/***

  Olive - Non-Linear Video Editor
  Copyright (C) 2022 Olive Team
  Modifications Copyright (C) 2025 mikesolar

  This program is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.

  This program 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 General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program.  If not, see <http://www.gnu.org/licenses/>.

***/

#include "point.h"

#include <QApplication>

namespace olive
{

PointGizmo::PointGizmo(const Shape &shape, bool smaller, QObject *parent)
	: DraggableGizmo{ parent }
	, shape_(shape)
	, smaller_(smaller)
{
}

PointGizmo::PointGizmo(const Shape &shape, QObject *parent)
	: PointGizmo(shape, false, parent)
{
}

PointGizmo::PointGizmo(QObject *parent)
	: PointGizmo(k_square, parent)
{
}

void PointGizmo::draw(QPainter *p) const
{
	QRectF rect = get_drawing_rect(p->transform(), get_standard_radius());

	if (shape_ != k_anchor_point) {
		p->setPen(QPen(Qt::black, 0));
		p->setBrush(Qt::white);
	}

	switch (shape_) {
	case k_square:
		p->drawRect(rect);
		break;
	case k_circle:
		p->drawEllipse(rect);
		break;
	case k_anchor_point:
		p->setPen(QPen(Qt::white, 0));
		p->setBrush(Qt::NoBrush);

		p->drawEllipse(rect);
		p->drawLines({ QPointF(rect.left(), rect.center().y()),
					   QPointF(rect.right(), rect.center().y()),
					   QPointF(rect.center().x(), rect.top()),
					   QPointF(rect.center().x(), rect.bottom()) });
		break;
	}
}

QRectF PointGizmo::get_clicking_rect(const QTransform &t) const
{
	return get_drawing_rect(t, get_standard_radius());
}

double PointGizmo::get_standard_radius()
{
	return QFontMetrics(qApp->font()).height() * 0.25;
}

QRectF PointGizmo::get_drawing_rect(const QTransform &transform,
								  double radius) const
{
	QRectF r(0, 0, radius, radius);

	r = transform.inverted().mapRect(r);

	double width = r.width();
	double height = r.height();

	if (shape_ == k_anchor_point) {
		width *= 2;
		height *= 2;
	}

	if (smaller_) {
		width *= 0.5;
		height *= 0.5;
	}

	return QRectF(point_.x() - width, point_.y() - height, 2 * width,
				  2 * height);
}

}