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#include "startuppopup.h"

// Tnz6 includes
#include "mainwindow.h"
#include "tapp.h"
#include "iocommand.h"
#include "toutputproperties.h"
#include "toonzqt/flipconsole.h"
#include "menubarcommandids.h"
#include "tenv.h"
#include "toonz/stage.h"

// TnzQt includes
#include "toonzqt/menubarcommand.h"
#include "toonzqt/gutil.h"
#include "toonzqt/doublefield.h"
#include "toonzqt/icongenerator.h"

// TnzLib includes
#include "toonz/toonzscene.h"
#include "toonz/txsheet.h"
#include "toonz/levelproperties.h"
#include "toonz/sceneproperties.h"
#include "toonz/tcamera.h"
#include "toonz/tscenehandle.h"
#include "toonz/txsheethandle.h"
#include "toonz/preferences.h"
#include "toonz/tproject.h"

// TnzCore includes
#include "tsystem.h"
#include "filebrowsermodel.h"

// Qt includes
#include <QHBoxLayout>
#include <QComboBox>
#include <QPushButton>
#include <QMainWindow>
#include <QApplication>
#include <QDesktopWidget>
#include <QMessageBox>
#include <QTextStream>
#include <QFrame>
#include <QGroupBox>
#include <QPainter>
#include <QScrollBar>
#include <QMouseEvent>
#include <QDesktopServices>

using namespace std;
using namespace DVGui;

namespace {

// the first value in the preset list
const QString custom = QObject::tr("<custom>");

void removeAll(QLayout *layout) {
  QLayoutItem *child;
  while (layout->count() != 0) {
    child = layout->takeAt(0);
    if (child->layout() != 0) {
      removeAll(child->layout());
    } else if (child->widget() != 0) {
      delete child->widget();
    }

    delete child;
  }
}

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;
}
}  // namespace

//=============================================================================
/*! \class StartupPopup
                \brief The StartupPopup class provides a modal dialog to
   bring up recent files or create a new scene.

                Inherits \b Dialog.
*/
//-----------------------------------------------------------------------------

StartupPopup::StartupPopup()
    : Dialog(TApp::instance()->getMainWindow(), true, true, "StartupPopup") {
  setWindowTitle(tr("OpenToonz Startup"));

  m_projectBox = new QGroupBox(tr("Current Project"), this);
  m_scenesTab  = new QTabWidget();
  m_recentBox  = new QGroupBox(tr("Recent Scenes [Project]"), this);
  m_projectBox->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
  m_nameFld                 = new LineEdit(this);
  m_pathFld                 = new FileField(this);
  m_sceneNameLabel          = new QLabel(tr("Scene Name:"));
  m_widthLabel              = new QLabel(tr("Width:"), this);
  m_widthFld                = new MeasuredDoubleLineEdit(this);
  m_heightLabel             = new QLabel(tr("Height:"), this);
  m_heightFld               = new MeasuredDoubleLineEdit(this);
  m_dpiLabel                = new QLabel(tr("DPI:"), this);
  m_dpiFld                  = new DoubleLineEdit(this, 120);
  m_resXLabel               = new QLabel(tr("X"), this);
  m_resXFld                 = new DoubleLineEdit(this);
  m_resYFld                 = new DoubleLineEdit(this);
  m_resTextLabel            = new QLabel(tr("Resolution:"), this);
  m_fpsLabel                = new QLabel(tr("Frame Rate:"), this);
  m_fpsFld                  = new DoubleLineEdit(this, 24.0);
  m_cameraSettingsWidget    = new CameraSettingsWidget(false);
  m_presetCombo             = new QComboBox(this);
  m_unitsCB                 = new QComboBox(this);
  m_addPresetBtn            = new QPushButton(tr("Add"), this);
  m_removePresetBtn         = new QPushButton(tr("Remove"), this);
  m_showAtStartCB           = new QCheckBox(tr("Show this at startup"), this);
  m_autoSaveOnCB            = new QCheckBox(tr("Automatically Save Every "));
  m_autoSaveTimeFld         = new IntLineEdit(this, 10);
  QPushButton *createButton = new QPushButton(tr("Create Scene"), this);
  QPushButton *newProjectButton = new QPushButton(tr("New Project..."), this);
  QPushButton *loadOtherSceneButton =
      new QPushButton(tr("Open Another Scene..."), this);

  m_projectsCB = new QComboBox(this);
  QStringList type;
  type << tr("pixel") << tr("cm") << tr("mm") << tr("inch") << tr("field");
  m_unitsCB->addItems(type);

  QPushButton *openProjectButton = new QPushButton(tr("Open Project..."), this);
  QPushButton *exploreProjectButton =
      new QPushButton(tr("Explore Folder"), this);

  m_existingList = new StartupScenesList(this, QSize(96, 54));

  // Exclude all character which cannot fit in a filepath (Win).
  // Dots are also prohibited since they are internally managed by Toonz.
  QRegExp rx("[^\\\\/:?*.\"<>|]+");
  m_nameFld->setValidator(new QRegExpValidator(rx, this));

  m_widthFld->setMeasure("camera.lx");
  m_heightFld->setMeasure("camera.ly");

