i->data(1006) == "item") {
			QRect ir = i->mapRectToScene(i->boundingRect()).toRect().normalized();
			wavetrace.fill(QRect(ir.topLeft() / grid_step + dp, ir.bottomRight() / grid_step + dp), BlockViewWavetrace::Blocked);
			QVector<BlockItemPin * > pins = qgraphicsitem_cast<BlockItem * >(i)->pins();
			foreach (BlockItemPin * p, pins) {
				if (p->busType() == bus->busType())
					wavetrace.fill(quantize(p->scenePos(), grid_step).toPoint() / grid_step + dp, BlockViewWavetrace::Empty);
			}
		}
	if (m_trace_with_buses) {
		foreach (QGraphicsItem * i, gi)
			if (i->data(1005) == "connection") {
				BlockBusItem * b = qgraphicsitem_cast<BlockBusItem * >(i);
				if (!b) continue;
				for (int s = 0; s < b->segments.size(); ++s) {
					QPointF p0 = b->pol[b->segments[s].first], p1 = b->pol[b->segments[s].second], cp = p0;
					double sx(0.), sy(0.), dx = qAbs(p1.x() - p0.x()), dy = qAbs(p1.y() - p0.y());
					double signx = (p1.x() >= p0.x() ? 1. : -1.), signy = (p1.y() >= p0.y() ? 1. : -1.);
					int steps(0);
					if ((dx + dy) < grid_step) continue;
					if (dx >= dy) { // by x
						sx = grid_step;
						sy = sx * dy / dx;
						steps = qRound(dx / grid_step);
					} else {
						sy = grid_step;
						sx = sy * dx / dy;
						steps = qRound(dy / grid_step);
					}
					sx *= signx;
					sy *= signy;
					//qDebug() << "fill" << p0 << "->" << p1 << "in" << steps << sx << sy;
					for (int j = 0; j < steps; ++j) {
						QPoint tp = quantize(cp, grid_step).toPoint() / grid_step + dp;
						if (tp != qpt)
							wavetrace.fill(tp, BlockViewWavetrace::Blocked);
						//qDebug() << " set" << cp;
						cp += QPointF(sx, sy);
					}
				}
			}
	}
	bus->clear();
	if (wavetrace.trace(quantize(scene_pos_from, grid_step).toPoint() / grid_step + dp, qpt)) {
		wavetrace.gatherPath();
		foreach (const QPoint & p, wavetrace.path()) {
			bus->appendPoint((p - dp) * grid_step);
		}
	}
	//qDebug() << quantize(scene_pos_from, grid_step).toPoint() / grid_step + dp << qpt;
	scene_->update();
}


void BlockView::clearBusStates() {
	QList<QGraphicsItem * > gi = scene_->items();
	foreach (QGraphicsItem * i, gi)
		if (i->data(1005) == "connection") {
			BlockBusItem * b = qgraphicsitem_cast<BlockBusItem*>(i);
			b->clearBusState();
			if (i != bus_from && i != match_bus)
				b->selPoint = b->selSegment = -1;
		}
}


void BlockView::matchBus() {
	match_bus = 0;
	bool bv = tmp_bus.isVisible();
	QList<QGraphicsItem * > gi = scene_->items();
	QList<BlockBusItem * > buses;
	QList<BlockItem * > blockl;
	int sp = -1, ss = -1;
	QPointF point;
	iconnect = false;
	if (!tmp_bus.pol.isEmpty())
		point = tmp_bus.pol.back();
	foreach (QGraphicsItem * i, gi) {
		if (i != bus_from) {
			if (i->data(1005) == "connection")
				buses << qgraphicsitem_cast<BlockBusItem*>(i);
			if (i->data(1006) == "item")
				blockl << qgraphicsitem_cast<BlockItem*>(i);
		}
	}
	foreach (BlockBusItem * b, buses) {
		b->clearBusState();
		b->selPoint = b->selSegment = -1;
	}
	if (!bv) return;
	BlockBusItem * b(0);
	if (m_pin_mc) {
		foreach (BlockItem * b_, blockl)
			foreach (BlockItemPin * p_, b_->pins())
				if (p_->scenePos() == point) {
					
