#include "LinearLayout.hh"

LinearLayout::LinearLayout(int direction, int width, int height, std::string name)
  : View(width, height, std::move(name)), direction_(direction)
{
}

LinearLayout::~LinearLayout()
{
}

void LinearLayout::setChildPadding(int pad)
{
  if (pad != padChildren_) {
    padChildren_ = pad;

    layout();
  }
}

void LinearLayout::layout()
{
  // TODO: Respect parent padding
  if ((width_ == MATCH_PARENT) && parent_)
    realWidth_ = parent_->getRealWidth();

  if ((height_ == MATCH_PARENT) && parent_)
    realHeight_ = parent_->getRealHeight();

  if (direction_ == DIR_VERTICAL) {
    int contentWidth = 0;

    if (width_ == WRAP_CONTENT) {
      // Determine content width
      for(auto& ent : children_) {
	auto& child = *(std::get<1>(ent));
	assert(child.getHeight() != MATCH_PARENT);
	if (child.getWidth() == MATCH_PARENT)
	  continue;
	if (child.getWidth() == WRAP_CONTENT)
	  _layout(child);
	contentWidth = std::max(contentWidth, child.getRealWidth());
      }
      assert(contentWidth > 0);
      realWidth_ = contentWidth + padLeft_ + padRight_;
      printf("Inner width: %d, outer width: %d\n", contentWidth, realWidth_);
    }

    int currentY = padTop_;
    
    // Layout children
    for(auto& ent : children_) {
      auto& child = *(std::get<1>(ent));
      if (child.getWidth() == MATCH_PARENT)
	_layout(child);

      SDL_Rect cr;
      cr.x = padLeft_;
      cr.y = currentY;
      if ((realWidth_ - padLeft_ - padRight_) > child.getRealWidth())
	cr.w = child.getRealWidth();
      else
	cr.w = realWidth_ - padLeft_ - padRight_;
      cr.h = child.getRealHeight();
      
      std::get<2>(ent) = cr;
      
      currentY += child.getRealHeight() + padChildren_;
    }

    if (height_ == WRAP_CONTENT)
      realHeight_ = currentY - padChildren_ + padBottom_;
  }
  
  invalidateGL();
}