object.cpp

/*
 
Pencil2D - Traditional Animation Software
Copyright (C) 2005-2007 Patrick Corrieri & Pascal Naidon
Copyright (C) 2012-2020 Matthew Chiawen Chang
 
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; version 2 of the License.
 
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
 
*/
#include "object.h"
 
#include <QDomDocument>
#include <QTextStream>
#include <QProgressDialog>
#include <QApplication>
#include <QFile>
#include <QFileInfo>
#include <QDir>
#include <QDebug>
#include <QDateTime>
#include <QImageWriter>
#include <QRegularExpression>
 
#include "layer.h"
#include "layerbitmap.h"
#include "layervector.h"
#include "layersound.h"
#include "layercamera.h"
 
#include "util.h"
#include "bitmapimage.h"
#include "vectorimage.h"
#include "fileformat.h"
#include "activeframepool.h"
 
 
Object::Object()
{
    mActiveFramePool.reset(new ActiveFramePool);
}
 
Object::~Object()
{
    mActiveFramePool->clear();
 
    for (Layer* layer : mLayers)
        delete layer;
    mLayers.clear();
 
    deleteWorkingDir();
}
 
void Object::init()
{
    createWorkingDir();
 
    // default palette
    loadDefaultPalette();
}
 
QDomElement Object::saveXML(QDomDocument& doc) const
{
    QDomElement objectTag = doc.createElement("object");
 
    for (Layer* layer : mLayers)
    {
        QDomElement layerTag = layer->createDomElement(doc);
        objectTag.appendChild(layerTag);
    }
    return objectTag;
}
 
bool Object::loadXML(const QDomElement& docElem, ProgressCallback progressForward)
{
    if (docElem.isNull())
    {
        return false;
    }
 
    const QString dataDirPath = mDataDirPath;
 
    for (QDomNode node = docElem.firstChild(); !node.isNull(); node = node.nextSibling())
    {
        QDomElement element = node.toElement(); // try to convert the node to an element.
        if (element.tagName() != "layer")
        {
            continue;
        }
 
        Layer* newLayer;
        switch (element.attribute("type").toInt())
        {
        case Layer::BITMAP:
            newLayer = new LayerBitmap(getUniqueLayerID());
            break;
        case Layer::VECTOR:
            newLayer = new LayerVector(getUniqueLayerID());
            break;
        case Layer::SOUND:
            newLayer = new LayerSound(getUniqueLayerID());
            break;
        case Layer::CAMERA:
            newLayer = new LayerCamera(getUniqueLayerID());
            break;
        default:
            Q_UNREACHABLE();
        }
        mLayers.append(newLayer);
        newLayer->loadDomElement(element, dataDirPath, progressForward);
    }
    return true;
}
 
LayerBitmap* Object::addNewBitmapLayer()
{
    LayerBitmap* layerBitmap = new LayerBitmap(getUniqueLayerID());
    mLayers.append(layerBitmap);
 
    layerBitmap->addNewKeyFrameAt(1);
 
    return layerBitmap;
}
 
LayerVector* Object::addNewVectorLayer()
{
    LayerVector* layerVector = new LayerVector(getUniqueLayerID());
    mLayers.append(layerVector);
 
    layerVector->addNewKeyFrameAt(1);
 
    return layerVector;
}
 
LayerSound* Object::addNewSoundLayer()
{
    LayerSound* layerSound = new LayerSound(getUniqueLayerID());
    mLayers.append(layerSound);
 
    // No default keyFrame at position 1 for Sound layer.
 
    return layerSound;
}
 
LayerCamera* Object::addNewCameraLayer()
{
    LayerCamera* layerCamera = new LayerCamera(getUniqueLayerID());
    mLayers.append(layerCamera);
 
    layerCamera->addNewKeyFrameAt(1);
 
    return layerCamera;
}
 
void Object::createWorkingDir()
{
    QString projectName;
    if (mFilePath.isEmpty())
    {
        projectName = "Default";
    }
    else
    {
        QFileInfo fileInfo(mFilePath);
        projectName = fileInfo.completeBaseName();
    }
    QDir dir(QDir::tempPath());
 
