Re: pango text size

[Richard Boaz <riboaz xs4all nl>]

hi,

i have no idea if i do this correctly myself (comments?), but the way  
i have achieved this is with the following code:

int fontSIZE(char *str, gboolean type)
{
int width, height, ret;
PangoFontDescription *desc;
PangoLayout *layout = pango_layout_new (gtk_widget_get_pango_context 
(widget /* drawing area, e.g. */));

pango_layout_set_text(layout, str, -1);
pango_layout_set_font_description(layout, desc);
pango_layout_get_pixel_size (layout, &width, &height);

switch (type)
{
  case HEIGHT:
    ret = height;
    break;
  case WIDTH:
    ret = width;
    break;
}
g_object_unref (layout);
return(ret);
}

but i'm with you, it would seem to me there should be an easier way  
of getting these values, in that, requiring to know the width/height  
of a string strikes me as crucial information if you're rendering  
text to a drawing area where the location of other stuff in the  
drawing area is dependent on the size of other displayed text.

good luck, and if anyone else has any more interesting/correcter  
information on this subject, i would also be very interested.

cheers,

richard


On Mar 20, 2006, at 3:38 PM, Jose Hevia wrote:

> Hello,
> I need to know the size of chars(width,height) written in a text view,
> so I could calculate the number of "words" per line I could write.
> So I downloaded "gnome-terminal" source code to see if I could
> understand how can it do it, but I'm little confused.
> I just want to know  the width and heigth of a given monospace font
> cell, looking at the documentation I only found:
> pango_font_metrics_get_approximate_digit_width()
> [ http://developer.gnome.org/doc/API/2.0/pango/pango- 
> Fonts.html#id2931730 ]
> but I need the fontmetrics, I can get the metrics from a fontset, but
> how do I get the fontset?
> gdk functions that do it are deprecated.
> Seems too complicated for something so simple.
> Do you know a good pango tutorial/ebook that covers this?  Any simple
> program that already do this with viewable code?
>
>    Jose Hevia
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