#include "toonzqt/schematicviewer.h"

// TnzQt includes

#include "toonzqt/schematicnode.h"

#include "toonzqt/fxschematicnode.h"

#include "toonzqt/schematicgroupeditor.h"

#include "toonzqt/stageschematicscene.h"

#include "toonzqt/fxschematicscene.h"

#include "toonzqt/menubarcommand.h"

#include "toonzqt/tselectionhandle.h"

#include "toonzqt/gutil.h"

#include "toonzqt/imageutils.h"

#include "toonzqt/dvscrollwidget.h"

// TnzLib includes

#include "toonz/txsheethandle.h"

#include "toonz/tcolumnhandle.h"

#include "toonz/tobjecthandle.h"

#include "toonz/tfxhandle.h"

#include "toonz/txsheet.h"

#include "toonz/txshlevelcolumn.h"

#include "toonz/tcolumnfx.h"

#include "toonz/txshzeraryfxcolumn.h"

#include "toonz/preferences.h"

#include "toonz/fxdag.h"

#include "toonz/tapplication.h"

#include "toonz/tscenehandle.h"

// Qt includes

#include <qgraphicsscenemouseevent></qgraphicsscenemouseevent>

#include <qmouseevent></qmouseevent>

#include <qgraphicsitem.h></qgraphicsitem.h>

#include <qtoolbar></qtoolbar>

#include <qtoolbutton></qtoolbutton>

#include <qmenu></qmenu>

#include <qicon></qicon>

#include <qaction></qaction>

#include <qmainwindow></qmainwindow>

#include <qvboxlayout></qvboxlayout>

// STD includes

#include "assert.h"

#include "math.h"

namespace

{

class SchematicZoomer : public ImageUtils::ShortcutZoomer

{

public:

	SchematicZoomer(QWidget *parent) : ShortcutZoomer(parent) {}

	bool zoom(bool zoomin, bool resetZoom)

	{

		static_cast<schematicsceneviewer *="">(getWidget())->zoomQt(zoomin, resetZoom);</schematicsceneviewer>

		return true;

	}

};

} // namespace

//==================================================================

//

// SchematicScene

//

//==================================================================

SchematicScene::SchematicScene(QWidget *parent)

	: QGraphicsScene(parent)

{

	setSceneRect(0, 0, 50000, 50000);

	setItemIndexMethod(NoIndex);

}

//------------------------------------------------------------------

SchematicScene::~SchematicScene()

{

	clearAllItems();

}

//------------------------------------------------------------------

void SchematicScene::showEvent(QShowEvent *se)

{

	TSelectionHandle *selHandle = TSelectionHandle::getCurrent();

	connect(selHandle, SIGNAL(selectionSwitched(TSelection *, TSelection *)), this, SLOT(onSelectionSwitched(TSelection *, TSelection *)));

	clearSelection();

}

//------------------------------------------------------------------

void SchematicScene::hideEvent(QHideEvent *se)

{

	TSelectionHandle *selHandle = TSelectionHandle::getCurrent();

	disconnect(selHandle, SIGNAL(selectionSwitched(TSelection *, TSelection *)), this, SLOT(onSelectionSwitched(TSelection *, TSelection *)));

}

//------------------------------------------------------------------

/*! Removes and then deletes all item in the scene.

*/

void SchematicScene::clearAllItems()

{

	clearSelection();

	m_highlightedLinks.clear();

	QList<schematicwindoweditor *=""> editors;</schematicwindoweditor>

	QList<schematicnode *=""> nodes;</schematicnode>

	QList<schematiclink *=""> links;</schematiclink>

	int i;

	QList<qgraphicsitem *=""> sceneItems = items();</qgraphicsitem>

	int size = sceneItems.size();

	//create nodes and links list

	for (i = 0; i < size; i++) {

		QGraphicsItem *item = sceneItems.at(i);

		SchematicWindowEditor *editor = dynamic_cast<schematicwindoweditor *="">(item);</schematicwindoweditor>

		SchematicNode *node = dynamic_cast<schematicnode *="">(item);</schematicnode>

		SchematicLink *link = dynamic_cast<schematiclink *="">(item);</schematiclink>

		if (editor)

			editors.append(editor);

		if (node)

			nodes.append(node);

		if (link)

			links.append(link);

	}

	while (links.size() > 0) {

		SchematicLink *link = links.back();

		removeItem(link);

		links.removeLast();

