#include "ResourceDelegate.h"
#include <QApplication>
#include <QMouseEvent>
#include <QPainter>
#include <QPen>
#include <QtDebug>
#include "dpi_util_win.h"

ResourceDelegate::ResourceDelegate(QAbstractItemView *parent)
    : QStyledItemDelegate(parent)
    , parent_(qobject_cast<QAbstractItemView*>(parent))
    , updating(false)
{
    scaleX = WinDpi::windowsDpiScaleX();
    scaleY = WinDpi::windowsDpiScaleY();

    // 当更改DPI的时候，更新最新的DPI
#ifdef Q_OS_WIN
    connect(QApplication::primaryScreen(), &QScreen::logicalDotsPerInchChanged,
            this, [this](){
        scaleX = WinDpi::windowsDpiScaleX();
        scaleY = WinDpi::windowsDpiScaleY();
    });
#endif
}

void ResourceDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
{
    QStyleOptionViewItem viewOption(option);
    initStyleOption(&viewOption, index);

    QPen pen;
    pen.setColor(QColor("#50AFDB"));
    pen.setWidth(1);
    painter->setPen(pen);

    QRect rectViewItem = viewOption.rect;
    QRect rect = QRect(rectViewItem.x() + (viewOption.rect.width() - selectWidth) / 2,
                       rectViewItem.y() + (viewOption.rect.height() - selectHeight) / 2,
                       selectWidth * WinDpi::windowsDpiScaleX(),selectHeight * WinDpi::windowsDpiScaleY());

    painter->drawRoundedRect(rect, 2, 2); // round rect
    painter->save();
    painter->setRenderHint(QPainter::Antialiasing);

    bool data = index.model()->data(index, Qt::UserRole).toBool();
    qInfo() << __FUNCTION__ << data << index.row() << index.column();
    if(data)
    {
        QPainterPath path;
        path.moveTo(rect.x() + rect.width() * 1 / 3 , rect.y() + rect.height()* 1 /  4);
        path.lineTo(rect.x() + rect.width() * 1 / 2 , rect.y() + rect.width()*  3 / 5);
        path.lineTo(rect.x() + rect.width()  + rect.width() * 1 / 4 ,rect.y());
        path.lineTo(rect.x() + rect.width()  * 1 / 2 , rect.y() + rect.height()  * 13 / 15);
        path.lineTo(rect.x() + rect.width()  * 1 / 6 , rect.y() + rect.height()  * 1 / 2);
        path.lineTo(rect.x() + rect.width()  * 1 / 3 , rect.y() + rect.height()  * 1 /  4);
        painter->fillPath(path, QColor("#40B400"));
    }
    painter->restore();
}

bool ResourceDelegate::editorEvent(QEvent *event, QAbstractItemModel *model, const QStyleOptionViewItem &option, const QModelIndex &index)
{
    QRect decorationRect = option.rect;

    if (index.column() == HeaderList::UserRole_Checkbox_Select)
    {
        QMouseEvent *mouseEvent = static_cast<QMouseEvent *>(event);
        if(event->type() == QEvent::MouseButtonDblClick)
        {
            if(!updating)
            {
                bool data = model->data(index, Qt::UserRole).toBool();
                model->setData(index, !data, Qt::UserRole);
            }
        }
        else if (event->type() == QEvent::MouseButtonPress && decorationRect.contains(mouseEvent->pos()))
        {
            if(!updating)
            {
                bool data = model->data(index, Qt::UserRole).toBool();
                model->setData(index, !data, Qt::UserRole);
            }
        }
    }
    return QStyledItemDelegate::editorEvent(event, model, option, index);
}

void ResourceDelegate::setUpdating(bool value)
{
    updating = value;
}