void UndoTransaction::flattenLayers(int bgcolor)
{
Image* cel_image;
Cel* cel;
int frame;
// create a temporary image
UniquePtr<Image> image_wrap(Image::create(m_sprite->getPixelFormat(),
m_sprite->getWidth(),
m_sprite->getHeight()));
Image* image = image_wrap.get();
/* get the background layer from the sprite */
LayerImage* background = m_sprite->getBackgroundLayer();
if (!background) {
/* if there aren't a background layer we must to create the background */
background = new LayerImage(m_sprite);
if (isEnabled())
m_undoHistory->pushUndoer(new undoers::AddLayer(m_undoHistory->getObjects(),
m_sprite->getFolder(), background));
m_sprite->getFolder()->add_layer(background);
if (isEnabled())
m_undoHistory->pushUndoer(new undoers::MoveLayer(m_undoHistory->getObjects(),
background));
background->configureAsBackground();
}
/* copy all frames to the background */
for (frame=0; frame<m_sprite->getTotalFrames(); frame++) {
/* clear the image and render this frame */
image_clear(image, bgcolor);
layer_render(m_sprite->getFolder(), image, 0, 0, frame);
cel = background->getCel(frame);
if (cel) {
cel_image = m_sprite->getStock()->getImage(cel->getImage());
ASSERT(cel_image != NULL);
/* we have to save the current state of `cel_image' in the undo */
if (isEnabled()) {
Dirty* dirty = new Dirty(cel_image, image);
dirty->saveImagePixels(cel_image);
m_undoHistory->pushUndoer(new undoers::DirtyArea(
m_undoHistory->getObjects(), cel_image, dirty));
delete dirty;
}
}
else {
/* if there aren't a cel in this frame in the background, we
have to create a copy of the image for the new cel */
cel_image = Image::createCopy(image);
/* TODO error handling: if (!cel_image) { ... } */
/* here we create the new cel (with the new image `cel_image') */
cel = new Cel(frame, m_sprite->getStock()->addImage(cel_image));
/* TODO error handling: if (!cel) { ... } */
/* and finally we add the cel in the background */
background->addCel(cel);
}
image_copy(cel_image, image, 0, 0);
}
/* select the background */
if (m_sprite->getCurrentLayer() != background) {
if (isEnabled())
m_undoHistory->pushUndoer(new undoers::SetCurrentLayer(
m_undoHistory->getObjects(), m_sprite));
m_sprite->setCurrentLayer(background);
}
// Remove old layers.
LayerList layers = m_sprite->getFolder()->get_layers_list();
LayerIterator it = layers.begin();
LayerIterator end = layers.end();
for (; it != end; ++it) {
if (*it != background) {
Layer* old_layer = *it;
// Remove the layer
if (isEnabled())
m_undoHistory->pushUndoer(new undoers::RemoveLayer(m_undoHistory->getObjects(),
old_layer));
m_sprite->getFolder()->remove_layer(old_layer);
// Destroy the layer
delete old_layer;
}
}
}
void DocumentApi::flattenLayers(Sprite* sprite, int bgcolor)
{
Image* cel_image;
Cel* cel;
DocumentUndo* undo = m_document->getUndo();
// Create a temporary image.
UniquePtr<Image> image_wrap(Image::create(sprite->getPixelFormat(),
sprite->getWidth(),
sprite->getHeight()));
Image* image = image_wrap.get();
// Get the background layer from the sprite.
LayerImage* background = sprite->getBackgroundLayer();
if (!background) {
// If there aren't a background layer we must to create the background.
background = new LayerImage(sprite);
addLayer(sprite->getFolder(), background, NULL);
configureLayerAsBackground(background);
}
// Copy all frames to the background.
for (FrameNumber frame(0); frame<sprite->getTotalFrames(); ++frame) {
// Clear the image and render this frame.
image_clear(image, bgcolor);
layer_render(sprite->getFolder(), image, 0, 0, frame);
cel = background->getCel(frame);
if (cel) {
cel_image = sprite->getStock()->getImage(cel->getImage());
ASSERT(cel_image != NULL);
// We have to save the current state of `cel_image' in the undo.
if (undo->isEnabled()) {
Dirty* dirty = new Dirty(cel_image, image);
dirty->saveImagePixels(cel_image);
m_undoers->pushUndoer(new undoers::DirtyArea(
getObjects(), cel_image, dirty));
delete dirty;
}
}
else {
// If there aren't a cel in this frame in the background, we
// have to create a copy of the image for the new cel.
cel_image = Image::createCopy(image);
// TODO error handling: if createCopy throws
// Here we create the new cel (with the new image `cel_image').
cel = new Cel(frame, sprite->getStock()->addImage(cel_image));
// TODO error handling: if new Cel throws
// And finally we add the cel in the background.
background->addCel(cel);
}
image_copy(cel_image, image, 0, 0);
}
// Delete old layers.
LayerList layers = sprite->getFolder()->getLayersList();
LayerIterator it = layers.begin();
LayerIterator end = layers.end();
for (; it != end; ++it)
if (*it != background)
removeLayer(*it);
}