    QString strWorkingDir;
    do
    {
        strWorkingDir = QString("%1/Pencil2D/%2_%3_%4/").arg(QDir::tempPath(),
                                                             projectName,
                                                             PFF_TMP_DECOMPRESS_EXT,
                                                             uniqueString(8));
    }
    while(dir.exists(strWorkingDir));
 
    dir.mkpath(strWorkingDir);
    mWorkingDirPath = strWorkingDir;
 
    QDir dataDir(strWorkingDir + PFF_DATA_DIR);
    dataDir.mkpath(".");
 
    mDataDirPath = dataDir.absolutePath();
}
 
void Object::deleteWorkingDir() const
{
    if (!mWorkingDirPath.isEmpty())
    {
        QDir dir(mWorkingDirPath);
        bool ok = dir.removeRecursively();
        Q_ASSERT(ok);
    }
}
 
void Object::setWorkingDir(const QString& path)
{
    QDir dir(path);
    Q_ASSERT(dir.exists());
    mWorkingDirPath = path;
}
 
int Object::getMaxLayerID()
{
    int maxId = 0;
    for (Layer* iLayer : mLayers)
    {
        if (iLayer->id() > maxId)
        {
            maxId = iLayer->id();
        }
    }
    return maxId;
}
 
int Object::getUniqueLayerID()
{
    return 1 + getMaxLayerID();
}
 
Layer* Object::getLayer(int i) const
{
    if (i < 0 || i >= getLayerCount())
    {
        return nullptr;
    }
 
    return mLayers.at(i);
}
 
Layer* Object::getLayerBelow(int i, Layer::LAYER_TYPE type) const
{
    for (; i >= 0; --i)
    {
        Layer* layerCheck = getLayer(i);
        Q_ASSERT(layerCheck);
        if (layerCheck->type() == type)
        {
            return layerCheck;
        }
    }
 
    return nullptr;
}
 
Layer* Object::findLayerById(int layerId) const
{
    for(Layer* layer : mLayers)
    {
        if (layer->id() == layerId)
        {
            return layer;
        }
    }
    return nullptr;
}
 
Layer* Object::findLayerByName(const QString& strName, Layer::LAYER_TYPE type) const
{
    bool bCheckType = (type != Layer::UNDEFINED);
    for (Layer* layer : mLayers)
    {
        bool isTypeMatch = (bCheckType) ? (type == layer->type()) : true;
        if (isTypeMatch && layer->name() == strName)
        {
            return layer;
        }
    }
    return nullptr;
}
 
Layer* Object::takeLayer(int layerId)
{
    // Removes the layer from this Object and returns it
    // The ownership of this layer has been transfer to the caller
    int index = -1;
    for (int i = 0; i< mLayers.length(); ++i)
    {
        Layer* layer = mLayers[i];
        if (layer->id() == layerId)
        {
            index = i;
            break;
        }
    }
 
    if (index == -1) { return nullptr; }
 
    Layer* layer = mLayers.takeAt(index);
    return layer;
}
 
bool Object::swapLayers(int i, int j)
{
    bool canSwap = canSwapLayers(i, j);
    if (!canSwap) { return false; }
 
    if (i != j)
    {
#if QT_VERSION >= QT_VERSION_CHECK(5, 13, 0)
        mLayers.swapItemsAt(i, j);
#else
        mLayers.swap(i, j);
#endif
    }
    return true;
}
 
bool Object::canSwapLayers(int layerIndexLeft, int layerIndexRight) const
{
    if (layerIndexLeft < 0 || layerIndexLeft >= mLayers.size())
    {
        return false;
    }
 
    if (layerIndexRight < 0 || layerIndexRight >= mLayers.size())
    {
        return false;
    }
 
