#include "tools/tool.h"

#include "tools/toolutils.h"

#include "tools/cursors.h"

#include "tproperty.h"

#include "tdata.h"

#include "tconvert.h"

#include "tgl.h"

#include "tstroke.h"

#include "tvectorimage.h"

#include "hookselection.h"

#include "tools/toolhandle.h"

#include "toonzqt/selection.h"

#include "toonz/tframehandle.h"

#include "toonz/txshlevelhandle.h"

#include "toonz/tscenehandle.h"

#include "toonz/txsheethandle.h"

#include "toonz/tcolumnhandle.h"

#include "toonz/hook.h"

#include "toonz/txshlevel.h"

#include "toonz/toonzscene.h"

#include "toonz/txsheet.h"

#include "toonz/txshcell.h"

#include "toonz/txshcolumn.h"

#include "toonz/tstageobjecttree.h"

#include "toonz/txshsimplelevel.h"

#include "toonz/levelproperties.h"

#include "toonz/toonzimageutils.h"

#include "toonz/dpiscale.h"

#include "toonz/onionskinmask.h"

#include "toonz/tonionskinmaskhandle.h"

#include <math.h></math.h>

// For Qt translation support

#include <qcoreapplication></qcoreapplication>

#include <qpainter></qpainter>

using namespace ToolUtils;

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

namespace {

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

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

// OtherHook

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

class OtherHook {

public:

  int m_columnIndex;

  int m_hookIndex;

  TPointD m_hookPos;

  OtherHook(int columnIndex, int hookIndex, const TPointD &hookPos)

      : m_columnIndex(columnIndex)

      , m_hookIndex(hookIndex)

      , m_hookPos(hookPos) {}

};

}  // namespace

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

// HookTool

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

class HookTool : public TTool {

  Q_DECLARE_TR_FUNCTIONS(HookTool)

  HookSelection m_selection;

  TPointD m_firstPos, m_lastPos;

  int m_hookId, m_hookSide;

  bool m_deselectArmed;

  HookUndo *m_undo;

  std::vector<otherhook> m_otherHooks;</otherhook>

  TPropertyGroup m_prop;

  TBoolProperty m_snappedActive;

  TPointD m_snappedPos;

  std::string m_snappedReason;

  TRectD m_shapeBBox;

  bool m_snapped, m_hookSetChanged;

  bool m_buttonDown;

  TPointD m_pivotOffset;

  void getOtherHooks(std::vector<otherhook> &otherHooks);</otherhook>

public:

  HookTool();

  ToolType getToolType() const override { return TTool::LevelReadTool; }

  HookSet *getHookSet() const;

  void updateTranslation() override;

  void draw() override;

  void leftButtonDown(const TPointD &pos, const TMouseEvent &e) override;

  void leftButtonDrag(const TPointD &pos, const TMouseEvent &e) override;

  void leftButtonUp(const TPointD &pos, const TMouseEvent &) override;

  void mouseMove(const TPointD &pos, const TMouseEvent &e) override;

  void onActivate() override;

  void onDeactivate() override;

  void onEnter() override;

  void onImageChanged() override {

    m_selection.selectNone();

    m_hookId = -1;

    m_otherHooks.clear();

    getOtherHooks(m_otherHooks);

    invalidate();

  }

  TPropertyGroup *getProperties(int targetType) override { return &m_prop; }

  int getCursorId() const override { return ToolCursor::MoveCursor; }

  void onSelectionChanged() { invalidate(); }

  bool select(const TSelection *) { return false; }

  bool pick(int &hookId, int &side, const TPointD &pos);

  bool snap(TPointD &pos, double &range2);

  bool isSnappedActive() const { return m_snappedActive.getValue(); }

  bool isEditingScene() const {

    return getApplication()->getCurrentFrame()->isEditingScene();

  }

  // pivot is the hook the level is attached to.

  // returns -1 if no pivot is defined.

