#include "DialogBase.h"

#include <QMouseEvent>
#include <QVBoxLayout>
#include <QLabel>
#include <QPushButton>
#include <QBoxLayout>
#include <qboxlayout.h>
#include <qpushbutton.h>


DialogBase::DialogBase(QWidget *parent)
    : QDialog(parent)
{

}
DialogBase::~DialogBase()
{

}

/* 设置标题 */
void DialogBase::setTitle(const QString &title, QSize size)
{

}

/* 获取标题 */
QString DialogBase::getTitle() const
{
    return m_labelTitle ? m_labelTitle->text() : QString();
}

/* 初始化UI */
void DialogBase::initUI()
{
    /*--------------------- 初始化背景容器 -----------------------*/
    m_widgetBackground = new QWidget(this);
    m_widgetBackground->setObjectName("widget_background");
    QVBoxLayout* layout = new QVBoxLayout(this);
    /* 设置边距，就是阴影的宽度 */
    layout->setContentsMargins(20, 20, 20, 20);
    layout->setSpacing(0);
    this->setLayout(layout);
    layout->addWidget(m_widgetBackground);

    /* 创建背景容器内部的布局 */
    m_layoutBackground = new QVBoxLayout(m_widgetBackground);
    m_layoutBackground->setContentsMargins(0, 0, 0, 0);
    m_layoutBackground->setSpacing(0);
    m_widgetBackground->setLayout(m_layoutBackground);

    /*--------------------- 初始顶栏 -----------------------*/
    /* 初始化顶部标题栏，高度56，下面分割线高度1 */
    m_widgetTop = new QWidget(this);
    m_widgetTop->setObjectName("widget_top");
    m_widgetTop->setFixedHeight(56);
    m_layoutBackground->addWidget(m_widgetTop);
    QHBoxLayout* topHBoxLayout = new QHBoxLayout(m_widgetTop);
    m_widgetTop->setLayout(topHBoxLayout);

    /* 初始化标题栏 */
    m_labelTitle = new QLabel(m_widgetTop);
    m_labelTitle->setObjectName("label_title");
    m_labelTitle->setText("Dialog Title");
    m_labelTitle->setFixedSize(120, 18);
    m_labelTitle->setAlignment(Qt::AlignLeft | Qt::AlignVCenter);
    /* 初始化关闭按钮 */
    m_pBtn_Close = new QPushButton(m_widgetTop);
    m_pBtn_Close->setObjectName("pBtn_Close");
    m_pBtn_Close->resize(32, 32);
    /* 重新布局顶栏 */
    layoutTop();
}

/* 设置top栏的位置布局，标题和关闭按钮的高度起始位置不一样，不方便使用布局，所有手动修改坐标
 * 标题位置32，18，高度18
 * 关闭按钮右对齐16，y12，大小32x32 */
void DialogBase::layoutTop()
{
    m_labelTitle->move(32, 18);
    int x = m_widgetTop->width() - m_pBtn_Close->width() - 16;
    m_pBtn_Close->move(x, 12);
}

/* 重写鼠标按下事件 */
void DialogBase::mousePressEvent(QMouseEvent *event)
{
    m_lastPos = event->globalPos();
    event->accept();
}

/* 重写鼠标移动事件 */
void DialogBase::mouseMoveEvent(QMouseEvent *event)
{
    auto point = m_widgetTop->mapToGlobal(QPoint(0, 0));
    QRect rect(point, m_widgetTop->size());

    if(!rect.contains(m_lastPos))
    {
        event->accept();
        return;
    }

    int dx = event->globalX() - m_lastPos.x();
    int dy = event->globalY() - m_lastPos.y();
    m_widgetBackground->move(m_widgetBackground->x() + dx, m_widgetBackground->y() + dy);
    m_lastPos = event->globalPos();
    event->accept();
}

/* 重写鼠标释放事件 */
void DialogBase::mouseReleaseEvent(QMouseEvent *event)
{
    event->accept();
}