					return;
				}
	}
	//qDebug() << "1" << buses.size() << tmp_bus.pol;
	for (int i = 0; i < buses.size(); ++i) {
		b = buses[i];
		b->testPoint(point, &sp, &ss);
		//qDebug() << i << sp << ss;
		if (sp >= 0 || ss >= 0) break;
	}
	if ((sp < 0 && ss < 0) || b == 0) return;
	//qDebug("2");
	match_bus = b;
	if ((b->busType() != tmp_bus.busType()) || b->connections_.value(sp, 0) != 0) {
		b->setBusState(false);
	} else {
		if (b->max_ep >= 2) {
			if (bus_from == 0) {
				if (ss >= 0) {
					if (b->endpointCount() >= b->max_ep) {
						b->setBusState(false);
						return;
					}
				}
				if (sp >= 0) {
					if (b->endpointCount() + b->pointSegments(sp) - 2 >= b->max_ep) {
						b->setBusState(false);
						return;
					}
				}
			} else {
				int sep = b->endpointCount() + bus_from->endpointCount();
				if (b->pointSegments(sp) == 1) sep--;
				if (bus_from->selPoint >= 0)
					if (bus_from->pointSegments(bus_from->selPoint) == 1) sep--;
				if (sep > b->max_ep) {
					b->setBusState(false);
					return;
				}
			}
		}
		//b->press_point = point;
		iconnect = true;
		b->setBusState(true);
		b->selPoint = sp;
		b->selSegment = ss;
	}
}


bool BlockView::connectTmpToBus(BlockBusItem * bus) {
	if (bus == 0) return false;
	if (!bus->busState()) return false;
	if (tmp_bus.pol.size() < 2) return false;
	int np = bus->selPoint;
	if (np < 0)
		np = bus->addPoint(tmp_bus.pol.back());
	if (np < 0) return false;
	tmp_bus.pol.pop_back();
	int lp = bus->pol.size();
	bus->pol << tmp_bus.pol;
	for (int i = 0; i < tmp_bus.pol.size() - 1; ++i)
		bus->segments << QPair<int, int>(lp + i, lp + i + 1);
	bus->segments << QPair<int, int>(np, lp + tmp_bus.pol.size() - 1);
	bus->updateGeometry();
	tmp_bus.clear();
	return true;
}


void BlockView::markPins(int bus_type) {
	QList<QGraphicsItem * > gi = scene_->items();
	foreach (QGraphicsItem * i, gi) {
		if (i->data(1004) == "pin") {
			BlockItemPin * p = qgraphicsitem_cast<BlockItemPin*>(i);
			p->saveState();
			if (m_pin_mc) {
				if (p->busType() == tmp_bus.busType())
					p->setState(BlockItemPin::Accept);
			} else {
				if (p->busType() == tmp_bus.busType() && p->state() == BlockItemPin::Disconnected)
					p->setState(BlockItemPin::Accept);
			}
		}
	}
}


void BlockView::unmarkPins(bool to_normal) {
	QList<QGraphicsItem * > gi = scene_->items();
	foreach (QGraphicsItem * i, gi) {
		if (i->data(1004) == "pin") {
			qgraphicsitem_cast<BlockItemPin*>(i)->restoreState();
			if (to_normal)
				while (qgraphicsitem_cast<BlockItemPin*>(i)->restoreState());
		}
	}
}


void BlockView::moveBuses(const QList<QGraphicsItem * > & items, QPointF dp) {
	if (dp.isNull()) return;
	QList<QGraphicsItem * > gi = scene_->items();
	QVector<BlockItemPin * > pins;
	QList<BlockBusItem * > buses;
	//qDebug() << "move";
	foreach (QGraphicsItem * i, items)
		if (i->data(1006) == "item" && i->flags().testFlag(QGraphicsItem::ItemIsMovable))
			pins << qgraphicsitem_cast<BlockItem*>(i)->pins();
	foreach (QGraphicsItem * i, gi)
		if (i->data(1005) == "connection")
			buses << qgraphicsitem_cast<BlockBusItem*>(i);
	foreach (BlockBusItem * b, buses) {
		QList<BlockItemPin * > bpins = b->connections_.values();
		if (!bpins.isEmpty()) {
			foreach (BlockItemPin * p, pins)
				bpins.removeAll(p);
			if (bpins.isEmpty()) {
				b->movePolyline(dp);
				continue;
			}
		}
		foreach (BlockItemPin * p, pins) {
			QList<int> ends = b->connections_.keys(p);
			for (int i = 0; i < ends.size(); ++i) {
				int isp = b->segmentPointPair(ends[i]);
				QPointF sdp;
				if (isp >= 0 && b->pol.size() > 2) {
					sdp = b->pol[isp] - b->pol[ends[i]];
					if (!sdp.isNull()) {
						if (sdp.x() == 0. && dp.x() != 0.)
							b->movePoint(isp, QPointF(dp.x(), 0.));
						if (sdp.y() == 0. && dp.y() != 0.)
							b->movePoint(isp, QPointF(0., dp.y()));
					} else {
						if (p->alignment() == Qt::AlignTop || p->alignment() == Qt::AlignBottom)
							b->movePoint(isp, QPointF(dp.x(), 0.));
						if (p->alignment() == Qt::AlignLeft || p->alignment() == Qt::AlignRight)
							b->movePoint(isp, QPointF(0., dp.y()));
					}
				}
				b->movePoint(ends[i], dp);
			}
		}
	}
}