    Layer* firstLayer = mLayers.first();
    Layer* leftLayer = mLayers.at(layerIndexLeft);
    Layer* rightLayer = mLayers.at(layerIndexRight);
 
    // The bottom layer can't be swapped!
    if ((leftLayer->type() == Layer::CAMERA ||
         rightLayer->type() == Layer::CAMERA) &&
         (firstLayer == leftLayer || firstLayer == rightLayer)) {
        return false;
    }
    return true;
}
 
bool Object::canDeleteLayer(int index) const
{
    // We expect the first camera layer to be at the bottom and this layer must not be deleted!
    if (index == 0) {
        return false;
    }
 
    if (mLayers.at(index) == nullptr)
    {
        return false;
    }
 
    return true;
}
 
void Object::deleteLayer(int i)
{
    if (i > -1 && i < mLayers.size())
    {
        delete mLayers.takeAt(i);
    }
}
 
void Object::deleteLayer(Layer* layer)
{
    auto it = std::find(mLayers.begin(), mLayers.end(), layer);
 
    if (it != mLayers.end())
    {
        delete layer;
        mLayers.erase(it);
    }
}
 
bool Object::addLayer(Layer* layer)
{
    if (layer == nullptr || mLayers.contains(layer))
    {
        return false;
    }
    layer->setId(getUniqueLayerID());
    mLayers.append(layer);
    return true;
}
 
ColorRef Object::getColor(int index) const
{
    ColorRef result(Qt::white, tr("error"));
    if (index > -1 && index < mPalette.size())
    {
        result = mPalette.at(index);
    }
    return result;
}
 
void Object::setColor(int index, const QColor& newColor)
{
    Q_ASSERT(index >= 0);
 
    mPalette[index].color = newColor;
}
 
void Object::setColorRef(int index, const ColorRef& newColorRef)
{
    mPalette[index] = newColorRef;
}
 
void Object::movePaletteColor(int start, int end)
{
    mPalette.move(start, end);
}
 
void Object::moveVectorColor(int start, int end)
{
    for (Layer* layer : mLayers)
    {
        if (layer->type() == Layer::VECTOR)
        {
            static_cast<LayerVector*>(layer)->moveColor(start, end);
        }
    }
}
 
void Object::addColorAtIndex(int index, const ColorRef& newColor)
{
    mPalette.insert(index, newColor);
}
 
bool Object::isColorInUse(int index) const
{
    for (Layer* layer : mLayers)
    {
        if (layer->type() == Layer::VECTOR)
        {
            LayerVector* layerVector = static_cast<LayerVector*>(layer);
 
            if (layerVector->usesColor(index))
            {
                return true;
            }
        }
    }
    return false;
}
 
void Object::removeColor(int index)
{
    for (Layer* layer : mLayers)
    {
        if (layer->type() == Layer::VECTOR)
        {
            LayerVector* layerVector = static_cast<LayerVector*>(layer);
            layerVector->removeColor(index);
        }
    }
 
    mPalette.removeAt(index);
 
    // update the vector pictures using that color!
}
 
void Object::renameColor(int i, const QString& text)
{
    mPalette[i].name = text;
}
 
QString Object::savePalette(const QString& dataFolder) const
{
    QString fullPath = QDir(dataFolder).filePath(PFF_PALETTE_FILE);
    bool ok = exportPalette(fullPath);
    if (ok)
        return fullPath;
    return "";
}
 
void Object::exportPaletteGPL(QFile& file) const
{
    QString fileName = QFileInfo(file).baseName();
    QTextStream out(&file);
 
    out << "GIMP Palette" << "\n";
    out << "Name: " << fileName << "\n";
    out << "#" << "\n";
 
    for (const ColorRef& ref : mPalette)
    {
        QColor toRgb = ref.color.toRgb();
        out << QString("%1 %2 %3").arg(toRgb.red()).arg(toRgb.green()).arg(toRgb.blue());
        out << " " << ref.name << "\n";
    }
}
 
void Object::exportPalettePencil(QFile& file) const
{
    QTextStream out(&file);
 
