#include "keyboard.h"
#include "ui_keyboard.h"
#include "qdesktopwidget.h"

Keyboard *Keyboard::_instance = 0;
Keyboard::Keyboard(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::Keyboard)
{
    ui->setupUi(this);

    this->setWindowFlags(Qt::Dialog|Qt::FramelessWindowHint|Qt::WindowStaysOnTopHint|Qt::Tool);
    this->InitStyle();
    this->InitProperty();
    this->InitForm();
    ui->slDiaphaneity->setValue(50);
    this->setGeometry(578,370,2,2);

    threadK = new MyThread(this);
}

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

void Keyboard::mouseMoveEvent(QMouseEvent *e)
{
    if (mousePressed && (e->buttons() && Qt::LeftButton))
    {
        this->move(e->globalPos() - mousePoint);
        e->accept();
    }
}

//void Keyboard::mousePressEvent(QMouseEvent *e)
//{
//    if (e->button() == Qt::LeftButton)
//    {
//        mousePressed = true;
//        mousePoint = e->globalPos() - this->pos();
//        e->accept();
//    }
//}

//void Keyboard::mouseReleaseEvent(QMouseEvent *)
//{
//    mousePressed = false;
//}

void Keyboard::InitStyle()
{
    this->setProperty("Form", true);
    this->mousePressed = false;
    this->setWindowFlags(Qt::Tool | Qt::WindowStaysOnTopHint | Qt::FramelessWindowHint);
    changeStyle("#4D4D4D", "#292929", "#C2CCD8", "#F0F0F0");

    QDesktopWidget w;
    deskWidth = w.availableGeometry().width();
    deskHeight = w.availableGeometry().height();
//    frmWidth = this->width();
//    frmHeight = this->height();
    //自动填充在底部
    this->setGeometry(0,0,deskWidth,deskHeight);
}

void Keyboard::InitForm()
{
    menuStyle = new QMenu(this);
    menuStyle->addAction("Pale blue", this, SLOT(change_style()));
    menuStyle->addAction("Blue", this, SLOT(change_style()));
    menuStyle->addAction("Grey", this, SLOT(change_style()));
    menuStyle->addAction("Black", this, SLOT(change_style()));
    menuStyle->addAction("Dark gray", this, SLOT(change_style()));
    menuStyle->addAction("White", this, SLOT(change_style()));
    menuStyle->addAction("Silvery", this, SLOT(change_style()));

    currentType = "min";
    currentTextEdit = 0;
    changeType("min");

    QList<QPushButton *> btn = this->findChildren<QPushButton *>();
    foreach (QPushButton *b, btn)
    {
        connect(b, SIGNAL(clicked()), this, SLOT(btn_clicked()));
    }

    //绑定全局改变焦点信号槽
    connect(qApp, SIGNAL(focusChanged(QWidget *, QWidget *)), this, SLOT(focusChanged(QWidget *, QWidget *)));
    //绑定按键事件过滤器
    qApp->installEventFilter(this);
}

void Keyboard::InitProperty()
{
    ui->btnOther1->setProperty("btnOther", true);
    ui->btnOther2->setProperty("btnOther", true);
    ui->btnOther3->setProperty("btnOther", true);
    ui->btnOther4->setProperty("btnOther", true);
    ui->btnOther5->setProperty("btnOther", true);
    ui->btnOther6->setProperty("btnOther", true);
    ui->btnOther7->setProperty("btnOther", true);
    ui->btnOther8->setProperty("btnOther", true);
    ui->btnOther9->setProperty("btnOther", true);
    ui->btnOther10->setProperty("btnOther", true);
    ui->btnOther11->setProperty("btnOther", true);
    ui->btnOther12->setProperty("btnOther", true);
    ui->btnOther13->setProperty("btnOther", true);
    ui->btnOther14->setProperty("btnOther", true);
    ui->btnOther15->setProperty("btnOther", true);
    ui->btnOther16->setProperty("btnOther", true);
    ui->btnOther17->setProperty("btnOther", true);
    ui->btnOther18->setProperty("btnOther", true);
    ui->btnOther19->setProperty("btnOther", true);

