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#include "vectorselectiontool.h"

// TnzTools includes
#include "tools/toolhandle.h"
#include "tools/imagegrouping.h"
#include "tools/cursors.h"

// TnzQt includes
#include "toonzqt/selectioncommandids.h"
#include "toonzqt/tselectionhandle.h"
#include "toonzqt/imageutils.h"

// TnzLib includes
#include "toonz/txsheethandle.h"
#include "toonz/txshlevelhandle.h"
#include "toonz/tobjecthandle.h"
#include "toonz/tstageobject.h"

// TnzBase includes
#include "tenv.h"

// TnzCore includes
#include "drawutil.h"

// boost includes
#include <boost/bind.hpp>

using namespace ToolUtils;
using namespace DragSelectionTool;

//********************************************************************************
//    Global variables
//********************************************************************************

namespace
{

VectorSelectionTool l_vectorSelectionTool(TTool::Vectors);
TEnv::IntVar l_strokeSelectConstantThickness("SelectionToolConstantThickness", 0);

const int l_dragThreshold = 10; //!< Distance, in pixels, the user has to
								//!  move from a button press to trigger a
								//!  selection drag.
} // namespace

//********************************************************************************
//    Local namespace  stuff
//********************************************************************************

namespace
{

FourPoints getFourPointsFromVectorImage(
	const TVectorImageP &img, const std::set<int> &styleIds, double &maxThickness)
{
	FourPoints p;

	if (styleIds.empty()) {
		p = img->getBBox();

		for (UINT i = 0; i < img->getStrokeCount(); i++) {
			TStroke *s = img->getStroke(i);

			for (int j = 0; j < s->getControlPointCount(); j++) {
				double thick = s->getControlPoint(j).thick;
				if (maxThickness < thick)
					maxThickness = thick;
			}
		}
	} else {
		TRectD bbox;

		for (UINT i = 0; i < img->getStrokeCount(); i++) {
			TStroke *s = img->getStroke(i);
			if (!styleIds.count(s->getStyle()))
				continue;

			if (bbox.isEmpty())
				bbox = s->getBBox();
			else
				bbox += s->getBBox();

			for (int j = 0; j < s->getControlPointCount(); j++) {
				double thick = s->getControlPoint(j).thick;
				if (maxThickness < thick)
					maxThickness = thick;
			}
		}

		p = bbox;
	}

	return p;
}

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

bool getStrokeIndexFromPos(UINT &index, const TVectorImageP &vi, const TPointD &pos, double pixelSize)
{
	if (!vi)
		return false;
	double t, dist2 = 0;
	double maxDist = 5 * pixelSize;
	double maxDist2 = maxDist * maxDist;
	vi->getNearestStroke(pos, t, index, dist2);
	return (dist2 < maxDist2 * 4);
}

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

static bool currentOrNotSelected(const VectorSelectionTool &tool, const TFrameId &fid)
{
	return (tool.getCurrentFid() == fid || (tool.isSelectedFramesType() && tool.getSelectedFrames().count(fid) == 0));
}

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

inline void notifySelectionChanged()
{
	TTool::getApplication()->getCurrentSelection()->notifySelectionChanged();
}

} // namespace

//********************************************************************************
//    VectorFreeDeformer  implementation
//********************************************************************************

VectorFreeDeformer::VectorFreeDeformer(TVectorImageP vi, set<int> strokeIndexes)
	: FreeDeformer(), m_vi(vi), m_strokeIndexes(strokeIndexes), m_preserveThickness(false), m_computeRegion(false), m_flip(false)
{
	TRectD r;

	set<int>::iterator it, iEnd = m_strokeIndexes.end();
	for (it = m_strokeIndexes.begin(); it != iEnd; ++it) {
		TStroke *stroke = m_vi->getStroke(*it);
		r += stroke->getBBox();
		m_originalStrokes.push_back(new TStroke(*stroke));
	}

	m_originalP00 = r.getP00();
	m_originalP11 = r.getP11();
	m_newPoints.push_back(m_originalP00);
	m_newPoints.push_back(r.getP10());
	m_newPoints.push_back(m_originalP11);
	m_newPoints.push_back(r.getP01());
}

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

VectorFreeDeformer::~VectorFreeDeformer()
{
	clearPointerContainer(m_originalStrokes);
}

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

void VectorFreeDeformer::setPreserveThickness(bool preserveThickness)
{
	m_preserveThickness = preserveThickness;
}

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

void VectorFreeDeformer::setComputeRegion(bool computeRegion)
{
	m_computeRegion = computeRegion;
}

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

void VectorFreeDeformer::setFlip(bool flip)
{
	m_flip = flip;
}

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

void VectorFreeDeformer::setPoint(int index, const TPointD &p)
{
	m_newPoints[index] = p;
}

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

void VectorFreeDeformer::setPoints(const TPointD &p0, const TPointD &p1, const TPointD &p2, const TPointD &p3)
{
	m_newPoints[0] = p0;
	m_newPoints[1] = p1;
	m_newPoints[2] = p2;
	m_newPoints[3] = p3;
}

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

void VectorFreeDeformer::deformRegions()
{
	if (m_strokeIndexes.empty() || !m_computeRegion)
		return;

	std::vector<int> selectedIndexes(
		m_strokeIndexes.begin(), m_strokeIndexes.end());

	m_vi->notifyChangedStrokes(selectedIndexes, m_originalStrokes, m_flip);
	m_computeRegion = false;
}

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

void VectorFreeDeformer::deformImage()
{
	assert(int(m_strokeIndexes.size()) == int(m_originalStrokes.size()));

	QMutexLocker lock(m_vi->getMutex());

	std::set<int>::iterator it1 = m_strokeIndexes.begin();
	std::vector<TStroke *>::iterator it2 = m_originalStrokes.begin();

	for (it1; it1 != m_strokeIndexes.end(); ++it1, ++it2) {
		TStroke *stroke = m_vi->getStroke(*it1);
		TStroke *originalStroke = *it2;

		assert(stroke->getControlPointCount() == originalStroke->getControlPointCount());
		int j;
		for (j = 0; j < stroke->getControlPointCount(); j++) {
			TThickPoint p = deform(originalStroke->getControlPoint(j));
			stroke->setControlPoint(j, p);
		}
	}

	if (m_computeRegion)
		deformRegions();
}

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

TThickPoint VectorFreeDeformer::deform(TThickPoint point)
{
	double vs = m_originalP11.x - m_originalP00.x;
	double s = (vs == 0) ? 0 : (point.x - m_originalP00.x) / vs;
	double vt = m_originalP11.y - m_originalP00.y;
	double t = (vt == 0) ? 0 : (point.y - m_originalP00.y) / vt;
	TPointD A = m_newPoints[0];
	TPointD B = m_newPoints[1];
	TPointD C = m_newPoints[2];
	TPointD D = m_newPoints[3];
	TPointD AD = (1 - t) * A + t * D;
	TPointD BC = (1 - t) * B + t * C;
	TPointD p = (1 - s) * AD + s * BC;

	double thickness = point.thick;
	if (!m_preserveThickness) {
		double eps = 1.e-2;
		TPointD p0x = TPointD(p.x - eps, p.x);
		TPointD p1x = TPointD(p.x + eps, p.x);
		TPointD p0y = TPointD(p.x, p.y - eps);
		TPointD p1y = TPointD(p.x, p.y + eps);
		m_preserveThickness = true;
		TThickPoint newp0x = deform(p0x);
		TThickPoint newp1x = deform(p1x);
		TThickPoint newp0y = deform(p0y);
		TThickPoint newp1y = deform(p1y);
		m_preserveThickness = false;
		double newA = fabs(cross(newp1x - newp0x, newp1y - newp0y));
		double a = 4 * eps * eps;
		thickness *= sqrt(newA / a);
	}
	return TThickPoint(p, thickness);
}

//********************************************************************************
//    UndoChangeStrokes  implementation
//********************************************************************************

