/*
 * @file 	show.cpp
 * @date 	2018/01/22 23:07
 *
 * @author 	itisyang
 * @Contact	[email protected]
 *
 * @brief 	显示控件
 * @note
 */


#include <QDebug>
#include <QMutex>
#include "show.h"
#include "ui_show.h"
#include "globalhelper.h"

#pragma execution_character_set("utf-8")

QMutex g_show_rect_mutex;

Show::Show(QWidget* parent) :
	QWidget(parent),
	ui(new Ui::Show),
	m_stMenu(this),
	m_stActionGroup(this)
{
	ui->setupUi(this);

	//加载样式
	setStyleSheet(GlobalHelper::GetQssStr("://res/qss/show.css"));
	setAcceptDrops(true);


	//防止过度刷新显示
	this->setAttribute(Qt::WA_OpaquePaintEvent);
	//ui->label->setAttribute(Qt::WA_OpaquePaintEvent);

	ui->label->setUpdatesEnabled(false);

	this->setMouseTracking(true);



	m_nLastFrameWidth = 0; // 记录视频宽高
	m_nLastFrameHeight = 0;

	m_stActionGroup.addAction("全屏");
	m_stActionGroup.addAction("暂停");
	m_stActionGroup.addAction("停止");

	m_stMenu.addActions(m_stActionGroup.actions());


}

Show::~Show()
{
	delete ui;
}

bool Show::Init()
{
	if (ConnectSignalSlots() == false)
	{
		return false;
	}

	//ui->label->setUpdatesEnabled(false);
	return true;
}

void Show::OnFrameDimensionsChanged(int nFrameWidth, int nFrameHeight)
{
	qDebug() << "Show::OnFrameDimensionsChanged" << nFrameWidth << nFrameHeight;
	m_nLastFrameWidth = nFrameWidth;
	m_nLastFrameHeight = nFrameHeight;

	ChangeShow();
}

void Show::ChangeShow()
{
	g_show_rect_mutex.lock();

	if (m_nLastFrameWidth == 0 && m_nLastFrameHeight == 0)
	{
		ui->label->setGeometry(0, 0, width(), height());
	}
	else
	{
		float aspect_ratio;
		int width, height, x, y;
		int scr_width = this->width();
		int scr_height = this->height();

		aspect_ratio = (float)m_nLastFrameWidth / (float)m_nLastFrameHeight;

		height = scr_height;
		width = lrint(height * aspect_ratio) & ~1;
		if (width > scr_width)
		{
			width = scr_width;
			height = lrint(width / aspect_ratio) & ~1;
		}
		x = (scr_width - width) / 2;
		y = (scr_height - height) / 2;


		ui->label->setGeometry(x, y, width, height);
	}

	g_show_rect_mutex.unlock();
}

void Show::dragEnterEvent(QDragEnterEvent* event)
{
	//    if(event->mimeData()->hasFormat("text/uri-list"))
	//    {
	//        event->acceptProposedAction();
	//    }
	event->acceptProposedAction();
}

void Show::resizeEvent(QResizeEvent* event)
{
	Q_UNUSED(event);

	ChangeShow();
}

void Show::keyReleaseEvent(QKeyEvent* event)
{
	qDebug() << "Show::keyPressEvent:" << event->key();
	switch (event->key())
	{
	case Qt::Key_Return://全屏
		SigFullScreen();
		break;
	case Qt::Key_Left://后退5s
		emit SigSeekBack();
		break;
	case Qt::Key_Right://前进5s
		qDebug() << "前进5s";
		emit SigSeekForward();
		break;
	case Qt::Key_Up://增加10音量
		emit SigAddVolume();
		break;
	case Qt::Key_Down://减少10音量
		emit SigSubVolume();
		break;
	case Qt::Key_Space://减少10音量
		emit SigPlayOrPause();
		break;

	default:
		QWidget::keyPressEvent(event);
		break;
	}
}

// void Show::contextMenuEvent(QContextMenuEvent* event)
// {
//     //m_stMenu.exec(event->globalPos());
//     qDebug() << "Show::contextMenuEvent";
// }
void Show::mousePressEvent(QMouseEvent* event)
{
	if (event->buttons() & Qt::RightButton)
	{
		emit SigShowMenu();
	}

	QWidget::mousePressEvent(event);
}

void Show::OnDisplayMsg(QString strMsg)
{
	qDebug() << "Show::OnDisplayMsg " << strMsg;
}

void Show::OnPlay(QString strFile)
{
	VideoCtl::GetInstance()->StartPlay(strFile, ui->label->winId());
}

void Show::OnStopFinished()
{
	update();
}


void Show::OnTimerShowCursorUpdate()
{
	//qDebug() << "Show::OnTimerShowCursorUpdate()";
	//setCursor(Qt::BlankCursor);
}

void Show::OnActionsTriggered(QAction* action)
{
	QString strAction = action->text();
	if (strAction == "全屏")
	{
		emit SigFullScreen();
	}
	else if (strAction == "停止")
	{
		emit SigStop();
	}
	else if (strAction == "暂停" || strAction == "播放")
	{
		emit SigPlayOrPause();
	}
}

bool Show::ConnectSignalSlots()
{
	QList<bool> listRet;
	bool bRet;

	bRet = connect(this, &Show::SigPlay, this, &Show::OnPlay);
	listRet.append(bRet);

	timerShowCursor.setInterval(2000);
	bRet = connect(&timerShowCursor, &QTimer::timeout, this, &Show::OnTimerShowCursorUpdate);
	listRet.append(bRet);

	connect(&m_stActionGroup, &QActionGroup::triggered, this, &Show::OnActionsTriggered);

	for (bool bReturn : listRet)
	{
		if (bReturn == false)
		{
			return false;
		}
	}

	return true;
}

void Show::dropEvent(QDropEvent* event)
{
	QList<QUrl> urls = event->mimeData()->urls();
	if (urls.isEmpty())
	{
		return;
	}

	for (QUrl url : urls)
	{
		QString strFileName = url.toLocalFile();
		qDebug() << strFileName;
		emit SigOpenFile(strFileName);
		break;
	}

	//emit SigPlay(urls.first().toLocalFile());
}