#include "toonzqt/camerasettingswidget.h"

// TnzQt includes

#include "toonzqt/doublefield.h"

#include "toonzqt/intfield.h"

#include "toonzqt/lineedit.h"

#include "toonzqt/checkbox.h"

#include "toonzqt/tselectionhandle.h"

#include "toonzqt/dvdialog.h"

#include <toonzqt gutil.h=""></toonzqt>

// TnzLib includes

#include "toonz/toonzfolders.h"

#include "toonz/tcamera.h"

#include "toonz/tstageobjecttree.h"

#include "toonz/txshlevelhandle.h"

#include "toonz/txsheethandle.h"

#include "toonz/tscenehandle.h"

#include "toonz/txshlevel.h"

#include "toonz/txshsimplelevel.h"

#include "toonz/txshleveltypes.h"

#include "toonz/preferences.h"

#include "toonz/stage.h"

// TnzCore includes

#include "tconvert.h"

#include "tsystem.h"

#include "tfilepath_io.h"

#include "tutil.h"

// Qt includes

#include <qgridlayout></qgridlayout>

#include <qlabel></qlabel>

#include <qradiobutton></qradiobutton>

#include <qbuttongroup></qbuttongroup>

#include <qapplication></qapplication>

#include <qcombobox></qcombobox>

#include <qmessagebox></qmessagebox>

#include <qlist></qlist>

#include <qstringlist></qstringlist>

#include <qregexp></qregexp>

#include <qpainter></qpainter>

#include <qtextstream></qtextstream>

#include <qstring></qstring>

using namespace std;

using namespace DVGui;

namespace {

/*---小数の余分なゼロを消す---*/

QString removeZeros(QString srcStr) {

  if (!srcStr.contains('.')) return srcStr;

  for (int i = srcStr.length() - 1; i >= 0; i--) {

    if (srcStr.at(i) == '0')

      srcStr.chop(1);

    else if (srcStr.at(i) == '.') {

      srcStr.chop(1);

      break;

    } else

      break;

  }

  return srcStr;

}

// Preference values of the unit - translation text

QMap<qstring, qstring=""> unitTrMap;</qstring,>

}  // namespace

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

QValidator::State SimpleExpValidator::validate(QString &input, int &pos) const {

  /*---使用可能な文字---*/

  QString validChars("0123456789/.");

  int slashCount = 0;

  for (int i = 0; i < input.length(); i++) {

    /*--- まず、使用不可能な文字が含まれている場合はInvalid ---*/

    if (!validChars.contains(input.at(i))) return Invalid;

    if (input.at(i) == '/') slashCount++;

  }

  /*--- 中身は普通の数字。Doubleに変換可能ならOK ---*/

  if (slashCount == 0) {

    bool ok;

    double tmp = input.toDouble(&ok);

    if (ok)

      return (tmp > 0) ? Acceptable : Intermediate;

    else

      return Intermediate;

  } else if (slashCount >= 2) {

    return Intermediate;

  } else  // slashCount == 1

  {

    if (input.at(0) == '/' || input.at(input.length() - 1) == '/')

      return Intermediate;

    else {

      QStringList strList = input.split('/');

      /*---

       * スラッシュの左右でDoubleに変換できるかチェック。できないとIntermediate。

       * ---*/

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

        QString tmpStr = strList.at(i);

        bool ok;

        double tmp = tmpStr.toDouble(&ok);

        if (!ok) return Intermediate;

        if (ok && tmp <= 0) return Intermediate;

      }

      /*--- 左右でDoubleに変換できたのでOK ---*/

      return Acceptable;

    }

  }

}

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

SimpleExpField::SimpleExpField(QWidget *parent) : QLineEdit(parent) {

  m_validator = new SimpleExpValidator(this);

  setValidator(m_validator);

}

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

/*--- 普通に値を入れる ---*/

void SimpleExpField::setValue(double value) {

  QString str;

  str.setNum(value);

  setText(str);