  m_widthFld->setRange(0.1, (std::numeric_limits<double>::max)());
  m_heightFld->setRange(0.1, (std::numeric_limits<double>::max)());
  m_fpsFld->setRange(1.0, (std::numeric_limits<double>::max)());
  m_dpiFld->setRange(1.0, (std::numeric_limits<double>::max)());
  m_resXFld->setRange(0.1, (std::numeric_limits<double>::max)());
  m_resYFld->setRange(0.1, (std::numeric_limits<double>::max)());
  m_autoSaveTimeFld->setRange(1, (std::numeric_limits<int>::max)());
  m_autoSaveOnCB->setChecked(Preferences::instance()->isAutosaveEnabled());
  m_autoSaveOnCB->setStyleSheet("QCheckBox{ background-color: none; }");
  m_autoSaveTimeFld->setEnabled(m_autoSaveOnCB->isChecked());
  m_autoSaveTimeFld->setValue(Preferences::instance()->getAutosavePeriod());
  m_showAtStartCB->setChecked(Preferences::instance()->isStartupPopupEnabled());
  m_showAtStartCB->setStyleSheet("QCheckBox{ background-color: none; }");
  m_addPresetBtn->setStyleSheet(
      "QPushButton { padding-left: 4px; padding-right: 4px;}");
  m_removePresetBtn->setStyleSheet(
      "QPushButton { padding-left: 4px; padding-right: 4px;}");
  QLabel *label = new QLabel();
  label->setPixmap(QPixmap(generateIconPixmap("opentoonz_logo")));
  m_projectBox->setObjectName("SolidLineFrame");
  m_scenesTab->setObjectName("SolidLineFrame");
  m_recentBox->setObjectName("SolidLineFrame");
  m_projectBox->setContentsMargins(10, 10, 10, 10);
  m_scenesTab->setContentsMargins(10, 10, 10, 10);
  m_recentBox->setContentsMargins(10, 10, 10, 10);
  m_recentBox->setFixedWidth(200);
  m_scenesTab->setMinimumWidth(480);
  m_projectBox->setMinimumWidth(480);
  m_buttonFrame->setFixedHeight(34);

  //--- layout
  m_topLayout->setMargin(0);
  m_topLayout->setSpacing(0);
  {
    QGridLayout *guiLay      = new QGridLayout();
    QGridLayout *projectLay  = new QGridLayout();
    QGridLayout *newSceneLay = new QGridLayout();
    QWidget *newSceneWidget  = new QWidget();
    m_recentSceneLay         = new QVBoxLayout();
    guiLay->setMargin(10);
    guiLay->setVerticalSpacing(10);
    guiLay->setHorizontalSpacing(10);

    guiLay->addWidget(label, 0, 0, 1, 2, Qt::AlignCenter);

    //--- Project
    projectLay->setSpacing(8);
    projectLay->setMargin(8);
    {
      projectLay->addWidget(m_projectsCB, 0, 0, 1, 3);
      projectLay->addWidget(newProjectButton, 1, 0);
      projectLay->addWidget(openProjectButton, 1, 1);
      projectLay->addWidget(exploreProjectButton, 1, 2);
    }
    m_projectBox->setLayout(projectLay);
    guiLay->addWidget(m_projectBox, 1, 0, 1, 1, Qt::AlignCenter);

    //--- Existing scenes
    m_scenesTab->addTab(m_existingList, tr("Open Existing Scene"));

    //--- New scene
    newSceneLay->setMargin(8);
    newSceneLay->setVerticalSpacing(8);
    newSceneLay->setHorizontalSpacing(8);
    {
      // Scene Name
      newSceneLay->addWidget(m_sceneNameLabel, 0, 0,
                             Qt::AlignRight | Qt::AlignVCenter);
      newSceneLay->addWidget(m_nameFld, 0, 1, 1, 3);

      // Save In
      newSceneLay->addWidget(new QLabel(tr("Save In:")), 1, 0,
                             Qt::AlignRight | Qt::AlignVCenter);
      newSceneLay->addWidget(m_pathFld, 1, 1, 1, 3);
      newSceneLay->addWidget(new QLabel(tr("Camera Size:")), 2, 0,
                             Qt::AlignRight | Qt::AlignVCenter);
      QHBoxLayout *resListLay = new QHBoxLayout();
      resListLay->setSpacing(3);
      resListLay->setMargin(1);
      {
        resListLay->addWidget(m_presetCombo, 1);
        resListLay->addWidget(m_addPresetBtn, 0);
        resListLay->addWidget(m_removePresetBtn, 0);
      }
      newSceneLay->addLayout(resListLay, 2, 1, 1, 3, Qt::AlignLeft);

      // Width - Height
      newSceneLay->addWidget(m_widthLabel, 3, 0,
                             Qt::AlignRight | Qt::AlignVCenter);
      newSceneLay->addWidget(m_widthFld, 3, 1);
      newSceneLay->addWidget(m_heightLabel, 3, 2,
                             Qt::AlignRight | Qt::AlignVCenter);
      newSceneLay->addWidget(m_heightFld, 3, 3);

      newSceneLay->addWidget(m_resTextLabel, 4, 0, 1, 1, Qt::AlignRight);
      newSceneLay->addWidget(m_resXFld, 4, 1);
      newSceneLay->addWidget(m_resXLabel, 4, 2, 1, 1, Qt::AlignCenter);
      newSceneLay->addWidget(m_resYFld, 4, 3);
      newSceneLay->addWidget(new QLabel(tr("Units:")), 5, 0,
                             Qt::AlignRight | Qt::AlignVCenter);
      newSceneLay->addWidget(m_unitsCB, 5, 1, 1, 1);
      newSceneLay->addWidget(m_dpiLabel, 5, 2,
                             Qt::AlignRight | Qt::AlignVCenter);
      newSceneLay->addWidget(m_dpiFld, 5, 3, 1, 1);
      newSceneLay->addWidget(m_fpsLabel, 6, 0,
                             Qt::AlignRight | Qt::AlignVCenter);
      newSceneLay->addWidget(m_fpsFld, 6, 1, 1, 1);
      newSceneLay->addWidget(createButton, 7, 1, 1, 3, Qt::AlignLeft);
    }
    newSceneWidget->setLayout(newSceneLay);
    m_scenesTab->addTab(newSceneWidget, tr("Create a New Scene"));

    guiLay->addWidget(m_scenesTab, 2, 0, 4, 1, Qt::AlignTop);

