#include "ElaBreadcrumbBarDelegate.h"

#include <QPainter>

#include "ElaTheme.h"
ElaBreadcrumbBarDelegate::ElaBreadcrumbBarDelegate(QObject *parent) : QStyledItemDelegate{parent} {
    _themeMode = eTheme->getThemeMode();
    connect(eTheme, &ElaTheme::themeModeChanged, this, [=](ElaThemeType::ThemeMode themeMode) { _themeMode = themeMode; });
}

ElaBreadcrumbBarDelegate::~ElaBreadcrumbBarDelegate() {}

void ElaBreadcrumbBarDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const {
    painter->save();
    painter->setRenderHints(QPainter::Antialiasing | QPainter::TextAntialiasing);
    painter->setPen(ElaThemeColor(_themeMode, BasicText));
    QRect   itemRect              = option.rect;
    QString breadcrumbDisplayData = index.data(Qt::DisplayRole).toString();
    QString breadcrumbUserData    = index.data(Qt::UserRole).toString();
    if (breadcrumbUserData != "LastBreadcrumb") {
        if (_pPressIndex == index) {
            // 鼠标按下
            painter->setPen(ElaThemeColor(_themeMode, BasicTextPress));
        } else {
            // 不为最后一个 且没有被鼠标覆盖
            if (!(option.state & QStyle::State_MouseOver)) {
                painter->setPen(ElaThemeColor(_themeMode, BasicTextNoFocus));
            }
        }
    }
    if (breadcrumbDisplayData != ">") {
        painter->drawText(itemRect, Qt::AlignVCenter | Qt::AlignLeft, breadcrumbDisplayData);
    } else {
        // 分隔符
        QFont iconFont = QFont("ElaAwesome");
        iconFont.setPixelSize(painter->font().pixelSize() * 0.785);
        painter->setFont(iconFont);
        itemRect.setX(itemRect.x() - itemRect.width() * 0.36);
        painter->drawText(itemRect, Qt::AlignCenter, QChar((unsigned short)ElaIconType::AngleRight));
    }
    painter->restore();
}