On Mon, 8 Nov 1999, Marc Lehmann wrote: > I must have misunderstood your problem: why do you want to know the ascent or > the descent of a given string? > I've only been following this thread on-and-off so please forgive any ignorance :-) One problem with the current system that I encountered was as follows :- I wanted to write a script-fu to generate a logo with each letter of the string in a different color. (See http://www.flamingtext.com/net-fu/forms/colored-logo.html) To do this each character in the string of course has to be rendered individually. But if you just render them one after the other, increasing the x-offset by the width of the rendered character each time, then the baselines are all over the place. I worked around this problem by rendering (string-append char " " str), where <char> is the current character and <str> is the full string and <" "> is a bunch of spaces so that kerning doesn't leave dags behind. After redering that string I use gimp-text-get-extents to get the width of <char> and increase x-offset by that amount. > > - letting the gimp_text_get_extents return two additional fields, > > namely ($has_ascent,$has_descent). > > > > I favour the last ;) > > But that wouldn't help you... wether a given character/string has an > ascent doesn't tell you how much it is (which is what you want to know?) > Yep, you're right, that info tells you didly! But if it returned the baseline of the rendered text (as a offset from the top or bottom of the text area) then that could be used to translate the text area if required. -Dave -------------------------------------------------------------- http://www.flamingtext.com/