		SchematicPort *startPort = link->getStartPort();

		SchematicPort *endPort = link->getEndPort();

		if (startPort)

			startPort->removeLink(link);

		if (endPort)

			endPort->removeLink(link);

		delete link;

	}

	while (editors.size() > 0) {

		SchematicWindowEditor *editor = editors.back();

		removeItem(editor);

		editors.removeLast();

		delete editor;

	}

	while (nodes.size() > 0) {

		SchematicNode *node = nodes.back();

		removeItem(node);

		nodes.removeLast();

		delete node;

	}

	assert(items().size() == 0);

}

//------------------------------------------------------------------

/*! check if any item exists in the rect

*/

bool SchematicScene::isAnEmptyZone(const QRectF &rect)

{

	QList<qgraphicsitem *=""> allItems = items();</qgraphicsitem>

	QList<qgraphicsitem *="">::iterator it = allItems.begin();</qgraphicsitem>

	for (it; it != allItems.end(); it++) {

		SchematicNode *node = dynamic_cast<schematicnode *="">(*it);</schematicnode>

		if (!node)

			continue;

		FxSchematicNode *fxNode = dynamic_cast<fxschematicnode *="">(node);</fxschematicnode>

		if (fxNode && fxNode->isA(eXSheetFx))

			continue;

		if ((*it)->boundingRect().translated((*it)->scenePos()).intersects(rect))

			return false;

	}

	return true;

}

//------------------------------------------------------------------

QVector<schematicnode *=""> SchematicScene::getPlacedNode(SchematicNode *node)</schematicnode>

{

	QRectF rect = node->boundingRect().translated(node->scenePos());

	QList<qgraphicsitem *=""> allItems = items();</qgraphicsitem>

	QList<qgraphicsitem *="">::iterator it = allItems.begin();</qgraphicsitem>

	QVector<schematicnode *=""> nodes;</schematicnode>

	for (it; it != allItems.end(); it++) {

		SchematicNode *placedNode = dynamic_cast<schematicnode *="">(*it);</schematicnode>

		if (!placedNode || placedNode == node)

			continue;

		QRectF nodeRect = placedNode->boundingRect().translated(placedNode->scenePos());

		QRectF enlargedRect = rect.adjusted(-10, -10, 10, 10);

		if (enlargedRect.contains(nodeRect))

			nodes.push_back(placedNode);

	}

	return nodes;

}

//==================================================================

//

// SchematicSceneViewer

//

//==================================================================

SchematicSceneViewer::SchematicSceneViewer(QWidget *parent)

	: QGraphicsView(parent), m_buttonState(Qt::NoButton), m_oldWinPos(), m_oldScenePos(), m_firstShowing(true)

{

	setObjectName("SchematicSceneViewer");

	setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);

	setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);

	setDragMode(QGraphicsView::NoDrag);

	setTransformationAnchor(QGraphicsView::NoAnchor);

	setRenderHint(QPainter::SmoothPixmapTransform);

	setRenderHint(QPainter::TextAntialiasing);

	setRenderHint(QPainter::Antialiasing);

	setInteractive(true);

	setViewportUpdateMode(QGraphicsView::SmartViewportUpdate);

	show();

}

//------------------------------------------------------------------

SchematicSceneViewer::~SchematicSceneViewer()

{

}

//------------------------------------------------------------------

/*! Reimplemets the QGraphicsView::mousePressEvent() 

*/

void SchematicSceneViewer::mousePressEvent(QMouseEvent *me)

{

	m_buttonState = me->button();

	m_oldWinPos = me->pos();

	m_oldScenePos = mapToScene(m_oldWinPos);

	bool drawRect = true;

	QList<qgraphicsitem *=""> pointedItems = items(me->pos());</qgraphicsitem>

	int i;

	for (i = 0; i < pointedItems.size(); i++) {

		SchematicWindowEditor *editor = dynamic_cast<schematicwindoweditor *="">(pointedItems[i]);</schematicwindoweditor>

		if (!editor) {

			drawRect = false;

			break;

		}

	}

	if (m_buttonState == Qt::LeftButton && drawRect)

		setDragMode(QGraphicsView::RubberBandDrag);

	QGraphicsView::mousePressEvent(me);

}

//------------------------------------------------------------------

/*! Reimplemets the QGraphicsView::mouseMoveEvent() 

