void Editor::backup(int backupLayer, int backupFrame, QString undoText)
{
while (mBackupList.size() - 1 > mBackupIndex && mBackupList.size() > 0)
{
delete mBackupList.takeLast();
}
while (mBackupList.size() > 19) // we authorize only 20 levels of cancellation
{
delete mBackupList.takeFirst();
mBackupIndex--;
}
Layer* layer = mObject->getLayer(backupLayer);
if (layer != nullptr)
{
if (layer->type() == Layer::BITMAP)
{
BitmapImage* bitmapImage = static_cast<LayerBitmap*>(layer)->getLastBitmapImageAtFrame(backupFrame, 0);
if (currentFrame() == 1) {
int previous = layer->getPreviousKeyFramePosition(backupFrame);
bitmapImage = static_cast<LayerBitmap*>(layer)->getBitmapImageAtFrame(previous);
}
if (bitmapImage != nullptr)
{
BackupBitmapElement* element = new BackupBitmapElement(bitmapImage);
element->layer = backupLayer;
element->frame = backupFrame;
element->undoText = undoText;
element->somethingSelected = getScribbleArea()->isSomethingSelected();
element->mySelection = getScribbleArea()->mySelection;
element->myTransformedSelection = getScribbleArea()->myTransformedSelection;
element->myTempTransformedSelection = getScribbleArea()->myTempTransformedSelection;
mBackupList.append(element);
mBackupIndex++;
}
}
else if (layer->type() == Layer::VECTOR)
{
VectorImage* vectorImage = static_cast<LayerVector*>(layer)->getLastVectorImageAtFrame(backupFrame, 0);
if (vectorImage != nullptr)
{
BackupVectorElement* element = new BackupVectorElement(vectorImage);
element->layer = backupLayer;
element->frame = backupFrame;
element->undoText = undoText;
element->somethingSelected = getScribbleArea()->isSomethingSelected();
element->mySelection = getScribbleArea()->mySelection;
element->myTransformedSelection = getScribbleArea()->myTransformedSelection;
element->myTempTransformedSelection = getScribbleArea()->myTempTransformedSelection;
mBackupList.append(element);
mBackupIndex++;
}
}
else if (layer->type() == Layer::SOUND)
{
int previous = layer->getPreviousKeyFramePosition(backupFrame);
KeyFrame* key = layer->getLastKeyFrameAtPosition(backupFrame);
// in case tracks overlap, get previous frame
if (key == nullptr)
{
KeyFrame* previousKey = layer->getKeyFrameAt(previous);
key = previousKey;
}
if (key != nullptr) {
SoundClip* clip = static_cast<SoundClip*>(key);
if (clip)
{
BackupSoundElement* element = new BackupSoundElement(clip);
element->layer = backupLayer;
element->frame = backupFrame;
element->undoText = undoText;
element->fileName = clip->fileName();
mBackupList.append(element);
mBackupIndex++;
}
}
}
}
updateAutoSaveCounter();
emit updateBackup();
}