void BlockView::adjustThumb() {
	if (!scene()) return;
	QSizeF sr = sceneRect().size(), tr;
	double scl;
	if (sr.width() >= sr.height())
		scl = thumb_size.width() / sr.width();
	else
		scl = thumb_size.height() / sr.height();
	tr = sr * scl;
	widget_thumb.setGeometry(QRect(QPoint(width() - tr.width() - 10 - verticalScrollBar()->width(),
										height() - tr.height() - 10 - horizontalScrollBar()->height()), tr.toSize()));
}


void BlockView::newBranch(BlockBusItem * item) {
	bus_from = item;
	markPins(item->busType());
	new_branch = true;
	tmp_bus.setBusType(item->busType());
	if (item->selSegment >= 0) {
		QPointF ds(item->pol[item->segments[item->selSegment].first] - item->pol[item->segments[item->selSegment].second]);
		if (ds.x() == 0.) wavetrace.setPreferredDirection(BlockViewWavetrace::Horizontal);
		if (ds.y() == 0.) wavetrace.setPreferredDirection(BlockViewWavetrace::Vertical);
	}
}


void BlockView::newBranchTrace(BlockBusItem * item, QPointF to) {
	trace(item->press_pos, to, &tmp_bus);
	tmp_bus.show();
}


void BlockView::newBranchAccept(BlockBusItem * item) {
	unmarkPins();
	if (!new_branch) return;
	new_branch = false;
	tmp_bus.hide();
	if (tmp_bus.pol.size() < 2) return;
	tmp_bus.pol.pop_front();
	int np = item->addPoint(item->press_pos);
	if (np < 0) return;
	if (match_bus) {
		if (iconnect) tmp_bus.pol.pop_back();
		else return;
	}
	if (item == match_bus) return;
	int snp = np;
	int lp = item->pol.size();
	if (!tmp_bus.pol.isEmpty()) {
		item->pol << tmp_bus.pol;
		item->segments << QPair<int, int>(np, lp);
		for (int i = 0; i < tmp_bus.pol.size() - 1; ++i)
			item->segments << QPair<int, int>(lp + i, lp + i + 1);
	}
	if (match_bus != 0) {
		if (!iconnect) return;
		np = match_bus->selPoint;
		if (np < 0)
			np = match_bus->addPoint(trace_to);
		if (np < 0) return;
		lp = item->pol.size();
		item->pol << match_bus->pol;
		for (int i = 0; i < match_bus->segments.size(); ++i)
			item->segments << QPair<int, int>(match_bus->segments[i].first + lp, match_bus->segments[i].second + lp);
		if (tmp_bus.pol.isEmpty())
			item->segments << QPair<int, int>(lp + np, snp);
		else
			item->segments << QPair<int, int>(lp + np, lp - 1);
		match_bus->setProperty("_nodelete_", true);
		match_bus->deleteLater();
		match_bus = 0;
	}
	item->updateGeometry();
	emit actionEvent(BlockItemBase::BusAdd, QList<QGraphicsItem*>() << item);
	emit connectionsChanged();
	tmp_bus.clear();
}


void BlockView::newBranchCancel() {
	unmarkPins();
	//qDebug() << "cancel";
	new_branch = false;
	tmp_bus.hide();
	tmp_bus.clear();
}


void BlockView::removedBus(QObject * o) {
	mm_ci = 0;
	reconnectAll();
	BlockBusItem * bus = (BlockBusItem*)o;
	if (bus->property("_nodelete_").toBool()) return;
	emit actionEvent(BlockItemBase::BusRemove, QList<QGraphicsItem*>() << bus);
	emit connectionsChanged();
}


void BlockView::removedBlock(QObject * o) {
	emit blockRemoved((BlockItem*)o);
	emit actionEvent(BlockItemBase::BlockRemove, QList<QGraphicsItem*>() << qgraphicsitem_cast<QGraphicsItem*>((BlockItem*)o));
}


void BlockView::removeJunk() {
	QList<QGraphicsItem * > gi = scene_->items();
	foreach (QGraphicsItem * i, gi) {
		if (i->data(1005) != "connection") continue;
		BlockBusItem * b = qgraphicsitem_cast<BlockBusItem*>(i);
		if (b->pol.size() <= 1) {
			b->deleteLater();
		}
	}
}


