/* 
 * Copyright (C) 2025 Petr Mironychev
 *
 * This file is part of QodeAssist.
 *
 * QodeAssist 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.
 *
 * QodeAssist 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 QodeAssist. If not, see <https://www.gnu.org/licenses/>.
 */

#include "CompletionHintWidget.hpp"

#include <QPainter>

#include <utils/theme/theme.h>

namespace QodeAssist {

CompletionHintWidget::CompletionHintWidget(QWidget *parent, int fontSize)
    : QWidget(parent)
    , m_isHovered(false)
{
    m_accentColor = Utils::creatorTheme()->color(Utils::Theme::TextColorNormal);

    setMouseTracking(true);
    setFocusPolicy(Qt::NoFocus);
    setAttribute(Qt::WA_TranslucentBackground);
    
    int triangleSize = qMax(6, fontSize / 2);
    setFixedSize(triangleSize, triangleSize);
}

void CompletionHintWidget::paintEvent(QPaintEvent *event)
{
    Q_UNUSED(event);
    
    QPainter painter(this);
    painter.setRenderHint(QPainter::Antialiasing);

    QColor triangleColor = m_accentColor;
    triangleColor.setAlpha(m_isHovered ? 255 : 200);
    
    painter.setPen(Qt::NoPen);
    painter.setBrush(triangleColor);
    
    QPolygonF triangle;
    int w = width();
    int h = height();
    
    triangle << QPointF(0, 0)
             << QPointF(0, h)
             << QPointF(w, h / 2.0);
    
    painter.drawPolygon(triangle);
}

void CompletionHintWidget::enterEvent(QEnterEvent *event)
{
    Q_UNUSED(event);
    m_isHovered = true;
    setCursor(Qt::PointingHandCursor);
    update();
}

void CompletionHintWidget::leaveEvent(QEvent *event)
{
    Q_UNUSED(event);
    m_isHovered = false;
    setCursor(Qt::ArrowCursor);
    update();
}

} // namespace QodeAssist