    //--- Recent scenes
    m_recentSceneLay->setMargin(5);
    m_recentSceneLay->setSpacing(2);
    {
      // Recent Scene List
      m_recentBox->setLayout(m_recentSceneLay);
      guiLay->addWidget(m_recentBox, 1, 1, 4, 1,
                        Qt::AlignTop | Qt::AlignHCenter);
      guiLay->addWidget(loadOtherSceneButton, 5, 1, 1, 1, Qt::AlignRight);
    }
    m_topLayout->addLayout(guiLay, 0);
  }

  m_buttonLayout->setMargin(0);
  m_buttonLayout->setSpacing(10);
  {
    m_buttonLayout->addWidget(m_showAtStartCB, Qt::AlignLeft);
    m_buttonLayout->addStretch();
    m_buttonLayout->addWidget(m_autoSaveOnCB);
    m_buttonLayout->addWidget(m_autoSaveTimeFld);
    QLabel *minutesLabel = new QLabel(tr("Minutes"), this);
    minutesLabel->setStyleSheet("QLabel{ background-color: none; }");
    m_buttonLayout->addWidget(minutesLabel);
  }

  TApp *app                 = TApp::instance();
  TSceneHandle *sceneHandle = app->getCurrentScene();

  //---- signal-slot connections
  bool ret = true;
  ret      = ret && connect(sceneHandle, SIGNAL(sceneChanged()), this,
                            SLOT(onSceneChanged()));
  ret      = ret && connect(sceneHandle, SIGNAL(sceneSwitched()), this,
                            SLOT(onSceneChanged()));
  ret      = ret && connect(newProjectButton, SIGNAL(clicked()), this,
                            SLOT(onNewProjectButtonPressed()));
  ret      = ret && connect(openProjectButton, SIGNAL(clicked()), this,
                            SLOT(onOpenProjectButtonPressed()));
  ret      = ret && connect(exploreProjectButton, SIGNAL(clicked()), this,
                            SLOT(onExploreProjectButtonPressed()));
  ret      = ret && connect(loadOtherSceneButton, SIGNAL(clicked()), this,
                            SLOT(onLoadSceneButtonPressed()));
  ret      = ret && connect(m_projectsCB, SIGNAL(currentIndexChanged(int)),
                            SLOT(onProjectChanged(int)));
  ret      = ret &&
        connect(createButton, SIGNAL(clicked()), this, SLOT(onCreateButton()));
  ret = ret && connect(m_showAtStartCB, SIGNAL(stateChanged(int)), this,
                       SLOT(onShowAtStartChanged(int)));
  ret = ret && connect(m_widthFld, SIGNAL(valueChanged()), this,
                       SLOT(updateResolution()));
  ret = ret && connect(m_heightFld, SIGNAL(valueChanged()), this,
                       SLOT(updateResolution()));
  ret = ret &&
        connect(m_resXFld, SIGNAL(valueChanged()), this, SLOT(updateSize()));
  ret = ret &&
        connect(m_resYFld, SIGNAL(valueChanged()), this, SLOT(updateSize()));
  ret = ret && connect(m_dpiFld, SIGNAL(editingFinished()), this,
                       SLOT(onDpiChanged()));
  ret = ret && connect(m_presetCombo, SIGNAL(activated(const QString &)),
                       SLOT(onPresetSelected(const QString &)));
  ret = ret && connect(m_addPresetBtn, SIGNAL(clicked()), SLOT(addPreset()));
  ret = ret && connect(m_unitsCB, SIGNAL(currentIndexChanged(int)),
                       SLOT(onCameraUnitChanged(int)));
  ret = ret &&
        connect(m_removePresetBtn, SIGNAL(clicked()), SLOT(removePreset()));
  ret = ret && connect(m_nameFld, SIGNAL(returnPressedNow()), createButton,
                       SLOT(animateClick()));
  ret = ret && connect(m_autoSaveOnCB, SIGNAL(stateChanged(int)), this,
                       SLOT(onAutoSaveOnChanged(int)));
  ret = ret && connect(m_autoSaveTimeFld, SIGNAL(editingFinished()), this,
                       SLOT(onAutoSaveTimeChanged()));
  ret = ret && connect(m_existingList, SIGNAL(itemClicked(int)), this,
                       SLOT(onExistingSceneClicked(int)));
  assert(ret);
}

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

void StartupPopup::showEvent(QShowEvent *) {
  loadPresetList();
  updateProjectCB();
  m_nameFld->setFocus();
  m_pathFld->setPath(TApp::instance()
                         ->getCurrentScene()
                         ->getScene()
                         ->getProject()
                         ->getScenesPath()
                         .getQString());
  TDimensionD cameraSize = TApp::instance()
                               ->getCurrentScene()
                               ->getScene()
                               ->getCurrentCamera()
                               ->getSize();
  TDimension cameraRes = TApp::instance()
                             ->getCurrentScene()
                             ->getScene()
                             ->getCurrentCamera()
                             ->getRes();
  double fps = TApp::instance()
                   ->getCurrentScene()
                   ->getScene()
                   ->getProperties()
                   ->getOutputProperties()
                   ->getFrameRate();
  m_widthFld->setValue(cameraSize.lx);
  m_heightFld->setValue(cameraSize.ly);
  if (Preferences::instance()->getCameraUnits() == "pixel") {
    m_widthFld->setDecimals(0);
    m_heightFld->setDecimals(0);
    m_resTextLabel->hide();
    m_resXFld->hide();
    m_resYFld->hide();
    m_resXLabel->hide();
    m_dpiFld->hide();
    m_dpiLabel->hide();
  } else {
    m_widthFld->setDecimals(4);
    m_heightFld->setDecimals(4);
    m_resXFld->show();
    m_resYFld->show();
    m_resXLabel->show();
    m_resTextLabel->show();
    m_dpiFld->show();
    m_dpiLabel->show();
  }