    QDomDocument doc("PencilPalette");
    QDomElement root = doc.createElement("palette");
    doc.appendChild(root);
    for (const ColorRef& ref : mPalette)
    {
        QDomElement tag = doc.createElement("Color");
        tag.setAttribute("name", ref.name);
        tag.setAttribute("red", ref.color.red());
        tag.setAttribute("green", ref.color.green());
        tag.setAttribute("blue", ref.color.blue());
        tag.setAttribute("alpha", ref.color.alpha());
        root.appendChild(tag);
    }
    int indentSize = 2;
    doc.save(out, indentSize);
}
 
bool Object::exportPalette(const QString& filePath) const
{
    QFile file(filePath);
    if (!file.open(QFile::WriteOnly | QFile::Text))
    {
        qDebug("Error: cannot export palette");
        return false;
    }
 
    if (file.fileName().endsWith(".gpl", Qt::CaseInsensitive))
        exportPaletteGPL(file);
    else
        exportPalettePencil(file);
 
    return true;
}
 
/* Import the .gpl GIMP palette format.
 *
 * This functions supports importing both the old and new .gpl formats.
 * This should load colors the same as GIMP, with the following intentional exceptions:
 * - Whitespace before and after a name does not appear in the name
 * - The last line is processed, even if there is not a trailing newline
 * - Colors without a name will use our automatic naming system rather than "Untitled"
 */
void Object::importPaletteGPL(QFile& file)
{
    QTextStream in(&file);
    QString line;
 
    // The first line must start with "GIMP Palette"
    // Displaying an error here would be nice
    in.readLineInto(&line);
    if (!line.startsWith("GIMP Palette")) return;
 
    in.readLineInto(&line);
 
    // There are two GPL formats, the new one must start with "Name: " on the second line
    if (line.startsWith("Name: "))
    {
        in.readLineInto(&line);
        // The new format contains an optional third line starting with "Columns: "
        if (line.startsWith("Columns: "))
        {
            // Skip to the next line
            in.readLineInto(&line);
        }
    }
 
    // Colors inherit the value from the previous color for missing channels
    // Some palettes may rely on this behavior, so we should try to replicate it
    QColor prevColor(Qt::black);
 
    do
    {
        // Ignore comments and empty lines
        if (line.isEmpty() || line.startsWith("#")) continue;
 
        int red = 0;
        int green = 0;
        int blue = 0;
 
        int countInLine = 0;
        QString name = "";
#if QT_VERSION >= QT_VERSION_CHECK(5, 14, 0)
        for(const QString& snip : line.split(QRegularExpression("\\s|\\t"), Qt::SkipEmptyParts))
#else
        for(const QString& snip : line.split(QRegularExpression("\\s|\\t"), QString::SkipEmptyParts))
#endif
        {
            switch (countInLine)
            {
            case 0:
                red = snip.toInt();
                break;
            case 1:
                green = snip.toInt();
                break;
            case 2:
                blue = snip.toInt();
                break;
            default:
                name += snip + " ";
            }
            countInLine++;
        }
 
        // trim additional spaces
        name = name.trimmed();
 
        // Get values from previous color if necessary
        if (countInLine < 2) green = prevColor.green();
        if (countInLine < 3) blue = prevColor.blue();
 
        // GIMP assigns colors the name "Untitled" by default now,
        // so in addition to missing names, we also use automatic
        // naming for this
        if (name.isEmpty() || name == "Untitled") name = QString();
 
        QColor color(red, green, blue);
        if (color.isValid())
        {
            mPalette.append(ColorRef(color, name));
            prevColor = color;
        }
    } while (in.readLineInto(&line));
}
 
void Object::importPalettePencil(QFile& file)
{
    QDomDocument doc;
    doc.setContent(&file);
 