    ui->btn0->setProperty("btnNum", true);
    ui->btn1->setProperty("btnNum", true);
    ui->btn2->setProperty("btnNum", true);
    ui->btn3->setProperty("btnNum", true);
    ui->btn4->setProperty("btnNum", true);
    ui->btn5->setProperty("btnNum", true);
    ui->btn6->setProperty("btnNum", true);
    ui->btn7->setProperty("btnNum", true);
    ui->btn8->setProperty("btnNum", true);
    ui->btn9->setProperty("btnNum", true);

    ui->btna->setProperty("btnLetter", true);
    ui->btnb->setProperty("btnLetter", true);
    ui->btnc->setProperty("btnLetter", true);
    ui->btnd->setProperty("btnLetter", true);
    ui->btne->setProperty("btnLetter", true);
    ui->btnf->setProperty("btnLetter", true);
    ui->btng->setProperty("btnLetter", true);
    ui->btnh->setProperty("btnLetter", true);
    ui->btni->setProperty("btnLetter", true);
    ui->btnj->setProperty("btnLetter", true);
    ui->btnk->setProperty("btnLetter", true);
    ui->btnl->setProperty("btnLetter", true);
    ui->btnm->setProperty("btnLetter", true);
    ui->btnn->setProperty("btnLetter", true);
    ui->btno->setProperty("btnLetter", true);
    ui->btnp->setProperty("btnLetter", true);
    ui->btnq->setProperty("btnLetter", true);
    ui->btnr->setProperty("btnLetter", true);
    ui->btns->setProperty("btnLetter", true);
    ui->btnt->setProperty("btnLetter", true);
    ui->btnu->setProperty("btnLetter", true);
    ui->btnv->setProperty("btnLetter", true);
    ui->btnw->setProperty("btnLetter", true);
    ui->btnx->setProperty("btnLetter", true);
    ui->btny->setProperty("btnLetter", true);
    ui->btnz->setProperty("btnLetter", true);

    ui->labInfo->setProperty("labVideo", true);
}

void Keyboard::change_style()
{
    QAction *action = (QAction *)sender();
    QString style = action->text();
    if (style == "Pale blue")
        changeStyle("#C0D3EB", "#BCCFE7", "#B4C2D7", "#324C6C");
    else if (style == "Blue")
        changeStyle("#DEF0FE", "#C0DEF6", "#C0DCF2", "#386487");
    else if (style == "Grey")
        changeStyle("#E4E4E4", "#A2A2A2", "#DCDCDC", "#000000");
    else if (style == "Black")
        changeStyle("#4D4D4D", "#292929", "#C2CCD8", "#F0F0F0");
    else if (style == "Dark gray")
        changeStyle("#667481", "#566373", "#C2CCD8", "#E7ECF0");
    else if (style == "White")
        changeStyle("#EEEEEE", "#E5E5E5", "#DCDCDC;", "#000000");
    else if (style == "Silvery")
        changeStyle("#E1E4E6", "#CCD3D9", "#B2B6B9;", "#000000");
}