DragSelectionTool::UndoChangeStrokes::UndoChangeStrokes(
	TXshSimpleLevel *level, const TFrameId &frameId, VectorSelectionTool *tool,
	const StrokeSelection &selection)
	: ToolUtils::TToolUndo(level, frameId), m_tool(tool), m_selectionCount(tool->getSelectionCount()) // Not related to selection
	  ,
	  m_oldBBox(tool->getBBox()), m_oldCenter(tool->getCenter()), m_oldDeformValues(tool->m_deformValues), m_newDeformValues(), m_flip(false)
{
	TVectorImageP vi = m_level->getFrame(m_frameId, false);
	if (!vi) {
		assert(vi);
		return;
	}

	const StrokeSelection::IndexesContainer &indexes = selection.getSelection();
	m_indexes.assign(indexes.begin(), indexes.end());

	registerStrokes(true);
}

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

DragSelectionTool::UndoChangeStrokes::UndoChangeStrokes(
	TXshSimpleLevel *level, const TFrameId &frameId, VectorSelectionTool *tool,
	const LevelSelection &selection)
	: ToolUtils::TToolUndo(level, frameId), m_tool(tool), m_selectionCount(tool->getSelectionCount()) // Not related to selection
	  ,
	  m_oldBBox(tool->getBBox()), m_oldCenter(tool->getCenter()), m_oldDeformValues(tool->m_deformValues), m_newDeformValues(), m_flip(false)
{
	TVectorImageP vi = m_level->getFrame(m_frameId, false);
	if (!vi) {
		assert(vi);
		return;
	}

	m_indexes = getSelectedStrokes(*vi, selection);

	registerStrokes(true);
}

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

DragSelectionTool::UndoChangeStrokes::~UndoChangeStrokes()
{
	clearPointerContainer(m_oldStrokes);
	clearPointerContainer(m_newStrokes);
}

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

void DragSelectionTool::UndoChangeStrokes::registerStrokes(bool beforeModify)
{
	TVectorImageP vi = m_level->getFrame(m_frameId, false);
	if (!vi) {
		assert(vi);
		return;
	}

	std::vector<TStroke *> &strokes = beforeModify ? m_oldStrokes
												   : m_newStrokes;

	TRectD bbox;

	int s, sCount = int(m_indexes.size());
	for (s = 0; s != sCount; ++s) {
		TStroke *stroke = vi->getStroke(m_indexes[s]);
		bbox += stroke->getBBox();

		strokes.push_back(new TStroke(*stroke));
	}

	if (beforeModify && !bbox.isEmpty()) {
		ImageUtils::getFillingInformationOverlappingArea(
			vi, m_regionsData, bbox);
	} else {
		m_newBBox = m_tool->getBBox();
		m_newCenter = m_tool->getCenter();
		m_newDeformValues = m_tool->m_deformValues;
	}
}

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

void DragSelectionTool::UndoChangeStrokes::transform(
	const std::vector<TStroke *> &strokes, FourPoints bbox,
	TPointD center, DragSelectionTool::DeformValues deformValues) const
{
	TVectorImageP image = m_level->getFrame(m_frameId, true);
	if (!image) {
		assert(image);
		return;
	}

	int s, sCount = int(m_indexes.size());
	for (s = 0; s != sCount; ++s) {
		int index = m_indexes[s];

		TStroke *sourcesStroke = strokes[s],
				*stroke = image->getStroke(index);

		int cp, cpCount = stroke->getControlPointCount();
		for (cp = 0; cp != cpCount; ++cp)
			stroke->setControlPoint(cp, sourcesStroke->getControlPoint(cp));
	}

	image->notifyChangedStrokes(m_indexes, strokes, m_flip);

	if (!m_tool->isSelectionEmpty() && m_selectionCount == m_tool->getSelectionCount()) {
		m_tool->setBBox(bbox);
		m_tool->setCenter(center);
	} else
		m_tool->computeBBox();

	m_tool->notifyImageChanged(m_frameId);
	m_tool->m_deformValues = deformValues;
	TTool::getApplication()->getCurrentXsheet()->notifyXsheetChanged();
	TTool::getApplication()->getCurrentTool()->notifyToolChanged();
}

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

void DragSelectionTool::UndoChangeStrokes::restoreRegions() const
{
	TVectorImageP vi = m_level->getFrame(m_frameId, true);
	if (!vi) {
		assert(vi);
		return;
	}

	ImageUtils::assignFillingInformation(*vi, m_regionsData);
}

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

void DragSelectionTool::UndoChangeStrokes::undo() const
{
	transform(m_oldStrokes, m_oldBBox, m_oldCenter, m_oldDeformValues);
	restoreRegions();
}

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

void DragSelectionTool::UndoChangeStrokes::redo() const
{
	transform(m_newStrokes, m_newBBox, m_newCenter, m_newDeformValues);
}

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

int DragSelectionTool::UndoChangeStrokes::getSize() const
{
	return sizeof(*this) + sizeof(*m_tool);
}

//=============================================================================
// UndoChangeOutlineStyle
//-----------------------------------------------------------------------------

class UndoChangeOutlineStyle : public ToolUtils::TToolUndo
{
	vector<TStroke::OutlineOptions> m_oldOptions, m_newOptions;
	FourPoints m_oldBBox, m_newBBox;
	VectorSelectionTool *m_tool;
	vector<int> m_indexes;
	int m_selectionCount;

public:
	UndoChangeOutlineStyle(TXshSimpleLevel *level, const TFrameId &frameId, VectorSelectionTool *tool);
	~UndoChangeOutlineStyle() {}
	void registerStrokes(bool beforeModify = false);
	void transform(const std::vector<TStroke::OutlineOptions> &options, FourPoints bbox) const;
	void undo() const;
	void redo() const;
	int getSize() const;
};

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

UndoChangeOutlineStyle::UndoChangeOutlineStyle(TXshSimpleLevel *level, const TFrameId &frameId, VectorSelectionTool *tool)
	: ToolUtils::TToolUndo(level, frameId), m_tool(tool), m_oldBBox(tool->getBBox()), m_selectionCount(tool->getSelectionCount())
{
	TVectorImageP image = m_level->getFrame(m_frameId, false);
	assert(!!image);
	if (!image)
		return;
	StrokeSelection *strokeSelection = dynamic_cast<StrokeSelection *>(tool->getSelection());
	int i;
	for (i = 0; i < (int)image->getStrokeCount(); i++) {
		if (!strokeSelection->isSelected(i) && !m_tool->isLevelType() && !m_tool->isSelectedFramesType())
			continue;
		m_indexes.push_back(i);
	}
	registerStrokes(true);
}

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

void UndoChangeOutlineStyle::registerStrokes(bool beforeModify)
{
	TVectorImageP image = m_level->getFrame(m_frameId, false);
	assert(!!image);
	if (!image)
		return;
	int i;
	for (i = 0; i < (int)m_indexes.size(); i++) {
		if (beforeModify)
			m_oldOptions.push_back(image->getStroke(m_indexes[i])->outlineOptions());
		else
			m_newOptions.push_back(image->getStroke(m_indexes[i])->outlineOptions());
	}
	if (!beforeModify)
		m_newBBox = m_tool->getBBox();
}

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

void UndoChangeOutlineStyle::transform(const std::vector<TStroke::OutlineOptions> &options, FourPoints bbox) const
{
	TVectorImageP image = m_level->getFrame(m_frameId, true);
	assert(!!image);
	if (!image)
		return;
	int i;
	for (i = 0; i < (int)m_indexes.size(); i++) {
		int index = m_indexes[i];
		image->getStroke(index)->outlineOptions() = options[i];
	}
	if (!m_tool->isSelectionEmpty() && m_selectionCount == m_tool->getSelectionCount())
		m_tool->setBBox(bbox);
	else
		m_tool->computeBBox();
	m_tool->notifyImageChanged(m_frameId);
	TTool::getApplication()->getCurrentXsheet()->notifyXsheetChanged();
	TTool::getApplication()->getCurrentTool()->notifyToolChanged();
}

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

void UndoChangeOutlineStyle::undo() const
{
	transform(m_oldOptions, m_oldBBox);
	TTool::getApplication()->getCurrentTool()->notifyToolChanged();
}

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

void UndoChangeOutlineStyle::redo() const
{
	transform(m_newOptions, m_newBBox);
	TTool::getApplication()->getCurrentTool()->notifyToolChanged();
}

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

int UndoChangeOutlineStyle::getSize() const
{
	//NOTE: This is definitely wrong... sizeof(vector) DOES NOT correspond to its
	//actual size - as it is internally allocated with new!!
	return sizeof(*this) + sizeof(*m_tool);
}

//=============================================================================
// VectorDeformTool::VFDScopedBlock
//-----------------------------------------------------------------------------

struct VectorDeformTool::VFDScopedBlock //! Type bounding the scope of free deformers in the tool.
	{
	VFDScopedBlock(SelectionTool *tool) : m_tool(tool)
	{
		m_tool->setNewFreeDeformer();
	}
	~VFDScopedBlock() { m_tool->clearDeformers(); }

private:
	SelectionTool *m_tool; //!< [\p external]  Tool owning the deformers.
};

