Hello,
I am writing a graph widget for use in GTK+ applications. I'm trying to
calculate the minimum size for the widget from the text along the axes
of the graph. I use Cairo to draw the text, so I'm using the
cairo_text_extents functions to calculate their sizes.
However, I'm running into a problem where widget->style->font_desc does
not seem to be returning a valid Pango font description. When I call
pango_font_description_get_size on the font_desc, it returns 10 *
PANGO_SCALE, which seems to be a default value when the style isn't
initialized. This causes my function to assume the incorrect font size
when calculating its size request. I tried calling
gtk_widget_ensure_style on my widget before accessing the font_desc
element, but that does not help.
Here's a code snippet:
static void gtk_graph_size_request(GtkWidget *widget,
GtkRequisition *requisition)
{
gdouble bfont_sz;
/* ... */
gtk_widget_ensure_style(widget);
bfont_sz = pango_font_description_get_size(
widget->style->font_desc) /
(gdouble)PANGO_SCALE;
/* bfont_sz here is 10, for my theme, it should be 13.3 */
/* ... */
}
I'm running GTK+ 2.14.7, (2.14.7-4+b1 as shipped by Debian sid), GLib
2.20.0 (2.20.0-2), ATK 1.24.0 (1.24.0-2), Pango 1.22.4 (1.22.4-3), and
Cairo 1.8.6 (1.8.6-2+b1).
Let me know if you need any more information. Thanks in advance for
your help!
Thanks,
David Brigada
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