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

#include "toonzqt/doublefield.h"

#include "toonzqt/dvdialog.h"

#include "tunit.h"

#include <qdoublevalidator></qdoublevalidator>

#include <qhboxlayout></qhboxlayout>

#include <qfocusevent></qfocusevent>

#include <qslider></qslider>

using namespace DVGui;

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

// DoubleValueLineEdit

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

void DoubleValueLineEdit::focusOutEvent(QFocusEvent *e) {

  double value = getValue();

  double minValue, maxValue;

  getRange(minValue, maxValue);

  bool isOutOfRange;

  /*---誤差を吸収する---*/

  MeasuredDoubleLineEdit *lineEdit =

      qobject_cast<measureddoublelineedit *="">(this);</measureddoublelineedit>

  if (lineEdit) {

    int decimal  = lineEdit->getDecimals();

    isOutOfRange = (value < minValue - pow(0.1, decimal + 1) ||

                    value > maxValue + pow(0.1, decimal + 1));

  } else

    isOutOfRange = (value < minValue || value > maxValue);

  if (isOutOfRange) {

    setValue(tcrop(value, minValue, maxValue));

    emit editingFinished();

  }

  QLineEdit::focusOutEvent(e);

  m_isTyping = false;

}

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

void DoubleValueLineEdit::mousePressEvent(QMouseEvent *e) {

  if (e->buttons() == Qt::MiddleButton) {

    m_xMouse           = e->x();

    m_mouseDragEditing = true;

  } else {

    QLineEdit::mousePressEvent(e);

    if (!m_isTyping) {  // only the first click will select all

      selectAll();

      m_isTyping = true;

    }

  }

}

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

void DoubleValueLineEdit::mouseMoveEvent(QMouseEvent *e) {

  if (e->buttons() == Qt::MiddleButton) {

    setValue(getValue() + ((e->x() - m_xMouse) / 2));

    m_xMouse = e->x();

    emit valueChanged();

  } else

    QLineEdit::mouseMoveEvent(e);

}

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

void DoubleValueLineEdit::mouseReleaseEvent(QMouseEvent *e) {

  if ((e->buttons() == Qt::NoButton && m_mouseDragEditing)) {

    m_mouseDragEditing = false;

    clearFocus();

  } else

    QLineEdit::mouseReleaseEvent(e);

}

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

// DoubleValueField

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

DoubleValueField::DoubleValueField(QWidget *parent,

                                   DoubleValueLineEdit *lineEdit)

    : QWidget(parent)

    , m_lineEdit(lineEdit)

    , m_slider(0)

    , m_roller(0)

    , m_isLinearSlider(true) {

  assert(m_lineEdit);

  QWidget *field = new QWidget(this);

  m_roller       = new RollerField(field);

  m_slider       = new QSlider(Qt::Horizontal, this);

  field->setMaximumWidth(100);

  //---layout

  QHBoxLayout *layout = new QHBoxLayout(this);

  layout->setMargin(0);

  layout->setSpacing(5);

  {

    QVBoxLayout *vLayout = new QVBoxLayout(field);

    vLayout->setMargin(0);

    vLayout->setSpacing(0);

    {

      vLayout->addWidget(m_lineEdit);

      vLayout->addWidget(m_roller);

    }

    layout->addWidget(field);

    layout->addWidget(m_slider);

  }

  setLayout(layout);

  //----signal/slot connections

  bool ret = true;

  ret      = ret && connect(m_lineEdit, SIGNAL(valueChanged()),

                       SLOT(onLineEditValueChanged()));

  ret      = ret && connect(m_roller, SIGNAL(valueChanged(bool)),

                       SLOT(onRollerValueChanged(bool)));

  ret      = ret && connect(m_slider, SIGNAL(valueChanged(int)),

                       SLOT(onSliderChanged(int)));

  ret      = ret &&

        connect(m_slider, SIGNAL(sliderReleased()), SLOT(onSliderReleased()));

  ret = ret && connect(m_lineEdit, SIGNAL(editingFinished()), this,

                       SIGNAL(valueEditedByHand()));

  ret = ret && connect(m_slider, SIGNAL(sliderReleased()), this,

                       SIGNAL(valueEditedByHand()));

  assert(ret);

  m_spaceWidget = new QWidget();

  m_spaceWidget->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Minimum);

  layout->addWidget(m_spaceWidget, 1, Qt::AlignLeft);

  setRange(-100.0, 100.0);

