I've tried this but it only scales the first character for some reason, and after I stop scaling the font size returns to normal
value = 0.3; // random value that increases the font size every time this part of the program is called
for(int i = -1; i < textEdit->toPlainText().length() - 1; i++) {
QTextCursor cursor = textEdit->textCursor();
cursor.setPosition(QTextCursor::Start + i, QTextCursor::MoveAnchor); // for some reason the first letter is start - 1 (start might be 1 and programming languages usually start counting at 0)
cursor.setPosition(QTextCursor::Start + (i + 1), QTextCursor::KeepAnchor); // next position and keep anchor to highlight
cursor.charFormat().font().setPointSize(cursor.charFormat().font().pointSize()*(value+1));
QTextCharFormat fmt; // resized but don't work
fmt.setFontPointSize(cursor.charFormat().font().pointSize()*(value+1));
mergeFormatOnWordOrSelection(fmt); // resized and this works
}
void MainWindow::mergeFormatOnWordOrSelection(const QTextCharFormat &format)
{
QTextCursor cursor = textEdit->textCursor();
if (!cursor.hasSelection())
cursor.movePosition(QTextCursor::NextCharacter, QTextCursor::KeepAnchor);
cursor.mergeCharFormat(format);
textEdit->mergeCurrentCharFormat(format);
}