[cairo] dimensionally accurate drawings on screen ?
ellson at research.att.com
Fri Jan 20 11:57:57 PST 2006
This isn't a cairo problem, I'm sure, but I'm hoping that someone here will
know how to solve it.
I'm trying to create dimensionally accurate drawings using cairo on a
drawable = gtk_drawing_area_new();
cr = gdk_cairo_create (drawable);
I can generate the drawings ok. Its the dimensionally accurate part I'm having difficultly with.
I'd like to scale according to accurate xy resolution values. With Xlib I know I can obtain the
resolution.x = DisplayWidth(dpy, scr) / DisplayWidthMM(dpy, scr);
resolution.y = DisplayHeight(dpy, scr) / DisplayHeightMM(dpy, scr);
but how can I get from "GdkDrawable *display" to the "Display* dpy" and the "int scr" ?
Thanks in advance for any hints.
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