#include "backlightwidget.h"
#include "ui_backlightwidget.h"
#include "ibacklight.h"
#include <QPainter>
#include <QPen>
#include <QBrush>
#include <QGuiApplication>
#include <QScreen>
#include <QDebug>
#include "systemmanager.h"

BacklightWidget::BacklightWidget(QWidget *parent) :
    IWidget(parent),
    ui(new Ui::BacklightWidget),
    m_currentBacklight(NULL)
{
    ui->setupUi(this);
}

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

void BacklightWidget::initUi()
{

    this->createColowWidget();

    QGuiApplication *app = dynamic_cast<QGuiApplication*>(qApp);

     if(!SystemManager::instance()->platformInfo().contains("noscreenname"))
     {
         foreach (QScreen *screen,  app->screens()) {
             ui->comboBox->addItem(screen->name());
         }
     }else{
         foreach (Backlight *b,  m_backlights) {
             ui->comboBox->addItem(b->screenName());
         }
     }

    ui->textBrowser->append("screen information: ");

    connect(ui->comboBox, &QComboBox::currentTextChanged, this, [=](const QString &name){
        foreach (Backlight *b, m_backlights) {

            qDebug()<< b->screenName() << "/" << name;
            if(b->screenName() == name){
                if(m_currentBacklight != NULL && m_currentBacklight->screenName() != name)
                {
                    m_currentBacklight->close();
                }
                m_currentBacklight =  b;
                ui->horizontalSlider->setEnabled(m_currentBacklight->open());
                break;
            }
        }

        foreach (QScreen *screen,  app->screens()) {
            QString screenName =screen->name();

            if(SystemManager::instance()->platformInfo().contains("noscreenname"))
            {
                screenName = QString("%1x%2").arg(screen->size().width()).arg(screen->size().height());
            }
            if(screenName == name){
                ui->textBrowser->clear();
                ui->textBrowser->append(QString("屏幕个数: %1").arg(app->screens().count()));
                ui->textBrowser->append(QString("屏幕像素分辨率: %1 X %2").arg( screen->size().width()).arg(screen->size().height()));
                ui->textBrowser->append(QString("屏幕可用大小（像素为单位）: %1 X %2").arg( screen->availableSize().width()).arg(screen->availableSize().height()));
                ui->textBrowser->append(QString("每英寸的逻辑点或像素数: %1").arg( screen->logicalDotsPerInch()));
                ui->textBrowser->append(QString("屏幕的颜色深度): %1").arg( screen->depth()));
                ui->textBrowser->append(QString("垂直刷新率 Hz: %1").arg( screen->refreshRate()));
                break;
            }
        }

    });
    QString screename;
    if(SystemManager::instance()->platformInfo().contains("noscreenname"))
    {
        if(m_backlights.size() >0){
            screename = m_backlights.at(0)->screenName();
        }
    }else{
        screename =app->primaryScreen()->name();
    }


    ui->comboBox->setCurrentText(screename);

    //更该下默认屏幕.
    ui->comboBox->currentTextChanged(screename);

    connect(app, &QGuiApplication::screenAdded, this, [=](QScreen *screen){
        ui->textBrowser->append(QString("screen add:  %1").arg(screen->name()));
        int index = ui->comboBox->findText(screen->name());
        if(index !=-1)
        {
            ui->comboBox->removeItem(index);
        }
    });

    connect(app, &QGuiApplication::screenRemoved, this, [=](QScreen *screen){
        ui->textBrowser->append(QString("screen remove: %1").arg(screen->name()));
        int index = ui->comboBox->findText(screen->name());
        if(index !=-1)
        {
            ui->comboBox->removeItem(index);
        }
    });

    if(m_backlights.size() <=0)
    {
        ui->textBrowser->append("backling config is empty!");
    }

    connect(ui->horizontalSlider, &SliderWidget::valueChanged, this, [=](int value){
        if(m_currentBacklight != NULL)
        {
            m_currentBacklight->setValue(value);
            qCDebug(flapp)<<"set backligt value: "<< value;
            system("sync");
        }

        ui->valueLbl->setText(QString::number(value));
    });

    if(m_currentBacklight != NULL)
    {
        int value = m_currentBacklight->getValue();
        int min=0;
        int max=0;
        m_currentBacklight->getRange(min, max);
        ui->minLbl->setText(QString::number(min));
        ui->maxLbl->setText(QString::number(max));
        ui->horizontalSlider->blockSignals(true);
        ui->horizontalSlider->setRange(min, max);
        ui->horizontalSlider->setValue(value);
        ui->valueLbl->setText(QString::number(value));
        ui->horizontalSlider->blockSignals(false);
    }
}

void BacklightWidget::createColowWidget()
{
    int space = this->height()/32; ;
    ui->verticalLayout_4->setSpacing(space);
    auto createCircle = [=](QWidget *p, const QColor &color){
        p->setFixedSize(38, 38);
        p->setAutoFillBackground(true);
        QPixmap pixmap(p->size());
        QPainter painter(&pixmap);
        painter.setPen(color);
        painter.setRenderHint(QPainter::Antialiasing);
        QRect rect = p->rect();
        rect =rect.adjusted(1,1,-1,-1);
        QPalette backPaalette= this->palette();
        painter.fillRect(p->rect(), backPaalette.brush(QPalette::Background));
        painter.setBrush(color);
        painter.drawEllipse(rect);
        QPalette palette = p->palette();
        palette.setBrush(QPalette::Background, pixmap);
        p->setPalette(palette);
    };
    createCircle(ui->redWidget, Qt::red);
    createCircle(ui->greenWidget, Qt::green);
    createCircle(ui->blueWidget, Qt::blue);
}

QString BacklightWidget::id()
{
    return "screen";
}

void BacklightWidget::loadData(const QDomElement &head, const QDomElement &body)
{
    Q_UNUSED(body)

    Backlight *backlight;
    for(int i=0; i<head.childNodes().size(); i++)
    {
        QDomElement e = head.childNodes().at(i).toElement();
        QString devName = e.attribute("devName");
        QString screenName = e.attribute("screenName");
        int min = e.attribute("min").toInt();
        int max = e.attribute("max").toInt();

        if(SystemManager::instance()->platformInfo().contains("t507"))
        {
            backlight = new  T507(devName, screenName, min, max);
        }else{
            backlight = new  Backlight(devName,screenName, min, max);
        }
        m_backlights << backlight;
    }
}