}

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

/*--- A/R用 valueがw/hに近ければ "w/h" という文字列を入れる ---*/

void SimpleExpField::setValue(double value, int w, int h) {

  QString str;

  if (areAlmostEqual(value, (double)w / (double)h, 1e-5))

    str = QString().setNum(w) + "/" + QString().setNum(h);

  else

    str.setNum(value);

  setText(str);

}

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

double SimpleExpField::getValue() {

  int slashCount = text().count('/');

  if (slashCount == 0)

    return text().toDouble();

  else if (slashCount == 1) {

    QStringList strList = text().split('/');

    return strList.at(0).toDouble() / strList.at(1).toDouble();

  }

  std::cout << "more than one slash!" << std::endl;

  return 0.1;

}

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

void SimpleExpField::focusInEvent(QFocusEvent *event) {

  m_previousValue = text();

  QLineEdit::focusInEvent(event);

}

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

void SimpleExpField::focusOutEvent(QFocusEvent *event) {

  int dummy;

  QString tmp = text();

  if (validator()->validate(tmp, dummy) != QValidator::Acceptable)

    setText(m_previousValue);

  QLineEdit::focusOutEvent(event);

}

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

CameraSettingsWidget::CameraSettingsWidget(bool forCleanup)

    : m_forCleanup(forCleanup)

    , m_arValue(0)

    , m_presetListFile("")

    , m_currentLevel(0) {

  if (unitTrMap.isEmpty()) {

    unitTrMap["cm"]    = tr("cm");

    unitTrMap["mm"]    = tr("mm");

    unitTrMap["inch"]  = tr("inch");

    unitTrMap["field"] = tr("field");

    unitTrMap["pixel"] = tr("pixel");

  }

  m_xPrev    = new QRadioButton();

  m_yPrev    = new QRadioButton();

  m_arPrev   = new QRadioButton();

  m_inchPrev = new QRadioButton();

  m_dotPrev  = new QRadioButton();

  m_lxFld = new MeasuredDoubleLineEdit();

  m_lyFld = new MeasuredDoubleLineEdit();

  m_arFld = new SimpleExpField(this);

  m_xResFld   = new DVGui::IntLineEdit();

  m_yResFld   = new DVGui::IntLineEdit();

  m_xDpiFld   = new DoubleLineEdit();

  m_yDpiFld   = new DoubleLineEdit();

  m_unitLabel = new QLabel();

  if (Preferences::instance()->getPixelsOnly())

    m_unitLabel->setText(tr("Pixels"));

  else

    m_unitLabel->setText(

        unitTrMap.value(Preferences::instance()->getCameraUnits()));

  m_dpiLabel = new QLabel(tr("DPI"));

  m_resLabel = new QLabel(tr("Pixels"));

  m_xLabel   = new QLabel(tr("x"));

  m_fspChk = new QPushButton("");

  m_useLevelSettingsBtn = new QPushButton(tr("Use Current Level Settings"));

  m_presetListOm    = new QComboBox();

  m_addPresetBtn    = new QPushButton(tr("Add"));

  m_removePresetBtn = new QPushButton(tr("Remove"));

  //----

  m_useLevelSettingsBtn->setEnabled(false);

  m_useLevelSettingsBtn->setFocusPolicy(Qt::NoFocus);

  m_lxFld->installEventFilter(this);

  m_lyFld->installEventFilter(this);

  m_arFld->installEventFilter(this);

  m_xResFld->installEventFilter(this);

  m_yResFld->installEventFilter(this);

  m_xDpiFld->installEventFilter(this);

  m_yDpiFld->installEventFilter(this);

  m_xResFld->setMinimumWidth(0);

  m_xResFld->setMaximumWidth(QWIDGETSIZE_MAX);

  m_yResFld->setMinimumWidth(0);

  m_yResFld->setMaximumWidth(QWIDGETSIZE_MAX);

