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#include "render_object.hpp"
#include <utility>
namespace cru::ui::render
{
void RenderObject::SetRenderHost(IRenderHost* new_render_host)
{
if (new_render_host == render_host_) return;
const auto old = render_host_;
render_host_ = new_render_host;
OnRenderHostChanged(old, new_render_host);
}
void RenderObject::AddChild(RenderObject* render_object, const int position)
{
if (render_object->GetParent() != nullptr)
throw std::invalid_argument("Render object already has a parent.");
if (position < 0)
throw std::invalid_argument("Position index is less than 0.");
if (static_cast<std::vector<RenderObject*>::size_type>(position) >
children_.size())
throw std::invalid_argument("Position index is out of bound.");
children_.insert(children_.cbegin() + position, render_object);
render_object->SetParent(this);
OnAddChild(render_object, position);
}
void RenderObject::RemoveChild(const int position)
{
if (position < 0)
throw std::invalid_argument("Position index is less than 0.");
if (static_cast<std::vector<RenderObject*>::size_type>(position) >=
children_.size())
throw std::invalid_argument("Position index is out of bound.");
const auto i = children_.cbegin() + position;
const auto removed_child = *i;
children_.erase(i);
removed_child->SetParent(nullptr);
OnRemoveChild(removed_child, position);
}
void RenderObject::OnRenderHostChanged(IRenderHost* old_render_host,
IRenderHost* new_render_host)
{
}
void RenderObject::InvalidateRenderHostPaint() const
{
if (render_host_ != nullptr) render_host_->InvalidatePaint();
}
void RenderObject::InvalidateRenderHostLayout() const
{
if (render_host_ != nullptr) render_host_->InvalidateLayout();
}
void RenderObject::OnParentChanged(RenderObject* old_parent,
RenderObject* new_parent)
{
}
void RenderObject::OnAddChild(RenderObject* new_child, int position)
{
}
void RenderObject::OnRemoveChild(RenderObject* removed_child, int position)
{
}
void RenderObject::SetParent(RenderObject* new_parent)
{
const auto old_parent = parent_;
parent_ = new_parent;
OnParentChanged(old_parent, new_parent);
}
void LinearLayoutRenderObject::Measure(const MeasureConstraint& constraint)
{
}
} // namespace cru::ui::render
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