*/

void SchematicSceneViewer::mouseMoveEvent(QMouseEvent *me)

{

	QPoint currWinPos = me->pos();

	QPointF currScenePos = mapToScene(currWinPos);

	if (m_buttonState == Qt::MidButton) {

		//Panning

		setInteractive(false);

		// I need to disable QGraphicsView event handling to avoid the generation of 'virtual' mouseMoveEvent

		QPointF delta = currScenePos - m_oldScenePos;

		translate(delta.x(), delta.y());

		currScenePos = mapToScene(currWinPos);

		// translate has changed the matrix affecting the mapToScene() method. I have to recompute currScenePos

		setInteractive(true);

	}

	m_oldWinPos = currWinPos;

	m_oldScenePos = currScenePos;

	QGraphicsView::mouseMoveEvent(me);

}

//------------------------------------------------------------------

/*! Reimplemets the QGraphicsView::mouseReleaseEvent() 

*/

void SchematicSceneViewer::mouseReleaseEvent(QMouseEvent *me)

{

	m_buttonState = Qt::NoButton;

	QGraphicsView::mouseReleaseEvent(me);

	setDragMode(QGraphicsView::NoDrag);

	//update();

}

//------------------------------------------------------------------

void SchematicSceneViewer::keyPressEvent(QKeyEvent *ke)

{

	ke->ignore();

	QGraphicsView::keyPressEvent(ke);

	if (!ke->isAccepted())

		SchematicZoomer(this).exec(ke);

}

//------------------------------------------------------------------

/*! Reimplemets the QGraphicsView::wheelEvent() 

*/

void SchematicSceneViewer::wheelEvent(QWheelEvent *me)

{

	me->accept();

	double factor = exp(me->delta() * 0.001);

	changeScale(me->pos(), factor);

}

//------------------------------------------------------------------

void SchematicSceneViewer::zoomQt(bool zoomin, bool resetZoom)

{

#if QT_VERSION >= 0x050000

	double scale2 = matrix().determinant();

#else

	double scale2 = matrix().det();

#endif

	// if the zoom scale is changed over 100% in FxSchematic, call updateScene

	bool beforeIsLarge = (scale2 >= 1.0);

	if (resetZoom || ((scale2 < 100000 || !zoomin) && (scale2 > 0.001 * 0.05 || zoomin))) {

		double oldZoomScale = sqrt(scale2);

		double zoomScale = resetZoom ? 1 : ImageUtils::getQuantizedZoomFactor(oldZoomScale, zoomin);

		QMatrix scale = QMatrix().scale(zoomScale / oldZoomScale, zoomScale / oldZoomScale);

		//See QGraphicsView::mapToScene()'s doc for details

		QRect rect(0, 0, width(), height());

		QRectF sceneCenterRect(mapToScene(QRect(rect.center(), QSize(2, 2))).boundingRect());

		setMatrix(scale, true);

		centerOn(sceneCenterRect.center());

#if QT_VERSION >= 0x050000

		bool afterIsLarge = (matrix().determinant() >= 1.0);

#else

		bool afterIsLarge = (matrix().det() >= 1.0);

#endif

		if (beforeIsLarge != afterIsLarge) {

			FxSchematicScene *fxScene = qobject_cast<fxschematicscene *="">(scene());</fxschematicscene>

			if (fxScene)

				fxScene->updateScene();

		}

	}

}

//------------------------------------------------------------------

/*! The view is scaled around the point \b winPos by \b scaleFactor;

*/

void SchematicSceneViewer::changeScale(const QPoint &winPos, qreal scaleFactor)

{

#if QT_VERSION >= 0x050000

	bool beforeIsLarge = (matrix().determinant() >= 1.0);

#else

	bool beforeIsLarge = (matrix().det() >= 1.0);

#endif

	QPointF startScenePos = mapToScene(winPos);

	QMatrix scale = QMatrix().scale(scaleFactor, scaleFactor);

	setMatrix(scale, true);

	QPointF endScenePos = mapToScene(winPos);

	QPointF delta = endScenePos - startScenePos;

	translate(delta.x(), delta.y());

#if QT_VERSION >= 0x050000

	bool afterIsLarge = (matrix().determinant() >= 1.0);

#else

	bool afterIsLarge = (matrix().det() >= 1.0);