//=============================================================================
// VectorDeformTool
//-----------------------------------------------------------------------------

DragSelectionTool::VectorDeformTool::VectorDeformTool(VectorSelectionTool *tool)
	: DeformTool(tool), m_undo()
{
	if (!TTool::getApplication()->getCurrentObject()->isSpline()) {
		m_undo.reset(new UndoChangeStrokes(TTool::getApplication()->getCurrentLevel()->getSimpleLevel(),
										   tool->getCurrentFid(), tool, tool->strokeSelection()));
	}
}

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

DragSelectionTool::VectorDeformTool::~VectorDeformTool()
{
	// DO NOT REMOVE - DESTRUCTS TYPES INCOMPLETE IN THE HEADER
}

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

void DragSelectionTool::VectorDeformTool::applyTransform(FourPoints bbox)
{
	SelectionTool *tool = getTool();

	tcg::unique_ptr<VFDScopedBlock> localVfdScopedBlock;
	if (!m_vfdScopedBlock.get()) {
		tcg::unique_ptr<VFDScopedBlock> &vfdScopedBlock = m_isDragging ? m_vfdScopedBlock : localVfdScopedBlock;

		vfdScopedBlock.reset(new VFDScopedBlock(tool));
	}

	VectorFreeDeformer *freeDeformer = static_cast<VectorFreeDeformer *>(tool->getFreeDeformer());
	freeDeformer->setPoints(bbox.getP00(), bbox.getP10(), bbox.getP11(), bbox.getP01());
	freeDeformer->setComputeRegion(!m_isDragging);
	freeDeformer->setPreserveThickness(tool->isConstantThickness());
	freeDeformer->setFlip(isFlip());

	if (!TTool::getApplication()->getCurrentObject()->isSpline() && m_undo.get())
		m_undo->setFlip(isFlip());

	freeDeformer->deformImage();

	tool->invalidate();

	if (!m_isDragging)
		tool->notifyImageChanged();

	tool->m_deformValues.m_isSelectionModified = true;

	if (!m_isDragging && (tool->isLevelType() || tool->isSelectedFramesType()))
		transformWholeLevel();
}

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

void DragSelectionTool::VectorDeformTool::addTransformUndo()
{
	if (TTool::getApplication()->getCurrentObject()->isSpline())
		TUndoManager::manager()->add(new UndoPath(getTool()->getXsheet()->getStageObject(getTool()->getObjectId())->getSpline()));
	else if (m_undo.get()) {
		m_undo->registerStrokes();
		TUndoManager::manager()->add(m_undo.release());
	}
}

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

void DragSelectionTool::VectorDeformTool::transformWholeLevel()
{
	VectorSelectionTool *tool = dynamic_cast<VectorSelectionTool *>(m_tool);
	assert(tool);

	assert(!tool->levelSelection().isEmpty());

	TXshSimpleLevel *level = TTool::getApplication()->getCurrentLevel()->getSimpleLevel();

	std::vector<TFrameId> fids;
	level->getFids(fids);

	// Remove unwanted fids
	fids.erase(std::remove_if(fids.begin(), fids.end(), boost::bind(
															::currentOrNotSelected, boost::cref(*tool), _1)),
			   fids.end());

	TUndoManager::manager()->beginBlock();
	{
		addTransformUndo(); // For current frame

		int f, fCount = int(fids.size());
		for (f = 0; f != fCount; ++f) {
			const TFrameId &fid = fids[f];
			int t = f + 1; // Current frame's data is always at index 0
						   // The others are thus shifted by 1
			// Skip nonselected frames
			if (tool->getCurrentFid() == fid || (tool->isSelectedFramesType() && tool->getSelectedFrames().count(fid) == 0))
				continue;

			TVectorImageP vi = level->getFrame(fid, true);
			if (!vi)
				continue;

			tcg::unique_ptr<UndoChangeStrokes> undo(new UndoChangeStrokes(
				level, fid, tool, tool->levelSelection()));

			std::set<int> strokesIndices;

			for (int s = 0; s < (int)vi->getStrokeCount(); ++s)
				strokesIndices.insert(s);

			FourPoints bbox = tool->getBBox(t);

			VectorFreeDeformer *freeDeformer = static_cast<VectorFreeDeformer *>(tool->getFreeDeformer(t));
			freeDeformer->setPoints(bbox.getPoint(0), bbox.getPoint(1), bbox.getPoint(2), bbox.getPoint(3));
			freeDeformer->setComputeRegion(true);
			freeDeformer->setPreserveThickness(tool->isConstantThickness());
			freeDeformer->setFlip(isFlip());
			freeDeformer->deformImage();

			undo->registerStrokes();

			TUndoManager::manager()->add(undo.release());
		}
	}
	TUndoManager::manager()->endBlock();

	// Finally, notify changed frames
	std::for_each(fids.begin(), fids.end(), boost::bind(								  // NOTE: current frame is not here - it should be,
												&TTool::notifyImageChanged, m_tool, _1)); //       but it's currently unnecessary, in fact...

	// notifyImageChanged(fid) must be invoked OUTSIDE of the loop - since it seems to imply notifyImageChanged()
	// on CURRENT image - which seems wrong, but it's too low-level and I'm not changing it.
	// This reasonably leads to computeBBox(), but bboxes are taken as INPUT to this transformation...            >:(
}

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

bool DragSelectionTool::VectorDeformTool::isFlip()
{
	TPointD scaleValue = getTool()->m_deformValues.m_scaleValue;
	return m_startScaleValue.x * scaleValue.x < 0 || m_startScaleValue.y * scaleValue.y < 0;
}

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

void DragSelectionTool::VectorDeformTool::leftButtonUp(const TPointD &pos, const TMouseEvent &e)
{
	tcg::unique_ptr<VFDScopedBlock> vfdScopedBlock(m_vfdScopedBlock.release());

	SelectionTool *tool = getTool();
	VectorFreeDeformer *deformer = dynamic_cast<VectorFreeDeformer *>(tool->getFreeDeformer());
	if (!deformer)
		return;

	deformer->setComputeRegion(true);
	deformer->setFlip(isFlip());
	deformer->deformRegions();

	if (!tool->isLevelType() && !tool->isSelectedFramesType())
		addTransformUndo();
	else
		transformWholeLevel();

	m_isDragging = false;

	tool->notifyImageChanged();
}

//=============================================================================
// VectorRotationTool
//-----------------------------------------------------------------------------

DragSelectionTool::VectorRotationTool::VectorRotationTool(VectorSelectionTool *tool)
	: VectorDeformTool(tool), m_rotation(new Rotation(this))
{
}

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

void DragSelectionTool::VectorRotationTool::transform(TAffine aff, double angle)
{
	SelectionTool *tool = getTool();
	FourPoints newBbox(tool->getBBox() * aff);
	TPointD center = m_rotation->getStartCenter();
	int i;
	for (i = 0; i < tool->getBBoxsCount(); i++) {
		aff = TRotation(center, angle);
		tool->setBBox(tool->getBBox(i) * aff, i);
	}
	applyTransform(newBbox);
}

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

void DragSelectionTool::VectorRotationTool::leftButtonDrag(const TPointD &pos, const TMouseEvent &e)
{
	m_rotation->leftButtonDrag(pos, e);
}

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

void DragSelectionTool::VectorRotationTool::draw()
{
	m_rotation->draw();
}

//=============================================================================
// VectorFreeDeformTool
//-----------------------------------------------------------------------------

DragSelectionTool::VectorFreeDeformTool::VectorFreeDeformTool(VectorSelectionTool *tool)
	: VectorDeformTool(tool), m_freeDeform(new FreeDeform(this))
{
}

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

void DragSelectionTool::VectorFreeDeformTool::leftButtonDrag(const TPointD &pos, const TMouseEvent &e)
{
	m_freeDeform->leftButtonDrag(pos, e);
}

//=============================================================================
// VectorMoveSelectionTool
//-----------------------------------------------------------------------------

DragSelectionTool::VectorMoveSelectionTool::VectorMoveSelectionTool(VectorSelectionTool *tool)
	: VectorDeformTool(tool), m_moveSelection(new MoveSelection(this))
{
}

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

void DragSelectionTool::VectorMoveSelectionTool::transform(TAffine aff)
{
	SelectionTool *tool = getTool();
	int i;
	for (i = 0; i < (int)tool->getBBoxsCount(); i++)
		tool->setBBox(tool->getBBox(i) * aff, i);
	applyTransform(tool->getBBox());
	getTool()->setCenter(aff * tool->getCenter());
}