void BlockView::_setThumb(double v) {
	_talpha = v;
	QMetaObject::invokeMethod(&widget_thumb, "repaint", Qt::QueuedConnection);
	if (_talpha <= 0.01) widget_thumb.hide();
	else widget_thumb.show();
}


void BlockView::reconnectAll() {
	//qDebug() << "reconnect";
	removeJunk();
	QList<QGraphicsItem * > gi = scene_->items();
	QList<BlockItemPin * > pins;
	QList<BlockBusItem * > buses;
	foreach (QGraphicsItem * i, gi) {
		if (i->data(1004) == "pin")
			pins << qgraphicsitem_cast<BlockItemPin*>(i);
		if (i->data(1005) == "connection")
			buses << qgraphicsitem_cast<BlockBusItem*>(i);
	}
	foreach (BlockItemPin * p, pins) {
		p->setState(BlockItemPin::Disconnected);
		p->buses_.clear();
	}
	foreach (BlockBusItem * b, buses) {
		b->connections_.clear();
		QVector<int> conns(b->endpoints());
		for (int c = 0; c < conns.size(); ++c) {
			QPointF cp = b->pol[conns[c]];
			for (int j = 0; j < pins.size(); ++j) {
				if (!pins[j]->isVisible()) continue;
				QPointF pp = pins[j]->scenePos();
				if (cp == pp) {
					//qDebug() << "found";
					if (b->busType() == pins[j]->busType()) {
						b->connections_[conns[c]] = pins[j];
						if (!pins[j]->buses_.contains(b))
							pins[j]->buses_ << b;
						pins[j]->setState(BlockItemPin::Connected);
					} else
						pins[j]->setState(BlockItemPin::Reject);
					break;
				}
			}
		}
	}
	//qDebug() << pins.size() << buses.size();
}


void BlockView::zoom(double factor) {
	scale(factor, factor);
}


void BlockView::zoomReset() {
	cur_scl = qSqrt(transform().determinant());
	zoom(1. / cur_scl);
}


void BlockView::selectNone() {
	QList<QGraphicsItem*> gi = scene_->items();
	foreach (QGraphicsItem * i, gi)
		i->setSelected(false);
}


void BlockView::selectAll() {
	QList<QGraphicsItem*> gi = scene_->items();
	foreach (QGraphicsItem * i, gi)
		if (i->flags().testFlag(QGraphicsItem::ItemIsSelectable))
			i->setSelected(true);
}


void BlockView::removeSelected() {
	QList<QGraphicsItem*> gi = scene_->selectedItems(), ai;
	blockSignals(true);
	QList<BlockBusItem * > sbuses = buses(), dbuses, wbuses = wrongConnectedBuses();
	//foreach (BlockBusItem * i, wbuses)
	//	sbuses.removeOne(i);
	foreach (BlockBusItem * i, sbuses)
		if (i->connectedBlocks().isEmpty())
			dbuses << i;
	foreach (QGraphicsItem * i, gi) {
		if (i->data(1006) == "item")
			ai << qgraphicsitem_cast<QGraphicsItem*>(i);
		if ((i->data(1006) == "item") || (i->data(1005) == "connection") || (i->data(1009) == "decor")) {
			scene_->sendEvent(i, new QGraphicsSceneEvent(QEvent::Close));
			delete i;
		}
	}
	reconnectAll();
	foreach (BlockBusItem * i, sbuses)
		if (i->connectedBlocks().isEmpty())
			if (!dbuses.contains(i))
				delete i;
	
	blockSignals(false);
	foreach (QGraphicsItem * i, ai)
		emit blockRemoved((BlockItem*)i);
	emit actionEvent(BlockItemBase::BlockRemove, ai);
}


void BlockView::removeAll() {
	QList<QGraphicsItem*> gi = scene_->items(), ai;
	blockSignals(true);
	foreach (QGraphicsItem * i, gi) {
		if (i->data(1006) == "item")
			ai << qgraphicsitem_cast<QGraphicsItem*>(i);
		if ((i->data(1006) == "item") || (i->data(1005) == "connection") || (i->data(1009) == "decor")) {
			if ((i != &sel_rect) && (i != &tmp_bus) && (i->parentItem() == 0) && !(i->data(1008).toBool())) {
				//qDebug() << "delete" << i->data(1004);
				scene_->sendEvent(i, new QGraphicsSceneEvent(QEvent::Close));
				delete i;
			}
		}
	}
	blockSignals(false);
	foreach (QGraphicsItem * i, ai)
		emit blockRemoved((BlockItem*)i);
}