    QDomElement docElem = doc.documentElement();
    QDomNode tag = docElem.firstChild();
    while (!tag.isNull())
    {
        QDomElement e = tag.toElement(); // try to convert the node to an element.
        if (!e.isNull())
        {
            QString name = e.attribute("name");
            int r = e.attribute("red").toInt();
            int g = e.attribute("green").toInt();
            int b = e.attribute("blue").toInt();
            int a = e.attribute("alpha", "255").toInt();
            mPalette.append(ColorRef(QColor(r, g, b, a), name));
        }
        tag = tag.nextSibling();
    }
}
 
void Object::openPalette(const QString& filePath)
{
    if (!QFile::exists(filePath))
    {
        return;
    }
 
    mPalette.clear();
    importPalette(filePath);
}
 
/*
 * Imports palette, e.g. appends to palette
*/
bool Object::importPalette(const QString& filePath)
{
    QFile file(filePath);
 
    if (!file.open(QFile::ReadOnly))
    {
        return false;
    }
 
    if (file.fileName().endsWith(".gpl", Qt::CaseInsensitive))
    {
        importPaletteGPL(file);
    } else {
        importPalettePencil(file);
    }
    return true;
}
 
 
void Object::loadDefaultPalette()
{
    mPalette.clear();
    addColor(ColorRef(QColor(Qt::black), tr("Black")));
    addColor(ColorRef(QColor(Qt::red), tr("Red")));
    addColor(ColorRef(QColor(Qt::darkRed), tr("Dark Red")));
    addColor(ColorRef(QColor(255, 128, 0), tr("Orange")));
    addColor(ColorRef(QColor(128, 64, 0), tr("Dark Orange")));
    addColor(ColorRef(QColor(Qt::yellow), tr("Yellow")));
    addColor(ColorRef(QColor(Qt::darkYellow), tr("Dark Yellow")));
    addColor(ColorRef(QColor(Qt::green), tr("Green")));
    addColor(ColorRef(QColor(Qt::darkGreen), tr("Dark Green")));
    addColor(ColorRef(QColor(Qt::cyan), tr("Cyan")));
    addColor(ColorRef(QColor(Qt::darkCyan), tr("Dark Cyan")));
    addColor(ColorRef(QColor(Qt::blue), tr("Blue")));
    addColor(ColorRef(QColor(Qt::darkBlue), tr("Dark Blue")));
    addColor(ColorRef(QColor(255, 255, 255), tr("White")));
    addColor(ColorRef(QColor(220, 220, 229), tr("Very Light Grey")));
    addColor(ColorRef(QColor(Qt::lightGray), tr("Light Grey")));
    addColor(ColorRef(QColor(Qt::gray), tr("Grey")));
    addColor(ColorRef(QColor(Qt::darkGray), tr("Dark Grey")));
    addColor(ColorRef(QColor(255, 227, 187), tr("Pale Orange Yellow")));
    addColor(ColorRef(QColor(221, 196, 161), tr("Pale Grayish Orange Yellow")));
    addColor(ColorRef(QColor(255, 214, 156), tr("Orange Yellow ")));
    addColor(ColorRef(QColor(207, 174, 127), tr("Grayish Orange Yellow")));
    addColor(ColorRef(QColor(255, 198, 116), tr("Light Orange Yellow")));
    addColor(ColorRef(QColor(227, 177, 105), tr("Light Grayish Orange Yellow")));
}
 
void Object::paintImage(QPainter& painter,int frameNumber,
                        bool background,
                        bool antialiasing) const
{
    updateActiveFrames(frameNumber);
 
    painter.setRenderHint(QPainter::Antialiasing, true);
    painter.setRenderHint(QPainter::SmoothPixmapTransform, true);
    painter.setCompositionMode(QPainter::CompositionMode_SourceOver);
 
