Custom messagebox does not appear in the specified size range

[Kaguro]

Hi Guys!
I created a custom messagebox class like this:

It comes from QDialog and contains qlabels and X and ok qpushbutton. My problem is that i would like to appear in a range width. So if the message text (its qlabel too) can contain in a smaller width then appear that width if not then longer width.
So i set minimum width to 200 and maximum width 1200. But the messagebox ALWAYS appear in 200 (so the minimum width) and i dont know how can i achive this.
Any idea?
Thanks for your helping!

[SGaist]

Then from the looks of it, you should evaluate the size of the text using QFontMetrics and resize the widget.

[SGaist]

Hi,

How are you building your widget ?

How would you determine that the widget should expand its width ?

[Kaguro]

@SGaist said in Custom messagebox does not appear in the specified size range:

How would you determine that the widget should expand its width

The message QLabel has a minwidth and maxwidth (i set it with setminwidth and setmaxwidth). I would like to achive when the text longer then minwidth start increasing the width of the dialog continuously up to maxwidth ( if necessary ) if the text is more longer, wrap the text (its working).
Here is my code:

MessageBoxD.cpp

MessageBoxD::MessageBoxD(QWidget *parent) : QDialog(0, Qt::FramelessWindowHint)
{
    QFile file("./messagebox.qss");
    file.open(QFile::ReadOnly);
    QString styleSheet = file.readAll();
    this->setStyleSheet(styleSheet);

    this->setMinimumWidth(400);
    this->setMaximumWidth(1500);

    this->setWindowFlags(Qt::FramelessWindowHint | Qt::SubWindow);

    this->h = new QHBoxLayout(this);
    h->setSpacing(0);
    h->setContentsMargins(0,0,0,0);

    this-> gl = new QGridLayout;
    this->m_parent = parent;
    this->buttonBox = new QDialogButtonBox();
    buttonBox->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
    buttonBox->setContentsMargins(7,7,7,7);

    h->addWidget(buttonBox);

    this->cs = new QLabel(this);
    cs->setWordWrap(true);
    cs->setObjectName("body");
    cs->setAlignment(Qt::AlignCenter);

    m_parent->installEventFilter(this);
    this->installEventFilter(this);

    QLabel *ic = new QLabel;
    QLabel *bot = new QLabel;

    bot->setLayout(h);

    header = new MessageHeader("INFORMÁCIÓ",Type::Information,this);
    header->setWordWrap(true);

    ic->setFixedWidth(55);
    ic->setFixedHeight(55);
    bot->setFixedHeight(55);
    header->setFixedHeight(55);

    header->installEventFilter(this);

    this->bClose = new QPushButton(this);
    bClose->setFocusPolicy(Qt::NoFocus);
    bClose->setFixedSize(55,55);
    connect(bClose, &QPushButton::clicked,this, [=] { exitClick();});

    gl->addWidget(ic,0,0,1,1);
    gl->addWidget(header,0,1,1,8);
    gl->addWidget(bClose,0,9,1,1);
    gl->addWidget(bot,4,1,1,9);
    gl->addWidget(cs,1,1,3,9);
    gl->setSpacing(0);
    gl->setContentsMargins(0,0,0,0);

    setAttribute(Qt::WA_TranslucentBackground);
}

void MessageBoxD::Set_HeaderText(const QString &text)
{
    header->Set_Text(text);
}

void MessageBoxD::Set_Text(const QString &text)
{
    cs->setText(text);
}

void MessageBoxD::showEvent(QShowEvent *)
{
     QPushButton *button = new QPushButton("Ok");
     button->setObjectName("choicebutton");
     button->setProperty("ActionRole",1);
     button->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
     buttonBox->addButton(button,QDialogButtonBox::ActionRole);
     connect(button, &QPushButton::clicked,this, [=] { dialogButtonClicked(button);});
     button->setCursor(Qt::PointingHandCursor);
   
     setLayout(gl);

    const QPoint global = m_parent->mapToGlobal(rect().topLeft());
    this->move(global.x() + ((m_parent->width()/2)-(this->width()/2)), global.y() + ((m_parent->height()/2)-(this->height()/2)));
}

bool MessageBoxD::eventFilter(QObject *obj, QEvent *e)
{
    if((e->type() == QEvent::MouseButtonPress && obj==header))
    {
        position = QPoint(static_cast<QMouseEvent*>(e)->globalPosition().x()-geometry().x(), static_cast<QMouseEvent*>(e)->globalPosition().y()-geometry().y());
    }

    if((e->type() == QEvent::MouseMove && obj==header))
    {
        if(static_cast<QMouseEvent*>(e)->buttons() & Qt::LeftButton )
        {
             QPoint toMove = static_cast<QMouseEvent*>(e)->globalPosition().toPoint() - position;
             move(toMove);
        }
    }
}

void MessageBoxD::dialogButtonClicked(QAbstractButton *button)
{
    int actionRole = button->property("ActionRole").toInt();
    done(actionRole);
}

void MessageBoxD::exitClick()
{
    done(-1);
}

Messageheader.cpp

MessageHeader::MessageHeader(const QString &Text,Type type,QWidget *parent)
{
    if(type==Type::Information)
        this->setObjectName("lineinfo");

    this->setContentsMargins(0,0,0,0);
    this->setText(Text.rightJustified(Text.length()+2, ' '));
    this->m_parent = parent;
}

void MessageHeader::Set_Text(const QString &text)
{
    this->setText(text.rightJustified(text.length()+2, ' '));
}

Thanks for your help! :)

[SGaist]

Then from the looks of it, you should evaluate the size of the text using QFontMetrics and resize the widget.

[Kaguro]

@SGaist Thank you very much for your help! :) It's works with the QFontMetrics and after it resize the widget! Thanks again! :)