set default QTextBlockFormat for QTextDocument?

[tuli]

Hi,

I am formatting a QTextDocument in a specific way, most notably I change the line high to +1 for the entire document, which is done like this:

QTextCursor cursor(document());
	QTextBlockFormat block;
	do{
		block = cursor.blockFormat();
		block.setLineHeight(1, QTextBlockFormat::LineDistanceHeight);
		cursor.setBlockFormat(block);
	} while(cursor.movePosition(QTextCursor::NextBlock));

QTextCursor cursor(document());
	QTextBlockFormat block;
	do{
		block = cursor.blockFormat();
		block.setLineHeight(1, QTextBlockFormat::LineDistanceHeight);
		cursor.setBlockFormat(block);
	} while(cursor.movePosition(QTextCursor::NextBlock));

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This has been identified as a major performance bottleneck (in particular the cursor.setBlockFormat call).

Since I am setting always the same thing for the entire document - surely there has to be a better way of setting the format/line spacing as a default for the entire document? Perhaps even before inserting the text?


Thanks for your help.