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

void DragSelectionTool::VectorMoveSelectionTool::leftButtonDown(const TPointD &pos, const TMouseEvent &e)
{
	m_moveSelection->leftButtonDown(pos, e);
	VectorDeformTool::leftButtonDown(pos, e);
}

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

void DragSelectionTool::VectorMoveSelectionTool::leftButtonDrag(const TPointD &pos, const TMouseEvent &e)
{
	if (norm2(pos - getStartPos()) > l_dragThreshold * getTool()->getPixelSize())
		m_moveSelection->leftButtonDrag(pos, e);
}

//=============================================================================
// VectorScaleTool
//-----------------------------------------------------------------------------

DragSelectionTool::VectorScaleTool::VectorScaleTool(VectorSelectionTool *tool, int type)
	: VectorDeformTool(tool), m_scale(new Scale(this, type))
{
}

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

TPointD DragSelectionTool::VectorScaleTool::transform(int index, TPointD newPos)
{
	SelectionTool *tool = getTool();
	TPointD scaleValue = tool->m_deformValues.m_scaleValue;

	std::vector<FourPoints> startBboxs = m_scale->getStartBboxs();
	TPointD center = m_scale->getStartCenter();
	FourPoints bbox = m_scale->bboxScaleInCenter(index, startBboxs[0], newPos, scaleValue, center, true);
	if (bbox == startBboxs[0])
		return scaleValue;

	bool scaleInCenter = m_scale->scaleInCenter();
	//Se non ho scalato rispetto al centro calcolo la posizione del nuovo centro
	if (!scaleInCenter)
		tool->setCenter(m_scale->getNewCenter(index, startBboxs[0], scaleValue));

	if (tool->isLevelType() || tool->isSelectedFramesType()) {
		int i;
		for (i = 1; i < (int)tool->getBBoxsCount(); i++) {
			FourPoints oldBbox = startBboxs[i];
			TPointD frameCenter = scaleInCenter ? center : oldBbox.getPoint(getSimmetricPointIndex(index));
			TPointD newp = m_scale->getScaledPoint(index, oldBbox, scaleValue, frameCenter);
			FourPoints newBbox = m_scale->bboxScaleInCenter(index, oldBbox, newp, scaleValue, frameCenter, false);
			tool->setBBox(newBbox, i);
			if (!scaleInCenter)
				tool->setCenter(m_scale->getNewCenter(index, oldBbox, scaleValue), i);
		}
	}
	tool->setBBox(bbox);
	applyTransform(bbox);
	return scaleValue;
}

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

void DragSelectionTool::VectorScaleTool::leftButtonDown(const TPointD &pos, const TMouseEvent &e)
{
	m_scale->leftButtonDown(pos, e);
	VectorDeformTool::leftButtonDown(pos, e);
}

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

void DragSelectionTool::VectorScaleTool::leftButtonDrag(const TPointD &pos, const TMouseEvent &e)
{
	m_scale->leftButtonDrag(pos, e);
}

//=============================================================================
// VectorChangeThicknessTool
//-----------------------------------------------------------------------------

DragSelectionTool::VectorChangeThicknessTool::VectorChangeThicknessTool(VectorSelectionTool *tool)
	: DragTool(tool), m_curPos(), m_firstPos(), m_thicknessChange(0)
{
	TVectorImageP vi = tool->getImage(false);
	assert(vi);

	setStrokesThickness(*vi);

	TXshSimpleLevel *level = TTool::getApplication()->getCurrentLevel()->getSimpleLevel();
	m_undo.reset(new UndoChangeStrokes(level, tool->getCurrentFid(), tool,
									   tool->strokeSelection()));
}

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

VectorChangeThicknessTool::~VectorChangeThicknessTool()
{
}

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

namespace
{
namespace SetStrokeThickness
{

using namespace DragSelectionTool;

struct Data {
	VectorChangeThicknessTool &m_tool;
	const TVectorImage &m_vi;
};
}
} // setStrokeThickness

void DragSelectionTool::VectorChangeThicknessTool::setStrokesThickness(TVectorImage &vi)
{
	struct locals {

		static void setThickness(
			const SetStrokeThickness::Data &data, int s)
		{
			const TStroke &stroke = *data.m_vi.getStroke(s);

			std::vector<double> strokeThickness;

			int cp, cpCount = stroke.getControlPointCount();
			strokeThickness.reserve(cpCount);

			for (cp = 0; cp != cpCount; ++cp)
				strokeThickness.push_back(stroke.getControlPoint(cp).thick);

			data.m_tool.m_strokesThickness[s] = strokeThickness;
		}

	}; // locals

	SetStrokeThickness::Data data = {*this, vi};

	VectorSelectionTool *vsTool = static_cast<VectorSelectionTool *>(m_tool);
	const LevelSelection &levelSelection = vsTool->levelSelection();

	if (levelSelection.isEmpty()) {
		StrokeSelection *strokeSelection = static_cast<StrokeSelection *>(m_tool->getSelection());
		const std::set<int> &selectedStrokeIdxs = strokeSelection->getSelection();

		std::for_each(selectedStrokeIdxs.begin(), selectedStrokeIdxs.end(),
					  boost::bind(locals::setThickness, boost::cref(data), _1));
	} else {
		std::vector<int> strokeIdxs = getSelectedStrokes(vi, levelSelection);

		std::for_each(strokeIdxs.begin(), strokeIdxs.end(),
					  boost::bind(locals::setThickness, boost::cref(data), _1));
	}
}

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

namespace
{
namespace ChangeImageThickness
{

using namespace DragSelectionTool;

struct Data {
	VectorChangeThicknessTool &m_tool;
	TVectorImage &m_vi;
	double m_newThickness;
};
}
}

void DragSelectionTool::VectorChangeThicknessTool::changeImageThickness(TVectorImage &vi, double newThickness)
{
	struct locals {

		static void changeThickness(
			const ChangeImageThickness::Data &data, int s)
		{
			TStroke &stroke = *data.m_vi.getStroke(s);

			for (int cp = 0; cp < (int)stroke.getControlPointCount(); ++cp) {
				double thickness = tcrop(
					data.m_tool.m_strokesThickness[s][cp] + data.m_newThickness,
					0.0, 255.0);

				TThickPoint point(TPointD(stroke.getControlPoint(cp)),
								  thickness);

				stroke.setControlPoint(cp, point);
			}
		}

	}; // locals

	ChangeImageThickness::Data data = {*this, vi, newThickness};

	VectorSelectionTool *vsTool = static_cast<VectorSelectionTool *>(getTool());
	const LevelSelection &levelSelection = vsTool->levelSelection();

	if (levelSelection.isEmpty()) {
		StrokeSelection *strokeSelection = static_cast<StrokeSelection *>(m_tool->getSelection());
		const std::set<int> &selectedStrokeIdxs = strokeSelection->getSelection();

		std::for_each(selectedStrokeIdxs.begin(), selectedStrokeIdxs.end(),
					  boost::bind(locals::changeThickness, boost::ref(data), _1));
	} else {
		std::vector<int> strokeIdxs = getSelectedStrokes(vi, levelSelection);

		std::for_each(strokeIdxs.begin(), strokeIdxs.end(),
					  boost::bind(locals::changeThickness, boost::ref(data), _1));
	}
}

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

void DragSelectionTool::VectorChangeThicknessTool::addUndo()
{
	TVectorImageP curVi = getTool()->getImage(true);
	if (!curVi)
		return;

	m_undo->registerStrokes();

	SelectionTool *tool = getTool();
	if (tool->isLevelType() || tool->isSelectedFramesType()) {
		VectorSelectionTool *vtool = dynamic_cast<VectorSelectionTool *>(tool);
		assert(vtool && !vtool->levelSelection().isEmpty());

		TXshSimpleLevel *level = TTool::getApplication()->getCurrentLevel()->getSimpleLevel();

		// Retrieve frames available in the level
		std::vector<TFrameId> fids;
		level->getFids(fids);

		// Remove unwanted frames
		fids.erase(std::remove_if(fids.begin(), fids.end(), boost::bind(
																::currentOrNotSelected, boost::cref(*vtool), _1)),
				   fids.end());

		TUndoManager::manager()->beginBlock();
		{
			// Current frame added separately
			TUndoManager::manager()->add(m_undo.release()); // Inside an undo block

			// Iterate remaining ones
			int f, fCount = int(fids.size());
			for (f = 0; f != fCount; ++f) {
				const TFrameId &fid = fids[f];

				TVectorImageP vi = level->getFrame(fid, true);
				if (!vi) {
					assert(vi);
					continue;
				}

