// SPDX-License-Identifier: MIT

#include "previewplacement.h"

#include <plasma/plasma.h>
#include <algorithm>

QPoint previewPosition(const QRect &button, const QRect &screen, const QSize &preview, int panelLocation)
{
    const QRect anchor = button.isValid() ? button : screen;
    const int centerX = anchor.x() + (anchor.width() - preview.width()) / 2;
    const int centerY = anchor.y() + (anchor.height() - preview.height()) / 2;
    QPoint result;
    switch (panelLocation) {
    case Plasma::Types::TopEdge:
        result = {centerX, button.isValid() ? button.bottom() + 1 : screen.top()};
        break;
    case Plasma::Types::LeftEdge:
        result = {button.isValid() ? button.right() + 1 : screen.left(), centerY};
        break;
    case Plasma::Types::RightEdge:
        result = {button.isValid() ? button.left() - preview.width() : screen.right() + 1 - preview.width(), centerY};
        break;
    default:
        result = {centerX, button.isValid() ? button.top() - preview.height() : screen.bottom() + 1 - preview.height()};
        break;
    }
    result.setX(std::clamp(result.x(), screen.left(), std::max(screen.left(), screen.right() + 1 - preview.width())));
    result.setY(std::clamp(result.y(), screen.top(), std::max(screen.top(), screen.bottom() + 1 - preview.height())));
    return result;
}