How can I implement a text editor which display it's contents from top to bottom?

I try to implement a text editor which display it's contents from top to bottom (like picture shown). Could you give me some suggestions? Thank you!

In Qt4.4 you can put a QTextEditor into a QGraphicsScene. Now sure how trivial it is... and how "fast" do you need this, but it's a start :)

Wouldn't plain QGraphicsTextItem suffice? Adjust QGraphicsTextItem::interactionFlags() and QGraphicsItem::rotate().

Quote:

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Originally Posted by jpn

Wouldn't plain QGraphicsTextItem suffice? Adjust QGraphicsTextItem::interactionFlags() and QGraphicsItem::rotate().

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I rotate the item,but the secord line appeared on left of first line.How can I make the secorn line displayed on right of the first line?

Man, that's weird requirement. :eek: Perhaps you could lay the text by hand with help of QTextLayout.

Quote:

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Originally Posted by jpn

Perhaps you could lay the text by hand with help of QTextLayout.

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I tried QTextLayout and got the right alignment.But the Item does not display when I am typing.As soon as I press Enter,the Item displays the line that I just input at one moment.And the textcursor does not flash.I guess it may be the item refresh region is not my layout region.Can you give me some advise?

Code:

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//Here is some code in paint
textLayout.beginLayout();
while (1) {
	QTextLine line = textLayout.createLine();
	if (!line.isValid())
		break;
	line.setLineWidth(200);
	line.setPosition(QPoint(0,height));
	height += (int) line.height();
}
myheight+=height;		
textLayout.endLayout();
textLayout.draw(painter,QPointF(0,myheight));

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You'll need to do the blinking cursor yourself with help of a timer.