				// Transform fid's selection
				tcg::unique_ptr<UndoChangeStrokes> undo(new UndoChangeStrokes(
					level, fid, vtool, vtool->levelSelection()));

				setStrokesThickness(*vi);
				changeImageThickness(*vi, m_thicknessChange);

				m_strokesThickness.clear();
				undo->registerStrokes();

				TUndoManager::manager()->add(undo.release());
			}
		}
		TUndoManager::manager()->endBlock();

		// Finally, notify changed frames
		std::for_each(fids.begin(), fids.end(), boost::bind(								  // NOTE: current frame is not here - it was
													&TTool::notifyImageChanged, m_tool, _1)); //       aldready notified
	} else
		TUndoManager::manager()->add(m_undo.release()); // Outside any undo block
}

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

void DragSelectionTool::VectorChangeThicknessTool::leftButtonDown(const TPointD &pos, const TMouseEvent &e)
{
	m_curPos = pos;
	m_firstPos = pos;
}

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

void DragSelectionTool::VectorChangeThicknessTool::leftButtonDrag(const TPointD &pos, const TMouseEvent &e)
{
	TAffine aff;
	TPointD delta = pos - m_curPos;
	TVectorImageP vi = getTool()->getImage(true);
	if (!vi)
		return;
	m_thicknessChange = (pos.y - m_firstPos.y) * 0.2;
	changeImageThickness(*vi, m_thicknessChange);
	getTool()->m_deformValues.m_maxSelectionThickness = m_thicknessChange;
	getTool()->computeBBox();
	getTool()->invalidate();
	m_curPos = pos;
	getTool()->notifyImageChanged();
	TTool::getApplication()->getCurrentTool()->notifyToolChanged();
}

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

void DragSelectionTool::VectorChangeThicknessTool::leftButtonUp(const TPointD &pos, const TMouseEvent &e)
{
	TVectorImageP curVi = getTool()->getImage(true);
	if (!curVi)
		return;
	addUndo();
	m_strokesThickness.clear();
}

//=============================================================================
namespace
{
//-----------------------------------------------------------------------------

bool getGroupBBox(const TVectorImage &vi, int strokeIndex, TRectD &gBox)
{
	if (!vi.isStrokeGrouped(strokeIndex))
		return false;

	gBox = vi.getStroke(strokeIndex)->getBBox();

	int s, sCount = int(vi.getStrokeCount());
	for (s = 0; s != sCount; ++s) {
		if (vi.sameGroup(s, strokeIndex))
			gBox += vi.getStroke(s)->getBBox();
	}

	return true;
}

//=============================================================================
// UndoEnterGroup
//-----------------------------------------------------------------------------

class UndoEnterGroup : public TUndo
{
	int m_strokeIndex;
	TVectorImageP m_vi;

public:
	UndoEnterGroup(TVectorImageP vi, int strokeIndex)
		: m_vi(vi), m_strokeIndex(strokeIndex)
	{
	}
	void undo() const
	{
		m_vi->exitGroup();
		TTool::getApplication()->getCurrentXsheet()->notifyXsheetChanged();
	}
	void redo() const
	{
		m_vi->enterGroup(m_strokeIndex);
		TTool::getApplication()->getCurrentXsheet()->notifyXsheetChanged();
	}
	int getSize() const { return sizeof(*this); }
};

//=============================================================================
// UndoExitGroup
//-----------------------------------------------------------------------------

class UndoExitGroup : public TUndo
{
	int m_strokeIndex;
	TVectorImageP m_vi;

public:
	UndoExitGroup(TVectorImageP vi, int strokeIndex)
		: m_vi(vi), m_strokeIndex(strokeIndex)
	{
	}
	void undo() const
	{
		m_vi->enterGroup(m_strokeIndex);
		TTool::getApplication()->getCurrentXsheet()->notifyXsheetChanged();
	}
	void redo() const
	{
		m_vi->exitGroup();
		TTool::getApplication()->getCurrentXsheet()->notifyXsheetChanged();
	}

	int getSize() const { return sizeof(*this); }
};

} //namespace

//=============================================================================
// VectorSelectionTool
//-----------------------------------------------------------------------------

VectorSelectionTool::VectorSelectionTool(int targetType)
	: SelectionTool(targetType), m_selectionTarget("Mode:"), m_constantThickness("Preserve Thickness", false), m_levelSelection(m_strokeSelection), m_capStyle("Cap"), m_joinStyle("Join"), m_miterJoinLimit("Miter:", 0, 100, 4), m_selectionCount(0), m_canEnterGroup(true)
{
	if (targetType == TTool::Vectors) {
#ifndef STUDENT
		m_prop.bind(m_selectionTarget);
		m_prop.bind(m_constantThickness);
#endif

		m_selectionTarget.addValue(NORMAL_TYPE);
		m_selectionTarget.addValue(SELECTED_FRAMES_TYPE);
		m_selectionTarget.addValue(ALL_LEVEL_TYPE);
		m_selectionTarget.addValue(SAME_STYLE_TYPE);
		m_selectionTarget.addValue(STYLE_SELECTED_FRAMES_TYPE);
		m_selectionTarget.addValue(STYLE_LEVEL_TYPE);
		m_selectionTarget.addValue(BOUNDARY_TYPE);
		m_selectionTarget.addValue(BOUNDARY_SELECTED_FRAMES_TYPE);
		m_selectionTarget.addValue(BOUNDARY_LEVEL_TYPE);
	}

	m_strokeSelection.setView(this);

	m_constantThickness.setId("PreserveThickness");
	m_selectionTarget.setId("SelectionMode");

	m_capStyle.addValue(BUTT_WSTR);
	m_capStyle.addValue(ROUNDC_WSTR);
	m_capStyle.addValue(PROJECTING_WSTR);
	m_capStyle.setId("Cap");

	m_joinStyle.addValue(MITER_WSTR);
	m_joinStyle.addValue(ROUNDJ_WSTR);
	m_joinStyle.addValue(BEVEL_WSTR);
	m_joinStyle.setId("Join");

	m_miterJoinLimit.setId("Miter");

	m_outlineProps.bind(m_capStyle);
	m_outlineProps.bind(m_joinStyle);
	m_outlineProps.bind(m_miterJoinLimit);
}

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

void VectorSelectionTool::setNewFreeDeformer()
{
	clearDeformers();

	TVectorImageP vi = getImage(true); // BAD: Should not be done at tool creation...
	if (!vi)
		return;

	// Current freeDeformer always at index 0
	m_freeDeformers.push_back(new VectorFreeDeformer(vi, m_strokeSelection.getSelection()));

	if (isLevelType() || isSelectedFramesType()) {
		TXshSimpleLevel *level = TTool::getApplication()->getCurrentLevel()->getSimpleLevel();

		// All SELECTED frames' subsequent freeDeformers are stored sequentially after that
		std::vector<TFrameId> fids;
		level->getFids(fids);

		fids.erase(std::remove_if(fids.begin(), fids.end(), boost::bind(
																::currentOrNotSelected, boost::cref(*this), _1)),
				   fids.end());

		std::vector<TFrameId>::iterator ft, fEnd = fids.end();
		for (ft = fids.begin(); ft != fEnd; ++ft) {
			if (TVectorImageP levelVi = level->getFrame(*ft, false)) {
				const std::vector<int> &selectedStrokeIdxs = ::getSelectedStrokes(*levelVi, m_levelSelection);
				std::set<int> strokesIndices(selectedStrokeIdxs.begin(), selectedStrokeIdxs.end());

				m_freeDeformers.push_back(new VectorFreeDeformer(levelVi, strokesIndices));
			}
		}
	}
}

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

bool VectorSelectionTool::isLevelType() const
{
	return m_levelSelection.framesMode() == LevelSelection::FRAMES_ALL;
}

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

bool VectorSelectionTool::isSelectedFramesType() const
{
	return m_levelSelection.framesMode() == LevelSelection::FRAMES_SELECTED;
}

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

bool VectorSelectionTool::isSameStyleType() const
{
	return m_levelSelection.filter() == LevelSelection::SELECTED_STYLES;
}

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

bool VectorSelectionTool::isModifiableSelectionType() const
{
	return (m_levelSelection.isEmpty() || m_levelSelection.filter() == LevelSelection::SELECTED_STYLES);
}

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

void VectorSelectionTool::updateTranslation()
{
	m_selectionTarget.setQStringName(tr("Mode:"));
	m_constantThickness.setQStringName(tr("Preserve Thickness"));
	m_capStyle.setQStringName(tr("Cap"));
	m_joinStyle.setQStringName(tr("Join"));
	m_miterJoinLimit.setQStringName(tr("Miter:"));
	SelectionTool::updateTranslation();
}

