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C++ (Qt)
QFontMetrics::height

C++ (Qt)
int QFontMetrics::height () const
Returns the height of the font.
This is always equal to ascent()+descent()+1 (the 1 is for the base line).
See also leading() and lineSpacing().

C++ (Qt)
int QFontMetrics::lineSpacing () const
Returns the distance from one base line to the next.
This value is always equal to leading()+height().
See also height() and leading().

C++ (Qt)
int QFontMetrics::leading () const
Returns the leading of the font.
This is the natural inter-line spacing.
See also height() and lineSpacing().

C++ (Qt)
    int height = QFontMetrics(font()).boundingRect(QRect(), alignment, text).height();

C++ (Qt)
#include <QApplication>
#include <QWidget>
#include <QVBoxLayout>
#include <QTextBrowser>
 
int main(int argc, char **argv)
{
    QApplication app(argc, argv);
 
    QWidget *pWidget = new QWidget;
 
    QTextBrowser *pText = new QTextBrowser;
    pText->setSource(QUrl("qrc:/all/files/index.html"));
    pText->adjustSize();
 
    QVBoxLayout *pLayoutVertical = new QVBoxLayout;
    pLayoutVertical->addStretch(1);
    pLayoutVertical->addWidget(pText, 0);
 
    pWidget->setLayout(pLayoutVertical);
    pWidget->showMaximized();
 
    return app.exec();
}
 

C++ (Qt)
QSize MyTextEdit::sizeHint() const
{
    QMargins m(contentsMargins());
    return document()->size() + QSize(m.left() + m.right(), m.top() + m.bottom());
}
 

C++ (Qt)
QSize MyTextEdit::sizeHint() const
{
    QMargins m(contentsMargins());
    return document()->size() + QSize(m.left() + m.right(), m.top() + m.bottom());
}
 

C++ (Qt)
#include <QApplication>
#include <QWidget>
#include <QVBoxLayout>
#include <QTextBrowser>
#include <iostream>
 
class evgTextBrowser : public QTextBrowser
{
public:
    explicit evgTextBrowser(QWidget *parent = 0) : QTextBrowser(parent) {}
 
    QSize sizeHint() const {
        QMargins m(contentsMargins());
        return document()->size().toSize() + QSize(m.left() + m.right(), m.top() + m.bottom());
    }
};
 
int main(int argc, char **argv)
{
    QApplication app(argc, argv);
 
    QWidget *pWidget = new QWidget;
 
    evgTextBrowser *pText = new evgTextBrowser;
    pText->setSource(QUrl("qrc:/all/files/index.html"));
    pText->adjustSize();
 
 
    QVBoxLayout *pLayoutVertical = new QVBoxLayout;
    pLayoutVertical->addStretch(1);
    pLayoutVertical->addWidget(pText, 0);
 
    pWidget->setLayout(pLayoutVertical);
    pWidget->showMaximized();
 
    return app.exec();
}
 

C++ (Qt)
return document()->size() + QSize(m.left() + m.right(), m.top() + m.bottom());

C++ (Qt)
#ifndef EVGTEXTBROWSER_H
#define EVGTEXTBROWSER_H
 
#include <QTextBrowser>
 
class evgTextBrowser : public QTextBrowser
{
    Q_OBJECT
public:
    explicit evgTextBrowser(QWidget *parent = 0);
 
    QSize sizeHint() const;
    QSize minimumSizeHint() const;
 
 
signals:
 
public slots:
 
};
 
#endif // EVGTEXTBROWSER_H
 

C++ (Qt)
#include "evgtextbrowser.h"
 
evgTextBrowser::evgTextBrowser(QWidget *parent) :
    QTextBrowser(parent)
{
}
 
QSize evgTextBrowser::sizeHint() const
{
    if (document()->isEmpty())
        return QSize(0, 0);
    else
    {
        QMargins m(contentsMargins());
        return document()->size().toSize() + QSize(m.left() + m.right(), m.top() + m.bottom());
    }
}
 
QSize evgTextBrowser::minimumSizeHint() const
{
    if (document()->isEmpty())
        return QSize(0, 0);
    else
        return document()->size().toSize();
}