  /*--- 表示精度を4桁にする ---*/

  m_lxFld->setDecimals(4);

  m_lyFld->setDecimals(4);

  m_lxFld->setMeasure("camera.lx");

  m_lyFld->setMeasure("camera.ly");

  m_lxFld->setRange(numeric_limits<double>::epsilon(),</double>

                    numeric_limits<double>::infinity());</double>

  m_lyFld->setRange(numeric_limits<double>::epsilon(),</double>

                    numeric_limits<double>::infinity());</double>

  m_xResFld->setRange(1, 10000000);

  m_yResFld->setRange(1, 10000000);

  m_xDpiFld->setRange(1, numeric_limits<double>::infinity());</double>

  m_yDpiFld->setRange(1, numeric_limits<double>::infinity());</double>

  m_fspChk->setFixedSize(20, 20);

  m_fspChk->setCheckable(true);

  m_fspChk->setChecked(true);

  m_fspChk->setToolTip(tr("Force Squared Pixel"));

  m_fspChk->setObjectName("ForceSquaredPixelButton");

  m_fspChk->setIcon(createQIcon("squarepixel"));

  m_addPresetBtn->setObjectName("PushButton_NoPadding");

  m_removePresetBtn->setObjectName("PushButton_NoPadding");

  m_inchPrev->setFixedSize(13, 13);

  m_dotPrev->setFixedSize(13, 13);

  m_inchPrev->setObjectName("CameraSettingsRadioButton_Small");

  m_dotPrev->setObjectName("CameraSettingsRadioButton_Small");

  m_xPrev->setObjectName("CameraSettingsRadioButton");

  m_yPrev->setObjectName("CameraSettingsRadioButton");

  m_arPrev->setObjectName("CameraSettingsRadioButton");

  // radio buttons groups

  QButtonGroup *group;

  group = new QButtonGroup;

  group->addButton(m_xPrev);

  group->addButton(m_yPrev);

  group->addButton(m_arPrev);

  group = new QButtonGroup;

  group->addButton(m_inchPrev);

  group->addButton(m_dotPrev);

  m_arPrev->setChecked(true);

  m_dotPrev->setChecked(true);

  //------ layout

  QVBoxLayout *mainLay = new QVBoxLayout();

  mainLay->setSpacing(3);

  mainLay->setMargin(3);

  {

    QGridLayout *gridLay = new QGridLayout();

    gridLay->setHorizontalSpacing(2);

    gridLay->setVerticalSpacing(3);

    {

      gridLay->addWidget(m_xPrev, 0, 2, Qt::AlignCenter);

      gridLay->addWidget(m_yPrev, 0, 4, Qt::AlignCenter);

      gridLay->addWidget(m_inchPrev, 1, 0, Qt::AlignRight | Qt::AlignVCenter);

      gridLay->addWidget(m_unitLabel, 1, 1, Qt::AlignRight | Qt::AlignVCenter);

      gridLay->addWidget(m_lxFld, 1, 2);

      gridLay->addWidget(new QLabel("x"), 1, 3, Qt::AlignCenter);

      gridLay->addWidget(m_lyFld, 1, 4);

      gridLay->addWidget(m_arPrev, 2, 2, Qt::AlignRight | Qt::AlignVCenter);

      gridLay->addWidget(new QLabel(tr("A/R")), 2, 3, Qt::AlignCenter);

      gridLay->addWidget(m_arFld, 2, 4);

      gridLay->addWidget(m_dotPrev, 3, 0, Qt::AlignRight | Qt::AlignVCenter);

      gridLay->addWidget(m_resLabel, 3, 1, Qt::AlignRight | Qt::AlignVCenter);

      gridLay->addWidget(m_xResFld, 3, 2);

      gridLay->addWidget(m_xLabel, 3, 3, Qt::AlignCenter);

      gridLay->addWidget(m_yResFld, 3, 4);

      gridLay->addWidget(m_dpiLabel, 4, 1, Qt::AlignRight | Qt::AlignVCenter);

      gridLay->addWidget(m_xDpiFld, 4, 2);

      gridLay->addWidget(m_fspChk, 4, 3, Qt::AlignCenter);

      gridLay->addWidget(m_yDpiFld, 4, 4);

    }

    gridLay->setColumnStretch(0, 0);

    gridLay->setColumnStretch(1, 0);

    gridLay->setColumnStretch(2, 1);

    gridLay->setColumnStretch(3, 0);

    gridLay->setColumnStretch(4, 1);

    mainLay->addLayout(gridLay);

    mainLay->addWidget(m_useLevelSettingsBtn);