    // paints the background
    if (background)
    {
        painter.setPen(Qt::NoPen);
        painter.setBrush(Qt::white);
        painter.setWorldMatrixEnabled(false);
        painter.drawRect(QRect(0, 0, painter.device()->width(), painter.device()->height()));
        painter.setWorldMatrixEnabled(true);
    }
 
    for (Layer* layer : mLayers)
    {
        if (!layer->visible())
        {
            continue;
        }
 
        painter.setOpacity(1.0);
 
        if (layer->type() == Layer::BITMAP)
        {
 
            LayerBitmap* layerBitmap = static_cast<LayerBitmap*>(layer);
            BitmapImage* bitmap = layerBitmap->getLastBitmapImageAtFrame(frameNumber);
            if (bitmap)
            {
                painter.setOpacity(bitmap->getOpacity());
                bitmap->paintImage(painter);
            }
 
        }
        // paints the vector images
        if (layer->type() == Layer::VECTOR)
        {
            LayerVector* layerVector = static_cast<LayerVector*>(layer);
            VectorImage* vec = layerVector->getLastVectorImageAtFrame(frameNumber, 0);
            if (vec)
            {
                painter.setOpacity(vec->getOpacity());
                vec->paintImage(painter, *this, false, false, antialiasing);
            }
        }
    }
}
 
QString Object::copyFileToDataFolder(const QString& strFilePath)
{
    if (!QFile::exists(strFilePath))
    {
        qDebug() << "[Object] sound file doesn't exist: " << strFilePath;
        return "";
    }
 
    QString sNewFileName = "sound_";
    sNewFileName += QDateTime::currentDateTime().toString("yyyyMMdd_HHmmss_zzz.");
    sNewFileName += QFileInfo(strFilePath).suffix();
 
    QString destFile = QDir(mDataDirPath).filePath(sNewFileName);
 
    if (QFile::exists(destFile))
    {
        QFile::remove(destFile);
    }
 
    bool bCopyOK = QFile::copy(strFilePath, destFile);
    if (!bCopyOK)
    {
        qDebug() << "[Object] couldn't copy sound file to data folder: " << strFilePath;
        return "";
    }
 
    return destFile;
}
 
Status Object::exportFrames(int frameStart, int frameEnd,
                          const LayerCamera* cameraLayer,
                          QSize exportSize,
                          QString filePath,
                          QString format,
                          bool transparency,
                          bool exportKeyframesOnly,
                          const QString& layerName,
                          bool antialiasing,
                          QProgressDialog* progress = nullptr,
                          int progressMax = 50) const
{
    Q_ASSERT(cameraLayer);
 
    QString extension = "";
    QString formatStr = format;
    if (formatStr == "PNG" || formatStr == "png")
    {
        format = "PNG";
        extension = ".png";
    }
    if (formatStr == "JPG" || formatStr == "jpg" || formatStr == "JPEG" || formatStr == "jpeg")
    {
        format = "JPG";
        extension = ".jpg";
        transparency = false; // JPG doesn't support transparency, so we have to include the background
    }
    if (formatStr == "TIFF" || formatStr == "tiff" || formatStr == "TIF" || formatStr == "tif")
    {
        format = "TIFF";
        extension = ".tiff";
    }
    if (formatStr == "BMP" || formatStr == "bmp")
    {
        format = "BMP";
        extension = ".bmp";
        transparency = false;
    }
    if (formatStr == "WEBP" || formatStr == "webp") {
        format = "WEBP";
        extension = ".webp";
    }
    if (filePath.endsWith(extension, Qt::CaseInsensitive))
    {
        filePath.chop(extension.size());
    }
 
    qDebug() << "Exporting frames from "
        << frameStart << "to"
        << frameEnd
        << "at size " << exportSize;
 
