/*
Crafter®.Graphics
Copyright (C) 2026 Catcrafts®
Catcrafts.net

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 3.0 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
*/

module Crafter.Graphics:Transform2D_impl;
import :Transform2D;
import :Rendertarget;
import :Types;
import :Font;
import std;

using namespace Crafter;


Anchor2D::Anchor2D(float x, float y, float width, float height, float offsetX, float offsetY, std::int32_t z, bool maintainAspectRatio): x(x), y(y), width(width), height(height), offsetX(offsetX), offsetY(offsetY), z(z), maintainAspectRatio(maintainAspectRatio) {

}

Transform2D::Transform2D(Anchor2D anchor) : anchor(anchor) {

}

void Transform2D::UpdatePosition(Rendertarget& window) {
    ScaleElement(window.transform);
    for(Transform2D* child : children) {
		child->UpdatePosition(window, *this);
	}
}

void Transform2D::UpdatePosition(Rendertarget& window, Transform2D& parent) {
    ScaleElement(parent);
    for(Transform2D* child : children) {
		child->UpdatePosition(window, *this);
	}
}

void Transform2D::ScaleElement(Transform2D& parent) {
    if(anchor.maintainAspectRatio) {
        if(parent.scaled.size.x > parent.scaled.size.y) {
            scaled.size.x = anchor.width * parent.scaled.size.y;
            scaled.size.y = anchor.height * parent.scaled.size.y;
        } else {
            scaled.size.x = anchor.width * parent.scaled.size.x;
            scaled.size.y = anchor.height * parent.scaled.size.x;
        }
    } else {
        
        scaled.size.x = anchor.width * parent.scaled.size.x;
	    scaled.size.y = anchor.height * parent.scaled.size.y;
    }

	scaled.position.x = parent.scaled.position.x + (anchor.x * parent.scaled.size.x - anchor.offsetX *  scaled.size.x);
	scaled.position.y = parent.scaled.position.y + (anchor.y * parent.scaled.size.y - anchor.offsetY *  scaled.size.y);
}