    QHBoxLayout *resListLay = new QHBoxLayout();

    resListLay->setSpacing(3);

    resListLay->setMargin(1);

    {

      resListLay->addWidget(m_presetListOm, 1);

      resListLay->addWidget(m_addPresetBtn, 0);

      resListLay->addWidget(m_removePresetBtn, 0);

    }

    mainLay->addLayout(resListLay);

  }

  setLayout(mainLay);

  // initialize fields

  TCamera camera;

  setFields(&camera);

  // connect events

  bool ret = true;

  ret = ret && connect(m_lxFld, SIGNAL(editingFinished()), SLOT(onLxChanged()));

  ret = ret && connect(m_lyFld, SIGNAL(editingFinished()), SLOT(onLyChanged()));

  ret = ret && connect(m_arFld, SIGNAL(editingFinished()), SLOT(onArChanged()));

  ret = ret &&

        connect(m_xResFld, SIGNAL(editingFinished()), SLOT(onXResChanged()));

  ret = ret &&

        connect(m_yResFld, SIGNAL(editingFinished()), SLOT(onYResChanged()));

  ret = ret &&

        connect(m_xDpiFld, SIGNAL(editingFinished()), SLOT(onXDpiChanged()));

  ret = ret &&

        connect(m_yDpiFld, SIGNAL(editingFinished()), SLOT(onYDpiChanged()));

  ret =

      ret && connect(m_fspChk, SIGNAL(clicked(bool)), SLOT(onFspChanged(bool)));

  ret =

      ret && connect(m_xPrev, SIGNAL(toggled(bool)), SLOT(onPrevToggled(bool)));

  ret =

      ret && connect(m_yPrev, SIGNAL(toggled(bool)), SLOT(onPrevToggled(bool)));

  ret = ret &&

        connect(m_dotPrev, SIGNAL(toggled(bool)), SLOT(onPrevToggled(bool)));

  ret = ret &&

        connect(m_inchPrev, SIGNAL(toggled(bool)), SLOT(onPrevToggled(bool)));

  ret = ret && connect(m_useLevelSettingsBtn, SIGNAL(clicked()), this,

                       SLOT(useLevelSettings()));

  ret = ret && connect(m_presetListOm, SIGNAL(activated(const QString &)),

                       SLOT(onPresetSelected(const QString &)));

  ret = ret && connect(m_addPresetBtn, SIGNAL(clicked()), SLOT(addPreset()));

  ret = ret &&

        connect(m_removePresetBtn, SIGNAL(clicked()), SLOT(removePreset()));

  assert(ret);

}

CameraSettingsWidget::~CameraSettingsWidget() { setCurrentLevel(0); }

void CameraSettingsWidget::showEvent(QShowEvent *e) {

  if (Preferences::instance()->getCameraUnits() == "pixel") {

    m_resLabel->hide();

    m_dpiLabel->hide();

    m_xLabel->hide();

    m_xResFld->hide();

    m_yResFld->hide();

    m_xDpiFld->hide();

    m_yDpiFld->hide();

    m_fspChk->hide();

    m_dotPrev->hide();

    m_lxFld->setDecimals(0);

    m_lyFld->setDecimals(0);

  } else {

    m_resLabel->show();

    m_dpiLabel->show();

    m_xLabel->show();

    m_xResFld->show();

    m_yResFld->show();

    m_xDpiFld->show();

    m_yDpiFld->show();

    m_fspChk->show();

    m_dotPrev->show();

    m_lxFld->setDecimals(4);

    m_lyFld->setDecimals(4);

  }

  if (Preferences::instance()->getPixelsOnly())

    m_unitLabel->setText(tr("Pixels"));

  else

    m_unitLabel->setText(

        unitTrMap.value(Preferences::instance()->getCameraUnits()));