  // Hook1 <==> index=0

  int getPivotIndex() {

    if (!isEditingScene())

      return -1;  // a pivot can be defined only when editing a scene

    std::string handle =

        getXsheet()->getStageObject(getObjectId())->getHandle();

    if (handle.find("H") != 0) return -1;

    return std::stoi(handle.substr(1)) - 1;

  }

  void drawHooks(HookSet *hookSet, const TFrameId &fid, bool isOnion);

  // other hooks are drawn in the current level reference frame

  // when the current matrix changes (e.g. because of a parent change or a

  // handle change)

  // we must recompute the hooks positions

  void updateMatrix() override {

    TTool::updateMatrix();

    m_otherHooks.clear();

    getOtherHooks(m_otherHooks);

  }

} hookTool;

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

HookTool::HookTool()

    : TTool("T_Hook")

    , m_hookId(-1)

    , m_hookSide(0)

    , m_deselectArmed(false)

    , m_undo(0)

    , m_snappedActive("Snap", true)  // W_ToolOptions_Snapped

    , m_snappedPos()

    , m_snappedReason("")

    , m_shapeBBox()

    , m_snapped(false)

    , m_hookSetChanged(false)

    , m_buttonDown(false)

    , m_pivotOffset() {

  bind(TTool::CommonLevels);

  m_prop.bind(m_snappedActive);

  m_snappedActive.setId("Snap");

}

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

void HookTool::updateTranslation() {

  m_snappedActive.setQStringName(tr("Snap"));

}

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

HookSet *HookTool::getHookSet() const {

  TXshLevel *xl = TTool::getApplication()->getCurrentLevel()->getLevel();

  if (!xl) return 0;

  return xl->getHookSet();

}

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

//

// search for hooks located on other columns (they are used as a reference)

// the position of hooks is computed in the current level reference frame

//

void HookTool::getOtherHooks(std::vector<otherhook> &otherHooks) {</otherhook>

  if (!getViewer()) return;

  TPointD dpi      = getViewer()->getDpiScale();

  TAffine myAffInv = (getCurrentColumnMatrix() * TScale(dpi.x, dpi.y)).inv();

  TXsheet *xsh     = getXsheet();

  int row          = getFrame();

  int curCol       = getColumnIndex();

  int i;

  for (i = 0; i < xsh->getColumnCount(); i++) {

    if (!xsh->getColumn(i) || !xsh->getColumn(i)->isCamstandVisible()) continue;

    if (i == curCol) continue;

    TXshCell cell = xsh->getCell(row, i);

    if (cell.isEmpty()) continue;

    TAffine aff =

        myAffInv * xsh->getPlacement(TStageObjectId::ColumnId(i), row);

    if (cell.getSimpleLevel())

      aff = aff * getDpiAffine(cell.getSimpleLevel(), cell.m_frameId, true);

    HookSet *hookSet = cell.m_level->getHookSet();

    int j;

    for (j = 0; j < hookSet->getHookCount(); j++) {

      Hook *hook = hookSet->getHook(j);

      if (hook == 0 || hook->isEmpty()) continue;

      TPointD aPos = aff * hook->getAPos(cell.m_frameId);

      TPointD bPos = aff * hook->getBPos(cell.m_frameId);

      otherHooks.push_back(OtherHook(i, j, aPos));

    }

  }

}

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

void HookTool::drawHooks(HookSet *hookSet, const TFrameId &fid, bool isOnion) {

  int pivotIndex = getPivotIndex();

  int i;

  for (i = 0; i < hookSet->getHookCount(); i++) {

    Hook *hook = hookSet->getHook(i);

    if (!hook || hook->isEmpty()) continue;

    assert(hook);

    TPointD p0 = hook->getAPos(fid);

    TPointD p1 = hook->getBPos(fid);

    if (pivotIndex == i) {

      // translating the pivot doesn't change its actual position, but just the

      // m_pivotOffset

      // the actual pivot position is changed in the mouseUp event

      p0 += m_pivotOffset;

      p1 += m_pivotOffset;

    }

    bool linked = p0 == p1;

    drawHook(p0, linked ? NormalHook : PassHookA, m_selection.isSelected(i, 1),

             isOnion);

    if (!linked) drawHook(p1, PassHookB, m_selection.isSelected(i, 2), isOnion);

  }

}

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

void HookTool::draw() {

  // ToolUtils::drawRect(TRectD(10,10,110,110), TPixel32(255,200,200), 0xFFF0);

  // draw the current image bounding box

  const double v200 = 200.0 / 255.0;

  TImageP image     = getImage(false);

  if (!image) return;

  TToonzImageP ti  = image;

  TVectorImageP vi = image;

  if (ti) {

    TRectD bbox =

        ToonzImageUtils::convertRasterToWorld(convert(ti->getBBox()), ti);

    ToolUtils::drawRect(bbox * ti->getSubsampling(), TPixel32(200, 200, 200),

                        0x5555);