#endif

	if (beforeIsLarge != afterIsLarge) {

		FxSchematicScene *fxScene = qobject_cast<fxschematicscene *="">(scene());</fxschematicscene>

		if (fxScene)

			fxScene->updateScene();

	}

}

//------------------------------------------------------------------

void SchematicSceneViewer::fitScene()

{

	if (scene()) {

#if QT_VERSION >= 0x050000

		bool beforeIsLarge = (matrix().determinant() >= 1.0);

#else

		bool beforeIsLarge = (matrix().det() >= 1.0);

#endif

		QRectF rect = scene()->itemsBoundingRect();

		fitInView(rect, Qt::KeepAspectRatio);

#if QT_VERSION >= 0x050000

		bool afterIsLarge = (matrix().determinant() >= 1.0);

#else

		bool afterIsLarge = (matrix().det() >= 1.0);

#endif

		if (beforeIsLarge != afterIsLarge) {

			FxSchematicScene *fxScene = qobject_cast<fxschematicscene *="">(scene());</fxschematicscene>

			if (fxScene)

				fxScene->updateScene();

		}

	}

}

//------------------------------------------------------------------

void SchematicSceneViewer::centerOnCurrent()

{

	SchematicScene *schematicScene = dynamic_cast<schematicscene *="">(scene());</schematicscene>

	QGraphicsItem *node = schematicScene->getCurrentNode();

	if (node)

		centerOn(node);

}

//------------------------------------------------------------------

void SchematicSceneViewer::reorderScene()

{

	SchematicScene *schematicScene = dynamic_cast<schematicscene *="">(scene());</schematicscene>

	schematicScene->reorderScene();

}

//------------------------------------------------------------------

void SchematicSceneViewer::normalizeScene()

{

#if QT_VERSION >= 0x050000

	bool beforeIsLarge = (matrix().determinant() >= 1.0);

#else

	bool beforeIsLarge = (matrix().det() >= 1.0);

#endif

	//See QGraphicsView::mapToScene()'s doc for details

	QRect rect(0, 0, width(), height());

	QRectF sceneCenterRect(mapToScene(QRect(rect.center(), QSize(2, 2))).boundingRect());

	resetMatrix();

#if defined(MACOSX)

	scale(1.32, 1.32);

#endif

	centerOn(sceneCenterRect.center());

#if QT_VERSION >= 0x050000

	bool afterIsLarge = (matrix().determinant() >= 1.0);

#else

	bool afterIsLarge = (matrix().det() >= 1.0);

#endif

	if (beforeIsLarge != afterIsLarge) {

		FxSchematicScene *fxScene = qobject_cast<fxschematicscene *="">(scene());</fxschematicscene>

		if (fxScene)

			fxScene->updateScene();

	}

}

//------------------------------------------------------------------

void SchematicSceneViewer::showEvent(QShowEvent *se)

{

	QGraphicsView::showEvent(se);

	if (m_firstShowing) {

		m_firstShowing = false;

		QRectF rect = scene()->itemsBoundingRect();

		resetMatrix();

		centerOn(rect.center());

	}

}

//==================================================================

//

// SchematicViewer

//

//==================================================================

SchematicViewer::SchematicViewer(QWidget *parent)

	: QWidget(parent), m_fullSchematic(true), m_maximizedNode(false), m_sceneHandle(0)

{

	m_viewer = new SchematicSceneViewer(this);

	m_stageScene = new StageSchematicScene(this);

	m_fxScene = new FxSchematicScene(this);

	m_commonToolbar = new QToolBar(m_viewer);

	m_stageToolbar = new QToolBar(m_viewer);

	m_fxToolbar = new QToolBar(m_viewer);

	m_swapToolbar = new QToolBar(m_viewer);

	m_commonToolbar->setObjectName("ToolBarWithoutBorder");

	m_stageToolbar->setObjectName("ToolBarWithoutBorder");

	m_fxToolbar->setObjectName("ToolBarWithoutBorder");

	m_swapToolbar->setObjectName("ToolBarWithoutBorder");

	createToolbars();

	createActions();

	// layout

	QVBoxLayout *mainLayout = new QVBoxLayout();

	mainLayout->setMargin(1);

	mainLayout->setSpacing(0);

	{

		mainLayout->addWidget(m_viewer, 1);

		QFrame *bottomFrame = new QFrame(this);

		bottomFrame->setObjectName("SchematicBottomFrame");