}

void CameraSettingsWidget::loadPresetList() {

  if (m_presetListFile == "") return;

  m_presetListOm->clear();

  m_presetListOm->addItem(tr("<custom>"));</custom>

  QFile file(m_presetListFile);

  if (file.open(QIODevice::ReadOnly | QIODevice::Text)) {

    QTextStream in(&file);

    while (!in.atEnd()) {

      QString line = in.readLine().trimmed();

      if (line != "") m_presetListOm->addItem(line);

    }

  }

  m_presetListOm->setCurrentIndex(0);

}

void CameraSettingsWidget::savePresetList() {

  QFile file(m_presetListFile);

  if (!file.open(QIODevice::WriteOnly | QIODevice::Text)) return;

  QTextStream out(&file);

  int n = m_presetListOm->count();

  for (int i = 1; i < n; i++) out << m_presetListOm->itemText(i) << "\n";

}

bool CameraSettingsWidget::parsePresetString(const QString &str, QString &name,

                                             int &xres, int &yres,

                                             QString &ar) {

  // str : name, 1024x768, 4/3

  int b;

  b = str.lastIndexOf(",");

  if (b <= 1) return false;

  b = str.lastIndexOf(",", b - 1);

  if (b <= 0) return false;

  QRegExp rx(" *([0-9]+)x([0-9]+) *, *(\\d*(\\.\\d+)?|\\d+/\\d+) *");

  if (!rx.exactMatch(str.mid(b + 1))) return false;

  name = b > 0 ? str.left(b).trimmed() : "";

  xres = rx.cap(1).toInt();

  yres = rx.cap(2).toInt();

  ar   = rx.cap(3);

  return true;

}

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

bool CameraSettingsWidget::parsePresetString(const QString &str, QString &name,

                                             int &xres, int &yres, double &fx,

                                             double &fy, QString &xoffset,

                                             QString &yoffset, double &ar,

                                             bool forCleanup) {

  /*

  parsing preset string with QString::split().

  !NOTE! fx/fy (camera size in inch) and xoffset/yoffset (camera offset used in

  cleanup camera) are optional,

  in order to keep compatibility with default (Harlequin's) reslist.txt

  */

  QStringList tokens = str.split(",", QString::SkipEmptyParts);

  if (!(tokens.count() == 3 ||

        (!forCleanup && tokens.count() == 4) || /*- with "fx x fy" token -*/

        (forCleanup &&

         tokens.count() ==

             6))) /*- with "fx x fy", xoffset and yoffset tokens -*/

    return false;

  /*- name -*/

  name = tokens[0];

  /*- xres, yres  (like:  1024x768) -*/

  QStringList values = tokens[1].split("x");

  if (values.count() != 2) return false;

  bool ok;

  xres = values[0].toInt(&ok);

  if (!ok) return false;

  yres = values[1].toInt(&ok);

  if (!ok) return false;

  if (tokens.count() >= 4) {

    /*- fx, fy -*/

    values = tokens[2].split("x");

    if (values.count() != 2) return false;

    fx = values[0].toDouble(&ok);

    if (!ok) return false;

    fy = values[1].toDouble(&ok);

    if (!ok) return false;

    /*- xoffset, yoffset -*/

    if (forCleanup) {

      xoffset = tokens[3];

      yoffset = tokens[4];

      /*- remove single space -*/

      if (xoffset.startsWith(' ')) xoffset.remove(0, 1);

      if (yoffset.startsWith(' ')) yoffset.remove(0, 1);

    }

  }

  /*- AR -*/

  ar = aspectRatioStringToValue(tokens.last());

  return true;

}

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

void CameraSettingsWidget::setPresetListFile(const TFilePath &fp) {

  m_presetListFile = QString::fromStdWString(fp.getWideString());

  loadPresetList();