  }

  if (vi) {

    TRectD bbox = vi->getBBox();

    ToolUtils::drawRect(bbox, TPixel32(200, 200, 200), 0x5555);

  }

  // draw hooks

  HookSet *hookSet = getHookSet();

  if (!hookSet) return;

  TTool::Application *app = TTool::getApplication();

  TFrameHandle *fh        = app->getCurrentFrame();

  TFrameId fid            = getCurrentFid();

  TXshSimpleLevel *level  = 0;

  OnionSkinMask osm = app->getCurrentOnionSkin()->getOnionSkinMask();

  std::vector<int> os;</int>

  if (isEditingScene())

    osm.getAll(getFrame(), os);

  else {

    level = app->getCurrentLevel()->getSimpleLevel();

    assert(level);

    osm.getAll(level->guessIndex(fid), os);

  }

  int i;

  if (osm.isEnabled())

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

      if (isEditingScene()) {

        const TXshCell &cell = getXsheet()->getCell(

            os[i], app->getCurrentColumn()->getColumnIndex());

        drawHooks(hookSet, cell.getFrameId(), true);

      } else {

        const TFrameId &fid2 = level->index2fid(os[i]);

        drawHooks(hookSet, fid2, true);

      }

    }

  drawHooks(hookSet, fid, false);

  // TXshCell cell = xsh->getCell(row, i);

  // draw other level hooks

  if (isSnappedActive() && isEditingScene()) {

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

      drawHook(m_otherHooks[i].m_hookPos, OtherLevelHook, false);

    }

  }

  // draw hooks balloons

  std::vector<trectd> balloons;  // this is used to avoid balloons overlapping</trectd>

  int pivotIndex = getPivotIndex();

  for (i = 0; i < hookSet->getHookCount(); i++) {

    Hook *hook = hookSet->getHook(i);

    if (!hook || hook->isEmpty()) continue;

    assert(hook);

    TPointD p0  = hook->getAPos(fid);

    TPointD p1  = hook->getBPos(fid);

    bool linked = p0 == p1;

    if (i == pivotIndex) {

      p0 += m_pivotOffset;

      p1 += m_pivotOffset;

    }

    TPixel32 balloonColor(200, 220, 205, 200);

    TPoint balloonOffset(20, 20);

    std::string hookName = std::to_string(i + 1);

    drawBalloon(p0, hookName, balloonColor, balloonOffset, false, &balloons);

    if (!linked)

      drawBalloon(p1, hookName, balloonColor, balloonOffset, false, &balloons);

  }

  // draw snapped hook balloon

  if (m_snappedReason != "") {

    TPointD pos = m_snappedPos;

    TRectD bbox = m_shapeBBox;

    if (bbox.getLx() > 0 && bbox.getLy() > 0) {

      glColor3d(v200, v200, v200);

      glEnable(GL_LINE_STIPPLE);

      glLineStipple(5, 0xAAAA);

      tglDrawRect(bbox);

      glDisable(GL_LINE_STIPPLE);

      glBegin(GL_LINES);

      glVertex2d(pos.x, bbox.y0);

      glVertex2d(pos.x, bbox.y1);

      glVertex2d(bbox.x0, pos.y);

      glVertex2d(bbox.x1, pos.y);

      glEnd();

      glDisable(GL_LINE_STIPPLE);

    }

    drawBalloon(pos, m_snappedReason, TPixel32(200, 250, 180, 200),

                TPoint(20, 20), false, &balloons);

  }

}

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

// side : 1=A,2=B,3=A&B

bool HookTool::pick(int &hookId, int &side, const TPointD &pos) {

  HookSet *hookSet = getHookSet();

  if (!hookSet) return false;

  TFrameId fid    = getCurrentFid();

  double minDist2 = 1e8;

  for (int i = 0; i < hookSet->getHookCount(); i++) {

    Hook *hook = hookSet->getHook(i);

    if (!hook || hook->isEmpty()) continue;

    TPointD aPos = hook->getAPos(fid);

    TPointD bPos = hook->getBPos(fid);

    bool linked  = aPos == bPos;

    if (linked) {

      double dist2 = tdistance2(pos, aPos);

      if (dist2 < minDist2) {

        minDist2 = dist2;

        hookId   = hook->getId();

        side     = 3;