  m_fpsFld->setValue(fps);
  m_unitsCB->setCurrentText(Preferences::instance()->getCameraUnits());
  m_dpi  = cameraRes.lx / cameraSize.lx;
  m_xRes = cameraRes.lx;
  m_yRes = cameraRes.ly;
  m_resXFld->setValue(m_xRes);
  m_resYFld->setValue(m_yRes);
  m_resXFld->setDecimals(0);
  m_resYFld->setDecimals(0);
  m_dpiFld->setValue(m_dpi);

  int boxWidth  = m_scenesTab->width();
  int boxHeight = m_scenesTab->height();
  m_scenesTab->setFixedWidth(boxWidth);
  m_projectBox->setFixedWidth(boxWidth);
  m_recentBox->setMinimumHeight(boxHeight);
  m_autoSaveOnCB->setChecked(Preferences::instance()->isAutosaveEnabled());
  m_autoSaveTimeFld->setEnabled(m_autoSaveOnCB->isChecked());
  m_autoSaveTimeFld->setValue(Preferences::instance()->getAutosavePeriod());
  // update recent scenes
  // clear items if they exist first
  refreshRecentScenes();
  refreshExistingScenes();
  // center window
  int currentScreen =
      QApplication::desktop()->screenNumber(TApp::instance()->getMainWindow());
  QPoint activeMonitorCenter =
      QApplication::desktop()->availableGeometry(currentScreen).center();
  QPoint thisPopupCenter         = this->rect().center();
  QPoint centeredOnActiveMonitor = activeMonitorCenter - thisPopupCenter;
  this->move(centeredOnActiveMonitor);
}

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

void StartupPopup::refreshRecentScenes() {
  removeAll(m_recentSceneLay);

  m_sceneNames.clear();
  m_sceneNames = RecentFiles::instance()->getFilesNameList(RecentFiles::Scene);
  m_recentNamesLabels.clear();
  m_recentNamesLabels = QVector<StartupLabel *>(m_sceneNames.count());

  if (m_sceneNames.count() <= 0) {
    m_recentSceneLay->addWidget(new QLabel(tr("No Recent Scenes"), this), 1,
                                Qt::AlignTop);
  } else {
    int i = 0;
    for (QString name : m_sceneNames) {
      if (i > 9) break;  // box can hold 10 scenes
      QString fileName =
          name.remove(0, name.indexOf(" ") + 1);  // remove "#. " prefix
      QString projectName = RecentFiles::instance()->getFileProject(fileName);
      QString justName = QString::fromStdString(TFilePath(fileName).getName()) +
                         (projectName != "-" ? " [" + projectName + "]" : "");
      m_recentNamesLabels[i] = new StartupLabel(justName, this, i);
      m_recentNamesLabels[i]->setToolTip(fileName);
      m_recentSceneLay->addWidget(m_recentNamesLabels[i], 0, Qt::AlignTop);
      i++;
    }
  }
  bool ret = true;
  for (int i = 0;
       i < m_recentNamesLabels.count() && i < RECENT_SCENES_MAX_COUNT; i++) {
    ret = ret && connect(m_recentNamesLabels[i], SIGNAL(wasClicked(int)), this,
                         SLOT(onRecentSceneClicked(int)));
  }
  assert(ret);
  m_recentSceneLay->addStretch(1);
}

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

void StartupPopup::refreshExistingScenes() {
  m_existingList->clearScenes();
  TFilePathSet files, allFiles;

  TFilePath scenesFolder =
      TProjectManager::instance()->getCurrentProject()->getScenesPath();

  QFileInfo scenesFolderInfo(toQString(scenesFolder));
  if (scenesFolderInfo.isSymLink()) {
    scenesFolder = TFilePath(scenesFolderInfo.symLinkTarget());
  }

  TFileStatus scenesFolderStatus(scenesFolder);
  if (scenesFolderStatus.doesExist() && scenesFolderStatus.isDirectory() &&
      scenesFolderStatus.isReadable()) {
    try {
      TSystem::readDirectory(files, allFiles, scenesFolder);
    } catch (...) {
    }
  }

  TFilePathSet::iterator it;
  for (it = files.begin(); it != files.end(); ++it) {
    if (it->getType() == "tnz") {
      QString name = QString::fromStdWString(it->getWideName());
      QString path = it->getQString();
      m_existingList->addScene(name, path);
    }
  }
  m_existingList->addScene(tr("New Scene"), ":");

  QList<QString> recentFiles =
      RecentFiles::instance()->getFilesNameList(RecentFiles::Scene);
  m_existingList->findFirstScenePath(recentFiles);
}

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

void StartupPopup::onExistingSceneClicked(int index) {
  QString path = m_existingList->getPath(index);
  if (path == ":") {
    m_scenesTab->setCurrentIndex(1);
    m_nameFld->setFocus();
  } else {
    IoCmd::loadScene(TFilePath(path.toStdWString()), true, true);
    hide();
  }
}

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

void StartupPopup::onCreateButton() {
  if (m_nameFld->text().trimmed() == "") {
    DVGui::warning(tr("The name cannot be empty."));
    m_nameFld->setFocus();
    return;
  }
  if (m_widthFld->getValue() <= 0) {
    DVGui::warning(tr("The width must be greater than zero."));
    m_widthFld->setFocus();
    return;
  }
  if (m_heightFld->getValue() <= 0) {
    DVGui::warning(tr("The height must be greater than zero."));
    m_heightFld->setFocus();
    return;
  }
  if (m_fpsFld->getValue() < 1) {
    DVGui::warning(tr("The frame rate must be 1 or more."));
    m_fpsFld->setFocus();
    return;
  }

