void UndoTransaction::removeFrameOfLayer(Layer* layer, int frame)
{
ASSERT(layer);
ASSERT(frame >= 0);
switch (layer->getType()) {
case GFXOBJ_LAYER_IMAGE:
if (Cel* cel = static_cast<LayerImage*>(layer)->getCel(frame))
removeCel(static_cast<LayerImage*>(layer), cel);
for (++frame; frame<m_sprite->getTotalFrames(); ++frame)
if (Cel* cel = static_cast<LayerImage*>(layer)->getCel(frame))
setCelFramePosition(cel, cel->getFrame()-1);
break;
case GFXOBJ_LAYER_FOLDER: {
LayerIterator it = static_cast<LayerFolder*>(layer)->get_layer_begin();
LayerIterator end = static_cast<LayerFolder*>(layer)->get_layer_end();
for (; it != end; ++it)
removeFrameOfLayer(*it, frame);
break;
}
}
}
// Does the hard part of removing a frame: Removes all cels located in
// the given frame, and moves all following cels one frame position back.
void DocumentApi::removeFrameOfLayer(Layer* layer, FrameNumber frame)
{
ASSERT(layer);
ASSERT(frame >= 0);
Sprite* sprite = layer->getSprite();
switch (layer->getType()) {
case GFXOBJ_LAYER_IMAGE:
if (Cel* cel = static_cast<LayerImage*>(layer)->getCel(frame))
removeCel(static_cast<LayerImage*>(layer), cel);
for (++frame; frame<sprite->getTotalFrames(); ++frame)
if (Cel* cel = static_cast<LayerImage*>(layer)->getCel(frame))
setCelFramePosition(sprite, cel, cel->getFrame().previous());
break;
case GFXOBJ_LAYER_FOLDER: {
LayerIterator it = static_cast<LayerFolder*>(layer)->getLayerBegin();
LayerIterator end = static_cast<LayerFolder*>(layer)->getLayerEnd();
for (; it != end; ++it)
removeFrameOfLayer(*it, frame);
break;
}
}
}
void LayerImage::moveCel(Cel* cel, FrameNumber frame)
{
removeCel(cel);
cel->setFrame(frame);
addCel(cel);
}
// clears the mask region in the current sprite with the specified background color
void UndoTransaction::clearMask(int bgcolor)
{
Cel* cel = getCurrentCel();
if (!cel)
return;
Image* image = getCelImage(cel);
if (!image)
return;
Mask* mask = m_document->getMask();
// If the mask is empty or is not visible then we have to clear the
// entire image in the cel.
if (!m_document->isMaskVisible()) {
// If the layer is the background then we clear the image.
if (m_sprite->getCurrentLayer()->is_background()) {
if (isEnabled())
m_undoHistory->pushUndoer(new undoers::ImageArea(m_undoHistory->getObjects(),
image, 0, 0, image->w, image->h));
// clear all
image_clear(image, bgcolor);
}
// If the layer is transparent we can remove the cel (and its
// associated image).
else {
removeCel(static_cast<LayerImage*>(m_sprite->getCurrentLayer()), cel);
}
}
else {
int offset_x = mask->getBounds().x-cel->getX();
int offset_y = mask->getBounds().y-cel->getY();
int u, v, putx, puty;
int x1 = MAX(0, offset_x);
int y1 = MAX(0, offset_y);
int x2 = MIN(image->w-1, offset_x+mask->getBounds().w-1);
int y2 = MIN(image->h-1, offset_y+mask->getBounds().h-1);
// do nothing
if (x1 > x2 || y1 > y2)
return;
if (isEnabled())
m_undoHistory->pushUndoer(new undoers::ImageArea(m_undoHistory->getObjects(),
image, x1, y1, x2-x1+1, y2-y1+1));
// clear the masked zones
for (v=0; v<mask->getBounds().h; v++) {
div_t d = div(0, 8);
uint8_t* address = ((uint8_t**)mask->getBitmap()->line)[v]+d.quot;
for (u=0; u<mask->getBounds().w; u++) {
if ((*address & (1<<d.rem))) {
putx = u + offset_x;
puty = v + offset_y;
image_putpixel(image, putx, puty, bgcolor);
}
_image_bitmap_next_bit(d, address);
}
}
}
}