      }

    } else {

      double aDist2 = tdistance2(pos, aPos);

      double bDist2 = tdistance2(pos, bPos);

      double dist2  = aDist2;

      int s         = 1;

      if (bDist2 < dist2) {

        dist2 = bDist2;

        s     = 2;

      }

      if (dist2 < minDist2) {

        minDist2 = dist2;

        hookId   = hook->getId();

        side     = s;

      }

    }

  }

  double pixelSize = getPixelSize();

  return minDist2 < 100 * pixelSize * pixelSize;

}

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

void HookTool::leftButtonDown(const TPointD &pos, const TMouseEvent &e) {

  TTool::Application *app = TTool::getApplication();

  if (!app) return;

  m_buttonDown = true;

  m_snapped    = false;

  TXshLevel *xl                          = app->getCurrentLevel()->getLevel();

  if (xl && xl->getSimpleLevel()) m_undo = new HookUndo(xl->getSimpleLevel());

  m_selection.setLevel(xl);

  m_firstPos = m_lastPos = pos;

  m_hookId = -1, m_hookSide = 0;

  m_deselectArmed = false;

  if (pick(m_hookId, m_hookSide, pos)) {

    if (m_hookSide == 3)  // ho cliccato su un cerchio-croce

    {

      if (e.isAltPressed())  // con l'alt voglio dividere

      {

        m_selection.selectNone();

        m_selection.select(m_hookId, 2);

      } else if (e.isCtrlPressed()) {

        // se sono tutti e due selezionati li deseleziono

        if (m_selection.isSelected(m_hookId, 1) &&

            m_selection.isSelected(m_hookId, 2)) {

          m_selection.unselect(m_hookId, 1);

          m_selection.unselect(m_hookId, 2);

        } else  // altrimenti li seleziono tutti e due

        {

          m_selection.select(m_hookId, 1);

          m_selection.select(m_hookId, 2);

        }

      } else {

        // senza control ne' shift ne' alt: se ho cliccato su un hook non

        // selezionato

        // deseleziono tutti gli altri e lo seleziono, altrimenti lascio tutto

        // com'e' e al buttonup se non c'e' stato movimento deseleziono gli

        // altri

        if (m_selection.isSelected(m_hookId, 1) ||

            m_selection.isSelected(m_hookId, 2))

          m_deselectArmed = true;

        else {

          m_selection.selectNone();

          m_selection.select(m_hookId, 1);

          m_selection.select(m_hookId, 2);

        }

      }

    } else  // ho cliccato o su un cerchio o su una croce

    {

      if (e.isCtrlPressed())

        m_selection.invertSelection(m_hookId, m_hookSide);

      else {

        m_selection.selectNone();

        m_selection.select(m_hookId, m_hookSide);

      }

    }

  } else {

    // non ho cliccato su nulla: con ctrl non faccio nulla, senza creo un nuovo

    // hook

    if (!e.isCtrlPressed()) {

      m_selection.selectNone();

      TFrameId fid     = getCurrentFid();

      HookSet *hookSet = getHookSet();

      if (hookSet && xl->getSimpleLevel() &&

          !xl->getSimpleLevel()->isReadOnly()) {

        Hook *hook       = hookSet->addHook();

        m_hookSetChanged = true;

        if (hook) {

          TPointD ppos(pos);

          if (m_snappedReason != "") {

            m_snapped = true;

            ppos      = m_snappedPos;

          }

          m_snappedReason = "";

          hook->setAPos(fid, ppos);

          ppos = hook->getAPos(fid);

          m_selection.select(hook->getId(), 1);

          m_selection.select(hook->getId(), 2);

        }

      }

    }

  }

  m_pivotOffset = TPointD();

  m_selection.makeCurrent();

  invalidate();

}

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

void HookTool::leftButtonDrag(const TPointD &pp, const TMouseEvent &e) {

  TTool::Application *app = TTool::getApplication();

  if (!app) return;

  if (m_snapped) return;

  TFrameId fid = getCurrentFid();

  // cerco di capire se sto muovendo un unico hook "unito"

  TPointD hookPos;

  HookSet *hookSet = getHookSet();

  if (!hookSet) return;

  bool draggingPivot = false;

  int pivotIndex     = getPivotIndex();

  int i, count = 0;

  for (i = 0; i < hookSet->getHookCount(); i++) {

    Hook *hook = hookSet->getHook(i);

    if (!hook || hook->isEmpty()) continue;