  TFilePath scenePath =
      TFilePath(m_pathFld->getPath()) +
      TFilePath(m_nameFld->text().trimmed().toStdWString() + L".tnz");

  if (!TSystem::doesExistFileOrLevel(TFilePath(m_pathFld->getPath()))) {
    QString question;
    question = QObject::tr(
        "The chosen folder path does not exist."
        "\nDo you want to create it?");
    int ret = DVGui::MsgBox(question, QObject::tr("Create"),
                            QObject::tr("Cancel"), 0);
    if (ret == 0 || ret == 2) {
      m_pathFld->setFocus();
      return;
    }
    if (!TSystem::touchParentDir(scenePath)) {
      DVGui::warning(tr("Failed to create the folder."));
      m_pathFld->setFocus();
      return;
    }
  } else if (TSystem::doesExistFileOrLevel(scenePath)) {
    QString question;
    question = QObject::tr(
        "The file name already exists."
        "\nDo you want to overwrite it?");
    int ret = DVGui::MsgBox(question, QObject::tr("Yes"), QObject::tr("No"), 0);
    if (ret == 0 || ret == 2) {
      // no (or closed message box window)
      return;
      ;
    }
  }
  CommandManager::instance()->execute(MI_NewScene);
  TApp::instance()->getCurrentScene()->getScene()->setScenePath(scenePath);
  TDimensionD size =
      TDimensionD(m_widthFld->getValue(), m_heightFld->getValue());
  TDimension res = TDimension(m_xRes, m_yRes);
  double fps     = m_fpsFld->getValue();
  TApp::instance()
      ->getCurrentScene()
      ->getScene()
      ->getProperties()
      ->getOutputProperties()
      ->setFrameRate(fps);
  TApp::instance()->getCurrentScene()->getScene()->getCurrentCamera()->setSize(
      size);
  TApp::instance()->getCurrentScene()->getScene()->getCurrentCamera()->setRes(
      res);
  // save the scene right away
  IoCmd::saveScene();
  // this makes sure the scene viewers update to the right fps
  TApp::instance()->getCurrentScene()->notifySceneSwitched();
  TApp::instance()->getCurrentScene()->notifyNameSceneChange();

  hide();
}

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

void StartupPopup::updateProjectCB() {
  m_updating = true;
  m_projectPaths.clear();
  m_projectsCB->clear();

  TProjectManager *pm = TProjectManager::instance();

  TFilePath sandboxFl = pm->getSandboxProjectFolder();
  TFilePath sandboxFp = sandboxFl + "sandbox_otprj.xml";
  m_projectPaths.push_back(sandboxFp);
  m_projectsCB->addItem("sandbox");

  int idx = 0;
  m_projectsCB->setItemData(idx++, sandboxFl.getQString(), Qt::ToolTipRole);

  std::vector<TFilePath> prjRoots;
  pm->getProjectRoots(prjRoots);
  for (int i = 0; i < prjRoots.size(); i++) {
    TFilePathSet fps;
    TSystem::readDirectory_Dir_ReadExe(fps, prjRoots[i]);

    TFilePathSet::iterator it;
    for (it = fps.begin(); it != fps.end(); ++it) {
      TFilePath fp(*it);
      if (pm->isProject(fp)) {
        m_projectPaths.push_back(pm->projectFolderToProjectPath(fp));
        TFilePath prjFile = pm->getProjectPathByProjectFolder(fp);
        m_projectsCB->addItem(QString::fromStdString(prjFile.getName()));
        m_projectsCB->setItemData(idx++, fp.getQString(), Qt::ToolTipRole);
      }
    }
  }
  // Add in project of current project if outside known Project root folders
  TProjectP currentProject   = pm->getCurrentProject();
  TFilePath currentProjectFP = currentProject->getProjectPath();
  if (m_projectPaths.indexOf(currentProjectFP) == -1) {
    m_projectPaths.push_back(currentProjectFP);
    m_projectsCB->addItem(
        QString::fromStdString(currentProject->getName().getName()));
  }
  int i;
  for (i = 0; i < m_projectPaths.size(); i++) {
    if (pm->getCurrentProjectPath() == m_projectPaths[i]) {
      m_projectsCB->setCurrentIndex(i);
      break;
    }
  }

  m_projectsCB->setToolTip(currentProject->getProjectFolder().getQString());
  m_pathFld->setPath(TApp::instance()
                         ->getCurrentScene()
                         ->getScene()
                         ->getProject()
                         ->getScenesPath()
                         .getQString());
  m_updating = false;
}

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

void StartupPopup::onProjectChanged(int index) {
  if (m_updating) return;
  TFilePath projectFp = m_projectPaths[index];

  TProjectManager *pm = TProjectManager::instance();
  pm->setCurrentProjectPath(projectFp);

  TProjectP currentProject = pm->getCurrentProject();

  // In case the project file was upgraded to current version, save it now
  if (currentProject->getProjectPath() != projectFp) {
    m_projectPaths[index] = currentProject->getProjectPath();
    currentProject->save();
  }

  setupProjectChange();
}

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

void StartupPopup::setupProjectChange() {
  TProjectManager *pm      = TProjectManager::instance();
  TProjectP currentProject = pm->getCurrentProject();

  IoCmd::newScene();
  m_pathFld->setPath(TApp::instance()
                         ->getCurrentScene()
                         ->getScene()
                         ->getProject()
                         ->getScenesPath()
                         .getQString());
  m_fpsFld->setValue(TApp::instance()
                         ->getCurrentScene()
                         ->getScene()
                         ->getProperties()
                         ->getOutputProperties()
                         ->getFrameRate());
  TDimension res = TApp::instance()
                       ->getCurrentScene()
                       ->getScene()
                       ->getCurrentCamera()
                       ->getRes();
  m_xRes = res.lx;
  m_yRes = res.ly;
  m_resXFld->setValue(m_xRes);
  m_resYFld->setValue(m_yRes);
  TDimensionD size = TApp::instance()
                         ->getCurrentScene()
                         ->getScene()
                         ->getCurrentCamera()
                         ->getSize();
  m_widthFld->setValue(size.lx);
  m_heightFld->setValue(size.ly);
  m_dpi = m_xRes / size.lx;
  m_dpiFld->setValue(m_dpi);
}