}

bool CameraSettingsWidget::eventFilter(QObject *obj, QEvent *e) {

  if (e->type() == QEvent::FocusIn) {

    if (m_xPrev->isChecked() && obj == m_lxFld)  // x-prev, fld=lx

      m_yPrev->setChecked(true);

    else if (m_yPrev->isChecked() && obj == m_lyFld)  // y-prev, fld=ly

      m_xPrev->setChecked(true);

    else if (m_arPrev->isChecked() && obj == m_arFld)  // ar-prev, fld=ar

      m_xPrev->setChecked(true);

    if (m_inchPrev->isChecked() &&

        (obj == m_lxFld || obj == m_lyFld ||

         obj == m_arFld))  // inchPrev, fld = lx|ly|ar

      m_dotPrev->setChecked(true);

    else if (m_dotPrev->isChecked() &&

             (obj == m_xResFld ||

              obj == m_yResFld))  // dotPrev, fld = xres|yres

      m_inchPrev->setChecked(true);

  }

  return QObject::eventFilter(obj, e);

}

void CameraSettingsWidget::setCurrentLevel(TXshLevel *xshLevel) {

  TXshSimpleLevel *sl = xshLevel ? xshLevel->getSimpleLevel() : 0;

  if (sl && sl->getType() == PLI_XSHLEVEL) sl = 0;

  if (sl == m_currentLevel) return;

  if (sl) sl->addRef();

  if (m_currentLevel) m_currentLevel->release();

  m_currentLevel = sl;

  m_useLevelSettingsBtn->setEnabled(m_currentLevel != 0);

}

void CameraSettingsWidget::useLevelSettings() {

  TXshSimpleLevel *sl = m_currentLevel;

  if (!sl) return;

  // Build dpi

  TPointD dpi = sl->getDpi(TFrameId::NO_FRAME, 0);

  // Build physical size

  TDimensionD size(0, 0);

  TDimension res = sl->getResolution();

  if (res.lx <= 0 || res.ly <= 0 || dpi.x <= 0 || dpi.y <= 0) return;

  size.lx = res.lx / dpi.x;

  size.ly = res.ly / dpi.y;

  TCamera camera;

  getFields(&camera);

  camera.setSize(size);

  camera.setRes(res);

  setFields(&camera);

  emit levelSettingsUsed();

  emit changed();

}

void CameraSettingsWidget::setFields(const TCamera *camera) {

  TDimensionD sz = camera->getSize();

  TDimension res = camera->getRes();

  m_lxFld->setValue(sz.lx);

  m_lyFld->setValue(sz.ly);

  m_xResFld->setValue(res.lx);

  m_yResFld->setValue(res.ly);

  setArFld(sz.lx / sz.ly);

  m_xDpiFld->setValue(res.lx / sz.lx);

  m_yDpiFld->setValue(res.ly / sz.ly);

  updatePresetListOm();

}

bool CameraSettingsWidget::getFields(TCamera *camera) {

  TDimensionD old_sz = camera->getSize();

  TDimension old_res = camera->getRes();

  if (old_sz == getSize() && old_res == getRes()) return false;

  camera->setSize(getSize());

  camera->setRes(getRes());

  return true;

}

TDimensionD CameraSettingsWidget::getSize() const {

  double lx = m_lxFld->getValue();

  double ly = m_lyFld->getValue();

  return TDimensionD(lx, ly);

}

TDimension CameraSettingsWidget::getRes() const {

  int xRes = (int)(m_xResFld->getValue());

  int yRes = (int)(m_yResFld->getValue());

  return TDimension(xRes, yRes);

}

void CameraSettingsWidget::updatePresetListOm() {

  if (m_presetListOm->currentIndex() == 0) return;

  bool match = false;

  int xres, yres;

  QString name, arStr;

  double fx, fy;

  QString xoffset, yoffset;

  double ar;

  if (parsePresetString(m_presetListOm->currentText(), name, xres, yres, fx, fy,

                        xoffset, yoffset, ar, m_forCleanup)) {

    double eps = 1.0e-6;

    if (m_forCleanup && m_offsX && m_offsY) {

      match = xres == m_xResFld->getValue() && yres == m_yResFld->getValue() &&

              (fx < 0.0 || fx == m_lxFld->getValue()) &&

              (fy < 0.0 || fy == m_lyFld->getValue()) &&

              (xoffset.isEmpty() || xoffset == m_offsX->text()) &&

              (yoffset.isEmpty() || yoffset == m_offsY->text());

