#include "sui.h"
sui::sui(QDialog *parent)
    : QDialog(parent),
      m_widget(new QDialog),
      m_layout(new QVBoxLayout),
      m_press(false),
      m_border_width(5)
{

    init_layout();
}
sui::~sui()
{
    
}
void sui::init_layout()
{
    m_title=new sui_title(this);
    m_title->set_title(tr("XSteam"));
    setObjectName(tr("m_widget"));
    m_layout->addWidget(m_title);
    m_title->setMouseTracking(true);
    m_layout->setContentsMargins(5, 5, 5, 5);
    m_layout->setSpacing(0);
    setWindowFlags(Qt::FramelessWindowHint);
    setAttribute(Qt::WA_TranslucentBackground);
    setMouseTracking(true);
    setBaseSize(800, 600);
    resize(800, 600);
    setLayout(m_layout);
    connect(m_title, SIGNAL(signals_close()), this, SLOT(slots_close()));
}
void sui::slots_close(){
    this->close();
}
void sui::showEvent(QShowEvent *event)
{
    this->setAttribute(Qt::WA_Mapped);
    QWidget::showEvent(event);
}

void sui::paintEvent(QPaintEvent *event)
{
    QStyleOption opt;
    opt.initFrom(this);
    QPainter painter(this);
    style()->drawPrimitive(QStyle::PE_Widget, &opt, &painter, this);
    painter.setRenderHint(QPainter::Antialiasing);
    painter.drawRoundedRect(this->rect(), 10, 10);
    QWidget::paintEvent(event);
}

void sui::mousePressEvent(QMouseEvent *event)
{
    if ((event->button() == Qt::LeftButton))
    {
        m_press = true;
        m_point = (event->globalPosition() - this->pos()).toPoint();
        event->accept();
    }
}

void sui::mouseMoveEvent(QMouseEvent *event)
{
    if (m_press)
    {
        move(event->globalPosition().toPoint() - m_point);
        event->accept();
    }
}

void sui::mouseReleaseEvent(QMouseEvent *event)
{
    Q_UNUSED(event)
    m_press = false;
}

bool sui::nativeEvent(const QByteArray &eventType, void *message, qintptr *result)
{
    //Q_UNUSED(eventType)

    MSG *param = static_cast<MSG *>(message);

    switch (param->message)
    {
    case WM_NCHITTEST:
    {
        int nX = GET_X_LPARAM(param->lParam) - this->geometry().x();
        int nY = GET_Y_LPARAM(param->lParam) - this->geometry().y();

        // 如果鼠标位于子控件上，则不进行处理
        if (childAt(nX, nY) != nullptr)
            return QWidget::nativeEvent(eventType, message, result);

        *result = HTCAPTION;

        // 鼠标区域位于窗体边框，进行缩放
        if ((nX > 0) && (nX < m_border_width))
            *result = HTLEFT;

        if ((nX > this->width() - m_border_width) && (nX < this->width()))
            *result = HTRIGHT;

        if ((nY > 0) && (nY < m_border_width))
            *result = HTTOP;

        if ((nY > this->height() - m_border_width) && (nY < this->height()))
            *result = HTBOTTOM;

        if ((nX > 0) && (nX < m_border_width) && (nY > 0) && (nY < m_border_width))
            *result = HTTOPLEFT;

        if ((nX > this->width() - m_border_width) && (nX < this->width()) && (nY > 0) && (nY < m_border_width))
            *result = HTTOPRIGHT;

        if ((nX > 0) && (nX < m_border_width) && (nY > this->height() - m_border_width) && (nY < this->height()))
            *result = HTBOTTOMLEFT;

        if ((nX > this->width() - m_border_width) && (nX < this->width()) && (nY > this->height() - m_border_width) && (nY < this->height()))
            *result = HTBOTTOMRIGHT;

        return true;
    }
    }

    return QWidget::nativeEvent(eventType, message, result);
}