}

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

double DoubleValueField::pos2value(int x) const {

  int dicimal = m_lineEdit->getDecimals();

  if (m_isLinearSlider) return (double)x * pow(0.1, dicimal);

  // nonlinear slider case

  double rangeSize = (double)(m_slider->maximum() - m_slider->minimum());

  double posRatio  = (double)(x - m_slider->minimum()) / rangeSize;

  double t;

  if (posRatio <= 0.5)

    t = 0.04 * posRatio;

  else if (posRatio <= 0.75)

    t = -0.02 + 0.08 * posRatio;

  else if (posRatio <= 0.9)

    t = -0.26 + 0.4 * posRatio;

  else

    t = -8.0 + 9.0 * posRatio;

  double sliderValue = round((double)m_slider->minimum() + rangeSize * t);

  return sliderValue * pow(0.1, dicimal);

}

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

int DoubleValueField::value2pos(double v) const {

  int dicimal        = m_lineEdit->getDecimals();

  double sliderValue = round(v * pow(10., dicimal));

  if (m_isLinearSlider) return (int)sliderValue;

  // nonlinear slider case

  double rangeSize  = (double)(m_slider->maximum() - m_slider->minimum());

  double valueRatio = (sliderValue - (double)m_slider->minimum()) / rangeSize;

  double t;

  if (valueRatio <= 0.02)

    t = valueRatio / 0.04;

  else if (valueRatio <= 0.04)

    t = (valueRatio + 0.02) / 0.08;

  else if (valueRatio <= 0.1)

    t = (valueRatio + 0.26) / 0.4;

  else

    t = (valueRatio + 8.0) / 9.0;

  return m_slider->minimum() + (int)(t * rangeSize);

}

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

void DoubleValueField::getRange(double &minValue, double &maxValue) {

  m_lineEdit->getRange(minValue, maxValue);

}

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

void DoubleValueField::setRange(double minValue, double maxValue) {

  m_lineEdit->setRange(minValue, maxValue);

  m_roller->setRange(minValue, maxValue);

  int dicimal   = m_lineEdit->getDecimals();

  int sliderMax = (int)round(maxValue * pow(10., dicimal));

  int sliderMin = (int)round(minValue * pow(10., dicimal));

  m_slider->setRange(sliderMin, sliderMax);

  enableSlider(maxValue - minValue < 10000);

}

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

void DoubleValueField::setValue(double value) {

  if (m_lineEdit->getValue() == value) return;

  m_lineEdit->setValue(value);

  m_roller->setValue(value);

  m_slider->setValue(value2pos(value));

  // forzo il repaint... non sempre si aggiorna e l'update non sembra risolvere

  // il ptroblema!!!

  m_slider->repaint();

}

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

double DoubleValueField::getValue() { return (m_lineEdit->getValue()); }

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

void DoubleValueField::setValues(double value, double minValue,

                                 double maxValue) {

  setRange(minValue, maxValue);

  setValue(value);

}

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

void DoubleValueField::enableSlider(bool enable) {

  m_slider->setEnabled(enable);

  m_spaceWidget->setEnabled(!enable);

  if (enable) {

    m_slider->show();

    m_spaceWidget->hide();

  } else {

    m_slider->hide();

    m_spaceWidget->show();