void Keyboard::changeStyle(QString topColor, QString bottomColor, QString borderColor, QString textColor)
{
    QStringList qss;
    qss.append(QString("QWidget#Keyboard{background:qlineargradient(spread:pad,x1:0,y1:0,x2:0,y2:1,stop:0 %1,stop:1 %2);}")
               .arg(topColor).arg(bottomColor));
    qss.append("QPushButton{padding:5px;border-radius:3px;}");
    qss.append(QString("QPushButton:hover{background:qlineargradient(spread:pad,x1:0,y1:0,x2:0,y2:1,stop:0 %1,stop:1 %2);}")
               .arg(topColor).arg(bottomColor));
    qss.append(QString("QLabel,QPushButton{color:%1;}")
               .arg(textColor));
    qss.append(QString("QPushButton{border:1px solid %1;}")
               .arg(borderColor));
    qss.append(QString("QMenu{color:%1;background-color:%2;}")
               .arg(textColor).arg(topColor));
    qss.append("QMenu::item{padding:3px 10px 3px 10px;}");
    qss.append(QString("QMenu::item:selected{background-color:%1;}")
               .arg(bottomColor));
    qss.append(QString("QLineEdit{border:1px solid %1;border-radius:5px;padding:2px;background:none;selection-background-color:%2;selection-color:%3;}")
               .arg(borderColor).arg(bottomColor).arg(topColor));
    this->setStyleSheet(qss.join(""));
}

void Keyboard::on_slDiaphaneity_valueChanged(int value)
{
    this->setWindowOpacity((100-value)*0.01);
}

void Keyboard::changeType(QString type)
{
    if (type == "max")
    {
        changeLetter(true);
        ui->btnType->setText("Uppercase");
        ui->labInfo->setText("Current Input--Uppercase");
    }
    else if (type == "min")
    {
        changeLetter(false);
        ui->btnType->setText("Lowercase");
        ui->labInfo->setText("Current Input--Lowercase");
    }
}

void Keyboard::changeLetter(bool isUpper)
{
    QList<QPushButton *> btn = this->findChildren<QPushButton *>();
    foreach (QPushButton *b, btn)
    {
        if (b->property("btnLetter").toBool())
        {
            if (isUpper)
            {
                b->setText(b->text().toUpper());
            }
            else
            {
                b->setText(b->text().toLower());
            }
        }
    }
}


void Keyboard::focusChanged(QWidget */*oldWidget*/, QWidget *nowWidget)
{
    //qDebug() << "oldWidget:" << oldWidget << "nowWidget:" << nowWidget;
    if (nowWidget != 0 && !this->isAncestorOf(nowWidget)) {
        if (nowWidget->inherits("QTextEdit"))
        {
            currentTextEdit = (QTextEdit *)nowWidget;
            this->setVisible(true);
        }
        else
        {
            currentTextEdit = 0;
            this->setVisible(false);
            currentType="min";
            changeType(currentType);
        }
    }
}

void Keyboard::btn_clicked()
{
    QPushButton *btn = (QPushButton *)sender();
    QString objectName = btn->objectName();
    cursor = currentTextEdit->textCursor();
    if (objectName == "btnType")
    {
        if (currentType == "min")
        {
            currentType = "max";
        }
        else if (currentType == "max")
        {
            currentType = "min";
        }
        changeType(currentType);
    }
    else if (objectName == "btnDelete" || objectName == "btnDeleteMin")
    {
        if (currentTextEdit != 0)
        {
            if(cursor.hasSelection())
                cursor.removeSelectedText();
            cursor.deletePreviousChar();
            currentTextEdit->show();
        }
    }
    else if (objectName == "btnEnter")
    {
//        int countNum = currentTextEdit->document()->lineCount();
//        QString currentLineText = currentTextEdit->document()->findBlockByLineNumber(countNum).text();
        threadK->uartSend(cursor.block().text(), currentTtyPort);
        currentTextEdit->insertPlainText("\r\n");
    }
    else if (objectName == "btnClose")
    {
        this->setGeometry(578,370,2,2);
    }
    else if (objectName == "btnStyle")
    {
        menuStyle->exec(QCursor::pos());
    }
    else
    {
        QString value = btn->text();
        //如果是&按钮，因为对应&被过滤,所以真实的text为去除前面一个&字符
        if (objectName == "btnOther7")
        {
            value = value.right(1);
        }
        //单击按钮对应text为传递参数
        if (currentTextEdit != 0)
        {
            currentTextEdit->insertPlainText(value);
        }
    }
}