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

void VectorSelectionTool::updateSelectionTarget()
{
	// Make the correct selection current
	if (m_selectionTarget.getIndex() == NORMAL_TYPE_IDX) {
		std::set<int> selectedStrokes;							// Retain previously selected strokes across
		selectedStrokes.swap(m_strokeSelection.getSelection()); // current selection change

		m_strokeSelection.makeCurrent(); // Empties any (different) previously current
										 // selection on its own
		selectedStrokes.swap(m_strokeSelection.getSelection());
		return;
	}

	m_levelSelection.makeCurrent(); // Same here

	// Choose frames mode
	LevelSelection::FramesMode framesMode;
	switch (m_selectionTarget.getIndex()) {
	case SAME_STYLE_TYPE_IDX:
	case BOUNDARY_TYPE_IDX:
		framesMode = LevelSelection::FRAMES_CURRENT;

		CASE ALL_LEVEL_TYPE_IDX : case STYLE_LEVEL_TYPE_IDX : case BOUNDARY_LEVEL_TYPE_IDX : framesMode = LevelSelection::FRAMES_ALL;

		CASE SELECTED_FRAMES_TYPE_IDX : case STYLE_SELECTED_FRAMES_TYPE_IDX : case BOUNDARY_SELECTED_FRAMES_TYPE_IDX : framesMode = LevelSelection::FRAMES_SELECTED;
	}

	if (framesMode != m_levelSelection.framesMode())
		clearSelectedStrokes();

	m_levelSelection.framesMode() = framesMode;

	// Choose filter
	LevelSelection::Filter filter;
	switch (m_selectionTarget.getIndex()) {
	case SELECTED_FRAMES_TYPE_IDX:
	case ALL_LEVEL_TYPE_IDX: {
		filter = LevelSelection::WHOLE;
		selectedStyles().clear();
	}

		CASE SAME_STYLE_TYPE_IDX : case STYLE_SELECTED_FRAMES_TYPE_IDX : case STYLE_LEVEL_TYPE_IDX : filter = LevelSelection::SELECTED_STYLES;

		CASE BOUNDARY_TYPE_IDX : case BOUNDARY_SELECTED_FRAMES_TYPE_IDX : case BOUNDARY_LEVEL_TYPE_IDX:
		{
			filter = LevelSelection::BOUNDARY_STROKES;
			selectedStyles().clear();
		}
	}

	if (filter != m_levelSelection.filter())
		clearSelectedStrokes();

	m_levelSelection.filter() = filter;
}

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

void VectorSelectionTool::finalizeSelection()
{
	TVectorImageP vi = getImage(false);
	if (vi && !m_levelSelection.isEmpty()) {
		std::set<int> &selection = m_strokeSelection.getSelection();
		selection.clear();

		// Apply base additive selection
		if (!isSelectedFramesType() || m_selectedFrames.count(getCurrentFid())) {
			// Apply filters
			std::vector<int> selectedStrokes = getSelectedStrokes(*vi, m_levelSelection);
			std::set<int>(selectedStrokes.begin(), selectedStrokes.end()).swap(selection);
		}
	}

	computeBBox();

	TTool::getApplication()->getCurrentTool()->notifyToolChanged(); // Refreshes toolbar values
}

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

void VectorSelectionTool::clearSelectedStrokes()
{
	m_strokeSelection.selectNone();
	m_levelSelection.styles().clear();
	m_deformValues.reset();
}

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

void VectorSelectionTool::modifySelectionOnClick(TImageP image, const TPointD &pos, const TMouseEvent &e)
{
	TVectorImageP vi = TVectorImageP(image);
	assert(m_strokeSelection.getImage() == vi);

	if (!vi)
		return;

	updateSelectionTarget(); // Make selection current. This is necessary in case
							 // some other selection context made another selection current.
	m_firstPos = m_curPos = pos;
	m_selectingRect = FourPoints();
	m_selecting = false;
	m_justSelected = false;

	updateAction(pos, e);
	if (m_what != Inside && m_what != Outside && m_what != ADD_SELECTION)
		return;

	UINT index = 0;
	bool modifiableSel = isModifiableSelectionType(),
		 strokeAtPos = getStrokeIndexFromPos(index, vi, pos, getPixelSize()),
		 addStroke = strokeAtPos && !m_strokeSelection.isSelected(index),
		 toggleStroke = strokeAtPos && e.isShiftPressed();

	m_selecting = (modifiableSel && !strokeAtPos									   // There must be no stroke under cursor
				   && (e.isShiftPressed()											   // and either the user is explicitly performing additional selection
					   || (m_strokeSelectionType.getIndex() != POLYLINE_SELECTION_IDX) // or the tool support immediate selection on clear
					   || m_strokeSelection.isEmpty()));							   // or the strokes list was already cleared

	bool clearTargets = !(strokeAtPos || e.isShiftPressed() || m_selecting),
		 clearSelection = (addStroke || !strokeAtPos) && !e.isShiftPressed(),
		 selectionChanged = clearSelection;

	assert(clearTargets ? clearSelection : true);

	if (clearTargets)
		m_levelSelection.selectNone();

	if (clearSelection) {
		m_strokeSelection.selectNone();
		selectedStyles().clear(); // Targets are preserved here
	}

	if (strokeAtPos)
		selectionChanged = m_justSelected = selectStroke(index, toggleStroke);

	if (selectionChanged) {
		m_deformValues.reset(); // Resets selection values shown in the toolbar

		finalizeSelection();
		notifySelectionChanged();

		invalidate();
	}
}

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

void VectorSelectionTool::leftButtonDoubleClick(const TPointD &pos, const TMouseEvent &e)
{
	TVectorImageP vi = getImage(false);
	if (!vi)
		return;

	if (m_strokeSelectionType.getIndex() == POLYLINE_SELECTION_IDX &&
		!m_polyline.empty()) {
		closePolyline(pos);
		selectRegionVectorImage();

		m_selecting = false;
		invalidate();

		return;
	}

	int strokeIndex;
	if ((strokeIndex = vi->pickGroup(pos)) >= 0) {
		if (vi->canEnterGroup(strokeIndex) && m_canEnterGroup) {
			if (vi->enterGroup(strokeIndex)) {
				clearSelectedStrokes();
				TUndoManager::manager()->add(new UndoEnterGroup(vi, strokeIndex));
			}
		}
	} else if ((strokeIndex = vi->exitGroup()) >= 0)
		TUndoManager::manager()->add(new UndoExitGroup(vi, strokeIndex));

	finalizeSelection();
	invalidate();
}

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

void VectorSelectionTool::leftButtonDrag(const TPointD &pos, const TMouseEvent &e)
{
	if (m_dragTool) {
		m_dragTool->leftButtonDrag(pos, e);
		return;
	}

	TVectorImageP vi = getImage(false);
	if (!vi)
		return;

	double pixelSize = getPixelSize();
	TTool::Application *app = TTool::getApplication();
	if (!app || m_justSelected || !m_selecting || tdistance2(pos, m_curPos) < 9.0 * pixelSize * pixelSize)
		return;

	m_curPos = pos;

	if (m_strokeSelectionType.getIndex() == FREEHAND_SELECTION_IDX)
		freehandDrag(pos);
	else if (m_strokeSelectionType.getIndex() == RECT_SELECTION_IDX) {
		bool selectOverlappingStroke = (m_firstPos.x > pos.x);

		TRectD rect(m_firstPos, pos);
		m_selectingRect = rect;

		std::set<int> oldSelection;
		if (m_shiftPressed)
			oldSelection = m_strokeSelection.getSelection();

		clearSelectedStrokes();

		QMutexLocker lock(vi->getMutex());

		m_strokeSelection.setImage(vi); // >_<  Shouldn't be done here...?

		bool selectionChanged = false;

		int s, sCount = vi->getStrokeCount();
		for (s = 0; s != sCount; ++s) {
			if (!vi->isEnteredGroupStroke(s))
				continue;

			TStroke *stroke = vi->getStroke(s);

			if (m_strokeSelection.isSelected(s))
				continue;

			bool inSelection = selectOverlappingStroke ? rect.overlaps(stroke->getBBox()) : rect.contains(stroke->getBBox());

			if (inSelection || (m_shiftPressed && oldSelection.count(s)))
				selectionChanged = (selectStroke(s, false) || selectionChanged);
		}

		if (selectionChanged)
			finalizeSelection();

		invalidate();
	}
}

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

void VectorSelectionTool::leftButtonUp(const TPointD &pos, const TMouseEvent &e)
{
	m_leftButtonMousePressed = false;
	m_shiftPressed = false;

	if (m_dragTool) {
		m_dragTool->leftButtonUp(pos, e);
		delete m_dragTool;
		m_dragTool = 0;
		invalidate();
		return;
	}

	if (!m_selecting)
		return;