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

void StartupPopup::loadPresetList() {
  m_presetCombo->clear();
  m_presetCombo->addItem("...");
  m_presetListFile = ToonzFolder::getReslistPath(false).getQString();
  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_presetCombo->addItem(line);
    }
  }
  m_presetCombo->setCurrentIndex(0);
}

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

void StartupPopup::savePresetList() {
  QFile file(m_presetListFile);
  if (!file.open(QIODevice::WriteOnly | QIODevice::Text)) return;
  QTextStream out(&file);
  int n = m_presetCombo->count();
  for (int i = 1; i < n; i++) out << m_presetCombo->itemText(i) << "\n";
}

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

void StartupPopup::addPreset() {
  int xRes  = (int)(m_widthFld->getValue() * m_dpi);
  int yRes  = (int)(m_heightFld->getValue() * m_dpi);
  double lx = m_widthFld->getValue();
  double ly = m_heightFld->getValue();
  double ar = m_widthFld->getValue() / m_heightFld->getValue();

  QString presetString;
  presetString = QString::number(xRes) + "x" + QString::number(yRes) + ", " +
                 removeZeros(QString::number(lx)) + "x" +
                 removeZeros(QString::number(ly)) + ", " +
                 aspectRatioValueToString(ar);

  bool ok;
  QString qs;
  while (1) {
    qs = DVGui::getText(tr("Preset name"),
                        tr("Enter the name for %1").arg(presetString), "", &ok);

    if (!ok) return;

    if (qs.indexOf(",") != -1)
      QMessageBox::warning(this, tr("Error : Preset Name is Invalid"),
                           tr("The preset name must not use ','(comma)."));
    else
      break;
  }

  int oldn = m_presetCombo->count();
  m_presetCombo->addItem(qs + "," + presetString);
  int newn = m_presetCombo->count();
  m_presetCombo->blockSignals(true);
  m_presetCombo->setCurrentIndex(m_presetCombo->count() - 1);
  m_presetCombo->blockSignals(false);

  savePresetList();
}

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

void StartupPopup::removePreset() {
  int index = m_presetCombo->currentIndex();
  if (index <= 0) return;

  // confirmation dialog
  int ret = DVGui::MsgBox(QObject::tr("Deleting \"%1\".\nAre you sure?")
                              .arg(m_presetCombo->currentText()),
                          QObject::tr("Delete"), QObject::tr("Cancel"));
  if (ret == 0 || ret == 2) return;

  m_presetCombo->removeItem(index);
  m_presetCombo->setCurrentIndex(0);
  savePresetList();
}

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

void StartupPopup::onPresetSelected(const QString &str) {
  if (str == custom || str.isEmpty()) return;
  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,
                        false)) {
    m_xRes = xres;
    m_yRes = yres;
    // The current solution is to preserve the DPI so that scenes are less
    // likely to become incompatible with pixels only mode in the future
    // Commented below is the default behavior of the camera settings widget
    // m_widthFld->setValue(m_heightFld->getValue() * ar);
    // m_dpiFld->setValue(m_xRes / m_widthFld->getValue());

    // here is the system that preserves dpi
    m_widthFld->setValue((double)xres / (double)m_dpi);
    m_heightFld->setValue((double)yres / (double)m_dpi);
    if (Preferences::instance()->getPixelsOnly()) {
      m_widthFld->setValue((double)xres / Stage::standardDpi);
      m_heightFld->setValue((double)yres / Stage::standardDpi);
      m_dpiFld->setValue(Stage::standardDpi);
    }
    m_resXFld->setValue(m_xRes);
    m_resYFld->setValue(m_yRes);
  } else {
    QMessageBox::warning(
        this, tr("Bad camera preset"),
        tr("'%1' doesn't seem to be a well formed camera preset. \n"
           "Possibly the preset file has been corrupted")
            .arg(str));
  }
}

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

bool StartupPopup::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;
}

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

double StartupPopup::aspectRatioStringToValue(const QString &s) {
  if (s == "") {
    return 1;
  }
  int i = s.indexOf("/");
  if (i <= 0 || i + 1 >= s.length()) return s.toDouble();
  int num = s.left(i).toInt();
  int den = s.mid(i + 1).toInt();
  if (den <= 0) den = 1;
  return (double)num / (double)den;
}

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

// A/R : value => string (e.g. '4/3' or '1.23')
QString StartupPopup::aspectRatioValueToString(double value, int width,
                                               int height) {
  double v = value;

  if (width != 0 && height != 0) {
    if (areAlmostEqual(value, (double)width / (double)height, 1e-3))
      return QString("%1/%2").arg(width).arg(height);
  }

  double iv = tround(v);
  if (fabs(iv - v) > 0.01) {
    for (int d = 2; d < 20; d++) {
      int n = tround(v * d);
      if (fabs(n - v * d) <= 0.01)
        return QString::number(n) + "/" + QString::number(d);
    }
    return QString::number(value, 'f', 5);
  } else {
    return QString::number((int)iv);
  }
}

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

void StartupPopup::onNewProjectButtonPressed() {
  CommandManager::instance()->execute(MI_NewProject);
}

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

void StartupPopup::onOpenProjectButtonPressed() {
  TProjectManager *pm = TProjectManager::instance();

  FileField::BrowserPopupController *bpc =
      FileField::getBrowserPopupController();
  if (!bpc) return;