    TPointD aPos = hook->getAPos(fid);

    TPointD bPos = hook->getBPos(fid);

    if (m_selection.isSelected(i, 1) && m_selection.isSelected(i, 2) &&

        aPos == bPos) {

      count++;

      hookPos = aPos;

    } else if (m_selection.isSelected(i, 1) || m_selection.isSelected(i, 2)) {

      count = 0;

      break;

    }

    if (i == pivotIndex && m_selection.isSelected(i, 1)) draggingPivot = true;

  }

  TPointD pos(pp);

  TPointD delta = pos - m_lastPos;

  if (e.isShiftPressed()) {

    // se e' pigiato lo shift non snappa e si muove solo in

    // orizzontale/verticale

    TPointD d = pos - m_firstPos;

    if (d.x * d.x > d.y * d.y)

      pos.y = m_firstPos.y;

    else

      pos.x = m_firstPos.x;

    delta   = pos - m_lastPos;

  } else if (count == 1 && isSnappedActive() && !draggingPivot) {

    // snappa

    TPointD oldHookPos = hookPos;

    hookPos += pos - m_lastPos;

    double range2 = getPixelSize() * 20;

    range2 *= range2;

    m_snappedReason = "";

    m_shapeBBox     = TRectD();

    if (snap(hookPos, range2)) {

      delta = hookPos - oldHookPos;

      pos   = delta + m_lastPos;

    }

  } else if (count > 1 && isSnappedActive() && !draggingPivot) {

    TPointD oldHookPos = hookPos;

    // delta = pos - m_lastPos;

    TPointD snappedDelta = delta;

    double range2        = getPixelSize() * 20;

    range2 *= range2;

    m_snappedReason = "";

    m_shapeBBox     = TRectD();

    for (i = 0; i < hookSet->getHookCount(); i++) {

      Hook *hook = hookSet->getHook(i);

      if (hook && !hook->isEmpty()) {

        if (m_selection.isSelected(i, 1)) {

          TPointD p0 = hook->getAPos(fid);

          TPointD p1 = p0 + delta;

          if (snap(p1, range2)) snappedDelta = p1 - p0;

        }

        if (m_selection.isSelected(i, 1)) {

          TPointD p0 = hook->getBPos(fid);

          TPointD p1 = p0 + delta;

          if (snap(p1, range2)) snappedDelta = p1 - p0;

        }

      }

    }

    pos   = m_lastPos + snappedDelta;

    delta = snappedDelta;

  }

  m_lastPos = pos;

  TXsheet *xsh = getXsheet();

  //  std::string handle =

  //  getXsheet()->getStageObject(TStageObjectId::ColumnId())->getHandle();

  // actual movement

  for (i = 0; i < hookSet->getHookCount(); i++) {

    Hook *hook = hookSet->getHook(i);

    if (!hook || hook->isEmpty()) continue;

    TPointD aPos   = hook->getAPos(fid);

    TPointD bPos   = hook->getBPos(fid);

    bool aSelected = m_selection.isSelected(i, 1);

    bool bSelected = m_selection.isSelected(i, 2);

    if (pivotIndex == i) {

      if (aSelected) {

        m_pivotOffset += delta;

        if (!bSelected) hook->setBPos(fid, bPos - delta);

      } else if (bSelected)

        hook->setBPos(fid, bPos + delta);

    } else {

      if (aSelected) hook->setAPos(fid, aPos + delta);

      if (bSelected) hook->setBPos(fid, bPos + delta);

    }

    m_hookSetChanged = true;

  }

  getXsheet()->getStageObjectTree()->invalidateAll();

  invalidate();

}

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

void HookTool::leftButtonUp(const TPointD &pos, const TMouseEvent &) {

  TTool::Application *app = TTool::getApplication();

  if (!app) return;

  // note: apparently sometimes (when the user triple-clicks) we receive this

  // event twice

  if (!m_buttonDown) return;

  m_buttonDown = false;

  // if I've moved the pivot hook I have to perform the actual movement in the

  // mouse up event

  int pivotIndex = getPivotIndex();

  if (m_selection.isSelected(pivotIndex, 1) && m_pivotOffset != TPointD()) {

    HookSet *hookSet = getHookSet();

    if (hookSet) {

      Hook *hook = hookSet->getHook(pivotIndex);

      if (hook && !hook->isEmpty()) {

        TFrameId fid = getCurrentFid();