	// Complete selection
	TVectorImageP vi = getImage(false);

	if (vi) {
		if (m_strokeSelectionType.getIndex() == RECT_SELECTION_IDX)
			notifySelectionChanged();
		else if (m_strokeSelectionType.getIndex() == FREEHAND_SELECTION_IDX) {
			QMutexLocker lock(vi->getMutex());

			closeFreehand(pos);

			if (m_stroke->getControlPointCount() > 3)
				selectRegionVectorImage();

			delete m_stroke; // >:(
			m_stroke = 0;
		}
	}

	m_selecting = false;
	m_justSelected = false;
	invalidate();
}

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

void VectorSelectionTool::addContextMenuItems(QMenu *menu)
{
	menu->addAction(CommandManager::instance()->getAction(MI_RemoveEndpoints));
	menu->addSeparator();

	m_strokeSelection.getGroupCommand()->addMenuItems(menu);
}

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

void VectorSelectionTool::drawInLevelType(const TVectorImage &vi)
{
	glPushMatrix();

	FourPoints bbox = getBBox();
	if (!bbox.isEmpty()) {
		TPixel32 frameColor(127, 127, 127);
		double pixelSize = getPixelSize();

		drawFourPoints(bbox, TPixel32::Black, 0x5555, true);
		drawFourPoints(bbox.enlarge(pixelSize * (-4)), frameColor, 0xffff, true);
		drawFourPoints(bbox.enlarge(pixelSize * (-2)), frameColor, 0x8888, true);

		drawCommandHandle(&vi);
	}

	drawSelectedStrokes(vi);

	if (m_selecting && !m_selectingRect.isEmpty())
		drawRectSelection(&vi);

	if (m_strokeSelectionType.getIndex() == POLYLINE_SELECTION_IDX)
		drawPolylineSelection();

	glPopMatrix();
}

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

void VectorSelectionTool::drawSelectedStrokes(const TVectorImage &vi)
{
	glEnable(GL_LINE_STIPPLE);

	double pixelSize = getPixelSize();

	int s, sCount = vi.getStrokeCount();
	for (s = 0; s != sCount; ++s) {
		if (m_strokeSelection.isSelected(s)) {
			TStroke *stroke = vi.getStroke(s);

			glLineStipple(1, 0xF0F0);
			tglColor(TPixel32::Black);
			drawStrokeCenterline(*stroke, pixelSize);

			glLineStipple(1, 0x0F0F);
			tglColor(TPixel32::White);
			drawStrokeCenterline(*stroke, pixelSize);
		}
	}

	glDisable(GL_LINE_STIPPLE);
}

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

void VectorSelectionTool::drawGroup(const TVectorImage &vi)
{
	int s, sCount = vi.getStrokeCount();
	for (s = 0; s != sCount; ++s) {
		if (m_strokeSelection.isSelected(s)) {
			TRectD gBox;
			if (getGroupBBox(vi, s, gBox))
				drawRect(gBox, TPixel::Blue, 0xffff);
		}
	}
}

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

void VectorSelectionTool::draw()
{
	TVectorImageP vi = getImage(false);
	if (!vi)
		return;

	if (isLevelType() || isSelectedFramesType()) {
		drawInLevelType(*vi);
		return;
	}

	glPushMatrix();

	if (m_strokeSelection.isEmpty())		// o_o  WTF!?
		m_bboxs.clear(), m_centers.clear(); //

	// common draw
	if (getBBoxsCount() > 0)
		drawCommandHandle(vi.getPointer());

	if (m_selecting && !m_selectingRect.isEmpty())
		drawRectSelection(vi.getPointer());

	TRectD bbox = vi->getBBox();
	TPixel32 frameColor(140, 140, 140);
	tglColor(frameColor);
	drawRect(bbox, frameColor, 0x5555, true);

	drawSelectedStrokes(*vi);

	if (m_strokeSelectionType.getIndex() == POLYLINE_SELECTION_IDX)
		drawPolylineSelection();

	if (m_levelSelection.isEmpty())
		drawGroup(*vi);

	glPopMatrix();
}

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

TSelection *VectorSelectionTool::getSelection()
{
	TImage *image = getImage(false);
	TVectorImageP vi = image;
	if (!vi)
		return 0;

	return &m_strokeSelection;
}

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

bool VectorSelectionTool::isSelectionEmpty()
{
	TVectorImageP vi = getImage(false); // We want at least current image to be visible.
	if (!vi)							// This is somewhat in line to preventing tool actions
		return true;					// on non-visible levels.

	return m_strokeSelection.isEmpty(); // Same here, something should be visibly selected.
}

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

void VectorSelectionTool::computeBBox()
{
	m_bboxs.clear();
	m_centers.clear();

	TVectorImageP vi = getImage(false);
	if (!vi)
		return;

	if (isLevelType() || isSelectedFramesType()) {
		double maxThickness = 0;

		// Calculate current image's bbox - it is always the first one (index 0)
		if (vi && (isLevelType() || m_selectedFrames.count(getCurrentFid()) > 0)) {
			FourPoints bbox = getFourPointsFromVectorImage(vi, selectedStyles(), maxThickness);

			m_bboxs.push_back(bbox);
			m_centers.push_back((bbox.getP00() + bbox.getP11()) * 0.5);
		}

		// All subsequent SELECTED frames' bboxes come sequentially starting from 1
		if (TXshSimpleLevel *level = TTool::getApplication()->getCurrentLevel()->getSimpleLevel()) {
			std::vector<TFrameId> fids;
			level->getFids(fids);

			for (int i = 0; i < (int)fids.size(); ++i) {
				if (getCurrentFid() == fids[i] || (isSelectedFramesType() && m_selectedFrames.count(fids[i]) == 0))
					continue;

				TVectorImageP vi = level->getFrame(fids[i], false);
				if (!vi)
					continue;

				FourPoints p = getFourPointsFromVectorImage(vi, selectedStyles(), maxThickness);

				m_bboxs.push_back(p);
				m_centers.push_back(0.5 * (p.getP00() + p.getP11()));
				m_deformValues.m_maxSelectionThickness = maxThickness;
			}
		}
	} else if (vi) {
		TRectD newBbox;
		double maxThickness = 0;

		for (int i = 0; i < (int)vi->getStrokeCount(); i++) {
			TStroke *stroke = vi->getStroke(i);

			if (m_strokeSelection.isSelected(i)) {
				newBbox += stroke->getBBox();

				for (int j = 0; j < stroke->getControlPointCount(); j++) {
					double thick = stroke->getControlPoint(j).thick;
					if (maxThickness < thick)
						maxThickness = thick;
				}
			}
		}

		m_deformValues.m_maxSelectionThickness = maxThickness;
		FourPoints bbox;
		bbox = newBbox;
		m_bboxs.push_back(bbox);
		m_centers.push_back(0.5 * (bbox.getP11() + bbox.getP00()));
	}

	++m_selectionCount;
}

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

bool VectorSelectionTool::selectStroke(int index, bool toggle)
{
	TVectorImageP vi = getImage(false);
	assert(vi);
	assert(m_strokeSelection.getImage() == vi);

	if (!vi->isEnteredGroupStroke(index)) // If index is not in current group
		return false;

	if (index < 0 || index >= int(vi->getStrokeCount())) // Should be asserted...
		return false;

	bool wasSelected = m_strokeSelection.isSelected(index),
		 selectState = !(wasSelected && toggle);

	// (De)Select additional strokes related to ours
	std::set<int> &selectedStyles = this->selectedStyles();

	if (isSameStyleType()) // Color selection
	{
		TStroke *refStroke = vi->getStroke(index);
		assert(refStroke);

		int style = refStroke->getStyle();

		if (selectState)
			selectedStyles.insert(style);
		else
			selectedStyles.erase(style);
	} else if (vi->isStrokeGrouped(index) && vi->selectable(index)) // Group selection
	{
		int s, sCount = vi->getStrokeCount();
		for (s = 0; s != sCount; ++s) {
			if (vi->selectable(s) && vi->sameSubGroup(index, s))
				m_strokeSelection.select(s, selectState);
		}
	} else // Single stroke selection
		m_strokeSelection.select(index, selectState);

	return (selectState != wasSelected);
}

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

void VectorSelectionTool::onActivate()
{
	if (m_firstTime) {
		m_constantThickness.setValue(l_strokeSelectConstantThickness ? 1 : 0);
		m_strokeSelection.setSceneHandle(TTool::getApplication()->getCurrentScene());
	}