  }

}

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

bool DoubleValueField::isSliderEnabled() { return m_slider->isEnabled(); }

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

void DoubleValueField::enableRoller(bool enable) {

  m_roller->setEnabled(enable);

  if (enable)

    m_roller->show();

  else

    m_roller->hide();

}

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

bool DoubleValueField::isRollerEnabled() { return m_roller->isEnabled(); }

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

void DoubleValueField::onSliderChanged(int sliderPos) {

  double val = pos2value(sliderPos);

  // Controllo necessario per evitare che il segnale di cambiamento venga emesso

  // piu' volte.

  if (m_lineEdit->getValue() == val ||

      (m_roller->getValue() == val && m_roller->isVisible()))

    return;

  m_lineEdit->setValue(val);

  m_roller->setValue(val);

  // Faccio in modo che il cursore sia sulla prima cifra, cosi' se la stringa

  // da visualizzare e' piu' lunga del campo le cifre che vengono troncate sono

  // le ultime e non le prime (dovrebbero essere quelle dopo la virgola).

  m_lineEdit->setCursorPosition(0);

  emit valueChanged(true);

}

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

void DoubleValueField::onLineEditValueChanged() {

  double value = m_lineEdit->getValue();

  int dicimal  = m_lineEdit->getDecimals();

  // Control necessary to prevent the change signal from being emitted more than

  // once.

  if ((pos2value(m_slider->value()) == value && m_slider->isVisible()) ||

      (m_roller->getValue() == value && m_roller->isVisible()))

    return;

  m_slider->setValue(value2pos(value));

  m_roller->setValue(value);

  emit valueChanged(false);

}

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

void DoubleValueField::onRollerValueChanged(bool isDragging) {

  double value = m_roller->getValue();

  if (value == m_lineEdit->getValue()) {

    assert(pos2value(m_slider->value()) == value || !m_slider->isVisible());

    // Se isDragging e' falso e' giusto che venga emessa la notifica di

    // cambiamento.

    if (!isDragging) emit valueChanged(isDragging);

    return;

  }

  m_slider->setValue(value2pos(value));

  m_lineEdit->setValue(value);

  // Faccio in modo che il cursore sia sulla prima cifra, cosi' se la stringa

  // da visualizzare e' piu' lunga del campo le cifre che vengono troncate sono

  // le ultime e non le prime (dovrebbero essere quelle dopo la virgola).

  m_lineEdit->setCursorPosition(0);

  emit valueChanged(isDragging);

}

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

// DoubleLineEdit

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

DoubleLineEdit::DoubleLineEdit(QWidget *parent, double value)

    : DoubleValueLineEdit(parent) {

  m_validator =

      new QDoubleValidator(-(std::numeric_limits<double>::max)(),</double>

                           (std::numeric_limits<double>::max)(), 8, this);</double>

  setValidator(m_validator);

  setValue(value);

  bool ret = connect(this, SIGNAL(editingFinished()), SIGNAL(valueChanged()));

  assert(ret);

}

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

void DoubleLineEdit::setValue(double value) {

  double minValue, maxValue;

  getRange(minValue, maxValue);

  if (value < minValue) value = minValue;

  if (value > maxValue) value = maxValue;

  QString str;

  str.setNum(value);

  setText(str);

  // Faccio in modo che il cursore sia sulla prima cifra, cosi' se la stringa

  // da visualizzare e' piu' lunga del campo le cifre che vengono troncate sono

  // le ultime e non le prime (dovrebbero essere quelle dopo la virgola).

  setCursorPosition(0);

}

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

double DoubleLineEdit::getValue() { return text().toDouble(); }

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

void DoubleLineEdit::setRange(double minValue, double maxValue) {

  m_validator->setRange(minValue, maxValue, m_validator->decimals());

}

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

void DoubleLineEdit::getRange(double &minValue, double &maxValue) {

  minValue = m_validator->bottom();

  maxValue = m_validator->top();

}

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

void DoubleLineEdit::setDecimals(int decimals) {

  m_validator->setDecimals(decimals);