    DebugDetails dd;
    dd << "\n[Export frames diagnostics]\n";
    bool ok = true;
 
    for (int currentFrame = frameStart; currentFrame <= frameEnd; currentFrame++)
    {
        if (progress != nullptr)
        {
            int totalFramesToExport = (frameEnd - frameStart) + 1;
            if (totalFramesToExport != 0) // Avoid dividing by zero.
            {
                progress->setValue((currentFrame - frameStart + 1) * progressMax / totalFramesToExport);
                QApplication::processEvents(); // Required to make progress bar update on-screen.
            }
 
            if (progress->wasCanceled())
            {
                break;
            }
        }
 
        QTransform view = cameraLayer->getViewAtFrame(currentFrame);
        QSize camSize = cameraLayer->getViewSize();
 
        QString frameNumberString = QString::number(currentFrame);
        while (frameNumberString.length() < 4)
        {
            frameNumberString.prepend("0");
        }
        QString sFileName = filePath + frameNumberString + extension;
        Layer* layer = findLayerByName(layerName);
        Status st = Status::SAFE;
        if (exportKeyframesOnly)
        {
            if (layer->keyExists(currentFrame))
            {
                st = exportIm(currentFrame, view, camSize, exportSize, sFileName, format, antialiasing, transparency);
            }
        }
        else
        {
            st = exportIm(currentFrame, view, camSize, exportSize, sFileName, format, antialiasing, transparency);
        }
 
        if (!st.ok())
        {
            ok = false;
            dd.collect(st.details());
        }
    }
 
    if (!ok)
    {
        dd << "\nError: Failed to export one or more frames";
        return Status(Status::FAIL, dd);
    }
 
    return Status::OK;
}
 
Status Object::exportIm(int frame, const QTransform& view, QSize cameraSize, QSize exportSize, const QString& filePath, const QString& format, bool antialiasing, bool transparency) const
{
    QImage imageToExport(exportSize, QImage::Format_ARGB32_Premultiplied);
 
    QColor bgColor = Qt::white;
    if (transparency)
        bgColor.setAlpha(0);
    imageToExport.fill(bgColor);
 
    QTransform centralizeCamera;
    centralizeCamera.translate(cameraSize.width() / 2, cameraSize.height() / 2);
 
    QPainter painter(&imageToExport);
    painter.setWorldTransform(view * centralizeCamera);
    painter.setWindow(QRect(0, 0, cameraSize.width(), cameraSize.height()));
 
    paintImage(painter, frame, false, antialiasing);
 
    QImageWriter writer(filePath, format.toStdString().c_str());
    bool b = writer.write(imageToExport);
    if (b) {
        return Status::OK;
    } else {
        DebugDetails dd;
        dd << "Object::exportIm";
        dd << QString("&nbsp;&nbsp;filePath: ").append(filePath);
        dd << QString("&nbsp;&nbsp;Error: %1 (code %2)").arg(writer.errorString()).arg(static_cast<int>(writer.error()));
        return Status(Status::FAIL, dd);
    }
}
 
int Object::getLayerCount() const
{
    return mLayers.size();
}
 
void Object::setData(const ObjectData& d)
{
    mData = d;
}
 
int Object::totalKeyFrameCount() const
{
    int sum = 0;
    for (const Layer* layer : mLayers)
    {
        sum += layer->keyFrameCount();
    }
    return sum;
}
 
void Object::updateActiveFrames(int frame) const
{
    const int beginFrame = std::max(frame - 3, 1);
    const int endFrame = frame + 4;
 
    const int minFrameCount = getLayerCount() * (endFrame - beginFrame);
    mActiveFramePool->setMinFrameCount(minFrameCount);
 
    for (Layer* layer : mLayers)
    {
        if (layer->visible())
        {
            for (int k = beginFrame; k < endFrame; ++k)
            {
                KeyFrame* key = layer->getKeyFrameAt(k);
                mActiveFramePool->put(key);
            }
        }
    }
}
 
void Object::setActiveFramePoolSize(int sizeInMB)
{
    // convert MB to Byte
    mActiveFramePool->resize(qint64(sizeInMB) * 1024 * 1024);
}