<div>cairo_paint() should do.</div><div> </div><div>--MK</div><div> </div><div>27.08.2010, 17:11, "necko necko" <opustenom@hotmail.com>:</div><blockquote><br /><br />> Date: Fri, 27 Aug 2010 14:46:03 +0200<br />> Subject: Re: [cairo] Changing line color<br />> From: <a href="mailto:mkbosmans@gmail.com">mkbosmans@gmail.com</a><br />> To: <a href="mailto:opustenom@hotmail.com">opustenom@hotmail.com</a><br />> CC: <a href="mailto:cairo@cairographics.org">cairo@cairographics.org</a><br />> <br />> 2010/8/27 necko necko <<a href="mailto:opustenom@hotmail.com">opustenom@hotmail.com</a>>:<br />> > In order for my pdf file to look nicer, I changed the background to black,<br />> > and now<br />> > I need to emphasize a number of lines between certain coordinates. Some<br />> > lines need<br />> > to be shown as red, some as green, and some as blue, or a variation.<br />> > I tested the above requirement with the code below:<br />> >   cairo_set_line_width (cr, .5);<br />> >   cairo_set_source_rgb(cr, 1, 0, 0);<br />> >   cairo_move_to (cr, 152.84, -50.0);<br />> >   cairo_line_to (cr, 83.97, 30.93);<br />> >   cairo_stroke_preserve(cr);<br />> ><br />> >   cairo_set_source_rgb(cr, 0, 0, 1);<br />> >   cairo_move_to(cr, 90, 1);<br />> >   cairo_line_to(cr, 40, 1);<br />> >   cairo_stroke_preserve(cr);<br />> > ......................................<br />> > However, both lines are displayed as blue, with a very thin red line in the<br />> > middle of it.<br />> > Is there a way to specify that one line needs to be only blue, and the other<br />> > only red?<br />> > What would be the code to try?<br />> > I appreciate your help.<br />> <br />> You'll want to user cairo_stroke instead of cairo_stroke_preserve.<br />> Because in the code above the second path from the blue line gets<br />> added to the already exisiting path you used for the red line, thus<br />> rendering the two lines on top of eachother.<br />> <br />> Maarten<br /><br />Thank you, Maarten.<br />In addition, is there some other way to change the background of the pdf file, instead of<br />specifying the bounding rectangle  and then invoking fill()?<br /> <p>--<br />cairo mailing list<br /><a href="mailto:cairo@cairographics.org">cairo@cairographics.org</a><br /><a href="http://lists.cairographics.org/mailman/listinfo/cairo">http://lists.cairographics.org/mailman/listinfo/cairo</a></p></blockquote>