        TPointD aPos = hook->getAPos(fid);

        TPointD bPos = hook->getBPos(fid);

        hook->setAPos(fid, aPos + m_pivotOffset);

        hook->setBPos(fid, bPos + m_pivotOffset);

        getXsheet()->getStageObjectTree()->invalidateAll();

        updateMatrix();

      }

    }

  }

  m_snapped = false;

  // m_selection.selectNone();

  TXshLevel *xl = app->getCurrentLevel()->getLevel();

  if (!xl || !xl->getSimpleLevel()) return;

  xl->getSimpleLevel()->getProperties()->setDirtyFlag(true);

  TPointD delta = m_lastPos - m_firstPos;

  if (m_deselectArmed && norm2(delta) < 10) {

    m_selection.selectNone();

    m_selection.unselect(m_hookId, 1);

    m_selection.unselect(m_hookId, 2);

  }

  m_deselectArmed = false;

  if (m_undo && m_hookSetChanged)

    TUndoManager::manager()->add(m_undo);

  else {

    delete m_undo;

    m_undo = 0;

  }

  m_hookSetChanged = false;

  m_pivotOffset    = TPointD();

}

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

bool HookTool::snap(TPointD &pos, double &range2) {

  bool ret               = false;

  TPointD snappedPos     = pos;

  TVectorImageP vi       = TImageP(getImage(false));

  TStroke *selectedShape = 0;

  TRectD selectedShapeBBox;

  double selectedShapeBBoxArea = 0;

  int i, n;

  n = vi ? (int)vi->getStrokeCount() : 0;

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

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

    if (!stroke->isSelfLoop()) continue;

    TRectD bbox          = stroke->getBBox();

    TPointD strokeCenter = 0.5 * (bbox.getP00() + bbox.getP11());

    if (bbox.contains(pos)) {

      double dist2 = norm2(pos - strokeCenter);

      if (dist2 < range2) {

        double bboxArea = bbox.getLx() * bbox.getLy();

        if (selectedShape == 0 || selectedShapeBBoxArea > bboxArea) {

          range2                = dist2;

          selectedShape         = stroke;

          selectedShapeBBox     = bbox;

          selectedShapeBBoxArea = bboxArea;

        }

      }

    }

  }

  if (selectedShape) {

    m_shapeBBox = selectedShapeBBox;

    snappedPos =

        0.5 * (selectedShapeBBox.getP00() + selectedShapeBBox.getP11());

    m_snappedPos    = snappedPos;

    m_snappedReason = "shape center";

    ret             = true;

  }

  int k = -1;

  if (isEditingScene()) {

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

      double dist2 = norm2(pos - m_otherHooks[i].m_hookPos);

      if (dist2 < range2) {

        range2 = dist2;

        k      = i;

      }

    }

  }

  if (k >= 0) {

    m_shapeBBox     = TRectD();

    snappedPos      = m_otherHooks[k].m_hookPos;

    m_snappedPos    = snappedPos;

    m_snappedReason = "Col" +

                      std::to_string(m_otherHooks[k].m_columnIndex + 1) + "/" +

                      std::to_string(m_otherHooks[k].m_hookIndex + 1);

    ret = true;

  }

  pos = snappedPos;

  return ret;

}

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

void HookTool::mouseMove(const TPointD &pos, const TMouseEvent &e) {

  std::string oldReason = m_snappedReason;

  TPointD oldPos        = m_snappedPos;

  m_snappedPos    = TPointD();

  m_snappedReason = "";

  m_shapeBBox     = TRectD();

  m_otherHooks.clear();

  getOtherHooks(m_otherHooks);

  int hookId, side;

  if (pick(hookId, side, pos)) {

    if (oldReason != "") invalidate();

    return;

  }

  if (isSnappedActive()) {

    double range2 = getPixelSize() * 20.0;

    range2 *= range2;

    TPointD snappedPos = pos;

    snap(snappedPos, range2);

  }

  if (m_snappedReason != oldReason || m_snappedPos != oldPos) invalidate();

}

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

void HookTool::onActivate() {

  // TODO: getApplication()->editImageOrSpline();

  m_otherHooks.clear();

  getOtherHooks(m_otherHooks);

  m_selection.makeCurrent();

}

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

void HookTool::onDeactivate() {

  m_selection.selectNone();

  TSelection::setCurrent(0);

}

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

void HookTool::onEnter() { m_selection.makeCurrent(); }