}

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

int DoubleLineEdit::getDecimals() { return m_validator->decimals(); }

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

// DoubleField

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

DoubleField::DoubleField(QWidget *parent, bool isRollerHide, int decimals)

    : DoubleValueField(parent, new DoubleLineEdit(0)) {

  if (isRollerHide) enableRoller(false);

  DoubleLineEdit *lineEdit = dynamic_cast<doublelineedit *="">(m_lineEdit);</doublelineedit>

  lineEdit->setDecimals(decimals);

  /*--rollerにもStepを設定--*/

  if (!isRollerHide) m_roller->setStep(pow(0.1, decimals));

}

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

// MeasuredDoubleLineEdit

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

MeasuredDoubleLineEdit::MeasuredDoubleLineEdit(QWidget *parent)

    : DoubleValueLineEdit(parent)

    , m_minValue(-(std::numeric_limits<double>::max)())</double>

    , m_maxValue((std::numeric_limits<double>::max)())</double>

    , m_modified(false)

    , m_errorHighlighting(0)

    , m_errorHighlightingTimerId(0)

    , m_decimals(7) {

  setObjectName("ValueLineEdit");

  m_value = new TMeasuredValue("length");

  valueToText();

  bool ret =

      connect(this, SIGNAL(editingFinished()), this, SLOT(onEditingFinished()));

  ret = ret && connect(this, SIGNAL(textChanged(const QString &)), this,

                       SLOT(onTextChanged(const QString &)));

  assert(ret);

}

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

MeasuredDoubleLineEdit::~MeasuredDoubleLineEdit() { delete m_value; }

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

void MeasuredDoubleLineEdit::valueToText() {

  bool oldModified = m_modified;

  setText(QString::fromStdWString(m_value->toWideString(m_decimals)));

  setCursorPosition(0);

  m_modified = oldModified;

}

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

void MeasuredDoubleLineEdit::setValue(double value) {

  m_value->setValue(TMeasuredValue::MainUnit, value);

  valueToText();

  m_modified = false;

}

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

double MeasuredDoubleLineEdit::getValue() {

  return m_value->getValue(TMeasuredValue::MainUnit);

}

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

void MeasuredDoubleLineEdit::setRange(double minValue, double maxValue) {

  m_minValue = minValue;

  m_maxValue = maxValue;

}

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

void MeasuredDoubleLineEdit::getRange(double &minValue, double &maxValue) {

  minValue = m_minValue;

  maxValue = m_maxValue;

}

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

void MeasuredDoubleLineEdit::setMeasure(std::string name) {

  delete m_value;

  m_value = new TMeasuredValue(name != "" ? name : "dummy");

  valueToText();

}

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

void MeasuredDoubleLineEdit::setDecimals(int decimals) {

  m_decimals = decimals;

  valueToText();

}

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

int MeasuredDoubleLineEdit::getDecimals() { return m_decimals; }

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

void MeasuredDoubleLineEdit::onTextChanged(const QString &) {

  m_modified = true;

}

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

void MeasuredDoubleLineEdit::onEditingFinished() {

  if (!m_modified) return;

  m_modified = false;

  double oldValue       = getValue();

  QString oldStyleSheet = styleSheet();

  int err = -10;

  m_value->setValue(text().toStdWString(), &err);

  bool outOfRange = false;

  if (!err) {

    double v   = getValue();

    outOfRange = m_minValue > v || m_maxValue < v;

  }

  if (err) {

    m_errorHighlighting = 1;

    if (m_errorHighlightingTimerId == 0)

      m_errorHighlightingTimerId = startTimer(40);

  } else {

    if (m_errorHighlightingTimerId != 0) killTimer(m_errorHighlightingTimerId);

    m_errorHighlightingTimerId = 0;

    m_errorHighlighting        = 0;

    setStyleSheet("");

