Method moveFrame

src/app/document_api.cpp:214–243

}

void DocumentApi::moveFrame(Sprite* sprite, frame_t frame, frame_t beforeFrame)
{
  if (frame != beforeFrame &&
      frame >= 0 &&
      frame <= sprite->lastFrame() &&
      beforeFrame >= 0 &&
      beforeFrame <= sprite->lastFrame()+1) {
    // Change the frame-lengths.
    int frlen_aux = sprite->frameDuration(frame);

    // Moving the frame to the future.
    if (frame < beforeFrame) {
      for (frame_t c=frame; c<beforeFrame-1; ++c)
        setFrameDuration(sprite, c, sprite->frameDuration(c+1));
      setFrameDuration(sprite, beforeFrame-1, frlen_aux);
    }
    // Moving the frame to the past.
    else if (beforeFrame < frame) {
      for (frame_t c=frame; c>beforeFrame; --c)
        setFrameDuration(sprite, c, sprite->frameDuration(c-1));
      setFrameDuration(sprite, beforeFrame, frlen_aux);
    }

    adjustFrameTags(sprite, frame, -1, true);
    adjustFrameTags(sprite, beforeFrame, +1, true);

    // Change cel positions.
    moveFrameLayer(sprite->folder(), frame, beforeFrame);
  }
}

void DocumentApi::moveFrameLayer(Layer* layer, frame_t frame, frame_t beforeFrame)
{