    } else {

      match = xres == m_xResFld->getValue() && yres == m_yResFld->getValue() &&

              (fx < 0.0 || fx == m_lxFld->getValue()) &&

              (fy < 0.0 || fy == m_lyFld->getValue());

    }

  }

  if (!match) m_presetListOm->setCurrentIndex(0);

}

// ly,ar => lx

void CameraSettingsWidget::hComputeLx() {

  m_lxFld->setValue(m_lyFld->getValue() * m_arValue);

}

// lx,ar => ly

void CameraSettingsWidget::hComputeLy() {

  if (m_arValue == 0.0) return;  // non dovrebbe mai succedere

  m_lyFld->setValue(m_lxFld->getValue() / m_arValue);

}

// lx,ly => ar

void CameraSettingsWidget::computeAr() {

  if (m_lyFld->getValue() == 0.0) return;  // non dovrebbe mai succedere

  setArFld(m_lxFld->getValue() / m_lyFld->getValue());

}

// xres,xdpi => lx

void CameraSettingsWidget::vComputeLx() {

  if (m_xDpiFld->getValue() == 0.0) return;  // non dovrebbe mai succedere

  m_lxFld->setValue(m_xResFld->getValue() / m_xDpiFld->getValue());

}

// yres,ydpi => ly

void CameraSettingsWidget::vComputeLy() {

  if (m_yDpiFld->getValue() == 0.0) return;  // non dovrebbe mai succedere

  m_lyFld->setValue(m_yResFld->getValue() / m_yDpiFld->getValue());

}

// lx,xdpi => xres

void CameraSettingsWidget::computeXRes() {

  m_xResFld->setValue(tround(m_lxFld->getValue() * m_xDpiFld->getValue()));

}

// ly,ydpi => yres

void CameraSettingsWidget::computeYRes() {

  m_yResFld->setValue(tround(m_lyFld->getValue() * m_yDpiFld->getValue()));

}

// lx,xres => xdpi

void CameraSettingsWidget::computeXDpi() {

  if (m_lxFld->getValue() == 0.0) return;  // non dovrebbe mai succedere

  m_xDpiFld->setValue(m_xResFld->getValue() / m_lxFld->getValue());

}

// ly,yres => ydpi

void CameraSettingsWidget::computeYDpi() {

  if (m_lyFld->getValue() == 0.0) return;  // non dovrebbe mai succedere

  m_yDpiFld->setValue(m_yResFld->getValue() / m_lyFld->getValue());

}

// set A/R field, assign m_arValue and compute a nice string representation for

// the value (e.g. "4/3" instead of 1.3333333)

void CameraSettingsWidget::setArFld(double ar) {

  m_arValue = ar;

  /*---ピクセルサイズのW/Hの値に近かったら"W/H"と表示する---*/

  m_arFld->setValue(ar, (int)m_xResFld->getValue(), (int)m_yResFld->getValue());

}

// compute res or dpi according to the prevalence

void CameraSettingsWidget::computeResOrDpi() {

  computeXRes();

  computeYRes();

}

void CameraSettingsWidget::onLxChanged() {

  assert(!m_inchPrev->isChecked());

  // assert(!(m_fspChk->isChecked() && m_yPrev->isChecked() &&

  // m_dotPrev->isChecked()));

  if (m_yPrev->isChecked())

    computeAr();

  else

    hComputeLy();

  computeResOrDpi();

  updatePresetListOm();

  emit changed();

}

void CameraSettingsWidget::onLyChanged() {

  assert(!m_inchPrev->isChecked());

  // assert(!(m_fspChk->isChecked() && m_xPrev->isChecked() &&

  // m_dotPrev->isChecked()));

  if (m_xPrev->isChecked())

    computeAr();

  else

    hComputeLx();

  computeResOrDpi();

  updatePresetListOm();

  emit changed();

}

void CameraSettingsWidget::onArChanged() {

  m_arValue = aspectRatioStringToValue(m_arFld->text());

  if (m_xPrev->isChecked())

    hComputeLy();

  else

    hComputeLx();

  computeResOrDpi();

  updatePresetListOm();

  emit changed();