  }

  double newValue = getValue();

  if (m_minValue > newValue || m_maxValue < newValue) {

    m_value->setValue(TMeasuredValue::MainUnit, oldValue);

    valueToText();

    emit valueChanged();

    return;

  }

  valueToText();

  emit valueChanged();

}

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

void MeasuredDoubleLineEdit::timerEvent(QTimerEvent *) {

  if (m_errorHighlighting < 0.01) {

    if (m_errorHighlightingTimerId != 0) killTimer(m_errorHighlightingTimerId);

    m_errorHighlightingTimerId = 0;

    m_errorHighlighting        = 0;

    setStyleSheet("");

  } else {

    int v               = 255 - (int)(m_errorHighlighting * 255);

    m_errorHighlighting = m_errorHighlighting * 0.8;

    int c               = 255 << 16 | v << 8 | v;

    setStyleSheet(QString("#ValueLineEdit {background-color:#%1}")

                      .arg(c, 6, 16, QLatin1Char('0')));

  }

}

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

void MeasuredDoubleLineEdit::mousePressEvent(QMouseEvent *e) {

  if ((e->buttons() == Qt::MiddleButton) || m_labelClicked) {

    m_xMouse           = e->x();

    m_mouseDragEditing = true;

  } else {

    QLineEdit::mousePressEvent(e);

    if (!m_isTyping) {  // only the first click will select all

      selectAll();

      m_isTyping = true;

    }

  }

}

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

void MeasuredDoubleLineEdit::mouseMoveEvent(QMouseEvent *e) {

  if ((e->buttons() == Qt::MiddleButton) || m_labelClicked) {

    int precision = (m_maxValue > 100) ? 0 : ((m_maxValue > 10) ? 1 : 2);

    m_value->modifyValue((e->x() - m_xMouse) / 2, precision);

    m_xMouse = e->x();

    valueToText();

    m_modified = false;

  } else

    QLineEdit::mouseMoveEvent(e);

}

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

void MeasuredDoubleLineEdit::mouseReleaseEvent(QMouseEvent *e) {

  if ((e->buttons() == Qt::NoButton && m_mouseDragEditing) || m_labelClicked) {

    m_xMouse   = -1;

    m_modified = true;

    onEditingFinished();

    clearFocus();

    m_mouseDragEditing = false;

    m_labelClicked     = false;

  } else

    QLineEdit::mouseReleaseEvent(e);

}

void MeasuredDoubleLineEdit::receiveMousePress(QMouseEvent *e) {

  m_labelClicked = true;

  mousePressEvent(e);

}

void MeasuredDoubleLineEdit::receiveMouseMove(QMouseEvent *e) {

  mouseMoveEvent(e);

}

void MeasuredDoubleLineEdit::receiveMouseRelease(QMouseEvent *e) {

  mouseReleaseEvent(e);

  m_labelClicked = false;

}

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

// MeasuredDoubleField

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

MeasuredDoubleField::MeasuredDoubleField(QWidget *parent, bool isRollerHide)

    : DoubleValueField(parent, new MeasuredDoubleLineEdit(0)) {

  m_lineEdit->setMaximumWidth(100);

  if (isRollerHide) enableRoller(false);

}

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

void MeasuredDoubleField::setMeasure(std::string measureName) {

  MeasuredDoubleLineEdit *lineEdit =

      dynamic_cast<measureddoublelineedit *="">(m_lineEdit);</measureddoublelineedit>

  assert(lineEdit);

  lineEdit->setMeasure(measureName);

}

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

void MeasuredDoubleField::setDecimals(int decimals) {

  MeasuredDoubleLineEdit *lineEdit =

      qobject_cast<measureddoublelineedit *="">(m_lineEdit);</measureddoublelineedit>

  if (lineEdit) lineEdit->setDecimals(decimals);

  /*--- rollerにもStepを設定 ---*/

  if (isRollerEnabled()) m_roller->setStep(pow(0.1, std::max(decimals - 1, 1)));

}