Change QLineEdit text cursor shape

[brisco]

Hi All,

Is there any way to change the blinking text cursor shape in
a QLineEdit widget? Such as, to change the shape of the cursor
from thin vertical line to a block style.

Thanks

Brisco

[tony]

Well, you can customize QStyle in order to return a different cursor size for QStyle::PM_TextCursorWidth

Example for a 10-pixel large cursor ( just an idea, it's not written in a clean way :) ):

class LineEditStyle : public QCommonStyle
{
public:
  int pixelMetric(PixelMetric metric, const QStyleOption *option = 0, const QWidget *widget = 0) const;
};

class LineEdit : public QLineEdit
{
    Q_OBJECT

public:
    LineEdit(QWidget *parent = 0);
};

int LineEditStyle::pixelMetric(PixelMetric metric, const QStyleOption *option, const QWidget *widget) const
{
  if (metric == QStyle::PM_TextCursorWidth)
    return 10;

  return QCommonStyle::pixelMetric(metric,option,widget);
}

LineEdit::LineEdit(QWidget *parent)
    : QLineEdit(parent)
{
  setStyle(new LineEditStyle);
}

Allocate a LineEdit and it should work :) AFAIK, you can change the width, but I haven't found any other properties.

Antonio.

[tony]

Hey, I didn't know that there's QProxyStyle class, that lets you implement the above solution in a better way :)

class LineEditStyle : public QProxyStyle
{
public:
  LineEditStyle(QStyle *style = 0) : QProxyStyle(style) { }

  int pixelMetric(PixelMetric metric, const QStyleOption *option = 0, const QWidget *widget = 0) const;
};

class LineEdit : public QLineEdit
{
  Q_OBJECT

public:
  LineEdit(QWidget *parent = 0);
};

int LineEditStyle::pixelMetric(PixelMetric metric, const QStyleOption *option, const QWidget *widget) const
{
  if (metric == QStyle::PM_TextCursorWidth)
    return 10;

  return QProxyStyle::pixelMetric(metric,option,widget);
}

LineEdit::LineEdit(QWidget *parent)
    : QLineEdit(parent)
{
  setStyle(new LineEditStyle(style()));
}

So it will adapt perfectly to your default style for QLineEdit.

[brisco]

Antonio,

It works.

Thanks for your helpful reply.

[Guest]

Why I can't apply this solution on a QTextEdit's cursor?