	SelectionTool::onActivate();
}

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

void VectorSelectionTool::onDeactivate()
{
	if (isLevelType())
		return;

	SelectionTool::onDeactivate();
}

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

void VectorSelectionTool::doOnActivate()
{
	TVectorImageP vi = getImage(false);
	m_strokeSelection.setImage(vi);

	updateSelectionTarget();

	finalizeSelection();
	invalidate();
}

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

void VectorSelectionTool::onImageChanged()
{
	TVectorImageP vi = getImage(false);
	TVectorImageP selectedImg = m_strokeSelection.getImage();

	if (vi != selectedImg) {
		m_strokeSelection.selectNone();
		m_strokeSelection.setImage(vi);

		if (!(vi && selectedImg)							  // Retain the styles selection ONLY
			|| vi->getPalette() != selectedImg->getPalette()) // if palettes still match
			selectedStyles().clear();
	} else {
		// Remove any eventual stroke index outside the valid range
		if (!m_strokeSelection.isEmpty()) {
			const std::set<int> &indexes = m_strokeSelection.getSelection();
			int strokesCount = selectedImg->getStrokeCount();

			std::set<int>::const_iterator it;
			for (it = indexes.begin(); it != indexes.end(); ++it) {
				int index = *it;

				if (index >= strokesCount)
					m_strokeSelection.select(index, false);
			}
		}
	}

	finalizeSelection();
}

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

void VectorSelectionTool::doOnDeactivate()
{
	m_strokeSelection.selectNone();
	m_levelSelection.selectNone();
	m_deformValues.reset();

	m_polyline.clear();

	TTool::getApplication()->getCurrentSelection()->setSelection(0);

	invalidate();
}

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

TPropertyGroup *VectorSelectionTool::getProperties(int idx)
{
	switch (idx) {
	case 0:
		return &m_prop;
	case 1:
		return &m_outlineProps;
	default:
		return 0;
	};
}

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

bool VectorSelectionTool::onPropertyChanged(string propertyName)
{
	if (SelectionTool::onPropertyChanged(propertyName))
		return true;

	if (propertyName == m_constantThickness.getName())
		l_strokeSelectConstantThickness = (int)(m_constantThickness.getValue());
	else if (propertyName == m_selectionTarget.getName())
		doOnActivate();
	else if (propertyName == m_capStyle.getName()) {
		if (m_strokeSelection.isEmpty())
			return true;

		TXshSimpleLevel *level = TTool::getApplication()->getCurrentLevel()->getSimpleLevel();
		UndoChangeOutlineStyle *undo = new UndoChangeOutlineStyle(level, getCurrentFid(), this);

		int newCapStyle = m_capStyle.getIndex();

		TVectorImageP vi = m_strokeSelection.getImage();

		const std::set<int> &indices = m_strokeSelection.getSelection();

		std::set<int>::iterator it;
		for (it = indices.begin(); it != indices.end(); ++it) {
			TStroke *stroke = vi->getStroke(*it);

			stroke->outlineOptions().m_capStyle = (TStroke::OutlineOptions::CapStyle)newCapStyle;
			stroke->invalidate();
		}

		computeBBox();
		invalidate();

		level->setDirtyFlag(true);

		undo->registerStrokes();
		TUndoManager::manager()->add(undo);

		notifyImageChanged();
	} else if (propertyName == m_joinStyle.getName()) {
		if (m_strokeSelection.isEmpty())
			return true;

		TXshSimpleLevel *level = TTool::getApplication()->getCurrentLevel()->getSimpleLevel();
		UndoChangeOutlineStyle *undo = new UndoChangeOutlineStyle(level, getCurrentFid(), this);

		int newJoinStyle = m_joinStyle.getIndex();

		TVectorImageP vi = m_strokeSelection.getImage();

		const std::set<int> &indices = m_strokeSelection.getSelection();

		std::set<int>::iterator it;
		for (it = indices.begin(); it != indices.end(); ++it) {
			TStroke *stroke = vi->getStroke(*it);

			stroke->outlineOptions().m_joinStyle = (TStroke::OutlineOptions::JoinStyle)newJoinStyle;
			stroke->invalidate();
		}

		computeBBox();
		invalidate();

		level->setDirtyFlag(true);

		undo->registerStrokes();
		TUndoManager::manager()->add(undo);

		notifyImageChanged();
	} else if (propertyName == m_miterJoinLimit.getName()) {
		if (m_strokeSelection.isEmpty())
			return true;

		TXshSimpleLevel *level = TTool::getApplication()->getCurrentLevel()->getSimpleLevel();
		UndoChangeOutlineStyle *undo = new UndoChangeOutlineStyle(level, getCurrentFid(), this);

		int upper = m_miterJoinLimit.getValue();

		TVectorImageP vi = m_strokeSelection.getImage();

		const std::set<int> &indices = m_strokeSelection.getSelection();

		std::set<int>::iterator it;
		for (it = indices.begin(); it != indices.end(); ++it) {
			TStroke *stroke = vi->getStroke(*it);

			stroke->outlineOptions().m_miterUpper = upper;
			stroke->invalidate();
		}

		computeBBox();
		invalidate();

		level->setDirtyFlag(true);

		undo->registerStrokes();
		TUndoManager::manager()->add(undo);

		notifyImageChanged();
	} else
		return false;

	return true;
}

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

void VectorSelectionTool::selectionOutlineStyle(int &capStyle, int &joinStyle)
{
	//Check the selection's outline style group validity
	const std::set<int> &selection = m_strokeSelection.getSelection();
	if (selection.empty()) {
		capStyle = joinStyle = -1;
		return;
	}

	TVectorImageP vi = m_strokeSelection.getImage();
	const TStroke::OutlineOptions &beginOptions =
		vi->getStroke(*selection.begin())->outlineOptions();

	capStyle = beginOptions.m_capStyle;
	joinStyle = beginOptions.m_joinStyle;

	std::set<int>::const_iterator it;
	for (it = selection.begin(); it != selection.end(); ++it) {
		const TStroke::OutlineOptions &options = vi->getStroke(*it)->outlineOptions();

		if (capStyle != options.m_capStyle)
			capStyle = -1;
		if (joinStyle != options.m_joinStyle)
			joinStyle = -1;
		if (capStyle < 0 && joinStyle < 0)
			return;
	}
}

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

void VectorSelectionTool::selectRegionVectorImage()
{
	if (!m_stroke)
		return;

	TVectorImageP vi(getImage(false));
	if (!vi)
		return;

	m_strokeSelection.setImage(vi);

	TVectorImage selectImg;
	selectImg.addStroke(new TStroke(*m_stroke));
	selectImg.findRegions();

	int sCount = int(vi->getStrokeCount()),
		rCount = int(selectImg.getRegionCount());

	bool selectionChanged = false;

	for (int s = 0; s != sCount; ++s) {
		TStroke *currentStroke = vi->getStroke(s);

		for (int r = 0; r != rCount; ++r) {
			TRegion *region = selectImg.getRegion(r);

			if (region->contains(*currentStroke, true))
				selectionChanged = selectStroke(s, false) || selectionChanged;
		}
	}

	if (selectionChanged) {
		finalizeSelection();
		notifySelectionChanged();
		invalidate();
	}
}

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

void VectorSelectionTool::updateAction(TPointD pos, const TMouseEvent &e)
{
	TImageP image = getImage(false);
	TVectorImageP vi = (TVectorImageP)image;
	if (!vi)
		return;

	SelectionTool::updateAction(pos, e);
	if (m_what != Outside || m_cursorId != ToolCursor::StrokeSelectCursor)
		return;

	FourPoints bbox = getBBox();
	UINT index = 0;

	if ((isLevelType() && bbox.contains(pos)) // What about isSelectedFramesType()??
		|| (getStrokeIndexFromPos(index, vi, pos, getPixelSize()) && m_strokeSelection.isSelected(index))) {
		m_what = Inside;
		m_cursorId = isLevelType() ? ToolCursor::LevelSelectCursor
								   : ToolCursor::MoveCursor;
	}
}

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

void VectorSelectionTool::onSelectedFramesChanged()
{
	if (isSelectedFramesType()) // False also in case m_levelSelection is not current
		finalizeSelection();
}