		QHBoxLayout *horizontalLayout = new QHBoxLayout();

		horizontalLayout->setMargin(0);

		horizontalLayout->setSpacing(0);

		{

			horizontalLayout->addWidget(m_commonToolbar);

			horizontalLayout->addStretch();

			horizontalLayout->addWidget(m_fxToolbar);

			horizontalLayout->addWidget(m_stageToolbar);

			horizontalLayout->addWidget(m_swapToolbar);

		}

		bottomFrame->setLayout(horizontalLayout);

		mainLayout->addWidget(bottomFrame, 0);

	}

	setLayout(mainLayout);

	connect(m_fxScene, SIGNAL(showPreview(TFxP)), this, SIGNAL(showPreview(TFxP)));

	connect(m_fxScene, SIGNAL(doCollapse(const QList<tfxp> &)), this, SIGNAL(doCollapse(const QList<tfxp> &)));</tfxp></tfxp>

	connect(m_stageScene, SIGNAL(doCollapse(QList<tstageobjectid>)), this, SIGNAL(doCollapse(QList<tstageobjectid>)));</tstageobjectid></tstageobjectid>

	connect(m_fxScene, SIGNAL(doExplodeChild(const QList<tfxp> &)), this, SIGNAL(doExplodeChild(const QList<tfxp> &)));</tfxp></tfxp>

	connect(m_stageScene, SIGNAL(doExplodeChild(QList<tstageobjectid>)), this, SIGNAL(doExplodeChild(QList<tstageobjectid>)));</tstageobjectid></tstageobjectid>

	connect(m_stageScene, SIGNAL(editObject()), this, SIGNAL(editObject()));

	connect(m_fxScene, SIGNAL(editObject()), this, SIGNAL(editObject()));

	m_viewer->setScene(m_stageScene);

	m_fxToolbar->hide();

	setFocusProxy(m_viewer);

}

//------------------------------------------------------------------

SchematicViewer::~SchematicViewer()

{

}

//------------------------------------------------------------------

void SchematicViewer::setApplication(TApplication *app)

{

	m_stageScene->setXsheetHandle(app->getCurrentXsheet());

	m_stageScene->setObjectHandle(app->getCurrentObject());

	m_stageScene->setFxHandle(app->getCurrentFx());

	m_stageScene->setColumnHandle(app->getCurrentColumn());

	m_stageScene->setSceneHandle(app->getCurrentScene());

	m_stageScene->setFrameHandle(app->getCurrentFrame());

	m_fxScene->setApplication(app);

}

//------------------------------------------------------------------

void SchematicViewer::updateSchematic()

{

	m_stageScene->updateScene();

	m_fxScene->updateScene();

}

//------------------------------------------------------------------

void SchematicViewer::setSchematicScene(SchematicScene *scene)

{

	if (scene) {

		m_viewer->setScene(scene);

		m_viewer->centerOn(scene->sceneRect().center());

	}

}

//------------------------------------------------------------------

void SchematicViewer::createToolbars()

{

	// Initialize them

	m_stageToolbar->setMovable(false);

	m_stageToolbar->setIconSize(QSize(23, 17));

	m_stageToolbar->setLayoutDirection(Qt::RightToLeft);

	m_stageToolbar->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);

	m_commonToolbar->setMovable(false);

	m_commonToolbar->setIconSize(QSize(23, 17));

	m_commonToolbar->setLayoutDirection(Qt::RightToLeft);

	m_commonToolbar->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);

	m_fxToolbar->setMovable(false);

	m_fxToolbar->setIconSize(QSize(23, 17));

	m_fxToolbar->setLayoutDirection(Qt::RightToLeft);

	m_fxToolbar->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);

	m_swapToolbar->setMovable(false);

	m_swapToolbar->setIconSize(QSize(23, 17));

	m_swapToolbar->setLayoutDirection(Qt::RightToLeft);

	m_swapToolbar->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);

}

//------------------------------------------------------------------

void SchematicViewer::createActions()

{

	// Create all actions

	QAction *addPegbar = 0, *addSpline = 0, *addCamera = 0,

			*insertFx = 0, *addOutputFx = 0;

