From: joakim@verona.se
To: emacs-devel@gnu.org
Subject: How to make a new pseudovector type?
Date: Fri, 15 Jul 2011 12:31:07 +0200 [thread overview]
Message-ID: <m362n36djo.fsf@verona.se> (raw)
In the xwidget branch I use PVEC_OTHER = 0x400000 from enum pvec_type
to represent an xwidget. It works, except the print loop doesnt like to
print PVEC_OTHER(at least I think thats what happening)
So, anyway. pvec_type has 14 entires which are all occupied.
PVEC_TYPE_MASK = 0x7ffe00. 1 bit per type. Should I expand this for a
new type? Do I need a new type or is PVEC_OHER enough but I have missed
something? Is pseudovectors the thing I should actually use if I want
lisp to allocate a structure with mixed c and lisp?
I need 2 new types currently, struct xwidget for the model and struct
xwidget_view for the views. BTW I find it remarkable that 14 types are
sufficient. So theres something I maybe dont understand here.
For reference here is the declaration I use:
struct xwidget{
struct vectorlike_header header;
Lisp_Object plist;//auxilliary data
Lisp_Object type;//the widget type
Lisp_Object buffer; //buffer where xwidget lives
Lisp_Object title;//a title that is used for button labels for instance
//here ends the lisp part.
//"height" is the marker field
int height;
int width;
//for offscreen widgets, unused if not osr
GtkWidget* widget_osr;
GtkContainer* widgetwindow_osr;
};
Heres the other one:
//struct for each xwidget view
struct xwidget_view{
struct vectorlike_header header;
struct xwidget* model;
//here ends the lisp part.
//"redisplayed" is the marker field
int redisplayed; //if touched by redisplay
struct window *w; //TODO should be lisp
int hidden;//if the "live" instance isnt drawn
int initialized;
GtkWidget* widget;
GtkContainer* widgetwindow;
GtkContainer* emacswindow;
int x; int y;
int clip_right; int clip_bottom; int clip_top; int clip_left;
long handler_id;
};
--
Joakim Verona
next reply other threads:[~2011-07-15 10:31 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-15 10:31 joakim [this message]
2011-07-18 13:46 ` How to make a new pseudovector type? Stefan Monnier
2011-07-18 13:55 ` joakim
2011-07-18 14:19 ` Stefan Monnier
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