}

void CameraSettingsWidget::onXResChanged() {

  vComputeLx();

  if (m_yPrev->isChecked())

    computeAr();

  else {

    hComputeLy();

    computeYRes();

  }

  updatePresetListOm();

  emit changed();

}

void CameraSettingsWidget::onYResChanged() {

  vComputeLy();

  if (m_xPrev->isChecked())

    computeAr();

  else {

    hComputeLx();

    computeXRes();

  }

  updatePresetListOm();

  emit changed();

}

void CameraSettingsWidget::onXDpiChanged() {

  if (Preferences::instance()->getPixelsOnly()) {

    m_xDpiFld->setValue(Stage::standardDpi);

    m_yDpiFld->setValue(Stage::standardDpi);

  } else if (m_fspChk->isChecked())

    m_yDpiFld->setValue(m_xDpiFld->getValue());

  if (m_dotPrev->isChecked()) {

    vComputeLx();

    if (m_arPrev->isChecked()) {

      hComputeLy();

      if (!m_fspChk->isChecked()) computeYDpi();

    } else

      computeAr();

  } else {

    computeXRes();

    computeYRes();

  }

  updatePresetListOm();

  emit changed();

}

void CameraSettingsWidget::onYDpiChanged() {

  if (Preferences::instance()->getPixelsOnly()) {

    m_xDpiFld->setValue(Stage::standardDpi);

    m_yDpiFld->setValue(Stage::standardDpi);

  } else if (m_fspChk->isChecked())

    m_xDpiFld->setValue(m_yDpiFld->getValue());

  if (m_dotPrev->isChecked()) {

    vComputeLy();

    if (m_arPrev->isChecked()) {

      hComputeLx();

      if (!m_fspChk->isChecked()) computeXDpi();

    } else

      computeAr();

  } else {

    computeXRes();

    computeYRes();

  }

  updatePresetListOm();

  emit changed();

}

void CameraSettingsWidget::onFspChanged(bool checked) {

  if (m_fspChk->isChecked()) {

    if (m_xPrev->isChecked())

      m_yDpiFld->setValue(m_xDpiFld->getValue());

    else

      m_xDpiFld->setValue(m_yDpiFld->getValue());

    if (m_dotPrev->isChecked()) {

      vComputeLx();

      vComputeLy();

      computeAr();

    } else {

      computeXRes();

      computeYRes();

    }

  }

  updatePresetListOm();

  emit changed();

}

void CameraSettingsWidget::onPrevToggled(bool checked) {

  /*---Prevalences が変わっても ForceSquaredPixelオプションには影響しない---*/

}

void CameraSettingsWidget::onPresetSelected(const QString &str) {

  if (str == tr("<custom>") || str.isEmpty()) return;</custom>

  QString name, arStr;

  int xres = 0, yres = 0;

  double fx = -1.0, fy = -1.0;

  QString xoffset = "", yoffset = "";

  double ar;

  if (parsePresetString(str, name, xres, yres, fx, fy, xoffset, yoffset, ar,

                        m_forCleanup)) {

    m_xResFld->setValue(xres);

    m_yResFld->setValue(yres);

    m_arFld->setValue(ar, tround(xres), tround(yres));

    m_arValue = ar;

    if (fx > 0.0 && fy > 0.0) {

      m_lxFld->setValue(fx);

      m_lyFld->setValue(fy);

    } else {

      if (m_xPrev->isChecked())

        hComputeLy();

      else

        hComputeLx();

    }

    if (Preferences::instance()->getPixelsOnly()) {

      m_lxFld->setValue(xres / Stage::standardDpi);

      m_lyFld->setValue(yres / Stage::standardDpi);

    }

    if (m_forCleanup && m_offsX && m_offsY && !xoffset.isEmpty() &&

        !yoffset.isEmpty()) {

      m_offsX->setText(xoffset);

      m_offsY->setText(yoffset);

      m_offsX->postSetText();  // calls onEditingFinished()

      m_offsY->postSetText();  // calls onEditingFinished()

    }