  QString directory;
  TFilePath cfp = pm->getCurrentProject()->getProjectFolder();
  bpc->openPopup(QStringList(), true, cfp.getQString(), this);
  if (bpc->isExecute()) directory = bpc->getPath(false);

  if (!directory.isEmpty()) {
    TFilePath fp(directory);
    TFilePath pfp = pm->projectFolderToProjectPath(fp);

    if (TSystem::doesExistFileOrLevel(pfp))
      pm->setCurrentProjectPath(pfp);
    else
      pm->setCurrentProjectPath(fp);

    setupProjectChange();
    updateProjectCB();
    refreshExistingScenes();
  }
}

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

void StartupPopup::onExploreProjectButtonPressed() {
  TProjectManager *pm = TProjectManager::instance();
  TFilePath cfp       = pm->getCurrentProject()->getProjectFolder();

  QDesktopServices::openUrl(QUrl("file:///" + cfp.getQString()));
}

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

void StartupPopup::onSceneChanged() {
  // close the box if a recent scene has been selected
  if (!TApp::instance()->getCurrentScene()->getScene()->isUntitled()) {
    hide();
  } else {
    updateProjectCB();
    refreshExistingScenes();
  }
}

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

void StartupPopup::onDpiChanged() {
  if (Preferences::instance()->getPixelsOnly()) {
    m_dpi = Stage::standardDpi;
    m_dpiFld->setValue(Stage::standardDpi);
    updateResolution();
  } else {
    m_dpi = m_dpiFld->getValue();
    updateResolution();
  }
}

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

void StartupPopup::onLoadSceneButtonPressed() {
  CommandManager::instance()->execute(MI_LoadScene);
}

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

void StartupPopup::onRecentSceneClicked(int index) {
  if (index < 0) return;
  QString path =
      RecentFiles::instance()->getFilePath(index, RecentFiles::Scene);
  if (!TSystem::doesExistFileOrLevel(TFilePath(path.toStdWString()))) {
    RecentFiles::instance()->removeFilePath(index, RecentFiles::Scene);
    RecentFiles::instance()->refreshRecentFilesMenu(RecentFiles::Scene);
    for (int i = 0;
         i < m_recentNamesLabels.count() && i < RECENT_SCENES_MAX_COUNT; i++) {
      disconnect(m_recentNamesLabels[i]);
    }
    QString msg = QObject::tr("The selected scene could not be found.");
    DVGui::warning(msg);
    refreshRecentScenes();
  } else {
    if (RecentFiles::instance()->getFileProject(index) != "-") {
      QString projectName = RecentFiles::instance()->getFileProject(index);
      int projectIndex    = m_projectsCB->findText(projectName);
      if (projectIndex >= 0) {
        TFilePath projectFp = m_projectPaths[projectIndex];
        TProjectManager::instance()->setCurrentProjectPath(projectFp);
      }
    }
    IoCmd::loadScene(TFilePath(path.toStdWString()), false, true);
    QString origProjectName = RecentFiles::instance()->getFileProject(index);
    QString projectName     = QString::fromStdString(TApp::instance()
                                                         ->getCurrentScene()
                                                         ->getScene()
                                                         ->getProject()
                                                         ->getName()
                                                         .getName());
    if (origProjectName == "-" || origProjectName != projectName) {
      QString fileName =
          RecentFiles::instance()->getFilePath(index, RecentFiles::Scene);
      RecentFiles::instance()->removeFilePath(index, RecentFiles::Scene);
      RecentFiles::instance()->addFilePath(fileName, RecentFiles::Scene,
                                           projectName);
    } else
      RecentFiles::instance()->moveFilePath(index, 0, RecentFiles::Scene);
    RecentFiles::instance()->refreshRecentFilesMenu(RecentFiles::Scene);
    hide();
  }
}

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

void StartupPopup::onCameraUnitChanged(int index) {
  Preferences *pref = Preferences::instance();
  QStringList type;
  // preference value should not be translated
  type << "pixel"
       << "cm"
       << "mm"
       << "inch"
       << "field";

  double width  = m_widthFld->getValue();
  double height = m_heightFld->getValue();
  if (index != 0) {
    pref->setValue(pixelsOnly, false);
    pref->setValue(cameraUnits, type[index]);
    m_widthFld->setDecimals(4);
    m_heightFld->setDecimals(4);
    m_resTextLabel->show();
    m_resXFld->show();
    m_resYFld->show();
    m_resXLabel->show();
    m_dpiFld->show();
    m_dpiLabel->show();
    m_widthFld->setMeasure("camera.lx");
    m_heightFld->setMeasure("camera.ly");
    m_widthFld->setValue(width);
    m_heightFld->setValue(height);
  } else {
    pref->setValue(pixelsOnly, true);
    pref->setValue(linearUnits, "pixel");
    pref->setValue(cameraUnits, "pixel");
    m_widthFld->setDecimals(0);
    m_heightFld->setDecimals(0);
    m_resTextLabel->hide();
    m_resXFld->hide();
    m_resYFld->hide();
    m_resXLabel->hide();
    m_dpiFld->hide();
    m_dpiLabel->hide();
    m_dpiFld->setValue(Stage::standardDpi);
    m_widthFld->setMeasure("camera.lx");
    m_heightFld->setMeasure("camera.ly");
    m_widthFld->setValue(m_xRes / Stage::standardDpi);
    m_heightFld->setValue(m_yRes / Stage::standardDpi);
  }
}

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

void StartupPopup::onShowAtStartChanged(int index) {
  Preferences::instance()->setValue(startupPopupEnabled, index == Qt::Checked);
}

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

void StartupPopup::onAutoSaveOnChanged(int index) {
  Preferences::instance()->setValue(autosaveEnabled, index == Qt::Checked);
  m_autoSaveTimeFld->setEnabled(index);
}

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

void StartupPopup::onAutoSaveTimeChanged() {
  Preferences::instance()->setValue(autosavePeriod,
                                    m_autoSaveTimeFld->getValue());
}

