chat widget

//mylabelchat.h

#ifndef MYLABELCHAT_H
#define MYLABELCHAT_H

#include <QWidget>
#include <QLabel>
#include <QObject>
#include <QMouseEvent>
#include <QPaintEvent>
#include <QEvent>

class QGraphicsView;
class QGraphicsPixmapItem;
class QGraphicsScene;
class QPushButton;

class MyLabelChat : public QWidget
{
    Q_OBJECT
public:
    MyLabelChat(QPixmap pixmap, QWidget *parent = nullptr);

    QPushButton *button_close;
    bool _flag_active = false;
    int _status = 0;
    int _num_row = 0;
    int _num_mess = 0;
    QLabel *_text;


    void my_repaint(QColor col, int status);
    void my_update();
    void set_text(QString);

    signals:
        void signal_chatuser_pressed(const QString &);
        void signal_delete_user(const QString &);

    protected:
        bool event( QEvent *event) override;
        void mousePressEvent(QMouseEvent *event) override;

    private slots:
        void delete_chat_user();

    private:

    QGraphicsView *foto;
    QGraphicsScene *scene;
    QColor color;
    QPixmap _pixmap;
};

#endif // MYLABELCHAT_H







//mylabelchat.cpp


#include "mylabelchat.h"

#include <QHBoxLayout>
#include <QPainter>
#include <QDebug>
#include <QGraphicsView>
#include <QGraphicsPixmapItem>
#include <QGraphicsScene>
#include <QPushButton>

#include "global.h"

MyLabelChat::MyLabelChat(QPixmap pixmap, QWidget *parent) : QWidget(parent)
{
    _pixmap = pixmap.scaled(QSize(80, 80), Qt::KeepAspectRatio, Qt::SmoothTransformation);

    QHBoxLayout *box = new QHBoxLayout(this);
    box->setSpacing(0);
    box->setMargin(2);
    scene = new QGraphicsScene(this);

    foto = new QGraphicsView(scene);
    foto->setSceneRect(QRect(0, 0, 80, 80));
    foto->setScene(scene);
    foto->setRenderHint(QPainter::Antialiasing, true);
    foto->setStyleSheet("border:none;");
    foto->setSizePolicy(QSizePolicy::Fixed,QSizePolicy::Fixed);
    foto->setFixedSize(80, 80);

    _text = new QLabel(this);
    _text->setSizePolicy(QSizePolicy::Preferred,QSizePolicy::Fixed);
    _text->setFixedHeight(80);

    button_close = new QPushButton(_text);
    button_close->setSizePolicy(QSizePolicy::Fixed,QSizePolicy::Fixed);
    button_close->setFixedSize(16, 16);
    button_close->move(_text->width() - 12, 0);
    button_close->setStyleSheet("QPushButton{ border-image: url(:/image/delete2.png); }");
    button_close->setToolTip("Удалить");
    button_close->setVisible(false);
    connect(button_close, &QPushButton::clicked, this, &MyLabelChat::delete_chat_user);

    color = this->palette().color(QPalette::Background);

    this->setFixedHeight(80);

    box->addWidget(foto);
    box->addWidget(_text);
    my_update();
}

void MyLabelChat::set_text(QString str)
{
_text->setText(str);
}

bool MyLabelChat::event(QEvent *event)
{
    if (event->type() == QEvent::Enter )
    {
        if(!_flag_active)
        my_repaint(QColor(186,226,255), _status);

        button_close->setVisible(true);
    }
    else
    if(event->type() == QEvent::Leave)
    {
        if(!_flag_active)
        my_repaint(color, _status);

        button_close->setVisible(false);
    }
    return QWidget::event(event);
}

void MyLabelChat::mousePressEvent(QMouseEvent *event)
{
    if(event->button() == Qt::LeftButton)
    {
    my_repaint(QColor(166,206,255), _status);

    _flag_active = true;
    emit signal_chatuser_pressed(this->objectName());
    }
}

void MyLabelChat::delete_chat_user()
{
    emit signal_delete_user(this->objectName());
}


void MyLabelChat::my_repaint(QColor col, int status)
{
    scene->clear();
    QColor ell_color;

    switch (status)
    {
    case Enabled:
    ell_color = Qt::green;
    break;
    case Lunch:
    ell_color = Qt::blue;
    break;
    case Conference:
    ell_color = Qt::red;
    break;
    }

    QPixmap temp = _pixmap;
    int pen_widht = 40;
    int border = 8;

    scene->addPixmap(temp);

    QGraphicsEllipseItem *ellipse = new QGraphicsEllipseItem;
    ellipse->setRect(QRectF(-pen_widht/2 + border/2, -pen_widht/2 + border/2,
            temp.width()+pen_widht -border, temp.height()+pen_widht -border));
    ellipse->setBrush(QBrush(Qt::transparent));
    ellipse->setPen(QPen(col,pen_widht));

    scene->addItem(ellipse);//круглая рамка

    if(status > 0)
    {
    QGraphicsEllipseItem *ellipse2 = new QGraphicsEllipseItem;

    ellipse2->setRect(QRectF(56, 60, 16, 16));
    ellipse2->setBrush(ell_color);
    ellipse2->setPen(QPen(Qt::white,2));
    scene->addItem(ellipse2);//статус
    }

    if(_num_mess)
    {
    int size = 28;
    QPixmap pix(":/image/email_3.png");
    QPixmap new_pix = pix.scaledToWidth(size, Qt::SmoothTransformation);

    QPainter painter;//количество непрочитанных сообщений
    painter.begin(&new_pix);
    painter.setRenderHint(QPainter::Antialiasing);
    painter.setPen(Qt::red);
    painter.setFont(QFont("Arial", 15, QFont::Bold));
    painter.drawText(QRectF(0, -3, size, size), Qt::AlignCenter, QString::number(_num_mess));
    painter.end();

    QGraphicsPixmapItem *item = scene->addPixmap(new_pix);
    item->setPos(QPointF(50, 6));

    }
    _text->setStyleSheet(QString("background-color: "+ col.name()));
}

void MyLabelChat::my_update()
{
    if(!_flag_active)
 my_repaint(color, _status);
    else
 my_repaint(QColor(166,206,255), _status);

}






//использование
QPixmap pixmap("image.png");
MyLabelChat *label = new MyLabelChat(pixmap, this);

QVBoxLayout* layout = new QVBoxLayout(this);
layout->addWidget(label);

connect(label, &MyLabelChat::signal_chatuser_pressed, this, &MainWindow::slot_chatuser_pressed);
connect(label, &MyLabelChat::signal_delete_user, this, &MainWindow::slot_delete_user);

label->set_text("name");
label->show();