	{

		// Fit schematic

		QIcon fitSchematicIcon = createQIconOnOffPNG("fit", false);

		m_fitSchematic = new QAction(fitSchematicIcon, tr("&Fit to Window"), m_commonToolbar);

		connect(m_fitSchematic, SIGNAL(triggered()), m_viewer, SLOT(fitScene()));

		// Center On

		QIcon centerOnIcon = createQIconOnOffPNG("centerselection", false);

		m_centerOn = new QAction(centerOnIcon, tr("&Focus on Current"), m_commonToolbar);

		connect(m_centerOn, SIGNAL(triggered()), m_viewer, SLOT(centerOnCurrent()));

		// Reorder schematic

		QIcon reorderIcon = createQIconOnOffPNG("reorder", false);

		m_reorder = new QAction(reorderIcon, tr("&Reorder Nodes"), m_commonToolbar);

		connect(m_reorder, SIGNAL(triggered()), m_viewer, SLOT(reorderScene()));

		//Normalize schematic schematic

		QIcon normalizeIcon = createQIconOnOffPNG("resetsize", false);

		m_normalize = new QAction(normalizeIcon, tr("&Reset Size"), m_commonToolbar);

		connect(m_normalize, SIGNAL(triggered()), m_viewer, SLOT(normalizeScene()));

		QIcon nodeSizeIcon = createQIconOnOffPNG(m_maximizedNode ? "minimizenodes" : "maximizenodes", false);

		m_nodeSize = new QAction(nodeSizeIcon, m_maximizedNode ? tr("&Minimize Nodes") : tr("&Maximize Nodes"), m_commonToolbar);

		connect(m_nodeSize, SIGNAL(triggered()), this, SLOT(changeNodeSize()));

		if (m_fullSchematic) {

			// AddPegbar

			addPegbar = new QAction(tr("&New Pegbar"), m_stageToolbar);

			QIcon addPegbarIcon = createQIconOnOffPNG("pegbar", false);

			addPegbar->setIcon(addPegbarIcon);

			connect(addPegbar, SIGNAL(triggered()), m_stageScene, SLOT(onPegbarAdded()));

			// AddCamera

			addCamera = new QAction(tr("&New Camera"), m_stageToolbar);

			QIcon addCameraIcon = createQIconOnOffPNG("camera", false);

			addCamera->setIcon(addCameraIcon);

			connect(addCamera, SIGNAL(triggered()), m_stageScene, SLOT(onCameraAdded()));

			// AddSpline

			addSpline = new QAction(tr("&New Motion Path"), m_stageToolbar);

			QIcon addSplineIcon = createQIconOnOffPNG("motionpath", false);

			addSpline->setIcon(addSplineIcon);

			connect(addSpline, SIGNAL(triggered()), m_stageScene, SLOT(onSplineAdded()));

			// InsertFx

			insertFx = CommandManager::instance()->getAction("MI_InsertFx");

			if (insertFx) {

				QIcon insertFxIcon = createQIconOnOffPNG("fx", false);

				insertFx->setIcon(insertFxIcon);

			}

			// AddOutputFx

			addOutputFx = CommandManager::instance()->getAction("MI_NewOutputFx");

			QIcon addOutputFxIcon = createQIconOnOffPNG("output", false);

			if (addOutputFx)

				addOutputFx->setIcon(addOutputFxIcon);

			// Swap fx/stage schematic

			QIcon changeSchematicIcon = createQIconOnOffPNG("swap", false);

			m_changeScene = CommandManager::instance()->getAction("A_FxSchematicToggle", true);

			if (m_changeScene) {

				m_changeScene->setIcon(changeSchematicIcon);

				connect(m_changeScene, SIGNAL(triggered()), this, SLOT(onSceneChanged()));

			} else

				m_changeScene = 0;

		}

	}

	// Add actions to toolbars (in reverse)

	m_commonToolbar->addSeparator();

	m_commonToolbar->addAction(m_nodeSize);

	m_commonToolbar->addAction(m_normalize);

	m_commonToolbar->addAction(m_reorder);

	m_commonToolbar->addAction(m_centerOn);

	m_commonToolbar->addAction(m_fitSchematic);

	if (m_fullSchematic) {

		m_stageToolbar->addSeparator();

		m_stageToolbar->addAction(addSpline);

		m_stageToolbar->addAction(addCamera);

		m_stageToolbar->addAction(addPegbar);

		m_fxToolbar->addSeparator();

		m_fxToolbar->addAction(addOutputFx);

		m_fxToolbar->addAction(insertFx);

		if (m_changeScene)

			m_swapToolbar->addAction(m_changeScene);