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

void StartupPopup::updateResolution() {
  if (Preferences::instance()->getPixelsOnly()) {
    if (m_dpiFld->getValue() != Stage::standardDpi) {
      m_dpiFld->setValue(Stage::standardDpi);
    }
    m_xRes = m_widthFld->getValue() * Stage::standardDpi;
    m_yRes = m_heightFld->getValue() * Stage::standardDpi;
    m_resXFld->setValue(m_xRes);
    m_resYFld->setValue(m_yRes);
  } else {
    m_xRes = m_widthFld->getValue() * m_dpi;
    m_yRes = m_heightFld->getValue() * m_dpi;
    m_resXFld->setValue(m_xRes);
    m_resYFld->setValue(m_yRes);
  }
  m_presetCombo->setCurrentIndex(0);
}

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

void StartupPopup::updateSize() {
  m_xRes = m_resXFld->getValue();
  m_yRes = m_resYFld->getValue();
  if (Preferences::instance()->getPixelsOnly()) {
    if (m_dpiFld->getValue() != Stage::standardDpi) {
      m_dpiFld->setValue(Stage::standardDpi);
    }
    m_widthFld->setValue((double)m_xRes / Stage::standardDpi);
    m_heightFld->setValue((double)m_yRes / Stage::standardDpi);
  } else {
    m_widthFld->setValue((double)m_xRes / m_dpi);
    m_heightFld->setValue((double)m_yRes / m_dpi);
  }
  m_presetCombo->setCurrentIndex(0);
}

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

StartupLabel::StartupLabel(const QString &text, QWidget *parent, int index)
    : QLabel(parent), m_index(index) {
  setText(text);
  setObjectName("StartupLabel");
}

StartupLabel::~StartupLabel() {}

void StartupLabel::mousePressEvent(QMouseEvent *event) {
  m_text              = text();
  std::string strText = m_text.toStdString();
  emit wasClicked(m_index);
}

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

StartupScenesList::StartupScenesList(QWidget *parent, const QSize &iconSize)
    : QListWidget(parent), m_iconSize(iconSize) {
  setObjectName("StartupScenesList");

  setMovement(QListWidget::Static);
  setFlow(QListView::Flow::LeftToRight);
  setViewMode(QListWidget::IconMode);
  setIconSize(m_iconSize);
  setUniformItemSizes(true);
  setMouseTracking(true);
  horizontalScrollBar()->setCursor(Qt::ArrowCursor);
  verticalScrollBar()->setCursor(Qt::ArrowCursor);

  bool ret = connect(this, SIGNAL(itemClicked(QListWidgetItem *)), this,
                     SLOT(onItemClicked(QListWidgetItem *)));
  assert(ret);

  clear();
}

StartupScenesList::~StartupScenesList() {}

QPixmap StartupScenesList::createScenePreview(const QString &name,
                                              const TFilePath &fp) {
  TFilePath iconPath = ToonzScene::getIconPath(fp);
  if (TFileStatus(iconPath).doesExist()) {
    QPixmap scenePreview(iconPath.getQString());
    if (!scenePreview.isNull()) {
      QPixmap pixmap(m_iconSize);
      pixmap.fill(Qt::transparent);
      QPainter painter(&pixmap);
      QPixmap scaledPixmap =
          scenePreview.scaled(m_iconSize, Qt::AspectRatioMode::KeepAspectRatio);
      painter.drawPixmap((m_iconSize.width() - scaledPixmap.width()) / 2,
                         (m_iconSize.height() - scaledPixmap.height()) / 2,
                         scaledPixmap);
      QPen pen(Qt::black);
      pen.setStyle(Qt::DotLine);
      painter.setPen(pen);
      painter.drawRect((m_iconSize.width() - scaledPixmap.width()) / 2,
                       (m_iconSize.height() - scaledPixmap.height()) / 2,
                       scaledPixmap.width() - 1, scaledPixmap.height() - 1);
      return pixmap;
    }
  }
  QPixmap pixmap(m_iconSize);
  pixmap.fill(Qt::white);
  return pixmap;
}

void StartupScenesList::clearScenes() { clear(); }

void StartupScenesList::addScene(const QString &name, const QString &path) {
  QPixmap pixmap;
  if (path == ":")
    pixmap = generateIconPixmap("new_scene", qreal(1.0), m_iconSize,
                                Qt::KeepAspectRatio);
  else
    pixmap = createScenePreview(name, TFilePath(path));
  QIcon icon(pixmap);

  QListWidgetItem *lw = new QListWidgetItem(name);
  lw->setData(Qt::UserRole, path);
  lw->setToolTip(name);

  lw->setIcon(icon);
  addItem(lw);
}

void StartupScenesList::findFirstScenePath(const QList<QString> paths) {
  int scenes = count();
  if (scenes == 0) {
    clearSelection();
    return;
  }

  QList<QString> scenesPaths;
  for (int i = 0; i < scenes; ++i) {
    scenesPaths.append(item(i)->data(Qt::UserRole).toString());
  }

  int sceneIndex = 0;
  int pathsCount = paths.count();
  for (int i = 0; i < pathsCount; ++i) {
    QString filename =
        RecentFiles::instance()->getFilePath(i, RecentFiles::Scene);
    int index = scenesPaths.indexOf(filename);
    if (index >= 0) {
      sceneIndex = index;
      break;
    }
  }

  setCurrentItem(item(sceneIndex));
  clearSelection();
}

void StartupScenesList::mouseMoveEvent(QMouseEvent *event) {
  QListWidgetItem *it = itemAt(event->pos());
  if (it)
    setCursor(Qt::PointingHandCursor);
  else
    unsetCursor();
  setCurrentItem(it);
}

void StartupScenesList::leaveEvent(QEvent *event) {
  unsetCursor();
  clearSelection();
}

void StartupScenesList::onItemClicked(QListWidgetItem *item) {
  emit itemClicked(row(item));
}

OpenPopupCommandHandler<StartupPopup> openStartupPopup(MI_StartupPopup);