	}

}

//------------------------------------------------------------------

void SchematicViewer::setStageSchematic()

{

	if (m_viewer->scene() != m_stageScene) {

		m_viewer->setScene(m_stageScene);

		QRectF rect = m_stageScene->itemsBoundingRect();

		m_viewer->resetMatrix();

		m_viewer->centerOn(rect.center());

		m_fxToolbar->hide();

		m_stageToolbar->show();

		m_viewer->update();

	}

	parentWidget()->setWindowTitle(QObject::tr("Stage Schematic"));

}

//------------------------------------------------------------------

void SchematicViewer::setFxSchematic()

{

	if (m_viewer->scene() != m_fxScene) {

		m_viewer->setScene(m_fxScene);

		QRectF rect = m_fxScene->itemsBoundingRect();

		m_viewer->resetMatrix();

		m_viewer->centerOn(rect.center());

		m_stageToolbar->hide();

		m_fxToolbar->show();

		//check if the fx scene was small scaled (icon view mode)

		if (!m_fxScene->isLargeScaled())

			m_fxScene->updateScene();

		m_viewer->update();

	}

	parentWidget()->setWindowTitle(QObject::tr("FX Schematic"));

}

//------------------------------------------------------------------

void SchematicViewer::onSceneChanged()

{

	if (!hasFocus())

		return;

	QGraphicsScene *scene = m_viewer->scene();

	if (scene == m_fxScene)

		setStageSchematic();

	else if (scene == m_stageScene)

		setFxSchematic();

}

//------------------------------------------------------------------

void SchematicViewer::onSceneSwitched()

{

	m_maximizedNode = m_fxScene->getXsheetHandle()->getXsheet()->getFxDag()->getDagGridDimension() == 0;

	QIcon nodeSizeIcon = createQIconOnOffPNG(m_maximizedNode ? "minimizenodes" : "maximizenodes", false);

	m_nodeSize->setIcon(nodeSizeIcon);

	QString label(m_maximizedNode ? tr("&Minimize Nodes") : tr("&Maximize Nodes"));

	m_nodeSize->setText(label);

	// reset schematic

	m_viewer->resetMatrix();

	m_viewer->centerOn(m_viewer->scene()->itemsBoundingRect().center());

	if (m_viewer->scene() == m_fxScene && !m_fxScene->isLargeScaled())

		m_fxScene->updateScene();

}

//------------------------------------------------------------------

bool SchematicViewer::isStageSchematicViewed()

{

	QGraphicsScene *scene = m_viewer->scene();

	return scene == m_stageScene;

}

//------------------------------------------------------------------

void SchematicViewer::setStageSchematicViewed(bool isStageSchematic)

{

	if (!m_fullSchematic)

		isStageSchematic = true;

	if (isStageSchematic == isStageSchematicViewed())

		return;

	if (isStageSchematic)

		setStageSchematic();

	else

		setFxSchematic();

}

//------------------------------------------------------------------

void SchematicViewer::updateScenes()

{

	TStageObjectId id = m_stageScene->getCurrentObject();

	if (id.isColumn()) {

		m_stageScene->update();

		TXsheet *xsh = m_stageScene->getXsheetHandle()->getXsheet();

		if (!xsh)

			return;

		TXshColumn *column = xsh->getColumn(id.getIndex());

		if (!column) {

			m_fxScene->getFxHandle()->setFx(0, false);

			return;

		}

		TFx *fx = column->getFx();

		m_fxScene->getFxHandle()->setFx(fx, false);

		m_fxScene->update();

	}

}

//------------------------------------------------------------------

void SchematicViewer::changeNodeSize()

{

	m_maximizedNode = !m_maximizedNode;

	//aggiono l'icona del pulsante;

	m_fxScene->resizeNodes(m_maximizedNode);

	m_stageScene->resizeNodes(m_maximizedNode);

	QIcon nodeSizeIcon = createQIconOnOffPNG(m_maximizedNode ? "minimizenodes" : "maximizenodes", false);

	m_nodeSize->setIcon(nodeSizeIcon);

	QString label(m_maximizedNode ? tr("&Minimize Nodes") : tr("&Maximize Nodes"));

	m_nodeSize->setText(label);

}